CN203230415U - Subsection simultaneous sampling and water exploration pipe column of multi-section fracturing horizontal well - Google Patents
Subsection simultaneous sampling and water exploration pipe column of multi-section fracturing horizontal well Download PDFInfo
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- CN203230415U CN203230415U CN 201320162781 CN201320162781U CN203230415U CN 203230415 U CN203230415 U CN 203230415U CN 201320162781 CN201320162781 CN 201320162781 CN 201320162781 U CN201320162781 U CN 201320162781U CN 203230415 U CN203230415 U CN 203230415U
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Abstract
The utility model discloses a subsection simultaneous sampling and water exploration pipe column of a multi-section fracturing horizontal well and aims at simultaneous fast sampling and water exploration of subsections of all sections of one pipe column of the horizontal well. The pipe column is arranged between a pipe plug and an oil-well pump and is connected with multiple stages of connection units composed of underground sampling switchgear and packers through oil pipes, and the underground sampling switchgear and the packer of each stage correspond to one section respectively. The upper end of the underground sampling switchgear at the top stage is connected with the oil-well pump through an oil pipe, the upper end of the oil-well pump is connected with a sucker rod arranged in the oil pipe, the oil pipe is connected onto a wellhead, and the sucker rod is connected with a ground pumping unit. The pipe column is provided with the multi-stage underground sampling switchgears so that simultaneous sampling and water exploration testing of all the subsections of the multiple sections of one pipe column can be achieved, the original one-by-one water exploration of the sections is transformed to simultaneous production, sampling and water exploration, the water exploration testing period can be greatly shortened, the water outflow sections can be defined, the water exploration testing efficiency is improved, and reliable basis is supplied to water control and oil increasing measures of the horizontal well.
Description
Technical field
The utility model relates to a kind of multistage pressure break horizontal well in segments searching pipe column of taking a sample simultaneously, belongs to oil recovery technique field, oil field.
Background technology
At present, domestic each elephant is core to improve the reservoir development degree, to improve recovery ratio, improve well yield and reduce cost of winning, carries forward vigorously the horizontal wells technology.Because well track and the flooding pattern of horizontal well are complicated and changeable, each oil reservoir lithology, rerum natura are different with properties of fluid in bearing stratum, make water absorbing capacity, water-front advance velocity and the production fluid situation etc. of each interval there are differences, cause indivedual interval water breakthroughs early, water bearing bed position and direction are indeterminate, and each layer production capacity and pressure condition are unclear.At present, that is that all right is ripe for horizontal well water detection technology, and particularly the water detection technology of the low liquid measure horizontal well of low-permeability oil deposit also is in the exploratory development stage, causes on-the-spot dynamically adjustment measure not have specific aim, has a strong impact on the horizontal well development effect.Existing cased hole completion horizontal well in segments water detection test string adopts the intelligent switch device that each interval is carried out timing controlled, produce each interval one by one, moisture by ground each section of assay, judge water exit interval, all to independently produce 10 days for every section, the water detection cycle is oversize, has a strong impact on the produced on-site progress, the water detection demand of many bunches long horizontal segment horizontal wells of incompatibility segmentation.
Summary of the invention
The purpose of this utility model is to provide a kind of multistage pressure break horizontal well in segments searching pipe column of taking a sample simultaneously, and it can realize that each the interval segmentation of one-trip string horizontal well takes a sample and quick water detection simultaneously, for the water-control oil-increasing measure of horizontal well provides reliable basis.
Concrete technology contents of the present utility model is as follows:
The multistage pressure break horizontal well in segments searching pipe column of taking a sample simultaneously:
This tubing string connects the multistage linkage unit of forming with well sampling derailing switch and packer by oil pipe between plug and oil well pump, each corresponding interval of every grade well sampling derailing switch and packer.The most top well sampling derailing switch upper end connects oil well pump by oil pipe, and the oil well pump upper end connects the sucker rod that is located in the oil pipe, and oil pipe is connected to well head, and sucker rod connects the ground oil pumper.
Compared with the prior art the utility model has following advantage:
This tubing string adopts multistage well sampling derailing switch, the segmentation that can realize the one-trip string multi-section multi-layer water detection test of taking a sample simultaneously, with each original interval one by one production water detection change into simultaneously and to produce sampling water detection, can significantly shorten water detection test period, clear and definite water exit interval, improve water detection testing efficiency height, for the water-control oil-increasing measure of horizontal well provides reliable foundation.
Description of drawings
Fig. 1 is the multistage pressure break horizontal well in segments searching pipe column schematic diagram of taking a sample simultaneously.
The specific embodiment
Embodiment:
With reference to Fig. 1 embodiment of the present utility model is further specified:
Be example with the pressure break horizontal well of five pay intervals searching pipe column of taking a sample simultaneously:
Plug 1 upper end of this tubing string connects I level well sampling derailing switch 3 by oil pipe 2, I level well sampling derailing switch 3 upper ends connect I level packer 4 by oil pipe 2, I level packer 4 upper ends connect II level well sampling derailing switch 5 by oil pipe 2, II level well sampling derailing switch 5 upper ends connect II level packer 6 by oil pipe 2, II level packer 6 upper ends connect III level well sampling derailing switch 7 by oil pipe 2, III level well sampling derailing switch 7 upper ends connect III level packer 8 by oil pipe 2, III level packer 8 upper ends connect IV level well sampling derailing switch 9 by oil pipe 2, IV level well sampling derailing switch 9 connects IV level packer 10 by oil pipe 2, IV level packer 10 upper ends connect V level well sampling derailing switch 11 by oil pipe 2, V level well sampling derailing switch 11 upper ends connect the oil well pump 12 of gap bridge or rod-type by oil pipe 2, oil well pump 12 upper ends connect oil pipe 2 and the sucker rod 13 that is located in the oil pipe 2, oil pipe 2 is connected to well head, and sucker rod 13 connects ground oil pumper 14.Altogether corresponding five intervals of the well sampling derailing switch of this tubing string Pyatyi and packer.
The sampling groundwater prospecting method is as follows in the time of this tubing string:
At first, by design scheme, be that chronomere sets the acquisition time that well sampling derailing switches at different levels cut out sampling simultaneously on ground with the fate, again the catenation principle of water detection kit according to " segmentation take a sample simultaneously searching pipe column " connected.Then, down to the precalculated position, packers at different levels are opened each interval sealed clamping cleat with tubing string, and the ground oil pumper is produced continuously.Treat in the pit shaft in early stage that after the emptying of operation fluid, well sampling derailing switches at different levels regularly cut out, the segmentation of carrying out each interval fluid is produced simultaneously and is taken a sample.After sampling was finished, last lift pipe string was collected each layer fluid in the well sampling derailing switches at different levels.By assay, obtain the moisture data of each section, accurately judge water exit interval.
Be example with the experimental data of 5 sections level of production wells flatly, adopt the prior art tubing string, early stage, discharge opeing was 10 days, and each interval independently was produced 10 days, 5 sections 50 days, altogether need 60 days.And discharge opeing in the technology of this tubing string early stage 10 days, each interval is produced after 6 days segmentation simultaneously and is taken a sample simultaneously, and amounting to needs 16 days.
Claims (2)
1. multistage pressure break horizontal well in segments searching pipe column of taking a sample simultaneously is characterized in that:
Between plug (1) and oil well pump (12), connect the multistage linkage unit of forming with well sampling derailing switch and packer by oil pipe (2), each corresponding interval of every grade well sampling derailing switch and packer; The most top well sampling derailing switch upper end connects oil well pump (12) by oil pipe (2), and oil well pump (12) upper end connects the sucker rod (13) that is located in the oil pipe (2), and oil pipe (2) is connected to well head, and sucker rod (13) connects ground oil pumper (14).
2. the multistage pressure break horizontal well in segments according to claim 1 searching pipe column of taking a sample simultaneously is characterized in that:
The plug of this tubing string (1) upper end connects I level well sampling derailing switch (3) by oil pipe (2), I level well sampling derailing switch (3) upper end connects I level packer (4) by oil pipe (2), I level packer (4) upper end connects II level well sampling derailing switch (5) by oil pipe (2), II level well sampling derailing switch (5) upper end connects II level packer (6) by oil pipe (2), II level packer (6) upper end connects III level well sampling derailing switch (7) by oil pipe (2), III level well sampling derailing switch (7) upper end connects III level packer (8) by oil pipe (2), III level packer (8) upper end connects IV level well sampling derailing switch (9) by oil pipe (2), IV level well sampling derailing switch (9) connects IV level packer (10) by oil pipe (2), IV level packer (10) upper end connects V level well sampling derailing switch (11) by oil pipe (2), V level well sampling derailing switch (11) upper end connects the oil well pump (12) of gap bridge or rod-type by oil pipe (2), oil well pump (12) upper end connects oil pipe (2) and is located at the interior sucker rod (13) of oil pipe (2), oil pipe (2) is connected to well head, and sucker rod (13) connects ground oil pumper (14);
The oil well pump of this tubing string (12) and sucker rod (13) are positioned at the down-hole vertical section, and the plug of this tubing string (1) is positioned at the down-hole horizontal section to V level well sampling derailing switch (11), altogether corresponding five intervals of the Pyatyi well sampling derailing switch of this tubing string and packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162781 CN203230415U (en) | 2013-04-03 | 2013-04-03 | Subsection simultaneous sampling and water exploration pipe column of multi-section fracturing horizontal well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162781 CN203230415U (en) | 2013-04-03 | 2013-04-03 | Subsection simultaneous sampling and water exploration pipe column of multi-section fracturing horizontal well |
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| CN203230415U true CN203230415U (en) | 2013-10-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100234A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Sectional synchronous sampling and water exploration tubular column of multi-section fracturing horizontal well and working method thereof |
| CN104481527A (en) * | 2014-12-05 | 2015-04-01 | 中国石油天然气股份有限公司 | Method for controlling downhole sectional sampling of horizontal well |
| WO2015074243A1 (en) * | 2013-11-22 | 2015-05-28 | 中国石油天然气股份有限公司 | Intelligent test system and method for multi-segment fractured horizontal well |
-
2013
- 2013-04-03 CN CN 201320162781 patent/CN203230415U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100234A (en) * | 2013-04-03 | 2014-10-15 | 中国石油天然气股份有限公司 | Sectional synchronous sampling and water exploration tubular column of multi-section fracturing horizontal well and working method thereof |
| CN104100234B (en) * | 2013-04-03 | 2016-12-28 | 中国石油天然气股份有限公司 | Multistage pressure break horizontal well in segments samples searching pipe column and method of work thereof simultaneously |
| WO2015074243A1 (en) * | 2013-11-22 | 2015-05-28 | 中国石油天然气股份有限公司 | Intelligent test system and method for multi-segment fractured horizontal well |
| US9605531B2 (en) | 2013-11-22 | 2017-03-28 | Petrochina Company Limited | Intelligent test system and method for multi-segment fractured horizontal well |
| CN104481527A (en) * | 2014-12-05 | 2015-04-01 | 中国石油天然气股份有限公司 | Method for controlling downhole sectional sampling of horizontal well |
| CN104481527B (en) * | 2014-12-05 | 2017-11-07 | 中国石油天然气股份有限公司 | Sectional sampling control method under a kind of Horizontal Well |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 |