CN111057176B - Tracer agent suitable for complex geological environment energy development and interpretation method thereof - Google Patents
Tracer agent suitable for complex geological environment energy development and interpretation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of energy development and tracing, and particularly relates to a tracer suitable for energy development of complex geological environment. The tracer agent forms different types of systems, has obvious difference of different detection characteristics, can adapt to different use environments, can be used independently or in combination, has temperature resistance and salt tolerance, forms different types of tracer systems, can be used independently for tracing detection explanation and can be flexibly combined for tracing detection explanation.
Description
Technical Field
The invention belongs to the technical field of energy development and tracing, and particularly relates to a tracer agent suitable for energy development of a complex geological environment and a method thereof.
Background
The existing oil gas energy development tracing technology adopts complex tracing measures, tracing materials are complex, tracing modes are repeated, tracing wastes time and labor, energy consumption and environmental pollution are increased, and energy development efficiency is low. The existing tracer agent is lack of temperature resistance and salt tolerance, and perhaps has temperature resistance, but can not meet the requirements of being adapted to complex formation environment and simultaneously has good detection monitoring so as to facilitate tracing or tracing interpretation, and in addition, the existing tracer agent also lacks of forming different tracing systems, different types in the system can not be used independently, can not be used in combination, and can not detect tracing in different environments, so that combination or flexible combination of different types of tracer agents can not be realized, or mutual interpretation of tracing conditions according to changes of different combined use can not be realized after combination, and easy, convenient and rapid detection and monitoring can not be realized under the condition of being adapted to complex formation environment. Therefore, in the aspect of energy development tracing technology, the investment is large, the energy consumption pollution is high, and the energy development tracing efficiency is low. Therefore, it is urgently needed to develop a tracer which overcomes the defects in the prior art.
Disclosure of Invention
In order to solve one of the problems, the invention provides a tracer agent suitable for energy development of complex geological environment, which comprises sodium styrene sulfonate, limonene, sodium acrylate and dibenzoyl peroxide, wherein the tracer agent A is obtained by polymerization reaction of the sodium styrene sulfonate, the limonene, the sodium acrylate and the dibenzoyl peroxide.
Preferably, said tracer further comprises a tracer monitoring interpretation using said tracer a in combination with reactants comprising sinapine and phthalic anhydride.
Preferably, the reaction of sinapine with phthalic anhydride comprises performing a polyester reaction to produce a material comprising the following structural formula (I):
preferably, the coordination tracing monitoring explanation comprises weighing 2 parts of tracer A according to the mass part ratio, weighing 1 part of substance containing the structural formula (I) as a composite tracer B according to the mass part ratio, testing the characteristic peak absorbance condition of the composite tracer B in solvents comprising crude oil or water by using an ultraviolet-visible spectrophotometer at different wavelengths, or testing the characteristic peak absorbance condition of the composite tracer B in solvents comprising crude oil or water by using an ultraviolet-visible spectrophotometer at 648 nm.
Preferably, the polymerization reaction is carried out in a solvent, the solvent comprises a mixture of ethanol and water, and the solvent, sodium styrene sulfonate, limonene, sodium acrylate and dibenzoyl peroxide are mixed according to the mass fraction ratio in the reaction, wherein the reaction quantity is 30: 10:3: 2:0.5.
The invention also provides a manufacturing method of the tracer A, which comprises the following steps: heating and dissolving the 2 parts of lemon juice in 10 parts of ethanol at 30-50 ℃, filling nitrogen and heating for 5-20 minutes to form a solution, and adding 0.01 part of azo reaction to perform a second step: weighing 20 parts of water, adding 10 parts of sodium styrene sulfonate and 3 parts of sodium acrylate, stirring, filling nitrogen, heating to 60-90 ℃, keeping for 30-60 minutes, adding 0.2 part of dibenzoyl peroxide, and reacting for 5-30 minutes to form reaction liquid; the third step: adding the dissolved solution in the first step into the reaction solution in the second step, keeping the temperature at 60-80 ℃, continuously flushing nitrogen, adding 0.3 part of dibenzoyl peroxide, then adding 0.5 part of sodium metabisulfite, stirring for reacting for 1-3 hours, and evaporating the solvent to obtain the tracer A.
Preferably, the method for preparing the substance with the structural formula (I) in the tracer is characterized by comprising the steps of weighing sinapine and phthalic anhydride in a molar ratio of 3 to 1, adding the sinapine and the phthalic anhydride into a high-temperature reaction kettle, arranging a titanium dioxide particle filler and an aluminum oxide particle filler in the reaction kettle, wherein the filler accounts for half of the volume of the reaction kettle, adding 1 MPa nitrogen pressure, heating to 180 ℃ and 190 ℃, stirring for reaction for 3-6 hours, cooling to 40-20 ℃ in a nitrogen environment, taking out reaction liquid and the particle filler in the reaction kettle, filtering, collecting filtrate, washing the filler with n-butyl alcohol serving as a solvent, and evaporating the solvent to obtain the substance with the structural formula (I).
The invention also provides a method for trace monitoring interpretation of said tracer: the method comprises the following steps of firstly, weighing 2 parts of tracer A according to the mass part ratio, and weighing 1 part of substance containing a structural formula (I) to prepare a composite tracer B;
the second step is that: selecting an injection well and a monitoring well, calculating the adding amount of a composite tracer B according to design parameters or a formula or a minimum detection limit, calculating the corresponding adding amount of the tracer A and the corresponding adding amount of a substance containing a structural formula (I) according to the obtained adding amount of the composite tracer B in a mass part ratio of 2 to 1, dissolving the tracer A in a small amount of water according to the corresponding adding amount, adding the substance containing the structural formula (I) into the injection well, and preferably crushing the substance containing the structural formula (I) into 60-80-mesh powder according to the adding amount of the substance containing the structural formula (I), dispersing the powder into water and adding the powder into the injection well; and thirdly, monitoring a water sample and an oil sample taken from a monitoring well, firstly, testing the absorbance of a characteristic peak of the water sample of the monitoring well at 648nm by using an ultraviolet visible spectrophotometer, if the absorbance of the characteristic peak is tested at 648nm, at least deducing that an injection well is communicated with the monitoring well, and the channel between the monitoring well and the injection well has little or no oil content, if the absorbance of the characteristic peak is not tested at 648nm, testing the absorbance of the characteristic peak at 568nm by using the ultraviolet visible spectrophotometer in the extracted oil sample, and if the absorbance of the characteristic peak is not tested at 568nm, presuming that the monitoring well is at least communicated with the injection well and the communication channel has oil content.
The other tracing monitoring explanation method of the tracer comprises the first step of weighing 2 parts of the tracer A according to the mass part ratio, weighing 1 part of the substance containing the structural formula (I) to prepare the compound tracer B, selecting an injection well, a monitoring well and a production well, calculating the addition of the compound tracer B according to design parameters or a formula or a minimum detection limit, calculating the corresponding addition of the tracer A and the corresponding addition of the substance containing the structural formula (I) according to the mass part ratio of 2 to 1 according to the obtained addition of the compound tracer B, dissolving the tracer A in a small amount of water according to the corresponding addition and adding the substance containing the structural formula (I) into the injection well, dispersing the substance containing the structural formula (I) in the water according to the addition of the substance containing the structural formula (I) and adding the substance containing the structural formula (I) into the production well; and thirdly, monitoring the water sample and the oil sample taken from the monitoring well, firstly, testing the absorbance of the characteristic peak of the water sample of the monitoring well at 648nm by using an ultraviolet visible spectrophotometer, if the absorbance of the characteristic peak is tested at 648nm, at least concluding that the injection well is communicated with the monitoring well, the oil extraction well is not communicated with the injection well and the monitoring well, concluding that the oil content on a channel between the monitoring well and the injection well is low or no oil, if the absorbance of the characteristic peak is not tested at 648nm, or testing the absorbance of the characteristic peak at 568nm by using the ultraviolet visible spectrophotometer in the produced oil sample, and concluding that a communication channel exists between the oil extraction well and the injection well of the monitoring well if the absorbance of the characteristic peak is not tested at 568 nm.
The invention also provides a method for testing the temperature resistance and salt tolerance of the tracer, which comprises the process of testing the absorbance of the characteristic peak by using an ultraviolet-visible spectrophotometer in a solution with certain mineralization degree and temperature.
The invention has the beneficial effects that: the invention provides a tracer agent suitable for energy development of complex geological environment, which has temperature resistance and salt tolerance, wherein the tracer agent forms different types of systems, the detection characteristics of different types of systems are obviously different, the tracer agent can adapt to different use environments, the different types of systems can be used independently or in combination, and the temperature resistance and salt tolerance are realized, meanwhile, the tracer agent forms different types of tracer systems, different tracer agents can be used for single tracer detection explanation or can be flexibly combined for tracer detection explanation, the tracer agent and the tracer agent have the characteristics of monitoring detection explanation when used in different environments in water or oil, the invention also has the following further beneficial effects in conclusion, when the tracer agent is used in combination, the characteristics are not superposed or the characteristics do not appear to realize mutual explanation of tracing, when the salt-resistant and salt-resistant tracer agent provided by the invention is easy to detect and monitor under the condition of adapting to complex stratum environment, the invention also provides a preparation method, a detection method, a use method and an explanation method corresponding to the system, and the methods are used in cooperation to provide relatively reliable and accurate accuracy for tracing monitoring and explanation. The invention reduces complex tracing measures in the oil gas energy development tracing technology, reduces energy consumption and environmental pollution, and has great significance and advanced function in providing energy development efficiency.
Drawings
FIG. 1: is an infrared spectrogram of a tracer A of the invention;
FIG. 2: the tracer A of the invention has an ultraviolet-visible absorption spectrum;
FIG. 3: is the ultraviolet visible absorption spectrum of the substance with the structural formula (I) of the invention;
FIG. 4: the ultraviolet-visible absorption spectrum of the composite tracer B of the invention;
FIG. 5: is an infrared spectrogram of a substance with a structural formula (I) of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A tracer agent suitable for energy development of complex geological environment: comprises that styrene sodium sulfonate, lemon dilute, sodium acrylate and dibenzoyl peroxide are polymerized to obtain tracer A.
Preferably, the polymerization reaction is carried out in a solvent, the solvent comprises a mixture of ethanol and water, and the solvent, sodium styrene sulfonate, limonene, sodium acrylate and dibenzoyl peroxide are mixed according to the mass fraction ratio in the reaction, wherein the reaction quantity is 30: 10:3: 2:0.5.
The following describes the production method of the tracer A of the present invention: the first step is as follows: heating and dissolving the 2 parts of lemon juice in 10 parts of ethanol at 30-50 ℃, filling nitrogen and heating for 5-20 minutes to form a solution, and adding 0.01 part of azo (preferably azodiisobutyronitrile) for reaction; the second step is that: weighing 20 parts of water, adding 10 parts of sodium styrene sulfonate and 3 parts of sodium acrylate, stirring, filling nitrogen, heating to 60-90 ℃, keeping for 30-60 minutes, adding 0.2 part of dibenzoyl peroxide, and reacting for 5-30 minutes to form reaction liquid; the third step: adding the dissolved solution in the first step into the reaction solution in the second step, keeping the temperature at 60-80 ℃, continuously flushing nitrogen, adding 0.3 part of dibenzoyl peroxide, then adding 0.5 part of sodium metabisulfite, stirring for reacting for 1-3 hours, and evaporating the solvent to obtain the tracer A.
The tracer A prepared and synthesized by the method of the invention is confirmed by structural analysis, as shown in figure 1, an infrared spectrogram of the tracer A is shown, as can be seen from figure 1, a broad peak from 1160cm-1 to 1260cm-1 formed by the preparation and synthesis of the tracer A is a stretching vibration peak of acrylic carboxyl in a polymer, a peak at 1183 cm-1 is an asymmetric stretching vibration peak of S-O in a sulfonic acid group, a peak near 835 cm-1 is a fingerprint area of a benzene ring in sodium styrene sulfonate, and a peak at 1551 and 1645cm-1 is a characteristic absorption of limonene, so that the tracer of the component of the invention is synthesized by the method of the invention, and in addition, strong peaks are not seen at 990-985 cm-1 and near 910-905 cm-1, which indicates that the polymerization and reaction are basically finished. And the relative molecular weight of the synthetic tracer a was determined to be 930 using the ukraine viscometer to perform a standard method for measuring viscosity.
The ultraviolet characteristic absorption of the tracer A is explained below, the absorbance of a characteristic peak is tested at 648nm by using a 752 model ultraviolet visible spectrophotometer (which is equivalent to the characteristic absorption of the tracer A, the percentage content of the tracer A is calculated by using the 752 model spectrophotometer and software), the percentage content of a characteristic peak substance is calculated by using 752 model software, and the specific calculation principle comprises the percentage of the total area of an area absorbance curve of a characteristic peak curve part.
The invention also provides a method for testing the temperature resistance and salt tolerance of the tracer A, which is characterized by comprising the process of testing the absorbance of a characteristic peak by using an ultraviolet-visible spectrophotometer in a solution with certain mineralization degree and temperature. The method can be repeatedly adopted in the implementation process of the invention.
The preferable test method for the temperature resistance and the salt resistance comprises the test method for the temperature resistance and the salt resistance of the tracer A, which comprises the step of testing the absorbance process of a characteristic peak by using an ultraviolet-visible spectrophotometer in water with certain mineralization degree and temperature; the method specifically comprises the steps of dissolving two identical samples I and II in formation water and tap water with the mineralization degree of about 10% to form a concentration of 0.05mg%, heating to 90 ℃ and keeping at room temperature for 3 days, testing absorbance by using a 752-type ultraviolet-visible spectrophotometer, as shown in an ultraviolet-visible absorption spectrum of figure 2, testing the absorbance of a characteristic peak at 648nm, which is equivalent to the characteristic absorption of the tracer A, and then calculating the percentage content of the tracer A by using the 752-type spectrophotometer (the specific calculation principle comprises the percentage of the total area of an area absorbance curve at the curve part of the characteristic peak). As shown in Table 1 below
TABLE 1
| Sample 1 (10% formation water, 3 days) | Sample 1 (tap water, 3 days) | |
| Percent content of contrast agent A at 90 DEG C | 0.046 | 0.049 |
| Percent content of contrast agent A at 25 DEG C | 0.047 | 0.05 |
As can be seen from the above table 1, the percentage content of the tracer A in the invention is basically unchanged in the tests of ultraviolet absorbance under the conditions of high temperature and high salinity and the conditions of tap water and room temperature, which shows that the tracer A has the capability of temperature resistance and mineralization resistance, has better detection identification degree under specific ultraviolet wavelength, and can be used for tracing detection suitable for complex geological conditions. The tracer detection monitoring method for the specific tracer A comprises the steps of selecting the tracer A with a certain concentration to be injected into a produced oil-gas well, judging whether the produced oil-gas well is communicated with a monitoring well or not and obtaining other related stratum parameters according to the information of the tracer A and the information of the concentration of the tracer A in the produced liquid of the monitoring well, and realizing the use of the independent tracer detection monitoring explanation of the tracer A.
Preferably, said tracer further comprises a tracer monitoring interpretation performed with said tracer a complexed with a reactant comprising sinapine and phthalic anhydride. The reaction of sinapine with phthalic anhydride comprises performing a polyester reaction to produce a material comprising the following structural formula (I):
the characteristic absorption process of the structural formula (I) is that 0.005mg of the substance comprising the structural formula (I) is dissolved in 10ml of tetrahydrofuran or dimethyl sulfoxide or crude oil, and an 752-type ultraviolet-visible spectrophotometer is used for making an absorption spectrum, as shown in figure 1, because the substance comprising the structural formula (I) has multi-benzene ring connection, as shown in figure 3, the maximum ultraviolet absorption characteristic wavelength of the benzene ring ester is 568 nm. The ultraviolet visible absorption spectrum 568 of the substance with the structural formula (I) shows characteristic peaks, 2 parts of tracer A is dissolved in water to form solution, 1 part of substance with the structural formula (I) is dissolved in crude oil to form solution, the viscosity of the crude oil is not more than 5mpa.s, the concentration of the two solutions is not less than 5ppm, the two solutions are mixed, as the overall structure of the tracer A, including acid and sinapine in the substance with the structural formula (I), generates a single-photon effect in the environment including crude oil to influence the charge structure and further influence the vibration of each characteristic group so as to weaken or disappear the characteristic absorption, thus, no characteristic peak absorbance was measured at 568nm or 648nm using a UV-visible spectrophotometer (see FIG. 4). Therefore, the cooperation tracing monitoring explanation comprises the steps of weighing 2 parts of the tracer A according to the mass part ratio, weighing 1 part of the substance containing the structural formula (I) according to the mass part ratio to prepare the composite tracer B, wherein the composite tracer B has no characteristic peak absorbance at 568nm by using an ultraviolet-visible spectrophotometer in a solvent comprising crude oil or water, or the composite tracer B has no characteristic peak absorbance at 648nm by using an ultraviolet-visible spectrophotometer in a solvent comprising crude oil or water, so that the composite tracer B can be checked and confirmed.
The method for preparing the substance with the structural formula (I) is illustrated as follows, the reaction of sinapine and phthalic anhydride is that sinapine and phthalic anhydride are weighed according to the molar part ratio of 3 to 1 and are added into an HT-FJ series micro high-temperature reaction kettle, the reaction kettle is provided with titanium dioxide particles and particle fillers of aluminum oxide, the amount of the particle fillers (the particle size of which is not less than 40 meshes) accounts for half of the volume of the reaction kettle, then 1 MPa nitrogen pressure is added, the mixture is heated to 180 ℃ and stirred for reaction for 3 to 6 hours, the temperature is reduced to 40 to 20 ℃ in a nitrogen environment, reaction liquid and the particle fillers in the reaction kettle are taken out for filtration and filtrate is collected, the solvent is evaporated after the fillers are washed by n-butyl alcohol, and the substance with the structural formula (I.
The confirmation and examination of the structure of the substance of formula (I) comprises dissolving 0.005mg of the substance of formula (I) in 10ml of tetrahydrofuran or dimethyl sulfoxide, and using an absorption spectrum of a model 752 ultraviolet-visible spectrophotometer to show that the maximum absorption characteristic wavelength of phenyl cyclic ester is 568nm as shown in figure 3 because the substance of formula (I) has a multi-benzene ring connection. The substance of the formula (I) shows a characteristic peak in the vicinity of 568 of the ultraviolet-visible absorption spectrum, and hence it is known that the formula (I) is produced.
Further testing the structure by FTIR, and testing substances with potassium bromide as background by an FTIR-650 infrared spectrometer to obtain an infrared spectrogram, wherein as shown in figure 5, the vibration absorption peak of carboxyl connected with a single benzene ring at 1750cm-l is obviously weakened, and the vibration absorption peak is increased towards low frequency, which shows that the generation and the number of carboxyl connected with a plurality of benzene rings are increased, the C-H stretching vibration peak of benzene at 3031cm-l and the vibration frequency range of 3052-3086 cm - l The broadband absorption of the stretching vibration between the benzene rings indicates that the connection of the benzene rings exists.
The following description includes a temperature-resistant and mineralization-resistant test method for substances of a structural formula (I), which comprises a process of testing the absorbance of a characteristic peak in water with certain mineralization and temperature by using an ultraviolet-visible spectrophotometer; the specific test comprises the steps of placing 5g of a first sample and a second sample of the structural formula (I) in two parts of same weight in formation water and tap water with the mineralization degree of about 10% and testing by an ultraviolet-visible spectrophotometer, wherein the water amount is 1000g, the first sample and the second sample are heated to 90 ℃ and kept at room temperature for 3 days, then the first sample and the second sample are taken out and respectively dissolved in tetrahydrofuran or dimethyl sulfoxide or crude oil with the viscosity of less than 5mpa, then an 752-type ultraviolet-visible spectrophotometer is used for testing the absorbance of a characteristic peak at 568nm, the absorbance is equivalent to the characteristic absorption of the substance of the structural formula (I), and then the percentage content of the tracer A is calculated by utilizing 752-type luminosity. As shown in Table 2 below
TABLE 2
| Sample I (10% stratum water, 3 days) | Sample No. two (tap water, 3 days) | |
| Percent content of contrast agent A at 90 DEG C | 0.58 | 0.6 |
| Content percentage of contrast agent A at 25 DEG C | 0.59 | 0.59 |
The percentage content of the substance with the structural formula (I) is basically unchanged in tests of ultraviolet absorbance under the conditions of high temperature and high salinity and the conditions of tap water and room temperature, which shows that the tracer has the capability of temperature resistance and mineralization resistance, has better detection identification degree under specific ultraviolet wavelength, and can be used for oil-soluble tracing detection applicable to complex geological conditions to obtain stratum channels, permeability and other related stratum parameters by tracing.
According to the tracer A disclosed by the invention, the characteristic of a substance containing a structural formula (I) in a mixed solvent and the ultraviolet characteristic absorption condition of the substance containing the structural formula (I) are weighed, and the method comprises the following steps of weighing 2 parts of the tracer A according to the mass part ratio, and weighing 1 part of the substance containing the structural formula (I) to prepare a composite tracer B;
the second step is that: selecting an injection well and a monitoring well, calculating the adding amount of the composite tracer B according to a design parameter or a formula or a minimum detection limit, preferably the adding amount of the composite tracer B comprises calculating the adding amount of the tracer according to a design embodiment and a calculation formula of the adding amount of the tracer or according to the farthest well distance of a well group, the thickness of a reservoir, the water content, the porosity and the minimum detection limit of an instrument, preferably the adding amount of the tracer is not lower than 5ppm according to the percentage content of the adding amount of the composite tracer B, calculating the corresponding adding amount of the tracer A and the corresponding adding amount containing the substance with the structural formula (I) according to the adding amount of the composite tracer B with the mass part ratio of 2 to 1, dissolving the tracer A into a small amount of water according to the corresponding adding amount (the small amount of water is controlled within the concentration range of the calculated adding amount of the tracer), adding into the injection well, and adding the substance with the structural formula (I) according to the adding amount containing the substance with the structural formula (I), preferably, the material containing the structural formula (I) is crushed into powder of 60-80 meshes, dispersed in water and added into an injection well; and thirdly, monitoring a water sample and an oil sample taken from a monitoring well, firstly, testing the absorbance of a characteristic peak of the water sample of the monitoring well at 648nm by using an ultraviolet visible spectrophotometer, if the absorbance of the characteristic peak is tested at 648nm, at least obtaining that an injection well is communicated with the monitoring well, and the channel between the monitoring well and the injection well has little or no oil content, if the absorbance of the characteristic peak is not tested at 648nm, testing the absorbance of the characteristic peak at 568nm by using the ultraviolet visible spectrophotometer in the extracted oil sample, and if the absorbance of the characteristic peak is not tested at 568nm, presuming that the monitoring well is at least communicated with the injection well and the communication channel has oil content.
The corresponding other tracer monitoring and explaining method of the tracer comprises the first step, weighing 2 parts of the tracer A according to the mass part ratio, weighing 1 part of the substance containing the structural formula (I) to serve as the composite tracer B, selecting an injection well, a monitoring well and a production well, calculating the adding amount of the composite tracer B according to design parameters or a formula or a minimum detection limit, calculating the corresponding adding amount of the tracer A and the corresponding adding amount of the substance containing the structural formula (I) according to the obtained adding amount of the composite tracer B according to the mass part ratio of 2 to 1, dissolving the tracer A into a small amount of water (the small amount of water is controlled within the concentration range of the calculated adding amount of the tracer) according to the corresponding adding amount, adding the substance containing the structural formula (I) into the injection well according to the adding amount of the substance containing the structural formula (I), preferably crushing the substance containing the structural formula (I) into powder of 60-80 meshes, dispersing in water and adding into oil production well; and thirdly, monitoring the water sample and the oil sample taken from the monitoring well, firstly, testing the absorbance of the characteristic peak of the water sample of the monitoring well at 648nm by using an ultraviolet visible spectrophotometer, if the absorbance of the characteristic peak is tested at 648nm, at least concluding that the injection well is communicated with the monitoring well, the oil extraction well is not communicated with the injection well and the monitoring well, concluding that the oil content on a channel between the monitoring well and the injection well is low or no oil, if the absorbance of the characteristic peak is not tested at 648nm, or testing the absorbance of the characteristic peak at 568nm by using the ultraviolet visible spectrophotometer in the produced oil sample, and concluding that a communication channel exists between the oil extraction well and the injection well of the monitoring well if the absorbance of the characteristic peak is not tested at 568 nm.
According to the method for monitoring and explaining, the tracer A is used in combination with the substance comprising the structural formula (I) and can be used in combination according to the situation of the two substances in a mixed solvent, so that the situation of the stratum can be inferred or the self-explanation of the situation of the stratum can be realized.
The invention has the advantages that the invention provides the tracer agent suitable for energy development of complex geological environment, has temperature resistance and salt tolerance, simultaneously, the tracer agent A and the substance containing the structural formula (I) can form different tracing systems on the basis of temperature resistance and salt tolerance, the tracer agent A and the substance containing the structural formula (I) can be singly traced, detected, used and explained, and also can be flexibly combined for tracing, detecting, using and explaining, the tracer agent A and the substance containing the structural formula (I) respectively have the characteristics of monitoring, detecting and explaining when being used in various environments in water or oil, the invention also has the following further beneficial effects that when the tracer agent A and the ultraviolet tracer agent containing the substance containing the structural formula (I) are combined, the characteristics are not superposed or the respective characteristics do not appear the mutual explanation of tracing, when the salt-resistant and temperature-resistant tracer agent provided by the invention is easy to detect and monitor under the condition of adapting to the complex stratum environment, the invention also provides a preparation method, a detection method, a use method and an explanation method corresponding to the system, and the methods are used in cooperation to provide relatively reliable and accurate accuracy for tracing monitoring and explanation.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. A tracer agent suitable for energy development of complex geological environment is characterized in that: the tracer A is obtained by polymerization reaction of sodium styrene sulfonate, limonene, sodium acrylate and dibenzoyl peroxide.
2. The tracer of claim 1, wherein: comprises using said tracer A in combination with reactants comprising sinapine and phthalic anhydride for tracer-monitoring interpretation.
3. The tracer of claim 2, wherein: the reaction of sinapine with phthalic anhydride comprises performing a polyester reaction to produce a material comprising the following structural formula (I)
4. The tracer of claim 3, wherein: the cooperation is carried out tracer monitoring and is explained and is weighed 2 parts tracer A according to the part by mass ratio, weighs according to the part by mass ratio contain 1 part of compound tracer B of constitutional formula (I) material preparation, test the department with the ultraviolet visible spectrophotometer at different wavelengths compound tracer B in the solvent including crude oil or water characteristic peak absorbance condition, perhaps compound tracer B does not have the absorbance of characteristic peak at 648nm department with the ultraviolet visible spectrophotometer in the solvent including crude oil or water.
5. The tracer of claim 1, wherein: the polymerization reaction is carried out in a solvent, the solvent comprises a mixture of ethanol and water, and the solvent, sodium styrene sulfonate, limonene, sodium acrylate and dibenzoyl peroxide are mixed according to the mass fraction ratio, wherein the reaction quantity is 30: 10:2: 3:0.5.
6. A method of producing a tracer according to claim 5, wherein: the first step is as follows: heating and dissolving 2 parts of limonene in 10 parts of ethanol at the temperature of 30-50 ℃, filling nitrogen and heating for 5-20 minutes to form a dissolved solution, and adding 0.01 part of azo for reaction: weighing 20 parts of water, adding 10 parts of sodium styrene sulfonate and 3 parts of sodium acrylate, stirring, filling nitrogen, heating to 60-90 ℃, keeping for 30-60 minutes, adding 0.2 part of dibenzoyl peroxide, and reacting for 5-30 minutes to form reaction liquid; the third step: adding the dissolved solution in the first step into the reaction solution in the second step, keeping the temperature at 60-80 ℃, continuously flushing nitrogen, adding 0.3 part of dibenzoyl peroxide, then adding 0.5 part of sodium metabisulfite, stirring for reacting for 1-3 hours, and evaporating the solvent to obtain the tracer A.
7. The method for preparing the substance with the structural formula (I) in the tracer according to claim 3, wherein the method comprises the steps of weighing sinapine and phthalic anhydride in a molar ratio of 3 to 1, adding the sinapine and the phthalic anhydride into a high-temperature reaction kettle, arranging a particle filler of titanium dioxide particles and aluminum oxide in the reaction kettle, wherein the amount of the filler accounts for half of the volume of the reaction kettle, adding 1 MPa of nitrogen pressure, heating to 180 ℃ and 190 ℃, stirring for reaction for 3-6 hours, cooling to 40-20 ℃ in a nitrogen environment, taking out reaction liquid and the particle filler in the reaction kettle, filtering, collecting filtrate, washing the filler with n-butyl alcohol, and evaporating the solvent to obtain the substance with the structural formula (I).
8. A method of trace monitoring interpretation by the tracer of claim 4, characterized by: the method comprises the following steps of firstly, weighing 2 parts of tracer A according to the mass part ratio, and weighing 1 part of substance containing a structural formula (I) to prepare a composite tracer B;
the second step is that: selecting an injection well and a monitoring well, calculating the adding amount of a composite tracer B according to design parameters or a formula or a minimum detection limit, calculating the corresponding adding amount of the tracer A and the corresponding adding amount of a substance containing a structural formula (I) according to the obtained adding amount of the composite tracer B in a mass part ratio of 2 to 1, dissolving the tracer A in a small amount of water according to the corresponding adding amount and adding the tracer A into the injection well, and dispersing the substance containing the structural formula (I) in the water according to the adding amount of the substance containing the structural formula (I) and adding the substance into the injection well; and thirdly, monitoring a water sample and an oil sample taken from a monitoring well, firstly, testing the absorbance of a characteristic peak of the water sample of the monitoring well at 648nm by using an ultraviolet visible spectrophotometer, if the absorbance of the characteristic peak is tested at 648nm, at least deducing that an injection well is communicated with the monitoring well, and the channel between the monitoring well and the injection well has little or no oil content, if the absorbance of the characteristic peak is not tested at 648nm, testing the absorbance of the characteristic peak at 568nm by using the ultraviolet visible spectrophotometer in the extracted oil sample, and if the absorbance of the characteristic peak is not tested at 568nm, presuming that the monitoring well is at least communicated with the injection well and the communication channel has oil content.
9. A method of alternative trace monitor interpretation of said tracer according to claim 4 wherein: weighing 2 parts of tracer A according to the mass part ratio, weighing 1 part of a substance containing a structural formula (I) to prepare a composite tracer B, selecting an injection well, a monitoring well and a production well, calculating the addition of the composite tracer B according to a design parameter or a formula or a minimum detection limit, calculating the corresponding addition of the tracer A and the corresponding addition of the substance containing the structural formula (I) according to the mass part ratio of 2 to 1 according to the obtained addition of the composite tracer B, dissolving the tracer A in a small amount of water according to the corresponding addition and adding the tracer A into the injection well, and dispersing the substance containing the structural formula (I) in the water according to the addition of the substance containing the structural formula (I) and adding the substance containing the structural formula (I) into the production well; and thirdly, monitoring a water sample and an oil sample taken from the monitoring well, firstly, testing the absorbance of a characteristic peak of the water sample of the monitoring well at 648nm by using an ultraviolet visible spectrophotometer, if the absorbance of the characteristic peak is tested at 648nm, at least concluding that an injection well is communicated with the monitoring well, a production well is not communicated with the injection well and the monitoring well, concluding that the oil content on a channel between the monitoring well and the injection well is low or no oil, if the absorbance of the characteristic peak is not tested at 648nm, or testing the absorbance of the characteristic peak at 568nm by using the ultraviolet visible spectrophotometer in the produced oil sample, and concluding that a communication channel exists between the production well and the injection well of the monitoring well if the absorbance of the characteristic peak is not tested at 568 nm.
10. A method for testing the temperature and salt resistance of a tracer according to any of claims 1 to 5, wherein: comprises the process of testing the absorbance of a characteristic peak in a solution with certain mineralization degree and temperature by using an ultraviolet-visible spectrophotometer.
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| CN101184987A (en) * | 2005-05-02 | 2008-05-21 | 纳尔科公司 | Method for using an all solid-state fluorometer in monitoring and controlling chemicals in water |
| CN103172788A (en) * | 2013-03-26 | 2013-06-26 | 段海宝 | Preparation method of dispersing agent |
| US20170121590A1 (en) * | 2015-11-04 | 2017-05-04 | Ecolab Usa Inc. | Friction-reducing compositions formulated with highly concentrated brine |
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| CN101184987A (en) * | 2005-05-02 | 2008-05-21 | 纳尔科公司 | Method for using an all solid-state fluorometer in monitoring and controlling chemicals in water |
| CN103172788A (en) * | 2013-03-26 | 2013-06-26 | 段海宝 | Preparation method of dispersing agent |
| US20170121590A1 (en) * | 2015-11-04 | 2017-05-04 | Ecolab Usa Inc. | Friction-reducing compositions formulated with highly concentrated brine |
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