CN104234665A - Water exploration string capable of monitoring horizontal-section production flow and water content in horizontal and vertical well sections and operation method of water - Google Patents
Water exploration string capable of monitoring horizontal-section production flow and water content in horizontal and vertical well sections and operation method of water Download PDFInfo
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- CN104234665A CN104234665A CN201310240372.7A CN201310240372A CN104234665A CN 104234665 A CN104234665 A CN 104234665A CN 201310240372 A CN201310240372 A CN 201310240372A CN 104234665 A CN104234665 A CN 104234665A
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Abstract
The invention discloses a water exploration string capable of monitoring horizontal-section production flow and water content in horizontal and vertical well sections and an operation method of water with an aim to improve accuracy of water exploration test in horizontal wells and water exploration efficiency. The water exploration string is connected all levels of connecting units composed of intelligent switches and packers through an oil pipe, each connecting unit corresponds to one layer section, and the intelligent switch on the topmost level is upwardly connected with an underground storage type water monitor, an oil well pump and a sucker rod connected with a pumping unit in the vertical well sections. Acquisition time of the monitor and the intelligent switches are set on the ground, when underground production starts, data of flow and water content and the like of fluid on each layer section are monitored online, recorded and played back through the underground storage type water monitor, and water production sections and water yield can be judged. Online water exploration test is performed through the underground storage type water monitor, so that accuracy in test and water exploration efficiency can be improved, on-site labor intensity can be lowered, and reliable basis can be provided for water control and oil production measures of the horizontal wells.
Description
Technical field
The present invention relates to a kind of in the production of horizontal well straight well section level monitoring section flow, moisture searching pipe column and method of work thereof, belong to oil extraction in oil field technical field.
Background technology
At present, domestic each elephant all to improve reservoir development degree, improve recovery ratio, improve well yield and to reduce cost of winning for core, carries forward vigorously horizontal wells technology.Due to self well track of horizontal well and flooding pattern complicated and changeable, lithology, the physical property of involved each oil reservoir are different with properties of fluid in bearing stratum, the water absorbing capacity of each interval, water-front advance velocity and production fluid situation there are differences, indivedual interval water breakthrough early, water bearing bed position and direction indefinite, each layer production capacity and pressure condition unclear.Current, the water detection technology for above-mentioned situation is still immature, and particularly the low liquid measure horizontal well water exploration technology of low-permeability oil deposit is also in the exploratory development stage, and on-the-spot dynamic conditioning measure, without specific aim, has a strong impact on the development effectiveness of horizontal well.
Existing sectionalized water-exploration testing pipe column of casing well-completion horizontal well adopts intelligent switch device timing controlled and produces each interval one by one, moisture by each section of ground assay, judges water exit interval.The each interval of this technology produces 10 days, and the water detection cycle is long, has a strong impact on produced on-site progress.By inside even from weather, the ground sample of every section of fluid is incomplete, inaccurate, accurately cannot judge water exit position.People's work order amount liquid measure sampling every day every period, send chemical laboratory to analyze, working strength is large.
Summary of the invention
The object of the present invention is to provide a kind of in the production of horizontal well straight well section level monitoring section flow, moisture searching pipe column and method of work thereof, with the accuracy of well water detection test of improving the standard and water detection efficiency.
The concrete technology contents of searching pipe column of the present invention is as follows:
The plug upper end of this tubing string bottom connects intelligent switch device at different levels and packer by oil pipe, the intelligent switch device upper end of most upper level connects the down-hole storage type moisture-content monitoring instrument being positioned at straight well section by oil pipe, down-hole storage type moisture-content monitoring instrument connects oil well pump by oil pipe, oil well pump upper end connected pipes and the sucker rod be located in oil pipe, oil pipe is connected to well head, and sucker rod upper end connects ground oil pumper.
The method of work of this searching pipe column is as follows:
First, by design scheme, at the flow of setting down-hole, ground storage type moisture-content monitoring instrument, the acquisition time of the data such as moisture, and set the acquisition time of each layer intelligent switch device switch, then water detection kit is connected; Then, running string is to precalculated position; Each interval sealed clamping cleat is opened by packer at different levels, oil pumper continuous seepage, realizes the segmentation production one by one of each interval; Around here, straight well section down-hole storage type moisture-content monitoring instrument on-line monitoring, admission the flow of playback each interval fluid, the data such as moisture, judge water exit interval and water yield.
The present invention adopts the down-hole storage type moisture-content monitoring instrument being positioned at straight well section to carry out horizontal multi-section multi-layer flow, moisture on-line monitoring water detection test, the accuracy of well water detection of improving the standard test and water detection efficiency, reduce field labor intensity, for the water-control oil-increasing measure of horizontal well provides reliable basis.
Accompanying drawing explanation
Fig. 1 produces flow, moisture searching pipe column schematic diagram in horizontal well straight well section level monitoring section.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
Searching pipe column for five horizontal pay intervals:
Plug 1 upper end of this tubing string bottom connects I grade of intelligent switch device 3 by oil pipe 2, I grade of intelligent switch device 3 upper end connects I grade of packer 4 by oil pipe 2, I grade of packer 4 upper end connects II grade of intelligent switch device 3 by oil pipe 2, II grade of intelligent switch device 3 upper end connects II grade of packer 4 by oil pipe 2, II grade of packer 4 upper end connects III grade of intelligent switch device 3 by oil pipe 2, III grade of intelligent switch device 3 upper end connects III grade of packer 4 by oil pipe 2, III grade of packer 4 upper end connects IV grade of intelligent switch device 3 by oil pipe 2, IV grade of intelligent switch device 3 upper end connects IV grade of packer 4 by oil pipe 2, IV grade of packer 4 upper end connects V grade of intelligent switch device 3 by oil pipe 2, V grade of intelligent switch device 3 upper end connects the down-hole storage type moisture-content monitoring instrument 5 being positioned at straight well section by oil pipe 2, down-hole storage type moisture-content monitoring instrument 5 connects the oil well pump 6 of bridge type or rod-type by oil pipe 2, oil well pump 6 upper end connected pipes 2 and the sucker rod 7 be located in oil pipe 2, oil pipe 2 is connected to well head, sucker rod 7 upper end connects ground oil pumper 8,
The method of work of this searching pipe column is as follows:
1) by design scheme, ground by second, point and hour in units of set the flow of down-hole storage type moisture-content monitoring instrument 5, the acquisition time of the data such as moisture, in units of sky, set the acquisition time of each interval intelligent switch device 3 switch;
2) catenation principle of water detection kit according to " flow, moisture searching pipe column are produced in the segmentation of straight well section level monitoring section " is connected;
3) this searching pipe column is entered under to precalculated position;
4) each interval sealed clamping cleat is opened by packer 4 at different levels, oil pumper 8 continuous seepage, realizes the segmentation production one by one of each interval; Around here, straight well section down-hole storage type moisture-content monitoring instrument 5 on-line monitoring, admission the flow of playback each interval fluid, the data such as moisture, judge water exit interval and water yield.
Claims (3)
1. produce flow, a moisture searching pipe column in horizontal well straight well section level monitoring section, it is characterized in that:
Plug (1) upper end of this tubing string bottom connects intelligent switch device at different levels and packer by oil pipe (2), intelligent switch device (3) upper end of most upper level connects down-hole storage type moisture-content monitoring instrument (5) being positioned at straight well section by oil pipe (2), down-hole storage type moisture-content monitoring instrument (5) connects oil well pump (6) by oil pipe (2), oil well pump (6) upper end connected pipes (2) and the sucker rod (7) be located in oil pipe (2), oil pipe (2) is connected to well head, sucker rod (7) upper end connects ground oil pumper (8).
2. produce a method of work for flow, moisture searching pipe column in horizontal well straight well section level monitoring section, it is characterized in that:
First, by design scheme, at the flow of setting down-hole, ground storage type moisture-content monitoring instrument, the acquisition time of the data such as moisture, and set the acquisition time of each layer intelligent switch device switch, then water detection kit is connected; Then, running string is to precalculated position; Each interval sealed clamping cleat is opened by packer at different levels, oil pumper continuous seepage, realizes the segmentation production one by one of each interval; Around here, straight well section down-hole storage type moisture-content monitoring instrument on-line monitoring, admission the flow of playback each interval fluid, the data such as moisture, judge water exit interval and water yield.
3. the method for work of flow, moisture searching pipe column is produced as claimed in claim 2 in horizontal well straight well section level monitoring section, it is characterized in that ground by second, point and hour in units of set the flow of down-hole storage type moisture-content monitoring instrument (5), the acquisition time of the data such as moisture, in units of sky, set the acquisition time of each layer intelligent switch device (3) switch, then the catenation principle of water detection kit according to " flow, moisture searching pipe column are produced in the segmentation of straight well section level monitoring section " is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310240372.7A CN104234665A (en) | 2013-06-18 | 2013-06-18 | Water exploration string capable of monitoring horizontal-section production flow and water content in horizontal and vertical well sections and operation method of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310240372.7A CN104234665A (en) | 2013-06-18 | 2013-06-18 | Water exploration string capable of monitoring horizontal-section production flow and water content in horizontal and vertical well sections and operation method of water |
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| Publication Number | Publication Date |
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| CN104234665A true CN104234665A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310240372.7A Pending CN104234665A (en) | 2013-06-18 | 2013-06-18 | Water exploration string capable of monitoring horizontal-section production flow and water content in horizontal and vertical well sections and operation method of water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104481470A (en) * | 2014-12-25 | 2015-04-01 | 中国石油天然气股份有限公司 | Self-adaptive water control string for oil wells and self-adaptive water control method for oil wells |
| CN105114061A (en) * | 2015-08-31 | 2015-12-02 | 中国石油天然气股份有限公司 | String and method for quickly surveying water in horizontal well by multi-parameter combined test without moving string |
| CN107304667A (en) * | 2016-04-21 | 2017-10-31 | 中国石油天然气股份有限公司 | Completion tubular column |
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| CN104481470A (en) * | 2014-12-25 | 2015-04-01 | 中国石油天然气股份有限公司 | Self-adaptive water control string for oil wells and self-adaptive water control method for oil wells |
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| CN107304667A (en) * | 2016-04-21 | 2017-10-31 | 中国石油天然气股份有限公司 | Completion tubular column |
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Application publication date: 20141224 |
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