CN111927344B - Double-petal jacking type sucker rod workover power slip and operation process - Google Patents
Double-petal jacking type sucker rod workover power slip and operation process Download PDFInfo
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- CN111927344B CN111927344B CN202011093257.8A CN202011093257A CN111927344B CN 111927344 B CN111927344 B CN 111927344B CN 202011093257 A CN202011093257 A CN 202011093257A CN 111927344 B CN111927344 B CN 111927344B
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- sucker rod
- groups
- rod clamping
- power slip
- box body
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
Abstract
The invention relates to the technical field of workover sucker rod auxiliary devices and workover processes, in particular to a double-petal jacking type sucker rod workover power slip and a workover process. The technical scheme is as follows: the pneumatic cylinder is installed in proper order from bottom to top to the power slips box, the connecting rod, the sucker rod adds holds the unit, and the pneumatic cylinder divides two sets of front and back symmetric positions that are located the slips box inside respectively, the upper end of pneumatic cylinder piston is connected to the bottom that two sets of sucker rods added held the unit through two sets of connecting rods respectively, the outer wall that the sucker rod added held the unit is equipped with the guide rail, the inner wall of power slips box is narrow structure about the width, the inner wall is equipped with the guide rail groove, make the sucker rod add the unit that holds reciprocate along the guide rail groove of the inner wall of power slips box, the sucker rod adds forms the cylindrical groove after holding the unit. The beneficial effects are that: the invention is applied together with the elevator for oil well workover, can improve the efficiency of workover operation, and further realize the automation of workover operation.
Description
Technical Field
The invention relates to the technical field of workover sucker rod auxiliary devices and workover processes, in particular to a double-petal jacking type sucker rod workover power slip and a workover process.
Background
The traditional workover operation mode is mainly manual, and after the sucker rod needs to be manually centered, the sucker rod slips are clamped and rotationally locked to support the whole operation activity, and along with the lifting of the sucker rod by the workover hook, the whole sucker rod operation activity is completed, so that the problems of more occupied workers, high labor intensity, poor outdoor construction environment, high safety risk and the like exist, and the sucker rod operation is more prominent. The clamping requirement of the sucker rod is high, the flange surface for clamping the flange of the sucker rod must be a complete flange surface when clamping, and the two semi-flange surfaces must be on the same plane when working, otherwise, safety accidents can occur. In order to solve these problems, it is important to design a clamping mechanism for sucker rod that can make the flange face on the same plane.
Realize the centre gripping of sucker rod and need solve key problem and lie in: firstly, when the automatic slips tighten the sucker rod, the sucker rod clamping units are on the same plane, so that two sucker rod clamping units are stressed at the same time, and safety accidents caused by the fact that only one sucker rod clamping unit is stressed are avoided; and secondly, the automatic slips can be opened to enable the sucker rod to enter and be clamped in a clamping state to complete the clamping action of the sucker rod, so that the automatic function of workover in the aspect of clamping the sucker rod is realized.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a power slip for workover operation of a double-petal jacking type sucker rod and an operation process, which can realize the holding of the sucker rod and improve the efficiency of workover operation.
The invention provides a power slip for workover treatment of a bivalve jacking type sucker rod, which adopts the technical scheme that: comprises a sucker rod clamping unit, a power slip box body, a connecting rod and a hydraulic cylinder, wherein the power slip box body is sequentially provided with the hydraulic cylinder, the connecting rod and the sucker rod clamping unit from bottom to top, the hydraulic cylinders are divided into two groups and are respectively positioned at the front and back symmetrical positions in the power slip box body, the hydraulic cylinders comprise hydraulic cylinder pistons and hydraulic cylinder bodies, the upper end of the hydraulic cylinder piston is respectively connected to the bottoms of the two groups of sucker rod clamping units through two groups of connecting rods, the outer wall of the sucker rod clamping unit is provided with a guide rail, the inner wall of the power slip box body is a supporting surface structure with a wide upper part and a narrow lower part, and the inner wall is provided with a guide rail groove, so that the two groups of sucker rod clamping units move up and down along the guide rail groove on the inner wall of the power slip box body, the middle part of the sucker rod clamping units is provided with a semi-cylindrical groove, the two groups of sucker rod clamping units can form a cylindrical groove after being combined, and the two groups of sucker rod clamping units clamp the sucker rods when moving downwards.
Preferably, foretell sucker rod adds holds the unit and is equipped with follow-up sealing device, follow-up sealing device's one end connect the sucker rod with hold the lower terminal surface of unit, the other end is connected the sucker rod with the upper end of holding the unit holding surface, it is whole scalable, when the sucker rod adds the unit and removes with the sucker rod adds the unit, follow-up sealing device can prevent that dust debris from getting into the guide rail groove, and then guarantees the sucker rod and adds the unit motion precision, finally guarantees that two sucker rod add the unit and is in the coplanar when adding the sucker rod.
Preferably, the middle parts of the upper surfaces of the two groups of sucker rod clamping units form a boss together, and a wrench of the sucker rod can be clamped in a flange inside the boss, so that the working distance between the elevator and the power slip is increased.
Preferably, the hydraulic cylinders are divided into two groups and positioned at two sides of the power slip box body, and the two groups of hydraulic cylinders can simultaneously push the two groups of sucker rod clamping units to move along the supporting surface in the power slip box body when being pressurized; if one group of hydraulic cylinders is not pressurized, the other group of hydraulic cylinders can also complete the action of pushing the sucker rod clamping unit.
Preferably, the cross section of the power slip box body is of a hexagonal structure, and guide rail grooves are respectively formed in two sides of the power slip box body and are used for being movably matched with the sucker rod clamping unit; dovetail grooves are respectively formed in the front and the back of the power slip box body and are used for being matched with the hydraulic cylinder piston in a moving mode, and the hydraulic cylinder piston can move up and down along the dovetail grooves.
Preferably, the bottom surface of the sucker rod clamping unit is of an inclined surface structure, and the bottom surface and the inner wall of the power slip box body are in a mutually perpendicular relationship.
The invention provides an operation process of a power slip for workover operation of a bivalve jacking type sucker rod, which comprises the following steps:
the opening process of the first and second groups of sucker rod clamping units is as follows:
the two groups of hydraulic cylinders are pressurized simultaneously, the hydraulic cylinder pistons move upwards to drive the connecting rods connected with the upper ends of the hydraulic cylinder pistons to move, the connecting rods drive the pumping rod clamping units to move upwards along the inner wall of the power slip box body, and the inner wall of the power slip box body is of a supporting surface structure with a wide upper part and a narrow lower part, so that the two groups of pumping rod clamping units are gradually far away, and the two semi-cylindrical grooves are separated to form an opening action;
and secondly, locking process of the two groups of sucker rod clamping units:
after the sucker rod enters the semi-cylindrical grooves of the two groups of sucker rod holding units, two groups of hydraulic cylinders simultaneously relieve pressure, hydraulic cylinder pistons move downwards to drive two groups of connecting rods to move, the two groups of connecting rods pull down the sucker rod holding units, the sucker rod holding units move downwards along the inner wall of the power slip box body, and the inner wall of the power slip box body is of a supporting surface structure with a wide upper part and a narrow lower part, so that the two groups of sucker rod holding units gradually approach each other, the semi-cylindrical grooves form a cylindrical groove, when the lowest point of the hydraulic cylinder pistons is reached, the middle parts of the two sucker rod holding units form a complete sucker rod boss, the locking action is completed, and.
The invention has the beneficial effects that: the two groups of sucker rod clamping units are pushed by the two groups of hydraulic cylinders to be simultaneously opened upwards or clamped downwards, and the sucker rod clamping units can be ensured to be positioned on the same horizontal plane at any time; the dovetail groove on the inner side of the power slip box body determines the movement direction of a hydraulic cylinder piston, and the movement direction of the sucker rod clamping units is realized through a guide rail and a guide rail groove, so that the two groups of sucker rod clamping units are ensured to keep the same movement and are positioned on the same horizontal plane when in work; the invention is applied together with the elevator for oil well workover, can improve the efficiency of workover operation, and further realize the automation of workover operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the clamping block of the present invention during opening;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view of the present invention in operation with an elevator;
FIG. 5 is an outline view of the invention and elevator operation;
FIG. 6 is an external view of one end of a sucker rod;
in the upper diagram: the device comprises a sucker rod clamping unit 1, a follow-up sealing device 2, a power slip box body 3, a connecting rod 4, a hydraulic cylinder 5, an elevator 6, a small cross joint 7, a hydraulic cylinder piston 5.1, a hydraulic cylinder body 5.2, a boss 1.1, a cylindrical groove 1.2, a guide rail groove 3.1, a dovetail groove 3.2, an external thread 4.1, an unloading groove 4.2, a thrust surface shoulder 4.3, a wrench square 4.4, a flange 4.5 and an arc transition area 4.6.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 1 and 2, the sucker rod clamping unit 1 of the invention is provided with a follow-up sealing device 2, one end of the follow-up sealing device 2 is connected with the lower end surface of the sucker rod clamping unit 1, the other end of the follow-up sealing device is connected with the upper end of the supporting surface of the sucker rod clamping unit 1, the whole body is telescopic, the follow-up sealing device 2 can prevent dust and impurities from entering a guide rail groove 3.1 when the sucker rod clamping unit 1 moves, the movement precision of the sucker rod clamping unit 1 is further ensured, and finally the two sucker rod clamping units 1 are on the same plane when the sucker rods are clamped.
Referring to fig. 1, 2 and 3, the middle parts of the upper surfaces of two sets of sucker rod clamping units 1 together form a boss 1.1, and a wrench side 4.4 of the sucker rod can be clamped in a flange inside the boss 1.1, so that the working distance between an elevator 6 and a power slip is increased.
Referring to fig. 3, 4 and 5, the cross section of the power slip box body 3 is of a hexagonal structure, the bottom of the power slip box body is provided with a base which is movably connected with a small cross joint 7, and two sides of the power slip box body 3 are respectively provided with a guide rail groove 3.1 which is movably matched with the sucker rod clamping unit 1; dovetail grooves 3.2 are respectively arranged in the front and the back of the power slip box body 3 and are used for being matched with a hydraulic cylinder piston 5.1 in a moving mode, so that the hydraulic cylinder piston 5.1 moves up and down along the dovetail grooves 3.2, and the upper end of the hydraulic cylinder piston 5.1 is hinged to a connecting buckle at the bottom of the sucker rod clamping unit 1.
The hydraulic cylinders 5 are divided into two groups and are positioned at two sides of the power slip box body 3, and the two groups of hydraulic cylinders 5 can simultaneously push the two groups of sucker rod clamping units 1 to move along the supporting surface in the power slip box body 3 when being pressurized; if one group of hydraulic cylinders 5 is not pressurized, the other group of hydraulic cylinders 5 can also finish the action of pushing the sucker rod clamping unit 1, and the sucker rod clamping unit 1 moves along the guide rail groove 3.1, so that the sucker rod clamping unit 1 can move in the set direction without deviation, and the two groups of sucker rod clamping units 1 are ensured to be on the same plane when clamping the sucker rod, and the danger is avoided.
In addition, the bottom surface of the sucker rod clamping unit 1 is of an inclined surface structure, and the bottom surface and the inner wall of the power slip box body 3 are mutually perpendicular, so that the connecting rod 4 can push the sucker rod clamping unit 1 to move upwards or downwards, and labor is saved.
It should be further noted that, referring to fig. 6, one end of the existing sucker rod includes an external thread 4.1, an unloading groove 4.2, a shoulder 4.3 of a thrust surface, a wrench side 4.4, a flange 4.5, and an arc transition area 4.6, when in use, the wrench side 4.4 of the sucker rod can be clamped in the flange inside the boss 1.1 at the top of the sucker rod clamping unit 1, so that the working distance between the automatic elevator and the power slip of the invention can be indirectly increased; in addition, the elevator 6 and the small cross 7 are conventional prior art and will not be described in detail.
The invention provides an operation process of a power slip for workover operation of a bivalve jacking type sucker rod, which comprises the following steps:
the opening process of the first and second groups of sucker rod clamping units is as follows:
the two groups of hydraulic cylinders 5 are pressurized simultaneously, hydraulic cylinder pistons 5.1 move upwards to drive a connecting rod 4 connected with the upper ends of the hydraulic cylinder pistons 5.1 to move, the connecting rod 4 drives the sucker rod clamping units 1 to move upwards along the inner wall of the power slip box body 3, and the inner wall of the power slip box body 3 is of a supporting surface structure with a wide upper part and a narrow lower part, so that the two groups of sucker rod clamping units 1 are gradually far away, and two semicircular cylindrical grooves are separated to form an opening action;
and secondly, locking process of the two groups of sucker rod clamping units:
after the sucker rod enters the semi-cylindrical grooves of the two groups of sucker rod clamping units 1, two groups of hydraulic cylinders 5 simultaneously relieve pressure, hydraulic cylinder pistons 5.1 move downwards to drive the two groups of connecting rods 4 to move, the two groups of connecting rods 4 pull the sucker rod clamping units 1 downwards, the sucker rod clamping units 1 move downwards along the inner wall of the power slip box body 3, and as the inner wall of the power slip box body 3 is of a supporting surface structure with a wide upper part and a narrow lower part, the two groups of sucker rod clamping units 1 gradually approach, the semi-cylindrical grooves form a cylindrical groove 1.2, when the lowest point of the hydraulic cylinder pistons 5.1 is reached, the middle parts of the two sucker rod clamping units 1 form a complete boss 1.1, the locking action is completed, and the clamping of the sucker.
The invention is applied together with the elevator for oil well workover, can improve the efficiency of workover operation, and further realize the automation of workover operation.
The difference from the embodiment 1 is that: the power slip box body 3 adopts a polygonal structure with a thick upper part and a narrow lower part, and dovetail grooves 3.2 are respectively arranged at the front and the rear of the power slip box body 3 and are used for being movably matched with a hydraulic cylinder piston 5.1 so as to enable the hydraulic cylinder piston 5.1 to move up and down along the dovetail grooves 3.2; the two sides of the power slip box body 3 are composed of a plurality of inclined planes, the inclined planes are matched with the shape of the internal sucker rod clamping unit 1, the vertical movement can be realized, and the same horizontal plane is kept.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a bivalve jacking formula sucker rod workover power slips, characterized by: comprises a sucker rod clamping unit (1), a power slip box body (3), a connecting rod (4) and a hydraulic cylinder (5), wherein the power slip box body (3) is sequentially provided with the hydraulic cylinder (5), the connecting rod (4) and the sucker rod clamping unit (1) from bottom to top, the hydraulic cylinder (5) is divided into two groups which are respectively positioned at the front and back symmetrical positions inside the power slip box body (3), the hydraulic cylinder (5) comprises a hydraulic cylinder piston (5.1) and a hydraulic cylinder body (5.2), the upper end of the hydraulic cylinder piston (5.1) is respectively connected to the bottoms of the two groups of the clamping units (1) through the two groups of the connecting rods (4), the outer wall of the sucker rod clamping unit (1) is provided with a guide rail, the inner wall of the power slip box body (3) is of a supporting surface structure which is wide at the top and narrow at the bottom, the inner wall is provided with a guide rail groove (3.1), so that the two groups of the sucker rod, the middle part of the sucker rod clamping units (1) is provided with a semi-cylindrical groove, the two groups of sucker rod clamping units (1) can form a cylindrical groove (1.2) after being combined, and the two groups of sucker rod clamping units (1) clamp the sucker rods when moving downwards;
the sucker rod clamping unit (1) is provided with a follow-up sealing device (2), one end of the follow-up sealing device (2) is connected to the lower end face of the sucker rod clamping unit (1), the other end of the follow-up sealing device is connected to the upper end of the supporting face of the sucker rod clamping unit (1), the whole body is telescopic, the follow-up sealing device (2) can prevent dust and impurities from entering a guide rail groove (3.1) when the sucker rod clamping unit (1) moves, the movement precision of the sucker rod clamping unit (1) is further ensured, and finally the two sucker rod clamping units (1) are positioned on the same plane when the sucker rods are clamped;
the middle parts of the upper surfaces of the two groups of sucker rod clamping units (1) form a boss (1.1) together, and a wrench of the sucker rod can be clamped in a flange inside the boss (1.1), so that the operating distance between the elevator and the power slip is increased.
2. The bivalve jacking sucker rod workover power slip of claim 1, wherein: the hydraulic cylinders (5) are divided into two groups and are positioned at two sides of the power slip box body (3), and the two groups of hydraulic cylinders (5) can simultaneously push the two groups of sucker rod clamping units (1) to move along the supporting surface in the power slip box body (3) when being pressurized; if one group of hydraulic cylinders (5) is not pressurized, the other group of hydraulic cylinders (5) can also finish the action of pushing the sucker rod clamping unit (1).
3. The bivalve jacking sucker rod workover power slip of claim 1, wherein: the section of the power slip box body (3) is of a hexagonal structure, and guide rail grooves (3.1) are respectively arranged on two sides of the power slip box body and are used for movably matching with the sucker rod clamping unit (1); dovetail grooves (3.2) are respectively arranged in the front and the back of the power slip box body (3) and are used for being movably matched with the hydraulic cylinder piston (5.1) to enable the hydraulic cylinder piston (5.1) to move up and down along the dovetail grooves (3.2).
4. The bivalve jacking sucker rod workover power slip of claim 1, wherein: the bottom surface of the sucker rod clamping unit (1) is of an inclined surface structure, and the bottom surface and the inner wall of the power slip box body (3) are perpendicular to each other.
5. A process of operating the power slip of the double-petal jack-up sucker rod workover treatment according to any one of claims 1-4, comprising the following steps:
the opening process of the first and second groups of sucker rod clamping units is as follows:
the two groups of hydraulic cylinders (5) are pressurized simultaneously, hydraulic cylinder pistons (5.1) move upwards to drive connecting rods (4) connected with the upper ends of the hydraulic cylinder pistons (5.1) to move, the connecting rods (4) drive the sucker rod clamping units (1) to move upwards along the inner wall of the power slip box body (3), and the inner wall of the power slip box body (3) is of a supporting surface structure with a wide upper part and a narrow lower part, so that the two groups of sucker rod clamping units (1) are gradually far away, and two semicircular cylindrical grooves are separated to form an opening action;
and secondly, locking process of the two groups of sucker rod clamping units:
after the sucker rod enters the semi-cylindrical grooves of the two groups of sucker rod clamping units (1), two groups of hydraulic cylinders (5) simultaneously relieve pressure, hydraulic cylinder pistons (5.1) move downwards to drive the two groups of connecting rods (4) to move, the two groups of connecting rods (4) pull down the sucker rod clamping units (1), the sucker rod clamping units (1) move downwards along the inner wall of the power slip box body (3), the inner wall of the power slip box body (3) is of a supporting surface structure with a wide upper part and a narrow lower part, so that the two groups of sucker rod clamping units (1) gradually approach, the semi-cylindrical grooves form a cylindrical groove (1.2), when the lowest point of the hydraulic cylinder pistons (5.1) is reached, the middle parts of the two sucker rod clamping units (1) form a complete boss (1.1), the locking action is completed, and the clamping of the sucker rod is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093257.8A CN111927344B (en) | 2020-10-14 | 2020-10-14 | Double-petal jacking type sucker rod workover power slip and operation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093257.8A CN111927344B (en) | 2020-10-14 | 2020-10-14 | Double-petal jacking type sucker rod workover power slip and operation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111927344A CN111927344A (en) | 2020-11-13 |
| CN111927344B true CN111927344B (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011093257.8A Active CN111927344B (en) | 2020-10-14 | 2020-10-14 | Double-petal jacking type sucker rod workover power slip and operation process |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202039795U (en) * | 2011-05-06 | 2011-11-16 | 张晓忠 | Pneumatic slips of multifunctional drill stem |
| CN202348168U (en) * | 2011-12-07 | 2012-07-25 | 辽宁石油机械制造有限公司 | Novel wedge-shaped slip capable of keeping pipe undamaged |
| CN105401894B (en) * | 2015-12-23 | 2019-01-01 | 西安秦森科技有限公司 | A kind of positive and negative dress integral type slips |
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