CN103541728A - Well leakage speed measuring device used for well drilling - Google Patents
Well leakage speed measuring device used for well drilling Download PDFInfo
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- CN103541728A CN103541728A CN201210235735.3A CN201210235735A CN103541728A CN 103541728 A CN103541728 A CN 103541728A CN 201210235735 A CN201210235735 A CN 201210235735A CN 103541728 A CN103541728 A CN 103541728A
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Abstract
The invention relates to a well leakage speed measuring device used for well drilling. The well leakage speed measuring device used for well drilling comprises a tension measuring system and a depth measuring system, wherein the tension measuring system comprises a base (1) and a fixing plate (2) connected with the base (1), an ampere meter (3) is fixed on the fixing plate (2) and is connected with a battery pack (4), a fixed resistor (5), a keyset (6) and a slide rheostat (7) through wires, and a sliding pointer of the slide rheostat (7) is connected between a hard spring (8) and a fixed pulley (9); the depth measuring system comprises a winch (11), and the winch (11) is connected with a weighting ball (11) through a flexible steel wire rope (13) provided with scale marks after the flexible steel wire rope (13) bypasses the fixed pulley (10). The well leakage speed measuring device used for well drilling can be well applied to well drilling and used for measuring well leakage speed fast to achieve fast control of complicated accidents.
Description
Technical field
The invention belongs to Oil-Gas Well Engineering field, be specifically related to a kind of drilling well and leak speed measuring device by leakage.
Background technology
Due to own characteristics such as Oil-Gas Well Engineering high investment, high risk and high reward, in its drilling process, there will be unavoidably various complex accident, thereby delay the operation duration or cause large loss.And leakage is modal a kind of complex accident, in drilling process, while finding leakage, needs judgement leakage speed fast, thereby make corresponding emergency measure.Judgement leakage speed mainly contains following several mode at present:
One, the mud pit amount of returning method of comparison
While there is leakage in drilling process, by mud pit place, measure the amount of returning of mud and under normal circumstances the mud amount of returning contrast, the difference drawing judges the leakage speed of leakage, takes corresponding emergency measure.But because the mud returning is originally just lossy in process on the way, and the time of whole process consumption is longer, thereby likely make hole condition more worsen, causes more serious accident.Especially in the situation that leakage is serious, if also adopt the mud pit amount of returning method of comparison, very possible mud pit is basic does not just return to next mud, occurs the situation of " being gone for ever ", and this technology is restricted especially.
Two, stop slush pump hydrostatic level observation
While there is leakage in drilling process, the slush pump that stops immediately, with light-illuminating mud face, observes the speed that mud face declines at well head place.But there is the defect of following two aspects in it: if the well of 1 institute operation is very dark and leakage is very serious, mud liquid level disappears at well head soon, is difficult to judge in time Lou speed at well head.Although 2 can judge leakage speed to a certain extent, the result of each range estimation is all very coarse, can not judge accurately.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of drilling well and leaks speed measuring device by leakage.This kind of drilling well is leaked speed measuring device by leakage and can be applied in preferably in drilling well, when leakage accident occurs, can measure in time leakage speed, the object that reaches judgement leakage situation and take corresponding measure.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of drilling well is leaked speed measuring device by leakage, it is characterized in that: it comprises tension measurement system and depth-measuring system, described tension measurement system comprises base 1, the fixed head 2 being connected with base 1, on fixed head 2, be fixed with ammeter 3, ammeter 3 use wires are connected with battery pack 4, fixed resistance 5, telegraph key 6, slide rheostat 7, the sliding pointer of slide rheostat 7 is connected between hard spring 8, fixed pulley 9; Described depth-measuring system comprises winch 12, winch 12 with increase the weight of bead 11 use and mark graduated flexible wire ropes 13 and walk around fixed pulley 10 and couple together.Press such scheme, described battery voltage is 6V, and the range of ammeter is 0-0.6A, and fixed value resistance resistance is 10 Ω, and slide rheostat resistance is 50 Ω/cm, and the maximum pull that hard spring can bear is 150N.In actual process, ammeter show value and spring tension are linear relationships, and the size of pulling force by spring can judge and increases the weight of drilling fluid liquid relation of plane in bead and well, so just can increase the weight of drilling fluid liquid relation of plane in bead and well by the indicated value judgement of ammeter.
Design principle of the present invention:
In drilling process, be difficult to sail right before the wind, conventionally there will be various complex accident.And leakage is common a kind of complex accident.The present invention, in actual drilling process, when there is leakage, controls the transferring in well head bore hole annulus with graduated wire rope by winch.By ammeter show value, diminish for the first time to judge that wire rope lower end increases the weight of liquid level on mud that bead touches bore hole annulus, continue to transfer and stop winch after the wire rope L of certain length and transfer, ammeter show value become large after the mud liquid level of explanation bore hole annulus lower than increasing the weight of bead.The time difference T changing by recording ammeter show value, thus can calculate the decrease speed L/T of mud liquid level, be multiplied by the bore hole annulus sectional area A of well head and then can calculate leakage and leak fast object.
The speed that winch is transferred in addition, considers on the one hand that leakage is too fast and can not transfer too slowly, on the other hand for writing time poor T and length L, lowering velocity can not be too high.According to experiment and 15 ms/min of calculative determinations.
Wire rope end increase the weight of the degree of depth L of bead in mud, consider that on the one hand the record of time difference is convenient, can not be too short; In order to shorten the time of whole measuring process, be difficult for oversize on the other hand.According to experiment and calculative determination, be 15 meters of left and right.
This drilling well is leaked speed measuring device when drilling well generation leakage is used by leakage: (1) first takes device well head place, and gravity bead is put into well head annular space, closes telegraph key; (2) transfer winch, lowering velocity is controlled to 15 ms/min of left and right, optionally do little adjustment, guarantee that lowering velocity is greater than mud liquid level decrease speed; (3) transfer winch, when reducing Deng ammeter show value, record a time value T1 (unit be minute), after continuing to transfer wire rope L length (15 meters of left and right of empirical value), stop, while waiting ammeter show value to increase, recording a time value T2 (unit be minute); (4) and then can calculate leakage and leak speed=0.0780 * L/ (T2-T1), unit is m
3/ minute, wherein 0.0780 is the annular space cross-sectional area of well head, the m of unit
2.
Beneficial effect of the present invention:
It is easy and simple to handle that drilling well provided by the invention is leaked speed measuring device by leakage, convenient control and regulation rotating speed, can be applied in preferably in drilling well, there is the good and size of motility and deadweight is little, one-time investment is less, low feature consumes energy, can Quick Measurement leakage speed, reach the object of quick control complex accident.
Accompanying drawing explanation
Fig. 1 is that the schematic diagram of speed measuring device is leaked in the drilling well of the embodiment of the present invention 1 by leakage.Fig. 1 is that the schematic diagram of speed measuring device is leaked in the drilling well of the embodiment of the present invention 1 by leakage.In figure: 1 base, 2 fixed heads, 3 ammeters, 4 battery pack, 5 fixed value resistances, 6 telegraph keys, 7 slide rheostats, 8 hard springs, 9 fixed pulley 1,10 fixed pulleys 2,11 increase the weight of bead, 12 winches, 13 flexible wire ropes.
The specific embodiment
Drilling well is leaked speed measuring device by leakage, it is characterized in that: it comprises tension measurement system and depth-measuring system, described tension measurement system comprises base 1, the fixed head 2 being connected with base 1, on fixed head 2, be fixed with ammeter 3, ammeter 3 use wires are connected with battery pack 4, fixed resistance 5, telegraph key 6, slide rheostat 7, the sliding pointer of slide rheostat 7 is connected between hard spring 8, fixed pulley 9; Described depth-measuring system comprises winch 12, winch 12 with increase the weight of bead 11 use and mark graduated flexible wire ropes 13 and walk around fixed pulley 10 and couple together.This drilling well is leaked speed measuring device by leakage and can be applied in preferably in drilling well, and Quick Measurement leakage speed reaches the object of quick control complex accident.
Particularly, the present invention adopts following field experiment to illustrate:
Laboratory apparatus: P7001 rig; 5 cun of drilling rods; Well; This drilling well is leaked speed measuring device by leakage
Experimental technique:
(1) in 339.7mm cased well section, measure that (annular space sectional area is 0.078m
2), by the speed of 15 meters of left and right, transfer winch connected wire rope, record increases the weight of length L and the time difference T2-T1 of bead in mud simultaneously, and above-mentioned experiment is repeated 4 times, and concrete outcome is in Table 1:
In table 1339.7mm sleeve pipe, speed is leaked in well logging
(2) in 311.2mm barefoot interval, measure that (annular space sectional area is 0.0634m
2), by the speed of 15 meters of left and right, transfer winch connected wire rope, record increases the weight of length L and the time difference T2-T1 of bead in mud simultaneously, and above-mentioned experiment is repeated 4 times, and concrete outcome is in Table 2:
In table 2311.2mm bore hole, speed is leaked in well logging
Contrast visible: use after the leakage speed measuring device of the present embodiment, whole measuring process operational excellence, can realize security measurement leakage and leak speed, and in the time of the measurement in barefoot interval, because cross-sectional area is larger, the velocity ratio that annulus liquid level declines is very fast, causes Measuring Time poor shorter, during measurement, can suitably by increasing the weight of the length L of bead in mud, increase more convenient like this Measuring Time.
Claims (2)
1. a drilling well is leaked speed measuring device by leakage, it is characterized in that: it comprises tension measurement system and depth-measuring system, described tension measurement system comprises base (1), the fixed head (2) being connected with base (1), on fixed head (2), be fixed with ammeter (3), ammeter (3) is connected with battery pack (4), fixed resistance (5), telegraph key (6), slide rheostat (7) with wire, the sliding pointer of slide rheostat (7) is connected between hard spring (8), fixed pulley (9); Described depth-measuring system comprises winch (12), winch (12) with increase the weight of bead (11) and walk around fixed pulley (10) and couple together with marking graduated flexible wire ropes (13).
2. drilling well according to claim 1 is leaked speed measuring device by leakage, described battery voltage is 6V, and the range of ammeter is 0-0.6A, and fixed value resistance resistance is 10 Ω, slide rheostat resistance is 50 Ω/cm, and the maximum pull that hard spring can bear is 150N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235735.3A CN103541728A (en) | 2012-07-10 | 2012-07-10 | Well leakage speed measuring device used for well drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210235735.3A CN103541728A (en) | 2012-07-10 | 2012-07-10 | Well leakage speed measuring device used for well drilling |
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| CN103541728A true CN103541728A (en) | 2014-01-29 |
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| CN201210235735.3A Pending CN103541728A (en) | 2012-07-10 | 2012-07-10 | Well leakage speed measuring device used for well drilling |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729868A (en) * | 2018-05-25 | 2018-11-02 | 中国海洋石油集团有限公司 | A kind of deep sea drilling overflow and leakage monitoring method |
| CN109159926A (en) * | 2018-06-14 | 2019-01-08 | 上海卫星工程研究所 | A kind of rope tension precision adjustment unit applied to spacecraft |
| CN116104484A (en) * | 2023-04-12 | 2023-05-12 | 咸阳西仪秦油石油设备有限公司 | Oil well depth, speed and rope tension winch metering device |
-
2012
- 2012-07-10 CN CN201210235735.3A patent/CN103541728A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729868A (en) * | 2018-05-25 | 2018-11-02 | 中国海洋石油集团有限公司 | A kind of deep sea drilling overflow and leakage monitoring method |
| CN109159926A (en) * | 2018-06-14 | 2019-01-08 | 上海卫星工程研究所 | A kind of rope tension precision adjustment unit applied to spacecraft |
| CN116104484A (en) * | 2023-04-12 | 2023-05-12 | 咸阳西仪秦油石油设备有限公司 | Oil well depth, speed and rope tension winch metering device |
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Application publication date: 20140129 |