CN203022656U - Pneumatic slips with standard bushing - Google Patents

Abstract

The utility model relates to pneumatic slips with a standard bushing, belonging to the technical field of well drilling assorted equipment. The pneumatic slips comprise a slips seat, air cylinders, piston rods, slips bodies, support discs, an air distribution seat and the like, wherein the slips seat is internally provided with four air cylinders with piston rods; the support discs and connection sheet ear tenons are fixedly arranged at the upper ends of the piston rods; the connection sheet ear tenons are provided with the slips bodies through connection sheets; and the air distribution seat and an air channel pipeline are arranged on the slips seat. According to the pneumatic slips, a fully built-in air cylinder-air channel structure is used, so that the working height of the slips is greatly reduced, the working face is basically level with the drill floor face when the slips tightly clamp a drill pipe, then the labor intensity of the workers is reduced, the assembling and the disassembling are convenient and the safety of the operation is enhanced. The structure is simple, the use is safe and reliable, and after the slips bodies are dismounted, the operations such as drill bit change, back reaming, turntable rotation and the like can be satisfied under the abnormal condition of using handheld slips, so that the problems that the existing slips are high in working height and small in application range and the used external air cylinder air channel pipelines are fragile are solved.

Description

A kind of air operated slips with the standard bushing

Technical field

The utility model relates to a kind of air operated slips with the standard bushing, belongs to drilling well corollary equipment technical field.

Background technology

Oil field or geological drilling when carrying out round trip and casing job, generally all adopt the operating type of two elevator operations or single elevator+portable slips at present, and these modes all exist labour intensity large, inefficiency, the problems such as poor safety performance.The external pneumatic drill pipe slip of producing has alleviated labour intensity to a certain extent.But slips body running height is high, is difficult to support the use with domestic wellhead equipment, and inconvenient staff's operation, and complex structure, expensive are unfavorable for promoting the use of at home.

The pneumatic drill pipe slip of domestic development such as the patent No. are 02212500.0, name is called the Chinese patent of " power slip ", providing a kind of utilizes two external cylinders to be the drill pipe slip of power, cylinder is fixed on above slip spider, two cylinders adopt independent gas supply, and four gas circuit pipelines are put on the rig floor table top; Automaticity is higher, has reduced the well head operator, saves manpower, effectively reduces workman's labour intensity; But exist the real work of slips body highly high, be unfavorable for that operation and wellhead equipment support the use; And gas circuit pipeline is more, causes the loading and unloading trouble, external problem of putting fragile gas circuit pipeline.

And for example the patent No. is 200320100403.0,Name is called the Chinese patent of " Multifunction full automatic drill rod pneumatic clamping apparatus ", overcome preferably the deficiency of foregoing invention, but because this slips body is to open by the deadweight of hinges and slips body in the process that promotes and transfer, after experiencing repeatedly operation, can occur as phenomenons such as upper pin fixed screw slide fastener, lower bearing pin flexural deformation, guide peg fixed screw become flexible, functional reliability is relatively poor.In addition, when hinge corrosion situation occurring, slips can not all be opened, and drill pipe coupling occurs easily and the slips body collides, the accident that causes slip system to damage.

And above-mentioned two kinds of air operated slips all use the stairstepping slip spider, and this species stage shape slip spider must coordinate with special-purpose slips body one to one and uses, and can not take into account and use portable slips; And the slip spider lower openings is less than normal, and when making a trip in the well bigger than normal of angle of inclination, drilling rod and box cupling easily collide with and damage the slips body, and when serious, trip-out meeting traction goes out slip spider.Simultaneously, in the operating process such as bit change, back reaming, rotary turnplate, must go out well to the slips integral lifting, have a strong impact on operating efficiency.

Summary of the invention

The purpose of this utility model is, provide a kind of take four built-in air cylinders as power, can hidden installation gas circuit pipeline, drive the lifting of slips body by supporting disk, can make the slips body running at proper height, not rely on the deadweight of hinge and slips body to open when promoting and putting down the slips body, avoid having an accident because of hinges corrosion or bearing pin slide fastener, loosening, flexural deformation, employing standard master bushing formula slip spider can be taken into account after dismounting slips body and use portable slips; And simple in structure, safe and reliable, flexible and convenient operation, the air operated slips with the standard bushing applied widely.

The utility model is to realize by the following technical solutions above-mentioned purpose

This air operated slips with the standard bushing is made of slip spider, cylinder, piston rod, slips body, supporting disk, distribution seat, bearing pin and gas circuit pipeline, it is characterized in that: two slip spiders are connected through the hinge as a whole, be manufactured with four cylinders in the slips pedestal, piston rod is housed in cylinder, the piston rod upper end is fixed with supporting disk and brace ear tenon by slotted nut, and supporting disk and brace ear tenon are affixed by hexagon socket head cap screw; Brace ear tenon is equipped with the slips body by brace, by the slip insert fixed screw, slip insert is installed on slips body intrados; The distribution seat is installed above slip spider and is placed with gas circuit pipeline by groove; The slip spider bottom is equipped with wear ring.

The utility model beneficial effect compared with prior art is

This air operated slips with the standard bushing adopts full built-in air cylinder and gas circuit structure, greatly reduces the working depth of slips, and when making its chucking drilling rod, work plane is basic concordant with drilling floor surface, facilitates hydraulic tongs to use.Give simultaneously four cylinder air feed by a distribution seat, guaranteed the synchronism of cylinder lifting, reduced the gas circuit pipeline quantity of drilling well work top, automaticity is high, reduces rig floor personnel configuration, has reduced labour intensity; Assembling, convenient disassembly have strengthened the safety of operation.The slip spider of employing standard master bushing, by changing the slips body of different size, can be applicable to the drilling rod round trip of different size, can satisfy the work such as bit change, back reaming, rotary turnplate under portable slips abnormal condition of using after unloading the lower slips body, realize the multifunctionality of drilling well air operated slips, improved operating efficiency.This band standard core compensated type air operated slips is simple in structure, safe and reliable, can be applicable on the serial drilling rotary table such as ZP205, ZP275, ZP375 and workover rig, and is applied widely, functional strong.Solved existing slips working depth high, the scope of application is little; Adopt the flimsy problem of external cylinder gas circuit pipeline.

Description of drawings

Fig. 1 is a kind of main TV structure schematic diagram of the air operated slips with the standard bushing;

Fig. 2 is a kind of plan structure schematic diagram of the air operated slips with the standard bushing.

In figure: 1, slip spider, 2, wear ring, 3, cylinder, 4, piston rod, 5, the slips body, 6, brace, 7, brace ear tenon, 8, slotted nut, 9, hexagon socket head cap screw, 10, supporting disk, 11, the distribution seat, 12, slip insert, 13, slip insert fixed screw, 14, cottor pin, 15, bearing pin, 16, gas circuit pipeline, 17, the pipe bar.

The specific embodiment

This air operated slips with the standard bushing is made of slip spider 1, cylinder 3, piston rod 4, slips body 5, brace 6, brace ear tenon 7, supporting disk 10, distribution seat 11, slip insert 12, bearing pin 15 and gas circuit pipeline 16, two slip spiders 1 are connected through the hinge as a whole, be manufactured with four cylinders 3 in slip spider 1 body, piston rod 4 is housed in cylinder 3, piston rod 4 upper ends are fixed with supporting disk 10 and brace ear tenon 7 by slotted nut 8, and supporting disk 10 is affixed by hexagon socket head cap screw 9 with brace ear tenon 7; Brace ear tenon 7 is equipped with slips body 5 by brace 6, and described brace ear tenon 7 is flexibly connected by bearing pin 15 and cottor pin 14 with brace 6.By slip insert fixed screw 13, slip insert 12 is installed on slips body 5 intrados, can selects to change corresponding slip insert 12 according to different pipe bars, with the round trip of applicable various drilling rods, drill collar and sleeve pipe, realize the multi-functional characteristic of air operated slips.Distribution seat 11 is installed above slip spider 1 and is placed with gas circuit pipeline 16 by groove; The bottom of slip spider 1 is equipped with wear ring 2.

The course of work when the below illustrates trip-out operation of the present utility model and tripping operation:

During the trip-out operation, driller's operation first tangles pipe bar 17, and the operation Pneumatic valve makes distribution seat 11 from the bottom inflow of cylinder 3, makes piston rod 4 increase, and it is up that piston rod 4 drives slips body 5 by supporting disk 10 and brace 6; Manage simultaneously on bar 17 and carry, utilize the frictional force of pipe bar 17 and slip insert 12, slips body 5 outwards expands, and allows open walk for pipe bar 17, and pipe bar 17 is up.To block pipe during bar 17 when unloading the screw rod button, stop riser bar 17, control distribution seat 11 from cylinder 3 top air inlets by Pneumatic valve, this moment, piston rod 4 was descending, pull supporting disk 10 to descend by piston rod 4, four slips bodies 5 are descending along the interior garden conical surface of slip spider 1, and opening diameter reduces gradually, until till obvolvent chucking pipe bar 17.Internal circular surfaces at slips body 5 is equipped with slip insert 12, slip insert 12 can prevent from managing the function that bar 17 glides and has certain anti-axial rotation, kind (drilling rod, drill collar and sleeve pipe) and material according to the pipe bar 17 that uses, can select corresponding slip insert 12, use safety to reach, operate rationally, also reduce the purpose that pipe bar 17 impressions are injured.

Basic identical when the slips course of work and trip-out operation during tripping operation, be also first hold pipe bar 17 and make distribution seat 11 from the bottom inflow of cylinder 3, unclamp slips body 5, transfer pipe bar 17, then control distribution seat 11 from cylinder 3 top air inlets by Pneumatic valve, shrink chucking pipe bar 17 by slips body 5.

During the work such as serious and bit change, back reaming, rotary turnplate, take off slips body 5 when the well head deflection, because the centre bore of slip spider 1 is the interior garden conical surface, can use portable slips can satisfy the abnormal condition operation.

The above is the specific embodiment of this utility model, above-mentioned not illustrating is construed as limiting flesh and blood of the present utility model, the person of an ordinary skill in the technical field can make an amendment or be out of shape the above-mentioned specific embodiment after having read this manual, and does not deviate from essence of the present utility model and scope.

Claims (1)

1. air operated slips with the standard bushing, it is by slip spider (1), cylinder (3), piston rod (4), slips body (5), supporting disk (10), distribution seat (11), bearing pin (15) and gas circuit pipeline (16) consist of, it is characterized in that: two slip spiders (1) are connected through the hinge as a whole, be manufactured with four cylinders (3) in slip spider (1) body, piston rod (4) is housed in cylinder (3), piston rod (4) upper end is fixed with supporting disk (10) and brace ear tenon (7) by slotted nut (8), supporting disk (10) is affixed by hexagon socket head cap screw (9) with brace ear tenon (7), brace ear tenon (7) is equipped with slips body (5) by brace (6), by slip insert fixed screw (13), slip insert (12) is installed on slips body (5) intrados, distribution seat (11) is installed above slip spider (1) and is placed with gas circuit pipeline (16) by groove, slip spider (1) bottom is equipped with wear ring (2).

Images