CN105484736A - Water exploration testing device for horizontal well in offshore oilfield and dynamic dividing and positioning method of water exploration testing device - Google Patents
Water exploration testing device for horizontal well in offshore oilfield and dynamic dividing and positioning method of water exploration testing device Download PDFInfo
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- CN105484736A CN105484736A CN201510883078.7A CN201510883078A CN105484736A CN 105484736 A CN105484736 A CN 105484736A CN 201510883078 A CN201510883078 A CN 201510883078A CN 105484736 A CN105484736 A CN 105484736A
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- water exploration
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- water detection
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- 238000012360 testing method Methods 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 38
- 238000000926 separation method Methods 0.000 claims description 31
- 235000020681 well water Nutrition 0.000 claims description 11
- 239000002349 well water Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 8
- 230000004807 localization Effects 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 239000003129 oil well Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000010865 sewage 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
- E21B47/10—Locating fluid leaks, intrusions or movements
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- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a water exploration testing device for a horizontal well in an offshore oilfield. The water exploration testing device comprises a downhole crawler, a lower divider, a water content tester and an upper divider which are connected in sequence. The invention further discloses a dynamic dividing and positioning method using the water exploration testing device. The method includes the steps that firstly, the water exploration testing device is lowered into the well; secondly, the downhole crawler pulls the water exploration testing device to a target interval, water exploration testing is conducted, and data is fed back to the ground; thirdly, analog computation of the flow field change of a wellhole is conducted through ground software, and a water exit interval is positioned to achieve accurate water exploration; fourthly, the downhole crawler pulls the water exploration testing device to a next target interval, water exploration testing is conducted again, and the steps are circularly conducted in sequence till water exploration testing of a whole horizontal interval is completed. The construction process is simple, the automation level is high, dynamic sectional packaging is achieved in the variable-flow wellhole, the water exit position is accurately judged, and the water exploration efficiency is improved.
Description
Technical field
The present invention relates to offshore oilfield horizontal well water exploration technology, particularly a kind of offshore oilfield horizontal well water exploration testing arrangement and dynamically separate localization method.
Background technology
Horizontal well technology can increase the contact area of well and oil reservoir, reduces filtrational resistance, improves the whole development effect in oil field.Obtain at home in recent years and widely popularize and apply.At present, the ratio of offshore oilfield horizontal well is more than 12%.Along with increasing horizontal well puts into production, well water problem is more and more outstanding.The most directly harm is that crude output declines, and water-oil separating and sewage disposal system load strengthen.At present, seaborne horizontal well is in completion mode many employings open hole sand control completion, and each interlayer is ganged up mutually, and horizontal wellbore fluid mass variable flow cannot accurately be separated and locate water detection.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, there is provided a kind of simple and reliable for structure, power source is sufficient, travel distance is long, dynamic for ground segregation method is applied to offshore oilfield horizontal well water exploration, and accurately can judge water exit position, improve the water detection testing arrangement of water detection efficiency and dynamically separate localization method.
In order to solve the problems of the technologies described above, the invention provides a kind of offshore oilfield horizontal well water exploration testing arrangement, be made up of device body, described device body comprises and is arranged in tubing string, and the down-hole crawl device contacted with pipe string internal wall, crawl device upper end, described down-hole is connected with lower separation instrument, and described lower separation instrument is connected with moisture tester, and described moisture tester is connected with separation instrument.
The present invention also provides a kind of dynamic separation localization method utilizing above-mentioned water detection testing arrangement, comprises the following steps:
(1) above-mentioned offshore oilfield horizontal well water exploration testing arrangement is prepared, be made up of device body, described device body comprises and is arranged in tubing string, and the down-hole crawl device contacted with pipe string internal wall, crawl device upper end, described down-hole is connected with lower separation instrument, described lower separation instrument is connected with moisture tester, and described moisture tester is connected with separation instrument;
(2) water detection testing arrangement is entered under to the horizontal well section of production;
(3) start down-hole crawl device by ground controller, down-hole crawl device traction water detection testing arrangement is to the horizontal interval of nominative testing;
(4) controlled swollen envelope and the contraction of upper and lower separation instrument by ground controller, complete the interior separation of pipe of any interval of open hole sand control completion;
(5), after treating the locking of upper and lower separation instrument, moisture tester carries out oilwell produced fluid amount and water cut test, record test data, and by data feedback ground;
(6) data obtained are passed through software on ground analog computation pit shaft flow field change, analyze the flowing law judging test zone and water exit position variable mass fluid, location " water exit end ", realizes the accurate water detection of this testing level interval;
(7) after completing the test of one section of horizontal interval, down-hole crawl device traction water detection testing arrangement is to next section of testing level interval, repeat step (4) to step (6), carry out water detection test again, and circulate until complete the water detection test of integral level interval successively;
(8), after water detection has been tested, water detection testing arrangement is tripped out.
The invention has the beneficial effects as follows:
1, the present invention adopts upper and lower separation instrument to realize dynamic segmentation in net horizontal section pipe, and solve horizontal well sand preventing well completion casing programme complicated, each interlayer is ganged up mutually, horizontal wellbore fluid mass variable flow, solves the problem cannot carrying out zonal testing;
2. the present invention separates instrument by the conveying of down-hole crawl device, solve that offshore platform space is little, operating condition is limited, need the demand of small size, large power, solve continuous oil pipe tool string frictional force and pull power, the inaccurate problem of severity control, thus improve water detection operation high efficiency;
3. the present invention carries moisture tester by down-hole crawl device and separates the test data that obtains in horizontal production well cylinder of instrument, by software on ground analog computation flow field change, analyze the flowing law judging test zone and water exit position variable mass fluid, location " water exit end ", solve water exit position location inaccurate, coarse difficulty is tested in water detection.
Accompanying drawing explanation
Fig. 1: water detection testing arrangement structural representation of the present invention.
Accompanying drawing marks: 1, down-hole crawl device; 2, lower separation instrument; 3, moisture tester; 4, upper separation instrument.
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 offshore oilfield horizontal well water exploration testing arrangement, be made up of device body, described device body comprises and is arranged in tubing string, and the down-hole crawl device 1 contacted with pipe string internal wall, crawl device 1 upper end, described down-hole is connected with lower separation instrument 2, and described lower separation instrument 2 is connected with moisture tester 3, and described moisture tester 3 is connected with separation instrument 4.
Utilize water detection testing arrangement of the present invention to carry out dynamically separating the method for location, comprise the following steps:
1, prepare and assemble above-mentioned water detection testing arrangement;
2, water detection testing arrangement is entered under: by water detection testing arrangement G.I.H of the present invention, to conduct oneself with dignity under free lower going-into-well till can not entering down by water detection testing arrangement, then, start down-hole crawl device 1 by ground controller, down-hole crawl device 1 draws water detection testing arrangement to the horizontal interval toe-end of nominative testing;
3, online water detection test: control upper swollen envelope and contraction of separating instrument 4 and lower separation instrument 2 by ground controller, complete the interior separation of pipe of any interval of open hole sand control completion, after treating separation instrument 4 and the locking of lower separation instrument 2, moisture tester 3 carries out oilwell produced fluid amount and water cut test, record test data, and by data feedback ground, to carry out data interpretation;
4, sunykatuib analysis location: the data obtained are passed through software on ground analog computation pit shaft flow field change, analyze judge testing level interval and water exit position about layer of gravel pressure drop-flow, screen casing pressure drop-flow, under enter in instrumentation tube to separate the feature that associates of the situations such as flow field afterwards, locate " water exit end " with this, thus realize the accurate water detection of this testing level interval;
5, segmentation packing water detection: after completing the test of one section of horizontal interval, down-hole crawl device 1 draws water detection testing arrangement to next section of testing level interval, carry out water detection test again by above-mentioned steps, and circulate until complete the water detection test of integral level interval successively;
6, trip out water detection device: after water detection has been tested, instrument 4 and lower separation instrument 2 are separated in gathering, closes moisture tester 3, use cable to trip out water detection testing arrangement.
Claims (2)
1. an offshore oilfield horizontal well water exploration testing arrangement, be made up of device body, it is characterized in that, described device body comprises and is arranged in tubing string, and the down-hole crawl device contacted with pipe string internal wall, crawl device upper end, described down-hole is connected with lower separation instrument, and described lower separation instrument is connected with moisture tester, and described moisture tester is connected with separation instrument.
2. use a dynamic separation localization method for claim 1 offshore oilfield horizontal well water exploration testing arrangement, it is characterized in that, comprise the following steps:
(1) offshore oilfield horizontal well water exploration testing arrangement according to claim 1 is prepared, be made up of device body, described device body comprises and is arranged in tubing string, and the down-hole crawl device contacted with pipe string internal wall, crawl device upper end, described down-hole is connected with lower separation instrument, described lower separation instrument is connected with moisture tester, and described moisture tester is connected with separation instrument;
(2) water detection testing arrangement is entered under to the horizontal well section of production;
(3) start down-hole crawl device by ground controller, down-hole crawl device traction water detection testing arrangement is to the horizontal interval of nominative testing;
(4) controlled swollen envelope and the contraction of upper and lower separation instrument by ground controller, complete the interior separation of pipe of any interval of open hole sand control completion;
(5), after treating the locking of upper and lower separation instrument, moisture tester carries out oilwell produced fluid amount and water cut test, record test data, and by data feedback ground;
(6) data obtained are passed through software on ground analog computation pit shaft flow field change, analyze the flowing law judging test zone and water exit position variable mass fluid, location " water exit end ", realizes the accurate water detection of this testing level interval;
(7) after completing the test of one section of horizontal interval, down-hole crawl device traction water detection testing arrangement is to next section of testing level interval, repeat step (4) to step (6), carry out water detection test again, and circulate until complete the water detection test of integral level interval successively;
(8), after water detection has been tested, water detection testing arrangement is tripped out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510883078.7A CN105484736A (en) | 2015-12-04 | 2015-12-04 | Water exploration testing device for horizontal well in offshore oilfield and dynamic dividing and positioning method of water exploration testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510883078.7A CN105484736A (en) | 2015-12-04 | 2015-12-04 | Water exploration testing device for horizontal well in offshore oilfield and dynamic dividing and positioning method of water exploration testing device |
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| Publication Number | Publication Date |
|---|---|
| CN105484736A true CN105484736A (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510883078.7A Pending CN105484736A (en) | 2015-12-04 | 2015-12-04 | Water exploration testing device for horizontal well in offshore oilfield and dynamic dividing and positioning method of water exploration testing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201900A (en) * | 2017-07-28 | 2017-09-26 | 中国矿业大学 | Slidingtype polymorphic type gas reservoir payzone air water contribution rate measurement apparatus |
| CN110792415A (en) * | 2018-07-17 | 2020-02-14 | 中国石油天然气股份有限公司 | Dynamic monitoring system for horizontal water injection well |
| CN112211586A (en) * | 2020-11-04 | 2021-01-12 | 中国石油天然气股份有限公司 | Electrically controlled self-walking packer for horizontal well |
| CN112943182A (en) * | 2021-01-11 | 2021-06-11 | 中国石油天然气股份有限公司 | Free layer changing device and method for horizontal well |
| CN116733454A (en) * | 2023-08-01 | 2023-09-12 | 西南石油大学 | Intelligent water finding method for horizontal well |
-
2015
- 2015-12-04 CN CN201510883078.7A patent/CN105484736A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201900A (en) * | 2017-07-28 | 2017-09-26 | 中国矿业大学 | Slidingtype polymorphic type gas reservoir payzone air water contribution rate measurement apparatus |
| CN107201900B (en) * | 2017-07-28 | 2020-08-07 | 中国矿业大学 | Sliding type multi-type gas reservoir production layer gas-water contribution rate measuring device |
| CN110792415A (en) * | 2018-07-17 | 2020-02-14 | 中国石油天然气股份有限公司 | Dynamic monitoring system for horizontal water injection well |
| CN112211586A (en) * | 2020-11-04 | 2021-01-12 | 中国石油天然气股份有限公司 | Electrically controlled self-walking packer for horizontal well |
| CN112943182A (en) * | 2021-01-11 | 2021-06-11 | 中国石油天然气股份有限公司 | Free layer changing device and method for horizontal well |
| 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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