Blowout prevention device for oil exploitation in oil field

Abstract

The utility model belongs to the technical field of oil field oil exploitation protection, and particularly relates to an oil field oil exploitation blowout prevention device which comprises an oil exploitation blowout prevention pipe, and an oil exploitation first-level blowout prevention assembly is installed on the side of the oil exploitation blowout prevention pipe. An oil exploitation first-level blowout prevention assembly is installed at the top end of the oil exploitation blowout prevention pipe, an oil exploitation second-level blowout prevention assembly is installed at the top end of the oil exploitation blowout prevention pipe, a blowout prevention device installation assembly is arranged at the bottom end of the oil exploitation blowout prevention pipe, an oil exploitation well pipe opening is formed in the bottom of the blowout prevention device installation assembly, and the oil exploitation first-level blowout prevention assembly comprises a fixed round block. The interior of the fixed round block is in threaded connection with a pushing bolt, and the end of the pushing bolt is fixedly connected with a rotating round piece. The double plugging structures are arranged, the plugging effect can be enhanced conveniently, the plugging structures can be closed and opened, normal mining work cannot be affected even if the plugging structures are installed at a wellhead, and the plugging structures can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field petroleum exploitation protection, in particular to an oil field petroleum exploitation anti-blowout device. Background Art

[0002] Since there are many uncertain factors in the formation and they are very complex, there is a possibility of blowout in every drilling operation, which puts higher requirements on well control technology and equipment. As the most important well control equipment, once an emergency such as overflow, well kick, or blowout occurs during drilling operations, the blowout preventer needs to be quickly activated to shut down the well. If the blowout preventer fails at this time, it will lead to serious accidents such as blowout. Therefore, the reasonable design of the blowout preventer plays an important role in ensuring the smooth progress of drilling operations and personal safety.

[0003] In Chinese Patent 202321927849.4, the utility model discloses an oilfield oil production blowout prevention device, comprising a fixed pipe, and a first connecting pipe rotatably connected to one side of the fixed pipe, the first connecting pipe is rotatably connected to a rotating pipe on a side away from the fixed pipe, and an end of the inner side of the rotating pipe away from the first connecting pipe is fixedly connected to a fixing ring, and a plurality of fixing bolts are plugged into the fixing ring, and the fixing bolts are in plurality and evenly distributed on the fixing ring; the beneficial effect is that the rotating pipe can be disassembled and assembled when necessary by slidingly connecting the first connecting pipe with the rotating pipe, a baffle with blocking material can be installed on the fixing ring installed inside the rotating pipe, and fixed by the fixing bolt, and the rotating pipe can be increased by increasing the number of first connecting pipes according to the depth of the oil well, and at the same time, the number of fixing rings inside the rotating pipe is increased, so that blowouts can be effectively blocked.

[0004] Some of the existing oilfield oil production blowout prevention devices cannot continue to perform protection work after one protection, and only have one layer of blocking structure. Once this structure is broken, the oil inside the oil production well may still spray out and cause leakage and pollution.

[0005] Therefore, in view of the above problems, a kind of oil field petroleum production anti-blowout device is proposed. Utility Model Content

[0006] In order to make up for the shortcomings of the existing technology, the problem of some existing oil field oil production blowout prevention devices being unable to continue the protection work after performing a protection once, and only having one layer of sealing structure, once this structure is broken, the oil inside the oil production well may still spray out and cause leakage pollution is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes an oil field oil production blowout prevention device, including an oil production blowout prevention pipe, the side of the oil production blowout prevention pipe is installed with an oil production first-level blowout prevention component, and the top of the oil production blowout prevention pipe is installed with an oil production second-level blowout prevention component, the bottom of the oil production blowout prevention pipe is provided with an anti-blowout device installation component, and the bottom of the blowout prevention device installation component is provided with an oil production well pipe opening, the oil production first-level blowout prevention component includes a fixed round block, the internal thread of the fixed round block is connected with a pushing bolt, and the end of the pushing bolt is fixedly connected with a rotating disc, and the outer rotation of the rotating disc is connected with a fixed ring, the side of the fixed ring is fixedly connected with a pushing block, and the other side of the pushing block is fixedly connected with an anti-blowout sealing ball, the other side of the anti-blowout sealing ball is provided with a sealing ball limit block, and the outer sliding connection of the anti-blowout sealing ball is connected with a sealing ball temporary storage tube.

[0008] Preferably, the pushing bolt forms a rotating structure through a rotating disc, a fixed ring and a pushing block, and the pushing block and a sealing ball temporary storage tube form a sliding structure, and the diameter of the anti-blowout sealing ball is consistent with the diameter of the oil production anti-blowout pipe.

[0009] Preferably, the secondary blowout prevention component for oil extraction includes a threaded joint, the external thread of the threaded joint is connected to a threaded sealing pipe mouth, and the bottom of the threaded sealing pipe mouth is fixedly connected to a fixed disc, and the outside of the threaded sealing pipe mouth is fixedly connected to a rotating handle, the bottom of the fixed disc is fixedly connected to a buffer spring, and the bottom end of the buffer spring is fixedly connected to a buffer disc.

[0010] Preferably, two rotating handles are symmetrically arranged about the vertical center axis of the threaded sealing pipe opening, and the threaded sealing pipe opening forms a threaded detachable structure with the oil production blowout prevention pipe through a threaded joint.

[0011] Preferably, the buffer disc forms an elastic structure with the fixed disc through a buffer spring, and the vertical center axis of the buffer disc is arranged to coincide with the vertical center axis of the oil production blowout prevention pipe.

[0012] Preferably, the blowout prevention device installation assembly includes a first connecting bayonet, the first connecting bayonet is internally snap-connected with a first anti-detachment snap ring, a second anti-detachment snap ring is provided at the bottom of the first anti-detachment snap ring, and the second connecting bayonet is tightly fitted on the side of the first connecting bayonet, the end of the first connecting bayonet is threadedly connected with a fixing bolt, and the external thread of the fixing bolt is connected with a fixing nut.

[0013] Preferably, the second connecting bayonet forms a snap-fit ​​structure with both the first anti-detachment clamp and the second anti-detachment clamp, and the first anti-detachment clamp is integrated with the oil production blowout prevention pipe, and the second anti-detachment clamp is integrated with the oil production well pipe mouth, the second connecting bayonet forms a detachable structure with the first connecting bayonet through a fixing bolt and a fixing nut, and the second connecting bayonet forms a snap-fit ​​structure with both the first anti-detachment clamp and the second anti-detachment clamp.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model is provided with a first-level anti-blowout assembly for oil production. When a blowout occurs, the push bolt can be turned to push the anti-blowout sealing ball forward through the push block and push it into the interior of the oil production anti-blowout pipe to seal the oil production anti-blowout pipe, thereby preventing the oil from spraying out from below. The anti-blowout sealing ball with a spherical design can be dispersed to the surroundings after the bottom is impacted, thereby enhancing its ability to resist the impact of oil blowouts. In addition, sealing ball limit blocks are provided above and below the anti-blowout sealing ball, thereby facilitating the anti-blowout sealing ball to be able to The blowout sealing ball is limited, and can be rotated in the opposite direction again after the blowout ends, so that the anti-blowout sealing ball can be retracted into the sealing ball temporary storage tube, so that the oil production anti-blowout pipe is still in a smooth state, and drilling work can still extend downward from the oil production anti-blowout pipe. The rotating disc can be used to make the push bolt and the push block rotatably connected. When the push bolt is rotated, the push block and the anti-blowout sealing ball can be rotated or not, which is convenient for weakening the resistance caused by the friction between the push block, the anti-blowout sealing ball and the sealing ball temporary storage tube when rotating;

[0016] 2. The utility model is provided with a secondary anti-blowout assembly for oil production, and a threaded sealing pipe opening is provided above the anti-blowout sealing ball, so as to facilitate the second anti-blocking of the oil production anti-blowout pipe, double protection, and facilitate the increase of the protection effect, and a buffer spring and a buffer disc are provided at the threaded sealing pipe opening, so as to facilitate the buffering and weaken the impact force on the threaded sealing pipe opening during the blowout;

[0017] 3. The utility model is provided with an anti-blowout device installation assembly, and the first connecting bayonet, the second connecting bayonet and the first anti-detachment clamp ring, the second anti-detachment clamp ring are mutually engaged and fixed, so that the anti-blowout device can be installed and fixed on the oil production well pipe mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model as a whole viewed from the front;

[0020] Figure 2 It is a three-dimensional structural diagram of the first-level anti-blowout component of the utility model for oil production;

[0021] Figure 3 It is a schematic diagram of the explosion structure of the push bolt part of the utility model;

[0022] Figure 4 This is a schematic diagram of the explosion structure of the secondary blowout prevention component of the utility model for oil production;

[0023] Figure 5 The utility model is a schematic diagram of the explosion structure of the installation component part of the anti-blowout device.

[0024] In the figure: 1. Oil production blowout prevention pipe; 2. Oil production first-level blowout prevention assembly; 3. Oil production second-level blowout prevention assembly; 4. Blowout prevention device installation assembly; 5. Oil production well pipe mouth; 201. Fixed round block; 202. Push bolt; 203. Rotating disc; 204. Fixed ring; 205. Push block; 206. Blowout prevention plugging ball; 207. Blocking ball limit block; 208. Temporary storage tube for plugging ball; 301. Threaded joint; 302. Threaded sealing pipe mouth; 303. Fixed disc; 304. Buffer spring; 305. Buffer disc; 306. Rotating handle; 401. First connecting bayonet; 402. First anti-dropping clamp; 403. Second anti-dropping clamp; 404. Second connecting bayonet; 405. Fixed bolt; 406. Fixed nut. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] like Figure 1As shown, an oil field oil production anti-blowout device comprises an oil production anti-blowout pipe 1, a first-level oil production anti-blowout assembly 2 is installed on the side of the oil production anti-blowout pipe 1, and a second-level oil production anti-blowout assembly 3 is installed on the top of the oil production anti-blowout pipe 1, a blowout prevention device installation assembly 4 is arranged at the bottom end of the oil production anti-blowout pipe 1, and an oil production well pipe opening 5 is arranged at the bottom of the blowout prevention device installation assembly 4.

[0028] like Figure 2 and Figure 3 As shown, an oilfield oil production anti-blowout device is used for the first layer of plugging protection for the oil wellhead. The push bolt 202 forms a rotating structure through the rotating disc 203, the fixed ring 204 and the push block 205, and the push block 205 and the plugging ball temporary storage tube 208 form a sliding structure. The diameter of the anti-blowout plugging ball 206 is consistent with the diameter of the oil production anti-blowout pipe 1. When a blowout occurs, it is only necessary to rotate the push bolt 202 to push the anti-blowout plugging ball 206 forward through the push block 205 and push it into the interior of the oil production anti-blowout pipe 1 to plug the oil production anti-blowout pipe 1, thereby preventing the oil from spraying out from below. The spherical anti-blowout plugging ball 206 can be dispersed to the surroundings after being impacted at its bottom, so as to enhance its anti-blowout effect on the oil well. The anti-blowout sealing ball 206 has the ability to withstand blowout impact, and sealing ball limit blocks 207 are arranged above and below the anti-blowout sealing ball 206, so as to limit the anti-blowout sealing ball 206, and it can be rotated in the opposite direction again after the blowout is over, so that the anti-blowout sealing ball 206 can be retracted into the interior of the sealing ball temporary storage tube 208, so that the oil production anti-blowout pipe 1 is still in a smooth state, and the drilling work can still extend downward from the oil production anti-blowout pipe 1. The rotating disc 203 can be used to make the pushing bolt 202 and the pushing block 205 rotatably connected. When the pushing bolt 202 is rotated, the pushing block 205 and the anti-blowout sealing ball 206 can be rotated or not, so as to weaken the resistance caused by the friction between the pushing block 205 and the anti-blowout sealing ball 206 and the sealing ball temporary storage tube 208 when they rotate.

[0029] like Figure 4As shown, an oil field oil production anti-blowout device, the oil production secondary anti-blowout component 3 includes a threaded joint 301, the external thread of the threaded joint 301 is connected to a threaded sealing pipe mouth 302, and the bottom of the threaded sealing pipe mouth 302 is fixedly connected to a fixed disc 303, and the outside of the threaded sealing pipe mouth 302 is fixedly connected to a rotating handle 306, the bottom of the fixed disc 303 is fixedly connected to a buffer spring 304, and the bottom end of the buffer spring 304 is fixedly connected to a buffer disc 305, and two rotating handles 306 are symmetrically arranged about the vertical center axis of the threaded sealing pipe mouth 302, and the threaded sealing pipe mouth 302 is connected to the threaded joint 301 through the threaded joint 301. 1 and the oil production blowout prevention pipe 1 form a threaded detachable structure, the buffer disc 305 and the fixed disc 303 form an elastic structure through the buffer spring 304, and the vertical center axis of the buffer disc 305 is arranged to coincide with the vertical center axis of the oil production blowout prevention pipe 1, and a threaded sealing pipe mouth 302 is arranged above the blowout prevention blocking ball 206, so that the oil production blowout prevention pipe 1 can be blocked for the second time, and the double protection can be increased, and the buffer spring 304 and the buffer disc 305 are arranged at the threaded sealing pipe mouth 302, so that buffering can be performed, and the impact force on the threaded sealing pipe mouth 302 during blowout is weakened.

[0030] like Figure 5 As shown, an anti-blowout device for oil field petroleum production, the anti-blowout device installation component 4 includes a first connecting bayonet 401, the first connecting bayonet 401 is internally engaged with a first anti-slipping clamp ring 402, and the bottom of the first anti-slipping clamp ring 402 is provided with a second anti-slipping clamp ring 403, and the side of the first connecting bayonet 401 is tightly fitted with a second connecting bayonet 404, the end of the first connecting bayonet 401 is threadedly connected with a fixing bolt 405, and the outer surface of the fixing bolt 405 is threadedly connected with a fixing nut 406, and the second connecting bayonet 404 and the first anti-slipping clamp ring 402 and the second anti-slipping clamp ring 403 all form a clamping structure, The first anti-slip clamp 402 is integrated with the oil production blowout prevention pipe 1, and the second anti-slip clamp 403 is integrated with the oil production well pipe mouth 5. The second connecting bayonet 404 forms a detachable structure with the first connecting bayonet 401 through a fixing bolt 405 and a fixing nut 406, and the second connecting bayonet 404 and the first anti-slip clamp 402 and the second anti-slip clamp 403 all form a clamping structure. The first connecting bayonet 401, the second connecting bayonet 404 and the first anti-slip clamp 402 and the second anti-slip clamp 403 are mutually clamped and fixed, so that the blowout prevention device can be installed and fixed on the oil production well pipe mouth 5.

[0031] Working principle: First, insert the connection port at the bottom end of the oil production blowout prevention pipe 1 into the inside of the oil production well pipe opening 5, and align the bottom end of the oil production blowout prevention pipe 1 with the end of the oil production well pipe opening 5, and clamp the first connection bayonet 401 and the second connection bayonet 404 on the outside of the first anti-detachment clamping ring 402 and the second anti-detachment clamping ring 403, then screw the screws into the ends of the two, and screw on the fixing bolts 405 to fix them, so that the blowout prevention device can be installed and fixed on the wellhead pipeline of the oil production well;

[0032] When a blowout occurs, the operator can promptly rotate the push bolt 202, and the end of the push bolt 202 can rotate inside the fixed ring 204 with the rotating disc 203. At the same time, since the push bolt 202 and the fixed block 201 are threadedly connected, when the push bolt 202 rotates, the end will push the push block 205 to move forward, and at the same time push the anti-blowout sealing ball 206 forward to make it push into the interior of the oil production anti-blowout pipe 1, just inside the sealing ball limit block 207, and then the oil production anti-blowout pipe 1 can be blocked, and then the buffer disc 305 is inserted into the interior of the oil production anti-blowout pipe 1, and the rotating handle 306 is turned to screw the threaded sealing pipe mouth 302 onto the outside of the threaded joint 301, so as to perform a second layer of anti-blocking on the oil production anti-blowout pipe 1.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An oilfield oil production blowout prevention device, characterized in that: It comprises an oil production blowout prevention pipe (1), wherein a first-level oil production blowout prevention assembly (2) is installed on the side of the oil production blowout prevention pipe (1), and a second-level oil production blowout prevention assembly (3) is installed on the top of the oil production blowout prevention pipe (1), a blowout prevention device installation assembly (4) is arranged at the bottom of the oil production blowout prevention pipe (1), and an oil production well pipe opening (5) is arranged at the bottom of the blowout prevention device installation assembly (4); The first-level anti-blowout assembly (2) for oil production comprises a fixed round block (201), the internal thread of the fixed round block (201) is connected to a pushing bolt (202), the end of the pushing bolt (202) is fixedly connected to a rotating disc (203), and the external rotation of the rotating disc (203) is connected to a fixed ring (204), the side of the fixed ring (204) is fixedly connected to a pushing block (205), and the other side of the pushing block (205) is fixedly connected to an anti-blowout sealing ball (206), the other side of the anti-blowout sealing ball (206) is provided with a sealing ball limiting block (207), and the external sliding connection of the anti-blowout sealing ball (206) is connected to a sealing ball temporary storage tube (208).

2. The oilfield oil production blowout prevention device according to claim 1, characterized in that: The pushing bolt (202) forms a rotating structure through a rotating disc (203), a fixed ring (204) and a pushing block (205), and the pushing block (205) and a sealing ball temporary storage tube (208) form a sliding structure. The diameter of the anti-blowout sealing ball (206) is consistent with the diameter of the oil production anti-blowout pipe (1).

3. The oilfield oil production blowout prevention device according to claim 1, characterized in that: The oil production secondary blowout prevention assembly (3) comprises a threaded joint (301), the external thread of the threaded joint (301) is connected to a threaded sealing pipe mouth (302), the bottom of the threaded sealing pipe mouth (302) is fixedly connected to a fixed disc (303), the outside of the threaded sealing pipe mouth (302) is fixedly connected to a rotating handle (306), the bottom of the fixed disc (303) is fixedly connected to a buffer spring (304), and the bottom end of the buffer spring (304) is fixedly connected to a buffer disc (305).

4. The oilfield oil production blowout prevention device according to claim 3, characterized in that: Two rotating handles (306) are symmetrically arranged about the vertical center axis of the threaded sealing pipe opening (302), and the threaded sealing pipe opening (302) forms a threaded detachable structure with the oil production blowout prevention pipe (1) through a threaded joint (301).

5. The oilfield oil production blowout prevention device according to claim 3, characterized in that: The buffer disc (305) forms an elastic structure with the fixed disc (303) through the buffer spring (304), and the vertical center axis of the buffer disc (305) is arranged to coincide with the vertical center axis of the oil production blowout prevention pipe (1).

6. The oilfield oil production blowout prevention device according to claim 1, characterized in that: The blowout prevention device installation assembly (4) comprises a first connection bayonet (401), the first connection bayonet (401) is internally engaged with a first anti-slip ring (402), a second anti-slip ring (403) is provided at the bottom of the first anti-slip ring (402), and the side of the first connection bayonet (401) is tightly fitted with the second connection bayonet (404), the end of the first connection bayonet (401) is threadedly connected with a fixing bolt (405), and the outer surface of the fixing bolt (405) is threadedly connected with a fixing nut (406).

7. The oilfield oil production blowout prevention device according to claim 6, characterized in that: The second connection bayonet (404) and the first anti-slip clamp (402) and the second anti-slip clamp (403) all form a snap-fit ​​structure, and the first anti-slip clamp (402) and the oil production blowout prevention pipe (1) are integrated, and the second anti-slip clamp (403) and the oil production well pipe opening (5) are integrated, the second connection bayonet (404) and the first connection bayonet (401) form a detachable structure through a fixing bolt (405) and a fixing nut (406), and the second connection bayonet (404) and the first anti-slip clamp (402) and the second anti-slip clamp (403) all form a snap-fit ​​structure.

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