CN210134848U - Wellhead resetting device suitable for flange with bottom - Google Patents
Wellhead resetting device suitable for flange with bottom Download PDFInfo
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- CN210134848U CN210134848U CN201920812323.9U CN201920812323U CN210134848U CN 210134848 U CN210134848 U CN 210134848U CN 201920812323 U CN201920812323 U CN 201920812323U CN 210134848 U CN210134848 U CN 210134848U
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Abstract
The utility model discloses a well head resetting means suitable for flange has a bottom, including the staple bolt, the hydraulic cylinder, double flange nipple joint and preventer, the staple bolt comprises two half staple bolts, staple bolt both ends symmetry is provided with two hydraulic cylinders that are used for the remote control staple bolt to open or withdraw, the hydraulic cylinder pole at hydraulic cylinder both ends is connected with two half staple bolts respectively, two half staple bolts close the formation staple bolt through two hydraulic cylinder hookups, double flange nipple joint upper end and preventer fixed seal are connected, the lower extreme is used for being connected with the well head, the staple bolt fastening is on the double flange nipple joint. The utility model discloses can realize that overall process remote operation robs the dress well head, improve and rob dress well head operating efficiency, reduce the risk that the personnel of speedily carrying out rescue work are close to the well head operation.
Description
Technical Field
The utility model relates to a well head resetting means suitable for flange has at the bottom for the resetting well head operation of the out of control emergency operation of oil gas well blowout behind the cutting sleeve pipe.
Background
When the blowout of an oil and gas well is out of control and catches fire, the common conditions are that well site equipment is damaged and a well head is damaged. The general method for emergency rescue comprises the following steps: cooling and shielding the well mouth, emergency equipment and personnel, removing equipment facilities around the well mouth, and cutting the well mouth. And determining the cutting position of the wellhead according to the investigation condition before cutting the wellhead, if the wellhead bottom flange is not damaged, cutting the wellhead from the four-way joint at the upper part of the wellhead bottom flange, and rob-installing a new wellhead after taking the four-way joint and taking the lower flange. And if the wellhead bottom flange is damaged, cutting the wellhead at the lower casing of the bottom flange.
Aiming at the condition that a wellhead bottom flange is not damaged, the method for resetting the wellhead by adopting a gravity pressurization method at present comprises the following steps: the blowout preventer device is installed on the remote control resetting wellhead device, the blowout preventer device and the original wellhead bottom flange are centered and buckled through remote control operation, the blowout preventer is rotated to be aligned to the screw hole, and then emergency personnel tighten the flange connecting bolt on the wellhead. The method is suitable for installing the well mouth for the high-pressure production well blowout out-of-control emergency rescue, and the whole process is mechanized, but emergency rescue personnel need to approach the well mouth for operation in the last step, and if the fire is suddenly punctured and leaked, huge danger is brought to the emergency rescue personnel.
Disclosure of Invention
An object of the utility model is to overcome the above-mentioned problem that prior art exists, provide a well head resetting means suitable for flange has at the bottom. The utility model discloses can realize that overall process remote operation robs the dress well head, improve and rob dress well head operating efficiency, reduce the risk that the personnel of speedily carrying out rescue work are close to the well head operation.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a well head resetting means suitable for there is end flange which characterized in that: the device comprises a hoop, a hydraulic cylinder, a double-flange short section and a blowout preventer, wherein the hoop is composed of two half hoops, the two ends of the hoop are symmetrically provided with two hydraulic cylinders for remotely controlling the hoop to open or retract, hydraulic cylinder rods at the two ends of the hydraulic cylinder are respectively connected with the two half hoops, the two half hoops are connected and closed through the two hydraulic cylinders to form the hoop, the upper end of the double-flange short section is fixedly and hermetically connected with the blowout preventer, the lower end of the double-flange short section is used for being connected with a well mouth, and the hoop is fastened on the double-flange short section.
The outer ring outside of the hoop is provided with a hydraulic cylinder connecting lug plate, a pin hole is formed in the hydraulic cylinder connecting lug plate, and a hydraulic cylinder rod of the hydraulic cylinder is connected with the hoop through the pin hole and a hydraulic cylinder connecting pin.
The upper part and the lower part of the outer side of the hoop are respectively provided with a bolt connecting lug plate, bolt connecting holes are formed in the bolt connecting lug plates, and when the hydraulic cylinder fails, the two half hoops are connected and closed through the bolt connecting holes and the hoop connecting bolts to form the hoop.
The upper end face of the inner side of the hoop is designed to be an inclined plane, and the lower end face of the inner side of the hoop is designed to be a flat end face.
The hydraulic cylinders are provided with a first oil inlet and outlet, a second oil inlet and outlet and a third oil inlet and outlet side by side, the first oil inlet and outlet and the third oil inlet and outlet on the two hydraulic cylinders are communicated, and the second oil inlet and outlet on the two hydraulic cylinders are communicated.
The double-flange short section comprises a short section and flange structures at the upper end and the lower end of the short section, an inner hole is axially arranged in a through mode through the short section, the flange structures comprise sealing mechanisms arranged on flanges and flange end faces, flange connection screw holes are evenly distributed in the circumferential direction of the flanges, the upper end face of the lower flange is arranged to be an inclined face matched with the hoop inclined face, and the screw hole position of the upper end face of the lower flange is arranged to be a U-shaped plane.
The sealing mechanism comprises a gasket ring groove arranged on the end face of the flange and a sealing gasket ring arranged in the gasket ring groove.
The short section and the flange are of an integrated structure.
The double-flange short section and the blowout preventer are fixedly connected through a blowout preventer connecting bolt.
The hoop is further connected with a hoop fixing support, one end of the hoop fixing support is fixedly connected with the hoop, and the other end of the hoop fixing support is fixed on a connecting bolt of the blowout preventer.
Adopt the utility model has the advantages of:
1. the utility model designs symmetrical double hydraulic cylinders, and fixes the anchor ear and the hydraulic cylinder on the blowout preventer and the double-flange short joint through the anchor ear fixing bracket and the blowout preventer connecting bolt, the structure is simple, and the assembly is convenient; design staple bolt connecting bolt simultaneously and prevent that hydraulic pressure is inefficacy, strengthened the utility model discloses a security performance. The clamping of staple bolt adopts and surges the completion, makes the connection of preventer, double flange nipple joint and well head realize mechanization, has realized that oil gas well blowout is out of control to rob dress well head overall process remote operation.
2. The utility model provides a device of well head replacement under the intact condition of flange at the bottom of the well head to realize that overall process remote operation robs the dress well head, improve and rob dress well head operating efficiency, reduce the risk that the personnel of speedily carrying out rescue work are close to the well head operation.
3. The utility model is suitable for a reset well head operation of oil gas well blowout emergency rescue operation out of control under the intact circumstances of end flange. The basic process of emergency operation when the blowout of the oil and gas well is out of control and catches fire is as follows: cooling, shielding, removing obstacles and resetting the wellhead. The operation of resetting the well head is the important link that the oil gas well is out of control to catch fire and speedily carry out rescue work, and the utility model discloses can effectively reduce the operation risk, improve the operating efficiency.
4. The utility model discloses a staple bolt design has hydraulic cylinder to connect otic placode and bolted connection otic placode, can satisfy remote operation, and flange staple bolt safety is effective when guaranteeing hydraulic pressure inefficacy again. The upper end face and the lower end face of the hoop are respectively designed into a flat inclined plane and a flat end face, so that the matching of the original standard flange can be met, and the clamping function of the hoop can be met. The double-flange short section is matched with the double-flange short section for use, so that the whole process of installing the wellhead for out-of-control blowout of the oil and gas well can be remotely operated. The main objective is exactly to solve the blowout and rush to install the last step of well head and need speedily carry out rescue work personnel near the well head operation problem out of control, and two half formula staple bolts that surges replace artifical near well head connecting bolt, improve and speedily carry out rescue work well head operating efficiency, reduce the risk that speedily carry out rescue work personnel and be close to the well head operation.
5. The utility model discloses the nipple joint of upper and lower both ends double flange structure designs into the inclined plane with the sending up end of well head flange joint, satisfies the chucking of flange joint staple bolt. The screw hole position of the upper end surface of the lower flange is designed into a horseshoe-shaped plane, so that the function of fastening the spare bolt of the lower flange and the wellhead flange is conveniently realized. The remote hydraulic control fastening flange is matched with the two half hydraulic flange connecting hoops to replace an artificial near-wellhead connecting bolt.
6. The utility model provides an oil gas well blowout is out of control speedily carries out rescue work and can effectively guarantee end flange and sheathed tube chucking and sealed, improves and speedily carries out rescue work well head operating efficiency, reduces the number of times that the personnel of speedily carrying out rescue work are close to the well head operation.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of a cross-section structure of a double-flange short section of the present invention;
FIG. 4 is a schematic top view of the structure of FIG. 3;
fig. 5 is a schematic view of the main view structure of the hoop of the present invention;
FIG. 6 is a schematic top view of the structure of FIG. 5;
labeled as: 1. staple bolt, 2, the hydraulic cylinder, 3, staple bolt, 4, the hydraulic cylinder connecting pin, 5, two flange nipple joints, 6, staple bolt fixed bolster, 7, preventer connecting bolt, 8, preventer, 9, the seal backing ring, 10, the well head, 11, the inclined plane, 12, the plain end face, 13, first business turn over hydraulic fluid port, 14, second business turn over hydraulic fluid port, 15, third business turn over oil outlet, 16, the flange joint screw, 17, the shape of a hoof plane, 18, the backing ring groove, 19, the hydraulic cylinder connection otic placode, 20, bolted connection otic placode.
Detailed Description
Example 1
The utility model provides a well head resetting means suitable for flange has a end, including staple bolt 1, hydraulic cylinder 2, double flange nipple joint 5 and preventer 8, staple bolt 1 comprises two half staple bolts, staple bolt 1 both ends symmetry is provided with two hydraulic cylinders 2 that are used for 1 opening or withdraw of remote control staple bolt, the hydraulic cylinder pole at 2 both ends of hydraulic cylinder is connected with two half staple bolts respectively, two half staple bolts close through two 2 hookups of hydraulic cylinder to form staple bolt 1, double flange nipple joint 5 upper end and 8 fixed sealing of preventer are connected, the lower extreme is used for being connected with well head 10, staple bolt 1 fastening is on double flange 5.
The outer ring of the outer side of the hoop 1 is provided with a hydraulic cylinder connecting lug plate, a pin hole is formed in the hydraulic cylinder connecting lug plate, and a hydraulic cylinder rod of the hydraulic cylinder 2 is connected with the hoop 1 through the pin hole and a hydraulic cylinder connecting pin 4.
The upper part and the lower part of the outer side of the hoop 1 are respectively provided with a bolt connecting lug plate, bolt connecting holes are formed in the bolt connecting lug plates, and when the hydraulic cylinder fails, the two half hoops are connected and closed through the bolt connecting holes and the hoop connecting bolts 3 to form the hoop 1.
The upper end face of the inner side of the hoop 1 is designed to be an inclined plane 11, and the lower end face of the inner side is designed to be a flat end face 12.
The hydraulic cylinders 2 are provided with a first oil inlet and outlet 13, a second oil inlet and outlet 14 and a third oil inlet and outlet 15 side by side, the first oil inlet and outlet 13 and the third oil inlet and outlet 15 on the two hydraulic cylinders 2 are communicated, and the second oil inlet and outlet 14 on the two hydraulic cylinders 2 are communicated.
The double-flange short section 5 comprises a short section and flange structures at the upper end and the lower end of the short section, an inner hole is axially arranged in a through mode, the flange structures comprise sealing mechanisms arranged on flanges and flange end faces, flange connection screw holes 16 are evenly distributed in the circumferential direction of the flanges, the upper end face of a lower flange is arranged to be an inclined plane 11 matched with a hoop inclined plane, and the screw hole position of the upper end face of the lower flange is arranged to be a U-shaped plane 17.
The sealing mechanism comprises a backing ring groove 18 arranged on the end face of the flange and a sealing backing ring 9 arranged in the backing ring groove 18.
The short section and the flange are of an integrated structure.
The double-flange short section 5 and the blowout preventer 8 are fixedly connected through a blowout preventer connecting bolt 7.
The hoop 1 is further connected with a hoop fixing support 6, one end of the hoop fixing support 6 is fixedly connected with the hoop 1, and the other end of the hoop fixing support 6 is fixed on a blowout preventer connecting bolt 7.
Adopt the utility model discloses a reset method, including following step:
a. when a wellhead is installed, hydraulic cylinder rods at two ends of a remote control hydraulic cylinder 2 extend out, an anchor ear 1 is opened, a blowout preventer 8 and a double-flange short section 5 are conveyed to the position right above the wellhead by equipment, downward pressurization is carried out to enable a lower flange of the double-flange short section 5 to be superposed with a flange of the wellhead 10, and the blowout preventer 8 is rotated to enable a connecting screw hole to be aligned with a flange screw hole of the wellhead;
b. and (3) retracting hydraulic cylinder rods at two ends of the hydraulic cylinder 2, retracting the hoop 1, and clamping the lower flange of the double-flange short joint 5 with the wellhead flange.
And in the step b, the sealing gasket ring 9 tightly pressing the lower end face of the double-flange short section 5 realizes flange sealing and fastening, and the hoop connecting bolt 3 is tightened for preventing hydraulic failure of the hydraulic cylinder.
When the hydraulic cylinder 2 remotely controls the second oil inlet/outlet 14 to feed hydraulic oil and the first oil inlet/outlet 13 and the third oil inlet/outlet 15 to discharge oil, the hoop 1 is opened; when the first oil inlet and outlet 13 and the third oil inlet and outlet 15 are remotely controlled to feed hydraulic oil and the second oil inlet and outlet 14 is controlled to discharge oil, the hoop 1 is retracted and held tightly.
Example 2
The present embodiment will be further described with reference to the accompanying drawings.
The utility model is suitable for a well head resetting means who has end flange connects it in new well head device lower part, with the device with their transfer to the well head on with the cooperation of well head flange, with hydraulic control two halves staple bolt chucking well head flanges, when needing mechanical fastening, with the tight 3 solid staple bolts of staple bolt connecting bolt, connect both sides flange bolt, accomplish the well head and reset and connect the fastening.
A wellhead relocating device structure suitable for use with a bottom flange is shown in figures 1 and 2: the hoop 1 consists of two halves and is connected with the hydraulic cylinder 2 through a hydraulic cylinder connecting pin 4. The hoop 1 and the hydraulic cylinder 2 are fixed on the blowout preventer 8 and the double-flange short section 5 through a hoop fixing support 6 and a blowout preventer connecting bolt 7. The double-flange short section 5 and the blowout preventer 8 are fixedly connected through a blowout preventer connecting bolt 7, and the sealing backing ring 9 is fixed in a backing ring groove 18 of the double-flange short section in advance. When the well mouth is installed, the hydraulic cylinder rods at two ends of the hydraulic cylinder 2 extend out, and the hoop 1 is opened. And (4) conveying the blowout preventer 8 and the double-flange short section to a position right above a wellhead 10 through equipment. And (3) pressurizing downwards to enable the lower flange of the double-flange short joint 5 to coincide with the wellhead flange. The blowout preventer 8 is rotated so that its bolt holes are aligned with the wellhead flange bolt holes. And (3) retracting hydraulic cylinder rods at two ends of the hydraulic cylinder 2, retracting the hoop 1, clamping a lower flange of the double-flange short joint 5 with a flange of a well mouth 10, and compressing the sealing gasket ring 9 to realize flange sealing and fastening. And tightening the hoop connecting bolt 3 to prevent hydraulic failure of the hydraulic cylinder.
The utility model discloses the double-flange nipple joint of well adoption is as shown in fig. 3 and fig. 4, and both ends are the double-flange structure about the nipple joint, and the end face design has the backing ring groove 18 under the lower flange for with the connection seal of well head flange. And flange connecting screw holes 16 are uniformly distributed in the circumferential direction of the lower flange and are used for being fixedly connected with a wellhead flange in a standby mode. The upper end face of the lower flange is designed to be an inclined plane 11 and is used for meeting the clamping function of the flange connection hoop. The screw hole position of the upper end surface of the lower flange is designed into a horseshoe-shaped plane 17, so that the function of fastening the spare bolt of the lower flange and the wellhead flange is conveniently realized. The upper end surface of the upper flange is designed with a gasket ring groove 18 for sealing connection with the blowout preventer 8. And flange connecting screw holes 16 are uniformly distributed in the circumferential direction of the upper flange and are used for connecting and fastening the upper flange with the blowout preventer 8.
The utility model discloses the staple bolt of well adoption is shown in fig. 5 and 6, mainly includes staple bolt 1, staple bolt connecting bolt 3, hydraulic cylinder 2, hydraulic cylinder connecting pin 4. A hydraulic cylinder connecting lug plate 19 is designed on the outer ring of the outer side of the hoop 1, and bolt connecting lug plates 20 are designed on the upper and lower parts of the outer side; the upper end surface of the inner side is designed into an inclined surface 11, and the lower end surface of the inner side is designed into a flat end surface 12; the hydraulic cylinder 2 is designed with a first oil inlet and outlet 13, a second oil inlet and outlet 14 and a third oil inlet and outlet 15.
The hoop 1 consists of two halves and is connected with the hydraulic cylinder 2 through a hydraulic cylinder connecting pin 4; when hydraulic pressure fails, the connecting bolts can be connected through the hoop connecting bolts 3. The first oil inlet and outlet 13 and the third oil inlet and outlet 15 on the two hydraulic cylinders 3 are communicated, and the second oil inlet and outlet 14 is communicated; when hydraulic oil is fed from the second oil inlet and outlet 14 and the first oil inlet and outlet 13 and the third oil inlet and outlet 15 discharge oil, the two half hoops are opened and can be sleeved into the flange; when hydraulic oil is fed into the first oil inlet/outlet 13 and the third oil inlet/outlet 15 and oil is discharged from the second oil inlet/outlet 14, the two half hoops are tightly held.
The lower end face of the inner side of the hoop 1 is designed into a flat end face 12 which can meet the matching of the lower end face of a standard wellhead flange.
The inner upper end face of the hoop 1 is designed into an inclined plane 11 to meet the clamping of the flange of the blowout preventer.
Claims (8)
1. The utility model provides a well head resetting means suitable for there is end flange which characterized in that: including staple bolt (1), hydraulic cylinder (2), two flange nipple joints (5) and preventer (8), staple bolt (1) comprises two halves staple bolts, staple bolt (1) both ends symmetry is provided with two hydraulic cylinders (2) that are used for remote control staple bolt (1) to open or withdraw, the hydraulic cylinder pole at hydraulic cylinder (2) both ends is connected with two halves staple bolts respectively, two halves staple bolts close through two hydraulic cylinder (2) hookups and form staple bolt (1), two flange nipple joints (5) upper end and preventer (8) fixed seal are connected, the lower extreme is used for being connected with well head (10), staple bolt (1) fastening is on two flange nipple joints (5).
2. A wellhead relocating device adapted for use with a bottom flange as claimed in claim 1, wherein: the outer ring of the outer side of the hoop (1) is provided with a hydraulic cylinder connecting lug plate (19), the hydraulic cylinder connecting lug plate (19) is provided with a pin hole, and a hydraulic cylinder rod of the hydraulic cylinder (2) is connected with the hoop (1) through the pin hole and the hydraulic cylinder connecting pin (4).
3. A wellhead relocating device adapted for use with a bottom flange as claimed in claim 2, wherein: the anchor ear (1) is characterized in that bolt connecting ear plates (20) are respectively arranged on the upper side and the lower side of the outer side of the anchor ear (1), bolt connecting holes are formed in the bolt connecting ear plates (20), and when the hydraulic cylinder (2) fails, the two half anchor ears are connected and closed through the bolt connecting holes and anchor ear connecting bolts (3) to form the anchor ear (1).
4. A wellhead relocating device adapted for use with a bottom flange as claimed in claim 3, wherein: the upper end face of the inner side of the hoop (1) is designed to be an inclined plane (11), and the lower end face of the inner side is designed to be a flat end face (12).
5. A wellhead relocation device according to claim 4 and adapted for use with a base flange, wherein: the hydraulic cylinders (2) are provided with a first oil inlet and outlet (13), a second oil inlet and outlet (14) and a third oil inlet and outlet (15) side by side, the first oil inlet and outlet (13) and the third oil inlet and outlet (15) on the two hydraulic cylinders (2) are communicated, and the second oil inlet and outlet (14) on the two hydraulic cylinders (2) are communicated.
6. A wellhead relocation device according to claim 5, adapted for use with a base flange, wherein: the double-flange short section (5) comprises flange structures at the upper end and the lower end of the short section and an inner hole, the short section is axially communicated with the inner hole, the flange structures comprise sealing mechanisms arranged on flanges and flange end faces, flange connection screw holes (16) are uniformly distributed in the circumferential direction of the flanges, the upper end face of the lower flange is arranged to be an inclined plane (11) matched with the hoop inclined plane, and the screw hole position of the upper end face of the lower flange is arranged to be a U-shaped plane (17).
7. A wellhead relocating device suitable for use with a bottomed flange as claimed in claim 6, wherein: the sealing mechanism comprises a gasket ring groove (18) arranged on the end face of the flange and a sealing gasket ring (9) arranged in the gasket ring groove (18).
8. A wellhead relocation device adapted for use with a bottom flange according to claim 7, wherein: the hoop (1) is further connected with a hoop fixing support (6), one end of the hoop fixing support (6) is fixedly connected with the hoop (1), and the other end of the hoop fixing support (6) is fixed on a blowout preventer connecting bolt (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920812323.9U CN210134848U (en) | 2019-05-31 | 2019-05-31 | Wellhead resetting device suitable for flange with bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920812323.9U CN210134848U (en) | 2019-05-31 | 2019-05-31 | Wellhead resetting device suitable for flange with bottom |
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| Publication Number | Publication Date |
|---|---|
| CN210134848U true CN210134848U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920812323.9U Active CN210134848U (en) | 2019-05-31 | 2019-05-31 | Wellhead resetting device suitable for flange with bottom |
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| CN (1) | CN210134848U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094178A (en) * | 2019-05-31 | 2019-08-06 | 中国石油集团川庆钻探工程有限公司 | Suitable for having the well head reset apparatus and remapping method of bottom flange |
| CN115538959A (en) * | 2022-12-01 | 2022-12-30 | 西安海联石化科技有限公司 | Shaft liquid level balance control method based on liquid level monitoring |
-
2019
- 2019-05-31 CN CN201920812323.9U patent/CN210134848U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094178A (en) * | 2019-05-31 | 2019-08-06 | 中国石油集团川庆钻探工程有限公司 | Suitable for having the well head reset apparatus and remapping method of bottom flange |
| CN110094178B (en) * | 2019-05-31 | 2024-06-07 | 中国石油集团川庆钻探工程有限公司 | Wellhead resetting device and resetting method suitable for bottomed flange |
| CN115538959A (en) * | 2022-12-01 | 2022-12-30 | 西安海联石化科技有限公司 | Shaft liquid level balance control method based on liquid level monitoring |
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