CN214886963U

CN214886963U - Integrated oil pipe and casing device

Info

Publication number: CN214886963U
Application number: CN202121807902.8U
Authority: CN
Inventors: 姜玉虎; 张庭高; 袁俊; 陆中平
Original assignee: JIANGSU HONGTAI PETROCHEMICAL MACHINERY CO Ltd
Current assignee: JIANGSU HONGTAI PETROCHEMICAL MACHINERY CO Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2021-11-26
Anticipated expiration: 2031-08-04

Abstract

The utility model relates to an integration oil pipe, sleeve pipe device belongs to oil gas exploitation equipment technical field. The integrated oil pipe and casing device comprises a base and assembly components, wherein the base is sequentially provided with a plurality of assembly components in a stacking mode from bottom to top, and a slip hanger or a casing hanger is arranged in a central hole in the axial direction of the assembly components. According to the integrated oil pipe and casing pipe device, under different operation conditions, when the oil pipe and the casing pipe need to be switched, the slip hanger and the casing pipe hanger can be directly exchanged, and the whole structure is not required to be completely replaced, so that the oil pipe or the casing pipe can be hung and assembled, the switching process can be effectively simplified, and time and labor are saved; the problems that the existing oil pipe head and the existing casing head are time-consuming and labor-consuming in replacement operation, and the process is complicated are solved.

Description

Integrated oil pipe and casing device

Technical Field

The utility model relates to an integration oil pipe, sleeve pipe device belongs to oil gas exploitation equipment technical field.

Background

The casing and tubing device is important equipment for oil and gas exploitation, is mainly used for connecting casing strings and tubing strings, sealing annular spaces among layers of casing strings or among tubing strings, controlling pressure of a production wellhead, adjusting wellhead devices and wellhead flow during oil extraction, can also be used for special operations such as acidizing fracturing, water injection, testing and the like, and can meet the requirements of sealing reliability and working safety under different working conditions. At present, after oil and gas production is completed, oil pipe casing heads used at home and abroad are switched between oil pipes and casings to continue operation, the switching can be completed only by replacing the integral structures of the casing heads and the oil pipe heads, and production is continued.

Disclosure of Invention

The utility model aims to provide a: the integrated oil pipe casing head is convenient to operate, time-saving and labor-saving in replacement operation, and capable of effectively simplifying the replacement process so as to solve the problems that the existing oil pipe head and the existing casing head are time-consuming and labor-consuming in replacement operation, and the process is complicated.

The technical scheme of the utility model is that:

the utility model provides an integration oil pipe, bushing apparatus, includes base and assembly subassembly, by supreme a plurality of assembly subassemblies of installing in proper order down, its characterized in that of stacking gradually on the base: and a slip hanger or a casing hanger is arranged in an axial central hole of the assembling component.

The slip hanger comprises a slip seat, slips, a pressing plate and a slip sealing element, wherein the slip seat is cylindrical, the slips are arranged on the inner wall of the slip seat, the pressing plate is arranged on the top end face of the slip seat through a fixing bolt, and the slip sealing element is arranged between the pressing plate and the slip seat.

And an assembling shoulder is arranged on the circumference of the slip seat.

The casing hanger comprises a hanger body, a casing sealing element, a support ring and a tightening nut, wherein the hanger body is cylindrical, an outer flange is arranged on the circumference of the hanger body, and the casing sealing element, the support ring and the tightening nut are sequentially sleeved on the hanger body below the outer flange from top to bottom.

The inner walls of the two end heads of the hanger body are respectively provided with internal threads.

And the fastening nut is in threaded connection with the hanger body, a cone end fastening screw is installed on the fastening nut through threads, and the cone end fastening screw penetrates through the fastening nut and is connected with the hanger body in an abutting mode.

The assembly component comprises a four-way body, a connecting valve, a pressure gauge and a screw thread flange, wherein the connecting valve is symmetrically arranged on the four-way body, the pressure gauge is arranged on the outlet of the connecting valve at one side of the four-way body through the instrument flange, and the screw thread flange is fixedly arranged on the outlet of the connecting valve at the other side of the four-way body; the four-way body is fixedly connected through a fixing bolt; the assembly component is in threaded connection with the base through the four-way body.

The four-way connector is characterized in that a limiting flange is arranged on the inner wall of a central hole of the four-way connector body, and the top end of the limiting flange is connected with the bottom end of the assembly shoulder or the bottom end of the support ring in an abutting mode.

The four-way valve is characterized in that jackscrews are symmetrically arranged on the four-way valve body, the ends of the jackscrews extend into a central hole of the four-way valve body, and the ends of the jackscrews extending into the central hole of the four-way valve body are connected with the top end of the pressure plate or the top end of the outer flange in an abutting mode.

The beneficial effects of the utility model reside in that:

under different operating conditions, when an oil pipe and a casing pipe need to be switched, the slip hanger and the casing pipe hanger can be directly exchanged, and the whole structure is not required to be completely replaced, so that the oil pipe or the casing pipe can be hung and assembled, the switching process can be effectively simplified, and time and labor are saved; compared with the prior art, the replacement process reduces a large amount of workload and production stop loss, the cost is reduced by 2.5 times, the operation time of field replacement is reduced, the operation time is only 0.2 time that of the prior operation, the working strength is reduced to 1/4, the safety risk brought by the prior replacement process is reduced, and the problem of environmental pollution of a working site caused by all replacement devices is greatly improved; the problems that the existing oil pipe head and the existing casing head are time-consuming and labor-consuming in replacement operation, and the process is complicated are solved.

Drawings

FIG. 1 is a schematic view of the slip hanger assembly of the present invention;

FIG. 2 is an assembled schematic view of the casing hanger of the present invention;

FIG. 3 is a schematic structural view of the assembly of the present invention;

FIG. 4 is a schematic view of the slip hanger of the present invention;

fig. 5 is a schematic view of the construction of the casing hanger of the present invention.

In the figure: 1. the base, 2, the slip seat, 3, the slips, 4, the clamp plate, 5, the slips sealing member, 6, the assembly circular bead, 7, the hanger body, 8, the sleeve pipe sealing member, 9, the support ring, 10, the jam nut, 11, the outward flange, 12, awl end holding screw, 13, the cross body, 14, the connecting valve, 15, the manometer, 16, the screw thread flange, 17, the instrument flange, 18, limit flange, 19, jackscrew.

Detailed Description

This integration oil pipe, the bushing apparatus includes base 1 and assembly subassembly, stack gradually and install a plurality of assembly subassemblies from bottom to top on the base 1, install slips hanger or casing hanger in the axial centre bore of assembly subassembly, switch to the sheathed tube in-process at oil pipe, only need with slips hanger by the assembly subassembly after tearing out pack into the casing hanger, need not change the assembly subassembly can hang the assembly through the casing hanger to the casing, compare from this in current switching mode (change the casing head, the overall structure of oil pipe head) can effectively simplify the switching process, and greatly reduced intensity of labour, reduce the time of switching used, and then effectively reduce a large amount of work load and the loss of stopping production in the change process.

The slip hanger is composed of a slip seat 2, slips 3, a pressing plate 4 and a slip sealing element 5, wherein the slip seat 2 is cylindrical, the slips 3 are arranged on the inner wall of the slip seat 2, the inner surface of the slips 3 is uniformly provided with clamping teeth, and the slips 3 can effectively increase the friction force between the slips 3 and an oil pipe through the clamping teeth, so that the oil pipe can be tightly clamped by the slips 3 when the oil pipe is assembled, and the oil pipe is hung and assembled; when an oil pipe is assembled, the slips 3 are contracted inwards under the action of the inner conical surface of the slip seat 2, so that the slips 3 and the oil pipe are extruded, the oil pipe is hung by the slips 3 through the self gravity of the oil pipe, and when the oil pipe is lifted, the slip seat 2 does not extrude the slips 3 any more, so that the slips 3 are easily separated from the oil pipe; the top end face of the slip seat 2 is provided with a pressing plate 4 through a fixing bolt, a slip sealing element 5 is arranged between the pressing plate 4 and the slip seat 2, and the pressing plate 4 has the function that when the slip hanger is sealed with an oil pipe, the pressing plate 4 extrudes the slip sealing element 5 by screwing the fixing bolt on the pressing plate 4, so that the slip sealing element 5 protrudes outwards, and the slip seat 2 is respectively sealed with the oil pipe and the inner wall of a central hole of an assembly component, thereby sealing the outer side of the oil pipe; an assembly shoulder 6 is provided on the circumference of the slip bowl 2.

The casing hanger is composed of a hanger body 7, a casing sealing element 8, a support ring 9 and a clamping nut 10, wherein the hanger body 7 is cylindrical, internal threads are respectively arranged on the inner walls of the two end heads of the hanger body 7, so that when the casing is assembled, the casing is in threaded connection with the casing through the internal threads, the casing is further hung and assembled, and meanwhile, the casing and the hanger body 7 are sealed; an outer flange 11 is arranged on the circumference of the hanger body 7, a sleeve sealing piece 8, a support ring 9 and a clamping nut 10 are sequentially sleeved on the hanger body 7 below the outer flange 11 from top to bottom, the clamping nut 10 is in threaded connection with the hanger body 7, a cone-end set screw 12 is installed on the clamping nut 10 in a threaded mode, the cone-end set screw 12 penetrates through the clamping nut 10 to be connected with the hanger body 7 in an abutting mode, the position of the clamping nut 10 is limited through the cone-end set screw 12, and the clamping nut 10 is not prone to loosening from the hanger body 7; the clamping nut 10 is used for limiting the positions of the support ring 9 and the sleeve sealing piece 8, so that the support ring 9 and the sleeve sealing piece 8 cannot deviate, and further, when the support ring 9 and the sleeve sealing piece 8 are extruded, the support ring 9 and the sleeve sealing piece 8 cannot deflect, so that the sleeve sealing piece 8 is prevented from being damaged, and meanwhile, the clamping nut 10 can provide a pre-tightening force for the support ring 9 and the sleeve sealing piece 8, so that the sleeve sealing piece 8 is ensured to be in a compression state.

The assembly component comprises a four-way body 13, a connecting valve 14, a pressure gauge 15 and a screw thread flange 16, wherein the connecting valve 14 is symmetrically arranged on the four-way body 13, and the pressure gauge 15 is arranged on an outlet of the connecting valve 14 at one side of the four-way body 13 through an instrument flange 17 so as to display the pressure in the four-way body 13; a screw thread flange 16 is fixedly arranged on an outlet of a connecting valve 14 on the other side of the four-way body 13 so as to be connected with a pipeline; the four-way body 13 is fixedly connected through a fixing bolt; the assembly component is in threaded connection with the base 1 through the four-way body 13; a limiting flange 18 is arranged on the inner wall of a central hole of the four-way body 13, and the top end of the limiting flange 18 is connected with the bottom end of the assembling shoulder 6 or the bottom end of the support ring 9 in an abutting mode; the four-way body 13 is symmetrically provided with jackscrews 19, the ends of the jackscrews 19 extend into the central hole of the four-way body 13, and the ends of the jackscrews 19 extending into the central hole of the four-way body 13 are connected with the top end of the pressure plate 4 or the top end of the outer flange 11 in an abutting mode; the limiting flange 18 is used for matching with the jackscrew 19 to limit the position of the slip seat 2 or the hanger body 7 and further limit the position of the slip hanger or the casing hanger, so that the slip hanger or the casing hanger is fixed in the four-way body 13, and further the slip hanger or the casing hanger is assembled with the assembly component.

When the integrated oil pipe and casing device is switched (for example, when the oil pipe is switched to the casing), the four-way body 13 is disassembled from top to bottom, and after the four-way body 13 is disassembled, the jackscrew 19 and the fixing bolt on the pressure plate 4 are loosened, so that the slip sealing element 5 is loosened; after the slip sealing element 5 is loosened, the oil pipe is lifted up and taken out; after the oil pipe is taken out, the slip hanger is taken out from the four-way body 13 of the assembly component; after the slip hanger is taken out, connecting the casing with the casing hanger; after the connection of the casing hanger is finished, inserting the casing and the casing hanger into the four-way body 13 of the assembly, enabling a support ring 9 on a hanger body 7 of the casing hanger to abut against a limiting flange 18 of the four-way body 13, extruding the support ring 9 and a casing sealing element 8 through the gravity of the casing, extruding and deforming the casing sealing element 8, and further sealing a central hole of the hanger body 7 and a central hole of the four-way body 13; after the support ring 9 is in place, the assembly and the jack screw 19 are restored one by one.

According to the integrated oil pipe and casing pipe device, under different operation conditions, when the oil pipe and the casing pipe need to be switched, the slip hanger and the casing pipe hanger can be directly exchanged, and the whole structure is not required to be completely replaced, so that the oil pipe or the casing pipe can be hung and assembled, the switching process can be effectively simplified, and time and labor are saved; compared with the prior art, the replacement process reduces a large amount of workload and production stop loss, the cost is reduced by 2.5 times, the operation time of field replacement is reduced, the operation time is only 0.2 time that of the prior operation, the working strength is reduced to 1/4, the safety risk brought by the prior replacement process is reduced, and the problem of environmental pollution of a working site caused by all replacement devices is greatly improved; the problems that the existing oil pipe head and the existing casing head are time-consuming and labor-consuming in replacement operation, and the process is complicated are solved.

Claims

1. The utility model provides an integration oil pipe, bushing apparatus, includes base (1) and assembly subassembly, by supreme a plurality of assembly subassemblies of installing in proper order down on base (1), its characterized in that: and a slip hanger or a casing hanger is arranged in an axial central hole of the assembling component.

2. The integrated tubing and casing device of claim 1, wherein: the slips hanger comprises a slip seat (2), slips (3), a pressing plate (4) and a slip sealing element (5), wherein the slip seat (2) is cylindrical, the slips (3) are arranged on the inner wall of the slip seat (2), the pressing plate (4) is arranged on the top end face of the slip seat (2) through a fixing bolt, and the slip sealing element (5) is arranged between the pressing plate (4) and the slip seat (2).

3. The integrated tubing and casing assembly of claim 2, wherein: and an assembling shoulder (6) is arranged on the circumference of the slip seat (2).

4. The integrated tubing and casing device of claim 1, wherein: the casing hanger comprises a hanger body (7), a casing sealing element (8), a support ring (9) and a clamping nut (10), wherein the hanger body (7) is cylindrical, an outer flange (11) is arranged on the circumference of the hanger body (7), and the hanger body (7) below the outer flange (11) is sequentially sleeved with the casing sealing element (8), the support ring (9) and the clamping nut (10) from top to bottom.

5. The integrated tubing and casing device of claim 4, wherein: the inner walls of the two end heads of the hanger body (7) are respectively provided with internal threads.

6. The integrated tubing and casing device of claim 4, wherein: and lock nut (10) and hanger body (7) threaded connection, and lock nut (10) are gone up the screw thread and are installed awl end holding screw (12), and awl end holding screw (12) pass and lock nut (10) and support with hanger body (7) and lean on to be connected.

7. The integrated tubing and casing device of claim 1, wherein: the assembly component is composed of a four-way body (13), a connecting valve (14), a pressure gauge (15) and a screw thread flange (16), the connecting valve (14) is symmetrically installed on the four-way body (13), the pressure gauge (15) is installed on an outlet of the connecting valve (14) on one side of the four-way body (13) through an instrument flange (17), and the screw thread flange (16) is fixedly installed on an outlet of the connecting valve (14) on the other side of the four-way body (13); the four-way body (13) is fixedly connected through a fixing bolt; the assembly component is in threaded connection with the base (1) through the four-way body (13).

8. The integrated tubing and casing device of claim 7, wherein: the four-way valve is characterized in that a limiting flange (18) is arranged on the inner wall of a central hole of the four-way valve body (13), and the top end of the limiting flange (18) is connected with the bottom end of the assembling shoulder (6) or the bottom end of the supporting ring (9) in an abutting mode.

9. The integrated tubing and casing device of claim 7, wherein: the four-way connecting structure is characterized in that jackscrews (19) are symmetrically arranged on the four-way body (13), the ends of the jackscrews (19) extend into a central hole of the four-way body (13), and the ends of the jackscrews (19) extending into the central hole of the four-way body (13) are connected with the top end of the pressing plate (4) or the top end of the outer flange (11) in an abutting mode.