CN201581856U - Multilevel compressive extro-pipe packer used for segmented completion of horizontal well - Google Patents
Multilevel compressive extro-pipe packer used for segmented completion of horizontal well Download PDFInfo
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- CN201581856U CN201581856U CN2010200150720U CN201020015072U CN201581856U CN 201581856 U CN201581856 U CN 201581856U CN 2010200150720 U CN2010200150720 U CN 2010200150720U CN 201020015072 U CN201020015072 U CN 201020015072U CN 201581856 U CN201581856 U CN 201581856U
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- piston
- pipe
- central pipe
- central tube
- packer
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Abstract
The utility model provides a multilevel compressive extro-pipe packer used for segmented completion of a horizontal well, consisting of an upper joint, a rubber cylinder, a central pipe, a pushing sleeve, a piston, a pin, a liquid inlet and a hydraulic cylinder, wherein the upper joint is connected with the central pipe by thread; the rubber cylinder is arranged between the upper joint and the pushing sleeve; the piston is connected with the central pipe by the pin; the central pipe, the piston and the hydraulic cylinder form a hydraulic chamber; the central pipe is provided with the liquid inlet; and the internal thread of the upper joint and the external thread at the lower part of the central pipe are connected with the sleeve. During well completion operation, the packer enters downwards along with a pipe string to an assigned position, then the pump is started to pressurize the packer, and the liquid enters the hydraulic chamber through the liquid inlet on the central pipe; and when a certain pressure is achieved, the pin is sheared, the hydraulic force pushes the piston and the pushing sleeve to extrude and compress the rubber cylinder so that the external diameter of the rubber cylinder is increased, thus contacting with the well wall closely and achieving the aim of blocking the well hole. The multilevel compressive extro-pipe packer has the advantages of controlling water by segments, prolonging the service life of the oil well, fracturing production by segments, improving the operation effects such as fracturing and the like, and controlling production by segments.
Description
Technical field
The utility model is a kind of horizontal well in segments completion multi-stage compression formula external packer of pipe that is applicable to the oil drilling completion.
Background technology
Horizontal well has obtained using widely as a kind of means of effective raising oil well recovery ratio at present.Horizontal well completion mainly contains well cementation perforation and two kinds of completion mode of screen casing bore hole, but the horizontal well characteristics are oil reservoir well segment lengths, and cementing quality is difficult to guarantee; The complete especially section bore hole of sieve tube completion.These two kinds of completion mode all can not be avoided the problem of the full well section of water logging, the problem of fracturing yield increasing operation implementation result difference.Therefore need adopt an effective measure is divided into a plurality of segments with horizontal hole, to realize technical measures such as segmentation control water, segmentation manufacture control, staged fracturing volume increase.
Summary of the invention
Horizontal well completion is owing to exist the problem that can not avoid waterflooded reservoir and later stage fracturing yield increasing operation effectiveness difference, the segmentation of need adopting an effective measure exploitation.The purpose of this utility model be to provide have simple in structure, easy and simple to handle, packing distance, a kind of horizontal well in segments completion multi-stage compression formula external packer of pipe of advantage durable in use.
The utility model be achieved in that a kind of horizontal well in segments completion multi-stage compression formula external packer of pipe by top connection, packing element, central tube, push cover, piston, pin, inlet opening, fluid cylinder and form.Top connection and central tube are by being threaded, top connection and push packing element is arranged between the cover, piston is connected by pin with central tube, constitutes hydraulic cavities between central tube, piston and the fluid cylinder, inlet opening is arranged on the central tube, and the external screw thread of the internal thread of top connection, central tube bottom is connected with sleeve pipe.Between piston and the fluid cylinder, all adopt slipper seal between piston and the central tube.During completion practice, external screw thread by top connection internal thread, central tube bottom is lowered to the sleeve pipe polyphone, after being lowered into assigned address, the turn on pump pressurization, liquid enters in the hydraulic cavities by the inlet opening on the central tube, when reaching certain pressure, pin is sheared, and hydraulic coupling promotes piston and pushes cover compression packing element, and packing element is compressed, the external diameter increase closely contacts with the borehole wall, reaches the purpose of packing well.
Patent of the present invention becomes multistage with the horizontal hole packing.Have the following advantages:
(1) segmentation control water prolongs the oil well production life-span;
(2) staged fracturing is gone into operation, and improves operation effectivenesses such as pressure break;
(3) segmentation control is produced.
Description of drawings
Fig. 1 is the structural representation of horizontal well in segments completion multi-stage compression formula external packer of pipe.
Top connection 1 packing element 2 central tubes 3 are pushed cover 4 pistons 5 pins 6 inlet openings 7 fluid cylinders 8
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description.
As shown in the figure, this packer top connection 1 and central tube 3 are by being threaded, top connection 3 and push cover and packing element 2 is arranged between 4, piston 5 is connected by pin 6 with central tube 3, constitute hydraulic cavities between central tube 3, piston 5 and the fluid cylinder 8, inlet opening 7 is arranged on the central tube 3, and the external screw thread of the internal thread of top connection 1, central tube 3 bottoms is connected with sleeve pipe.During completion practice, external screw thread by top connection 1 internal thread, central tube 3 bottoms is lowered to the sleeve pipe polyphone, after being lowered into assigned address, the turn on pump pressurization, liquid enters in the hydraulic cavities by the inlet opening on the central tube 37, when reaching certain pressure, pin 6 is sheared, and hydraulic coupling promotes piston 5 and pushes cover 4 compression packing elements, and packing element 2 is compressed, the external diameter increase closely contacts with the borehole wall, reaches the purpose of packing well.
Claims (2)
1. horizontal well in segments completion multi-stage compression formula external packer of pipe, it is by top connection [1], packing element [2], central tube [3], push cover [4], piston [5], pin [6], inlet opening [7], fluid cylinder [8] is formed, it is characterized in that: top connection [1] and central tube [3] are by being threaded, top connection [1] and push packing element [2] is arranged between the cover [4], piston [5] is connected by pin [6] with central tube [3], central tube [3], constitute hydraulic cavities between piston [5] and the fluid cylinder [8], inlet opening [7] is arranged, the internal thread of top connection [1] on the central tube [3], the external screw thread of central tube [3] bottom is connected with sleeve pipe.
2. a kind of horizontal well in segments completion multi-stage compression formula external packer of pipe as claimed in claim 1 is characterized in that: between piston [5] and the fluid cylinder [8], all adopt slipper seal between piston [5] and the central tube [3].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200150720U CN201581856U (en) | 2010-01-15 | 2010-01-15 | Multilevel compressive extro-pipe packer used for segmented completion of horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200150720U CN201581856U (en) | 2010-01-15 | 2010-01-15 | Multilevel compressive extro-pipe packer used for segmented completion of horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201581856U true CN201581856U (en) | 2010-09-15 |
Family
ID=42723854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200150720U Expired - Lifetime CN201581856U (en) | 2010-01-15 | 2010-01-15 | Multilevel compressive extro-pipe packer used for segmented completion of horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201581856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680890A (en) * | 2017-01-11 | 2017-05-17 | 重庆大学 | Mining primary rock stress testing device and method through hydraulic fracturing method |
| CN108397181A (en) * | 2018-04-08 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of pressure break and the Joint Implementation tubing string and method of the aquatic production of control |
-
2010
- 2010-01-15 CN CN2010200150720U patent/CN201581856U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680890A (en) * | 2017-01-11 | 2017-05-17 | 重庆大学 | Mining primary rock stress testing device and method through hydraulic fracturing method |
| CN106680890B (en) * | 2017-01-11 | 2018-07-03 | 重庆大学 | Mining hydrofracturing method In-situ rock stress measurement device and its test method |
| CN108397181A (en) * | 2018-04-08 | 2018-08-14 | 中国石油化工股份有限公司 | A kind of pressure break and the Joint Implementation tubing string and method of the aquatic production of control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151113 Address after: 100029 Beijing Chaoyang District Hui Xin a No. twelve layer 6 Patentee after: SINOPEC OILFIELD SERVICE CORPORATION Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee before: China Petrochemical Group Corp. Patentee before: Well-Drilling Technology Inst., Shengli Petroleum Administration, SINOPEC |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100915 |
|
| CX01 | Expiry of patent term |