CN210998455U - Casing pipe nipple assembling and disassembling device - Google Patents

Abstract

The utility model relates to a casing pipe nipple joint handling device. The sleeve pipe nipple assembling and disassembling device comprises a nipple clamping device, wherein the nipple clamping device is used for clamping the outer peripheral surface of a sleeve pipe nipple to be disassembled so as to drive the sleeve pipe nipple to rotate; the short section clamping device is provided with a driving arm, and the driving arm extends towards one side of the short section clamping device and is used for enabling the top of the driving arm to extend above the ground when in use; the top of the driving arm is provided with a stress application rod connecting structure for connecting corresponding stress application rods, and the stress application rod connecting structure is used for enabling the stress application rods to drive the short section clamping device to rotate through the driving arm. Above-mentioned scheme has solved when the casing nipple is less than the ground, because the limited problem that leads to casing nipple dismouting difficulty in space.

Description

Casing pipe nipple assembling and disassembling device

Technical Field

The utility model relates to a casing nipple handling device belongs to oil field borehole operation workover tool technical field.

Background

As shown in figure 1, the casing nipple 101 is a connecting part between a casing head 103 of an oil-water well and a ground wellhead, a wellhead four-way 102 is connected to a screw thread at the top of the general casing nipple 101, and the casing often leaks oil due to corrosion, ageing of the screw thread and other reasons in the production process, so that the casing nipple 101 needs to be replaced. Under the conventional installation state, casing nipple 101 is located above ground 104, and the processing method when casing nipple 101 is changed is that wellhead cross-joint 102 is detached from the top of casing nipple 101, and then tools such as pipe tongs and a force application rod are used to detach casing nipple 101. However, as shown in fig. 2, if the casing nipple 101 is lower than the ground 105 due to well pad, pumping unit foundation and other reasons, the common tools cannot normally operate due to space limitation, the operation pit 105 needs to be built around the mechanical expansion well mouth to assemble and disassemble the casing nipple 101, large-area excavation needs to be performed on the ground when the operation pit 105 is built, so that manpower and material resources are wasted, and the well mouth is opened for a long time due to the excavation of the operation pit 105, so that well control potential safety hazards exist.

The utility model discloses a casing nipple piece device of breaking out that current casing nipple piece handling device is disclosed as the utility model patent of publication number CN204225803U, through the retainer plate with the casing pipe fixed of casing nipple piece lower part, fixed with the casing nipple piece through nipple joint clamping device (the clamping unit in the above-mentioned patent promptly), drive clamping unit rotates the loading and unloading that realizes the casing nipple piece for the retainer plate under drive arrangement's drive. However, this casing nipple break-out device is bulky, is less than ground to the casing nipple, and the casing nipple is changed to the oil-water well that receives the space restriction, and the device can't normally operate.

If the utility model discloses a well head sleeve pipe nipple joint handling ware that publication number is CN2595991Y again, sleeve pipe nipple joint handling ware has two semi-circular clamps to constitute, and two clamps pass through pin joint, are equipped with fastening bolt on one of them clamp, and another is equipped with the bolt positioning groove, realizes the fixed of sleeve pipe nipple joint through screwing up fastening bolt, is equipped with afterburning handle earrings on the clamp top, uses the afterburning handle earrings on two clamps to insert, promotes the loading and unloading of sleeve pipe nipple joint of afterburning pole completion. The device simple structure, the efficiency of construction is high, but this utility model also can not solve the inconvenient problem of dismantlement when the sleeve pipe nipple joint is less than the ground.

SUMMERY OF THE UTILITY MODEL

The utility model provides a casing nipple handling device to when solving the casing nipple joint and being less than the ground, because the limited problem that leads to casing nipple joint dismouting difficulty in space.

In order to solve the above problem, the utility model provides a casing nipple handling device technical scheme does:

a casing pipe nipple assembling and disassembling device comprises a nipple clamping device, wherein the nipple clamping device is used for clamping the outer peripheral surface of a casing pipe nipple to be disassembled so as to drive the casing pipe nipple to rotate;

the short section clamping device is provided with a driving arm, and the driving arm extends towards the upper part of the short section clamping device and is used for extending above the ground when in use;

the top of the driving arm is provided with a stress application rod connecting structure for connecting corresponding stress application rods, and the stress application rod connecting structure is used for enabling the stress application rods to drive the short section clamping device to rotate through the driving arm.

The utility model has the advantages that: through set up the actuating arm on nipple joint clamping device, the actuating arm can extend to more than ground, the top of actuating arm is equipped with the energizing rod coupling mechanism who supplies corresponding energizing rod to connect, make the energizing rod pass through the actuating arm and drive nipple joint clamping device and rotate, make exerting force on the actuating arm just can drive nipple joint clamping device and rotate, thereby when having solved the casing head and being less than ground, because the limited problem that leads to sleeve pipe nipple joint dismouting difficulty in space, only need the excavation ground of minizone, can hold nipple joint clamping device can, the operation volume is few, low in labor strength.

Preferably, the driving arm is formed of a U-shaped operating ring; the bottom of operation ring corresponds with the opening of U-shaped, and the top forms the application of force pole that supplies the application of force pole to pass and penetrates the space, the application of force pole penetrates the space and forms application of force pole connection structure.

Has the advantages that: the actuating arm is formed by the operating ring of U-shaped, and U-shaped operating ring structure is simple, and the processing of being convenient for, the bottom of U-shaped ring corresponds with the opening of U-shaped, and the top forms the power application pole that supplies the power application pole to pass and penetrates the space, and the power application pole can penetrate fast, and U-shaped ring simple structure, cost of manufacture are low, and great moment of torsion can also be born to its structure.

According to the preferable technical scheme, the driving arms are provided with two positions, the two driving arms are located on two opposite sides of the short section clamping device, and the force applying rods formed by the two driving arms penetrate into the space and are arranged oppositely.

Has the advantages that: the actuating arm is located nipple joint clamping device's the both sides that carry on the back mutually, and the application of force pole can pass two application of force pole connection structure, and when carrying out the application of force to the application of force pole, the power has been avoided too concentrating on two actuating arms, is favorable to improve equipment's security.

Preferably, the driving arm is movably arranged on the short joint clamping device up and down.

Has the advantages that: the driving arm is movably arranged on the nipple clamping device up and down, corresponding adjustment can be made according to the positions of the sleeve nipple and the ground, the length of a force transmission path of the force application rod can be shortened when a longer driving arm is not needed, and loading and unloading operations are facilitated.

According to a preferable technical scheme, the short section clamping device is provided with a driving arm through hole which is vertically communicated, the lower end of the driving arm penetrates through the driving arm through hole, the penetrating part is provided with a stopping structure, and the stopping structure is used for fixing the driving arm on the short section clamping device so as to prevent the driving arm from slipping from the driving arm through hole.

Has the advantages that: the stop structure can fix the driving arm on the short section clamping device, so that the driving arm is safer in the use process.

As a preferred technical scheme, the lower end of the driving arm is provided with an external thread, and the stop structure is an anti-drop nut assembled on the external thread.

Has the advantages that: the anti-drop nut is convenient to manufacture, assemble and disassemble.

According to the technical scheme, the nipple clamping device comprises a plate-shaped main body, a nipple through hole is formed in the center of the plate-shaped main body, at least two fixture block sliding grooves are formed in the hole wall of the nipple through hole, a fixture block is assembled in each fixture block sliding groove in a radial guiding mode along the nipple through hole, a threaded hole is formed in the bottom wall of each fixture block sliding groove, and a jackscrew used for driving the fixture block to move towards the center of the nipple through hole is arranged in each threaded.

Has the advantages that: the fixture block is installed in the fixture block spout, has restricted the moving direction of fixture block, uses the jackscrew to drive the fixture block to the motion of nipple joint perforation center, simple structure, and convenient to use, control nipple joint clamping device's that can be better centre gripping position and centre gripping dynamics are favorable to the better tight casing nipple joint of clamp of nipple joint clamping device.

As an optimal technical scheme, one side of the fixture block, which is close to the center of the nipple hole, is provided with a tooth block clamping groove, a tooth block is installed in the tooth block clamping groove, and the tooth block is used for being clamped to the outer peripheral surface of the casing nipple so as to drive the casing nipple to rotate.

Has the advantages that: the tooth block is installed through the tooth block clamping groove, so that the tooth block is convenient to assemble, the strength of the tooth block is improved, and the work is reliable.

According to the preferable technical scheme, the side face, close to the center of the nipple perforation, of the clamping block is an arc surface, and the arc surface is arranged around a vertical axis;

as a preferred technical scheme, more than two tooth blocks are arranged on each clamping block, and each tooth block is arranged along the circumferential direction.

Has the advantages that: more than two tooth blocks are arranged, so that the short section of the casing can be clamped better, and the reliability is improved.

As a preferable technical scheme, the tooth block is detachably fixed on the fixture block.

Has the advantages that: in the use process, the tooth blocks can be replaced in time under the conditions of abrasion, aging and the like, and the work efficiency is improved.

The above-described preferred embodiments may be adopted alone, or two or more embodiments may be arbitrarily combined when they can be combined, and the embodiments formed by the combination are not specifically described here and are included in the description of the present patent.

Drawings

FIG. 1 is a schematic view of a normal installation state of a casing sub;

FIG. 2 is a schematic representation of the construction of the casing sub when installed below ground;

fig. 3 is a schematic structural diagram of an embodiment 1 of a loading and unloading casing nipple device according to the present invention;

fig. 4 is a schematic structural diagram of a nipple clamping device in another embodiment of the loading and unloading casing nipple device of the present invention.

The names of the components corresponding to the corresponding reference numerals in the drawings are:

1-a plate-like body;

2-clamping blocks;

3-top thread;

4-operating ring;

5-a screw cap;

6-radial threaded through holes;

7-perforation of the driving arm;

8-short section perforation;

9-a tooth block;

10-a fixture block chute;

11-tooth block slot;

21-a first clamp;

22-a second clip;

23-a pin;

24-a fastening bolt;

25-bolt positioning grooves;

26-a dental block;

101-casing sub;

102-wellhead cross;

103-casing head;

104-ground;

105-operating pits.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model discloses in a casing nipple joint handling device's embodiment 1 is as shown in fig. 3, including platelike main part 1, fixture block 2 and operating ring 4, platelike main part 1 and fixture block 2 are used for forming nipple joint clamping device, and nipple joint clamping device is used for the centre gripping to wait to dismantle on the outer peripheral face of casing nipple joint in order to drive the casing nipple joint and rotate. The operating ring 4 is used to form a drive arm which extends above the sub gripping means for reaching above the ground in use.

The plate-shaped main body 1 is made for the circular steel sheet of thickness 50mm, and plate-shaped main body 1 center is equipped with nipple joint perforation 8, still is equipped with three fixture block spout 10 along the circumference equipartition on the plate-shaped main body 1, and fixture block spout 10 is along plate-shaped main body 1's radial extension to radial inner communicates with the nipple joint perforation 8 at plate-shaped main body 1 center, and the afterbody of fixture block spout 10 is equipped with radial screw hole 6, supplies jackscrew 3 to pass.

The fixture block 2 is arranged in the fixture block sliding groove 10, grooves are formed in the side faces of two sides of the width direction of the fixture block 2, and the grooves are clamped on the groove body of the fixture block sliding groove 10 to achieve the vertical positioning of the fixture block 2, so that the fixture block 2 can only move in the radial direction of the plate-shaped main body 1 in the fixture block sliding groove 10. The side face, facing the center of the nipple hole, of the fixture block 2 is provided with a dovetail-shaped tooth block clamping groove 11 for mounting the tooth block 9, the front side of the tooth block 9 is provided with locking teeth, the rear side of the tooth block 9 is provided with a dovetail-shaped structure matched with the fixture block 2, the tooth block 9 is further provided with a threaded hole which is communicated with the front and the rear of the tooth block, and the tooth block 9 is fixed in the fixture block sliding groove 10 through a screw. The side surface of the fixture block 2 close to the center of the nipple through hole 8 is an arc surface, and the arc surface is arranged around a vertical axis; two tooth blocks 9 are arranged on each clamping block 2, and each tooth block 9 is arranged along the circumferential direction.

The operating ring 4 is a U-shaped structure, is made of a rod piece by bending, and comprises two vertical rod parts extending vertically and an arc-shaped connecting part connected to the top ends of the two vertical rod parts. Correspondingly, the edge of the plate-shaped main body 1 is provided with two pairs of driving arm through holes 7, the vertical rod part of the operating ring 4 downwards penetrates through the corresponding pair of driving arm through holes 7, the penetrating part is provided with an external thread, and the external thread is connected with a nut 5 and is fixed on the plate-shaped main body 1 through the nut 5. The nut 5 forms a stop structure that secures the operating ring 4 to the nipple gripping device to prevent the operating ring 4 from slipping out of the drive arm bore 7. The arc-shaped connecting part of the operating ring 4 forms a stress application rod penetrating space for the stress application rod to penetrate through, and the stress application rod penetrates through the space to form a stress application rod connecting structure.

The operating rings 4 are two, the two operating rings 4 are symmetrically distributed to form two driving arms which are positioned on two opposite sides of the short section clamping device, and the force applying rods formed by the two driving arms penetrate into the space and are oppositely arranged to penetrate into the space for the force applying rods to penetrate simultaneously.

When the pipe nipple clamping device is used, the pipe nipple clamping device is sleeved on a pipe nipple through a nipple through hole 8 by the aid of the handheld operating rings 4, the three jackscrews 3 are respectively rotated clockwise by the aid of an adjustable wrench, the jackscrews 3 push the fixture block 2 to move towards the central direction until the fixture block 9 bites the pipe nipple, at the moment, the stressing rod penetrates through the stressing rod connecting structures of the two operating rings 4, and the pipe nipple can be detached by rotating the stressing rod anticlockwise; in a similar way, when the short section of the casing is installed, the sleeve short section can be fixed by clockwise rotating the stress application rod. During operation, only need be subaerial excavation less scope the operation hole, can hold casing pipe nipple joint handling device can, can reduce the excavation area effectively, the material resources of using manpower sparingly.

The utility model discloses well casing nipple handling device's embodiment 2: the difference with embodiment 1 is that the driving arm in embodiment 1 is formed by a U-shaped operating ring, but in this embodiment, only one operating ring is provided, and when in use, an operating rod can be inserted from one side of the casing nipple assembling and disassembling device to drive the nipple clamping device to rotate.

The utility model discloses well casing nipple handling device's embodiment 3: the difference with embodiment 1 lies in, in this embodiment, the operating ring is equipped with three, and each operating ring is along circumference equipartition, and during the use, insert an action bars respectively in each operating ring, drive nipple joint clamping device jointly and rotate. Of course, in other embodiments, more than four operation rings may be provided.

The utility model discloses well casing nipple handling device's embodiment 4: the difference from embodiment 1 is that in embodiment 1, the diameter of the portion of the operating ring 4 penetrating through the driving arm through hole 7 is small, and the operating ring 4 can be fixed on the plate-shaped main body by a nut, and in this embodiment, the diameter of the driving arm through hole 7 is larger than the rod body diameter of the operating ring, and the operating ring 4 can move up and down along the driving arm through hole 7.

The utility model discloses well casing nipple handling device's embodiment 5: the difference from embodiment 1 is that in embodiment 1, the stopping structure for fixing the driving arm to the short segment clamping device to prevent the driving arm from slipping out of the driving arm through the through hole is an anti-slip nut, in this embodiment, the lower end of the operating ring 4 is provided with a pin hole through which a stop pin passes, and the stopping structure is formed by the stop pin in the pin hole.

The utility model discloses well casing nipple handling device's embodiment 6: the difference from embodiment 1 is that the driving arm in embodiment 1 is formed by a U-shaped operating ring, but in this embodiment, the driving arm is formed by a column fixed on the top surface of the plate-shaped main body 1, the column is a tube structure, the bottom end of the column is welded on the plate-shaped main body, the top of the column is provided with a force applying rod through hole penetrating along the radial direction, and the force applying rod through hole forms a force applying rod connecting structure. Of course, in other embodiments, the upright can be fixed to the plate-like body 1 by other means, for example by means of a flange connection.

In the embodiment, the fixture block 2 is pushed to advance by rotating the jackscrew 3, so that the tooth block 9 is clamped with the casing nipple, and in other embodiments, the nipple clamping device can be replaced by other forms. For example, the clamping unit adopted in the chinese patent with publication number CN204225803U in the background art is replaced to realize the fixation of the casing nipple.

If again, the utility model discloses well casing nipple handling device's embodiment 7: the short section clamping device is replaced by a short section clamping device in a hoop form adopted in CN2595991Y Chinese patent, so that the clamping of the short section of the casing pipe is realized. Specifically, as shown in fig. 4, the nipple gripping device includes two semicircular bands, namely a first band 21 and a second band 22. The circumference one side of first clamp 21 and second clamp 22 is articulated each other through pin 23, can open and shut relatively, and when first clamp 21 and second clamp 22 buckled, the nipple joint perforation was enclosed into to the center between them, and the diameter of nipple joint perforation slightly is greater than the diameter of sleeve pipe nipple joint. The other side of the circumference of first clamp 21 and second clamp 22 is equipped with flange respectively, is equipped with fastening bolt 24 and bolt positioning groove 25 respectively on two flange, and bolt positioning groove 25 extends along the direction that dorsad pin 23. The middle part of fastening bolt 24 articulates on first clamp 21, and when first clamp 21 and the relative armful of second clamp 22, fastening bolt 24 can swing in the bolt positioning groove 25 that sets up on second clamp 22, then, screws up the nut on fastening bolt 24, realizes the cohesion of first clamp 21 and second clamp 22. Meanwhile, two tooth blocks 26 are respectively arranged on the inner walls of the first clamp 21 and the second clamp 22, and the tooth blocks 26 are used for being clamped on the outer peripheral surface of the short section of the casing pipe when the first clamp 21 and the second clamp 22 are mutually embraced, so that torque is effectively transmitted. In order to solve the problem that the casing sub is difficult to assemble and disassemble due to limited space when the casing sub is lower than the ground, the first clamp 21 and the second clamp 22 are respectively provided with a driving arm (not shown in the figure, arranged on the top surfaces of the first clamp 21 and the second clamp 22, namely on the surface facing the reader in fig. 4), the driving arm is arranged in the form of the casing sub assembling and disassembling device in embodiment 6, and the driving arm extends towards the upper part of the sub clamping device and is used for extending to the ground when in use.

The utility model discloses well casing nipple handling device's embodiment 8: the difference from embodiment 7 is that in embodiment 7, the first clip 21 and the second clip 22 are respectively provided with a fastening bolt and a bolt positioning groove, and the middle portion of the fastening bolt is hinged on the first clip, and the bolt positioning groove extends along the direction opposite to the pin 23, while in this embodiment, the connecting flanges of the first clip 21 and the second clip 22 are respectively provided with bolt through holes, and after the two clips are fastened, the fastening is realized by bolts passing through the bolt through holes.

The utility model discloses well casing nipple handling device's embodiment 9: the difference from embodiment 7 is that the driving arm is provided on the top surfaces of the first yoke 21 and the second yoke 22 in embodiment 7, but the driving arm is welded and fixed on the outer side surfaces of the first yoke 21 and the second yoke 22 in this embodiment, which can form a larger contact area with the first yoke 21 and the second yoke 22, thereby improving the structural strength.

The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.

Claims (10)

1. The utility model provides a casing nipple handling device which characterized in that:

the pipe nipple clamping device is used for clamping the outer peripheral surface of a sleeve pipe nipple to be disassembled so as to drive the sleeve pipe nipple to rotate;

the short section clamping device is provided with a driving arm, and the driving arm extends towards the upper part of the short section clamping device and is used for extending above the ground when in use;

the top of the driving arm is provided with a stress application rod connecting structure for connecting corresponding stress application rods, and the stress application rod connecting structure is used for enabling the stress application rods to drive the short section clamping device to rotate through the driving arm.

2. A casing sub handling device according to claim 1, in which: the drive arm is formed by a U-shaped operating ring; the bottom of operation ring corresponds with the opening of U-shaped, and the top forms the application of force pole that supplies the application of force pole to pass and penetrates the space, the application of force pole penetrates the space and forms application of force pole connection structure.

3. A casing sub handling device according to claim 2, in which: the driving arms are arranged at two positions, the two driving arms are located on two opposite sides of the short section clamping device, and the stress application rods formed by the two driving arms penetrate into the space and are arranged oppositely.

4. A casing sub handling device according to any of claims 1 to 3, in which: the driving arm is movably arranged on the short section clamping device up and down.

5. A casing sub handling device according to any of claims 1 to 3, in which: the short section clamping device is provided with a driving arm through hole which is communicated up and down, the lower end of the driving arm penetrates out of the driving arm through hole, and the penetrating part is provided with a stopping structure which is used for fixing the driving arm on the short section clamping device so as to prevent the driving arm from slipping out of the driving arm through hole.

6. A casing sub handling device according to claim 5, in which: the lower end of the driving arm is provided with external threads, and the stopping structure is an anti-drop nut assembled on the external threads.

7. A casing sub handling device according to any of claims 1 to 3, in which: the nipple clamping device comprises a plate-shaped main body, a nipple through hole is formed in the center of the plate-shaped main body, at least two fixture block sliding grooves are formed in the hole wall of the nipple through hole, a fixture block is assembled in each fixture block sliding groove along the radial direction of the nipple through hole, a threaded hole is formed in the bottom wall of each fixture block sliding groove, and a jackscrew used for driving the fixture block to move towards the center of the nipple through hole is arranged in each threaded hole.

8. A casing sub handling device according to claim 7, in which: one side of the clamping block, which is close to the center of the nipple hole, is provided with a tooth block clamping groove, a tooth block is arranged in the tooth block clamping groove, and the tooth block is used for being clamped to the outer peripheral surface of the casing nipple so as to drive the casing nipple to rotate.

9. A casing sub handling device according to claim 8, in which: the side surface of the fixture block close to the center of the nipple through hole is an arc surface, and the arc surface is arranged around a vertical axis;

more than two tooth blocks are arranged on each clamping block, and each tooth block is arranged along the circumferential direction.

10. A casing sub handling device according to claim 8, in which: the tooth block can be detachably fixed on the fixture block.

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