CN201753590U - Hydraulic pulling type packing release tool - Google Patents
Hydraulic pulling type packing release tool Download PDFInfo
- Publication number
- CN201753590U CN201753590U CN201020015074XU CN201020015074U CN201753590U CN 201753590 U CN201753590 U CN 201753590U CN 201020015074X U CN201020015074X U CN 201020015074XU CN 201020015074 U CN201020015074 U CN 201020015074U CN 201753590 U CN201753590 U CN 201753590U
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- CN
- China
- Prior art keywords
- pipe
- expansion
- expansion cone
- plug
- packer
- 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.)
- Expired - Lifetime
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a hydraulic pulling type packing release tool, which comprises a central pipe, an expansion cone, a screwed plug, an expansion pipe, a reducing joint, a blind pipe, a packer and a sealing ring. The central pipe is an oil pipe, a liquid inlet hole is arranged in the middle of the central pipe, and external threads arranged on the lower portion of the central pipe is connected with the screwed plug. The expansion cone is arranged in the middle of the central pipe, and the liquid inlet hole of the central pipe is positioned between the expansion cone and the screwed plug. A through hole is arranged in the middle of the expansion cone in a conical structure, and the position with the maximum diameter of the expansion cone is conformed to the inner diameter of the lower end of the expansion pipe in size. The screwed plug is sealed with the blind pipe in a sliding manner. The expansion pipe is in a flared structure with a large lower end and a small upper end, and the expansion pipe, the reducing joint, the blind pipe and the packer are all connected with each other in a threaded manner. The hydraulic pulling type packing release tool has the advantages that the packer can separate a tail pipe from an annular space among drill holes, and the tool requires no secondary lowering for drilling operation, and is simple in structure and reliable in performances.
Description
Technical field
The utility model is the improvement that a kind of liquid that is applicable to oil drilling, completion practice field pulls out formula packing releasing tool.
Background technology
The old filed exploitation middle and later periods, the effect of Multilateral Wells technology in oil reservoir development at the bottom of the limit is more and more obvious.The Multilateral Wells completion technique becomes the bottleneck of restriction oil field development.Existing completion method is to be lowered to screen casing at main borehole, and the Multilateral Wells section adopts barefoot completion.The problem that exists mainly is: branch well hole is intervals such as isolated water, gas effectively; For sandstone oil reservoir, branch well hole more easily shaked out after a period of time of going into operation, and is serious even cause well to collapse, and oil well is scrapped.Therefore, the completion tool of the suitable Multilateral Wells of exploitation one cover has important practical sense.
Summary of the invention
After releasing tool is lowered to branch well hole, sand preventing tools such as screen casing can be lost in well, be played the sand control effect, and need not to consider the connectivity problem with main borehole, be the short-cut method that solves a Multilateral Wells sand control difficult problem.The liquid that the purpose of this utility model is to provide a kind of effectively packing heterosphere and need not to bore plug pulls out formula packing releasing tool.
The utility model is achieved in that it is to be made of central tube, expansion cone, plug, expansion tube, reducer union, blind pipe, packer, sealing ring that described a kind of liquid pulls out formula packing releasing tool, central tube is one section oil pipe, there is expansion cone at the middle part, and the bottom is threaded with plug.Inlet opening on the central tube is between expansion cone and plug.Through hole is arranged in the middle of the expansion cone, outside up-small and down-big, tapered structure, it is consistent with expansion tube bottom diameter size to be positioned at expansion tube lower end and maximum outside diameter.Adopt slipper seal between plug and blind pipe.Expansion tube is that the lower end is big, the flared structure that the upper end is little.Expansion tube, reducer union, packer, blind pipe all adopt and are threaded.The blind pipe lower end has external screw thread to connect other completion tools such as screen casing.There is not sealing ring in the plug periphery seal groove.Space between expansion cone, central tube, the plug constitutes hydraulic cavities.During completion practice, this releasing tool is lowered to design attitude with the pipe string, turn on pump is suppressed, and liquid enters hydraulic cavities, and along with the rising gradually of pressure, at first by the envelope that expands, expansion cone moves up under action of hydraulic force packer subsequently.Expansion tube is fitted on the borehole wall after expanding.When expansion cone moved to the expansion tube upper end, expansion cone was separated with expansion tube, realizes giving up.
Advantage of the present utility model is:
(1) packer can be isolated the annular space between tail pipe and well;
(2) need not to be lowered to once more instrument and bore the plug operation;
(3) simple structure, dependable performance, compliance is strong.
Description of drawings
Accompanying drawing 1 liquid pulls out the structural representation of formula packing releasing tool.
Accompanying drawing 2 liquid pull out the interior tubing string schematic diagram of formula packing releasing tool.
1 central tube, 2 expansion cone, 3 plugs, 4 inlet openings, 5 expansion tubes, 6 reducer unions, 7 packers, 8 blind pipes, 9 sealing rings
The specific embodiment
Now the utility model will be further described in conjunction with Figure of description.
As shown in Figure 1, central tube 1 is externally threaded one section pipe for the lower end has, and there is expansion cone 2 at the middle part, and the bottom is threaded with plug 3, and there is the inlet opening 4 of 2 aperture 10mm at central tube 1 middle part, between expansion cone 2 and plug 3.In the middle of the expansion cone 2 through hole is arranged, outside tapered structure, its maximum outside diameter is consistent with the internal diameter size of expansion tube 5 lower ends.Adopt slipper seal between plug 3 and the blind pipe 8, plug 3 peripheries have 2 seal grooves, in sealing ring 9 is arranged.Expansion tube 5 is up-small and down-big horn-like structure, all adopts between expansion tube 5, reducer union 6, packer 7 and the blind pipe 8 to be threaded.Blind pipe 8 lower ends have external screw thread to be connected with other completion tools.Space between central tube 1, expansion cone 2, plug 3, expansion tube 5, reducer union 6, the blind pipe 8 constitutes hydraulic cavities.
During completion practice, after liquid pulled out the formula releasing tool and be lowered into design attitude, the turn on pump pressurization, liquid enters the hydraulic cavities sealed packer 7 that expands earlier by inlet opening 4.Continue pressurization, expansion cone 2 moves up under action of hydraulic force, and expansion tube 5 is close on the borehole wall under expansion cone 2 effects.After expansion tube 5 all expanded, expansion cone 2 breaks away from realization with expansion tube 5 gave up, and central tube 1, expansion cone 2, plug 3 trip out, and expansion tube 5, reducer union 6, packer 7, blind pipe 8 are stayed in the branch well hole.
Claims (2)
1. a liquid pulls out formula packing releasing tool, it is to be made of central tube [1], expansion cone [2], plug [3], expansion tube [5], reducer union [6], packer [7], blind pipe [8] and sealing ring [9], it is characterized in that: central tube [1] is one section oil pipe, there is expansion cone [2] at the middle part, the bottom is threaded with plug [3], and the inlet opening [4] on the central tube [1] is positioned between expansion cone and the plug [3]; Expansion cone [2] is positioned at expansion tube [5] lower end and expansion cone [2] maximum outside diameter is consistent with expansion tube [5] bottom diameter size; Adopt slipper seal between plug [3] and the blind pipe [8]; All adopt between expansion tube [5], reducer union [6], packer [7], the blind pipe [8] and be threaded; Blind pipe [8] lower end has external screw thread to connect screen casing.
2. a kind of liquid as claimed in claim 1 pulls out formula packing releasing tool, it is characterized in that: be provided with sealing ring [9] in plug [3] the periphery seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020015074XU CN201753590U (en) | 2010-01-15 | 2010-01-15 | Hydraulic pulling type packing release tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020015074XU CN201753590U (en) | 2010-01-15 | 2010-01-15 | Hydraulic pulling type packing release tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753590U true CN201753590U (en) | 2011-03-02 |
Family
ID=43621322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020015074XU Expired - Lifetime CN201753590U (en) | 2010-01-15 | 2010-01-15 | Hydraulic pulling type packing release tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201753590U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437735A (en) * | 2013-07-25 | 2013-12-11 | 中国石油天然气集团公司 | Underground variable-diameter limiting body blocking and isolating device in casing |
-
2010
- 2010-01-15 CN CN201020015074XU patent/CN201753590U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437735A (en) * | 2013-07-25 | 2013-12-11 | 中国石油天然气集团公司 | Underground variable-diameter limiting body blocking and isolating device in casing |
| CN103437735B (en) * | 2013-07-25 | 2016-02-10 | 中国石油天然气集团公司 | In pipe, down-hole reducing limit body blocks spacer assembly |
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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: 20160527 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: 20110302 |
|
| CX01 | Expiry of patent term |