CN202900113U - Down-hole in-pipe support device - Google Patents
Down-hole in-pipe support device Download PDFInfo
- Publication number
- CN202900113U CN202900113U CN 201220421843 CN201220421843U CN202900113U CN 202900113 U CN202900113 U CN 202900113U CN 201220421843 CN201220421843 CN 201220421843 CN 201220421843 U CN201220421843 U CN 201220421843U CN 202900113 U CN202900113 U CN 202900113U
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- Prior art keywords
- steel ball
- central tube
- hole
- skeleton
- section
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Abstract
The utility model discloses a down-hole in-pipe support device which avoids the fact that a pipe column is not easy to recycle due to the fact that slips can not normally contract and improves reliability of down-hole operation. The down-hole in-pipe support device comprises a steel ball skeleton, a central pipe, a compression spring and a weighted rod, wherein the compression spring is used for control of vertical lifting of the central pipe, a plurality of radial steel ball installation through holes are formed in the steel ball skeleton, a steel ball is arranged in each radial steel ball installation through hole, a steel ball retracting control operating section, a maximum diameter section and a spring flexible operating section are arranged on the central pipe, the steel ball retracting control operating section of the central pipe is connected with the maximum diameter section through a transition conical surface, and the compression spring is arranged between the maximum diameter section and the steel ball skeleton. When clamping is released, the weighted rod is placed in the central pipe and pressed at the upper end of the central pipe. When clamping is carried out, the plurality of steel balls are respectively clamped a gap portion between each two adjacent end faces of pitshafts and can not be retracted due to the fact that the maximum diameter section of the central pipe is abutted against the steel balls. The down-hole in-pipe support device can not cause deformation of the pitshafts and facilitates long-term stable operation of an oil well, and the operating pipe column is easy to recycle.
Description
Technical field
The utility model relates to the oil-well drilling equipment technical field, particularly relates to a kind of down-hole pipe inner supporting device.
Background technology
In oil field oil exploitation process, often will be to a plurality of oil reservoir separate zone productions.To oil-bearing stratum flooding the time, often also will be to a plurality of oil reservoir seperated layer water injections.Oil production by layer and seperated layer water injection all will separate each oil reservoir or water layer with packer, then implement relevant operation.At present, the combination of termination outfit and tubing string on the general employing packer, termination supporting slip under the packer is sat card by supporting slip in the desired any well section of design and is set up the artificial bottom of a well, and support tube column and instrument weight are also born the load variations that the variation of well external and internal pressure brings.
When supporting slip was opened, each tile was strutted in the circumferential direction of the circle, the powerful extruding of its hangnail structure and shaft in wall, card jail, and relevant underground work is after this just deployable.Pit shaft is made of petroleum casing pipe or oil pipe.
At present, this dependence crimp and two problems can appear in the technology mode of the high frictional force support load that produces: one, easily cause borehole wall cut, shaft deformation, be unfavorable for the oil well long-term stable operation; Its two, supporting mechanism for a long time in well, owing to the reasons such as oil well or well fouling, corrosion cause slips can not normal contraction, and may cause tubing string not regain.
The utility model content
The purpose of this utility model is for the technological deficiency that exists in the prior art, and a kind of down-hole pipe inner supporting device is provided, and avoids because the tubing string that slips can not normal contraction causes is difficult for regaining the reliability of raising underground work.
For realizing that the technical scheme that the purpose of this utility model adopts is:
A kind of down-hole pipe inner supporting device, it is characterized in that, comprise the steel ball skeleton, central tube, the Compress Spring that is used for control centre's pipe vertical lift, weighted lever, described steel ball skeleton is round tubular, be provided with a plurality of radially steel balls on the described steel ball skeleton through hole is installed, each radially is separately installed with a steel ball in the steel ball installation through hole, described central tube is positioned at described steel ball skeleton, has steel ball retraction control active section on the described central tube, maximum gauge section and telescopic spring active section, the maximum gauge section of described central tube and described steel ball inboard wall of skeleton are slidingly matched, the diameter of described central tube steel ball retraction control active section is less than the maximum gauge section, described central tube steel ball retraction control active section and maximum gauge section are joined by the transition conical surface, between described central tube telescopic spring active section and the described steel ball skeleton described Compress Spring is installed, the weight of described weighted lever is greater than the elastic force of described Compress Spring; Described steel ball skeleton upper end is threaded with top connection; During unfreezing, described weighted lever places in the described central tube and pushes down the upper end of central tube; When sitting card, a plurality of described steel balls block respectively the clearance portion of adjacent two pit shaft end faces, and are propped up and can not bounce back by the maximum outside diameter section of described central tube.
The diameter of described central tube steel ball retraction control active section bounces back to take described steel ball and does not stretch out described steel ball skeleton cylindrical as foundation.
Described central tube maximum outside diameter section is positioned at the middle part, and described steel ball retraction control active section and telescopic spring active section lay respectively at the top and bottom of described maximum outside diameter section.
The described Compress Spring one end position corresponding with the telescopic spring active section of described central tube is provided with the first limiting stand, the described Compress Spring other end position corresponding with described steel ball skeleton is provided with the second limiting stand, and described Compress Spring is by described the first limiting stand and the restriction of the second limiting stand.
The outer radius portion that each described radially steel ball is installed through hole is necking part.
Described pit shaft is petroleum casing pipe or oil pipe.
Compared with prior art, the beneficial effects of the utility model are:
1, pipe inner supporting device of the present utility model stretches into the clearance portion of adjacent two wall casing end faces by steel ball, and is propped up by the maximum outside diameter section of described central tube and can not bounce back to realize to sit card, can not cause the distortion of pit shaft, is conducive to the oil well long-term stable operation.
2, the cooperation of the transition conical surface of pipe inner supporting device of the present utility model by central tube, Compress Spring, weighted lever makes and supports the steel ball retraction, can not produce stuck phenomenon, and working string easily reclaims.
3, pipe inner supporting device of the present utility model is simple in structure, easy to operate.
Description of drawings
Figure 1 shows that the schematic diagram of pipe inner supporting device unfreezing state of the present utility model;
A-A sectional drawing shown in Figure 2;
Figure 3 shows that the schematic diagram of pipe inner supporting device seat card state of the present utility model;
Figure 4 shows that the B-B sectional view.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The schematic diagram of the utility model down-hole pipe inner supporting device such as Fig. 1-shown in Figure 4, comprise steel ball skeleton 6, central tube 3, be used for Compress Spring 5, weighted lever 7 that vertical lift is managed by control centre, described steel ball skeleton 6 is round tubular, be provided with a plurality of radially steel balls on the described steel ball skeleton 6 through hole is installed, each radially is separately installed with a steel ball 2 in the steel ball installation through hole.Described central tube 3 is positioned at described steel ball skeleton 6, has the control of steel ball retraction active section, maximum gauge section and telescopic spring active section on the described central tube, and the maximum gauge section of described central tube and described steel ball inboard wall of skeleton are slidingly matched.The diameter of described central tube steel ball retraction control active section is less than the maximum gauge section, described central tube steel ball retraction control active section and maximum gauge section are joined by the transition conical surface, between described central tube telescopic spring active section and the described steel ball skeleton described Compress Spring 5 is installed, the weight of described weighted lever 7 is greater than the elastic force of described Compress Spring 5.Described steel ball skeleton 6 upper ends are threaded with top connection 1.During unfreezing, described weighted lever 7 places in the described central tube 3 and pushes down the upper end of central tube.When sitting card, a plurality of described steel balls 2 block respectively the clearance portion of adjacent two pit shaft 8 end faces, and are propped up and can not bounce back by the maximum outside diameter section of described central tube 3.The diameter of the steel ball retraction control active section of described central tube 3 bounces back to take described steel ball and does not stretch out described steel ball skeleton 6 cylindricals as foundation.Described pit shaft 8 is petroleum casing pipe or oil pipe.
In the present embodiment, described central tube maximum outside diameter section is positioned at the middle part, and described steel ball retraction control active section and telescopic spring active section lay respectively at the top and bottom of described maximum outside diameter section.
The mounting means of Compress Spring described in the present embodiment 5 is: the described Compress Spring 5 one ends position corresponding with the telescopic spring active section of described central tube is provided with the first limiting stand, the described Compress Spring other end position corresponding with described steel ball skeleton is provided with the second limiting stand, and described Compress Spring is by described the first limiting stand and the restriction of the second limiting stand.
In order to prevent that steel ball 2 from rolling out from the periphery of steel ball skeleton 6, steel ball radially to be installed through hole carry out necking down and process, the outer radius portion that each described radially steel ball is installed through hole is necking part.
During use, described top connection 1 lower end is threaded with described steel ball skeleton 6 upper ends, and described top connection 1 upper end is threaded with downhole tool combination and working string.
During operation, down-hole of the present utility model pipe inner supporting device sinks to the down-hole certain position with tubing string and tool combinations along pit shaft 8 inwalls, when described weighted lever 7 is taken out by fishing tool, described Compress Spring 5 pops up described central tube 3, the transition conical surface of described central tube 3 is radially progressively outwards extruded described steel ball 2 in moving past journey, because the restriction of pit shaft 8 inner diameters, described steel ball 2 can not outwards stretch out fully, carry or transfer working string on this moment is slow, when described steel ball 2 walk to adjacent two pit shafts 8 pass through the position, gap of the end surfaces that casing coupling 4 connects the time, described steel ball 2 is overhanging to lose restriction, described central tube 3 moves under the elastic force effect of described Compress Spring 5 fast, described steel ball 2 is at utmost extruded by the transition conical surface of described central tube 3, break through the pit shaft inner wall limit and extend into position, adjacent wellbore end clearance, and the continuation under elastic force promotes of described central tube is up, until till the described central tube transition conical surface and described top connection lower end inner conical surface offset, described steel ball 2 is propped up by the maximum outside diameter cylinder of described central tube 3 and can not bounce back at this moment, so far, because described steel ball 2 is blocked by position, adjacent wellbore end clearance, working string and tool combinations no longer can move up and down, and its total weight is born by down-hole of the present utility model pipe inner supporting device by described steel ball 2 transmission beginnings and realized sitting card.During unfreezing, only need again to render to described weighted lever 7 in the working string, make described Compress Spring 5 compressed by described central tube 3, when described central tube 3 is displaced downwardly to described steel ball 2 disengaging transition conical surface constraint synchronously, External Force Acting makes described steel ball 2 retractions realize unfreezing, and working string and tool combinations (containing bracing or strutting arrangement itself) can move up and down along the borehole wall smoothly.
Claims (6)
1. inner supporting device is managed in a down-hole, it is characterized in that, comprise the steel ball skeleton, central tube, the Compress Spring that is used for control centre's pipe vertical lift, weighted lever, described steel ball skeleton is round tubular, be provided with a plurality of radially steel balls on the described steel ball skeleton through hole is installed, each radially is separately installed with a steel ball in the steel ball installation through hole, described central tube is positioned at described steel ball skeleton, has steel ball retraction control active section on the described central tube, maximum gauge section and telescopic spring active section, the maximum gauge section of described central tube and described steel ball inboard wall of skeleton are slidingly matched, the diameter of described central tube steel ball retraction control active section is less than the maximum gauge section, described central tube steel ball retraction control active section and maximum gauge section are joined by the transition conical surface, between described central tube telescopic spring active section and the described steel ball skeleton described Compress Spring is installed, the weight of described weighted lever is greater than the elastic force of described Compress Spring; Described steel ball skeleton upper end is threaded with top connection; During unfreezing, described weighted lever places in the described central tube and pushes down the upper end of central tube; When sitting card, a plurality of described steel balls block respectively the clearance portion of adjacent two pit shaft end faces, and are propped up and can not bounce back by the maximum outside diameter section of described central tube.
2. inner supporting device is managed in down-hole according to claim 1, it is characterized in that, the diameter of described central tube steel ball retraction control active section bounces back to take described steel ball and do not stretch out described steel ball skeleton cylindrical as foundation.
3. inner supporting device is managed in down-hole according to claim 1 and 2, it is characterized in that, described central tube maximum outside diameter section is positioned at the middle part, and described steel ball retraction control active section and telescopic spring active section lay respectively at the top and bottom of described maximum outside diameter section.
4. inner supporting device is managed in down-hole according to claim 1 and 2, it is characterized in that, the described Compress Spring one end position corresponding with the telescopic spring active section of described central tube is provided with the first limiting stand, the described Compress Spring other end position corresponding with described steel ball skeleton is provided with the second limiting stand, and described Compress Spring is by described the first limiting stand and the restriction of the second limiting stand.
5. inner supporting device is managed in down-hole according to claim 1 and 2, it is characterized in that, the outer radius portion that each described radially steel ball is installed through hole is necking part.
6. inner supporting device is managed in down-hole according to claim 1 and 2, it is characterized in that, described pit shaft is petroleum casing pipe or oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421843 CN202900113U (en) | 2012-08-23 | 2012-08-23 | Down-hole in-pipe support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421843 CN202900113U (en) | 2012-08-23 | 2012-08-23 | Down-hole in-pipe support device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900113U true CN202900113U (en) | 2013-04-24 |
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ID=48120796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220421843 Expired - Fee Related CN202900113U (en) | 2012-08-23 | 2012-08-23 | Down-hole in-pipe support device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900113U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817565A (en) * | 2012-08-23 | 2012-12-12 | 天津市广林石油机械有限公司 | Downhole intra-tube support device |
| CN112282660A (en) * | 2020-11-09 | 2021-01-29 | 孟庆余 | Assembled drilling device capable of automatically injecting water |
-
2012
- 2012-08-23 CN CN 201220421843 patent/CN202900113U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817565A (en) * | 2012-08-23 | 2012-12-12 | 天津市广林石油机械有限公司 | Downhole intra-tube support device |
| CN112282660A (en) * | 2020-11-09 | 2021-01-29 | 孟庆余 | Assembled drilling device capable of automatically injecting water |
| CN112282660B (en) * | 2020-11-09 | 2022-09-23 | 山东巨匠机械集团有限公司 | Assembled drilling device capable of automatically injecting water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20160823 |