CN220979415U - Integrated tool for removing wellhead flange and backing ring - Google Patents
Integrated tool for removing wellhead flange and backing ring Download PDFInfo
- Publication number
- CN220979415U CN220979415U CN202322849605.5U CN202322849605U CN220979415U CN 220979415 U CN220979415 U CN 220979415U CN 202322849605 U CN202322849605 U CN 202322849605U CN 220979415 U CN220979415 U CN 220979415U
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- chuck
- backing ring
- clamp tooth
- wellhead flange
- tool
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- 210000000883 ear external Anatomy 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 4
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 3
- 210000003128 head Anatomy 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model belongs to the technical field of drilling safety, and particularly relates to an integrated tool for removing a wellhead flange and a backing ring, which comprises the following components: the split design is adopted, and the split design comprises a chuck, two height screws, two cross arms, two anti-collision limit standard hammers, two clamping screws and 4 handwheels, wherein the chuck is formed by two chuck halves which are symmetrical with each other and is used for clamping a wellhead flange and a backing ring; the chuck flap includes: the inner cambered surface side of the semicircular arc disc is provided with a semicircular arc clamp tooth structure; the clamp tooth structure adopts a double-step design, an upper step clamp tooth cambered surface of the clamp tooth structure is matched with the outer circumference of a wellhead flange to be removed, and a lower step clamp tooth cambered surface of the clamp tooth structure is matched with the outer circumference of a backing ring to be removed. The integrated tool can be used for rapidly taking out the wellhead flange and the backing ring in operation, is light in weight design, high in strength and convenient to operate, and can meet the emergency use of all wells in the northwest oilfield work area.
Description
Technical Field
The utility model belongs to the technical field of drilling safety, and particularly relates to an integrated tool for removing a wellhead flange and a backing ring.
Background
The well blowout out-of-control wellhead is cut and old flange bolts are removed, the wellhead removal operation of the old flange is needed, a crane and a steel wire rope are adopted for hanging and moving by a special hinge fork lifting tool for the oil gas wellhead flange, and the operation defects are as follows: 1. the steel wire rope and the crane are positioned above the wellhead, and the high-speed oil and gas flow impact is difficult to position; 2. if the wellhead is ignited, the steel wire rope is easy to burn out; 3. when hoisting is carried out, if the wellhead is blocked, the wire rope bounces at the moment of detachment, so that personnel and equipment are secondarily injured.
The hydraulic device for removing the flange is similar to the working principle of a hydraulic clamp, the old wellhead is removed, and because the device is not provided with a buffer mechanism, stress concentration is easy to generate when the wellhead is clamped, the wellhead or the clamping device is damaged, the centering requirement is very high, and the technology is still immature.
After the old flange is taken away, two operators are required to clamp the backing ring from the backing ring groove by using two backing ring clamping devices, and a third operator shears the backing ring by using a hydraulic shear, so that the backing ring is made of No. 8 steel or No. 10 steel, and has the advantages of low carbon content, low hardness, large thickness, great damage to the hydraulic shear, low shearing efficiency, long operation time and extremely dangerous ignition condition of the operators for a long time. In the out-of-control emergency operation process of blowout, after the wellhead is cut, wellhead operators cannot take out the steel ring rapidly, safely and effectively when the residual flange and the backing ring are removed.
Disclosure of utility model
The utility model solves the problem that operators cannot quickly, safely and effectively take out the backing ring and the flange when removing the residual flange and the backing ring after the wellhead is cut in the process of the out-of-control emergency operation in the prior art, and provides an integrated tool for removing the wellhead flange and the backing ring, which can quickly take out the wellhead flange and the backing ring at the same time, thereby greatly improving the operation efficiency, shortening the operation time of the operators and ensuring the safety of the operators.
The technical scheme of the utility model is as follows:
An integrated tool for removing a wellhead flange and backing ring, comprising: the chuck 1 for clamping a wellhead flange and a backing ring, which is composed of two chuck petals symmetrical with each other, is vertically and symmetrically arranged on the chuck 1, is far away from the center of the chuck 1, is provided with two height screws 2, the bottoms of which are in threaded rotation connection with the chuck 1, two cross arms 3, two anti-collision limit standard hammers 8, two clamping screws 5 and 4 handwheels 4, wherein the two cross arms 3 are provided with sliding grooves which extend oppositely in the horizontal direction and are fixedly connected through nuts, the two anti-collision limit standard hammers 8 respectively penetrate through the sliding grooves from the lower part and are fixedly connected with one ends, close to one another, of the two cross arms 3 through the nuts, are used for fixedly connecting the same ends of the two chuck petals of the chuck 1, and the 4 handwheels 4 are connected with the outer ends of the clamping screws 5 and are used for clamping the chuck 1;
The chuck flap includes: the two semicircular arc discs 7, wherein semicircular arc clamp tooth structures 6 are arranged on the inner cambered surface sides of the semicircular arc discs 7; the clamp tooth structure 6 adopts a double-step design, the cambered surface of an upper step clamp tooth of the clamp tooth structure 6 is matched with the outer circumference of a wellhead flange to be removed, and the cambered surface of a lower step clamp tooth of the clamp tooth structure 6 is matched with the outer circumference of a backing ring to be removed.
The center of the chuck 1 far away from the chuck is the middle position of the outer cambered surface of the semicircular arc disc 7, a screw rod mounting seat 10 is fixedly arranged on the center of the semicircular arc disc, a threaded hole with threads is formed in the screw rod mounting seat 10, and threads on the inner surface of the threaded hole are matched with threads of the height screw rod 2.
Preferably, the outer ear structures 9 are symmetrically arranged on two sides of the semicircular arc-shaped disc 7; the outer ear structure 9 is provided with an outer ear hole, and the clamping screw 5 respectively penetrates through the outer ear hole connecting chuck 1 of the outer ear structure 9 on the semicircular arc disc 7 at the same end.
The hand wheels 4 are symmetrically distributed at two ends of the clamping screw 5.
The shaft sleeve of the hand wheel 4 is provided with internal threads, and the internal threads are matched with the threads of the clamping screw 5; one end of the shaft sleeve of the hand wheel 4 is connected with the outer ear structure 9 of the chuck 1 through a bearing.
Preferably, the anti-collision limit standard hammer 8 is internally provided with a spring structure.
The lower part of the anti-collision limit standard hammer 8 is attached to the upper surface of the wellhead flange to be removed.
The cross arm 3 slides up and down on the height screw rod 2 through a chute.
Preferably, the diameter of the lower step jaw cambered surface of the jaw structure 6 is slightly smaller than the outer diameter of the backing ring.
Preferably, the jaw structure 6 is made of wedge-shaped ultrathin high-strength materials; the ultrathin high-strength material comprises high-carbon steel.
The beneficial effects are that:
The utility model provides an integrated tool for removing a wellhead flange and a backing ring, which is used for clamping the wellhead flange and the backing ring, wherein a clamp tooth structure 6 of the clamp tooth structure 6 adopts a double-step design, an upper step clamp tooth cambered surface of the clamp tooth structure 6 is matched with the outer circumference of the wellhead flange to be removed, a lower step clamp tooth cambered surface of the clamp tooth structure 6 is matched with the outer circumference of the backing ring to be removed, a natural gap formed by steps of the upper flange and the lower flange is utilized to wedge the flange gap until the backing ring is clamped, a set of clamping apparatus clamps simultaneously clamp the wellhead flange and the backing ring, the wellhead flange and the backing ring can be quickly taken out in operation, the operation efficiency is greatly improved, the operation time of operators is shortened, the safety of the operators is ensured, and the problem that the operators cannot quickly, safely and effectively take out the backing ring and the flange when the residual flange and the backing ring are removed after the wellhead is cut in the process of out of the well blowout out of the prior art; meanwhile, the well head emergency working procedure is simplified, the safety and timeliness are improved, the emergency capacity is promoted to be improved, the treatment procedure is optimized, the integrated tool is light in weight design, high in strength and convenient to operate, and all wells in the northwest oilfield working area can be used in an emergency mode. In addition, the movable connection is fixed between each part of the integrated tool, the disassembly is convenient, and the proper chuck 1 can be replaced according to the specification of the removed flange in actual operation.
The anti-collision limit standard hammer 8 is internally provided with a spring structure, so that the standard hammer can be used for referencing when being lowered in place, and the flange can be ensured to move upwards freely when being split; the lower part of the anti-collision limit standard hammer 8 is attached to the upper surface of the wellhead flange to be removed, personal injury caused by sudden ejection of the upper flange due to wellhead flaming is prevented, and the safety of operation is further improved.
The diameter corresponding to the lower step clamp tooth cambered surface of the clamp tooth structure 6 is slightly smaller than the outer diameter of the backing ring, so that the backing ring can be clamped conveniently.
The clamp tooth structure 6 is made of wedge-shaped ultrathin high-strength materials, so that the clamp tooth structure is convenient to wedge into a flange gap until a backing ring is clamped.
Drawings
Fig. 1 is a schematic view of the overall structure of the present utility model.
FIG. 2 is a schematic view of the working state of the integrated tool of the present utility model.
In the figure: 1. a chuck; 2. a height screw; 3. a cross arm; 4. a hand wheel; 5. clamping a screw; 6. a clamp tooth structure; 7. a semicircular arc disc; 8. anti-collision limit standard hammer; 9. an outer ear structure; 10. and a screw rod mounting seat.
Detailed Description
The technical scheme of the utility model will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the following embodiments are only some, but not all, of the embodiments of the present utility model.
An integrated tool for removing a wellhead flange and backing ring, as shown in fig. 1-2, comprising: the chuck 1 for clamping a wellhead flange and a backing ring, which is composed of two chuck petals symmetrical with each other, is vertically and symmetrically arranged on the chuck 1, is far away from the center of the chuck 1, is provided with two height screws 2, the bottoms of which are in threaded rotation connection with the chuck 1, two cross arms 3, two anti-collision limit standard hammers 8, two clamping screws 5 and 4 handwheels 4, wherein the two cross arms 3 are provided with sliding grooves which extend oppositely in the horizontal direction and are fixedly connected through nuts, the two anti-collision limit standard hammers 8 respectively penetrate through the sliding grooves from the lower part and are fixedly connected with one ends, close to one another, of the two cross arms 3 through the nuts, are used for fixedly connecting the same ends of the two chuck petals of the chuck 1, and the 4 handwheels 4 are connected with the outer ends of the clamping screws 5 and are used for clamping the chuck 1;
The chuck flap includes: the two semicircular arc discs 7, wherein semicircular arc clamp tooth structures 6 are arranged on the inner cambered surface sides of the semicircular arc discs 7; the clamp tooth structure 6 adopts a double-step design, the cambered surface of an upper step clamp tooth of the clamp tooth structure 6 is matched with the outer circumference of a wellhead flange to be removed, and the cambered surface of a lower step clamp tooth of the clamp tooth structure 6 is matched with the outer circumference of a backing ring to be removed; the diameter corresponding to the cambered surface of the lower step clamp tooth of the clamp tooth structure 6 is slightly smaller than the outer diameter of the backing ring; the clamp tooth structure 6 is made of wedge-shaped ultrathin high-strength materials; the ultrathin high-strength material comprises high-carbon steel.
The center part of the chuck 1 far away from the center of the chuck is the middle position of the outer cambered surface of the semicircular arc disc 7, a screw rod mounting seat 10 is fixedly arranged on the center part, a threaded hole with internal threads is formed in the screw rod mounting seat 10, and the threads on the inner surface of the threaded hole are matched with the threads of the height screw rod 2; the bottom of the height screw 2 is vertically fixed on the screw mounting seat 10 through a threaded hole rotating connection.
Outer ear structures 9 are symmetrically arranged on two sides of the semicircular arc-shaped disc 7; the outer ear structure 9 is provided with an outer ear hole, and the clamping screw 5 respectively penetrates through the outer ear hole connecting chuck 1 of the outer ear structure 9 on the semicircular arc disc 7 at the same end.
The hand wheels 4 are symmetrically distributed at two ends of the clamping screw 5; the shaft sleeve of the hand wheel 4 is provided with internal threads, and the internal threads are matched with the threads of the clamping screw 5; the axle sleeve one end of hand wheel 4 is connected with chuck 1 concha structure 9 through the bearing, hand wheel 4 rotates to outer ear structure 9 one side and can realize being close to each other of two chuck petals, tightens up chuck 1, hand wheel 4 rotates to keeping away from concha structure 9 one side and can realize keeping away from each other of two chuck petals, loosens chuck 1.
The anti-collision limit standard hammer 8 is internally provided with a spring structure; the lower part of the anti-collision limit standard hammer 8 is attached to the upper surface of the wellhead flange to be removed.
The cross arm 3 slides up and down through the chute in the height screw rod 2, adjusts the height, guarantees the lower part of the spacing mark hammer 8 of anticollision is laminated mutually with the upper surface of the well head flange that will remove.
The specific using method of the integrated tool for removing the wellhead flange and the backing ring is as follows:
At the beginning, chuck 1 is in the unclamping state, and two chuck flaps keep away from each other, after the well head centering, will integrated instrument is transferred to appointed position, adjusts the position of cross arm 3 on high screw rod 2 for after crashproof spacing mark hammer 8 passes perpendicularly and bores the hole on the flange of adopting integration cross below, hugs closely the upper surface of the well head flange that needs to remove, and at this moment, the cross arm 3 on both sides is embraced the upper surface of the flange of integration cross below from both sides and is played fixed effect, and the both sides operating personnel rotates hand wheel 4 simultaneously and tightens up chuck 1, makes clamp tooth structure 6 wedge type clamp and is embraced the well head flange that needs to remove in the outside clamp when showing the rim that needs to remove, realizes waiting to remove well head flange and rim, presss from both sides tightly and locks when adopting wire rope to hang in the drilling of digging the rig and adopting the integration cross that the rig soon, is once only lifted off the well head by the rig with remaining well head flange.
All be swing joint between each part of integrated instrument, consequently the operation personnel just can realize the change of chuck 1 through simple operation, and the technicians is different according to well head flange and backing ring model, corresponds several models and in order to satisfy different well head flange demands, and the operation personnel can be according to well head flange and backing ring model change suitable chuck 1.
Claims (10)
1. An integrated tool for removing a wellhead flange and backing ring, comprising: the chuck comprises a chuck (1) which is composed of two chuck petals and is used for clamping a wellhead flange and a backing ring, two height screws (2) which are vertically and symmetrically arranged on the chuck (1) and are far away from the center of the chuck (1) and are in threaded rotation connection with the chuck (1), two cross arms (3) which are provided with sliding grooves which extend in opposite directions in the horizontal direction and are fixedly connected with the sliding grooves through nuts, two anti-collision limit standard hammers (8) which are fixedly connected with one ends of the two cross arms (3) close to each other through the nuts from the lower part and are used for fixing the two chuck petals of the chuck (1), two clamping screws (5) which are fixedly connected with the same ends of the two chuck petals of the chuck (1) respectively, and 4 handwheels (4) which are connected with the outer ends of the clamping screws (5) and are used for clamping the chuck (1);
The chuck flap includes: the two semicircular arc discs (7), wherein semicircular arc clamp tooth structures (6) are arranged on the inner cambered surface sides of the semicircular arc discs (7); the clamp tooth structure (6) adopts a double-step design, an upper step clamp tooth cambered surface of the clamp tooth structure (6) is matched with the outer circumference of a wellhead flange to be removed, and a lower step clamp tooth cambered surface of the clamp tooth structure (6) is matched with the outer circumference of a backing ring to be removed.
2. The integrated tool for removing the wellhead flange and the backing ring according to claim 1, wherein the center part of the chuck (1) far away from the chuck is the middle position of the outer cambered surface of the semicircular arc disc (7), a screw mounting seat (10) is fixedly arranged on the center part, a threaded hole with internal threads is arranged on the screw mounting seat (10), and the threads on the inner surface of the threaded hole are matched with the threads of the height screw (2).
3. The integrated tool for removing a wellhead flange and backing ring according to claim 1 or 2, characterized in that the semi-circular arc disc (7) is provided with outer ear structures (9) symmetrically on both sides; the outer ear structure (9) is provided with an outer ear hole, and the clamping screw rods (5) respectively penetrate through the outer ear hole connecting chuck (1) of the outer ear structure (9) on the semicircular arc disc (7) at the same end.
4. A tool for removing a wellhead flange and backing ring in accordance with claim 3, wherein the hand wheels (4) are symmetrically distributed at both ends of the clamping screw (5).
5. The tool for removing the wellhead flange and backing ring integration according to claim 4, characterized in that the sleeve of the hand wheel (4) is internally threaded, said internal threads matching the threads of the clamping screw (5); one end of a shaft sleeve of the hand wheel (4) is connected with an outer ear structure (9) of the chuck (1) through a bearing of the hand wheel (4).
6. The tool of claim 1, wherein the bump stop hammer (8) incorporates a spring structure.
7. The tool according to claim 6, wherein the lower part of the anti-collision limit standard hammer (8) is attached to the upper surface of the wellhead flange to be removed.
8. The tool according to claim 1, wherein the cross arm (3) slides up and down on the height screw (2) through a chute.
9. The tool for removing a wellhead flange and backing ring according to claim 1, wherein the diameter of the lower step jaw camber of the jaw structure (6) is smaller than the backing ring outer diameter.
10. The tool of claim 9, wherein the jaw structure (6) is made of a wedge-shaped ultra-thin high strength material, which comprises high carbon steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322849605.5U CN220979415U (en) | 2023-10-24 | 2023-10-24 | Integrated tool for removing wellhead flange and backing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322849605.5U CN220979415U (en) | 2023-10-24 | 2023-10-24 | Integrated tool for removing wellhead flange and backing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220979415U true CN220979415U (en) | 2024-05-17 |
Family
ID=91062062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322849605.5U Active CN220979415U (en) | 2023-10-24 | 2023-10-24 | Integrated tool for removing wellhead flange and backing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220979415U (en) |
-
2023
- 2023-10-24 CN CN202322849605.5U patent/CN220979415U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |