CN104420836A - Horizontal Well Segmented Setting Wellhead Flow Method for Finding Water String and Its Water Finding Method - Google Patents
Horizontal Well Segmented Setting Wellhead Flow Method for Finding Water String and Its Water Finding Method Download PDFInfo
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- CN104420836A CN104420836A CN201310388614.7A CN201310388614A CN104420836A CN 104420836 A CN104420836 A CN 104420836A CN 201310388614 A CN201310388614 A CN 201310388614A CN 104420836 A CN104420836 A CN 104420836A
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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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
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- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
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Abstract
The invention discloses a water exploration pipe column of a horizontal well sectional setting type wellhead flow method and a water exploration method thereof, which are designed for providing reliable basis for water control and oil increasing measures of the horizontal well. The horizontal section of the water exploration pipe column in the well is connected with a guide plug, a tail pipe, a K344 hydraulic packer and an oil pipe from a toe part to a heel part, the oil pipe is connected with an oil pipe cock at a well head, and a well head sleeve is communicated with a ground single-quantity device. The water finding pipe column carries out water finding through the processes of running in a construction process pipe column, producing a combined layer, setting a setting device, finding water in sections and pulling out the process pipe column. The method determines the water-producing interval according to the wellhead water production amount and the water-containing change condition, if the wellhead water production amount suddenly decreases or water does not flow out, the water-producing interval is found, if the wellhead water production amount does not change, the water-discharging point is shown to be above the perforation section, the pipe column is lifted to the upper part of the upper perforation section, and production is carried out again until the water-finding water-producing interval is found. The invention can realize the water detection of the high-water-content self-spraying (casing-returning) horizontal well test, and has short water detection period and simple construction process.
Description
Technical field
The present invention relates to a kind of horizontal well in segments setting type well head discharge method searching pipe column and groundwater prospecting method thereof, belong to oil extraction in oil field technical field.
Background technology
At present, sectionalized water-exploration testing pipe column of casing well-completion horizontal well adopts each interval of intelligent switch device timing controlled to produce, chemically examined by ground and analyze each section moisture, judge water layer.The each interval of this technique is separated by cup packer or Y441 packer.But because part High water cut horizontal well is often linked up with corresponding water injection well channelling, High water cut horizontal well well head blowing (cover returns), makes cup packer to enter down, Y441 Bidirectional anchor packer horizontal segment deblocking difficulty, and complicated construction technique.
Summary of the invention
The object of the present invention is to provide a kind of horizontal well in segments setting type well head discharge method searching pipe column and groundwater prospecting method thereof, for the water-control oil-increasing measure of horizontal well provides reliable foundation.
Concrete technology contents of the present invention is as follows:
This searching pipe column is connected with guiding plug, tail pipe, K344 hydraulic packer and oil pipe in down-hole horizontal section from toe to heel, and oil pipe is in the cock of well head connected pipes, and device is singly measured in wellhead casing pipe connection ground.
Enter construction technology tubing string under this searching pipe column passes through, close that layer is produced, set packer sets, segmentation water detection and the technique that trips out process pipe string carries out water detection.
The present invention can realize High water cut blowing (cover returns) horizontal well test water detection, and construction technology is simple, and water detection is rapid, and the water detection cycle is short.
Accompanying drawing explanation
Fig. 1 is horizontal well in segments setting type well head discharge method searching pipe column structural representation.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
This searching pipe column is connected with guiding plug 1, tail pipe 2, K344 hydraulic packer 3 and oil pipe 4 in down-hole horizontal section from toe to heel, and oil pipe 4 is in well head connected pipes cock 5, and wellhead casing pipe connects ground single amount device 6.
The concrete steps of this searching pipe column groundwater prospecting method are as follows:
1) enter construction technology tubing string under: combine G.I.H after this searching pipe column, close oil pipe cock 5, by K344 packer 3 times to precalculated position, card is enclosed between first paragraph and second segment, to guarantee that returning fluid flows out from sleeve pipe.
2) close layer to produce: continue to keep oil pipe cock 5 to close, annular space connects production procedure, produces 2-3 days, the Production development data such as admission Liquid output, moisture and saliferous, to analyze with later stage water detection dynamic contrast under same production procedure.
3) set: close after adopting end, open oil pipe cock 5, with cementing truck to water filling pressurization in oil pipe 4; Namely slowly pressure is played, voltage stabilizing 5 minutes when reaching 5MPa; When pressure reaches 10MPa, voltage stabilizing 5 minutes, has set.Close oil pipe cock 5, voltage stabilizing, observe oil pipe 4 pressure condition, maintenance oil pipe 4 pressure can not lower than 8MPa simultaneously, and setting pressure will determine according to sleeve pipe maximum pressure during wellhead shut-in.
4) segmentation water detection: single to oil jacket annular space and ground device 6 of measure is connected and produces, enrolls Liquid output, moisture and saliferous data, with dynamic contrast analysis ecological before water detection, judge whether K344 packer less than 3 perforated interval is water exit interval.If well head aquifer yield bust or not water outlet, show that this perforated interval is water exit interval, water detection terminates; If well head aquifer yield cannot change, indicate that water spot is on this perforated interval.Open oil pipe cock 5, pressure release deblocking K344 packer 3, above the supreme perforated interval of upper lifting pipe post, again set K344 packer 3, carry out annular space production, until well head aquifer yield bust or not water outlet, find out water exit interval.
5) trip out searching pipe column: trip out test string, open oil pipe cock 5, oil pipe 4 pressure release, deblocking K344 packing 3, upper lifting pipe post.
Claims (3)
1. a horizontal well in segments setting type well head discharge method searching pipe column, is characterized in that:
This searching pipe column is connected with guiding plug (1), tail pipe (2), K344 hydraulic packer (3) and oil pipe (4) in down-hole horizontal section from toe to heel, oil pipe (4) is in well head connected pipes cock (5), and device (6) is singly measured on wellhead casing pipe connection ground.
2. a groundwater prospecting method for horizontal well in segments setting type well head discharge method searching pipe column, is characterized in that entering under it passes through construction technology tubing string, closes that layer is produced, set packer sets, segmentation water detection and the technique that trips out process pipe string carries out water detection.
3. the groundwater prospecting method of horizontal well in segments setting type well head discharge method searching pipe column according to claim 2, is characterized in that its concrete water detection step is as follows:
1) construction technology tubing string is entered under: combine G.I.H after this searching pipe column, close oil pipe cock (5), arrive precalculated position by under K344 packer (3), card is enclosed between first paragraph and second segment, to guarantee that returning fluid flows out from sleeve pipe;
2) close layer to produce: continue to keep oil pipe cock (5) to close, annular space connects production procedure, produces 2-3 days, and the Production development data such as admission Liquid output, moisture and saliferous, to analyze with later stage water detection dynamic contrast under same production procedure;
3) set: close after adopting end and open oil pipe cock (5), with cementing truck to the interior water filling pressurization of oil pipe (4); Namely slowly pressure is played, voltage stabilizing five minutes when reaching 5MPa; When pressure reaches 10MPa, voltage stabilizing five minutes, has set; Close oil pipe cock (5), voltage stabilizing, observe oil pipe (4) pressure condition, keep oil pipe (4) pressure can not lower than 8MPa simultaneously, setting pressure will determine according to sleeve pipe maximum pressure during wellhead shut-in;
4) segmentation water detection: oil jacket annular space and ground are singly measured device (6) and be connected and produce, admission Liquid output, moisture and saliferous data, with dynamic contrast analysis ecological before water detection, judge whether K344 packer (3) below perforated interval is water exit interval; If well head aquifer yield bust or not water outlet, show that this perforated interval is water exit interval, water detection terminates.If well head aquifer yield cannot change, indicate that water spot is on this perforated interval; Open oil pipe cock (5), pressure release deblocking K344 packer (3), above the supreme perforated interval of upper lifting pipe post, again K344 packer (3) is set, carry out annular space production, until well head aquifer yield bust or not water outlet, find out water exit interval;
5) trip out searching pipe column: trip out test string, open oil pipe cock (5), oil pipe (4) pressure release, deblocking K344 packing (3), upper lifting pipe post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388614.7A CN104420836B (en) | 2013-08-30 | 2013-08-30 | Horizontal Well Segmented Setting Wellhead Flow Method for Finding Water String and Its Water Finding Method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310388614.7A CN104420836B (en) | 2013-08-30 | 2013-08-30 | Horizontal Well Segmented Setting Wellhead Flow Method for Finding Water String and Its Water Finding Method |
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| Publication Number | Publication Date |
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| CN104420836A true CN104420836A (en) | 2015-03-18 |
| CN104420836B CN104420836B (en) | 2017-09-01 |
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| CN201310388614.7A Active CN104420836B (en) | 2013-08-30 | 2013-08-30 | Horizontal Well Segmented Setting Wellhead Flow Method for Finding Water String and Its Water Finding Method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339096A (en) * | 2017-07-28 | 2017-11-10 | 中国石油天然气股份有限公司 | A method for quickly finding water in horizontal wells |
| CN111502616A (en) * | 2019-01-30 | 2020-08-07 | 中国石油天然气股份有限公司 | Method, device and storage medium for determining water injection parameters |
| CN111577257A (en) * | 2020-06-19 | 2020-08-25 | 陕西捷奥能源科技有限公司 | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof |
| CN113882832A (en) * | 2020-07-03 | 2022-01-04 | 中国石油天然气股份有限公司 | Multistage hydraulic control water exploration switch and multistage repeated layering water exploration pipe column |
| CN119878131A (en) * | 2023-10-25 | 2025-04-25 | 中国石油天然气股份有限公司 | Water finding method for horizontal well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339096A (en) * | 2017-07-28 | 2017-11-10 | 中国石油天然气股份有限公司 | A method for quickly finding water in horizontal wells |
| CN111502616A (en) * | 2019-01-30 | 2020-08-07 | 中国石油天然气股份有限公司 | Method, device and storage medium for determining water injection parameters |
| CN111577257A (en) * | 2020-06-19 | 2020-08-25 | 陕西捷奥能源科技有限公司 | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof |
| CN111577257B (en) * | 2020-06-19 | 2023-03-28 | 陕西捷奥能源科技有限公司 | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof |
| CN113882832A (en) * | 2020-07-03 | 2022-01-04 | 中国石油天然气股份有限公司 | Multistage hydraulic control water exploration switch and multistage repeated layering water exploration pipe column |
| CN113882832B (en) * | 2020-07-03 | 2023-08-22 | 中国石油天然气股份有限公司 | Multistage hydraulically-controlled water-finding switch and multistage repeatedly layered water-finding pipe column |
| CN119878131A (en) * | 2023-10-25 | 2025-04-25 | 中国石油天然气股份有限公司 | Water finding method for horizontal well |
| CN119878131B (en) * | 2023-10-25 | 2025-11-21 | 中国石油天然气股份有限公司 | Water finding method for horizontal well |
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| CN104420836B (en) | 2017-09-01 |
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