CN204175204U - A kind of horizontal well injection technology pipe column centralizer - Google Patents
A kind of horizontal well injection technology pipe column centralizer Download PDFInfo
- Publication number
- CN204175204U CN204175204U CN201420608072.XU CN201420608072U CN204175204U CN 204175204 U CN204175204 U CN 204175204U CN 201420608072 U CN201420608072 U CN 201420608072U CN 204175204 U CN204175204 U CN 204175204U
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- CN
- China
- Prior art keywords
- centralizer body
- centralizer
- valve piston
- bar shaped
- ladder
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- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 230000004323 axial length Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 8
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Abstract
The utility model is a kind of horizontal well injection technology pipe column centralizer, comprises centralizer body, and the circumferencial direction of its sidewall is evenly distributed with multiple row ladder hole, and often row ladder hole arranges along the axis of centralizer body and comprises multiple ladder hole; Ladder hole is ladder macropore near one end of centralizer body outer wall, and the other end is ladder aperture; Large piston is provided with in ladder macropore; The external stability valve piston centralizer body of centralizer body, on the sidewall of valve piston centralizer body, the position of corresponding each ladder hole is equipped with open-work, is equipped with valve piston in each open-work; Valve piston lower end is sitting on large piston; The position of corresponding often row valve piston is provided with bar shaped centralizer body, and bar shaped centralizer body valve piston centralizer body outer wall of fitting is arranged, and is fixedly connected with the valve piston of respective column; Outside bar shaped centralizer body, lock ring has the garter spring of ring-type.The utility model can play reliable centralizing function to tubing string, and does not increase the task difficulty in job execution process.
Description
Technical field
The utility model relates to thick oil filling air catalytic oxidation oil recovery field, particularly relates to a kind of horizontal well injection technology pipe column centralizer.
Background technology
Because present horizontal well role in each oil field is increasing, the current comparative maturity of horizontal well in segments oil recovery technique, evenly develops oil reservoir and plays very important effect.Because horizontal section length is long, need righting, traditional centralizer mainly adopts spring centralizer, due to limited pressure, can not ensure righting effect.Although the righting of heat-sensitive type centralizer is effective, owing to being thermal production well, pit shaft cooling needs the regular hour, temperature does not drop to a certain degree centralizer and can not bounce back, and can not trip out tubing string, walks operation under impact, and easily break tubing string when lift pipe string, cause difficulty to operation.
Thus, the present inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of horizontal well injection technology pipe column centralizer, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of horizontal well injection technology pipe column centralizer, ensures the normal centralizing function of horizontal segment tubing string in oil well; And bring difficulty to oil well normal operation.
The purpose of this utility model realizes like this, a kind of horizontal well injection technology pipe column centralizer, comprise a centralizer body, described centralizer body is cylindrical tube, the circumferencial direction of centralizer body sidewall is evenly distributed with multiple row ladder hole, and often row ladder hole arranges along the axis of centralizer body and comprises multiple ladder hole; Described ladder hole is ladder macropore near one end of centralizer body outer wall, is ladder aperture near one end of centralizer body inwall; The large piston that can move axially along ladder hole is provided with in described ladder macropore; The outer, coaxial of centralizer body is sheathed is fixed with valve piston centralizer body, and on the sidewall of valve piston centralizer body, the position of corresponding each ladder hole is equipped with open-work, is equipped with the valve piston that can move axially along open-work in each open-work; The axial length of valve piston is greater than the wall thickness of valve piston centralizer body; In the position of each row ladder hole corresponding, have gap between centralizer body outer wall and valve piston centralizer body inwall, large piston can outwards move in described gap; The lower end of valve piston to reach in described gap and is sitting on large piston; The position of corresponding often row valve piston is provided with bar shaped centralizer body, and bar shaped centralizer body valve piston centralizer body outer wall of fitting is arranged, and each bar shaped centralizer body is fixedly connected with the valve piston of its respective column; The upper end of centralizer body is sheathed is fixed with pressure cap, and described pressure cap is extended with stopper section downwards, bar shaped centralizer body upper end to extend in stopper section and with stopper section inside keep certain interval; Outside bar shaped centralizer body, lock ring has the garter spring of ring-type.
In a better embodiment of the present utility model, on the outer wall of centralizer body, the position of corresponding often row ladder hole is provided with axial notch, forms described gap between axial notch and valve piston centralizer body inwall; One end of large piston flushes with the groove bottom of described axial notch, and the large piston other end is sitting in the step shoulder of ladder macropore.
In a better embodiment of the present utility model, the outer wall between centralizer body top and bottom is provided with reducing diameter part, and described often row ladder hole is all positioned at reducing diameter part, forms described gap between reducing diameter part and valve piston centralizer body inwall; One end of large piston flushes with described reducing diameter part surface, and the large piston other end is sitting in the step shoulder of ladder macropore.
In a better embodiment of the present utility model, centralizer body upper end is fixedly connected with pressure cap, valve piston centralizer body upper end by shear pin; Centralizer body lower end is fixedly connected with valve piston centralizer body lower end with bar shaped centralizer body lower end by shear pin.
In a better embodiment of the present utility model, bar shaped centralizer body is fixedly connected with by tightening pin with the valve piston of respective column.
In a better embodiment of the present utility model, between large piston and large shoulder hole, between valve piston and open-work, be equipped with sealing ring.
In a better embodiment of the present utility model, the circumferencial direction of centralizer body sidewall is evenly distributed with four row ladder holes, and often row ladder hole arranges along the axis of centralizer body and comprises four ladder holes.
In a better embodiment of the present utility model, the top of valve piston centralizer body is small cylinder, and bottom is large cylinder, and the excessive section between large cylinder and small cylinder is circular cone stage body; Described valve piston and open-work are all positioned at the large cylinder part of valve piston centralizer body; The upper end of described bar shaped centralizer body againsts the surface of circular cone stage body and the surface setting of small cylinder, and extend in the stopper section of pressure cap.
In a better embodiment of the present utility model, garter spring is provided with five, is evenly distributed on outside bar shaped centralizer body vertically, and described bar shaped centralizer body is provided with corresponding groove, and garter spring is positioned at groove.
In a better embodiment of the present utility model, garter spring is end to end cylindrical helical extension spring.
From the above mentioned, the utility model can ensure the tubing string centralizing function in the normal gas injection of horizontal well (vapour) process, to ensure that other technological measure realizes normally, but does not increase the task difficulty in job execution process.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the utility model and explain, does not limit scope of the present utility model.Wherein:
Fig. 1: be the utility model horizontal well injection technology pipe column centralizer structural representation.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model is described.
As shown in Figure 1, the utility model provides a kind of horizontal well injection technology pipe column centralizer 100, is applicable to carry out righting to tubing string in the confined space, can be used in horizontal well and also can be used on straight well, bring guarantee to other technological measure normal construction.This centralizer 100 comprises a centralizer body 1, centralizer body 1 is cylindrical tube, its inside has channel space, be evenly distributed with multiple row ladder hole 2 at the circumferencial direction of centralizer body 1 sidewall, often row ladder hole 2 arranges along the axis of centralizer body 1 and comprises multiple ladder hole 2; In the present embodiment, adopt four row ladder holes 2, often row ladder hole 2 comprises four ladder holes 2.Ladder hole 2 is ladder macropore near one end of centralizer body 1 outer wall, is ladder aperture near one end of centralizer body 1 inwall; The large piston 3 that can move axially along ladder hole 2 is provided with in ladder macropore; The outer, coaxial of centralizer body 1 is sheathed is fixed with valve piston centralizer body 4, and valve piston centralizer body 4 is socket type parts; Concrete, the top of valve piston centralizer body 4 is small cylinder, and bottom is large cylinder, and the excessive section between large cylinder and small cylinder is circular cone stage body.On the sidewall of valve piston centralizer body 4, the position of corresponding each ladder hole 2 is equipped with open-work 41, is equipped with the valve piston 5 that can move axially along open-work 41 in each open-work 41, and open-work 41 and valve piston 5 are all positioned at the large cylinder part of valve piston centralizer body 4; The axial length of valve piston 5 is greater than the wall thickness of valve piston centralizer body 4; In the position of each row ladder hole 2 corresponding, have gap 6 between the outer wall of centralizer body 1 and the inwall of valve piston centralizer body 4, large piston 3 can outwards move in gap 6; The lower end of valve piston 5 to reach in gap 6 and is sitting on large piston 3, thus the upper end of valve piston 5 flushes with the outer wall of valve piston centralizer body 4; The position of corresponding often row valve piston 5 is provided with bar shaped centralizer body 7, and bar shaped centralizer body 7 is elastic component, can produce elastic deformation.Bar shaped centralizer body 7 valve piston centralizer body 4 outer wall of fitting is arranged, and each bar shaped centralizer body 7 is fixedly connected with the valve piston 5 of its respective column; The upper end of centralizer body 1 is sheathed is fixed with pressure cap 8, pressure cap 8 is extended with stopper section 81 downwards, this stopper section 81 is the annular protrusion that pressure cap 8 stretches out downwards, the surface on surface and small cylinder that the upper end of bar shaped centralizer body 7 againsts circular cone stage body is arranged, and in the stopper section 81 extending into pressure cap 8 and with stopper section 81 inside keep certain interval; Like this while stopper section 81 with formation gap, bar shaped centralizer body 7 upper end, the external diameter of pressure cap 8 can be made consistent with the external surface of bar shaped centralizer body 7, thus make whole centralizer have consistent external diameter.Outside bar shaped centralizer body 7, lock ring has the garter spring 9 of ring-type.
The upper and lower side of centralizer body 1 is equipped with external screw thread, and centralizer body 1 threaded upper ends connects top connection 14, is connected with tubing string by top connection 14.After arriving horizontal well horizontal segment completion under this pipe column centralizer 100 is with steam injection string, steam builds the pressure in the wellbore, steam is full of in the channel space of centralizer body 1 inside, under the effect of internal vapor pressure, large piston 3 is pushed outwards dynamic, large piston 3 promotes valve piston 5 outwards movement simultaneously, drives bar shaped centralizer body 7 outwards to expand, and stopper section 81 can limit the distance of the outside movement of bar shaped centralizer body 7.When large piston 3 upper end contacts with valve piston centralizer body 4, bar shaped centralizer body 7 is near shaft in wall, and in the ever-increasing situation of internal vapor pressure, righting effect is more firm.When needs trip out tubing string, perfect condition is when stopping steam injection, and along with the disappearance of internal pressure, under the effect of bar shaped centralizer body 7 own resilience and garter spring 9, large piston 3 and valve piston 5 get back to initial position, and bar shaped centralizer body 7 reclaims and trips out tubing string.
Further, on the outer wall of centralizer body 1, the position of corresponding often row ladder hole 2 is provided with axial notch, forms gap 6 between axial notch and valve piston centralizer body 4 inwall; Large one end of piston 3 flushes with the groove bottom of axial notch, and large piston 3 other end is sitting in the step shoulder of ladder macropore.Or the outer wall between centralizer body 1 top and bottom is provided with reducing diameter part, and often row ladder hole 2 is all positioned at reducing diameter part, between reducing diameter part and valve piston centralizer body 4 inwall, form gap 6; One end of large piston 3 flushes with reducing diameter part surface, and large piston 3 other end is sitting in the step shoulder of ladder macropore.
Further, centralizer body 1 upper end is fixedly connected with pressure cap 8, valve piston centralizer body 4 upper end by shear pin 10; Centralizer body 1 lower end is fixedly connected with valve piston centralizer body 4 lower end with bar shaped centralizer body 7 lower end by shear pin 11.Because when tripping out tubing string, normal conditions are that large piston 3 and valve piston 5 can not get back to original state, so bar shaped centralizer body 7 all the time and the power that has certain effect between shaft in wall exist, therefore during lift pipe string, bar shaped centralizer body is relatively motionless, now upper propose the effect of active force under, shear pin 10 and shear pin 11 are all cut off, when centralizer body 1 is with after tubing string being put forward a bit of distance, large piston 3 staggers mutually due to relative motion with valve piston 5, now because the resistance of valve piston 5 return disappears, valve piston is sitting in for 5 times on centralizer body 1, thus bar shaped centralizer body 7 reclaims, now tubing string can smoothly on carry, until propose whole tubing string.
Further, bar shaped centralizer body 7 is fixedly connected with by tightening pin 12 with the valve piston 5 of respective column; Between large piston 3 and ladder macropore, between valve piston 5 and open-work 41, be equipped with sealing ring 13; One end of the corresponding ladder aperture of large piston 3 is provided with blind hole 31.Garter spring 9 is end to end cylindrical helical extension spring, is provided with five garter springs 9 altogether, is evenly distributed on outside bar shaped centralizer body 7 vertically, and bar shaped centralizer body 7 is provided with corresponding groove, and garter spring 9 is positioned at groove.
As can be seen from above embodiment, the utility model can ensure the tubing string centralizing function in the normal oily vapour process of horizontal well, to ensure that other technological measure realizes normally, but does not increase the task difficulty in job execution process.
The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (10)
1. a horizontal well injection technology pipe column centralizer, comprise a centralizer body, it is characterized in that: described centralizer body is cylindrical tube, the circumferencial direction of centralizer body sidewall is evenly distributed with multiple row ladder hole, and often row ladder hole arranges along the axis of centralizer body and comprises multiple ladder hole; Described ladder hole is ladder macropore near one end of centralizer body outer wall, is ladder aperture near one end of centralizer body inwall; The large piston that can move axially along ladder hole is provided with in described ladder macropore; The outer, coaxial of centralizer body is sheathed is fixed with valve piston centralizer body, and on the sidewall of valve piston centralizer body, the position of corresponding each ladder hole is equipped with open-work, is equipped with the valve piston that can move axially along open-work in each open-work; The axial length of valve piston is greater than the wall thickness of valve piston centralizer body; In the position of each row ladder hole corresponding, have gap between centralizer body outer wall and valve piston centralizer body inwall, large piston can outwards move in described gap; The lower end of valve piston to reach in described gap and is sitting on large piston; The position of corresponding often row valve piston is provided with bar shaped centralizer body, and bar shaped centralizer body valve piston centralizer body outer wall of fitting is arranged, and each bar shaped centralizer body is fixedly connected with the valve piston of its respective column; The upper end of centralizer body is sheathed is fixed with pressure cap, and described pressure cap is extended with stopper section downwards, bar shaped centralizer body upper end to extend in stopper section and with stopper section inside keep certain interval; Outside bar shaped centralizer body, lock ring has the garter spring of ring-type.
2. horizontal well injection technology pipe column centralizer as claimed in claim 1, is characterized in that: on the outer wall of described centralizer body, the position of corresponding often row ladder hole is provided with axial notch, forms described gap between axial notch and valve piston centralizer body inwall; One end of large piston flushes with the groove bottom of described axial notch, and the large piston other end is sitting in the step shoulder of ladder macropore.
3. horizontal well injection technology pipe column centralizer as claimed in claim 1, it is characterized in that: the outer wall between described centralizer body top and bottom is provided with reducing diameter part, described often row ladder hole is all positioned at reducing diameter part, forms described gap between reducing diameter part and valve piston centralizer body inwall; One end of large piston flushes with described reducing diameter part surface, and the large piston other end is sitting in the step shoulder of ladder macropore.
4. horizontal well injection technology pipe column centralizer as claimed in claim 2 or claim 3, is characterized in that: described centralizer body upper end is fixedly connected with pressure cap, valve piston centralizer body upper end by shear pin; Centralizer body lower end is fixedly connected with valve piston centralizer body lower end with bar shaped centralizer body lower end by shear pin.
5. horizontal well injection technology pipe column centralizer as claimed in claim 4, is characterized in that: described bar shaped centralizer body is fixedly connected with by tightening pin with the valve piston of respective column.
6. horizontal well injection technology pipe column centralizer as claimed in claim 5, is characterized in that: between described large piston and large shoulder hole, be equipped with sealing ring between valve piston and open-work.
7. horizontal well injection technology pipe column centralizer as claimed in claim 6, it is characterized in that: the circumferencial direction of described centralizer body sidewall is evenly distributed with four row ladder holes, often row ladder hole arranges along the axis of centralizer body and comprises four ladder holes.
8. horizontal well injection technology pipe column centralizer as claimed in claim 7, is characterized in that: the top of described valve piston centralizer body is small cylinder, and bottom is large cylinder, and the excessive section between large cylinder and small cylinder is circular cone stage body; Described valve piston and open-work are all positioned at the large cylinder part of valve piston centralizer body; The upper end of described bar shaped centralizer body againsts the surface of circular cone stage body and the surface setting of small cylinder, and extend in the stopper section of pressure cap.
9. horizontal well injection technology pipe column centralizer as claimed in claim 8, is characterized in that: described garter spring is provided with five, is evenly distributed on outside bar shaped centralizer body vertically, and described bar shaped centralizer body is provided with corresponding groove, and garter spring is positioned at groove.
10. horizontal well injection technology pipe column centralizer as claimed in claim 1, is characterized in that: described garter spring is end to end cylindrical helical extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608072.XU CN204175204U (en) | 2014-10-21 | 2014-10-21 | A kind of horizontal well injection technology pipe column centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608072.XU CN204175204U (en) | 2014-10-21 | 2014-10-21 | A kind of horizontal well injection technology pipe column centralizer |
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| Publication Number | Publication Date |
|---|---|
| CN204175204U true CN204175204U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420608072.XU Expired - Fee Related CN204175204U (en) | 2014-10-21 | 2014-10-21 | A kind of horizontal well injection technology pipe column centralizer |
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| CN (1) | CN204175204U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505533A (en) * | 2018-12-10 | 2019-03-22 | 盐城庆隆机械有限公司 | A kind of novel hydraulic elastic centralizer |
-
2014
- 2014-10-21 CN CN201420608072.XU patent/CN204175204U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505533A (en) * | 2018-12-10 | 2019-03-22 | 盐城庆隆机械有限公司 | A kind of novel hydraulic elastic centralizer |
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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: 20150225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |