CN102660246B - Precoated sand used for sand prevention for intermediate and low temperate oil deposit and preparation method thereof - Google Patents
Precoated sand used for sand prevention for intermediate and low temperate oil deposit and preparation method thereof Download PDFInfo
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- CN102660246B CN102660246B CN201210129925.7A CN201210129925A CN102660246B CN 102660246 B CN102660246 B CN 102660246B CN 201210129925 A CN201210129925 A CN 201210129925A CN 102660246 B CN102660246 B CN 102660246B
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Abstract
The invention relates to precoated sand used for sand prevention for intermediate and low temperate oil deposit and a preparation method thereof. The preparation method comprises the following steps of: 1)evenly mixing 40-50 parts of epoxy resin and 12-25 parts of solvent to prepare solution; 2) adding 2-4 parts of ketamine curing agent into the solution to be evenly mixed; 3) evenly mixing 1.6-2.2 parts of coupling agent and 1000 parts of quartz sand; 4) adding the solution into the quartz sand to be evenly mixed; and 5) dispersing pre-packaged sand, rolling to scatter the sand to be packaged after the sand to be packaged is thoroughly dried, and bagging to be packaged in a sealing mode. The precoated sand prepared with the preparation method disclosed by the invention has the advantages of small use amount of required sand consolidation agent and low medicament cost, and the volatile polyamine curing agent with pungent smell is modified into latent curing agent which is free from peculiar smell and is easy to store. The precoated sand has a simple preparation technology, can be used without being prepared, can be stored for a long time in the dry place, has the advantages of good temperature resistance, ageing resistance and corrosion resistance, high solidified sand core strength and good permeability.
Description
Technical field
The present invention relates to oilfield chemistry and use agent field, particularly relate to a kind of middle low-temperature reservoir sand control precoated sand and preparation method thereof.
Background technology
At present, along with Gudao oilfield exploitation gradually deeply, deeply taping the latent power in oil field and expands limit, due to the increasing gradually of mining intensity, the situation of shaking out is on the rise.
Anti-sand process technology is one of foundation works of oil-field development, the exploitation that can oil field maintain a long-term stability, and vital effect is being brought into play in the development of anti-sand process technology.
Chemical sand control is a kind of sand control technique that " Gu sand " be guiding theory of take, and from the essence on stratum, fundamentally controls shaking out of stratum.It is to utilize some chemical agents that the sand in stratum is cementing, prevent sand movement or form a kind of can only water or the hydro carbons filtration barrier with some strength and higher permeability that can pass through, reach and control the object of shaking out.
This anti-sand method mainly contains two types: the first is that sand-fixing agent is injected in the stratum shaking out, and by curing reaction, loose granular cementation is got up; The second is that precoated sand is filled in the stratum shaking out, and after solidifying, forms filter sand system in stratum.Because second method simply and is easily controlled compared with first method, each oil field mainly adopts the second anti-sand method.
Chemical classes sand-preventing process has the following advantages:
1. be suitable for fine silt sand control;
2. do not need cover to wash and the operation such as salvaging, post-processed is easy;
3. after construction in pit shaft noresidue instrument, be conducive to series of strata adjustment and multi-level well-completion practice;
4. construct simple and safe, success ratio is high, and resume permeability is high.
At present, the coated sand of China's field use, not easy to store, compare cost with mechanical sand control relatively high.Therefore, mining inetesity is high, and the chemical sand control agent that price is low is significant to the exploitation of understressed sand.
Summary of the invention
Problem to be solved by this invention is to provide a kind of middle low-temperature reservoir sand control precoated sand, and it can long-term storage, can use under water, and intensity is higher, and dosing is few, and cost is low, and scour resistance is good, and temperature tolerance is good.
Another object of the present invention is to provide the preparation method of precoated sand for the simple middle low-temperature reservoir sand control of a kind of preparation technology.
The present invention solves the problems of the technologies described above taked scheme to be: middle low-temperature reservoir sand control precoated sand, is characterized in that including following component and form through being mixed with, wherein
1000 parts of quartz sands; 1.6 ~ 2.2 parts of coupling agents; 40 ~ 50 parts of epoxy resin; 12 ~ 25 parts of solvents; 2 ~ 4 parts, ketoimine solidifying agent, is more than weight part meter.
Press such scheme, the preparation method of described ketoimine solidifying agent is: by polyamine and ketone, according to mol ratio, be 1:1.2 ~ 2 reacting by heating, dehydrating condensation, except the water producing in dereaction.
Press such scheme, described ketone is methylethylketone, methyl isopropyl Ketone or methyl iso-butyl ketone (MIBK).
Press such scheme, described polyamine is diethylenetriamine, mphenylenediamine, m-xylene diamine, 1,3-bis-(aminomethyl) hexanaphthene, quadrol or hexanediamine.
Press such scheme, described epoxy resin is the mixing that double A type epoxy resin comprises any one or they in E-51, E-44, E-42, E-20.
Press such scheme, described coupling agent is the mixing that silane coupling agent comprises any one or they in KH-550, KH-560, KH-570, KH-792, DL-602 and DL-171.
Press such scheme, described solvent is the mixing of any one or they in ethanol, acetone.
Press such scheme, described quartz sand particle size is 0.4 ~ 1.0mm.
The technical scheme that in the present invention, preparation method adopts is: the preparation method of precoated sand for middle low-temperature reservoir sand control, includes following steps:
1) solvent of the epoxy resin of 40 ~ 50 parts and 12 ~ 25 parts is even, be mixed with solution;
2) 2 ~ 4 parts of ketoimine solidifying agent are joined described in step 1) and mix in solution, place standby;
3) quartz sand of the coupling agent of 1.6 ~ 2.2 parts and 1000 parts is mixed;
4) by step 2) in the quartz sand of solution after joining step 3) gained and processing in, mix, obtain wrapping up in advance sand;
5) the pre-parcel sand of being prepared by step 4) scatter, and hangs after sand finish-drying to be wrapped, is ground loose, and pack sealing is preserved.
Press such scheme, the preparation method of described ketoimine solidifying agent is: by polyamine and ketone, according to mol ratio, be 1:1.2 ~ 2 reacting by heating, dehydrating condensation, except the water producing in dereaction.
During use, the precoated sand in above-mentioned steps being filled into one end is equipped with plug and is marked with in the Glass tubing of tap water, under medium and low temperature (as 60 ℃), ketoimine hydrolysis discharges amine curing agent and epoxy resin generation crosslinking reaction forms 3 D stereo reticulated structure, solidifies and obtains fixed rock core after 2 days.
It is few that the present invention prepares the required sand-fixing agent consumption of precoated sand, reagent cost is low, the polyamine curing agent of volatile and irritant smell is modified as to free from extraneous odour, is easy to the latent curing agent that stores, preparation technology is simple for this precoated sand, without using after preparation, can long-term storage (can reach 3 months) at dry place, there is good heatproof, ageing-resistant and erosion resistance, fixed sand core intensity is high, good penetrability.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
1. the preparation of solidifying agent
The quadrol that is 1:2 by mol ratio and methyl isopropyl Ketone join water trap (reflux condensate device is housed) are housed, in the four-hole reaction flask of thermometer and whipping appts, in water trap, just fill it up with methyl isopropyl Ketone, stir and heat up, when temperature is risen to 85 ℃, reaction starts to reflux, and refluxes after for some time, continues to be warming up to 120 ℃ excessive methyl isopropyl Ketone is steamed and obtain product.Product is light yellow transparent liquid.
2. the preparation of precoated sand
45 parts of epoxy resin (E-51:E-20=1:3) and 20 parts of ethanol are mixed to wiring solution-forming;
Then 2 parts of above-mentioned solidifying agent that prepare are joined in above-mentioned solution, mix;
2 parts of KH-550 are joined in 1000 parts of quartz sands and stirred in agitator, then the solution of previous step preparation is joined in agitator and mixed with sand;
Above-mentioned pre-parcel sand is scattered in air seasoning place, hang, ground loose after sand finish-drying to be wrapped, pack sealing is preserved.
3. the preparation of fixed rock core
By precoated sand be filled into one end be equipped with plug with holes Glass tubing at 60 ℃ underwater curing after 2 days, obtain fixed rock core.
4. precoated sand competent rock heart Performance
Precoated sand was placed after 2 months, and its fixed rock core ultimate compression strength and folding strength are respectively 6.4 ~ 8.1MPa and 4.1 ~ 5.2MPa.The rate of permeation that records above-mentioned fixed rock core with permeameter is 6.32 ~ 8.52 μ m
2.Fixed rock core is put into 24 hours its ultimate compression strength of 280 ℃ of bakings of retort furnace and still have 3.8 ~ 4.4MPa.Place fixed rock core after 2 months at 60 ℃ after different media is soaked 15 days its resistance to medium as following table 1.
The experiment of table 1 media-resistant
| The saturated NaCI diesel oil of medium clear water local water 1%HCI 5%HCI 1%NaOH 5%NaOH |
| Ultimate compression strength (MPa) 7.5 6.9 7.3 6.7 6.8 8.1 6.4 7.7 before soaking |
| Ultimate compression strength (MPa) 7.8 7.7 7.1 6.1 5.9 2.4 7.2 8.2 after soaking |
Embodiment 2
1. the preparation of solidifying agent
The m-xylene diamine that is 1:1.4 by mol ratio and methyl isopropyl Ketone join water trap (reflux condensate device is housed) are housed, in the four-hole reaction flask of thermometer and whipping appts, in water trap, just fill it up with methyl isopropyl Ketone, stir and heat up, temperature is risen to 90 ℃, reaction starts to reflux, and refluxes after for some time, continues to be warming up to 120 ℃ excessive methyl isopropyl Ketone is steamed and obtain product.Product is yellow clarified liq.
2. the preparation of precoated sand
40 parts of epoxy resin E-20 and 15 parts of acetone are mixed to wiring solution-forming;
Then 4 parts of above-mentioned solidifying agent that prepare are joined in above-mentioned solution, mix;
1.6 parts of KH-560 are joined in 1000 parts of quartz sands and stirred in agitator, then the solution of previous step preparation is joined in agitator and mixed with sand;
Above-mentioned pre-parcel sand is scattered in air seasoning place, hang, ground loose after sand finish-drying to be wrapped, pack sealing is preserved;
3. the preparation of fixed rock core
By precoated sand be filled into one end be equipped with plug with holes Glass tubing at 60 ℃ underwater curing after 2 days, obtain fixed rock core.
4. precoated sand competent rock heart Performance
Precoated sand was placed after 2 months, and its fixed rock core ultimate compression strength and folding strength are respectively 7.2 ~ 9.3MPa and 4.5 ~ 6.1MPa.The rate of permeation that records above-mentioned fixed rock core with permeameter is 4.56 ~ 6.13 μ m
2.Fixed rock core is put into 2 days its ultimate compression strength of 280 ℃ of bakings of retort furnace and still have 4.3 ~ 5.1MPa.Place fixed rock core after 2 months at 60 ℃ after different media is soaked 15 days its resistance to medium as following table 2.
The experiment of table 2 media-resistant
| The saturated NaCI diesel oil of medium clear water local water 1%HCI 5%HCI 1%NaOH 5%NaOH |
| Ultimate compression strength (MPa) 7.2 8.7 7.4 8.7 8.2 7.6 9.1 9.3 before soaking |
| Ultimate compression strength (MPa) 7.5 9.6 7.0 7.2 7.5 3.2 10.6 9.6 after soaking |
Embodiment 3
1. the preparation of solidifying agent
The hexanediamine that is 1:2 by mol ratio and methyl iso-butyl ketone (MIBK) join water trap (reflux condensate device is housed) are housed, in the four-hole reaction flask of thermometer and whipping appts, in water trap, just fill it up with methyl isopropyl Ketone, stir and heat up, when temperature is risen to 85 ℃, reaction starts to reflux, and refluxes after for some time, continues to be warming up to 120 ℃ excessive methyl isopropyl Ketone is steamed and obtain product.Product is light yellow transparent liquid.
2. the preparation of precoated sand
By 50 parts of epoxy resin E-20 and 25 parts of mixed solvents, (be ethanol in mass ratio: acetone=1:1) mix wiring solution-forming;
Then 4 parts of above-mentioned solidifying agent that prepare are joined in above-mentioned solution, mix;
2.2 parts of mixing coupling agents (being KH-550:KH-560=1:1 in mass ratio) are joined in 1000 parts of quartz sands and stirred in agitator, then the solution of previous step preparation is joined in agitator and mixed with sand;
Above-mentioned pre-parcel sand is scattered in air seasoning place, hang, ground loose after sand finish-drying to be wrapped, pack sealing is preserved.
3. the preparation of fixed rock core
By precoated sand be filled into one end be equipped with plug with holes Glass tubing at 60 ℃ underwater curing after 2 days, obtain fixed rock core.
4. precoated sand competent rock heart Performance
Precoated sand was placed after 2 months, and its fixed rock core ultimate compression strength and folding strength are respectively 7.8 ~ 10.1MPa and 4.8 ~ 6.3MPa.The rate of permeation that records above-mentioned fixed rock core with permeameter is 4.16 ~ 5.72 μ m
2.Fixed rock core is put into 24 hours its ultimate compression strength of 280 ℃ of bakings of retort furnace and still have 4.8 ~ 5.7MPa.Place fixed rock core after 2 months at 60 ℃ after different media is soaked 15 days its resistance to medium as following table 3.
The experiment of table 3 media-resistant
| The saturated NaCI diesel oil of medium clear water local water 1%HCI 5%HCI 1%NaOH 5%NaOH |
| Ultimate compression strength (MPa) 7.8 8.2 9.1 8.9 9.4 10.1 8.8 9.6 before soaking |
| Ultimate compression strength (MPa) 8.0 9.1 8.4 7.1 8.6 5.3 9.7 9.9 after soaking |
Claims (4)
1. low-temperature reservoir sand control precoated sand in, is characterized in that being formed through being mixed with by following component, wherein
1000 parts of quartz sands, 1.6 ~ 2.2 parts of coupling agents, 40 ~ 50 parts of epoxy resin, 12 ~ 25 parts of solvents, 2 ~ 4 parts, ketoimine solidifying agent, more than be weight part meter, the preparation method of described ketoimine solidifying agent is: by polyamine and ketone, according to mol ratio, be 1:1.2 ~ 2 reacting by heating, dehydrating condensation, except the water producing in dereaction, described ketone is methylethylketone, methyl isopropyl Ketone or methyl iso-butyl ketone (MIBK), described polyamine is diethylenetriamine, mphenylenediamine, m-xylene diamine, 1, 3-bis-(aminomethyl) hexanaphthene, quadrol or hexanediamine, described epoxy resin is that bisphenol A type epoxy resin comprises E-51, E-44, E-42, any one in E-20 or their mixing, described solvent is ethanol, any one in acetone or their mixing.
2. by middle low-temperature reservoir sand control precoated sand claimed in claim 1, the coupling agent described in it is characterized in that is silane coupling agent, and it is selected from the mixing of any one or they in KH-550, KH-560, KH-570, KH-792, DL-602 and DL-171.
3. by middle low-temperature reservoir sand control precoated sand claimed in claim 1, it is characterized in that described quartz sand particle size is 0.4 ~ 1.0mm.
4. the preparation method of precoated sand for low-temperature reservoir sand control claimed in claim 1, includes following steps:
1) solvent of the epoxy resin of 40 ~ 50 parts and 12 ~ 25 parts is even, be mixed with solution;
2) 2 ~ 4 parts of ketoimine solidifying agent are joined described in step 1) and mix in solution, place standby; The preparation method of described ketoimine solidifying agent is: by polyamine and ketone, according to mol ratio, be 1:1.2 ~ 2 reacting by heating, dehydrating condensation, except the water producing in dereaction;
3) quartz sand of the coupling agent of 1.6 ~ 2.2 parts and 1000 parts is mixed;
4) by step 2) in the quartz sand of solution after joining step 3) gained and processing in, mix, obtain wrapping up in advance sand;
5) the pre-parcel sand of being prepared by step 4) scatter, and hangs after sand finish-drying to be wrapped, is ground loose, and pack sealing is preserved.
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| CN104403651B (en) * | 2014-09-29 | 2017-06-30 | 赵辰 | A kind of preparation method of the high-strength oil well wet method anti-collapse particle of spherical solid sand |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1021528A (en) * | 1964-03-26 | 1966-03-02 | Shell Int Research | Method for treating a part of a permeable formation |
| US3478824A (en) * | 1968-04-12 | 1969-11-18 | Chevron Res | Sand consolidation process |
| US4232740A (en) * | 1979-05-23 | 1980-11-11 | Texaco Development Corp. | High temperature stable sand control method |
| US5273666A (en) * | 1991-12-19 | 1993-12-28 | Mobil Oil Corporation | Consolidation agent and method |
| WO2001083942A1 (en) * | 2000-05-02 | 2001-11-08 | Sofitech N.V. | Self-diverting resin systems for sand consolidation |
| CN1640981A (en) * | 2004-01-16 | 2005-07-20 | 北京仁创制造技术研究院 | Cladded quartz sand fracturing support agent for oil production |
| CN101563436A (en) * | 2006-12-19 | 2009-10-21 | 陶氏环球技术公司 | A new coating composition for proppant and the method of making the same |
| CN101654615A (en) * | 2008-08-18 | 2010-02-24 | 北京仁创科技集团有限公司 | Composite particles, fracture proppant containing same and method for preparing fracture proppant |
| CN101666225A (en) * | 2008-09-04 | 2010-03-10 | 北京仁创科技集团有限公司 | Surface-modified proppant |
| CN101665686A (en) * | 2008-09-04 | 2010-03-10 | 北京仁创科技集团有限公司 | Method for preparing surface-modified proppant |
| CN101665687A (en) * | 2008-09-04 | 2010-03-10 | 北京仁创科技集团有限公司 | Method for preparing proppant |
| CN101747882A (en) * | 2010-01-11 | 2010-06-23 | 中国石油大学(华东) | Tectorial membrane sand solidifying system suitable for low-temperature reservoir sand prevention |
-
2012
- 2012-04-28 CN CN201210129925.7A patent/CN102660246B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1021528A (en) * | 1964-03-26 | 1966-03-02 | Shell Int Research | Method for treating a part of a permeable formation |
| US3478824A (en) * | 1968-04-12 | 1969-11-18 | Chevron Res | Sand consolidation process |
| US4232740A (en) * | 1979-05-23 | 1980-11-11 | Texaco Development Corp. | High temperature stable sand control method |
| US5273666A (en) * | 1991-12-19 | 1993-12-28 | Mobil Oil Corporation | Consolidation agent and method |
| WO2001083942A1 (en) * | 2000-05-02 | 2001-11-08 | Sofitech N.V. | Self-diverting resin systems for sand consolidation |
| CN1640981A (en) * | 2004-01-16 | 2005-07-20 | 北京仁创制造技术研究院 | Cladded quartz sand fracturing support agent for oil production |
| CN101563436A (en) * | 2006-12-19 | 2009-10-21 | 陶氏环球技术公司 | A new coating composition for proppant and the method of making the same |
| CN101654615A (en) * | 2008-08-18 | 2010-02-24 | 北京仁创科技集团有限公司 | Composite particles, fracture proppant containing same and method for preparing fracture proppant |
| CN101666225A (en) * | 2008-09-04 | 2010-03-10 | 北京仁创科技集团有限公司 | Surface-modified proppant |
| CN101665686A (en) * | 2008-09-04 | 2010-03-10 | 北京仁创科技集团有限公司 | Method for preparing surface-modified proppant |
| CN101665687A (en) * | 2008-09-04 | 2010-03-10 | 北京仁创科技集团有限公司 | Method for preparing proppant |
| CN101747882A (en) * | 2010-01-11 | 2010-06-23 | 中国石油大学(华东) | Tectorial membrane sand solidifying system suitable for low-temperature reservoir sand prevention |
Non-Patent Citations (2)
| Title |
|---|
| 环氧树脂胺类固化剂的改性;肖卫东等;《胶体与聚合物》;20010625;第19卷(第2期);第28页第4节 * |
| 肖卫东等.环氧树脂胺类固化剂的改性.《胶体与聚合物》.2001,第19卷(第2期), * |
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Application publication date: 20120912 Assignee: Chengde Bei Yan founding materials Co., Ltd Assignor: Wuhan Institute of Technology Contract record no.: 2015110000027 Denomination of invention: Precoated sand used for sand prevention for intermediate and low temperate oil deposit and preparation method thereof Granted publication date: 20141105 License type: Exclusive License Record date: 20150701 |
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