CN104373116A - Online continuous monitoring sampling protecting device for external oil-water well casing pressure - Google Patents
Online continuous monitoring sampling protecting device for external oil-water well casing pressure Download PDFInfo
- Publication number
- CN104373116A CN104373116A CN201410616923.XA CN201410616923A CN104373116A CN 104373116 A CN104373116 A CN 104373116A CN 201410616923 A CN201410616923 A CN 201410616923A CN 104373116 A CN104373116 A CN 104373116A
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- pressure
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- casing
- threeway
- continuous monitoring
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 238000005070 sampling Methods 0.000 title claims abstract description 20
- 238000002347 injection Methods 0.000 claims abstract description 15
- 239000007924 injection Substances 0.000 claims abstract description 15
- 239000000523 sample Substances 0.000 claims description 43
- 238000009530 blood pressure measurement Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000470 constituent Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
- E21B49/088—Well testing, e.g. testing for reservoir productivity or formation parameters combined with sampling
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to an online continuous monitoring sampling protecting device for external oil-water well casing pressure. The problem that an existing casing is damaged by being extruded or broken is mainly solved. The online continuous monitoring sampling protecting device is characterized in that the upper portion of a pressure measuring sampling tube (4) is connected with a ground device (18), the lower portion of the pressure measuring sampling tube (4) is connected with a pressure sampling sampler (8), the ground device (18) is arranged at the position of an oil-water well mouth (27) and comprises a tee joint I (17), the lower portion of the tee joint I (17) is connected with a well shut-in valve (30), the lower portion of the well shut-in valve (30) is connected with the pressure measuring sampling tube (4), the upper portion of the tee joint I (17) is connected with a liquid injection exhaust and drainage valve (16), and a side face connector of the tee joint I (17) is connected with a pressure measuring recording instrument (14) and a sampling valve (13). According to the online continuous monitoring sampling protecting device, changes of the external casing pressure and changes of water quality components can be monitored in real time, so that corresponding measures are adopted before the casing is extruded or broke, and casing damages are avoided or reduced.
Description
Technical field
The present invention relates to oilfield, a kind ofly specifically carry out on-line real time monitoring, real time sample and protect Casing Failure not to be extruded or the oil-water well cover external pressure on-line continuous monitoring sampling protective device of bad break for Casing Failure external pressure.
Background technology
In recent years, owing to strengthening oil field injection and extraction intensity, cause old filed to occur casing damage district in blocks, some block casing damage well number accounts for about 50% of total well number, and casing damage scope is in increasing trend year by year.At present, the sleeve pipe direction of extrusion is without unified rule, and the whole height of typical floor (tender two sections) is about about 10 meters, and in this region, single-point, multiple spot, multi-direction extruding or bad break appear in sleeve pipe, mostly are serpentine.In addition, close on the suffered direction of extrusion between well uncertain, in same block, there is good well and bad well replaces bad break phenomenon, without unified rule, therefore known, sleeve pipe occurs that the source of damage is determined jointly by block factor and individual well factor, comprises geology ecosystem situation, drilling well and injection-production method and development scheme, note adopts composition and cementing quality, production maintenance measure etc.Through investigation statistics, in the casing damage well occurred, about 60% casing deformation or the bad break position typical floor (tender two sections) in oil field, all there is typical floor (tender two sections) in most of oil field, be about between 600 ~ 1000 meters apart from the earth's surface degree of depth, and this typical floor is mainly fine and close dunn bass, there is bedding phenomenon, fine and close dunn bass does not generally seep water, but after long-term high pressure water injection, multilayer dunn bass interlayer can be made to occur cleavage phenomenon, produce slippage, the sleeve pipe at extruding or this typical floor place of bad break, cause casing damage, casing repairing cost very high (general 60 ~ 1,000,000/well) simultaneously, cause very large waste.
Summary of the invention
In order to overcome existing sleeve pipe be squeezed or bad break and occur damage deficiency; the invention provides a kind of oil-water well cover external pressure on-line continuous monitoring sampling protective device; this oil-water well cover external pressure on-line continuous monitoring sampling protective device can the pressure change of Real-Time Monitoring jacket exterior and water-quality constituents change; to take corresponding measure before extruding or bad break appear in sleeve pipe; sleeve pipe is played a protective role, thus avoids or reduce casing damage.
Technical scheme of the present invention is: a kind of oil-water well cover external pressure on-line continuous monitoring sampling protective device, comprise the pressure measurement probe tube be placed between bore hole and production casing, described pressure measurement probe tube top connects ground installation, and pressure measurement probe tube bottom connects pressure-testing sampler;
Described ground installation is placed in oil-water well well head place, comprise threeway I, shut-in valve, pressure measxurement recorder, described threeway I bottom is connected with shut-in valve, shut-in valve bottom is connected with pressure measurement probe tube by transition short circuit, and transition short circuit outside is provided with pressure measurement probe tube sheath, described threeway I top is connected with fluid injection exhaust draining valve, and threeway I side face port is connected with pressure measxurement recorder and sample cock.
Described pressure-testing sampler comprises one-level screen casing, secondary screen casing, three grades of screen casings, is connected, and screen casing at different levels all has mesh bottom screen casing at different levels by stationary links.
Described fluid injection exhaust draining valve top is provided with fluid injection exhaust leakage fluid dram, described threeway I side face port connects blocked valve and releasing pressure automatically safety valve successively, releasing pressure automatically safety valve is connected with threeway II, threeway II is connected to sample cock and pressure measxurement recorder.
The present invention has following beneficial effect: owing to taking such scheme, pressure-testing sampler is placed in the monitoring location of typical floor, pressure measurement probe tube is utilized to be connected with oil-water well wellhead ground device pressure measxurement recorder, get final product the water string pressure change of Real-Time Monitoring pre-position, and the change of track record pressure.After pressure increases, by the releasing pressure automatically safety valve on ground by earth pressure release, avoid the formation of water under high pressure string, reduce or eliminate shale dislocation mobile time to the extruding of sleeve pipe and bad break, thus monitoring for protection position sleeve pipe is not damaged.Meanwhile, water quality sample can be received at sample tap, be convenient to analyze water-quality constituents, understanding the water-quality constituents change of monitoring location place is, before extruding or bad break appear in sleeve pipe, grasps water under high pressure string stressor layer problem in real time, and take corresponding measure, avoid or reduce the probability of casing failure.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
1-conduit in figure, 2-surface pipe, 3-bore hole, 4-pressure measurement probe tube, 5-box cupling I, 6-one-level screen casing, 7-secondary screen casing, 8-pressure-testing sampler, 9-tri-grades of screen casings, 10-mesh, 11-stationary links, 12-sample tap, 13-sample cock, 14-pressure measxurement recorder, 15-fluid injection exhaust leakage fluid dram, 16-fluid injection exhaust draining valve, 17-threeway I, 18-ground installation, 19-box cupling II, 20-transition short circuit, 21-box cupling III, 22-pressure measurement probe tube sheath, 23-production casing, 24-oil pipe, 25-cement sheath, 26-threeway II, 27-oil-water well well head, 28-releasing pressure automatically safety valve, 29-blocked valve, 30-shut-in valve, 31-underground device, A-typical floor.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, a kind of oil-water well cover external pressure on-line continuous monitoring sampling protective device, is made up of ground installation 18 and underground device 31, is connected therebetween by pressure measurement probe tube 4.In drilling process, after taking out drilling tool, pressure measurement probe tube 4 and production casing 23 are with at present will, and the two fixes by jig, pressure measurement probe tube 4 and underground device 31 is made to be placed between bore hole 3 and production casing 23, bore hole 3 outside is provided with surface pipe 2 and conduit 1, and production casing 23 inside is oil pipe 24.Pressure measurement probe tube 4 top connects ground installation 18, and pressure measurement probe tube 4 bottom connects underground device 31 by box cupling I5.Described underground device 31 comprises pressure-testing sampler 8, and pressure-testing sampler 8 lowered position is tender two sections of typical floor A() place, be positioned at cement sheath 25 top, this position is that production casing 23 is easily extruded or bad break position, is monitoring point herein.Pressure-testing sampler 8 comprises one-level screen casing 6, secondary screen casing 7, three grades of screen casings 9, and screen casing at different levels all has mesh 10, and screen casing lower end at different levels is connected to form entirety by stationary links 11, makes screen casing at different levels fixed.
Described ground installation 18 is placed in oil-water well well head 27 place; comprise threeway I17, shut-in valve 30, pressure measxurement recorder 14; pressure measurement probe tube 4 top connects transition short circuit 20 by box cupling III 21; and transition short circuit 20 outside is provided with pressure measurement probe tube sheath 22; pressure measurement probe tube sheath 22 can protect the screw thread of sampling pressure-measuring pipe 4 upper end not damaged, and is easy to change.What pressure measurement probe tube sheath 22 was fixed on 0.2-0.5 rice, oil-water well well head 27 lower end returns in high cement, pressure measurement probe tube 4 lifting is suspended between production casing 23 and bore hole 3, and makes it fixed, in operation process, loosening phenomenon does not occur.Filter short circuit 20 upper end and connect shut-in valve 30 by box cupling II 19, when each device in shut-in valve top or tie point break down, can be closed, be convenient to maintenance or change each parts in shut-in valve 30 top.Shut-in valve 30 top connecting tee I17, threeway I17 upper end is connected with fluid injection exhaust draining valve 16, and fluid injection exhaust draining valve 16 is provided with fluid injection exhaust leakage fluid dram 15.Threeway I17 side face port is connected with blocked valve 29, releasing pressure automatically safety valve 28 in turn, releasing pressure automatically safety valve 28 is connected with threeway II 26, threeway II 26 is connected to sample cock 13 and pressure measxurement recorder 14, sample cock 13 place is provided with sample tap 12.
Under fluid injection exhaust draining valve 16 closedown and blocked valve 29 open mode, as water under high pressure string appears in monitoring point place, releasing pressure automatically safety valve 28 is opened automatically, monitoring point place water quality can be discharged, to make monitoring point place pressure be in equilibrium state, anti-sealing string hypertonia, causes production casing 23 to be extruded or bad break, underground water can be taken out by sample tap 12 simultaneously, be convenient to assay.Wherein when oil-water well normally works, the pressure change at monitoring point place, pressure measxurement recorder 14 Real-Time Monitoring underground, and automatically record pressure delta data.
Therefore, this device can realize following functions:
1. jacket exterior pressure is directly monitored.Utilize the conduction principle between water and pressure, pressure-testing sampler 8 is placed in the monitoring location place of typical floor A, utilize pressure measurement probe tube 4 to be connected with the pressure measxurement recorder 14 on ground installation 18, get final product the water string pressure change of the monitored position of Real-Time Monitoring, and the change of track record pressure.
2. monitoring location water quality sample is directly taken out.When Casing Failure external monitoring position water body pressure increases, pressure-testing sampler 8, pressure measurement probe tube 4 is utilized to be communicated with oil-water well wellhead ground device sample tap 12, after pressure increases, water body can be made to be flowed out by pressure measurement probe tube 4, water quality sample is received at sample tap 12 place, be convenient to analyze water-quality constituents, understand the water-quality constituents change of monitoring location place.
3. directly monitoring location place water under high pressure string pressure is unloaded.When production casing 23 external monitoring position water body pressure increases; the releasing pressure automatically safety valve 28 be provided with by ground installation 18; by earth pressure release; avoid the formation of water under high pressure string, reduce or eliminate shale dislocation mobile time to the extruding of sleeve pipe and bad break thus monitoring for protection position sleeve pipe is not damaged.
5. online real-time operation.This oil-water well cover external pressure on-line continuous monitoring sampling protective device; can the pressure change of monitoring sleeve external monitoring position accurately directly perceived in real time; and the water-quality constituents change of monitoring location place can be taken out; simultaneously before extruding or bad break appear in sleeve pipe; real-time grasp water under high pressure string stressor layer problem; and take corresponding measure, sleeve pipe is played a protective role, avoids or reduce the probability of casing failure.
Claims (3)
1. an oil-water well cover external pressure on-line continuous monitoring sampling protective device, comprise the pressure measurement probe tube (4) be placed between bore hole (3) and production casing (23), it is characterized in that: described pressure measurement probe tube (4) top connects ground installation (18), pressure measurement probe tube (4) bottom connects pressure-testing sampler (8);
Described ground installation (18) is placed in oil-water well well head (27) place, comprise threeway I(17), shut-in valve (30), pressure measxurement recorder (14), described threeway I(17) bottom is connected with shut-in valve (30), shut-in valve (30) bottom is connected with pressure measurement probe tube (4) by transition short circuit (20), and transition short circuit (20) outside is provided with pressure measurement probe tube sheath (22), described threeway I(17) top be connected with fluid injection exhaust draining valve (16), threeway I(17) side face port is connected with pressure measxurement recorder (14) and sample cock (13).
2. oil-water well cover external pressure on-line continuous monitoring sampling protective device according to claim 1; it is characterized in that: described pressure-testing sampler (8) comprises one-level screen casing (6), secondary screen casing (7), three grades of screen casings (9); connected by stationary links (11) bottom screen casing at different levels, and screen casing at different levels all has mesh (10).
3. oil-water well cover external pressure on-line continuous monitoring sampling protective device according to claim 1; it is characterized in that: described fluid injection exhaust draining valve (16) top is provided with fluid injection exhaust leakage fluid dram (15); described threeway I(17) side face port connects blocked valve (29) and releasing pressure automatically safety valve (28) successively; releasing pressure automatically safety valve (28) is connected with threeway II (26), threeway II (26) is connected to sample cock (13) and pressure measxurement recorder (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616923.XA CN104373116B (en) | 2014-11-05 | 2014-11-05 | Online continuous monitoring sampling protecting device for external oil-water well casing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616923.XA CN104373116B (en) | 2014-11-05 | 2014-11-05 | Online continuous monitoring sampling protecting device for external oil-water well casing pressure |
Publications (2)
| Publication Number | Publication Date |
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| CN104373116A true CN104373116A (en) | 2015-02-25 |
| CN104373116B CN104373116B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410616923.XA Active CN104373116B (en) | 2014-11-05 | 2014-11-05 | Online continuous monitoring sampling protecting device for external oil-water well casing pressure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843621A (en) * | 2015-03-26 | 2015-08-19 | 西南石油大学 | Gas well oil jacket annular protecting fluid replacement device and method thereof |
| CN110617063A (en) * | 2019-11-10 | 2019-12-27 | 夏惠芬 | Deep well casing external annulus two-stage monitoring sampler and monitoring method thereof |
| CN110671097A (en) * | 2019-11-10 | 2020-01-10 | 夏惠芬 | Deep well casing external annular thin pipe multi-parameter online monitoring device and monitoring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4475591A (en) * | 1982-08-06 | 1984-10-09 | Exxon Production Research Co. | Method for monitoring subterranean fluid communication and migration |
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2014
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843621A (en) * | 2015-03-26 | 2015-08-19 | 西南石油大学 | Gas well oil jacket annular protecting fluid replacement device and method thereof |
| CN110617063A (en) * | 2019-11-10 | 2019-12-27 | 夏惠芬 | Deep well casing external annulus two-stage monitoring sampler and monitoring method thereof |
| CN110671097A (en) * | 2019-11-10 | 2020-01-10 | 夏惠芬 | Deep well casing external annular thin pipe multi-parameter online monitoring device and monitoring method |
| CN110617063B (en) * | 2019-11-10 | 2024-01-05 | 宝鸡市凯顺海陆装备科技有限公司 | Deep well sleeve outer annular space two-stage monitoring sampler and monitoring method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104373116B (en) | 2017-05-17 |
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Effective date of registration: 20161205 Address after: 163316 Daqing science and Technology Development Zone, Heilongjiang province high tech Industrial Park, building A1-2, room 503 Applicant after: Li Fujun Address before: Room 1, No. 163316, new industrial incubator, No. 32, torch street, Daqing, Heilongjiang, China Applicant before: DAQING XUEFU PETROLEUM SCIENCE & TECHNOLOGY CO., LTD. Applicant before: Northeast Petroleum University Applicant before: Daqing Development Zone Dongyou New Technology Co., Ltd. |
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Effective date of registration: 20171120 Address after: 163000 Heilongjiang Daqing hi tech Zone torch New Street No. 32 new industry incubator 1 building 834 room Patentee after: DAQING XUEFU PETROLEUM SCIENCE & TECHNOLOGY CO., LTD. Address before: 163316 Daqing science and Technology Development Zone, Heilongjiang province high tech Industrial Park, building A1-2, room 503 Patentee before: Li Fujun |