Blowout prevention and wax scraping device for oil drilling and producing well

Abstract

The utility model provides an oil drilling and producing well blowout prevention wax scraping device, which relates to the field of oil drilling and production, and comprises a base, a wax scraping assembly is arranged at the top of the base, a recovery assembly is arranged on one side of the wax scraping assembly, a sealing assembly is arranged on one side of the wax scraping assembly, and a reinforcing assembly is arranged on one side of the wax scraping assembly. Through the arrangement of the paraffin scraping assembly, the recovery assembly and the sealing assembly, a paraffin scraping cover is installed on the top of the extending pipeline and fixed through a fixing bolt during use, and when the oil pumping pipe pumps back, oil attached to the oil pumping pipe can be scraped by a scraper and accumulated in a circular ring groove; meanwhile, the semi-sealing valve plate blowout preventer can prevent an oil well from eruption, oil accumulated in the circular ring groove is transported and recycled in the recycling pipeline through the oil well pump, the purpose of recycling the oil is achieved, and meanwhile the sealing performance of the paraffin scraping cover can be improved through the sealing ring and the sealing groove.

Description

Technical Field

[0001] The utility model relates to the field of oil drilling and production, and particularly to an oil well blowout prevention and wax scraping device for oil drilling and production. Background Art

[0002] The oil well blowout prevention and wax scraping device for oil drilling and production is usually designed to avoid the jetting problems that may occur during drilling operations, especially important when drilling high-pressure and high-temperature oil and gas wells. During the maintenance, well flushing and other operations of oilfield operation wells, generally, the blowout prevention device on the oil production machinery is first removed, and then the sucker rod is extracted with the derrick hook. However, during this process, there is no complete sucker rod wax scraping machine, resulting in a lot of residual crude oil hanging on the extracted sucker rod during the operation, causing a large amount of waste of crude oil.

[0003] After retrieval, in the prior art, the Chinese patent with the patent publication number CN212508187U discloses "a self-sealing wellhead blowout preventer wax scraping device. This utility model has a compact structure and ingenious concept. The wax scraping rubber core is installed in the blowout preventer. The first annular protrusion is stuck into the annular groove on the connecting flange surface of the ring, and the second annular protrusion can more effectively seal the annular space between the drill string and the blowout preventer during the flushing and rotating operation, preventing the well fluid from overflowing during the closed circulation process and causing personal injury or on-site pollution; the sealing ring has a sealing function. During the process of lifting the pipe string during the flushing and rotating operation, through the interference fit between the self-sealing wellhead blowout preventer wax scraping device and the outer wall of the drill string, the efficient cleaning of the dirt on the outer wall surface of the drill string can be realized, significantly improving the overall operation efficiency. The structure is simple, the installation is convenient, and the space is saved", but there are still the following defects:

[0004] (1) During the actual use process, the oil liquid attached to the sucker rod cannot be collected, resulting in a large amount of resource waste and polluting the surrounding environment at the same time;

[0005] (2) During the actual use process, the safety performance is relatively low. One blowout preventer cannot prevent large-scale oil well eruptions, and at the same time, the fixing effect of the wax scraping cover is poor, unable to ensure the safety of the staff.

[0006] Therefore, we make improvements on this and propose an oil well blowout prevention and wax scraping device for oil drilling and production. Content of the Utility Model

[0007] The purpose of the utility model is to solve the problems existing currently, that is, the oil liquid attached to the sucker rod cannot be collected, resulting in a large amount of resource waste and polluting the surrounding environment at the same time, the safety performance is relatively low, one blowout preventer cannot prevent large-scale oil well eruptions, and at the same time, the fixing effect of the wax scraping cover is poor, unable to ensure the safety of the staff.

[0008] To achieve the above-mentioned utility model purpose, the present utility model provides the following technical solutions:

[0009] An oil well blowout prevention and wax scraping device for oil drilling and production to improve the above problems.

[0010] The present utility model is specifically as follows:

[0011] It includes a base, a wax scraping component is arranged on the top of the base, a recovery component is arranged on one side of the wax scraping component, a sealing component is arranged on one side of the wax scraping component, and a reinforcement component is arranged on one side of the wax scraping component;

[0012] The wax scraping component includes an extension pipe, a semi-closed valve plate blowout preventer, a tubing string, a mounting ring, a wax scraping cover, fixing bolts, a circular ring groove and a scraper. The extension pipe is fixedly connected to the top of the base. The semi-closed valve plate blowout preventer is arranged on one side of the extension pipe. The tubing string is arranged inside the extension pipe and is connected to an external tubing string. The mounting ring is fixedly connected to the top of the extension pipe. The wax scraping cover is threadedly connected to one side of the mounting ring and is inserted into the extension pipe. A plurality of the fixing bolts are bolted between the wax scraping cover and the mounting ring. A plurality of the circular ring grooves are opened on one side of the wax scraping cover. The scraper is arranged inside the circular ring groove.

[0013] As a preferred technical solution of the present utility model, the recovery component includes a recovery tank, a recovery pipe and an oil extraction pump. The recovery tank is opened between a plurality of circular ring grooves. One end of the recovery pipe is arranged inside the recovery pipe and the other end extends to the outside of the wax scraping cover. The oil extraction pump is arranged on the top of the wax scraping cover and is used in cooperation with the recovery pipe.

[0014] As a preferred technical solution of the present utility model, the sealing component includes a sealing ring and a sealing groove. The sealing ring is fixedly connected to the bottom of the wax scraping cover. The sealing groove is opened on the top of the mounting ring and is used in cooperation with the sealing ring for insertion.

[0015] As a preferred technical solution of the present utility model, the reinforcement component includes a reinforcement ring groove and a reinforcement ring plate. The reinforcement ring groove is opened on one side of the wax scraping cover. The reinforcement ring plate is slidably connected to one side of the extension pipe and one end is threadedly connected to the inside of the reinforcement ring groove. The shape of the reinforcement ring plate is L-shaped.

[0016] As a preferred technical solution of the present utility model, a stabilizing groove is opened at the bottom of the mounting ring. A stabilizing ring is fixedly connected to one side of the reinforcement ring plate. The stabilizing ring is slidably connected to the inside of the stabilizing groove.

[0017] As a preferred technical solution of the present utility model, a shear valve plate blowout preventer is arranged on one side of the extension pipe. The shear valve plate blowout preventer is used to assist the semi-closed valve plate blowout preventer in use.

[0018] As a preferred technical solution of the present utility model, a full-closed valve plate blowout preventer is provided on one side of the extension pipeline, and the full-closed valve plate blowout preventer is used to assist the shear valve plate blowout preventer in use.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] In the solution of the present utility model:

[0021] 1. By providing a wax scraping assembly, a recovery assembly and a sealing assembly, when in use, the wax scraping cover is installed on the top of the extension pipeline and fixed by fixing bolts. When the sucker rod is withdrawn, the oil liquid attached to the sucker rod will be scraped off by the scraper and accumulated inside the circular ring groove. At the same time, the half-closed valve plate blowout preventer can prevent the oil well from erupting. Meanwhile, the oil liquid accumulated inside the circular ring groove is transported and recovered inside the recovery pipeline by the oil pump, achieving the purpose of recovering the oil liquid. At the same time, the sealing ring and the sealing groove can improve the sealing performance of the wax scraping cover;

[0022] 2. By providing a reinforcement assembly, a stabilizing groove, a stabilizing ring, a shear valve plate blowout preventer and a full-closed valve plate blowout preventer, when in use, after the wax scraping cover is installed, rotate the reinforcement ring plate to drive the reinforcement ring plate to be threadedly connected to the inside of the reinforcement ring groove, thereby improving the fixing effect of the wax scraping cover and inserting the stabilizing ring into the stabilizing groove to improve the stability of the reinforcement ring plate. The shear valve plate blowout preventer can directly shear and seal the sucker rod when the oil well erupts, improving the use effect of the half-closed valve plate blowout preventer. The full-closed valve plate blowout preventer can further seal the oil well in multiple layers, improving the use effect of the half-closed valve plate blowout preventer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of an oil well blowout prevention and wax scraping device provided by the present utility model;

[0024] Figure 2 is a right view of an oil well blowout prevention and wax scraping device provided by the present utility model;

[0025] Figure 3 is an oil well blowout prevention and wax scraping device provided by the present utility model Figure 2 is a schematic three-dimensional sectional structural diagram at A-A of the oil well blowout prevention and wax scraping device provided by the present utility model;

[0026] Figure 4 is an oil well blowout prevention and wax scraping device provided by the present utility model Figure 3 is a schematic partial structural diagram of the oil well blowout prevention and wax scraping device provided by the present utility model;

[0027] Figure 5 is an oil well blowout prevention and wax scraping device provided by the present utility model Figure 3 is a schematic partial structural diagram of the oil well blowout prevention and wax scraping device provided by the present utility model.

[0028] Indications in the figure:

[0029] 1. Base; 2. Wax scraping assembly; 3. Recovery assembly; 4. Sealing assembly; 5. Reinforcement assembly; 201. Extension pipe; 202. Half - closed valve plate blowout preventer; 203. Production tubing; 204. Installation ring; 205. Wax scraping cover; 206. Fixed bolt; 207. Circular ring groove; 208. Scraper; 301. Recovery tank; 302. Recovery pipe; 303. Oil extraction pump; 401. Sealing ring; 402. Sealing groove; 501. Reinforcement ring groove; 502. Reinforcement ring plate; 6. Stabilizing groove; 7. Stabilizing ring; 8. Shearing valve plate blowout preventer; 9. Full - closed valve plate blowout preventer. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0031] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0032] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] As Figures 1-5 shown, this embodiment provides an oil well blowout prevention and wax scraping device for oil drilling and production, including a base 1. A wax scraping assembly 2 is arranged on the top of the base 1. A recovery assembly 3 is arranged on one side of the wax scraping assembly 2. A sealing assembly 4 is arranged on one side of the wax scraping assembly 2. A reinforcement assembly 5 is arranged on one side of the wax scraping assembly 2;

[0035] The wax scraping assembly 2 includes an extension pipe 201, a half-closed valve plate blowout preventer 202, a sucker rod 203, a mounting ring 204, a wax scraping cover 205, fixing bolts 206, a circular ring groove 207, and a scraper 208. The extension pipe 201 is fixedly connected to the top of the base 1. The half-closed valve plate blowout preventer 202 is arranged on one side of the extension pipe 201. The sucker rod 203 is arranged inside the extension pipe 201 and is connected to the external sucker rod 203. The mounting ring 204 is fixedly connected to the top of the extension pipe 201. The wax scraping cover 205 is threadedly connected to one side of the mounting ring 204 and is inserted into the extension pipe 201. A plurality of fixing bolts 206 are bolted between the wax scraping cover 205 and the mounting ring 204. A plurality of circular ring grooves 207 are opened on one side of the wax scraping cover 205. The scraper 208 is arranged inside the circular ring groove 207. When in use, the wax scraping cover 205 is installed on the top of the extension pipe 201 and fixed by the fixing bolts 206. When the sucker rod 203 is retracted, the oil adhered to the sucker rod 203 will be scraped off by the scraper 208 and accumulated inside the circular ring groove 207. At the same time, the half-closed valve plate blowout preventer 202 can prevent the oil well from erupting and can scrape off the oil.

[0036] As Figure 4 shown, as a preferred embodiment, on the basis of the above method, further, the recovery assembly 3 includes a recovery tank 301, a recovery pipe 302, and an oil pump 303. The recovery tank 301 is opened between a plurality of circular ring grooves 207. One end of the recovery pipe 302 is arranged inside the recovery pipe 302 and the other end extends to the outside of the wax scraping cover 205. The oil pump 303 is arranged on the top of the wax scraping cover 205 and is used in cooperation with the recovery pipe 302. When in use, the oil accumulated inside the circular ring groove 207 is transported and recovered inside the recovery pipe 302 by the oil pump 303, achieving the purpose of recovering the oil.

[0037] As Figure 5 shown, as a preferred embodiment, on the basis of the above method, further, the sealing assembly 4 includes a sealing ring 401 and a sealing groove 402. The sealing ring 401 is fixedly connected to the bottom of the wax scraping cover 205. The sealing groove 402 is opened on the top of the mounting ring 204 and is used in cooperation with the sealing ring 401 for insertion. When in use, the sealing ring 401 and the sealing groove 402 can improve the sealing performance of the wax scraping cover 205.

[0038] As Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the reinforcement component 5 includes a reinforcement ring groove 501 and a reinforcement ring plate 502. The reinforcement ring groove 501 is opened on one side of the wax scraping cover 205. The reinforcement ring plate 502 is slidably connected to one side of the extension pipe 201 and one end is threadedly connected to the inside of the reinforcement ring groove 501. The shape of the reinforcement ring plate 502 is L-shaped. When in use, after the wax scraping cover 205 is installed, the reinforcement ring plate 502 is rotated to drive the reinforcement ring plate 502 to be threadedly connected to the inside of the reinforcement ring groove 501, thereby improving the fixing effect of the wax scraping cover 205.

[0039] As Figure 5 shown, as a preferred embodiment, on the basis of the above method, further, a stable groove 6 is opened at the bottom of the mounting ring 204. One side of the reinforcement ring plate 502 is fixedly connected to a stable ring 7. The stable ring 7 is slidably connected to the inside of the stable groove 6. When in use, the stable ring 7 is inserted into the inside of the stable groove 6, which can improve the stability of the reinforcement ring plate 502.

[0040] As Figure 3 shown, as a preferred embodiment, on the basis of the above method, further, a shear valve plate blowout preventer 8 is provided on one side of the extension pipe 201. The shear valve plate blowout preventer 8 is used to assist the use of the half-closed valve plate blowout preventer 202. When in use, the shear valve plate blowout preventer 8 can directly shear and seal the sucker rod pipe 203 during an oil well blowout, improving the use effect of the half-closed valve plate blowout preventer 202.

[0041] As Figure 3 shown, as a preferred embodiment, on the basis of the above method, further, a full-closed valve plate blowout preventer 9 is provided on one side of the extension pipe 201. The full-closed valve plate blowout preventer 9 is used to assist the use of the shear valve plate blowout preventer 8. When in use, the full-closed valve plate blowout preventer 9 can seal the oil well in multiple layers again, improving the use effect of the half-closed valve plate blowout preventer 202.

[0042] Specifically, when the oil well blowout prevention and wax scraping device for oil drilling and production is in use: Install the wax scraping cover 205 on the top of the extension pipe 201 and fix it with the fixing bolt 206. When the sucker rod 203 is withdrawn, the oil attached to the sucker rod 203 will be scraped off by the scraper 208 and accumulate inside the circular ring groove 207. At the same time, the half-closed valve plate blowout preventer 202 can prevent the oil well from erupting. Meanwhile, the oil accumulated inside the circular ring groove 207 is transported and recovered inside the recovery pipe 302 by the oil pump 303, achieving the purpose of oil recovery. At the same time, the sealing ring 401 and the sealing groove 402 can improve the sealing performance of the wax scraping cover 205. After the wax scraping cover 205 is installed, rotate the reinforcement ring plate 502 to drive the reinforcement ring plate 502 to be threadedly connected to the inside of the reinforcement ring groove 501, thereby improving the fixing effect of the wax scraping cover 205, and inserting the stabilizing ring 7 into the stabilizing groove 6 to improve the stability of the reinforcement ring plate 502. The shear valve plate blowout preventer 8 can directly shear and seal the sucker rod 203 when the oil well erupts, improving the use effect of the half-closed valve plate blowout preventer 202. The full-closed valve plate blowout preventer 9 can further seal the oil well in multiple layers, improving the use effect of the half-closed valve plate blowout preventer 202.

[0043] All the technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiments are the preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A wax scraping device for preventing oil well blowout in oil drilling and production, comprising a base (1), characterized in that: A wax scraping assembly (2) is arranged on the top of the base (1), a recovery assembly (3) is arranged on one side of the wax scraping assembly (2), a sealing assembly (4) is arranged on one side of the wax scraping assembly (2), and a reinforcement assembly (5) is arranged on one side of the wax scraping assembly (2); The wax scraping assembly (2) comprises an extension pipe (201), a semi-closed valve plate blowout preventer (202), an oil extraction pipe (203), a mounting ring (204), a wax scraping cover (205), a fixing bolt (206), a circular annular groove (207) and a scraper (208); the extension pipe (201) is fixedly connected to the top of the base (1); the semi-closed valve plate blowout preventer (202) is arranged on one side of the extension pipe (201); the oil extraction pipe (203) is arranged inside the extension pipe (201) and is connected to the outside The mounting ring (204) is fixedly connected to the top of the extension pipe (201); the wax scraper cover (205) is threadedly connected to one side of the mounting ring (204) and inserted into the interior of the extension pipe (201); a plurality of fixing bolts (206) are bolted between the wax scraper cover (205) and the mounting ring (204); a plurality of circular annular grooves (207) are opened on one side of the wax scraper cover (205); and the scraper plate (208) is arranged inside the circular annular groove (207).

2. A wax scraping device for preventing oil well blowout in oil drilling according to claim 1, characterized in that: The recovery component (3) comprises a recovery groove (301), a recovery pipe (302) and an oil pump (303); the recovery groove (301) is opened between a plurality of circular annular grooves (207); one end of the recovery pipe (302) is arranged inside the recovery pipe (302) and the other end extends to the outside of the wax scraping cover (205); the oil pump (303) is arranged on the top of the wax scraping cover (205) and is used in conjunction with the recovery pipe (302).

3. A wax scraping device for preventing oil well blowout in oil drilling according to claim 1, characterized in that: The sealing assembly (4) comprises a sealing ring (401) and a sealing groove (402); the sealing ring (401) is fixedly connected to the bottom of the wax scraper cover (205); the sealing groove (402) is opened at the top of the mounting ring (204) and is plugged in with the sealing ring (401) for use.

4. A wax scraping device for preventing oil well blowout in oil drilling according to claim 1, characterized in that: The reinforcement assembly (5) comprises a reinforcement ring groove (501) and a reinforcement ring plate (502); the reinforcement ring groove (501) is opened on one side of the wax scraper cover (205); the reinforcement ring plate (502) is slidably connected to one side of the extension pipe (201) and one end is threadedly connected to the inside of the reinforcement ring groove (501); the reinforcement ring plate (502) is L-shaped.

5. A wax scraping device for preventing oil well blowout in oil drilling according to claim 4, characterized in that: A stabilizing groove (6) is provided at the bottom of the mounting ring (204), a stabilizing ring (7) is fixedly connected to one side of the reinforcing ring plate (502), and the stabilizing ring (7) is slidably connected to the inside of the stabilizing groove (6).

6. A wax scraping device for preventing oil well blowout in oil drilling according to claim 1, characterized in that: A shear valve plate blowout preventer (8) is provided on one side of the extension pipeline (201), and the shear valve plate blowout preventer (8) is used to assist the semi-closed valve plate blowout preventer (202).

7. A wax scraping device for preventing oil well blowout in oil drilling according to claim 1, characterized in that: A fully enclosed valve plate blowout preventer (9) is provided on one side of the extension pipeline (201), and the fully enclosed valve plate blowout preventer (9) is used to assist the shear valve plate blowout preventer (8) in use.

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