CN211777261U

CN211777261U - Soluble integral slip

Info

Publication number: CN211777261U
Application number: CN202020155456.6U
Authority: CN
Inventors: 曾琦军
Original assignee: Sichuan Weitai Kechuang Petroleum Equipment Manufacturing Co ltd
Current assignee: Sichuan Weitai Kechuang Petroleum Equipment Manufacturing Co ltd
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2020-10-27
Anticipated expiration: 2030-02-07

Abstract

The utility model relates to a downhole tool technical field of oil and gas trade, especially a soluble integral slips, including being cylindric slip seat and a plurality of slips tooth's socket, the one end of slip seat has a plurality of pinion rack, adjacent two clearance has between the pinion rack, be equipped with the slips tooth in the slips tooth's socket. The soluble integral slip is simple in structure and convenient to process, a plurality of slip tiles are assembled into the slip without processing a single slip tile, processing and installation procedures are reduced, cost is saved, the slip is not easy to damage in the process of putting the ball seat into a well, and the anchoring performance of the slip is improved; simultaneously, its one end that is used for the sealed section of thick bamboo of butt does not be equipped with the clearance, can transmit even effort for sealed section of thick bamboo, has avoided sealed section of thick bamboo atress inhomogeneous and damage.

Description

Soluble integral slip

Technical Field

The utility model relates to a downhole tool technical field of oil and gas trade, especially a soluble integral slips.

Background

At present, the soluble ball seat is widely applied to plugging of deep gas wells, and slips of the soluble ball seat are used as anchoring elements of the soluble ball seat, need to bear pressure for the ball seat, and realize anchoring when the ball seat is set. It features that the slip seat of slip can be dissolved in the liquid with relative mineralization. In the ball seat structure, a sealing cylinder, a slip and a lower joint are sequentially arranged from one end with a larger outer diameter of a cone to one end with a smaller outer diameter of the cone, when the ball seat is set, the lower joint exerts axial abutting force on the slip, so that the slip seat moves from one end with the smaller outer diameter of the cone to one end with the larger outer diameter of the cone along the slope surface of the cone of the ball seat, all slip teeth on the slip are nailed into the wall of the sleeve, and anchoring of the slip is realized.

Most of the existing slip seats are formed by hooping a plurality of slip sheets 11, the outer surface of each slip seat is provided with slip tooth grooves for installing slip teeth, as shown in fig. 1, two adjacent slip sheets 11 are connected with each other, a cutting seam 12 is preset, the structure is complex, the processing is difficult, and in the process of going down a well, the slip is under the action of axial pressure and the radial pressure of a cone, and the slip sheets 11 are easily damaged to influence the anchoring performance. Besides, a cutting seam 12 is formed at one end, abutted against the sealing barrel, of the slip seat, so that the acting force transmitted to the sealing barrel by the slip is uneven, and the sealing barrel is easily damaged when the ball seat is set.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the problem that the sealing cylinder is easy to damage due to the fact that the slips in the prior art are complex in structure, difficult to process and easy to damage, and stress cannot be uniformly transmitted to the sealing cylinder is solved, and the soluble integral slips are provided.

In order to realize the purpose, the utility model discloses a technical scheme be:

the utility model provides a soluble integral slips, is including being cylindric slip seat and a plurality of slips tooth socket, the one end of slip seat has a plurality of pinion racks, adjacent two have the clearance between the pinion rack, be equipped with the slips tooth in the slips tooth socket.

The soluble integral slip is made of soluble materials such as magnesium alloy or aluminum alloy and can meet the integral bearing capacity of the slip, and the through hole of the slip seat is cylindrical and is used for being matched with the bottom of a cone of the ball seat, namely the end with the smaller outer diameter. Only one end of the cylindrical slip seat is provided with a toothed plate, a gap is formed between the toothed plates, when the slip seat climbs on the slope surface of the cone, one end of the slip seat, which is provided with the toothed plate, is used for abutting against the lower joint and is acted by the abutting force of the lower joint, the toothed plate on the slip seat can be propped open towards the periphery but cannot be broken until the toothed plate is attached to the inner wall of the sleeve, and the slip teeth are clamped into the inner wall of the sleeve, so that the anchoring function is realized; the end, which is not provided with the toothed plate, is used for abutting against the sealing barrel, the force-transferring end surface of the end is not provided with the gap, so that uniform acting force can be transferred to the sealing barrel, and the damage of the sealing barrel due to nonuniform stress is avoided. The slip tooth groove is formed in the outer wall of the slip seat, the size of the slip tooth is matched with that of the corresponding slip tooth groove, and one part of the slip tooth is exposed out of the slip tooth groove and used for anchoring the slip and the sleeve. The soluble integral slip is simple in structure and convenient to process, a plurality of slip tiles are assembled into the slip without processing a single slip tile, processing and installation procedures are reduced, cost is saved, the slip is not easy to damage in the process of putting the ball seat into a well, and the anchoring performance of the slip is improved; simultaneously, its one end that is used for the sealed section of thick bamboo of butt does not be equipped with the clearance, can transmit even effort for sealed section of thick bamboo, has avoided sealed section of thick bamboo atress inhomogeneous and damage.

Preferably, the through hole inside the slip seat is a funnel-shaped structure, and a funnel pipe portion of the funnel-shaped structure is located at one end of the toothed plate.

The funnel tubular construction divide into funnel body part and funnel pipe part, the slip seat is not equipped with the one end of pinion rack is funnel body part, and its adaptation is in the cone surface of ball seat, increases the biggest contact support surface area. And the size of the funnel pipe part is smaller, the thickness of the corresponding toothed plate is larger, and the pressure bearing capacity of one end of the slip seat, which is provided with the gap, is improved.

Preferably, the slip teeth are of a columnar structure, an included angle between the outer end faces of the slip teeth and the axis of the slip seat is 10-60 degrees, and the outer end faces of the slip teeth are back to the end, provided with the toothed plate, of the slip seat.

The outer end face is the face opposite to the groove bottom face of the slip tooth groove on the slip tooth, and the face and the axis of the slip seat form an inclined plane, so that the contact area between the slip tooth and the sleeve is reduced, the capability of the slip tooth to be extruded into the sleeve is enhanced, and the anchoring capability of the soluble integral slip is better.

Preferably, the slip seat is provided with 6-12 toothed plates, and the slip tooth grooves are uniformly distributed on the toothed plates.

Will the slips tooth socket evenly sets up on the pinion rack, promptly the slips tooth evenly sets up on the pinion rack, works as when the pinion rack atress opens, the better anchoring of slips tooth is gone into in the sleeve pipe, and the anchoring effect of slips is better.

Preferably, the toothed plates are evenly distributed along the circumferential direction of the slip bowl.

The bearing force of the end, provided with the gap, of the slip seat is uniform, and the slip seat is prevented from being damaged.

Preferably, the gap is disposed along an axis of the slip bowl.

And enabling one end provided with the gap to be stressed along the axis direction, and avoiding the slip seat from being damaged.

Preferably, the clearance contains clearance bottom and clearance neck, the clearance bottom is the C-shaped groove, the clearance neck is the bar groove, the opening of clearance bottom with the clearance neck intercommunication, the size of clearance neck is less than the size of clearance bottom.

The C-shaped groove of clearance bottom can be avoided the slip seat atress is concentrated and is damaged, the bar groove of clearance neck the pinion rack is opened, guarantees the normal work of slips, and the processing of being convenient for.

Preferably, the slip teeth are ceramic or ceramic-metal components.

Preferably, the axis of the slip bowl and the axis of its internal through bore are coaxial.

When the slips is installed at the bottom of cone, make the slips along the central axis symmetry of cone, when the ball seat setting, all slips teeth can be simultaneously with the sleeve contact, the atress simultaneously, anchoring effect is better.

Preferably, the gap is a U-shaped groove or an arc-shaped groove, so that the slip seat is prevented from being damaged due to concentrated stress.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the soluble integral slip is simple in structure and convenient to process, a plurality of slip tiles are assembled into the slip without processing a single slip tile, processing and installation procedures are reduced, cost is saved, the slip is not easy to damage in the process of putting the ball seat into a well, and the anchoring performance of the slip is improved; simultaneously, its one end that is used for the sealed section of thick bamboo of butt does not be equipped with the clearance, can transmit even effort for sealed section of thick bamboo, has avoided sealed section of thick bamboo atress inhomogeneous and damage.

Drawings

FIG. 1 is a schematic diagram of a prior art slip.

FIG. 2 is a perspective view of the soluble monolithic slip of example 1;

FIG. 3 is a schematic plan view of the soluble monolithic slip of example 1;

FIG. 4 is a first schematic structural view of the slip bowl of embodiment 1;

FIG. 5 is a cross-sectional view of FIG. 4;

FIG. 6 is a second schematic structural view of the slip bowl described in example 1.

Icon: 11-card tile; 12-cutting a seam; 2-a slip seat; 22-toothed plate; 23-slip gullets; 24-gap; 241-the bottom of the gap; 242-gap neck; 25-slip teeth.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

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.

Example 1

The utility model provides a soluble integral slips, see fig. 2-6, it is including being cylindric slip seat 2, slip seat 2 adopts soluble material to make, like magnesium alloy or aluminum alloy, it can be dissolved in the liquid of corresponding mineralization degree in the pit, and its whole bearing capacity that can satisfy the slips, slip seat 2's inside is equipped with the through-hole along its axis, the through-hole is used for the bottom of the cone of adaptation ball seat, the less one end of external diameter promptly. Just the axis of through-hole with the inside axis of slip seat 2 is coaxial, the inside through-hole of slip seat 2 is for leaking hopper-shaped structure, see fig. 5, funnel pipe structure divide into funnel body part and funnel pipe portion, the funnel pipe portion of leaking hopper-shaped structure is established slip seat 2 is equipped with the one end of pinion rack 22, slip seat 2 is not equipped with the one end of pinion rack 22 is funnel body part, and its adaptation increases the biggest contact surface area of support in the cone surface of ball seat. And the funnel pipe part has a smaller size, and the corresponding toothed plate 22 has a larger thickness, so that the bearing capacity of one end of the slip seat 2, which is provided with the gap 24, is improved.

One end of the slip seat 2 is provided with a plurality of toothed plates 22, specifically, the slip seat 2 is provided with 6 to 12 toothed plates 22, in this embodiment, there are 8 toothed plates 22, 8 toothed plates 22 are uniformly distributed along the circumferential direction of the slip seat 2, a gap 24 is formed between two adjacent toothed plates 22, an opening of the gap 24 is formed in an end face of the slip seat 2, the gap 24 is arranged along an axis of the slip seat 2, the gap 24 is a U-shaped groove or an arc-shaped groove, and the slip seat 2 is prevented from being damaged due to concentrated stress, in this embodiment, the gap 24 is a U-shaped groove, as shown in fig. 2 to 4; of course, the clearance 24 can also be other shapes, as shown in fig. 6, the clearance 24 contains clearance bottom 241 and clearance neck 242, the clearance bottom 241 is the C-shaped groove, the clearance neck 242 is the bar groove, the opening of clearance bottom 241 with clearance neck 242 intercommunication, the size of clearance neck 242 is less than the size of clearance bottom 241, the C-shaped groove of clearance bottom 241 can avoid the 2 atress of slip bowl are concentrated and damage, the bar groove of clearance neck 242 the pinion rack 22 is opened, guarantees the normal work of slips, and is convenient for process.

Be equipped with a plurality of slips tooth groove 23 on the 2 outer walls of slip bowl, it is specific, slips tooth groove 23 evenly distributed is in on the pinion rack 22, in this embodiment, every follow on the pinion rack 22 slip bowl 2 axial is provided with two slips tooth groove 23, just be equipped with a slips tooth 25 in the slips tooth groove 23, the size of slips tooth 25 with correspond the size phase-match of slips tooth groove 23, a part of slips tooth 25 is exposed outside slips tooth groove 23 for realize slips and telescopic anchoring. Specifically, the slip teeth 25 are cylindrical ceramic components or ceramic metal components, in this embodiment, the slip teeth 25 are cylindrical ceramic metal components, an included angle between an outer end face of the slip teeth 25 and an axis of the slip bowl 2 is less than or equal to 60 °, and the outer end face of the slip teeth 25 faces away from one end of the slip bowl 2 where the toothed plate 22 is arranged, the outer end face is a bottom face of the slip teeth 25 opposite to a groove bottom face of the slip tooth groove 23, and the bottom face and the axis of the slip bowl 2 have an inclined angle to form an inclined plane, so that a contact area between the slip teeth 25 and a sleeve is reduced, the capability of the slip teeth 25 extruding into the sleeve is enhanced, and the soluble integral anchoring capability is better.

The utility model provides a soluble integral slips, its cylindric slip seat 2 only one end have the pinion rack 22, and adjacent the pinion rack 22 has clearance 24, when the slip seat 2 climbs on the domatic of cone, the slip seat 2 has the one end of pinion rack 22 is used for butt lower clutch, receives the butt effect of lower clutch, the pinion rack 22 on the slip seat 2 can strut to all around, but can not fracture, until the pinion rack 22 laminates the sleeve pipe inner wall, and the slip tooth 25 card is gone into in the sleeve pipe inner wall, realizes the anchoring function; the end without the toothed plate 22 is used for abutting against the sealing cylinder, the force-transmitting end surface of the end is not provided with the gap 24, uniform acting force can be transmitted to the sealing cylinder, and the sealing cylinder is prevented from being damaged due to nonuniform stress.

The soluble integral slip is simple in structure and convenient to process, a plurality of slip tiles are assembled into the slip without processing a single slip tile, processing and installation procedures are reduced, cost is saved, the slip is not easy to damage in the process of putting the ball seat into a well, and the anchoring performance of the slip is improved; meanwhile, the gap 24 is not arranged at one end of the sealing barrel, which is used for abutting against the sealing barrel, so that uniform acting force can be transmitted to the sealing barrel, and the damage of the sealing barrel due to nonuniform stress is avoided.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a soluble integral slips, its characterized in that, is including being cylindric slip seat (2) and a plurality of slips tooth socket (23), slip seat (2) only one end has a plurality of pinion rack (22), adjacent two clearance (24) have between pinion rack (22), be equipped with slips tooth (25) in slips tooth socket (23).

2. The soluble, integral slip of claim 1, wherein the through-hole inside the slip bowl (2) is funnel shaped with a funnel portion at one end of the tooth plate (22).

3. A soluble integral slip according to claim 1, wherein the slip teeth (25) are of a cylindrical structure, the outer end face of the slip teeth (25) forms an angle of 10-60 ° with the axis of the slip bowl (2), and the outer end face of the slip teeth (25) faces away from the end of the slip bowl (2) where the toothed plate (22) is located.

4. A soluble, integral slip according to any of claims 1-3, wherein the slip bowl (2) comprises 6-12 tooth plates (22), and wherein the slip tooth grooves (23) are evenly distributed on the tooth plates (22).

5. The soluble, unitary slip of claim 4, wherein the tooth plates (22) are evenly distributed circumferentially along the slip bowl (2).

6. The soluble, integral slip of claim 5, wherein said gap (24) is disposed along an axis of said slip bowl (2).

7. The soluble integral slip of claim 6, wherein the gap (24) comprises a gap bottom (241) and a gap neck (242), the gap bottom (241) is a C-shaped channel, the gap neck (242) is a strip-shaped channel, the opening of the gap bottom (241) communicates with the gap neck (242), and the gap neck (242) has a size smaller than the gap bottom (241).

8. The soluble monolithic slip of any of claims 1-3, wherein the slip teeth (25) are ceramic or ceramic-metal components.

9. A soluble, integral slip according to any of claims 1 to 3, wherein the axis of the slip bowl (2) and the axis of its internal through bore are coaxial.

10. The soluble monolithic slip of any of claims 1-3, wherein the gap (24) is a U-shaped or arcuate slot.