Dual-purpose well control blowout preventer for oil and gas wells

Abstract

The application relates to the technical field of mining, in particular to a dual-purpose well control blowout prevention base pier for oil and gas wells, which comprises a base pier body, support bases are fixed to the bottom surface of the base pier body at four corners, a connecting plate is fixed to the bottom surface of the base pier body, two hoop plates are installed at the lower ends of the two ends of the connecting plate, two screw rods are inserted into the two ends of the two hoop plates, the top ends of the screw rods penetrate through the connecting plate, a silk sleeve is sleeved on the top end of the screw rod through screwing, the bottom end of the silk sleeve is fixed to the top surface of the connecting plate, and a plurality of clamping blocks are inserted into the surface of the silk sleeve. The beneficial effect is that the plurality of clamping blocks are inserted into the surface of the silk sleeve, a pushing ring is arranged to push and squeeze the clamping blocks to clamp the screw rod, when the screw rod and the silk sleeve are screwed and locked, the pushing ring is screwed downward, the pushing ring pushes the clamping blocks along the inclined surface of the top surface of the clamping blocks to retract into the insertion hole, the clamping blocks tightly clamp the rubber ring on the surface of the screw rod, the friction between the screw rod and the silk sleeve is increased, and the screw rod and the silk sleeve are effectively prevented from loosening during use.

Description

Technical Field

[0001] This invention relates to the field of mining technology, specifically to a well control blowout prevention base for dual-purpose oil and gas wells. Background Technology

[0002] In oil and gas well operations, well control and blowout prevention are crucial for ensuring operational safety. Dual-purpose oil and gas well blowout prevention piers, as important well control equipment, primarily function to prevent oil and gas from escaping by pressing against the oil and gas pipeline as a counterweight when abnormal conditions occur, thus ensuring the safety of personnel and equipment.

[0003] However, existing well-controlled blowout preventer (BOP) bases have some shortcomings in their connection and fixation to oil and gas pipelines. A simple clamping plate and threaded rod connection method is typically used. While this provides initial fixation, in actual use, the complex operating environment of oil and gas wells, subjected to various external forces such as vibration and impact, can easily lead to loosening of the connection between the threaded rod and the threaded sleeve. Once the connection loosens, the clamping force of the clamping plate on the oil and gas pipeline weakens, affecting the BOP's blowout prevention counterweight effect, and in severe cases, even causing safety accidents. Therefore, how to strengthen the connection between the threaded rod and the threaded sleeve to improve the stability and reliability of well-controlled BOP bases has become an urgent problem to be solved. Summary of the Invention

[0004] The purpose of this invention is to provide a well control blowout prevention base for dual-purpose oil and gas wells to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a well control blowout preventer base for dual-purpose oil and gas wells, comprising a base body, with supporting bases fixed at the four corners of the base body's bottom surface, a connecting plate fixed to the bottom surface of the base body, two hoop plates installed at the bottom of each end of the connecting plate, two screw rods inserted into the ends of the two hoop plates, the top ends of the screw rods penetrating the connecting plate, and a threaded sleeve fitted onto the top end of the screw rods, the bottom end of the threaded sleeve being fixed to the top surface of the connecting plate, multiple clamping blocks inserted into the surface of the threaded sleeve, and a push ring fitted onto the top end of the threaded sleeve, the push ring pushing the multiple clamping blocks to clamp the screw rods.

[0006] Preferably, the length of the connecting plate is greater than the length of the bottom side of the foundation pier body, and two reinforcing plates are fixed at both ends of the top surface of the connecting plate, with one side of the reinforcing plate fixed to the surface of the foundation pier body.

[0007] Preferably, a rubber pad is fixed to the inner ring surface of the hoop plate, and a through hole is provided at both ends of the hoop plate. A through hole corresponding to the through hole is provided on the surface of the connecting plate. The screw passes through the through hole and the through hole and is fitted with a screw thread sleeve.

[0008] Preferably, the top surface of the threaded sleeve is provided with a reserved groove, the inner ring surface of the threaded sleeve is provided with an annular embedded groove, and multiple insertion holes are provided between the embedded groove and the reserved groove. The insertion holes and clamping blocks correspond one-to-one, and the clamping blocks are inserted into the insertion holes.

[0009] Preferably, the height of the recessed groove is greater than the height of the insertion hole, a rubber ring is fixed on the outer ring surface of the recessed groove, one end of the clamping block is fixed on the outer ring surface of the rubber ring, the other end of the clamping block has an inclined surface on the top surface, the width of the clamping block is greater than the depth of the insertion hole, after the push ring pushes the clamping block, the clamping block retracts into the insertion hole, and the clamping block tightly clamps the rubber ring on the surface of the screw.

[0010] Preferably, the outer ring surface of the push ring is provided with multiple anti-slip grooves, the inner ring surface of the push ring is provided with internal threads, and the surface of the reserved groove is provided with external threads, with the external threads and internal threads engaging and connecting.

[0011] Preferably, the bottom surface of the push ring is provided with a slot, which is an annular groove with a circular opening. An insert ring is fixed to the bottom surface of the reserved groove, and a rubber collar is fixed to the top of the insert ring. The rubber collar has a circular ring structure with a circular cross-section. When the bottom surface of the push ring falls to the bottom surface of the reserved groove, both the insert ring and the rubber collar are inserted into the slot, and the cross-section of the insert ring is greater than the width of the slot opening.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The present invention proposes a dual-purpose well control blowout preventer for oil and gas wells. Multiple clamping blocks are inserted into the surface of the threaded sleeve, and a push ring is used to push and clamp the screw. After the screw and threaded sleeve are screwed and locked, the push ring is screwed downwards. The push ring pushes the clamping block along the inclined surface of the top of the clamping block into the insertion hole, causing the clamping block to tightly clamp the rubber ring onto the surface of the screw. This increases the friction between the screw and the threaded sleeve, effectively preventing loosening during use and improving the stability and reliability of the connection between the well support and the oil and gas pipeline.

[0014] A groove is made on the bottom surface of the push ring, and an insert ring is fixed to the bottom surface of the pre-reserved groove. A fixing rubber collar is fitted onto the top of the insert ring. When the bottom surface of the push ring falls to the bottom surface of the pre-reserved groove, both the insert ring and the rubber collar are inserted into the groove, and the cross-sectional diameter of the insert ring is larger than the width of the groove opening, so that the bottom of the push ring and the bottom surface of the pre-reserved groove form an elastic locking position. This design avoids the push ring from loosening on the threaded sleeve, ensures the stable clamping of the push ring on the clamping block, and thus ensures the stable clamping of the clamping block on the rubber ring. It further increases the friction between the screw and the threaded sleeve, and improves the stability of the entire connection structure. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 for Figure 1 Sectional view of the structure at point AA;

[0017] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0018] Figure 4 This is a schematic diagram of the connection structure between the connecting plate and the hoop plate of the present invention;

[0019] Figure 5 This is a schematic diagram of the wire sleeve structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the push ring structure of the present invention.

[0021] In the figure: 1. Pier body, 101. Support base, 2. Connecting plate, 201. Reinforcing plate, 202. Hoop plate, 3. 301. 302. 4. Screw, 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 5. 6. 5. 7. 8. 5. 8. 8. 8. 9. 9. 9. 9. 9. 9. 9. 9. 10. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 6 This invention provides a technical solution: a well control blowout preventer base for dual-purpose oil and gas wells, comprising a base body 1, with supporting bases 101 fixed at each of the four corners of the base body 1. A connecting plate 2 is fixed to the bottom surface of the base body 1, and two hoop plates 3 are installed at both ends of the connecting plate 2. Two screw rods 4 are inserted into the ends of the two hoop plates 3, with the top ends of the screw rods 4 penetrating the connecting plate 2 and threaded sleeves 5 screwed onto the top ends of the screw rods 4. The bottom ends of the threaded sleeves 5 are fixed to the connecting plate 2. The top surface of the connecting plate 2 has a plate length greater than the length of the bottom side of the foundation body 1. Two reinforcing plates 201 are fixed at both ends of the top surface of the connecting plate 2. One side of the reinforcing plate 201 is fixed to the surface of the foundation body 1. A rubber pad 302 is fixed on the inner ring surface of the hoop plate 3. Both ends of the hoop plate 3 are provided with a through hole 301. The surface of the connecting plate 2 is provided with a through hole 202 corresponding to the through hole 301. The screw 4 passes through the through hole 202 and the through hole 301 and is fitted with a screw thread sleeve 5.

[0024] Place the foundation pier body 1 on site, then fasten the two clamp plates 3 on both sides of the oil and gas pipeline. Then, pass the screw 4 through the perforation 301 on the surface of the two clamp plates 3, and screw the top of the screw 4 through the reinforcing plate 201 into the threaded sleeve 5. Continue to screw the threaded sleeve 5 until the two clamp plates 3 tightly clamp the oil and gas pipeline, and the top clamp plate 3 is clamped under the connecting plate 2. At this time, the foundation pier body 1 presses on the oil and gas pipeline to achieve a counterweight for venting. A rubber gasket is fitted on the screw 4. When the threaded sleeve 5 and the screw 4 are locked, the rubber gasket is deformed under pressure and rebounds, so that the threaded sleeve 5 and the screw 4 are firmly screwed together.

[0025] To strengthen the connection between screw 4 and threaded sleeve 5, the following was proposed:

[0026] Multiple clamping blocks 7 are inserted into the surface of the threaded sleeve 5, and a push ring 8 is fitted onto the top of the threaded sleeve 5. The push ring 8 pushes the multiple clamping blocks 7 to clamp the screw 4. A reserved groove 501 is opened on the top surface of the threaded sleeve 5, and an annular embedded groove 502 is opened on the inner ring surface of the threaded sleeve 5. Multiple insertion holes 503 are opened between the embedded groove 502 and the reserved groove 501. The insertion holes 503 correspond one-to-one with the clamping blocks 7, and the clamping blocks 7 are inserted into the insertion holes 503. The height of the embedded groove 502 is greater than the height of the insertion holes 503. A rubber ring 6 is fixed to the outer ring surface of the screw 4. One end of the clamping block 7 is fixed to the outer ring surface of the rubber ring 6. The other end of the clamping block 7 has an inclined surface on the top surface. The width of the clamping block 7 is greater than the depth of the insertion hole 503. After the push ring 8 pushes the clamping block 7, the clamping block 7 retracts into the insertion hole 503, and the clamping block 7 tightly clamps the rubber ring 6 to the surface of the screw 4. The outer ring surface of the push ring 8 has multiple anti-slip grooves. The inner ring surface of the push ring 8 has internal threads. The surface of the reserved groove 501 has external threads. The external threads and internal threads are connected in a mating manner.

[0027] The inner groove 502 divides the thread of the inner ring of the threaded sleeve 5 into two ends. After the screw 4 and the threaded sleeve 5 are screwed and locked, the push ring 8 is placed on the top of the reserved groove 501 and the push ring 8 is screwed down. During the fall of the push ring 8, the push ring 8 pushes the clamping block 7 into the insertion hole 503 along the inclined surface. The clamping block 7 tightly clamps the rubber ring 6 on the surface of the screw 4, increasing the friction between the screw 4 and the threaded sleeve 5, thereby preventing the screw 4 and the threaded sleeve 5 from loosening.

[0028] To prevent the push ring 8 from becoming loose on the threaded sleeve 5, the following measures were proposed:

[0029] The bottom surface of the push ring 8 is provided with a slot 801, which is an annular groove with a round opening. The bottom surface of the reserved groove 501 is fixed with an insert ring 9, and the top of the insert ring 9 is fitted with a rubber collar 901. The rubber collar 901 is a circular structure with a round cross-section. When the bottom surface of the push ring 8 falls to the bottom surface of the reserved groove 501, both the insert ring 9 and the rubber collar 901 are inserted into the slot 801, and the cross-section of the insert ring 9 is greater than the width of the slot opening of the slot 801.

[0030] After the insertion ring 9 and the rubber collar 901 are inserted into the slot 801, the bottom of the push ring 8 and the bottom surface of the reserved slot 501 form an elastic locking position to prevent the push ring 8 from loosening, thereby ensuring that the push ring 8 stably clamps the clamping block 7, that is, satisfying the requirement that the clamping block 7 stably clamps the rubber ring 6, and increasing the friction between the screw 4 and the threaded sleeve 5.

[0031] Method for using well control blowout preventer bases for dual-purpose oil and gas wells:

[0032] The foundation pier 1 is placed in a suitable location at the oil and gas well site. Support bases 101 are fixed at all four corners of the foundation pier 1's bottom surface for stable support. A connecting plate 2 is fixed to the bottom surface of the foundation pier 1, its length exceeding the length of the long side of the foundation pier 1's bottom surface. Two reinforcing plates 201 are fixed to both ends of the top surface of the connecting plate 2, with one side of each reinforcing plate 201 fixed to the surface of the foundation pier 1. Two clamping plates 3 are fastened to both sides of the oil and gas pipeline. Rubber pads 302 are fixed to the inner circumference of the clamping plates 3 to increase friction with the oil and gas pipeline and provide protection. Both ends of the clamping plates 3 have through holes 301, and the surface of the connecting plate 2 has corresponding through holes 202. A screw 4 is passed through the through holes 301 on the surfaces of the two clamping plates 3 and the through holes 202 on the surface of the connecting plate 2, so that the top end of the screw 4 penetrates the connecting plate 2. The threaded sleeve 5 is fitted onto the top of the screw 4 and screwed in. The bottom end of the threaded sleeve 5 is fixed to the top surface of the connecting plate 2. The threaded sleeve 5 is continuously screwed in until the two clamping plates 3 tightly clamp the oil and gas pipeline, and the top clamping plate 3 is clamped below the connecting plate 2. At this time, the base body 1 presses on top of the oil and gas pipeline to achieve the release counterweight.

[0033] Multiple clamping blocks 7 are inserted into the surface of the threaded sleeve 5. A pre-drilled groove 501 is formed on the top surface of the threaded sleeve 5, and an annular recessed groove 502 is formed on the inner ring surface of the threaded sleeve 5. Multiple insertion holes 503 are formed between the recessed groove 502 and the pre-drilled groove 501. Each insertion hole 503 corresponds to one clamping block 7, and the clamping block 7 is inserted into the insertion hole 503. The height of the recessed groove 502 is greater than the height of the insertion hole 503. A rubber ring 6 is fixed to the outer ring surface of the recessed groove 502. One end of the clamping block 7 is fixed to the outer ring surface of the rubber ring 6, and the other end of the clamping block 7 has a bevel on its top surface. The width of the clamping block 7 is greater than the depth of the insertion hole 503. After the screw 4 and the threaded sleeve 5 are screwed and locked, the push ring 8 is fitted onto the top of the pre-drilled groove 501. Multiple anti-slip grooves are formed on the outer ring surface of the push ring 8 for easy operation; the inner ring surface of the push ring 8 has an internal thread, and the surface of the pre-drilled groove 501 has an external thread, with the external and internal threads engaging. Twist the push ring 8 downwards. As the push ring 8 falls, it pushes the clamping block 7 into the insertion hole 503 along the inclined surface of the top surface of the clamping block 7. The clamping block 7 tightly clamps the rubber ring 6 on the surface of the screw 4, increasing the friction between the screw 4 and the threaded sleeve 5, thereby preventing the screw 4 and the threaded sleeve 5 from loosening.

[0034] The bottom surface of the push ring 8 has a groove 801, which is an annular groove with a rounded cross-section. A retaining ring 9 is fixed to the bottom surface of the pre-reserved groove 501, and a rubber collar 901 is fitted and fixed to the top of the retaining ring 9. The rubber collar 901 is a circular ring structure with a rounded cross-section. When the bottom surface of the push ring 8 falls onto the bottom surface of the pre-reserved groove 501, both the retaining ring 9 and the rubber collar 901 are inserted into the groove 801, and the cross-sectional diameter of the retaining ring 9 is larger than the width of the groove opening of the groove 801. At this time, after the retaining ring 9 and the rubber collar 901 are inserted into the groove 801, an elastic locking mechanism is formed between the bottom of the push ring 8 and the bottom surface of the pre-reserved groove 501, preventing the push ring 8 from loosening. This ensures that the push ring 8 stably clamps the clamping block 7, which in turn satisfies the requirement for the clamping block 7 to stably clamp the rubber ring 6, further increasing the friction between the screw 4 and the threaded sleeve 5.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A well control blowout preventer base for dual-purpose oil and gas wells, comprising a base body (1), wherein a support base (101) is fixed at each of the four corners of the bottom surface of the base body (1), characterized in that: The bottom surface of the foundation pier body (1) is fixed with a connecting plate (2). Two hoop plates (3) are installed at both ends of the connecting plate (2). Two screw rods (4) are inserted into the two ends of the two hoop plates (3). The top of the screw rods (4) passes through the connecting plate (2), and a threaded sleeve (5) is screwed onto the top of the screw rods (4). The bottom end of the threaded sleeve (5) is fixed to the top surface of the connecting plate (2). Multiple clamping blocks (7) are inserted into the surface of the threaded sleeve (5), and a push ring (8) is fitted onto the top of the threaded sleeve (5). The push ring (8) pushes multiple clamping blocks (7) to clamp the screw (4); the top surface of the threaded sleeve (5) is provided with a reserved groove (501), and the inner ring surface of the threaded sleeve (5) is provided with an annular embedded groove (502). Multiple insertion holes (503) are provided between the embedded groove (502) and the reserved groove (501). The insertion holes (503) correspond one-to-one with the clamping blocks (7), and the clamping blocks (7) are inserted into the insertion holes (503); the height of the embedded groove (502) is greater than that of the insertion holes (503). The height of the groove (502) is such that a rubber ring (6) is fixed on the outer ring surface of the groove (502), one end of the clamping block (7) is fixed on the outer ring surface of the rubber ring (6), and the other end of the clamping block (7) has an inclined surface on the top surface. The width of the clamping block (7) is greater than the depth of the insertion hole (503). After the push ring (8) pushes the clamping block (7), the clamping block (7) retracts into the insertion hole (503), and the clamping block (7) tightly clamps the rubber ring (6) on the surface of the screw (4). The bottom surface of the push ring (8) has a slot (80). 1) The slot (801) is an annular groove with a round opening. The bottom surface of the reserved groove (501) is fixed with a ring (9). The top of the ring (9) is fitted with a rubber collar (901). The rubber collar (901) has a circular structure with a round cross-section. When the bottom surface of the push ring (8) falls to the bottom surface of the reserved groove (501), both the ring (9) and the rubber collar (901) are inserted into the slot (801), and the cross-section of the ring (9) is greater than the width of the slot (801).

2. The well control blowout prevention base for dual-purpose oil and gas wells according to claim 1, characterized in that: The length of the connecting plate (2) is greater than the length of the bottom side of the foundation body (1). Two reinforcing plates (201) are fixed at both ends of the top surface of the connecting plate (2). One side of the reinforcing plate (201) is fixed to the surface of the foundation body (1).

3. The well control blowout prevention base for dual-purpose oil and gas wells according to claim 1, characterized in that: The inner ring surface of the hoop (3) is fixed with a rubber pad (302). Both ends of the hoop (3) are provided with a through hole (301), and the surface of the connecting plate (2) is provided with a through hole (202) corresponding to the through hole (301). The screw (4) passes through the through hole (202) and the through hole (301) and is fitted with a screw thread sleeve (5).

4. The well control blowout prevention base for dual-purpose oil and gas wells according to claim 1, characterized in that: The outer ring surface of the push ring (8) is provided with multiple anti-slip grooves, the inner ring surface of the push ring (8) is provided with internal threads, and the surface of the reserved groove (501) is provided with external threads, and the external threads and internal threads are connected in a mating manner.

Images