CN203559806U - Hydraulic connecting rod type casing centralizer - Google Patents
Hydraulic connecting rod type casing centralizer Download PDFInfo
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- CN203559806U CN203559806U CN201320741594.2U CN201320741594U CN203559806U CN 203559806 U CN203559806 U CN 203559806U CN 201320741594 U CN201320741594 U CN 201320741594U CN 203559806 U CN203559806 U CN 203559806U
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- connecting rod
- unsteady
- connector
- lower contact
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Abstract
The utility model discloses a hydraulic connecting rod type casing centralizer. The hydraulic connecting rod type casing centralizer comprises an upper connector, a lower connector, a floating connecting rod connector, a jacket and a centralizing block, wherein the upper connector is connected with the lower connector, a liquid inlet is formed in the lower connector, a shear pin groove connector is fixedly connected to the upper connector and is connected with the jacket through a constant-pressure shear pin, the jacket is fixedly connected with the floating connecting rod connector, the floating connecting rod connector is connected with a floating connecting rod, a static connecting rod is connected to the lower connector, a sliding component which pushes the floating connecting rod to move downwards is formed by the jacket and the floating connecting rod connector, the floating connecting rod and the static connecting rod are both connected with the centralizing block, and the floating connecting rod and the static connecting rod rotate outwards to push the centralizing block to move outwards when the floating connecting rod moves downwards. According to the hydraulic connecting rod type casing centralizer, the linear motion of the sliding part is changed into rotational motion of the connecting rod, and thus the centralizing block is pushed out; meanwhile, self-locking can be achieved, and the centralizing block is prevented from retreating after stretching out.
Description
Technical field
The utility model relates to a kind of hydraulic connecting rod formula casing stabbing board, belongs to horizontal well setting of casing and well cementing operation instrument, and the sleeve pipe that makes to connect is thereon placed in the middle in pit shaft, improves cementing quality.
Background technology
Horizontal well development has become the main flow of current oil and gas development.The cementing quality of horizontal well is being related to the success or failure of later stage pressing crack construction and formation testing gas testing.Yet one of principal element that affects horizontal cementing quality is that the sleeve pipe of horizontal segment is not placed in the middle.In casing job, generally adopt at present rigid centralizer for casing, spring centralizer etc.For example, China Patent No. " 03211935.6 " discloses a kind of well drilling and cementing hydraulic rigid centralising device, open day is on 03 03rd, 2004, it is connecting hydraulic cylinder by top connection, between top connection and hydraulic cylinder, there is an elongated slot, limited location cover in groove, central tube is arranged at top connection bottom, the cone of fluid cylinder lower end and centrilizing tile link, centrilizing tile has pin to be fixed wtih hydraulic cylinder and watt seat, when during well cementation, in pipe, the pressure of replacement concrete column acquires a certain degree, cut off shear pin, stop promotes centrilizing tile distending, hole diameter is interval thus strengthens and makes centrilizing tile press close to the bore hole borehole wall, bunch tube is forced placed in the middle.
But existing rigid centralizer for casing and spring centralizer also exist respectively following not enough: smooth when guaranteeing lower tubular column, the maximum outside diameter of rigid centralizer is often all gapped than the borehole wall, spring centralizer is because shell fragment elastic force can not overcome sleeve pipe deadweight completely, so can not well play the effect of righting to sleeve pipe, often cause well cementation defect.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that existing casing stabbing board exists, and a kind of hydraulic connecting rod formula casing stabbing board is provided.The utility model converts the rectilinear motion of slide unit to connecting rod rotatablely move, thereby wiper block is released, and can realize self-locking simultaneously, retracts after avoiding wiper block to stretch out again.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of hydraulic connecting rod formula casing stabbing board, it is characterized in that: comprise top connection, lower contact, unsteady linkage connector, sheath and wiper block, described top connection is connected with lower contact, in lower contact, be provided with inlet opening, in top connection, be fixedly connected with shear pin trough connection, shear pin trough connection is connected by level pressure shear pin with sheath, and sheath is fixedly connected with unsteady linkage connector; Unsteady linkage connector is connected with unsteady connecting rod, is connected with quiet connecting rod in lower contact, and sheath and unsteady linkage connector form the slide unit that the unsteady connecting rod of promotion moves downward; The connecting rod that floats is connected with wiper block respectively with quiet connecting rod, and when unsteady connecting rod moves downward, float connecting rod and quiet connecting rod, to inner rotary, promote wiper block and outwards move.
The utility model also comprises self-locking mechanism, described self-locking mechanism comprises the self-locking jump ring being arranged in top connection and is arranged on the limited step coordinating with self-locking jump ring on sheath, extrapolated when the maximum outside diameter when wiper block, self-locking jump ring coordinates formation self-locking with limited step.
After being connected with lower contact, described top connection passes through the locking connection of check pin.
Described unsteady linkage connector is provided with the connecting rod mounting groove of four circumference uniform distributions, and is connected with unsteady connecting rod by the axle of having strong market potential.
In described lower contact, be provided with the connecting rod mounting groove of four circumference uniform distributions, by having strong market potential, axle is connected with quiet connecting rod.
Described unsteady connecting rod is connected with wiper block respectively by short pin shaft with quiet connecting rod.
The axle center of having strong market potential that the axle of having strong market potential that described unsteady linkage connector is connected with unsteady connecting rod is connected with quiet connecting rod with lower contact is equal, and short pin shaft center exceeds two axle centers of having strong market potential.
Employing the utility model has the advantage of:
One, in the utility model, described top connection is connected with lower contact, is provided with inlet opening in lower contact, is fixedly connected with shear pin trough connection in top connection, and shear pin trough connection is connected by level pressure shear pin with sheath, and sheath is fixedly connected with unsteady linkage connector; Unsteady linkage connector is connected with unsteady connecting rod, is connected with quiet connecting rod in lower contact, and sheath and unsteady linkage connector form the slide unit that the unsteady connecting rod of promotion moves downward; The connecting rod that floats is connected with wiper block respectively with quiet connecting rod, when unsteady connecting rod moves downward, float connecting rod and quiet connecting rod, to inner rotary, promote wiper block and outwards move, adopt this structure, convert the rectilinear motion of slide unit to connecting rod rotatablely move, thereby wiper block released, can be suitable reduce Frictional Drag of Casing Running, breakdown action is flexible, employing hydraulic pressure is placed in the middle, and uprighting force is large, and righting is effective.
Two, the utility model also comprises self-locking mechanism, described self-locking mechanism comprises the self-locking jump ring being arranged in top connection and is arranged on the limited step coordinating with self-locking jump ring on sheath, when wiper block extrapolated when the maximum outside diameter, self-locking jump ring coordinates formation self-locking with limited step, adopt this structure, form mechanical self-locking device, guarantee no longer to retract after wiper block stretches out, greatly improved the security reliability of downhole tool.
Three, in the utility model, after described top connection is connected with lower contact, by the locking connection of check pin, further guaranteed the reliability that top connection is connected with lower contact, prevented from becoming flexible.
Four, in the utility model, described unsteady linkage connector is provided with the connecting rod mounting groove of four circumference uniform distributions, and is connected with unsteady connecting rod by the axle of having strong market potential, and makes it possible to simultaneously four wiper blocks to release, and uprighting force is large and can be uniformly distributed.
Five, in the utility model, in described lower contact, be provided with the connecting rod mounting groove of four circumference uniform distributions, by the axle of having strong market potential, be connected with quiet connecting rod, coordinate with unsteady connecting rod, guarantee four wiper blocks to be released simultaneously.
Six, in the utility model, described unsteady connecting rod is connected with wiper block respectively by short pin shaft with quiet connecting rod, and the mode that adopts the axle of having strong market potential to be connected with short pin shaft has guaranteed the reliability of link motion.
Seven, in the utility model, the axle center of having strong market potential that the axle of having strong market potential that described unsteady linkage connector is connected with unsteady connecting rod is connected with quiet connecting rod with lower contact is equal, short pin shaft center exceeds two axle centers of having strong market potential, give connecting rod to movement tendency of inner rotary, thereby the rectilinear motion of realizing slide unit convert rotatablely moving of connecting rod to.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation
In figure, be labeled as: 1, top connection; 2, shear pin trough connection; 3, level pressure shear pin; 4, self-locking jump ring; 5, O RunddichtringO; 6, sheath; 7, check pin; 8, inlet opening; 9, limited step; 10, unsteady linkage connector; 11, the axle of having strong market potential; 12, short pin shaft; 13, wiper block; 14, unsteady connecting rod; 15, quiet connecting rod; 16, lower contact.
The specific embodiment
A kind of hydraulic connecting rod formula casing stabbing board, comprise top connection 1, lower contact 16, unsteady linkage connector 10, sheath 6 and wiper block 13, described top connection 1 is connected with lower contact 16, in lower contact 16, be provided with inlet opening 8, in top connection 1, be fixedly connected with shear pin trough connection 2, shear pin trough connection 2 is connected by level pressure shear pin 3 with sheath 6, and sheath 6 is fixedly connected with unsteady linkage connector 10; The linkage connector 10 that floats is connected with the connecting rod 14 that floats, and is connected with quiet connecting rod 15 in lower contact 16, and sheath 6 and unsteady linkage connector 10 form the slide unit that the unsteady connecting rod 14 of promotion moves downward; The connecting rod 14 that floats is connected with wiper block 13 respectively with quiet connecting rod 15, and when unsteady connecting rod 14 moves downward, float connecting rod 14 and quiet connecting rod 15, to inner rotary, promote wiper block 13 and outwards move.
The utility model also comprises self-locking mechanism, described self-locking mechanism comprises the self-locking jump ring 4 being arranged in top connection 1 and is arranged on the limited step 9 coordinating with self-locking jump ring 4 on sheath 6, extrapolated when the maximum outside diameter when wiper block 13, self-locking jump ring 4 coordinates formation self-locking with limited step 9.
In the utility model, after being connected with lower contact 16, described top connection 1 passes through the locking connection of check pin 7.
In the utility model, described unsteady linkage connector 10 is provided with the connecting rod mounting groove of four circumference uniform distributions, and is connected with unsteady connecting rod 14 by the axle 11 of having strong market potential.
In the utility model, be provided with the connecting rod mounting groove of four circumference uniform distributions in described lower contact 16, by having strong market potential, axle 11 is connected with quiet connecting rod 15.
In the utility model, described unsteady connecting rod 14 is connected with wiper block 13 respectively by short pin shaft 12 with quiet connecting rod 15.
In the utility model, the axle of having strong market potential that described unsteady linkage connector 10 is connected with unsteady connecting rod 14 is equal with the axle center of having strong market potential that lower contact 16 is connected with quiet connecting rod 15, and short pin shaft 12 centers exceed two Zhou centers of having strong market potential.
When instrument inside and outside differential pressure reaches cutting off after force value of level pressure shear pin, level pressure shear pin is cut off; The slide unit that sheath 6 and unsteady linkage connector 10 form moves downward; Because the short pin shaft center in the middle of connecting rod is higher than the Zhou center of having strong market potential, both sides, so connecting rod exists the movement tendency to inner rotary; When the unsteady connecting rod 14 of slide unit promotion moves downward, connecting rod 14 and quiet connecting rod 15 rotation laterally simultaneously of floating, by wiper block 13 releases; Maximum outside diameter reaches after design size, and self-locking jump ring 4 forms self-locking with the limited step 9 of sheath 6, prevents the retraction of wiper block 13.
It is consistent with the sleeve pipe being lowered to that the utility model two ends connect button-type, in casing job, according to design, every some sleeve pipes, adds a set of hydraulic connecting rod formula casing stabbing board.Before well cementation, build the pressure in well, the design that reaches wiper block is stretched out after pressure, and level pressure shear pin is cut off, and wiper block stretches out, and can realize self-locking simultaneously, retracts after avoiding wiper block to stretch out again.In order to ensure the righting effect of centralizer, suggestion voltage stabilizing 15 minutes, voltage stabilizing value must not be cut off pressure lower than level pressure shear pin, guarantees cementing quality.
A hydraulic connecting rod formula casing stabbing board, comprises top connection 1, shear pin trough connection 2, level pressure shear pin 3, self-locking jump ring 4, sheath 6, check pin 7, the linkage connector 10 that floats, the axle 11 of having strong market potential, short pin shaft 12, wiper block 13, unsteady connecting rod 14, quiet connecting rod 15, lower contact 16, O RunddichtringO 5.It is locking with check pin 7 after top connection 1 is connected with the lower contact 16 that is provided with inlet opening 8; Shear pin trough connection 2 is fixed in top connection 1, and and sheath 6 between with level pressure shear pin 3, connect; The linkage connector 10 that floats is provided with the connecting rod mounting groove of four circumference uniform distributions, and is connected with unsteady connecting rod 14 by the axle 11 of having strong market potential; Lower contact 16 also has the connecting rod mounting groove of four circumference uniform distributions, and by having strong market potential, axle 11 is connected with quiet connecting rod 15; The connecting rod 14 that floats is connected by short pin shaft 12 with quiet connecting rod 15 and wiper block 13; The linkage connector 10 that floats is connected as slide unit with sheath 6, promotes link motion.
In the present embodiment, two group leader's bearing pin centers are equal, and short pin shaft center exceeds several millimeters of axle center of having strong market potential, and gives connecting rod to movement tendency of inner rotary.
Operating principle of the present utility model is, highly pressurised liquid enters from the inlet opening 8 of lower contact 16, and when instrument inside and outside differential pressure reaches cutting off after force value of level pressure shear pin 3, level pressure shear pin 3 is cut off; The slide unit that sheath 6 and unsteady linkage connector 10 form moves downward, and when the unsteady connecting rod 14 of slide unit promotion moves downward, connecting rod 14 and quiet connecting rod 15 rotation laterally simultaneously of floating, by wiper block 13 releases; Maximum outside diameter reaches after design size, and self-locking jump ring 4 forms self-locking with the limited step of sheath 6, prevents the retraction of wiper block 13.
Claims (7)
1. a hydraulic connecting rod formula casing stabbing board, it is characterized in that: comprise top connection (1), lower contact (16), unsteady linkage connector (10), sheath (6) and wiper block (13), described top connection (1) is connected with lower contact (16), in lower contact (16), be provided with inlet opening (8), in top connection (1), be fixedly connected with shear pin trough connection (2), shear pin trough connection (2) is connected by level pressure shear pin (3) with sheath (6), and sheath (6) is fixedly connected with unsteady linkage connector (10); The linkage connector (10) that floats is connected with unsteady connecting rod (14), is connected with quiet connecting rod (15) in lower contact (16), and sheath (6) and unsteady linkage connector (10) form the slide unit that the unsteady connecting rod (14) of promotion moves downward; The connecting rod (14) that floats is connected with wiper block (13) respectively with quiet connecting rod (15), and when unsteady connecting rod (14) moves downward, float connecting rod (14) and quiet connecting rod (15), to inner rotary, promote wiper block (13) and outwards move.
2. hydraulic connecting rod formula casing stabbing board according to claim 1, it is characterized in that: also comprise self-locking mechanism, described self-locking mechanism comprises the self-locking jump ring (4) being arranged in top connection (1) and is arranged on the upper limited step (9) coordinating with self-locking jump ring (4) of sheath (6), extrapolated when the maximum outside diameter when wiper block (13), self-locking jump ring (4) coordinates formation self-locking with limited step (9).
3. hydraulic connecting rod formula casing stabbing board according to claim 1 and 2, is characterized in that: after described top connection (1) is connected with lower contact (16), pass through the locking connection of check pin (7).
4. hydraulic connecting rod formula casing stabbing board according to claim 1 and 2, is characterized in that: described unsteady linkage connector (10) is provided with the connecting rod mounting groove of four circumference uniform distributions, and is connected with unsteady connecting rod (14) by the axle of having strong market potential (11).
5. hydraulic connecting rod formula casing stabbing board according to claim 4, is characterized in that: in described lower contact (16), be provided with the connecting rod mounting groove of four circumference uniform distributions, by the axle of having strong market potential (11), be connected with quiet connecting rod (15).
6. hydraulic connecting rod formula casing stabbing board according to claim 5, is characterized in that: described unsteady connecting rod (14) is connected with wiper block (13) respectively by short pin shaft (12) with quiet connecting rod (15).
7. hydraulic connecting rod formula casing stabbing board according to claim 6, it is characterized in that: the axle of having strong market potential that described unsteady linkage connector (10) is connected with unsteady connecting rod (14) is equal with the axle center of having strong market potential that lower contact (16) is connected with quiet connecting rod (15), and short pin shaft (12) center exceeds two axle centers of having strong market potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741594.2U CN203559806U (en) | 2013-11-22 | 2013-11-22 | Hydraulic connecting rod type casing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320741594.2U CN203559806U (en) | 2013-11-22 | 2013-11-22 | Hydraulic connecting rod type casing centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203559806U true CN203559806U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320741594.2U Expired - Fee Related CN203559806U (en) | 2013-11-22 | 2013-11-22 | Hydraulic connecting rod type casing centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203559806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796691A (en) * | 2021-04-16 | 2021-05-14 | 斯伦贝谢油田技术（山东）有限公司 | Underground pressure balancing device |
-
2013
- 2013-11-22 CN CN201320741594.2U patent/CN203559806U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796691A (en) * | 2021-04-16 | 2021-05-14 | 斯伦贝谢油田技术（山东）有限公司 | Underground pressure balancing device |
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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: 20140423 Termination date: 20171122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |