CN203008846U - Self-expanding type oil and gas well wall plugging and strengthening pipe nipple and sending and releasing device thereof - Google Patents
Self-expanding type oil and gas well wall plugging and strengthening pipe nipple and sending and releasing device thereof Download PDFInfo
- Publication number
- CN203008846U CN203008846U CN 201220603522 CN201220603522U CN203008846U CN 203008846 U CN203008846 U CN 203008846U CN 201220603522 CN201220603522 CN 201220603522 CN 201220603522 U CN201220603522 U CN 201220603522U CN 203008846 U CN203008846 U CN 203008846U
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- central tube
- sleeve
- pipe nipple
- self
- gas well
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Abstract
The utility model provides a self-expanding type oil and gas well wall plugging and strengthening pipe nipple and a sending and releasing device thereof, and particularly relates to the strengthening pipe nipple which relies on self elastic expansion to be in tight squeezing with a well wall to achieve plugging or strengthening to the well wall, and a sending and releasing device which is used for sending the strengthening pipe nipple into an oil and gas well and releasing the strengthening pipe nipple. The self-expanding type oil and gas well wall plugging and strengthening pipe nipple comprises an elastic expansion cylinder and a rubber cylinder, and the rubber cylinder is sleeved on the elastic expansion cylinder. The sending and releasing device of the self-expanding type oil and gas well wall plugging and strengthening pipe nipple comprises a central tube and a pressure bearing ball arranged inside the central tube, a pressure bearing ball seat used for the placement of the pressure bearing ball is arranged inside the central tube, an upper pretension sleeve and a lower pretension sleeve, which are matched with the elastic expansion cylinder, are arranged on the outer wall of the central tube, the upper pretension sleeve and the lower pretension sleeve are respectively connected with an upper sliding sleeve and a lower sliding sleeve through an upper positioning pin and a lower positioning pin, the upper sliding sleeve is fixed on the central tube through the upper pin, and the lower sliding sleeve is fixed on the central tube through a lower pin.
Description
Technical field
The utility model relates to the Oil/gas Well leakage stopping technology, is specifically related to a kind of self-expansion type Oil/gas Well borehole wall leak stopping and reinforces pipe nipple and send into releasing device.
Background technology
In the oil gas well drilling operation, when bore to meet leakage property stratum, when easily collapsing stratum and coal seam, the mechanical leak stopping and the well reinforcing technique that adopt at present are mainly bellows and solid expansion pipe technology.The operation technique of these two kinds of technology is all comparatively complicated.After bellows or solid expansion pipe expansion, all need to bore the hermetically-sealed construction of washing the body lower end.Simultaneously, the body of solid expansion pipe can't be realized close contact with the ground interlayer.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of elastic dilatation of himself that relies on to expand, closely push with the borehole wall, realize the reinforcing pipe nipple to leak stopping or the reinforcing of the borehole wall, and be used for reinforcing pipe nipple send into Oil/gas Well and discharged send into releasing device.
The technical solution of the utility model is: pipe nipple is reinforced in a kind of self-expansion type Oil/gas Well borehole wall leak stopping, comprises elastic expansion cylinder and rubber tube, and described rubber sleeve is contained on the elastic expansion cylinder.
The further improvement of the technical program comprises:
Described elastic expansion cylinder is the fine pith coil type spring, and the pitch range of described fine pith coil type spring is 5-50mm.
Described rubber tube is the cylinder of being made by nitrile rubber.
Described fine pith coil type spring is when the radial compression pretension, and its external diameter reduces, when the pretension binding force disappears, its external diameter returns to the compression pretension under elastic reaction before.
Another purpose of the present utility model is to provide a kind of self-expansion type Oil/gas Well borehole wall leak stopping to reinforce pipe nipple and sends into releasing device, comprises,
Central tube,
And be arranged on pressure-bearing ball in central tube,
Be provided with in described central tube be used to the pressure-bearing ball seat of placing described pressure-bearing ball, described central tube outer wall is provided with upper pre-tightening sleeve and the lower pre-tightening sleeve adaptive with the elastic expansion cylinder, described upper pre-tightening sleeve and lower pre-tightening sleeve are connected with upper sliding sleeve and low sleeve by upper alignment pin and lower alignment pin respectively, described upper sliding sleeve is fixed on central tube by upper pin, and described low sleeve is fixed on central tube by lower pin.
Also be provided with guide finger on described upper sliding sleeve, be provided with lower guide finger on described low sleeve.
The upper end of described central tube is connected with top connection, and the lower end of described central tube is connected with the guiding joint.
Also be provided with pressure transmission hole and lower pressure transmission hole on described central tube, described upper pressure transmission hole is communicated with the annular housing of upper sliding sleeve and central tube formation, and described lower pressure transmission hole is communicated with the annular housing of low sleeve and central tube formation.
Technique effect of the present utility model is: beneficial effect: 1, field operation technique is simple.The elastic expansion cylinder just can propose drilling tool after discharging.The operation that recovers well such as need not to grind, wash.2, elastic expansion cylinder elastic expansion, its external diameter can realize combining closely with the borehole wall with the well change in diameter.3, elastic expansion cylinder peripheral hardware rubber tube, the sealing that effectively solves well.4, the elastic expansion cylinder adopts the fine pith coil type spring, effectively plays the effect of supporting the borehole wall and protection rubber tube.
Description of drawings
Fig. 1 reinforces pipe nipple and sends into releasing device general structure schematic diagram.
Fig. 2 is the rubber tube structural representation.
Fig. 3 is elastic expansion nested structure schematic diagram.
In figure: 1, top connection, 2, central tube, 3, upper pin, 4, upper pressure transmission hole, 5, upper sliding sleeve, 6, upper guide finger, 7, upper alignment pin, 8, upper pre-tightening sleeve, 9, elastic expansion cylinder, 10, rubber tube, 11, lower pre-tightening sleeve, 12, lower alignment pin, 13, lower guide finger, 14, low sleeve, 15, lower pin, 16, lower pressure transmission hole, 17, the pressure-bearing ball seat, 18, ball seat pin, 19, the pressure-bearing ball, 20, the guiding joint.
The specific embodiment
as described in Figure 1, the leak stopping of a kind of self-expansion type Oil/gas Well of the utility model borehole wall is reinforced pipe nipple and is sent into releasing device, comprise, central tube 2, and be arranged on pressure-bearing ball 19 in central tube 2, be provided with in described central tube 2 be used to the pressure-bearing ball seat 17 of placing described pressure-bearing ball 19, described pressure-bearing ball seat 17 is fixing with central tube 2 by pressure-bearing pin 18, described central tube outer wall is provided with upper pre-tightening sleeve 8 and the lower pre-tightening sleeve 11 adaptive with elastic expansion cylinder 9, described upper pre-tightening sleeve 8 and lower pre-tightening sleeve 11 are connected with upper sliding sleeve 5 and low sleeve 14 by upper alignment pin 7 and lower alignment pin 12 respectively, described upper sliding sleeve 5 is fixed on central tube 2 by upper pin 3, described low sleeve 14 is fixed on central tube 2 by lower pin 15.Also be provided with guide finger 6 on described upper sliding sleeve 5, be provided with lower guide finger 13 on described low sleeve 14.The upper end of described central tube 2 is connected with top connection 1, and the lower end of described central tube 2 is connected with guiding joint 20.Also be provided with pressure transmission hole 4 and lower pressure transmission hole 16 on described central tube 2, described upper pressure transmission hole 4 is communicated with the annular housing of upper sliding sleeve 5 and central tube 2 formation, the annular housing that described lower pressure transmission hole 16 connection low sleeves 14 and central tube 2 form.
As Fig. 2,3 is described, and pipe nipple is reinforced in the leak stopping of a kind of self-expansion type Oil/gas Well of the utility model borehole wall, elastic expansion cylinder 9 and rubber tube 10, and described rubber tube 10 is sleeved on elastic expansion cylinder 9.Described elastic expansion cylinder 9 is fine pith coil type springs, and the pitch range of described fine pith coil type spring is 5-50mm.Described rubber tube 10 is cylinders of being made by nitrile rubber.Described fine pith coil type spring is when the radial compression pretension, and its external diameter reduces, when the pretension binding force disappears, its external diameter returns to the compression pretension under elastic reaction before.
When bore meeting leakage property stratum, easily collapsing stratum and coal seam need to adopt mechanical leak stopping or reinforce operation the time, first with well section reaming hole.The upper and lower good ground 1-3 rice that respectively enters of reaming hole well section.Drilling tool is proposed, to send into and discharge tubing string and be connected to the drilling tool lower end, be lowered to position corresponding to well, when input pressure-bearing ball drops on for 19 times on pressure-bearing ball seat 17, continue pressurization in tubing string and cut off pin 3 and lower pin 15, upper pre-tightening sleeve 8 and lower pre-tightening sleeve 11 move respectively up and down, discharge elastic expansion cylinder 9, rubber tube 10 fulfils assignment to contacting with borehole wall extruding.
After elastic expansion cylinder 9 pretensions shrank, be inserted in respectively in pre-tightening sleeve 8 and lower pre-tightening sleeve 11 at its two ends, and rubber tube 10 is sleeved on elastic expansion cylinder 9.Upper pre-tightening sleeve 8 is connected with low sleeve with upper sliding sleeve 5 respectively by screw thread with lower pre-tightening sleeve 11 and is connected.When the pressure-bearing ball drops on for 19 times on pressure-bearing ball seat 17, continue pressurization in tubing string and cut off pin 3 and lower pin 15, upper pre-tightening sleeve 8 and lower pre-tightening sleeve 11 move respectively up and down, discharge elastic expansion cylinder 9, rubber tube 10 is completed the release operation to contacting with borehole wall extruding.
Elastic expansion cylinder 9 is lower pitch coil type springs.When the radial compression pretension, its external diameter will reduce.When pre-tight-binding disappeared, its external diameter returns to the compression pretension under elastic reaction before, its outside rubber tube 10 that expands was to contacting with borehole wall extruding.
Above demonstration and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and manual just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. pipe nipple is reinforced in a self-expansion type Oil/gas Well borehole wall leak stopping, and it is characterized in that: comprise elastic expansion cylinder and rubber tube, described rubber sleeve is contained on the elastic expansion cylinder.
2. pipe nipple is reinforced in a kind of self-expansion type Oil/gas Well borehole wall leak stopping according to claim 1, and it is characterized in that: described elastic expansion cylinder is the fine pith coil type spring, and the pitch range of described fine pith coil type spring is 5-50mm.
3. pipe nipple is reinforced in a kind of self-expansion type Oil/gas Well borehole wall leak stopping according to claim 1, and it is characterized in that: described rubber tube is the cylinder of being made by nitrile rubber.
4. pipe nipple is reinforced in a kind of self-expansion type Oil/gas Well borehole wall leak stopping according to claim 2, it is characterized in that: described fine pith coil type spring is when the radial compression pretension, its external diameter reduces, when the pretension binding force disappears, its external diameter returns to the compression pretension under elastic reaction before.
5. a self-expansion type Oil/gas Well borehole wall leak stopping is reinforced pipe nipple and is sent into releasing device, it is characterized in that: comprise,
Central tube,
And be arranged on pressure-bearing ball in central tube,
Be provided with in described central tube be used to the pressure-bearing ball seat of placing described pressure-bearing ball, described central tube outer wall is provided with upper pre-tightening sleeve and the lower pre-tightening sleeve adaptive with the elastic expansion cylinder, described upper pre-tightening sleeve and lower pre-tightening sleeve are connected with upper sliding sleeve and low sleeve by upper alignment pin and lower alignment pin respectively, described upper sliding sleeve is fixed on central tube by upper pin, and described low sleeve is fixed on central tube by lower pin.
6. the releasing device of sending into according to claim 5, is characterized in that: also be provided with guide finger on described upper sliding sleeve, be provided with lower guide finger on described low sleeve.
7. the releasing device of sending into according to claim 5, it is characterized in that: the upper end of described central tube is connected with top connection, and the lower end of described central tube is connected with the guiding joint.
8. the releasing device of sending into according to claim 5, it is characterized in that: also be provided with pressure transmission hole and lower pressure transmission hole on described central tube, described upper pressure transmission hole is communicated with the annular housing of upper sliding sleeve and central tube formation, and described lower pressure transmission hole is communicated with the annular housing of low sleeve and central tube formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603522 CN203008846U (en) | 2012-11-16 | 2012-11-16 | Self-expanding type oil and gas well wall plugging and strengthening pipe nipple and sending and releasing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603522 CN203008846U (en) | 2012-11-16 | 2012-11-16 | Self-expanding type oil and gas well wall plugging and strengthening pipe nipple and sending and releasing device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008846U true CN203008846U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603522 Expired - Fee Related CN203008846U (en) | 2012-11-16 | 2012-11-16 | Self-expanding type oil and gas well wall plugging and strengthening pipe nipple and sending and releasing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203008846U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781481A (en) * | 2016-05-04 | 2016-07-20 | 长江大学 | Spiral packer rubber barrel with steel skeleton |
| CN110630210A (en) * | 2019-10-16 | 2019-12-31 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Loess layer leakage-proof plugging tool and use method thereof |
-
2012
- 2012-11-16 CN CN 201220603522 patent/CN203008846U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781481A (en) * | 2016-05-04 | 2016-07-20 | 长江大学 | Spiral packer rubber barrel with steel skeleton |
| CN110630210A (en) * | 2019-10-16 | 2019-12-31 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Loess layer leakage-proof plugging tool and use method thereof |
| CN110630210B (en) * | 2019-10-16 | 2023-12-01 | 中国石油天然气集团有限公司 | Leakage-proof plugging tool for yellow soil layer and using method thereof |
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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 |
Granted publication date: 20130619 Termination date: 20141116 |
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| EXPY | Termination of patent right or utility model |