CN102943650B - A kind of Multilateral Wells divides the instrument of adopting and construction technology thereof - Google Patents
A kind of Multilateral Wells divides the instrument of adopting and construction technology thereof Download PDFInfo
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- CN102943650B CN102943650B CN201210382695.5A CN201210382695A CN102943650B CN 102943650 B CN102943650 B CN 102943650B CN 201210382695 A CN201210382695 A CN 201210382695A CN 102943650 B CN102943650 B CN 102943650B
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Abstract
The present invention relates to a kind of oil field Multilateral Wells technical field, particularly a kind of Multilateral Wells divides the instrument of adopting and construction technology thereof.This Multilateral Wells divides the instrument of adopting to comprise conjunction to adopt joint; Conjunction is adopted upper end of joint and is connected main wellhead packer, and lower end connects orienting cover, closes to adopt in the middle of joint to have holes.Use Multilateral Wells to divide the construction technology of the instrument of adopting, this processing step is as follows: salvagable two way seal packer is entered down two branch well hole design attitudes respectively, and packer, except energy packing bidirectionally stressor layer, also has endoporus sealing function; Conjunction is adopted upper end of joint and is connected main wellhead packer, and lower end connects orienting cover, enters in main borehole under joint is adopted in the conjunction being connected with sealed joint pipe and insertion sealed tube I.Present invention achieves the selective exploitation of Multilateral Wells, improve oil well output, effective packing branch well window, prevents from losing efficacy due to the pressure packing of window place the problems such as the formation water output caused.
Description
Technical field:
The present invention relates to a kind of oil field Multilateral Wells technical field, particularly a kind of Multilateral Wells divides the instrument of adopting and construction technology thereof.
Background technology:
Branch well window is the interface channel of branch well hole and main borehole, and branch well hole is communicated with at window place with main borehole, and Multilateral Wells usually adopts two branch well holes to close the mode of adopting and produces; When two Multilateral Wells exploitation different pressures oil-gas reservoir, often because high-pressure well fluid flows in low pressure well, oil well output is caused to reduce.
Summary of the invention:
The technical problem to be solved in the present invention is to provide a kind of Multilateral Wells and divides the instrument of adopting and construction technology thereof, this instrument and construction technology thereof achieve the selective exploitation of Multilateral Wells, improve oil well output, effective packing branch well window, prevents from losing efficacy due to the pressure packing of window place the problems such as the formation water output caused.Overcome existing Multilateral Wells to adopt two branch well holes to close the mode of adopting to produce, the deficiency that oil well output reduces when two Multilateral Wells exploitation different pressures oil-gas reservoir.
The technical solution used in the present invention is: a kind of Multilateral Wells divides the instrument of adopting, and comprises conjunction and adopts joint; Conjunction is adopted upper end of joint and is connected main wellhead packer, and lower end connects orienting cover, closes to adopt in the middle of joint to have holes, and wherein a lower end, hole is processed with internal thread, and is connected with sealed joint pipe by internal thread, and sealed joint pipe lower end connects inserts sealed tube I; Close adopt joint another hole inwall on seal is housed, upper sealed tube is arranged in this hole, upper sealed tube has annular groove and at annular groove built with jump ring, upper sealed tube lower end connects adjusts long tube, adjust long tube lower end to connect and insert sealed tube II, upper sealed tube is connected with feeding pipe by sending into pin, sends into pipe upper end and is connected with top connection.
Use Multilateral Wells as above to divide a construction technology for the instrument of adopting, this processing step is as follows: salvagable two way seal packer is entered down two branch well hole design attitudes respectively, and packer, except energy packing bidirectionally stressor layer, also has endoporus sealing function; Conjunction is adopted upper end of joint and is connected main wellhead packer, lower end connects orienting cover, enter in main borehole under joint is adopted in the conjunction being connected with sealed joint pipe and insertion sealed tube I, when orienting cover prefabricated in orienting cover and well is to timing, inserting sealed tube I has inserted in the packer sealing cylinder in predetermined branch well, hydraulic setting main wellhead packer of giving up; Utilize send into pipe by be connected with adjust long tube and insert sealed tube II upper sealed tube under enter close adopt joint with in the through hole of seal, in hole, step limits the depth of setting of sealed tube, press down drilling tool and cut off feeding pin, at this moment insert sealed tube II and be inserted into the packer place in another branch well hole and sealed with the endoporus of packer; On submit drilling tool by top connection, send into pipe and take out in well and can realize conjunction and adopt, enter an oil pipe when needing to divide to adopt under in a hole that Shi He adopts joint, another branch is exploited by annular space; If only exploit a branch, extremely block up as long as enter one under in the branched pipe do not exploited; When Multilateral Wells needs operation, entering fishing tool salvaging main wellhead packer under only needing all can pull out two branches' insertion sealed tubes, then salvages the packer in Multilateral Wells as required.
The invention has the beneficial effects as follows: Multilateral Wells of the present invention divides the instrument of adopting to adopt in joint the mode of installing two insertion sealed tubes owing to have employed in conjunction, thus there is the function of the selective exploitation realizing Multilateral Wells, Multilateral Wells is used to divide the construction technology of the instrument of adopting effectively can improve oil well output, effective packing branch well window, prevents from losing efficacy due to the pressure packing of window place the problems such as the formation water output caused.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Accompanying drawing is the structural representation that Multilateral Wells divides the instrument of adopting.
Detailed description of the invention:
As shown in drawings, a kind of Multilateral Wells divides the instrument of adopting, and comprises conjunction and adopts joint 3; Conjunction is adopted joint 3 upper end and is connected main wellhead packer, lower end connects orienting cover 8, closes to adopt in the middle of joint 3 to have holes, and wherein a lower end, hole is processed with internal thread, and be connected with sealed joint pipe 9 by internal thread, sealed joint pipe 9 lower end connects inserts sealed tube I 10; Close adopt joint 3 another hole inwall on seal 6 is housed, upper sealed tube 7 is arranged in this hole, upper sealed tube 7 has annular groove and at annular groove built with jump ring 5, upper sealed tube 7 lower end connects adjusts long tube 11, adjust long tube 11 lower end to connect and insert sealed tube II 12, upper sealed tube 7 is connected with feeding pipe 2 by sending into pin 4, sends into pipe 2 upper end and is connected with top connection 1.
Use Multilateral Wells as above to divide a construction technology for the instrument of adopting, this processing step is as follows: salvagable two way seal packer is entered down two branch well hole design attitudes respectively, and packer, except energy packing bidirectionally stressor layer, also has endoporus sealing function; Conjunction is adopted joint 3 upper end and is connected main wellhead packer, lower end connects orienting cover 8, joint is adopted in the conjunction being connected with sealed joint pipe 9 and insertion sealed tube I 10 to be entered in main borehole 3 times, when prefabricated orienting cover in orienting cover 8 with well is to timing, inserting sealed tube I 10 has inserted in the packer sealing cylinder in predetermined branch well, hydraulic setting main wellhead packer of giving up; The upper sealed tube being connected with tune long tube 11 and insertion sealed tube II 12 is entered conjunction for 7 times and adopts in the through hole of joint 3 with seal 6 by utilization feeding pipe 2, in hole, step limits the depth of setting of sealed tube 7, press down drilling tool and cut off feeding pin 4, at this moment insert sealed tube II 12 and be inserted into the packer place in another branch well hole and sealed with the endoporus of packer; On submit drilling tool by top connection 1, send into pipe 2 and take out in well and can realize conjunction and adopt, enter an oil pipe when needing to divide to adopt under in a hole that Shi He adopts joint 3, another branch is exploited by annular space; If only exploit a branch, extremely block up as long as enter one under in the branched pipe do not exploited; When Multilateral Wells needs operation, entering fishing tool salvaging main wellhead packer under only needing all can pull out two branches' insertion sealed tubes, then salvages the packer in Multilateral Wells as required.
Be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Claims (2)
1. Multilateral Wells divides the instrument of adopting, and comprises conjunction and adopts joint (3); It is characterized in that: close and adopt joint (3) upper end connection main wellhead packer, lower end connects orienting cover (8), conjunction is adopted in the middle of joint (3) and is had holes, wherein a lower end, hole is processed with internal thread, and be connected with sealed joint pipe (9) by internal thread, sealed joint pipe (9) lower end connects inserts sealed tube I (10); Another hole inwall that joint (3) is adopted in conjunction is equipped with seal (6), upper sealed tube (7) is arranged in this hole, upper sealed tube (7) has annular groove and at annular groove built with jump ring (5), upper sealed tube (7) lower end connects adjusts long tube (11), adjust long tube (11) lower end to connect and insert sealed tube II (12), upper sealed tube (7) is managed (2) by feeding pin (4) with feeding and is connected, and sends into pipe (2) upper end and is connected with top connection (1).
2. the construction technology using the Multilateral Wells described in claim 1 to divide the instrument of adopting, it is characterized in that: this processing step is as follows: salvagable two way seal packer is entered down two branch well hole design attitudes respectively, packer, except energy packing bidirectionally stressor layer, also has endoporus sealing function; Conjunction is adopted joint (3) upper end and is connected main wellhead packer, lower end connects orienting cover (8), enter in main borehole under joint (3) is adopted in the conjunction being connected with sealed joint pipe (9) and insertion sealed tube I (10), when prefabricated orienting cover in orienting cover (8) with well is to timing, inserting sealed tube I (10) has inserted in the packer sealing cylinder in predetermined branch well, hydraulic setting main wellhead packer of giving up; Utilize send into pipe (2) will be connected with adjust the upper sealed tube (7) of long tube (11) and insertion sealed tube II (12) under enter conjunction and adopt in the through hole of joint (3) with seal (6), in hole, step limits the depth of setting of sealed tube (7), press down drilling tool and cut off feeding pin (4), at this moment insert sealed tube II (12) and be inserted into the packer place in another branch well hole and sealed with the endoporus of packer; On submit drilling tool by top connection (1), send into pipe (2) and take out in well and can realize conjunction and adopt, enter an oil pipe when needing to divide to adopt under in a hole that Shi He adopts joint (3), another branch is exploited by annular space; If only exploit a branch, extremely block up as long as enter one under in the branched pipe do not exploited; When Multilateral Wells needs operation, entering fishing tool salvaging main wellhead packer under only needing all can pull out two branches' insertion sealed tubes, then salvages the packer in Multilateral Wells as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210382695.5A CN102943650B (en) | 2012-10-10 | 2012-10-10 | A kind of Multilateral Wells divides the instrument of adopting and construction technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210382695.5A CN102943650B (en) | 2012-10-10 | 2012-10-10 | A kind of Multilateral Wells divides the instrument of adopting and construction technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102943650A CN102943650A (en) | 2013-02-27 |
| CN102943650B true CN102943650B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210382695.5A Active CN102943650B (en) | 2012-10-10 | 2012-10-10 | A kind of Multilateral Wells divides the instrument of adopting and construction technology thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112627778B (en) * | 2020-12-18 | 2023-02-21 | 中海石油(中国)有限公司 | Branch well double-pipe completion pipe string system and construction method and oil extraction method thereof |
| CN114458221B (en) * | 2021-08-25 | 2024-01-02 | 中海油能源发展股份有限公司 | Double-tube sealing tool and sealing method thereof |
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| US5462120A (en) * | 1993-01-04 | 1995-10-31 | S-Cal Research Corp. | Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes |
| CN1191586A (en) * | 1995-07-26 | 1998-08-26 | 马拉索恩石油公司 | Apparatus and process for drilling and completing multiple wells |
| CN1313449A (en) * | 1996-03-11 | 2001-09-19 | 安娜钻机国际有限公司 | Method for establishing branches at nodes of mother holes |
| CN1729343A (en) * | 2000-03-17 | 2006-02-01 | 马拉索恩石油公司 | Template and system of templates for drilling and completing offset well bores |
| CN2846708Y (en) * | 2005-09-29 | 2006-12-13 | 中国海洋石油总公司 | Intelligent joint for oil well electric pump separate production |
| CN101413384A (en) * | 2008-11-24 | 2009-04-22 | 中国石油集团长城钻探工程有限公司 | Method for sealing branch well window by using metal expansion pipe |
| CN201883996U (en) * | 2010-12-28 | 2011-06-29 | 中国石油天然气股份有限公司 | Multi-passage packer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8397819B2 (en) * | 2008-11-21 | 2013-03-19 | Bruce Tunget | Systems and methods for operating a plurality of wells through a single bore |
-
2012
- 2012-10-10 CN CN201210382695.5A patent/CN102943650B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5462120A (en) * | 1993-01-04 | 1995-10-31 | S-Cal Research Corp. | Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes |
| CN1191586A (en) * | 1995-07-26 | 1998-08-26 | 马拉索恩石油公司 | Apparatus and process for drilling and completing multiple wells |
| CN1313449A (en) * | 1996-03-11 | 2001-09-19 | 安娜钻机国际有限公司 | Method for establishing branches at nodes of mother holes |
| CN1729343A (en) * | 2000-03-17 | 2006-02-01 | 马拉索恩石油公司 | Template and system of templates for drilling and completing offset well bores |
| CN2846708Y (en) * | 2005-09-29 | 2006-12-13 | 中国海洋石油总公司 | Intelligent joint for oil well electric pump separate production |
| CN101413384A (en) * | 2008-11-24 | 2009-04-22 | 中国石油集团长城钻探工程有限公司 | Method for sealing branch well window by using metal expansion pipe |
| CN201883996U (en) * | 2010-12-28 | 2011-06-29 | 中国石油天然气股份有限公司 | Multi-passage packer |
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| CN102943650A (en) | 2013-02-27 |
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Effective date of registration: 20200921 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |