Flange clamping and removing integrated device for blowout emergency rescue

Abstract

The invention discloses a flange clamping and removing integrated device for emergency blowout rescue. The device comprises a beam body, an upper clamping body, a lower clamping body, a limiting sleeve, a pressing nut, a pressing sleeve, a tensioning spring, a first tooth plate, a second tooth plate, a hole claw, a wedge body, a lifting ring, a connecting cable, a beam body roller, an upper lug plate, a lower clamping body roller, a lower lug plate and a fixing pin. The device has the advantages of completely adopting a mechanical structure, being simple, practical, safe and reliable in component composition, being beneficial to avoiding the influence of high temperature of a wellhead and reducing operation links through simple operation, being capable of efficiently and safely completing clamping, automatic releasing and removing work of a damaged residual flange, and improving the working efficiency. And the safety risk to operators and emergency rescue equipment in the removal process is reduced, and the emergency rescue efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of emergency rescue of uncontrolled wellheads of oil and gas fields blowouts, and particularly relates to an integrated flange clamping and removing device for emergency rescue of blowouts. Background Art

[0002] As oil and gas exploration and development develops in depth into new areas, new blocks, and new formations, various risks and challenges are intertwined and superimposed, and the well control situation has become more severe and complex. The exploration and development of high-pressure, high-yield, and high-sulfur oil and gas wells have put forward severe tests for existing drilling technology, well control technology, and emergency rescue technology. In particular, after a blowout and fire in a high-pressure oil and gas well, the on-site environment for fire rescue operations is harsh. High-intensity thermal radiation, lateral flames, and high-pressure fluids can cause casualties among rescue workers and damage to rescue equipment, forcing the interruption of rescue operations. In the process of restoring the uncontrolled wellhead, the damaged blowout preventer group needs to be cut off. The cutting position is mainly from above the lower flange of the four-way to below the side through hole. The residual flange needs to be removed manually after the bolts are removed, and then the new wellhead device is installed. During the removal of the flange, the residual flange is very easy to fly out and injure people under the action of high-pressure fluid. At the same time, there is also the phenomenon that the flange is difficult to remove due to adhesion, which increases the difficulty of rescue. At present, no literature or reports on flange clamping and removal devices for blowout rescue have been found. Summary of the invention

[0003] In order to solve the above problems, the object of the present invention is to provide an integrated flange clamping and removing device for blowout rescue.

[0004] In order to achieve the above-mentioned purpose, the integrated flange clamping and removal device for blowout rescue provided by the present invention includes a beam body, an upper clamping body, a lower clamping body, a limit sleeve, a clamping nut, a clamping sleeve, a tensioning spring, a first tooth plate, a second tooth plate, a hole claw, a wedge, a lifting ring, a connecting rope, a beam body roller, an upper ear plate, a lower clamping body roller, a lower ear plate and a fixing pin; wherein, the upper part of the beam body is cylindrical and has an external thread, the cross-section of the lower part is rectangular and an inverted U-shaped opening is formed at the lower end, and a pair of pin shaft holes are symmetrically formed at the lower ends of the two side plates at the inverted U-shaped opening; the two ends of the wheel axles of the multiple beam body rollers are respectively connected to the two side edges of the inverted U-shaped opening on the beam body; one end of the two upper ear plates is respectively connected to the two sides on the beam body The lower edge of one side of the plate; a square through hole is formed at one end of the upper card body and is sleeved on the outer side of the upper end of the lower part of the beam body, and a first trapezoidal groove is formed on the bottom surface of the other side by being recessed upward along the horizontal direction; the lower card body is an L-shaped structure composed of a vertical rod and a horizontal rod, wherein the middle and upper part of the vertical rod is inserted into the space between the two side plates on the beam body, and a plurality of lower card body rollers located below the beam body rollers are respectively installed on the two opposite side surfaces of the upper part of the vertical rod, and a pin shaft hole is formed through the other two side surfaces, and the lower card body and the beam body are connected together by using a fixing pin to penetrate the lower card body and the pin shaft hole on the beam body, so that the vertical rod on the lower card body can rotate around the fixing pin in the inverted U-shaped opening space on the beam body; the outer side of the horizontal rod The upper edge of the top surface is laterally recessed downward to form a second trapezoidal groove, and the position of the cross bar corresponds to that of the upper card body; one end of the two lower ear plates is respectively connected to the same side edge of the two opposite side surfaces of the lower part of the vertical rod, and corresponds to the position of the two upper ear plates respectively; the limit sleeve is sleeved on the outer side of the inverted U-shaped opening on the beam body in a manner that it can slide up and down, and at least two hand-release lifting ears are provided on the side surface; the pressing sleeve is sleeved on the upper part of the beam body, and the upper side uses the compression nut to cooperate with the external thread on the beam body to press the upper card body; the upper and lower ends of the two tensioning springs are respectively connected to the upper ear plate and the lower ear plate on the same side, and the lower card body is pulled to rotate around the fixing pin by its own tensioning force to realize the hand release of the device; the first The cross-sections of the tooth plate and the second tooth plate are both trapezoidal, and are respectively installed in the first trapezoidal groove of the upper clamping body and the second trapezoidal groove of the lower clamping body; the hole claw is cylindrical with a truncated cone-shaped through hole inside, and the outer circumferential surface is formed with hardened teeth along the circumferential direction, and a plurality of slits are formed on the lower side wall along the axial interval; the wedge is truncated cone-shaped, the upper part is located outside the upper end of the hole claw and is provided with an internal threaded hole, and the lower part is located in the through hole of the hole claw; the lower part of the lifting ring is provided with an external thread that matches the internal threaded hole on the wedge; the two ends of at least one connecting rope are respectively connected to a hand-dropping lifting ear on the limiting sleeve and a circular ring on the upper end of the lifting ring, and one end of another connecting rope is connected to a hand-dropping lifting ear on the limiting sleeve, and the other end is connected to the lifting equipment.

[0005] The bottom surface of the first tooth plate and the top surface of the second tooth plate are respectively formed with hardened teeth for biting the flange to keep the clamping state of the device stable.

[0006] The integrated flange clamping and removal device for blowout rescue also includes a first limit plate and a second limit plate respectively installed on the side surfaces of the upper clamping body and the lower clamping body located outside the two ends of the first tooth plate and the second tooth plate.

[0007] The beam body has different lengths so as to be suitable for clamping flanges of different specifications.

[0008] The integrated flange clamping and removal device for blowout rescue provided by the present invention has the following beneficial effects: it adopts a completely mechanical structure, and the component composition is simple, practical, safe and reliable. Through simple operation, it is helpful to avoid the influence of high temperature at the wellhead and reduce the operation links. It can efficiently and safely complete the clamping, automatic release and removal of the damaged residual flange, reduce the safety risks to the operating personnel and rescue equipment during the removal process, and improve the efficiency of rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A three-dimensional diagram of the integrated flange clamping and removal device for blowout rescue provided by the present invention. DETAILED DESCRIPTION

[0010] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0011] like Figure 1As shown, the integrated device for flange clamping and removal for blowout rescue provided by the present invention comprises a beam body 1, an upper clamping body 2, a lower clamping body 3, a limiting sleeve 4, a clamping nut 5, a clamping sleeve 6, a tensioning spring 7, a first tooth plate 9, a second tooth plate 9a, a hole claw 10, a wedge 11, a lifting ring 12, a connecting rope 13, a beam body roller 14, an upper ear plate 15, a lower clamping body roller 18, a lower ear plate 21 and a fixing pin 22; wherein, the upper portion of the beam body 1 is cylindrical and provided with an external thread 16, the cross-section of the lower portion is rectangular and an inverted U-shaped opening is formed at the lower end, and a pair of pin shaft holes are symmetrically formed at the lower ends of the two side plates at the inverted U-shaped opening; the two ends of the wheel axles of the multiple beam body rollers 14 are respectively connected to the two side edges of the inverted U-shaped opening on the beam body 1; one end of the two upper ear plates 15 is respectively connected to the beam body 1 The lower edge of one side of the upper two side plates; one end of the upper card body 2 is formed with a square through hole that is sleeved on the outer side of the upper end of the lower part of the beam body 1, and the bottom surface of the other side is recessed upwardly to form a first trapezoidal groove 20; the lower card body 3 is an L-shaped structure composed of a vertical rod and a horizontal rod, wherein the middle and upper part of the vertical rod is inserted into the space between the two side plates on the beam body 1, and a plurality of lower card body rollers 18 located below the beam body rollers 14 are respectively installed on the two opposite side surfaces of the upper part of the vertical rod, and a pin shaft hole is formed between the other two side surfaces, and the lower card body 3 and the beam body 1 are connected together by means of a fixing pin 22 passing through the lower card body 3 and the pin shaft hole on the beam body 1, so that the vertical rod on the lower card body 3 can rotate around the fixing pin 22 in the inverted U-shaped opening space on the beam body 1; the upper side of the outer top surface of the horizontal rod is horizontally A second trapezoidal groove 20a is formed by being recessed downward, and the position of the cross bar corresponds to that of the upper card body 2; one end of the two lower ear plates 21 are respectively connected to the same side edge of the two opposite side surfaces of the lower part of the vertical bar, and correspond to the positions of the two upper ear plates 15 respectively; the limit sleeve 4 is sleeved on the outer side of the inverted U-shaped opening on the beam body 1 in a manner that can slide up and down, and at least two hand-release lifting ears 19 are provided on the side surface; the pressing sleeve 6 is sleeved on the upper part of the beam body 1, and the upper side uses the compression nut 5 to cooperate with the external thread 16 on the beam body 1 to press the upper card body 2; the upper and lower ends of the two tensioning springs 7 are respectively connected to the upper ear plate 15 and the lower ear plate 21 on the same side, and the lower card body 3 is pulled to rotate around the fixing pin 22 by its own tensioning force to realize the hand release of the device; the first tooth plate 9 and the second The cross-sections of the tooth plates 9a are all trapezoidal, and they are respectively installed in the first trapezoidal groove 20 of the upper card body 2 and the second trapezoidal groove 20a of the lower card body 3; the hole claw 10 is cylindrical with a truncated cone-shaped through hole inside, and the outer circumferential surface is formed with hardened teeth along the circumferential direction, and a plurality of slits are formed on the lower side wall at intervals along the axial direction; the wedge body 11 is truncated cone-shaped, the upper part is located outside the upper end of the hole claw 10 and is provided with an internal threaded hole, and the lower part is located in the through hole of the hole claw 10; the lower part of the lifting ring 12 is provided with an external thread that matches the internal threaded hole on the wedge body 11; the two ends of at least one connecting rope 13 are respectively connected to a hand-dropping lifting ear 19 on the limiting sleeve 4 and a circular ring on the upper end of the lifting ring 12, and one end of another connecting rope 13 is connected to a hand-dropping lifting ear 19 on the limiting sleeve 4, and the other end is connected to the lifting equipment.

[0012] The bottom surface of the first tooth plate 9 and the top surface of the second tooth plate 9a are respectively formed with hardened teeth for biting the flange to keep the clamping state of the device stable.

[0013] The integrated flange clamping and removal device for blowout rescue also includes a first limit plate 8 and a second limit plate 8a respectively installed on the side surfaces of the upper clamping body 2 and the lower clamping body 3 located outside the two ends of the first tooth plate 9 and the second tooth plate 9a.

[0014] The beam body 1 has different lengths to be suitable for clamping flanges of different specifications.

[0015] The method for using the integrated flange clamping and removal device for blowout rescue provided by the present invention is described as follows:

[0016] When a blowout occurs and a fire breaks out, and the residual flange cut off needs to be removed, the construction personnel first remove some of the bolts on the residual flange. At least two devices are required to remove a residual flange each time. Then the limit sleeve 4 is pulled down to the outside of the overlapped part of the beam body 1 and the upper vertical rod of the lower card body 3, and the beam body roller 14 and the lower card body roller 18 are used to press the limit sleeve 4 from the inside to limit the relative position of the beam body 1 and the lower card body 3, so that the beam body 1 and the lower card body 3 maintain an "L" shape, and then the upper card body 2 and the lower card body 3 are placed on the upper and lower surfaces of the residual flange respectively. All the devices used are symmetrically arranged on the residual flange, and then pressurized by the compression nut 5 and the compression sleeve 6 until the residual flange is clamped by the upper card body 2, the lower card body 3 and the beam body 1, and the hardened teeth on the first tooth plate 9 and the second tooth plate 9a are used to bite the residual flange to prevent the residual flange from flying out and injuring people under the action of the high-pressure fluid. Then each hole claw 10 is inserted into a suitable screw hole on the residual flange. After the remaining bolts are removed, the lifting equipment is started, and the limit sleeve 4 is lifted up through the connecting rope 13 connected to it, so that the limit sleeve 4 leaves the outer side of the overlapping part between the beam body 1 and the upper vertical rod of the lower card body 3. At this time, the lower card body 3 will lose the restriction, and under the action of the tensioning force of the tensioning spring 7 itself, the lower card body 3 will rotate around the fixing pin 22 to realize the release of the device, that is, the upper card body 2, the lower card body 3 and the beam body 1 loosen the residual flange; continue to lift the limit sleeve 4, thereby driving the wedge body 11 upward through the connecting rope 13 connected to the lifting ring 12, thereby enlarging the hole claw 10, and then using the hardened teeth on the hole claw 10 to bite the screw hole, so as to remove the residual flange.

Claims

1. An integrated flange clamping and removal device for blowout rescue, characterized in that: The integrated flange clamping and removal device for blowout rescue comprises a beam body (1), an upper clamping body (2), a lower clamping body (3), a limiting sleeve (4), a clamping nut (5), a pressing sleeve (6), a tensioning spring (7), a first tooth plate (9), a second tooth plate (9a), a hole claw (10), a wedge (11), a lifting ring (12), a connecting rope (13), a beam body roller (14), an upper ear plate (15), a lower clamping body roller (18), a lower ear plate (21) and a fixing pin (22); wherein the upper part of the beam body (1) is cylindrical and provided with an external thread (16), the cross section of the lower part is rectangular and an inverted U-shaped opening is formed at the lower end, and a pair of pin shaft holes are symmetrically formed at the lower ends of the two side plates at the inverted U-shaped opening; the plurality of beam body rollers (14) are provided with a plurality of The two ends of the wheel axle are respectively connected to the two side edges of the inverted U-shaped opening on the beam body (1); one end of the two upper ear plates (15) is respectively connected to the lower edge of one side of the two side plates on the beam body (1); one end of the upper card body (2) is formed with a square through hole which is sleeved on the outer side of the upper end of the lower part of the beam body (1), and the bottom surface of the other side is formed with a first trapezoidal groove (20) which is recessed upward along the horizontal direction; the lower card body (3) is an L-shaped structure composed of a vertical rod and a horizontal rod, wherein the middle and upper part of the vertical rod is inserted into the space between the two side plates on the beam body (1), and a plurality of lower card body rollers (18) located below the beam body rollers (14) are respectively installed on the two opposite side surfaces of the upper part of the vertical rod, and a pin shaft hole is formed between the other two side surfaces, and a fixing pin (22) is used to penetrate the lower card body. The lower card body (3) and the beam body (1) are connected together by means of a pin shaft hole on the card body (3) and the beam body (1), so that the vertical rod on the lower card body (3) can rotate around the fixing pin (22) in the inverted U-shaped opening space on the beam body (1); a second trapezoidal groove (20a) is formed on the outer top surface of the cross bar by being recessed downward in the horizontal direction, and the position of the cross bar corresponds to that of the upper card body (2) in the vertical direction; one end of the two lower ear plates (21) is respectively connected to the same side edge of two opposite side surfaces of the lower part of the vertical rod, and respectively corresponds to the position of the two upper ear plates (15) in the vertical direction; the limiting sleeve (4) is sleeved on the outer side of the inverted U-shaped opening on the beam body (1) in a manner that it can slide up and down, and at least two handle-dropping ears (19) are provided on the side surface; the pressing sleeve (6) is sleeved The upper clamping body (2) is compressed by the upper side of the beam body (1) by the cooperation of the clamping nut (5) and the external thread (16) on the beam body (1); the upper and lower ends of the two tensioning springs (7) are respectively connected to the upper ear plate (15) and the lower ear plate (21) located on the same side, and the lower clamping body (3) is pulled to rotate around the fixing pin (22) by its own tensioning force to realize the device release; the cross-sections of the first tooth plate 9 and the second tooth plate (9a) are both trapezoidal, and are respectively installed in the first trapezoidal groove (20) of the upper clamping body (2) and the second trapezoidal groove (20a) of the lower clamping body (3); the hole claw (10) is cylindrical with a truncated cone-shaped through hole inside, and hardened teeth are formed on the outer circumferential surface along the circumferential direction, and a plurality of slits are formed on the lower side wall along the axial direction;The wedge (11) is in a truncated cone shape, the upper part of which is located outside the upper end of the hole claw (10) and is provided with an internal thread hole, and the lower part is located in the through hole of the hole claw (10); the lower part of the lifting ring (12) is provided with an external thread matching the internal thread hole on the wedge (11); the two ends of at least one connecting rope (13) are respectively connected to a hand-dropping lifting ear (19) on the limiting sleeve (4) and a circular ring on the upper end of the lifting ring (12); one end of another connecting rope (13) is connected to a hand-dropping lifting ear (19) on the limiting sleeve (4), and the other end is connected to the lifting equipment. ; 2. The integrated flange clamping and removal device for blowout rescue according to claim 1 is characterized in that: The bottom surface of the first tooth plate (9) and the top surface of the second tooth plate (9a) are respectively formed with hardened teeth for biting the flange to maintain a stable clamping state of the device.

3. The integrated flange clamping and removal device for blowout rescue according to claim 1 is characterized in that: The integrated flange clamping and removal device for blowout rescue also includes a first limit plate (8) and a second limit plate (8a) respectively mounted on the side surfaces of the upper clamping body (2) and the lower clamping body (3) located outside the two ends of the first tooth plate (9) and the second tooth plate (9a).

4. The integrated flange clamping and removal device for blowout rescue according to claim 1 is characterized in that: The beam body (1) has different lengths so as to be suitable for clamping flanges of different specifications.

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