CN112360438A - Underground rapid water exploration test pipe column and using method - Google Patents
Underground rapid water exploration test pipe column and using method Download PDFInfo
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- CN112360438A CN112360438A CN202011397453.4A CN202011397453A CN112360438A CN 112360438 A CN112360438 A CN 112360438A CN 202011397453 A CN202011397453 A CN 202011397453A CN 112360438 A CN112360438 A CN 112360438A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 230000000149 penetrating effect Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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Classifications
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- 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
- E21B47/10—Locating fluid leaks, intrusions or movements
-
- 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
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a downhole rapid water exploration test pipe column and a using method thereof, wherein the downhole rapid water exploration test pipe column comprises a continuous oil pipe, a cable penetrating joint, a motor, a screw pump and a flow water content tester which are sequentially connected from top to bottom, the upper end of the flow water content tester is connected with a first packer, the lower end of the flow water content tester is connected with a second packer, a liquid inlet hole is further formed in the flow water content tester, a cable is arranged in the continuous oil pipe, and the cable penetrates through the cable penetrating joint to be electrically connected with the motor, the flow water content tester, the first packer and the second packer. Through two electronic packers, separate each layer section, guaranteed that the test can not receive the influence of other intervals production fluids, realized the horizontal well section by section pump drainage, each layer section flow moisture condition of real-time supervision respectively to realize out the judgement of water interval fast.
Description
Technical Field
The invention belongs to the technical field of oil extraction, and particularly relates to a downhole rapid water exploration test pipe column and a using method thereof.
Background
In recent years, horizontal wells are used as important technical means for effectively developing low-permeability oil fields, the number of applied wells is rapidly increased, and meanwhile, the problems of water breakthrough and even sudden water flooding of horizontal wells developed by water injection are increasingly highlighted under the influence of factors such as low-permeability reservoir heterogeneity, artificial fractures, natural fractures and the like. Under the background, the attack and customs tests of the horizontal well water exploration technology are developed in various oil fields in China. Based on the ubiquitous low-liquid-volume production characteristic of a horizontal well for developing a low-permeability oil field, the conventional PLT well logging technology cannot be adapted, the horizontal well mechanical packing segmented production water exploration testing technology is formed in the current main research and test, the water exploration testing period is mainly shown to be long while the technology is expanded and applied, and a basis cannot be timely provided for early adjustment and comprehensive treatment of the water exploration horizontal well. Aiming at the technical research of rapid water exploration of low-liquid-volume horizontal wells in low-permeability oil fields, the technical research shows that the water exploration is in the test exploration stage on the whole, and no mature technical method can be used for reference.
Disclosure of Invention
The invention aims to provide a downhole rapid water exploration test pipe column and a using method thereof, and aims to solve the problem that the field implementation of a horizontal well mechanical packing subsection production water exploration test technology is long in water exploration period.
The invention aims to realize the purpose by the following means, and the underground rapid water exploration test pipe column comprises a continuous oil pipe, a cable penetrating joint, a motor, a screw pump and a flow water content tester which are sequentially connected from top to bottom, wherein the upper end of the flow water content tester is connected with a first packer, the lower end of the flow water content tester is connected with a second packer, a liquid inlet hole is further formed in the flow water content tester, the cable is arranged in the continuous oil pipe, and the cable penetrates through the cable penetrating joint to be electrically connected with the motor, the flow water content tester, the first packer and the second packer.
The upper end of the screw pump is provided with a discharge hole.
The cable is a single core cable.
The first packer and the second packer are both electric packers.
And the output shaft of the motor is connected with the screw pump.
A using method of a downhole rapid water exploration test pipe column,
firstly, a pipe column is put in, the other end of a cable is connected with ground equipment, and the underground quick water exploration test pipe column is put into a well;
secondly, a water finding test is carried out, wherein ground equipment starts a first packer and a second packer through a cable to isolate a perforated layer section between the two packers from other perforated layer sections, a motor is started to drive a screw pump to suck liquid between the two packers into a flow water content tester from a liquid inlet hole, the flow water content tester transmits data back to the ground equipment through the cable, and the liquid enters the screw pump after passing through the flow water content tester and is discharged into the annular space of an oil pipe from the upper end of the screw pump;
and thirdly, testing water exploration of another interval, namely closing the motor, the first packer and the second packer, unsealing the first packer and the second packer, dragging the underground quick water exploration test pipe column by the ground equipment until the pipe column reaches the specified position, repeating the second step, and testing the perforated interval at the new position until all the underground intervals are tested.
The surface equipment drags the underground quick water exploration test pipe column, and a ground continuous oil pipe vehicle is specifically adopted to drag the underground quick water exploration test pipe column.
The invention has the beneficial effects that: 1. through two electronic packers, separate each layer section, guaranteed that the test try can not receive the influence of other intervals production liquid, realized the horizontal well section by section pump drainage, each layer section flow moisture condition of real-time supervision respectively to the discernment in the layer section of realizing out water fast.
2. The produced liquid is discharged to the annular space of the oil pipe through the screw pump instead of being lifted to the ground by the continuous oil pipe, so that the liquid discharge efficiency is high, the load of ground operation equipment can be effectively reduced, and the operation safety risk is reduced.
3. The motor and the screw pump row are adopted, the outer diameter of the cable penetrating in the continuous oil pipe can be effectively reduced, and the cable penetrating in the continuous oil pipe is simple and convenient to operate.
4. The direct current power supply mode of the single-core cable is adopted, the problem of signal interference in the transmission process of the test data of the flow water content tester is solved, and the real-time effective analysis of the monitoring condition of each underground section is realized.
Drawings
FIG. 1 is a schematic structural view of a downhole rapid water exploration test pipe string;
in the figure 1, coiled tubing; 2. a cable; 3. a cable pass-through joint; 4. a motor; 5. a screw pump; 6. a first packer; 7. a flow moisture tester; 8. a liquid inlet hole; 9 second packer.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Detailed Description
[ example 1 ]
As shown in figure 1, the underground rapid water exploration test pipe column comprises a coiled tubing 1, a cable penetrating joint 3, a motor 4, a screw pump 5 and a flow water content tester 7 which are sequentially connected from top to bottom, wherein the upper end of the flow water content tester 7 is connected with a first packer 6, the lower end of the flow water content tester 7 is connected with a second packer 9, a liquid inlet hole 8 is further formed in the flow water content tester 7, a cable 2 is arranged in the coiled tubing 1, and the cable 2 penetrates through the cable penetrating joint 3 to be electrically connected with the motor 4, the flow water content tester 7, the first packer 6 and the second packer 9.
The upper end of the screw pump 5 is provided with a discharge hole.
The cable 2 is a single core cable.
The first packer 6 and the second packer 9 are both electric packers.
And an output shaft of the motor 4 is connected with the screw pump 5.
The lower end of the continuous oil pipe 1 is connected with a cable penetrating joint 3 through a screw thread, and the lower end of the cable penetrating joint 3 is connected with a motor 4, a screw pump 5 and a flow water content tester 7 through the screw thread in sequence.
Wherein the output end of the motor 4 is connected with the screw pump 5, and the part of the shell at the upper end of the screw pump 5, which is connected with the motor 4, is provided with a discharge hole so as to discharge the liquid sucked up from the lower end from the discharge hole at the upper end.
The motor 4 rotates to drive the screw pump 5 to rotate, the lower end of the screw pump 5 is connected with the flow moisture tester 7, the outlet of the flow moisture tester 7 is communicated with the screw pump 5, a liquid inlet hole 8 is formed in the shell of the flow moisture tester 7, after the motor 4 is started, the screw pump 5 rotates to suck liquid into the flow moisture tester 7 from the liquid inlet hole 8, then the liquid is sucked into the screw pump 5 from the outlet of the flow moisture tester 7, and the liquid is discharged from a discharge hole at the upper end of the screw pump 5 (namely the left side of the screw pump 5 in the figure) as shown in figure 1.
One end of the cable 2 passes through the cable penetrating joint 3 to be electrically connected with the motor 4, the flow water content tester 7, the first packer 6 and the second packer 9, and the other end of the cable 2 passes through the coiled tubing 1 to be connected to surface equipment.
The first packer 6 and the second packer 9 are both electric packers and are electrically connected with surface equipment through the cable 2 to control setting and unsetting.
The motor 4 is a direct current motor, the cable 2 is a single-core cable, the single-core cable provides direct current for underground equipment and transmits data, and the direct current motor is arranged at the lower end of the coiled tubing 1, so that the single-core cable can be adopted, the external diameter of the single-core cable is small compared with that of a conventional cable, and the threading of the coiled tubing 1 is easy and convenient; meanwhile, the single-core cable supplies direct current to underground tools and instruments, so that the problem of interference of cable power supply and signal transmission can be effectively solved
[ example 2 ]
On the basis of the embodiment 1, as shown in figure 1, a method for using a downhole quick water exploration test pipe column,
firstly, a pipe column is put in, the other end of the cable 2 is connected with ground equipment, and the underground quick water exploration test pipe column is put into a well;
secondly, a water finding test is carried out, wherein ground equipment starts a first packer 6 and a second packer 9 through a cable 2 to isolate a perforation interval between the two packers from other perforation intervals, a motor 4 is started to drive a screw pump 5 to suck liquid between the two packers into a flow water content tester 7 from a liquid inlet hole 8, the flow water content tester 7 transmits data back to the ground equipment through the cable 2, and the liquid enters the screw pump 5 after passing through the flow water content tester 7 and then is discharged into the annular space of an oil pipe from the upper end of the screw pump 5;
and thirdly, performing water detection test on another interval, closing the motor 4, the first packer 6 and the second packer 9, unsealing the first packer 6 and the second packer 9, dragging the underground quick water detection test tubular column by the ground equipment until the tubular column reaches the specified position, repeating the second step, and testing the perforated interval at the new position until all the underground intervals are tested.
The surface equipment drags the underground quick water exploration test pipe column, and a ground continuous oil pipe vehicle is specifically adopted to drag the underground quick water exploration test pipe column.
In the first step, the cable 2 is threaded into the coiled tubing 1, one end of the cable 2 is connected with the cable through joint 3, the other end of the cable is connected with ground equipment, and the underground quick water exploration test pipe column is put into the well after being prepared.
And secondly, after the underground rapid water exploration test pipe column is lowered to a specified position, the ground equipment starts the first packer 6 and the second packer 9, as shown in figure 1, the two ends of the perforated interval are isolated from other underground intervals, the motor 4 is started, the screw pump 5 is started, liquid in the perforated interval is sucked into the water-containing flow tester 7 and is finally discharged into the annulus of the oil pipe from the left side of the screw pump 5, and the data of the water-containing flow tester 7 is transmitted to the ground equipment through the cable 2. Compared with a conventional electric submersible pump, the well shaft produced liquid is lifted to the ground, the liquid drainage efficiency is high, the testing speed is high, the continuous oil pipe 1 is not used as a liquid drainage channel, the load of a wellhead operation vehicle is small, and the risk of operation construction safety is small.
In the process, the liquid in the interval is discharged for a certain time, because the liquid in the interval is mixed with the liquid discharged from each section in the well at the moment, the liquid in the interval is discharged again until the perforation section is discharged again, and the liquid in the interval is the liquid discharged from the perforation section at the moment, and the data at the moment are taken as the standard.
And step three, after the test of one perforation section is finished, closing the two packers and the motor. And dragging the underground quick water exploration test pipe column to the position of the next perforation interval by the ground continuous oil pipe vehicle, repeating the second step, and testing the new perforation interval until all the perforation intervals are tested.
And in the dragging process, the flow water content tester 7 also transmits test data back to the ground in real time, so that the production dynamics of each layer section can be known in real time, and the water outlet layer section can be intuitively and quickly judged.
Claims (7)
1. The utility model provides a quick water exploration test tubular column in pit which characterized in that: the device comprises a coiled tubing (1), a cable traversing joint (3), a motor (4), a screw pump (5) and a flow water-containing tester (7) which are sequentially connected from top to bottom, wherein the upper end of the flow water-containing tester (7) is connected with a first packer (6), and the lower end of the flow water-containing tester is connected with a second packer (9), a liquid inlet hole (8) is further formed in the flow water-containing tester (7), a cable (2) is arranged in the coiled tubing (1), and the cable (2) penetrates through the cable traversing joint (3) and is electrically connected with the motor (4), the flow water-containing tester (7), the first packer (6) and the second packer (9).
2. The downhole rapid water exploration test string as claimed in claim 1, wherein: the upper end of the screw pump (5) is provided with a discharge hole.
3. The downhole rapid water exploration test string as claimed in claim 1, wherein: the cable (2) is a single-core cable.
4. The downhole rapid water exploration test string as claimed in claim 1, wherein: the first packer (6) and the second packer (9) are both electric packers.
5. The downhole rapid water exploration test string as claimed in claim 1, wherein: the output shaft of the motor (4) is connected with the screw pump (5).
6. The application method of the underground rapid water exploration test pipe column is characterized by comprising the following steps:
firstly, a pipe column is put in, the other end of the cable (2) is connected with ground equipment, and the underground quick water exploration test pipe column is put into a well;
secondly, a water finding test is carried out, wherein ground equipment starts a first packer (6) and a second packer (9) through a cable (2) to isolate a perforation interval between the two packers from other perforation intervals, a motor (4) is started to drive a screw pump (5), liquid between the two packers is sucked into a flow water-containing tester (7) from a liquid inlet hole (8), the flow water-containing tester (7) transmits data back to the ground equipment through the cable (2), and the liquid enters the screw pump (5) after passing through the flow water-containing tester (7) and then is discharged into an oil pipe annular space from the upper end of the screw pump (5);
and thirdly, testing water exploration of another interval, namely closing the motor (4), the first packer (6) and the second packer (9), unsealing the first packer (6) and the second packer (9), dragging the underground quick water exploration test pipe column by the ground equipment until the pipe column reaches the specified position, repeating the second step, and testing the perforated interval at the new position until all the underground intervals are tested.
7. The use method of the downhole rapid water exploration test pipe column according to claim 6, wherein the use method comprises the following steps: the surface equipment drags the underground quick water exploration test pipe column, and a ground continuous oil pipe vehicle is specifically adopted to drag the underground quick water exploration test pipe column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397453.4A CN112360438A (en) | 2020-12-04 | 2020-12-04 | Underground rapid water exploration test pipe column and using method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011397453.4A CN112360438A (en) | 2020-12-04 | 2020-12-04 | Underground rapid water exploration test pipe column and using method |
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| CN112360438A true CN112360438A (en) | 2021-02-12 |
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| CN202011397453.4A Pending CN112360438A (en) | 2020-12-04 | 2020-12-04 | Underground rapid water exploration test pipe column and using method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733454A (en) * | 2023-08-01 | 2023-09-12 | 西南石油大学 | Intelligent water finding method for horizontal well |
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| CN104100254A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Sectional synchronous flow rate and water content monitoring and water exploration tubular column of multi-section fracturing horizontal well and working method thereof |
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| US20160003031A1 (en) * | 2013-11-22 | 2016-01-07 | Petrochina Company Limited | Intelligent test system and method for multi-segment fractured horizontal well |
| CN206874269U (en) * | 2017-05-25 | 2018-01-12 | 西安思坦仪器股份有限公司 | A kind of horizontal well production liquid test system for coordinating continuous oil pipe operation |
| CN109751039A (en) * | 2018-12-15 | 2019-05-14 | 洛阳润成石化设备有限公司 | Underground formation testing electric-controlled hydraulic modular test system |
| CN111852449A (en) * | 2020-09-09 | 2020-10-30 | 哈尔滨艾拓普科技有限公司 | Continuous dragging type horizontal well produced liquid sectional test system |
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2020
- 2020-12-04 CN CN202011397453.4A patent/CN112360438A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104100254A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Sectional synchronous flow rate and water content monitoring and water exploration tubular column of multi-section fracturing horizontal well and working method thereof |
| CN104141484A (en) * | 2013-05-07 | 2014-11-12 | 中国石油化工股份有限公司 | Device and method for flowing-back testing of horizontal well production fluid profiles by utilizing coiled tubing for dragging electric pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116733454A (en) * | 2023-08-01 | 2023-09-12 | 西南石油大学 | Intelligent water finding method for horizontal well |
| CN116733454B (en) * | 2023-08-01 | 2024-01-02 | 西南石油大学 | Intelligent water finding method for horizontal well |
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Application publication date: 20210212 |