CN203499681U - Horizontal well repeated sectionalization test process tubing string - Google Patents
Horizontal well repeated sectionalization test process tubing string Download PDFInfo
- Publication number
- CN203499681U CN203499681U CN201320676744.6U CN201320676744U CN203499681U CN 203499681 U CN203499681 U CN 203499681U CN 201320676744 U CN201320676744 U CN 201320676744U CN 203499681 U CN203499681 U CN 203499681U
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- packer
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- horizontal well
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- 238000012360 testing method Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000008569 process Effects 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 76
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 5
- 239000004576 sand Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 238000012856 packing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000011218 segmentation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The utility model relates to a horizontal well repeated sectionalization test process tubing string used in the test process of an oil field horizontal well. One end of a tubing string test mechanism is connected with first tubing, and the other end of the tubing string test mechanism is connected with a first special packer. The first special packer is sequentially connected with a first pressure meter supporting barrel and a normally-closed valve through a tubing coupling. The normally-closed valve is sequentially connected with first hydraulic righting mechanisms, a second special packer and second hydraulic righting mechanisms. The second hydraulic righting mechanisms are sequentially connected with a second pressure meter supporting barrel, a check valve and a universal mechanism through a tubing coupling. The universal mechanism is sequentially connected with a next set of third hydraulic righting mechanisms 11, a third special packer and third hydraulic righting mechanisms 13. The third hydraulic righting mechanisms 13 are sequentially connected with a setting mechanism and a third pressure meter supporting barrel. By the adoption of the process tubing string, horizontal well repeated sectionalization test can be conducted, forced drainage to acquire yield can be achieved in the test process, production requirements are met, and the requirement for oil field low porosity and low permeability reservoir exploitation is met.
Description
Technical field
The utility model relates to a kind of process pipe string used in oilfield horizontal well test process, a kind of one-trip string can be realized segmentation to target zone and repeatedly tests specifically, and in test process, by gaslift or pumping, reaches forced-ventilated and ask and produce repeatedly sectionalization test process pipe string of the horizontal well that requires.
Background technology
Quickening gradually along with oil field prospecting progress, low porosity and low permeability reservoir comes into one's own gradually, horizontal well technique is one of important means improving this type of reservoir single well productivity, but horizontal well is owing to being subject to the restriction of existing formation testing technique, can't carry out repeatedly sectionalization test for a certain section at present, cannot directly try to achieve the related property such as output, temperature of individual layer production fluid.From shortening construction period, protect reservoir to avoid secondary pollution, improving the object that reservoir is familiar with; be necessary to provide to form and a set ofly perfect can carry out horizontal well and repeatedly in sectionalization test, test process, can realize the operating tool string that meets production requirement that forced-ventilated is asked product; can instruct oil field development; for horizontal well drilling schematic design, reserves are submitted in exploration and subsequent development scheme provides scientific basis, meet the needs of oil field low porosity and low permeability reservoirs exploration.
Utility model content
In order to address the above problem, the utility model provides repeatedly sectionalization test process pipe string of a kind of horizontal well.This process pipe string can carry out horizontal well repeatedly can realize the production requirement that meets that forced-ventilated is asked product in sectionalization test, test process, meets the needs of oil field low porosity and low permeability reservoir exploitation.
The technical solution of the utility model is: a kind of horizontal well is sectionalization test process pipe string repeatedly, comprise mechanism for testing, normally close valve, ball-and-seat, omnidirectional mechanism, setting mechanism and some Special packers, manometer and hydraulic centralizing mechanism, wherein, described mechanism for testing one end is connected with oil pipe, the other end connects Special packer one, described Special packer one is by tubing coupling successively Bonding pressure meter holder cylinder one and normally close valve, described normally close valve connects hydraulic pressure righting mechanism one successively, Special packer Er Ji hydraulic centralizing mechanism two, and described hydraulic centralizing mechanism two is again by tubing coupling successively Bonding pressure meter holder cylinder two, ball-and-seat and omnidirectional mechanism, and described omnidirectional mechanism connects next group hydraulic centralizing mechanism three successively, Special packer San Ji hydraulic centralizing mechanism three, described pressure righting mechanism three is Connection Block sealing mechanism and manometer three successively.
The beneficial effects of the utility model are: this process pipe string pressurizes by oil pipe, Special packer sealing, reach and separate target zone III, IV, V, test finishes rear upper lifting pipe post removing seal for packer, and tubing string is carried to precalculated position, the construction of repetition top, can realize the object of testing construction for horizontal well section, with strong points to target zone understanding, realize one-trip string and can complete segmentation multi-layer testing and row simultaneously and ask and produce construction, reduced operating cost, safety, reliable; ; Test period can utilize the methods such as gaslift or pumping to realize the object that forced-ventilated is asked product, and the secondary pollution of having avoided fracturing fluid to cause stratum realizes test and the row's of returning overall process down-hole pressure monitoring, and the data of asking for is more true, reliable; Once there is sand card, can open normally close valve or setting mechanism, carry out sand washing operation; Packer in this tubing string adopts hydraulic base sealed, and to the zonal testing of horizontal well reservoir, pressurization sets, and above carries deblocking, can realize repeatedly restting.After hydraulic setting, also can realize locking, avoid occurring because pressure is excessive, causing deblocking phenomenon, hold hydraulic pressure while pressing two-stage balanced piston is produced to active force upwards, can load by balance deblocking, stop lower rubber cylinder seat descending, packing element keeps sealing state.Hold to press down while pressing down packing element is applied to active force upwards, with to set direction identical, the active force of lower rubber cylinder seat is equated up and down, packer keeps sealing state setting convenient and reliable, can meet the requirement of one-trip string segmentation multi-layer testing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-mechanism for testing in figure, 2-Special packer one, 3-manometer one, 4-normally close valve, 5-hydraulic centralizing mechanism one, 6-Special packer two, 7-hydraulic centralizing mechanism two, 8-manometer two, 9-ball-and-seat, 10-omnidirectional mechanism, 11-hydraulic centralizing mechanism three, 12-Special packer three, 13-hydraulic centralizing mechanism four, the setting mechanism of 14-, 15-manometer three, I-oil pipe.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
As shown in Figure 1, this horizontal well is sectionalization test process pipe string repeatedly, comprise mechanism for testing 1, normally close valve 4, ball-and-seat 9, omnidirectional mechanism 10, setting mechanism 14 and some Special packers, manometer and hydraulic centralizing mechanism, wherein, described mechanism for testing 1 one end is connected with oil pipe I, the other end connects Special packer 1, described Special packer 1 is by tubing coupling successively Bonding pressure meter holder cylinder 1 and normally close valve 4, described normally close valve 4 connects hydraulic pressure righting mechanism 1 successively, Special packer 26 and hydraulic centralizing mechanism 27, and described hydraulic centralizing mechanism 27 is again by tubing coupling successively Bonding pressure meter holder cylinder 28, ball-and-seat 9 and omnidirectional mechanism 10, and described omnidirectional mechanism 10 connects next group hydraulic centralizing mechanism 3 11 successively, Special packer San12Ji hydraulic centralizing mechanism 3 13, described pressure righting mechanism 3 13 is Connection Block sealing mechanism 14 and manometer 3 15 successively.
In said structure, Special packer (2,6,12) can be realized repeatedly setting, deblocking; Mechanism for testing 1 can guarantee that test period realizes underground switch well, records strata pressure and changes; Special packer 1 can be separated all layers of opening with annular space, not only can guarantee that carrying out gas lift liquid drainage can also guarantee well control safety, can realize and repeatedly repeat setting, deblocking; The pressure that manometer 1 can be monitored test layer upper layer (III) changes; Normally close valve 4 is opened and is carried out kill-job or sand washing operation by special tool when needs kill-job or the sand washing of sand card; Hydraulic centralizing mechanism (5,7,11), guaranteed that packing element is placed in the middle, and then guarantees setting effect because pressure-acting carries out righting to packer in packer setting moment; Special packer (6,12) can be separated test layer (IV) and upper layer (III), lower layer (V); Manometer 8 monitoring test layer pressure change; A part of transmission of pressure that ball-and-seat 9 can lead in threeway in oil pipe pressurizes setting process, completes packer setting.Ball-and-seat 9 guarantees that fluid under pressures do not enter stratum, setting after because strata pressure is greater than tubing pressure, stratum production fluid enters oil pipe by ball-and-seat; Omnidirectional mechanism 10 plays guide effect in tubing string is gone into the well process; Special packer 12 can be separated test layer (IV) and lower layer (V); Base sealed packer effect can be played by setting mechanism 14; Manometer 15 can be monitored lower layer (V) pressure and be changed.Utilize this tubing string to realize can repeatedly to the single target zone of difference, to carry out segmentation and repeatedly test, can understand fully this section of output and relevant fluidity, in test process, can realize the production requirement that meets that forced-ventilated is asked product, meet the needs of oil field low porosity and low permeability reservoir exploitation.
Specific implementation process is as follows: according to structure shown in Fig. 1, this test string is sealed in to well, under test string, arrive after predetermined well section, injecting socket sealing liquid body from oil pipe I, oil pipe pressurization, by 14 pressurizations of setting mechanism, realize Special packer 1, Special packer 26, Special packer 3 12 is setting, hydraulic centralizing mechanism 1 in setting process, hydraulic centralizing mechanism 27, hydraulic centralizing mechanism 3 11, hydraulic centralizing mechanism 4 13 is because pressure-acting can guarantee that packing element is placed in the middle, guarantee packing effect, ball-and-seat 9 makes a part of leading to transmit setting pressure in oil pipe pressurizes setting process, completing Special packer sets.Ball-and-seat 9 guarantees that fluid under pressure does not enter stratum, the pressure release of setting back seat sealing liquid, packer is because self-locking mechanism still guarantees sealing, hydraulic centralizing mechanism 1, hydraulic centralizing mechanism 27, hydraulic centralizing mechanism 3 11, hydraulic centralizing mechanism 4 13 are because pressure release recovers initial position, then by mechanism for testing, carry out the examination of switch well surveying, after ball-and-seat 9 is setting, because strata pressure is greater than tubing pressure, stratum production fluid enters oil pipe by ball-and-seat 9, and test period can carry out gaslift or pumping discharge opeing; Test period packer 2 can separate with annular space opening layer, and the pressure that manometer one can be monitored test layer upper layer III changes, and Special packer 26 and Special packer 3 12 are separated test layer IV and upper layer III, lower layer V; The pressure of manometer 28 monitoring test layer IV changes, Special packer 3 12 can separate test layer IV and lower layer V is separated, and the pressure that manometer 15 can be monitored lower layer V changes, once there is sand card, pressurizes and opens setting mechanism, oil jacket is communicated with, and carries out sand washing operation.One deck construction finishes rear oil pipe pressurization removing seal for packer, and tubing string is carried to another precalculated position, repeats the construction of above-mentioned portion, and new layer is tested.On this test string, carry in process, if desired kill job or sand washing operation are opened normally close valve 4 by special tool and are carried out kill-job or sand washing operation.
Claims (1)
1. horizontal well sectionalization test process pipe string repeatedly, comprise mechanism for testing (1), normally close valve (4), ball-and-seat (9), omnidirectional mechanism (10), setting mechanism (14) and some Special packers, manometer and hydraulic centralizing mechanism, it is characterized in that: described mechanism for testing (1) one end is connected with oil pipe (I), the other end connects Special packer one (2), described Special packer one (2) is by tubing coupling successively Bonding pressure meter holder cylinder one (3) and normally close valve (4), described normally close valve (4) connects hydraulic pressure righting mechanism one (5) successively, Special packer two (6) and hydraulic centralizing mechanism two (7), and described hydraulic centralizing mechanism two (7) is again by tubing coupling successively Bonding pressure meter holder cylinder two (8), ball-and-seat (9) and omnidirectional mechanism (10), and described omnidirectional mechanism (10) connects next group hydraulic centralizing mechanism three (11) successively, Special packer three (12) and hydraulic centralizing mechanism three (13), described pressure righting mechanism three (13) is Connection Block sealing mechanism (14) and manometer three (15) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676744.6U CN203499681U (en) | 2013-10-30 | 2013-10-30 | Horizontal well repeated sectionalization test process tubing string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320676744.6U CN203499681U (en) | 2013-10-30 | 2013-10-30 | Horizontal well repeated sectionalization test process tubing string |
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| Publication Number | Publication Date |
|---|---|
| CN203499681U true CN203499681U (en) | 2014-03-26 |
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| CN201320676744.6U Expired - Lifetime CN203499681U (en) | 2013-10-30 | 2013-10-30 | Horizontal well repeated sectionalization test process tubing string |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443056A (en) * | 2014-08-27 | 2016-03-30 | 中国石油天然气股份有限公司 | Separated injection method for water injection well |
| CN105626022A (en) * | 2014-11-05 | 2016-06-01 | 中国石油化工股份有限公司 | Tubular column device used for oil-gas well and method used for finding production volume of oil-gas well |
-
2013
- 2013-10-30 CN CN201320676744.6U patent/CN203499681U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443056A (en) * | 2014-08-27 | 2016-03-30 | 中国石油天然气股份有限公司 | Separated injection method for water injection well |
| CN105626022A (en) * | 2014-11-05 | 2016-06-01 | 中国石油化工股份有限公司 | Tubular column device used for oil-gas well and method used for finding production volume of oil-gas well |
| CN105626022B (en) * | 2014-11-05 | 2018-09-25 | 中国石油化工股份有限公司 | Oil/gas well tubular column unit and the method for asking production for carrying out oil/gas well |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20140326 |
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| CX01 | Expiry of patent term |