CN210948567U - Wellhead anti-overflow suspension device for well repair - Google Patents
Wellhead anti-overflow suspension device for well repair Download PDFInfo
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- CN210948567U CN210948567U CN201921762618.6U CN201921762618U CN210948567U CN 210948567 U CN210948567 U CN 210948567U CN 201921762618 U CN201921762618 U CN 201921762618U CN 210948567 U CN210948567 U CN 210948567U
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Abstract
The utility model relates to a well head overflow-proof suspension device for well repair, a conical hanger is seated on the conical surface of the upper part of a well head four-way inner cavity, the lower port of the conical hanger is screwed with an oil pipe joint, a sucker rod suspension device is inserted in the oil pipe joint, the periphery of the middle part of the cylinder body of the sucker rod suspension device is provided with a cylinder body convex ring, and the cylinder body convex ring is supported on the upper port of the oil pipe joint; a lower sealing plate is pressed on a step at the middle section of the inner cavity of the cylinder body of the suspender, a ball valve is arranged above the lower sealing plate, an upper sealing plate is arranged above the ball valve, an upper connector of the suspender is pressed above the upper sealing plate, the upper connector of the suspender is screwed on the upper port of the cylinder body of the suspender, and the upper port of the upper connector of the suspender is screwed with a short section of a sucker rod; the outer end of the valve rod of the ball valve is positioned in the window of the hanger cylinder; the lower port of the hanger cylinder is screwed with a hanger lower joint, and the lower part of the hanger lower joint is screwed with the top of the sucker rod. The device can solve the problem that the well can not be closed in time when the oil overflows from the well mouth in the process of pumping the oil rod.
Description
Technical Field
The utility model relates to a workover tool especially relates to a well head anti-overflow suspension device for workover, belongs to workover tool technical field.
Background
The horsehead of the beam-pumping unit drives the plunger of the underground oil pump to move up and down through the rope braid, the polish rod and the oil pumping rod, so that crude oil in a well is continuously pumped out of a shaft. The polished rod is connected with the sucker rod through a polished rod, the polished rod is positioned at the uppermost part of the sucker rod, and the polished rod is matched with a packing in the blowout prevention box to seal a well mouth. The sucker rod is inserted into the oil pipe, the oil pipe is arranged in the sleeve, a wellhead four-way joint which is arranged above the ground is installed at an upper port of the sleeve, an oil pipe joint is connected to the upper end of the oil pipe column, the oil pipe joint is screwed at a lower port of the conical hanger, the conical hanger is supported on the inner wall of the upper portion of the wellhead four-way joint in a sealing mode, sleeve gates which are communicated with the sleeve annulus are connected to the left side and the right side of the wellhead four-way joint respectively, a Christmas tree tee joint is installed above the wellhead four-way joint, the oil pipe gate is connected to one.
The oil well pump is damaged to cause pump out of work, the sucker rod breaks off, the sucker rod and the oil pipe are eccentrically worn to cause oil pipe abrasion or sucker rod abrasion, sand production in the well, scaling to cause pipe column sand blocking, scale blocking and the like, and the oil well is easy to stop production. The oil-water well with the problems and faults needs to be subjected to pump detection operation, so that the oil-water well can be recovered to normal production.
The main work content of the oil well pump inspection is to trip the sucker rod and the oil pipe. In addition, according to the development needs of oil fields, the work system needs to be changed for changing pumps or operations such as deepening or lifting the pump hanging depth, adjusting and repairing layers, plugging water and the like, and the sucker rod and the oil pipe in the well also need to be lifted out. Because the sucker rod has the pumping effect to the interior liquid of oil pipe in playing the sucker rod in-process, the phenomenon of induced spraying in the oil pipe easily takes place, plays the sucker rod simultaneously and causes the interior liquid column pressure of oil pipe to reduce, and the release of the dissolved gas in the oil pipe causes the liquid eruption easily, causes ground pollution, and serious can destroy oil well shaft structure, phagocytose well head equipment, arouse the fire incident, cause the casualties, the polluted environment, extravagant and destroy oil and gas resource, harm is very big.
In the prior art, in the process of starting the sucker rod, if oil injection at a well head or a well injection precursor is found, a polished rod is firstly put down, and then a polished rod blowout prevention box and a well head flow are installed, so that the labor intensity is high, the operation time is long, and the oil pipe internal injection cannot be rapidly and effectively controlled in a short time. Even a blowout accident occurs due to time delay, resulting in more serious property personnel loss.
If the blowout is controlled by backwashing kill, the construction pressure of the backwashing well is high, the required well-flushing liquid amount is large, oil layer pollution can be caused to a low-permeability water-sensitive stratum, and the yield of crude oil is influenced. The best well killing method is to supplement a certain amount of well killing fluid into the oil pipe to control well blowout; however, due to the special one-way structure of the underground production pipe column, the underground anchoring oil drain device can be unsealed only by lifting the pipe column by about the height of one oil pipe, a positive circulation channel is opened, a certain amount of well killing fluid is supplemented into the oil pipe, and the well mouth is stabilized. In the existing operation method, after a polished rod and a blowout prevention box are installed, an oil string cannot be lifted, so that an oil drainer channel cannot be opened to realize positive circulation well killing.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem that exists among the prior art, provide a well head anti-overflow suspension device for workover, can solve borehole operation and play the sucker rod in-process, midway shut down shut in well time overlength and can not in time shut in the time of the well head oil spill problem.
In order to solve the technical problem, the wellhead anti-overflow suspension device for workover of the utility model comprises a wellhead cross, a conical hanger is seated on the conical surface of the upper part of the inner cavity of the wellhead cross, the lower port of the conical hanger is screwed with an oil pipe joint, a sucker rod suspension device is inserted in the oil pipe joint and comprises a suspension device barrel, a barrel convex ring is arranged on the periphery of the middle part of the suspension device barrel, and the barrel convex ring is supported on the upper port of the oil pipe joint; a lower sealing plate is pressed on a step at the middle section of the inner cavity of the cylinder body of the suspender, a ball valve is arranged above the lower sealing plate, an upper sealing plate is arranged above the ball valve, an upper connector of the suspender is pressed above the upper sealing plate, the upper connector of the suspender is screwed on the upper port of the cylinder body of the suspender, and the upper port of the upper connector of the suspender is screwed with a short section of a sucker rod; the outer end of the valve rod of the ball valve is positioned in the window of the hanger cylinder; the lower port of the hanger cylinder body is screwed with a hanger lower joint, and the lower part of the hanger lower joint is screwed with the top of the sucker rod.
Compared with the prior art, the utility model discloses following beneficial effect has been obtained: the periphery of the upper sealing plate and the lower sealing plate is sealed with the inner wall of the cylinder body of the suspender through the sealing ring, and the upper sealing plate, the ball valve and the lower sealing plate are tightly pressed on the step of the small-bore section through the upper joint of the suspender. The sucker rod short joint is screwed on the upper end of the sucker rod hanger, the sucker rod is screwed below the sucker rod hanger, the ball valve is initially in a closed state, and if no blowout warning sign exists, the sucker rod can be directly lifted out. If the blowout precursor occurs or the wellhead overflows, the sucker rod hanger is lowered down to enable the convex ring of the cylinder body to be rested on the upper port of the oil pipe joint, the blowout can be effectively prevented because the ball valve is in a closed state, and a blowout prevention box is not required to be installed on the wellhead; the adverse effect caused by untimely well shut-in is effectively avoided, the environment is protected, and the production cost is reduced.
As the utility model discloses an improvement, the last port of toper hanger has connect oil pipe to promote the nipple joint soon, the middle section of hanger lower clutch is equipped with big-end-up's lower clutch conical body, and the middle section outer wall of lower clutch conical body is equipped with the radial hole of lower clutch and has a perfect understanding mutually with hanger lower clutch centre bore, the below of lower clutch conical body is equipped with lower clutch lower thread section, lower clutch lower thread section connects with the top of sucker rod mutually soon. When killing is needed, the ball valve is opened, then the oil pipe lifting short section is installed, then the oil pipe lifting short section is lifted, the conical hanger and the oil pipe column below the conical hanger are enabled to go upwards for a certain distance, a shear pin of the anchoring oil drain device at the lower part of the oil pipe column is cut off, a normal washing channel of the anchoring oil drain device is unsealed, then a certain amount of killing fluid is supplemented into the oil pipe from the well mouth, the killing fluid penetrates through the ball valve and enters a central hole of a lower connector of the hanger, and due to the fact that the outer diameter of the middle section of the conical body of the lower connector is far smaller than the inner diameter of the oil pipe, the killing fluid can smoothly flow out from the radial hole of the. Compared with backwashing well killing, the positive circulation well killing needs less well killing liquid, can solve the problem of oil layer pollution caused by backwashing of the low-permeability water-sensitive stratum, can improve the yield of crude oil, and has good application value.
As a further improvement, the axis of the ball valve deviates from the axis of the suspension device cylinder, and the flow passage of the ball valve is communicated with the center hole of the suspension device cylinder. Because the middle part of the ball valve is provided with the valve rod which extends outwards, the ball valve is offset, the inner cavity of the cylinder body of the suspender is convenient for accommodating the whole ball valve, the installation of the ball valve in the cylinder body of the suspender is also convenient, the upper port and the lower port of the flow passage of the ball valve are completely exposed in the central hole of the cylinder body of the suspender, and the flow passage of the ball valve is prevented from being partially blocked due to the offset of the.
As a further improvement of the utility model, the tube heads at the two ends of the ball valve are light tubes, the upper tube head of the ball valve is inserted in the through hole of the upper sealing plate, and the periphery of the upper tube head is embedded with an upper sealing ring of the ball valve; the lower pipe head of the ball valve is inserted in the through hole of the lower sealing plate, and the periphery of the lower pipe head of the ball valve is embedded with a lower sealing ring of the ball valve. Two ends of the traditional ball valve are connected through external threads or internal threads, so that the traditional ball valve is inconvenient to install in an inner cavity of a cylinder of the suspender; the utility model discloses the both ends of ball valve adopt the fluorescent tube to peg graft in the closing plate, and the fluorescent tube periphery is realized sealing by the sealing washer, is convenient for install the location fast and seal well.
As a further improvement, the outer end of the valve rod of the ball valve is connected with a detachable square tenon. When the ball valve is installed, the square tenon at the outer end of the valve rod is detached, so that the overall dimension of the ball valve is smaller, the ball valve is convenient to install in the suspender cylinder, the square tenon is installed at the outer end of the valve rod after the ball valve is installed in place and fixed in the inner cavity of the suspender cylinder, a wrench is convenient to rotate the valve rod from the outside, and the opening and closing of the ball valve are realized.
As a further improvement, the top of hanger lower clutch is equipped with the lower clutch polished rod section, the periphery of lower clutch polished rod section is inlayed and is equipped with the inner wall realization of hanger lower clutch small seal circle with the hanger barrel and seal, the below of lower clutch polished rod section is equipped with the lower clutch upper thread section, the lower clutch upper thread section connects in the lower port of hanger barrel soon, the top of lower clutch conical body is equipped with reducing section and cover and is equipped with the big sealing washer of lower clutch. The upper thread section of the lower joint realizes the fixation between the lower joint of the suspender and the cylinder body of the suspender, the small sealing ring of the lower joint of the suspender realizes the sealing between the lower joint of the suspender and the inner wall of the cylinder body of the suspender, and the large sealing ring of the lower joint realizes the sealing between the lower joint of the suspender and the inner wall of the oil pipe joint, thereby preventing blowout or positive circulation liquid leakage.
As the further improvement of the utility model, the external diameter of the big sealing washer of lower clutch is 63mm, the external diameter that suspends ware barrel and suspends ware in midair top connection is 61mm, the external diameter of barrel bulge loop is 63 mm. The inner diameter of the oil pipe joint is 62mm, and the part below the convex ring of the cylinder body is smaller than the inner diameter of the oil pipe joint by 62mm, so that the oil pipe joint is convenient to insert; the sucker rod hanger can be suspended on the top of the oil pipe joint by the barrel convex ring with the thickness of 63mm through being seated on the upper port of the oil pipe joint, so that the sucker rod can be conveniently lifted out of the oil pipe column. The 63mm lower joint large sealing ring can ensure the sealing between the periphery of the lower joint of the hanger and the inner wall of the oil pipe joint, and is convenient for the lower joint of the hanger to be inserted into the oil pipe joint.
Drawings
Fig. 1 is a schematic structural view of the wellhead anti-overflow suspension device for well repair.
Fig. 2 is a partially enlarged view of fig. 1.
FIG. 3 is an enlarged view of the sucker rod hanger of FIG. 2.
In the figure: 1. a wellhead cross joint; 2. a conical hanger; 2a, connecting an oil pipe; 2b, lifting the short section by the oil pipe; 3. a sucker rod hanger; 3a, connecting the hanger with an upper joint; 3b, a suspender cylinder; 3b1, small aperture section; 3b2. barrel convex ring; 3b3. window; 3c, an upper sealing plate; 3d, a ball valve; 3d1. ball valve upper pipe head; 3d2. valve stem; 3d3. square tenon; 3d4. ball valve lower pipe head; 3e, a lower sealing plate; 3f, a hanger lower joint; 3f1. lower joint polished rod segment; 3f2. lower joint upper thread section; 3f3. lower joint large sealing ring; 3f4. lower joint cone; 3f5. lower joint radial hole; 3f6. lower joint lower thread section; 4. a short joint of the sucker rod; 5. a sucker rod; 6. a sleeve gate.
Detailed Description
As shown in fig. 1 to 3, the utility model discloses a well head anti-overflow hanging device for workover includes well head cross 1, the left and right sides of well head cross 1 is connected with the sleeve pipe gate 6 that is linked together with the sleeve pipe annular space respectively, it has toper hanger 2 to sit on the conical surface on 1 inner chamber upper portion of well head cross, the lower port of toper hanger 2 has connect oil pipe connector 2a soon, the oil pipe post is connected in oil pipe connector 2a below, it has sucker rod hanger 3 to peg graft in oil pipe connector 2a, sucker rod hanger 3 includes hanger barrel 3b, hanger barrel 3 b's middle part periphery is equipped with barrel flange 3b2, barrel flange 3b2 supports the last port at oil pipe connector 2a.
A small-bore section 3b1 is arranged in the middle section of the inner cavity of the suspender cylinder 3b, a lower sealing plate 3e is pressed on a step of the small-bore section 3b1, a ball valve 3d is arranged above the lower sealing plate 3e, an upper sealing plate 3c is arranged above the ball valve 3d, an upper suspender joint 3a is pressed above the upper sealing plate 3c, the upper suspender joint 3a is screwed at the upper port of the suspender cylinder 3b, and the upper port of the upper suspender joint 3a is screwed with a sucker rod nipple 4; the outer end of the valve rod of the ball valve 3d is positioned in the window 3b3 of the hanger cylinder 3 b; the lower port of the hanger cylinder 3b is screwed with a hanger lower joint 3f, and the lower part of the hanger lower joint 3f is screwed with the top of the sucker rod 5.
The outer peripheries of the upper seal plate 3c and the lower seal plate 3e are sealed with the inner wall of the hanger cylinder 3b by a seal ring, and the upper seal plate 3c, the ball valve 3d, and the lower seal plate 3e are pressed against the step of the small-bore section 3b1 by the hanger upper joint 3a. The sucker rod short joint 4 connects in the upper end of sucker rod hanger 3 soon, and sucker rod 5 connects in the below of sucker rod hanger 3 soon, and ball valve 3d is initial in the off-state, if there is not the blowout precursor, can directly propose sucker rod 5. If a blowout precursor occurs or well mouth overflow occurs, the sucker rod suspender 3 is lowered down, the barrel convex ring 3b2 is rested at the upper port of the oil pipe joint 2a, the ball valve 3d is in a closed state, blowout can be effectively prevented, and a blowout prevention box is not required to be installed at the well mouth; the adverse effect caused by untimely well shut-in is effectively avoided, the environment is protected, and the production cost is reduced.
An oil pipe lifting short section 2b is screwed at the upper end opening of the conical hanger 2, a lower-joint conical body 3f4 with a large upper part and a small lower part is arranged at the middle section of a lower-joint 3f of the hanger, a lower-joint radial hole 3f5 is arranged on the outer wall of the middle section of the lower-joint conical body 3f4 and communicated with a lower-joint central hole of the hanger, a lower-joint lower-thread section 3f6 is arranged below the lower-joint conical body 3f4, and a lower-joint lower-thread section 3f6 is screwed with the top of the sucker rod 5.
When killing is needed, firstly, a valve rod is rotated by a wrench at a window 3b3 of a hanger cylinder body 3b to open a ball valve 3d, then an oil pipe lifting short section 2b is installed, then the oil pipe lifting short section 2b is lifted, the conical hanger 2 and an oil pipe column below the conical hanger are enabled to move upwards for a certain distance, a shear pin of an anchoring oil drain at the lower part of the oil pipe column is cut off, a normal washing channel of the anchoring oil drain is unsealed, then a certain amount of killing fluid is supplemented into the oil pipe from a well head, the killing fluid passes through the ball valve 3d and enters a central hole of a lower connector of the hanger, and as the outer diameter of the middle section of a conical body 3f4 of the lower connector is far smaller than the inner diameter of the oil pipe, the killing fluid can smoothly flow out from the radial hole 3f5. Compared with backwashing well killing, the positive circulation well killing needs less well killing liquid, can solve the problem of oil layer pollution caused by backwashing of the low-permeability water-sensitive stratum, can improve the yield of crude oil, and has good application value.
The axis of the ball valve 3d deviates from the axis of the suspender cylinder 3b, and the flow passage of the ball valve 3d is communicated with the central hole of the suspender cylinder. Because the middle part of the ball valve 3d is provided with the valve rod which extends outwards, the ball valve 3d is offset, the inner cavity of the cylinder body 3b of the suspender is convenient for accommodating the whole ball valve 3d, the installation of the ball valve 3d in the cylinder body 3b of the suspender is also convenient, the upper port and the lower port of the flow passage of the ball valve are completely exposed in the central hole of the cylinder body of the suspender, and the flow passage of the ball valve is prevented from being partially blocked due to the offset of the.
The pipe heads at two ends of the ball valve 3d are light pipes, the upper pipe head 3d1 of the ball valve is inserted in the through hole of the upper sealing plate 3c, and the periphery of the upper pipe head is embedded with an upper sealing ring of the ball valve; the lower pipe head 3d4 of the ball valve is inserted in the through hole of the lower sealing plate 3e, and the periphery of the lower pipe head is embedded with a lower sealing ring of the ball valve. Two ends of the traditional ball valve are connected through external threads or internal threads, so that the traditional ball valve is inconvenient to install in the inner cavity of the hanger cylinder 3 b; the utility model discloses the both ends of ball valve adopt the fluorescent tube to peg graft in the closing plate, and the fluorescent tube periphery is realized sealing by the sealing washer, is convenient for install the location fast and seal well.
The outer end of the valve rod of the ball valve 3d is connected with a detachable square tenon 3d3. When the ball valve 3d is installed, the square tenon 3d3 at the outer end of the valve rod is removed, so that the overall dimension of the ball valve 3d is smaller, the ball valve 3d is convenient to install in the suspender cylinder 3b, after the ball valve 3d is installed in place and fixed in the inner cavity of the suspender cylinder 3b, the square tenon 3d3 is installed at the outer end of the valve rod, the valve rod is convenient to rotate by adopting a wrench from the outside, and the opening and closing of the ball valve 3d are realized.
The top of the suspender lower joint 3f is provided with a lower joint polished rod section 3f1, the periphery of the lower joint polished rod section 3f1 is embedded with a suspender lower joint small sealing ring to realize sealing with the inner wall of the suspender cylinder 3b, a lower joint upper thread section 3f2 is arranged below the lower joint polished rod section 3f1, the lower joint upper thread section 3f2 is screwed in the lower port of the suspender cylinder 3b, and a reducing section is arranged above the lower joint conical body 3f4 and sleeved with a lower joint large sealing ring 3f3. The upper thread section 3f2 of the lower joint realizes the fixation between the lower joint 3f of the suspender and the cylinder body 3b of the suspender, the small sealing ring of the lower joint of the suspender realizes the sealing between the lower joint 3f of the suspender and the inner wall of the cylinder body 3b of the suspender, and the large sealing ring 3f3 of the lower joint realizes the sealing between the lower joint 3f of the suspender and the inner wall of the oil pipe joint 2a, so that the blowout or positive circulation liquid leakage can be prevented.
The outer diameter of the lower joint large seal ring 3f3 was 63mm, the outer diameters of the hanger cylinder 3b and the hanger upper joint 3a were 61mm, and the outer diameter of the cylinder convex ring 3b2 was 63 mm. The inner diameter of the oil pipe joint 2a is 62mm, and the part below the cylinder convex ring 3b2 is smaller than the inner diameter of the oil pipe joint 2a by 62mm, so that the insertion is convenient; the 63mm barrel flange 3b2 can be seated at the upper port of the tubing connector 2a to suspend the sucker rod hanger 3 at the top of the tubing connector 2a to facilitate the lifting of the sucker rod 5 out of the tubing string. The 63mm lower joint large seal ring 3f3 can ensure the seal between the outer periphery of the hanger lower joint 3f and the inner wall of the oil pipe joint 2a, and facilitate the insertion of the hanger lower joint 3f into the oil pipe joint 2a.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.
Claims (7)
1. The utility model provides a well head anti-overflow suspension device for workover, includes the well head cross, has set the toper hanger on the conical surface on well head cross inner chamber upper portion, the lower port of toper hanger has connect oil pipe connector, its characterized in that soon: a sucker rod hanger is inserted into the oil pipe joint and comprises a hanger cylinder, a cylinder convex ring is arranged on the periphery of the middle part of the hanger cylinder, and the cylinder convex ring is supported at the upper port of the oil pipe joint; a lower sealing plate is pressed on a step at the middle section of the inner cavity of the cylinder body of the suspender, a ball valve is arranged above the lower sealing plate, an upper sealing plate is arranged above the ball valve, an upper connector of the suspender is pressed above the upper sealing plate, the upper connector of the suspender is screwed on the upper port of the cylinder body of the suspender, and the upper port of the upper connector of the suspender is screwed with a short section of a sucker rod; the outer end of the valve rod of the ball valve is positioned in the window of the hanger cylinder; the lower port of the hanger cylinder body is screwed with a hanger lower joint, and the lower part of the hanger lower joint is screwed with the top of the sucker rod.
2. The wellhead spill-proof suspension device for well workover according to claim 1, characterized in that: the upper port of toper hanger has connect oil pipe to promote the nipple joint soon, the middle section of hanger lower clutch is equipped with big end down's lower clutch conical body, and the middle section outer wall of lower clutch conical body is equipped with the radial hole of lower clutch and link up mutually with hanger lower clutch centre bore, the below of lower clutch conical body is equipped with lower clutch lower thread section, lower clutch lower thread section connects with the top of sucker rod mutually soon.
3. The wellhead spill-proof suspension device for well workover according to claim 1, characterized in that: the axis of the ball valve deviates from the axis of the suspender cylinder, and a flow passage of the ball valve is communicated with the central hole of the suspender cylinder.
4. The wellhead spill-proof suspension device for well workover according to claim 1, characterized in that: the two end pipe heads of the ball valve are light pipes, the upper pipe head of the ball valve is inserted into the through hole of the upper sealing plate, and the periphery of the upper pipe head of the ball valve is embedded with an upper sealing ring of the ball valve; the lower pipe head of the ball valve is inserted in the through hole of the lower sealing plate, and the periphery of the lower pipe head of the ball valve is embedded with a lower sealing ring of the ball valve.
5. The wellhead spill-proof suspension device for well workover according to claim 1, characterized in that: the outer end of the valve rod of the ball valve is connected with a detachable square tenon.
6. The wellhead spill-proof suspension device for well workover according to claim 2, characterized in that: the top of suspension device lower clutch is equipped with lower clutch polished rod section, the periphery of lower clutch polished rod section is inlayed and is equipped with the little sealing washer of suspension device lower clutch and realizes sealing with the inner wall of suspension device barrel, the below of lower clutch polished rod section is equipped with screw thread section on the lower clutch, screw thread section connects soon in the lower port of suspension device barrel on the lower clutch, the top of lower clutch conical body is equipped with reducing section and cover and is equipped with the big sealing washer of lower clutch.
7. A wellhead spill-proof suspension device for well workover according to claim 6, wherein: the external diameter of the big sealing ring of the lower joint is 63mm, the external diameters of the cylinder body of the suspender and the upper joint of the suspender are 61mm, and the external diameter of the convex ring of the cylinder body is 63 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762618.6U CN210948567U (en) | 2019-10-21 | 2019-10-21 | Wellhead anti-overflow suspension device for well repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762618.6U CN210948567U (en) | 2019-10-21 | 2019-10-21 | Wellhead anti-overflow suspension device for well repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210948567U true CN210948567U (en) | 2020-07-07 |
Family
ID=71383341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921762618.6U Active CN210948567U (en) | 2019-10-21 | 2019-10-21 | Wellhead anti-overflow suspension device for well repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210948567U (en) |
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2019
- 2019-10-21 CN CN201921762618.6U patent/CN210948567U/en active Active
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Effective date of registration: 20230613 Address after: 225009 No.1, Wenhui West Road, Yangzhou Economic Development Zone, Jiangsu Province Patentee after: SINOPEC Group Patentee after: SINOPEC GROUP JIANGSU PETROLEUM EXPLORATION BUREAU Co.,Ltd. Patentee after: JIANGSU OILFIELD MINING DEVELOPMENT Co.,Ltd. Address before: No. 188, Weiyang Road, Economic and Technological Development Zone, Yangzhou City, Jiangsu Province 225009 Patentee before: JIANGSU OILFIELD MINING DEVELOPMENT Co.,Ltd. |