CN-224214138-U - Hoop for detaching uncontrolled wellhead residual flange

Abstract

The utility model provides a hoop for detaching a residual flange of an uncontrolled wellhead, which comprises a hoop body, a hoop fixing mechanism and a handle, wherein the hoop body comprises a plurality of hoop petals which form a circular ring shape, the hoop petals are fixed through the hoop fixing mechanism, an annular groove is formed in the inner side of the hoop body, and the handle is uniformly distributed on the outer side of the circumference of the hoop body at intervals. The utility model has the advantages of simple structure, convenient installation and ensured operation safety.

Inventors

• LIU GUIYI
• MENG XINGPENG
• LIU JIE
• DENG JINGYU
• WANG LIANG
• QIAN WEIBIN
• LI HONGBING
• ZENG GUOXI
• KONG XIANGZHOU
• TAN WEI

Assignees

• 中国石油天然气集团有限公司
• 中国石油集团川庆钻探工程有限公司

Dates

Publication Date

20260508

Application Date

20250626

Claims (10)

1. 1. A hoop for detaching a residual flange of a wellhead out of control is characterized by comprising a hoop body, a hoop fixing mechanism and a handle, wherein, The hoop body comprises a plurality of hoop petals which form a circular ring shape, and the hoop petals are fixed through a hoop fixing mechanism; the handles are uniformly distributed on the circumferential outer side of the hoop body at intervals.
2. 2. The anchor ear for the uncontrolled wellhead residual flange dismantling of claim 1, wherein the anchor ear fixing mechanism comprises anchor ear connecting bolts, adjusting fixing blocks and fixing blocks, the fixing blocks are arranged at two tail ends of anchor ear flaps, internal threads are arranged in the fixing blocks, the anchor ear connecting bolts penetrate through the fixing blocks, and the adjusting fixing blocks are arranged at one ends of the anchor ear connecting bolts.
3. 3. The anchor ear for uncontrolled wellhead residual flange removal of claim 1 wherein the handles are distributed 90 ° in a radial cross section of the anchor ear.
4. 4. The hoop for uncontrolled wellhead residual flange removal of claim 1, wherein the handle diameter is 8-12 mm.
5. 5. The anchor ear for uncontrolled wellhead residual flange removal of claim 1, further comprising a lifting tab disposed circumferentially outward of the anchor ear.
6. 6. The anchor ear for uncontrolled wellhead residual flange removal of claim 1, wherein the anchor ear body lower end is provided with a shoulder.
7. 7. The hoop for uncontrolled wellhead residual flange removal of claim 6, wherein the shoulder has a thickness of 2.5-3.5 mm and a width of 8-12 mm.
8. 8. The anchor ear for uncontrolled wellhead residual flange removal of claim 5, further comprising a chain double loop, the chain double loop being connected to the lifting lug.
9. 9. The anchor ear for uncontrolled wellhead residual flange removal of claim 8, further comprising a pull lock, the pull lock being connected to the chain double loop.
10. 10. The hoop for removing the uncontrolled wellhead residual flange, which is disclosed in claim 1, is characterized in that the drift diameter of the hoop body is 813-817 mm, the height of the hoop body is 98-102 mm, and the thickness of the hoop body is 20-40 mm.

Description

Hoop for detaching uncontrolled wellhead residual flange Technical Field The utility model relates to the technical field of emergency assistance for out-of-control blowout of an oil and gas well, in particular to a hoop for removing a residual flange of an out-of-control wellhead. Background After the blowout of the oil gas well is out of control and catches fire, this is usually accompanied by collapse of the derrick, burnout of the wellhead, etc. When in emergency rescue, operations such as clearing obstacles around a wellhead, cutting the wellhead, resetting the wellhead and the like are required to be carried out so as to recover the re-control of the out-of-control well blowout. And the wellhead flange after cutting remains on the wellhead after cutting. Due to the high-temperature firing, the residual flange and the connecting bolt are bonded, and the taking out is difficult. At present, the pin is usually taken out by a mode of prizing the pin connected with the engineering machinery. This method involves the risk of the flange flying out to hurt people or equipment and is difficult to operate with a small flange clearance. The Chinese patent with publication number of CN105257933A, named sealing hoop, discloses a sealing hoop for winding pipe connector, which has annular groove inside, sealing glue filled in the groove, friction layer covered on the inner wall of the body, and puncture protrusion on the inner wall corresponding to the annular groove. The sealant is always sealed in the annular groove before installation, and when the sealant is installed, the friction layer can be punctured by the puncture protrusion, so that the sealant flows out to strengthen the connection between the hoop and the winding pipe. Which is clearly different from the use environment of the present application for objects. Therefore, it is necessary to design a hoop device capable of lifting the residual flange where adhesion or the like occurs. Disclosure of utility model The present utility model aims to address at least one of the above-mentioned deficiencies of the prior art. For example, it is an object of the present utility model to provide a simple structure anchor for uncontrolled wellhead residual flange removal. In order to achieve the above object, in one aspect, the present utility model provides a hoop for uncontrolled removal of a wellhead residual flange, the hoop may comprise a hoop body, a hoop securing mechanism and a handle, wherein, The hoop body can comprise a plurality of hoop petals which form a circular ring shape, the hoop petals are fixed through a hoop fixing mechanism, the inner side of the hoop body is provided with a ring groove, and the handles are uniformly distributed on the outer side of the circumference of the hoop body at intervals. According to one or more exemplary embodiments provided by an aspect of the present utility model, the anchor ear fixing mechanism may include anchor ear connecting bolts, an adjusting fixing block and a fixing block, wherein the fixing block is disposed at two tail ends of the anchor ear, an internal thread is disposed inside the fixing block, the anchor ear connecting bolts pass through the fixing block, and the adjusting fixing block is disposed at one end of the anchor ear connecting bolts. According to one or more exemplary embodiments provided in an aspect of the present utility model, the handles may be distributed at 90 ° in a radial cross section of the anchor ear. According to one or more exemplary embodiments provided in an aspect of the present utility model, the handle may have a diameter of 8-12 mm. According to one or more exemplary embodiments provided in one aspect of the present utility model, the anchor ear may further include a lifting lug disposed at a circumferential outer side of the anchor ear. According to one or more exemplary embodiments provided in an aspect of the present utility model, a shoulder may be provided at a lower end of the anchor ear body. According to one or more exemplary embodiments provided by an aspect of the present utility model, the thickness of the shoulder may be 2.5 to 3.5mm, and the width of the shoulder may be 8 to 12mm. According to one or more exemplary embodiments provided in an aspect of the present utility model, the anchor ear may further include a chain double loop, and the chain double loop is connected to the lifting lug. According to one or more exemplary embodiments provided in an aspect of the present utility model, the anchor ear may further include a pulling lock, and the pulling lock is connected to the chain double loop. According to one or more exemplary embodiments provided by the aspect of the utility model, the drift diameter of the anchor ear body is 813-817 mm, the anchor ear body height is 98-102 mm, and the thickness of the anchor ear body is 20-40 mm. Compared with the prior art, the utility model has the beneficial effects that at least one of the following contents is inc