CN101429850B - Branching well seat suspension liner tube hydraulic booster expansion system - Google Patents
Branching well seat suspension liner tube hydraulic booster expansion system Download PDFInfo
- Publication number
- CN101429850B CN101429850B CN2008101150778A CN200810115077A CN101429850B CN 101429850 B CN101429850 B CN 101429850B CN 2008101150778 A CN2008101150778 A CN 2008101150778A CN 200810115077 A CN200810115077 A CN 200810115077A CN 101429850 B CN101429850 B CN 101429850B
- Authority
- CN
- China
- Prior art keywords
- piston rod
- piston
- hydraulic cylinder
- boosting
- seat suspension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention relates to a seat suspension liner pipe hydraulic boosting expansion system for a branch well. The system is characterized in that the system comprises a sleeve, a liner pipe, an hole enlargement bit, a hydraulic cylinder, a piston rod, a boosting piston and a drill rod; the hole enlargement bit is arranged inside the liner pipe, and the bottom of the liner pipe is arranged inside the sleeve; the top and the bottom of the hydraulic cylinder are sealed respectively, and the bottom of the hydraulic cylinder is hermetically connected with the top of the liner pipe through a bolt pin; the piston rod is a hollow rod, and the bottom of the piston rod passes through the bottom of the hole enlargement bit and is fixed on the bottom of the hole enlargement bit; the top of the piston rod passes through the top of the boosting piston and is connected with the drill rod; the boosting piston is provided with a liquid outlet hole communicated with the center of the piston rod. The system has a simple structure and convenient execution, can not only improve the thrust effect, but also remove the potential safety hazard caused by hypertension. The system can be widely used in the operating process of various branch well seat suspension systems.
Description
Technical field
The present invention relates to a kind of hydraulic means, particularly about a kind of branching well seat suspension liner tube hydraulic booster expansion system.
Background technology
Bohai Bay Oil on stream, some old filed later stages need be bored the adjustment well, to reach stable yields and the purpose that increases oil control water.Generally; Sidetracking in old well; Often be employed in the whipstock set that is lowered to the anchor block sealing mechanism that has slip insert in the pit shaft of sleeve pipe, this tends to cause damage for sleeve pipe, simultaneously owing to be lowered to after the whipstock; Therefore be difficult to link up old well, formed after the sidetracking us and can only obtain the new well of sidetracking and the situation that is difficult to utilize again old well.In order farthest to bring into play the productive potentialities in oil field, we often hope in the old well of sidetracking, can also keep and utilize original old well again, are convenient to the production and the management in oil field like this.
If it is not all right obviously adopting traditional whipstock technology; In today that material technology develops rapidly; Increasingly in the petroleum industry turned to notice the development of new tool to come up; The branching well seat suspension technology (as shown in Figure 1) of up-to-date use is in old well, to offer on sleeve pipe 11 scope of operations of Multilateral Wells, but is lowered to the bushing pipe 12 of a radial deformation.Promote expanding prick 13 through a hydraulic means then, expanding prick 13 is moved in bushing pipe 12 from bottom to top.Inclined-plane 14 extruding bushing pipes 12 through expanding prick 13 heads are close on the inwall of sleeve pipe 11 after making bushing pipe 12 produce plastic strain, thereby form a step surface circle level or that tilt, so that carry out next step operation.This branching well seat suspension technology both can satisfy the traditional handicraft requirement of casing sidetracking operation sidetrack horizontal well well, can make full use of bushing pipe again and substitute traditional whipstock; Not only improved concentrated stress well, protected old casing, and after sidetracking, can also ensure that old well has bigger latus rectum, proceeds production operation.
When the above-mentioned radially expander technology of application is carried out operation; Hydraulic means is one of key technology to expanding prick bottom thrust size; Use bigger thrust; Can increase work efficiency, obtain reasonable bushing pipe stressed effect, but bigger system pressure can form higher potential safety hazard in process of production.In order to realize the optimum efficiency of bushing pipe radial deformation, often hope that hydraulic means is minimum to the thrust of expanding prick bottom, but can realize maximum bushing pipe stressed effect, under identical pressure condition, the thrust that how to increase piston is the problem that the present invention pays close attention to.
Summary of the invention
To the problems referred to above, it is lower to the purpose of this invention is to provide a kind of pressure, but has the branching well seat suspension liner tube hydraulic booster expansion system of higher forces effect.
Be to realize above-mentioned purpose, the present invention takes following technical scheme: a kind of branching well seat suspension liner tube hydraulic booster expansion system, and it is characterized in that: it comprises sleeve pipe, bushing pipe, expanding prick, hydraulic cylinder, piston rod, boosting piston and drilling rod; Said expanding prick is arranged in the said bushing pipe, and the bottom seals of said bushing pipe is arranged in the said sleeve pipe; Said hydraulic cylinder top and bottom seal respectively, and the bottom of said hydraulic cylinder is sealedly connected on the top of said bushing pipe through pin; Said piston rod is a hollow stem, and said expanding prick bottom is passed and be fixed in said piston rod bottom; Said piston rod part passes said boosting piston top, and connects said drilling rod; Said boosting piston is provided with the fluid hole that is communicated with said piston rod center.
The present invention is owing to take above technical scheme, and it has the following advantages: 1, the present invention is because with the bottom of bushing pipe, and the bottom of hydraulic cylinder and top seal; And on expanding prick and boosting piston, wear a hollow piston bar; Therefore can be through in piston rod, charging into liquid, the thrust that makes progress to one is formed respectively on the bottom at expanding prick and two parts of boosting piston; Thereby realized under a lower pressure, realizing higher thrust effect.2, the present invention is simple in structure, and it is convenient to implement, and both can improve thrust effect, can eliminate the potential safety hazard of hypertonia again, can be widely used in the operating process of various branching well seat suspension systems.
Description of drawings
Branching well seat suspension system sketch map in Fig. 1 prior art
Fig. 2 is a structural representation of the present invention
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
As shown in Figure 2, branching well seat suspension liner tube hydraulic booster expansion of the present invention system comprises sleeve pipe 1, bushing pipe 2, expanding prick 3, hydraulic cylinder 4, piston rod 5, boosting piston 6 and drilling rod 7.
Expanding prick 3 of the present invention is arranged in the bushing pipe 2, and the frustum of expanding prick 3 is plugged in bushing pipe 2 bottoms that desire stretches, and the bottommost sealing of bushing pipe 2 utilizes seat to put device bushing pipe 2 is lowered to sleeve pipe 1, is arranged in the sleeve pipe 1 position that seat is hung will be set.The top and the bottom of hydraulic cylinder 4 seal respectively, and the bottom of hydraulic cylinder 4 is sealedly connected on the top of bushing pipe 2 through pin.Piston rod 5 is a hollow stem, and expanding prick 3 is passed in the bottom of piston rod 5, is fixed on expanding prick 3 bottoms; Boosting piston 6 jointed rods 7 are passed at piston rod 5 tops.Boosting piston 6 is provided with the fluid hole 61 that is communicated with piston rod 5 centers.
When the present invention uses, in piston rod 5, injecting liquid through drilling rod 7, can be that clear water also can be an oil.Liquid gets in the bushing pipe 2 through piston rod 5 bottoms, and pressure P is acted on the expanding prick 3, in the process that expanding prick 3 upwards advances bushing pipe 2 hole enlargements is stretched; Liquid gets into hydraulic cylinder 4 through the fluid hole on the boosting piston 6 61 simultaneously, and pressure P is acted on the boosting piston 6, and boosting piston 6 upwards advances and can upwards spur expanding prick 3 through piston rod 5, thereby realizes the hydraulically powered state of two plugs.Hydraulic cylinder 4 can be cut off at the pin that will be connected under the drive of drilling rod 7 between hydraulic cylinder 4 and the bushing pipe 2 at last, and takes out hydraulic cylinder 4 and expanding prick 3 etc.The state that this two plugs of the present invention drive is equivalent to use two hydraulic means series connection to use, and both can realize that hydraulic means was less to the thrust of expanding prick bottom, can realize double piston thrust again.
The present invention shows that through test of many times under equal bulbs of pressure P-condition, the present invention improves nearly one times (as shown in table 1) than the single piston thrust in the prior art:
Table 1: end thrust Fy and stress thereof under the different bulbs of pressure conditions
Claims (1)
1. branching well seat suspension liner tube hydraulic booster expansion system, it is characterized in that: it comprises sleeve pipe, bushing pipe, expanding prick, hydraulic cylinder, piston rod, boosting piston and drilling rod; Said expanding prick is arranged in the said bushing pipe, and the bottom seals of said bushing pipe is arranged in the said sleeve pipe; Said hydraulic cylinder top and bottom seal respectively, and the bottom of said hydraulic cylinder is sealedly connected on the top of said bushing pipe through pin; Said piston rod is a hollow stem, and said expanding prick bottom is passed and be fixed in said piston rod bottom; Said piston rod part passes said boosting piston top, and connects said drilling rod; Said boosting piston is provided with the fluid hole that is communicated with said piston rod center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101150778A CN101429850B (en) | 2008-06-16 | 2008-06-16 | Branching well seat suspension liner tube hydraulic booster expansion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101150778A CN101429850B (en) | 2008-06-16 | 2008-06-16 | Branching well seat suspension liner tube hydraulic booster expansion system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101429850A CN101429850A (en) | 2009-05-13 |
| CN101429850B true CN101429850B (en) | 2012-06-06 |
Family
ID=40645464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101150778A Active CN101429850B (en) | 2008-06-16 | 2008-06-16 | Branching well seat suspension liner tube hydraulic booster expansion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101429850B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453105Y (en) * | 2000-11-02 | 2001-10-10 | 辽河石油勘探局工程技术研究院 | Under-reaming tool for small hole |
| WO2002001037A1 (en) * | 2000-06-28 | 2002-01-03 | Weatherford/Lamb, Inc. | Drill bits |
| CN2833091Y (en) * | 2005-11-11 | 2006-11-01 | 长庆石油勘探局 | Hole enlargement tool centralizer for casing pipe |
| CN2835534Y (en) * | 2005-08-05 | 2006-11-08 | 刘文西 | Bottomless expansion pipe diameter expanding device |
| CN201214983Y (en) * | 2008-06-16 | 2009-04-01 | 中国海洋石油总公司 | Hydraulic booster expansion system for liner tube hanging on branch well base |
-
2008
- 2008-06-16 CN CN2008101150778A patent/CN101429850B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002001037A1 (en) * | 2000-06-28 | 2002-01-03 | Weatherford/Lamb, Inc. | Drill bits |
| CN2453105Y (en) * | 2000-11-02 | 2001-10-10 | 辽河石油勘探局工程技术研究院 | Under-reaming tool for small hole |
| CN2835534Y (en) * | 2005-08-05 | 2006-11-08 | 刘文西 | Bottomless expansion pipe diameter expanding device |
| CN2833091Y (en) * | 2005-11-11 | 2006-11-01 | 长庆石油勘探局 | Hole enlargement tool centralizer for casing pipe |
| CN201214983Y (en) * | 2008-06-16 | 2009-04-01 | 中国海洋石油总公司 | Hydraulic booster expansion system for liner tube hanging on branch well base |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101429850A (en) | 2009-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101864922B (en) | Compression type dual-sealing open hole packer | |
| CN101906946B (en) | Hydraulic expansion-type rotary liner hanger | |
| AU2020206966B2 (en) | Downhole method | |
| CN104819858B (en) | Test device for evaluating reliability of downhole tool of horizontal well | |
| AU2020205421B2 (en) | Downhole method | |
| CN110374570A (en) | A kind of bi-lateral horizontal well naked eye staged fracturing construction method | |
| CA3219869A1 (en) | Full-bore and infinite-stage segmented-fracturing sliding sleeve based on intelligent label control, and implementation method | |
| CN110397419B (en) | Open hole sidetracking setting device for air drilling | |
| CN202866741U (en) | Expanding open hole packer with hydraulic control lock | |
| CN201214983Y (en) | Hydraulic booster expansion system for liner tube hanging on branch well base | |
| CN105507867A (en) | Apparatus and method for producing borehole fissures | |
| CN101429850B (en) | Branching well seat suspension liner tube hydraulic booster expansion system | |
| CN2846714Y (en) | Large through caliber tail tube suspension device | |
| CN207033424U (en) | Fracturing tool string without differential drag fracturing technique in a kind of sleeve pipe | |
| CN2864080Y (en) | Hydraulic releasing tool | |
| CN201092835Y (en) | Liner tube backing bonded repair tool | |
| CN2844407Y (en) | Fluid pressure type down-hole deformed casing obturator | |
| CN203685092U (en) | Continuous milling device | |
| CN109915046B (en) | Rotary seal loading process and device for minor repair operation | |
| CN106368630A (en) | Method and special tool for sand flushing | |
| CN111058792A (en) | Coiled tubing perforation-free under-pressure operation-free well completion device and method | |
| CN201714335U (en) | Compressed double-sealed open hole packer | |
| CN205908282U (en) | Dissolve bridging plug entirely | |
| CN212774200U (en) | Filling device for underground casing | |
| CN201460741U (en) | Variable PDC drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Patentee after: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee after: Institute of Science and Technology, China Petroleum Group Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center Patentee before: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Patentee before: Institute of Science and Technology, China Petroleum Group |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Co-patentee after: Institute of Science and Technology, China Petroleum Group Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Tianjin Branch of China Sea Prtroleum (China) Co., Ltd. Co-patentee before: Institute of Science and Technology, China Petroleum Group |