CN113047802B - Double-insurance well head device wear-resistant sleeve and taking and delivering tool - Google Patents
Double-insurance well head device wear-resistant sleeve and taking and delivering tool Download PDFInfo
- Publication number
- CN113047802B CN113047802B CN202110445868.2A CN202110445868A CN113047802B CN 113047802 B CN113047802 B CN 113047802B CN 202110445868 A CN202110445868 A CN 202110445868A CN 113047802 B CN113047802 B CN 113047802B
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- pins
- annular groove
- wear
- taking
- pin
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- 239000004576 sand Substances 0.000 claims abstract description 9
- 238000007790 scraping Methods 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims abstract description 3
- 238000005299 abrasion Methods 0.000 description 17
- 238000005553 drilling Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010013082 Discomfort Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
An anti-wear sleeve of a double-safety wellhead device and a taking tool are provided, wherein an annular groove is respectively cut above the middle upper parts of two cylindrical holes with different diameters in the anti-wear sleeve; a transition large chamfer of two cylindrical holes is arranged between the two annular grooves; a limiting plate is welded in the upper annular groove, and a plurality of axial grooves are symmetrically formed at the position from the annular groove to the upper opening of the anti-wear sleeve; the lower annular groove is provided with a plurality of uniformly distributed threaded through holes above the circumferential wall; on the middle upper part of the taking and delivering tool main body and two sections of circumferences with thicker outer diameters, a layer of buckling pins are uniformly distributed respectively: the upper layer is a fixed buckle pin, and the lower layer is a telescopic spring descending buckle pin. A uniformly-distributed sand scraping groove is processed between the uniformly-distributed buckle pins; and the quantity of the fixed buckle pins and the elastic buckle pins is corresponding to the quantity of the axial grooves uniformly distributed at the upper opening of the anti-wear sleeve. Therefore, the wear-resistant sleeve can be taken out by using a conventional fixed buckle pin, and the wear-resistant sleeve with serious wear can be taken out by using an elastic buckle pin quickly and safely.
Description
Technical Field
The invention relates to an auxiliary tool of petroleum machinery and drilling equipment.
Background
Casing heads in the wellhead device are basic components in oil and gas drilling wellhead equipment and play roles of fixing well positions, guiding a drilling machine to perform well drilling, hanging underground casings and connecting other oil or gas production components of the wellhead. Because large steel parts such as a drill bit, a drill rod, a sleeve, other downhole tools and the like need to pass in and out of a precise inner cavity hole of a sleeve head or work in the precise inner cavity hole; in addition, mechanical damage caused by friction and collision is unavoidable due to the actions of mud, sand, drilling cuttings and the like in the drilling process. In addition, when performing fracturing operations through tubing heads in wellhead assemblies, thousands of ultra-high pressure sand-containing fracturing fluids can also severely wear precise inner bore holes in the tubing head. In order not to affect the subsequent installation, mating and sealing of the casing or tubing hanger, wear sleeves are used to protect the precise bore of the casing head and tubing head during operation.
The currently used wear-resistant sleeve and the currently used taking tool of the wellhead device are characterized in that an annular groove is processed above the inner hole wall of the wear-resistant sleeve, and a limiting plate is welded in the annular groove; at the upper opening of the annular groove, a plurality of axial grooves for the buckle pin to enter and exit are symmetrically arranged. A circle of fixed buckling pins are uniformly distributed on the outer circumference of the insertion end of the taking and delivering tool. When the anti-abrasion sleeve is used, the taking tool is connected with the drill rod through threads, a plurality of fixed fastening pins on the taking tool are used, a plurality of axial grooves aligned with the upper opening of the anti-abrasion sleeve are inserted into the annular grooves, and the anti-abrasion sleeve rotates to the limit plate to stop; the anti-abrasion sleeve is lifted by the drill rod and is arranged in an inner cavity hole of the casing head or the oil pipe head, then the drill rod and the taking and delivering tool are rotated, so that uniformly distributed fastening pins slide out from uniformly distributed axial grooves, the drill rod is lifted, and the taking and delivering tool is detached, so that drilling or fracturing operation can be performed. When the wear-resistant sleeve is required to be taken out and the hanger is required to be installed, the taking-out tool is required to be connected with the lower end of the drill rod again, the taking-out tool is extended into the wear-resistant sleeve of the casing head or the inner cavity of the tubing head, the drill rod and the taking-out tool are rotated, uniformly distributed fastening pins enter the annular groove of the wear-resistant sleeve through uniformly distributed axial grooves, the rotation is stopped when the fastening pins touch the limiting plate, and the taking-out tool and the wear-resistant sleeve are pulled out of the inner cavity hole of the casing head or the tubing head together by the drill rod. Its advantages are simple structure and low cost.
However, as shallow, easily produced gas resources in the world are depleted, humans begin to produce deep, difficult to produce oil and gas resources on a large scale. With the development of drilling and production technology, the deeper the oil and gas well is, the longer the drill rod is, the larger the shaking amplitude is, and the longer the working time in the casing head anti-wear sleeve is; in addition, the number of the casing pipes penetrating into the well is increased, and the abrasion of the casing head anti-abrasion sleeve is increased exponentially; when a deep well of several kilometers is drilled, the wear sleeve of its casing head is often worn out to be completely non-planar. In addition, at the end of the fracturing operation, the sand-containing fracturing fluid is also alarming for wear of the wear sleeve in the tubing head. In the prior art, three axial grooves and three buckling pins are adopted for taking and delivering, so that the wear-resistant sleeve is easy to destabilize; the annular groove bearing the grabbing force of the buckle pin is positioned at the upper opening of the wear-resistant sleeve and is a worn disaster area; thirdly, the groove depth of the anti-wear sleeve and the length of the buckle pin are very limited, and the taking-out function of the anti-wear sleeve is extremely easy to lose after serious wear. When the wear-resistant sleeve cannot be taken out due to serious wear, the wear-resistant sleeve becomes an equipment accident, influences the next drilling operation, and causes larger economic loss.
Disclosure of Invention
The invention aims at solving the problems and adopts a new structural design to ensure that the wear-resistant sleeve with serious wear is taken out rapidly and safely so as to prevent equipment accidents.
The invention is used by the mutual matching of the wear-resistant sleeve and the taking and delivering tool, and is characterized in that: an annular groove is respectively cut at the upper middle and upper parts of two cylindrical holes with different diameters in the anti-wear sleeve; a transition large chamfer of two cylindrical holes with different diameters is arranged between the upper annular groove and the lower annular groove; a limiting plate is welded in the upper annular groove, and a plurality of axial grooves are symmetrically formed at the position from the annular groove to the upper opening of the anti-wear sleeve; the lower annular groove is provided with a plurality of uniformly distributed threaded through holes above the circumferential wall; on the middle upper part of the taking and delivering tool main body and two sections of circumferences with thicker outer diameters, a layer of buckling pins are uniformly distributed respectively: the upper layer is a fixed buckle pin, and the lower layer is a telescopic elastic buckle pin. A plurality of axial sand scraping grooves are symmetrically processed between the uniformly distributed buckle pins; the number of the fixed buckle pins and the elastic buckle pins is 3-4, and the specific number of the fixed buckle pins and the elastic buckle pins corresponds to the number of the axial grooves uniformly distributed at the upper opening of the anti-wear sleeve.
Because the invention is based on the existing conventional wear-proof sleeve and the structure of the taking and delivering tool, an annular groove and a plurality of threaded through holes are added in the wear-proof sleeve, and a row of telescopic elastic buckle pins are added on the taking and delivering tool; therefore, the anti-wear sleeve can be installed and taken out by a conventional method of matching the fixed buckle pin with the annular groove with the limiting plate and the axial groove; the telescopic elastic buckle pin on the taking-out tool can be directly inserted into the lower annular groove, and the anti-wear sleeve can be automatically clamped and quickly taken out. The lower annular groove is positioned at the middle part of the anti-abrasion sleeve, so that the anti-abrasion sleeve is rarely abraded; the lower annular groove is deeper and the elastic buckling pin is longer, so that the elastic buckling pin can be effectively buckled; in addition, the lower annular groove is not provided with a plurality of axial grooves which are used as channels for entering and exiting, so that the risk of instability and slipping does not exist; the anti-abrasion sleeve has the double functions of taking out the anti-abrasion sleeve, improves the safety of equipment operation, and is more suitable for deep wells, horizontal wells and fracturing drilling and production operations.
Drawings
FIG. 1 is a schematic view showing a half cross-section of the overall structure of a tool for removing four snap pins from top to bottom in accordance with the present invention;
FIG. 2 is a schematic radial cross-sectional view of resilient snap pins uniformly distributed in the delivery tool at A-A in FIG. 1;
fig. 3 is a schematic overall cross-sectional view of the wear sleeve of the present invention with four axial grooves.
The designations of the component parts in the drawings are as follows:
1. the tool comprises a tool body, 2, a fixed buckle pin, 3, a set screw, 4, an elastic buckle pin, 5, a spring, 6, a scraping groove, 7, a limit screw, 8, an anti-abrasion sleeve, 9, a limit plate, 10 and a threaded through hole.
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
in fig. 1, 2 and 3, the novel anti-wear sleeve and the taking tool are matched with each other for use, and one taking tool part can be matched with a plurality of anti-wear sleeve parts with the same specification and model.
In fig. 1 and 2, the tool component is composed of six parts, namely a tool body 1, a fixed fastening pin 2, a set screw 3, an elastic fastening pin 4, a spring 5 and a limit screw 7. The taking and delivering tool main body 1 is a hollow cylinder part with gradually reduced upper thickness and lower thickness and outer diameter; the upper and lower ends of the central hole which is penetrated up and down are respectively provided with a conical threaded hole with large diameter and a tool withdrawal groove which are connected with the drill rod. A plurality of blind holes are uniformly distributed on the circumference above the cylinder with the thickest outer diameter at the upper part of the taking tool main body 1, and a fixed buckle pin 2 is respectively arranged in the blind holes; a threaded hole with a pit is respectively processed from the upper part of the blind holes to the upper end face of the taking tool main body 1, and a set screw 3 for clamping and fixing the groove of the buckle pin 2 is respectively arranged in the threaded hole with the pit to prevent the set screw from falling off. A plurality of blind holes are uniformly distributed on the circumference of a second thick cylinder with the outer diameter in the middle of the taking tool main body 1, and an elastic buckling pin 4 with a spring 5 is respectively arranged in the blind holes; one side of each blind hole is provided with a threaded hole with a pit, and each threaded hole with a pit is provided with a limit screw 7 inserted into the limit groove of the elastic buckle pin 4 to prevent the limit screw from rotating and falling. The lower part of the tool body 1 is a smooth cylinder with a smaller outer diameter. On the circumference of the middle upper part of the taking tool main body 1 and the two sections of the outer diameters are thicker, a plurality of axial sand scraping grooves 6 are symmetrically processed between the fixed buckling pins 2 and the elastic buckling pins 4 which are uniformly distributed, and the number of the sand scraping grooves 6 is the same as that of the fixed buckling pins 2 or the elastic buckling pins 4, so that sediment is discharged and blocking is prevented.
The fixed buckling pin 2 and the elastic buckling pin 4 are uniformly distributed on the taking tool main body 1, vertically correspond to each other, and the axes of the upper pin and the lower pin are positioned on the same vertical plane; the number of the fixed buckling pins 2 and the elastic buckling pins 4 is 3-4, and the specific number of the fixed buckling pins and the elastic buckling pins corresponds to the number of the axial grooves uniformly distributed at the upper opening of the anti-wear sleeve 8; for the large-diameter wear-resistant sleeve, a structure with 4 buckle pins uniformly distributed is adopted, so that the wear-resistant sleeve has higher reliability. The outer end of the fixed buckle pin 2 is a flat cylinder with a chamfer and a larger diameter, the inner end of the fixed buckle pin is a cylinder with a chamfer and a smaller diameter, and a groove locked by a set screw 3 is cut on the cylinder with the smaller diameter. The elastic buckle pin 4 is a cylinder with the same diameter, the outer end of the elastic buckle pin is provided with an inclined plane reaching the central line, and the inner end of the elastic buckle pin is provided with a blind hole for installing the spring 5; a closed semicircular head limiting groove parallel to the axis is formed in one side of the cylinder and is matched with a vertically opposite limiting screw 7 to limit the axial moving distance and the direction of the outer end inclined plane.
In fig. 3, the wear-resistant sleeve 8 is a hollow cylindrical part, and has a stepped through hole with two large diameters and three large chamfers at the center. A cylindrical hole with the largest diameter is arranged above the step through hole, and the upper edge of the hole is provided with a large chamfer angle of 30-45 degrees so as to facilitate the entering of a taking and conveying tool; an upper annular groove is processed in the middle of the hole, a plurality of axial grooves which are communicated with the upper opening edge of the anti-wear sleeve 8 and have the same groove width are uniformly distributed on the upper part of the annular groove, so that the fixed buckle pins 2 uniformly distributed on the taking and conveying tool can enter and exit the groove; in addition, a limiting plate 9 made of flat iron is welded in the annular groove on the right side of any axial groove so as to facilitate the rotation positioning of the entered fixed buckle pin 2. A cylindrical hole with a diameter inferior to that of the step through hole is arranged below the step through hole, and the upper edge of the hole is provided with a transitional large chamfer between two different cylindrical holes, and the transitional large chamfer is matched with the inclined surface of the elastic buckle pin 4 on the taking tool to generate an axial component force to compress the spring 5; a lower annular groove is processed below the transitional large chamfer, and a plurality of threaded through holes 10 are processed above the circumferential wall of the annular groove so as to compress the elastic buckle pin 4 by a screw with a limited length and separate the anti-wear sleeve 8 from the taking tool; the lower part of the lower annular groove is provided with a smooth hole wall and a large chamfer at the bottom edge. The outer surface of the wear-resistant sleeve 8 is provided with two cylinders with small diameter difference, the upper cylinder is a matching surface with larger diameter and higher precision, and the lower cylinder is a non-contact surface with smaller diameter and poorer precision; a wider groove is cut at the corresponding part of the upper cylinder and the lower annular groove in the central hole, so as to prevent a plurality of discomforts caused by too large matching area; chamfering is processed on the upper and lower sides of the outer surface of the cylindrical body, the joint of the two cylinders with different diameters and the two sides of the wider groove, so that burrs are removed and disassembly are facilitated.
When the anti-abrasion device is used, the conical threaded hole below the taking tool main body 1 is connected with a drill rod, the fixed buckle pin 2 is used for connecting the upper annular groove of the anti-abrasion sleeve 8, and the anti-abrasion sleeve 8 is installed in an inner cavity hole of a casing head or an oil pipe head according to a conventional method to perform drilling and production operations. There are two methods of removing the wear sleeve 8: firstly, the anti-wear sleeve 8 is taken out by a conventional method, namely the fixed buckle pin 2 is installed downwards and matched with an upper annular groove with a limiting plate 9 and an axial groove, the anti-wear sleeve 8 is taken out, and then the anti-wear sleeve is rotated by hands to align and separate the axial groove from the fixed buckle pin 2. Secondly, the conical threaded hole above the taking tool main body 1 is connected with a drill rod, the elastic buckle pin 4 is downwards and directly inserted into the lower annular groove of the anti-abrasion sleeve 8, the anti-abrasion sleeve 8 is automatically clamped and taken out, a plurality of fixed-length screws are screwed into the threaded through holes 10 on the side wall of the lower annular groove, and the elastic buckle pin 4 is compressed to separate the two. In the process, the fixed buckling pin 2 above the taking tool is matched with the upper opening edge of the anti-abrasion sleeve 8, so that the functions of limiting the insertion depth and axially positioning are achieved.
Claims (1)
1. The utility model provides a double-insurance's well head device abrasionproof cover and take off and send instrument combination, this combination is mutually supported by abrasionproof cover and take off and send instrument to use, characterized by: an annular groove is respectively cut at the upper middle and upper parts of two cylindrical holes with different diameters in the anti-wear sleeve; a transition large chamfer of two cylindrical holes with different diameters is arranged between the upper annular groove and the lower annular groove; a limiting plate is welded in the upper annular groove, and a plurality of axial grooves are symmetrically formed at the position from the annular groove to the upper opening of the anti-wear sleeve; the lower annular groove is provided with a plurality of uniformly distributed threaded through holes above the circumferential wall; on the middle upper part of the taking and delivering tool main body and two sections of circumferences with thicker outer diameters, a layer of buckling pins are uniformly distributed respectively: the upper layer is a fixed buckle pin, and the lower layer is a telescopic elastic buckle pin; the fixed buckling pin and the elastic buckling pin are arranged on the main body of the taking and conveying tool uniformly, and correspond to each other vertically, and the axes of the upper pin and the lower pin are positioned on the same vertical plane; the number of the fixed buckle pins and the elastic buckle pins is 3-4, and the specific number of the fixed buckle pins and the elastic buckle pins corresponds to the number of the axial grooves uniformly distributed at the upper opening of the anti-wear sleeve;
a plurality of blind holes are uniformly distributed on the circumference of a second thick cylinder with the outer diameter at the middle part of the taking tool main body, and an elastic buckle pin with a spring is respectively arranged in the blind holes; one side of each blind hole is respectively provided with a threaded hole with a pit, and each threaded hole with a pit is internally provided with a limit screw inserted into the limit groove of the elastic buckle pin; the lower part of the taking and delivering tool main body is a smooth cylinder with a thinner outer diameter;
on the circumference of the middle upper part of the taking tool main body and the two sections of the outer diameters are thicker, a plurality of axial sand scraping grooves are symmetrically processed between the fixed buckling pins and the elastic buckling pins which are uniformly distributed, and the number of the sand scraping grooves is the same as that of the fixed buckling pins or the elastic buckling pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110445868.2A CN113047802B (en) | 2021-04-20 | 2021-04-20 | Double-insurance well head device wear-resistant sleeve and taking and delivering tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110445868.2A CN113047802B (en) | 2021-04-20 | 2021-04-20 | Double-insurance well head device wear-resistant sleeve and taking and delivering tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113047802A CN113047802A (en) | 2021-06-29 |
| CN113047802B true CN113047802B (en) | 2024-01-30 |
Family
ID=76520110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110445868.2A Active CN113047802B (en) | 2021-04-20 | 2021-04-20 | Double-insurance well head device wear-resistant sleeve and taking and delivering tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113047802B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106432Y (en) * | 2007-08-20 | 2008-08-27 | 四川内江宏生石油机械有限公司 | Wear prevention sleeve of casing head as well as special sending, taking-up tool |
| CN201236652Y (en) * | 2008-06-06 | 2009-05-13 | 中国海洋石油总公司 | Feeding and extracting tool of guiding device |
| CN202381002U (en) * | 2011-12-06 | 2012-08-15 | 中国石油天然气股份有限公司 | Tool for taking out and placing in wearing bush while drilling |
| CN202882858U (en) * | 2012-10-18 | 2013-04-17 | 宝鸡石油机械有限责任公司 | Elastic shear pin device |
| CN207920561U (en) * | 2018-02-27 | 2018-09-28 | 江苏宏泰石化机械有限公司 | A kind of Combined casing head abrasionproof bushing taking-up tool |
| CN108252667B (en) * | 2018-02-27 | 2023-11-21 | 江苏宏泰石化机械有限公司 | Combined casing head wear-resistant bushing taking-out tool |
-
2021
- 2021-04-20 CN CN202110445868.2A patent/CN113047802B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113047802A (en) | 2021-06-29 |
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