Auxiliary support for installation of blowout prevention pipe

Abstract

The utility model relates to the technical field of wellhead installation equipment, in particular to a blowout prevention pipe installation auxiliary support which comprises a supporting rod and a bearing seat, and the bearing seat is provided with a bearing groove used for supporting a blowout prevention pipe in a matched mode. The upper end of the supporting rod is provided with an upper connecting structure connected with the bearing seat, the lower end of the supporting rod is provided with a ground supporting structure used for keeping the auxiliary support to be supported on the ground when the auxiliary support supports the blowout prevention pipe, and the bearing seat is connected to the upper connecting structure in a swinging mode so that the bearing groove can vertically correspond to the blowout prevention pipe by swinging the bearing seat when the blowout prevention pipe is lowered. The auxiliary support further comprises a limiting structure used for keeping the position of the bearing seat when the blowout prevention pipe is supported in the bearing groove, the position of the bearing groove relative to the blowout prevention pipe can be adjusted only by swinging the bearing seat independently, the auxiliary support does not need to be moved integrally, and the position of a ground supporting structure at the lower end of the supporting rod on the ground does not need to be changed. And the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wellhead installation equipment, in particular to an auxiliary support for installing a blowout preventer. Background Art

[0002] During the testing and construction of oil wells, gas wells, and water injection wells in oil fields, a blowout preventer is installed at the wellhead to ensure smooth lifting and lowering of the instrument and meet the well control requirements. The blowout preventer hydraulic lifting device is widely used in oil fields. The installation of the blowout preventer is realized by the hydraulic lifting principle. Workers can complete the erection of the blowout preventer and the replacement of the test instrument on the ground.

[0003] The basic structure of the lubricant preventer hydraulic lifting device can be seen in a logging lubricant preventer hydraulic lifting device disclosed in the Chinese utility model patent with authorization announcement number CN202673188U. The lubricant preventer hydraulic lifting device is a lubricant preventer lifting device, which includes a tilting bracket that can rotate under the drive of a hydraulic cylinder, one corner of the tilting bracket is welded to the lubricant preventer fixing sleeve, and one corner is connected to the tilting bracket fixing plate with a rotating shaft, the lubricant preventer fixing sleeve is fixed to the clamp head with a top screw, and the tilting bracket fixing plate is fixed to the On the clamp head short joint, when in use, connect the clamp head short joint to the oil pipe spool of the oil production tree and fix it with a top screw, install the blowout preventer into the blowout preventer fixing sleeve, put the logging instrument into the blowout preventer, and the hydraulic cylinder drives the tipping bracket to rotate to a vertical position to lift the blowout preventer upright. Loosen the top screw on the blowout preventer fixing sleeve, move the blowout preventer downward, connect the clamp head with the clamp, and complete the blowout preventer installation operation. After the test, use the hydraulic cylinder to drive the tipping bracket to rotate to tip the blowout preventer downward to facilitate the removal of the blowout preventer and the hydraulic lifting device.

[0004] When the blowout preventer is in a tilted and lowered state, that is, the blowout preventer is in a flat state, it is convenient for workers on the ground to install test instruments into the blowout preventer and tighten the blowout preventer plug on the blowout preventer. The blowout preventer is usually very long. For the convenience and safety of construction, an auxiliary blowout preventer installation bracket is usually used. The auxiliary blowout preventer installation bracket is supported on the ground to support the end of the blowout preventer away from the hydraulic lifting device. In this way, one axial end of the blowout preventer is supported on the tilting bracket of the hydraulic lifting device on the wellhead Christmas tree, and the other end is supported on the auxiliary bracket, thereby maintaining the flat posture of the blowout preventer and avoiding bending and sagging at the end of the blowout preventer that is not fixed on the hydraulic lifting device, so that workers can take and place test instruments and disassemble and install the blowout preventer plug.

[0005] The currently used auxiliary bracket for installing the blowout preventer includes a vertically arranged support rod, a supporting seat fixed at the upper end of the support rod, and a disc base fixed at the lower end of the support rod. The part of the upper end of the support rod that is welded and fixed to the supporting seat constitutes an upper connecting structure, and the disc base constitutes a ground supporting structure. The disc base is supported on the ground, and an arc-shaped groove that is adapted to the blowout preventer is provided on the supporting seat. The arc-shaped groove constitutes a supporting groove. The blowout preventer is tilted and placed into the supporting groove so that the auxiliary bracket supports the blowout preventer.

[0006] When the above-mentioned auxiliary bracket for installing the lubricant pipe is in use, in order to provide stable support, the auxiliary bracket for installing the lubricant pipe needs to be supported on a flat ground, and the position of the auxiliary bracket for installing the lubricant pipe is determined by visual inspection. When the lubricant pipe is lowered onto the auxiliary bracket, there will be a deviation between the position of the lubricant pipe and the supporting groove. In this way, the auxiliary bracket for installing the lubricant pipe needs to be moved left and right as a whole to align the lubricant pipe and the supporting groove up and down. In this way, for the uneven ground and potholes in the field, the support will be unstable after moving the auxiliary bracket, and the ground needs to be leveled again, which is more troublesome to use. Utility Model Content

[0007] The utility model aims to provide an auxiliary bracket for installing a lubricator, so as to solve the problem that the existing auxiliary bracket for installing a lubricator needs to be moved and adjusted as a whole when its supporting groove and the lubricator do not correspond up and down, which makes it inconvenient to use.

[0008] The technical solution of the auxiliary bracket for installing the blowout preventer of the utility model is:

[0009] A blowout preventer installation auxiliary bracket, the auxiliary bracket includes a support rod and a supporting seat, the supporting seat is provided with a supporting groove for adapting to support the blowout preventer and away from one end of the blowout preventer lifting device, the upper end of the support rod is provided with an upper connecting structure connected to the supporting seat, and the lower end is provided with a ground supporting structure for keeping the auxiliary bracket supported on the ground when the auxiliary bracket supports the blowout preventer, the supporting seat is swingably connected to the upper connecting structure so that the supporting groove and the blowout preventer can be corresponded up and down by swinging the supporting seat when the blowout preventer is lowered, and the auxiliary bracket also includes a limiting structure for maintaining the position of the supporting seat when the blowout preventer is supported in the supporting groove.

[0010] Furthermore, the upper end of the support rod is provided with a hinge structure hinged to the supporting seat, and the hinge structure forms an upper connecting structure.

[0011] Furthermore, the supporting seat is provided with two connecting parts, both of which are hinged with support rods, the limiting structure includes top screws respectively connected to the two support rods, and the supporting seat has a limiting matching part located below the connecting part, and the top screw is used to press on the limiting matching part to limit the supporting seat.

[0012] Furthermore, the connecting portion is a hinged ear, a bolt is passed through the hinged ear, and a through hole is provided at the upper end of the support rod for the bolt to pass through, and the through hole constitutes a hinged structure.

[0013] Furthermore, the supporting seat includes an outer cylinder and an inner rod, the inner rod is liftably arranged in the outer cylinder, the outer cylinder is connected to the upper connecting structure, and the supporting seat also includes a supporting body arranged at the upper end of the inner rod, and the supporting groove is arranged on the supporting body.

[0014] Furthermore, the inner rod is provided with an external thread, and the inner wall of the outer tube is provided with an internal thread so that the inner rod is threadedly connected in the outer tube.

[0015] Furthermore, the support rod is a telescopic rod.

[0016] Furthermore, the support rod includes an upper rod portion and a lower rod portion, and the adjacent ends of the upper rod portion and the lower rod portion are respectively provided with threads with opposite rotation directions and the threads are connected with screw sleeves so that the upper rod portion and the lower rod portion can be moved closer to or farther away from each other by screwing the screw sleeves.

[0017] Furthermore, the supporting seat includes a main seat body and a supporting body swingably arranged on the main seat body, the main seat body is connected to the upper connecting structure, the supporting groove is arranged on the supporting body, and the swing axis of the supporting body relative to the main seat body is perpendicular to the swing axis of the supporting seat relative to the support rod.

[0018] Furthermore, a support plate is hinged at the lower end of the support rod, and the support plate constitutes a ground support structure.

[0019] Beneficial effect: The utility model is improved on the basis of the auxiliary bracket for installing the blowout preventer in the prior art. By making the supporting seat swingably connected to the upper connecting structure, when the blowout preventer is lowered, the supporting seat can be swung to make the supporting groove correspond to the blowout preventer up and down, avoiding the position deviation of the blowout preventer and the supporting groove affecting the smooth lowering of the blowout preventer onto the auxiliary bracket. When the blowout preventer is supported in the supporting groove, the position of the supporting seat is maintained by cooperating with the limiting structure, so that the supporting seat, the support rod and the ground supporting structure form a stable support for the blowout preventer. In this way, for adjusting the position of the supporting groove relative to the blowout preventer, it is only necessary to swing the supporting seat alone, without moving the auxiliary bracket as a whole and changing the position of the ground supporting structure at the lower end of the support rod on the ground, which is conducive to improving ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of an auxiliary bracket for installing a lubricant preventer of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the support body installation structure.

[0022] In the figure: 1, supporting body; 11, supporting groove; 12, first clamping claw; 13, hinged seat; 2, inner rod; 3, outer tube; 4, hinged ear; 5, first bolt; 6, second bolt; 7, top screw; 8, support rod; 81, screw sleeve; 9, support plate; 10, second clamping claw. DETAILED DESCRIPTION

[0023] The support seat of the auxiliary bracket for installing the blowout preventer of the utility model can be swingably connected to the upper connecting structure. When the blowout preventer is lowered, the support seat can be swung to make the support groove correspond to the blowout preventer up and down, so as to avoid the position deviation between the blowout preventer and the support groove affecting the smooth lowering of the blowout preventer onto the auxiliary bracket. When the blowout preventer is supported in the support groove, the position of the support seat is maintained by cooperating with the limiting structure, so that the support seat, the support rod and the ground support structure form a stable support for the blowout preventer. In this way, for adjusting the position of the support groove 11 relative to the blowout preventer, it is only necessary to swing the support seat alone, and there is no need to move the auxiliary bracket as a whole, and there is no need to change the position of the ground support structure at the lower end of the support rod on the ground, which is conducive to improving ease of use.

[0024] Embodiment of the auxiliary bracket for installing the anti-blowout pipe of the utility model:

[0025] The auxiliary bracket for installing the lubricant pipe is used to support the lubricant pipe at both ends of the axial direction when the lubricant pipe is laid flat in cooperation with the lubricant pipe lifting device at the wellhead. Figure 1 , Figure 2 As shown, the auxiliary support includes a support rod 8 and a support seat, the support seat includes a main seat body and a support body 1, the main seat body includes an outer tube 3 and an inner rod 2, the support seat is hinged to the upper end of the support rod 8, and the support body 1 of the support seat is provided with a support groove 11 for adapting to support the lubricant away from the end of the lubricant lifting device. The lower end of the support rod 8 is hinged to a support plate 9, and the support plate 9 is used to keep the auxiliary support stably supported on the ground support structure when the auxiliary support supports the lubricant. When the lubricant is lowered, the support seat can be swung to make the support groove 11 correspond to the lubricant up and down. The auxiliary support also includes a limiting structure for maintaining the position of the support seat when the lubricant is supported in the support groove 11, so that the support seat, the support rod 8 and the ground support structure can form a stable support for the lubricant.

[0026] by Figure 1The left and right directions in the figure are the left and right directions when the auxiliary bracket for installing the lubricating pipe is used. The two axial ends of the lubricating pipe when it is laid flat are the front end and the rear end respectively. The rotation axis direction of the lubricating pipe when it is tilted down from the vertical standing state to the horizontal state is the left and right direction. The main body of the supporting body 1 is an arc-shaped sheet body, and the arc-shaped sheet body forms an upward supporting groove 11, which is through-through from front to back, and the groove wall surface of the supporting groove 11 is an arc surface to match the outer peripheral surface of the lubricating pipe. A hinge seat 13 is provided on the lower side of the main body of the supporting body 1, and a through hole that passes through the left and right is provided on the hinge seat 13. A hinge slot is provided on the upper end of the inner rod 2, and the hinge seat 13 extends into the hinge slot. The left and right side walls of the hinge slot are provided with connection holes corresponding to the through holes on the hinge seat 13 so that the supporting body 1 can be hinged to the main seat body of the supporting seat by passing the first bolt 5. The first bolt 5 serves as the hinge axis, and the hinge axis direction here is the left and right direction. When the first bolt 5 is loosened, the support body 1 can be swung relative to the inner rod 2 and the swing axis direction is in the left and right direction. When the first bolt 5 is tightened, the left and right side walls of the hinge groove can clamp the hinge seat 13 to maintain the position of the support body 1. The first bolt 5 can be tightened by cooperating with the nut. The end of the first bolt 5 is provided with an arc petal for manual quick screwing. The support body 1 is swung for pitch adjustment to adapt to the position of the lubricant. Even if the lubricant is not completely horizontal when it is lowered to a flat state, the support body 1 can be adjusted to make the lubricant contact well with the wall surface of the support groove 11.

[0027] The inner rod 2 is escalably arranged in the outer cylinder 3, which is passed through from top to bottom. The length of the outer cylinder 3 is smaller than that of the inner rod 2. The inner rod 2 is provided with an external thread, and the inner wall of the outer cylinder 3 is provided with an internal thread so that the inner rod 2 is threadedly connected in the outer cylinder 3. The supporting body 1 is located above the outer cylinder 3, and the outer cylinder 3 is hinged to the support rod 8. The inner rod 2 can be raised and lowered by screwing the inner rod 2, and then the height of the supporting body 1 can be adjusted to facilitate the support of the lubricant preventer.

[0028] The outer cylinder 3 includes a main cylinder body and two hinge ears 4 arranged on the left and right sides of the main cylinder body. The inner rod 2 is threadedly connected to the main cylinder body, and the hinge ears 4 are fixedly connected to the middle part of the inner wall of the main cylinder body in the up and down direction. The left and right hinge ears 4 constitute two connecting parts arranged side by side on the supporting seat, and the two hinge ears 4 are respectively hinged to the corresponding support rods 8.

[0029] The upper end of the support rod 8 is provided with a hinge structure hinged to the hinge ear 4 of the supporting seat, the hinge structure is a hinge hole that passes through the front and back, the hinge structure forms an upper connecting structure, the outer tube 3 is connected to the upper connecting structure, the hinge ear 4 is provided with a through hole corresponding to the hinge hole at the upper end of the support rod 8, so that the hinge ear 4 and the upper end of the support rod 8 can be hinged by passing the second bolt 6, the direction of the hinge axis here is the front and back direction, the second bolt 6 constitutes the corresponding hinge axis, the hinge hole at the upper end of the support rod 8 constitutes a through hole for the second bolt 6 to pass through, and the swing axis of the support body 1 relative to the main seat body is perpendicular to the swing axis of the supporting seat relative to the support rod 8. The two hinged ears 4 of the supporting seat are hinged to the two supporting rods 8 respectively, so that the supporting seat can swing left and right relative to the supporting rods 8, and then the left and right position of the supporting groove 11 can be adjusted, so that the supporting groove 11 corresponds to the upper and lower positions of the lubricant pipe, so that the lubricant pipe can be smoothly lowered into the supporting groove 11. The upper and lower position deviations of the supporting groove 11 and the lubricant pipe are small, so the swing amplitude required for the supporting seat is also very small, which does not affect the supporting stability of the auxiliary bracket for the lubricant pipe.

[0030] The upper end of the support rod 8 is connected with a top screw 7 below the hinge hole. The top screws 7 on the two support rods 8 constitute a limiting structure. The top screw 7 is used to press on the part of the outer tube 3 located between the left and right support rods 8. The part of the outer tube 3 for the top screw 7 to press constitutes a limiting matching part located below the hinge ear 4. When the top screw 7 is loosened, the support seat can be swung. The support seat can be limited by screwing the left and right top screws 7. The structure is simple and easy to adjust. It can also be used to adjust the left and right swing amplitude of the outer tube 3. The top pressing end of the top screw 7 is provided with a large head structure to increase the top pressing contact area, and the screwing end of the top screw 7 is provided with an arc petal to facilitate manual quick screwing.

[0031] The support rod 8 is a telescopic rod, and the support rod 8 includes an upper rod and a lower rod. The length of the upper rod is much greater than that of the lower rod. The upper end of the upper rod constitutes the upper end of the support rod 8, and the lower end of the lower rod constitutes the lower end of the support rod 8. The adjacent ends of the upper rod and the lower rod are respectively provided with threads with opposite rotation directions and are threadedly connected with a screw sleeve 81. By screwing the screw sleeve 81, the upper rod and the lower rod can be moved closer or farther from each other to achieve the length adjustment of the support rod 8.

[0032] The lower end of the support rod 8 is hinged to the support plate 9, which is a circular plate. The center of the support plate 9 is connected to the lower end of the support rod 8 through a ball joint structure, which is convenient for adjusting the separation angle of the two support rods 8. The support plate 9 constitutes a ground support structure, increases the contact area with the ground, and is convenient for forming a stable support to avoid sinking into the ground after being loaded, which causes the auxiliary bracket to be unstable.

[0033] A first claw 12 is provided at the lower side of one end of the supporting body 1. When the auxiliary bracket is folded, the first claw 12 is clamped on the inner rod 2 to fix the rotatable supporting body 1. A second claw 10 is provided at the lower part of one of the supporting rods 8. The claw is an arc-shaped elastic strip. After the two supporting rods 8 are folded and folded, the second claw 10 can be clamped on the other supporting rod 8 to facilitate carrying the auxiliary bracket.

[0034] The outer tube 3 and the inner rod 2, the upper rod portion and the lower rod portion of the support rod 8 and the screw sleeve 81 are all threadedly connected by trapezoidal threads, which can increase the bearing capacity of the auxiliary bracket and reduce the probability of thread damage.

[0035] During use, first determine the approximate height of the auxiliary support for installing the lubricating pipe according to the wellhead height and the length of the lubricating pipe, then adjust the angle of separation of the two support rods 8 of the auxiliary support and the height of the inner rod 2 to adapt, and adjust the screw sleeves 81 on the left and right support rods 8 to make the auxiliary support in a stable and balanced state. During the installation of the lubricating pipe, one end of the lubricating pipe is fixed on the tilting bracket of the lubricating pipe lifting device, and the other end is placed on the auxiliary support for installing the lubricating pipe, so that the lubricating pipe is roughly flat, and then the test instrument is placed in the lubricating pipe, and the lubricating pipe plug is installed. After the test is completed, the lubricating pipe is tilted down through the tilting bracket. During the lowering process, one end of the lubricating pipe is fixed on the tilting bracket, and the other end is supported by the auxiliary support for installing the lubricating pipe. If the support groove 11 of the auxiliary support is not directly below the lubricating pipe, the support seat can be quickly supported by screwing the top screw 7 and swinging the support seat left and right to adapt to the adjustment position. After the lubricating pipe is placed in place, the lubricating pipe plug is then removed and the test instrument is taken out.

[0036] Since one end of the lubricator is fixed on the lifting device, the main gravity of the lubricator is borne by the lifting device, and the lubricator installation auxiliary bracket is mainly used to prevent the end of the lubricator away from the wellhead from sagging, so the force is very small. When the lubricator installation auxiliary bracket is used, the separation angle of the two support rods 8 is small. After the lubricator is received, the contact between the two support plates 9 and the ground can be used to maintain force balance. The use of this auxiliary bracket not only improves construction efficiency, but also improves construction safety.

[0037] In other implementations, a fixed mounting seat may be fixed to the upper end of the support rod, and the upper ends of the two support rods are fixedly connected to the fixed mounting seat. The fixed mounting seat constitutes an upper connecting structure, and the supporting seat is hinged on the fixed mounting seat.

[0038] In other embodiments, the support rod may also be provided with one, a hinge plate is provided on the upper part of the support rod, the hinge plate constitutes an upper connecting structure, the supporting seat is hinged on the hinge plate, and the hinge plate is also provided with a plurality of pin through holes, and the supporting seat is provided with a pin through hole corresponding to any pin through hole, so that the supporting seat can be limited by the penetration of the positioning pin when the supporting seat swings to the corresponding position. At this time, in order to ensure reliable support, the disk surface of the support plate at the lower end of the support rod should be large enough to keep the auxiliary bracket supported on the ground.

[0039] In other embodiments, a plurality of positioning pin holes are axially provided on the outer cylinder, and a radially penetrating positioning through hole is provided on the inner rod, so that when the inner rod slides relative to the outer cylinder and the positioning through hole corresponds to any positioning pin hole, the position of the inner rod is maintained by inserting the positioning pin, and the lifting and lowering adjustment of the inner rod is realized.

[0040] In other implementations, the upper rod portion and the lower rod portion may also be directly threadedly connected to achieve telescopic movement of the support rod.

[0041] In other implementations, the lower end surface of the support rod may also be directly supported on the ground, and the lower end surface of the support rod constitutes a ground support structure.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An auxiliary bracket for installing a lubricant preventer, the auxiliary bracket comprising a support rod and a support seat, the support seat being provided with a support groove for adapting and supporting the lubricant preventer at one end away from the lubricant preventer lifting device, the upper end of the support rod being provided with an upper connecting structure connected with the support seat, and the lower end being provided with a ground supporting structure for keeping the auxiliary bracket supported on the ground when the auxiliary bracket supports the lubricant preventer, wherein the auxiliary bracket is characterized in that: The support seat is swingably connected to the upper connecting structure so that when the lubricant is lowered, the support groove and the lubricant can be aligned up and down by swinging the support seat. The auxiliary bracket also includes a limiting structure for maintaining the position of the support seat when the lubricant is supported in the support groove.

2. The auxiliary bracket for installing a lubricant preventer according to claim 1, characterized in that: The upper end of the support rod is provided with a hinge structure hinged to the supporting seat, and the hinge structure forms an upper connecting structure.

3. The auxiliary bracket for installing a lubricant preventer according to claim 2, characterized in that: The supporting seat is provided with two connecting parts, both of which are hinged with support rods. The limiting structure includes top screws respectively connected to the two support rods. The supporting seat has a limiting matching part located below the connecting part, and the top screw is used to press on the limiting matching part to limit the supporting seat.

4. The auxiliary bracket for installing a lubricant preventer according to claim 3 is characterized in that: The connecting part is a hinged ear, a bolt is passed through the hinged ear, and a through hole for the bolt to pass through is arranged at the upper end of the support rod, and the through hole forms a hinged structure.

5. The auxiliary bracket for installing a lubricator according to claim 1, 2, 3 or 4, characterized in that: The supporting seat comprises an outer cylinder and an inner rod, wherein the inner rod is liftably arranged in the outer cylinder, the outer cylinder is connected to the upper connecting structure, and the supporting seat further comprises a supporting body arranged at the upper end of the inner rod, and the supporting groove is arranged on the supporting body.

6. The auxiliary bracket for installing a lubricator according to claim 5, characterized in that: The inner rod is provided with an external thread, and the inner wall of the outer cylinder is provided with an internal thread so that the inner rod is threadedly connected in the outer cylinder.

7. The auxiliary bracket for installing a lubricator according to claim 1, 2, 3 or 4, characterized in that: The support rod is a telescopic rod.

8. The auxiliary bracket for installing a lubricant preventer according to claim 7, characterized in that: The support rod comprises an upper rod part and a lower rod part. The adjacent ends of the upper rod part and the lower rod part are respectively provided with threads with opposite rotation directions and are threadedly connected with screw sleeves so that the upper rod part and the lower rod part can be moved closer to or farther from each other by screwing the screw sleeves.

9. The lubricator installation auxiliary bracket according to claim 1, 2, 3 or 4, characterized in that: The supporting seat includes a main seat body and a supporting body swingably arranged on the main seat body, the main seat body is connected to the upper connecting structure, the supporting groove is arranged on the supporting body, and the swing axis of the supporting body relative to the main seat body is perpendicular to the swing axis of the supporting seat relative to the support rod.

10. The lubricator installation auxiliary bracket according to claim 1, 2, 3 or 4, characterized in that: A support plate is hinged at the lower end of the support rod, and the support plate constitutes a ground support structure.

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