High-efficiency petroleum drilling fluid circulating system

Abstract

The invention discloses a high-efficiency petroleum drilling fluid circulating system, and particularly relates to the technical field of petroleum exploitation equipment.The high-efficiency petroleum drilling fluid circulating system comprises a supporting frame, a treatment outer barrel is fixedly installed at the top of the supporting frame, a drainage pipe is fixedly installed at the bottom of the treatment outer barrel, and a treatment mechanism is rotationally arranged in the treatment outer barrel; a degassing mechanism is fixedly mounted at the bottom of the supporting frame, a gas guide mechanism is arranged between the treatment mechanism and the degassing mechanism, and a feeding pipe is arranged in the middle of the top end of the treatment mechanism; the treatment mechanism comprises a treatment outer frame, the treatment mechanism is rotatably mounted in the middle of the top end of the treatment outer cylinder through the top of the treatment outer frame, and a sewage discharge frame is fixedly mounted at the bottom end of the treatment outer frame. Centrifugal large-particle inner screening and small-particle outer filtering of the drilling fluid are synchronously achieved, the treatment efficiency of the drilling fluid is improved, and large particles of the inner screening and small particles of the outer filtering are independently discharged.

Description

Technical Field

[0001] The invention relates to the technical field of oil production equipment, in particular to a high-efficiency oil drilling fluid circulation system. Background Art

[0002] Drilling fluid is a fluid used in the process of oil and gas drilling, also known as drilling mud; its main functions include: cooling and lubrication, carrying cuttings, maintaining well wall stability, controlling underground pressure and providing geological information, etc. It can be divided into water-based drilling fluid, oil-based drilling fluid and bubble drilling fluid, etc.

[0003] When oil is being mined, the drilling fluid needs to be recycled. In the traditional process, the drilling fluid is first placed on a flow bed to remove cuttings, then placed in a degasser for degassing, then placed in a sedimentation cylinder for sedimentation, and finally placed in a separator to remove small particles and mud for recycling. The recycling process is relatively complicated, which affects the use of the drilling fluid. To this end, we propose a high-efficiency petroleum drilling fluid circulation system to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a high-efficiency petroleum drilling fluid circulation system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-efficiency petroleum drilling fluid circulation system, comprising a support frame, a treatment outer cylinder is fixedly installed on the top of the support frame, a discharge pipe is fixedly installed on the bottom of the treatment outer cylinder, a treatment mechanism is rotatably arranged in the treatment outer cylinder, a degassing mechanism is fixedly installed on the bottom of the support frame, a gas guide mechanism is arranged between the treatment mechanism and the degassing mechanism, and a feed pipe is arranged at the middle of the top of the treatment mechanism;

[0006] The processing mechanism comprises an outer processing frame, which is rotatably installed in the middle of the top end of the processing outer cylinder through the top of the processing outer frame, and a sewage discharge frame is fixedly installed at the bottom end of the processing outer frame, and an inner processing frame is arranged in the outer processing frame, and a first sewage discharge port is fixedly installed in the middle of the bottom end of the processing inner frame, and the outer side of the processing inner frame is fixedly clamped with two symmetrically distributed inner screen frames, and a feed port is opened in the middle of the top end of the inner screen frame, and a first sealing rotating member is fixedly installed on the top of the outer side of the processing inner frame, a transfer groove is opened in the processing outer frame, and a screening through groove corresponding to the inner screen frame is opened on the outer side of the processing outer frame, and a second sealing rotating member is fixedly installed on the top of the inner wall of the processing outer frame, and a bottom ring seat is movably clamped at the bottom of the transfer groove, and four mounting card frames distributed in a ring array are arranged at the top of the bottom ring seat, and the mounting card frames are movably clamped in the transfer groove, and outer filter elements are fixedly installed in the mounting card frames, and the outer filter elements are movably clamped in the transfer groove.

[0007] Preferably, the degassing mechanism includes a degassing outer cylinder, and the degassing mechanism is fixedly installed on the bottom of the support frame through the degassing outer cylinder, a liquid inlet pipe is fixedly installed in the middle of the top end of the degassing outer cylinder, the top end of the liquid inlet pipe and the bottom end of the discharge pipe are fixedly installed, a liquid outlet is fixedly installed in the middle of the bottom end of the degassing outer cylinder, a liquid control valve is fixedly installed at the bottom end of the liquid outlet, and the liquid outlet pipe is fixedly installed at the bottom end of the liquid control valve, an exhaust pipe and a liquid inlet pipe are fixedly installed at the top of the degassing outer cylinder, a rotating shaft is rotatably installed in the middle of the degassing outer cylinder, and a degassing rod is fixedly installed on the outside of the rotating shaft.

[0008] Preferably, the air guide mechanism includes an air guide ring tube and a U-shaped duct, the air guide ring tube is fixedly installed between the first sealing rotating member and the second sealing rotating member, the outer side of the air guide ring tube is integrally formed with an air guide port, one end of the U-shaped duct is fixedly clamped on the top of the processing outer tube, an exhaust main pipe is fixedly installed between one end of the air guide port away from the air guide ring tube and one end of the U-shaped duct away from the processing outer tube, and the bottom end of the exhaust main pipe and the top end of the exhaust pipe are fixedly installed.

[0009] Preferably, the feed pipe movably passes through the middle of the air guide ring cylinder, and the bottom of the feed pipe is fixedly installed in the feed port.

[0010] Preferably, the top of the installation card frame extends out of the top of the processing outer frame, and a mounting groove is formed on the top of the installation card frame.

[0011] Preferably, positioning columns are fixedly installed on both sides of the bottom end of the installation card frame, and the top of the bottom ring seat is provided with positioning grooves corresponding to the positioning columns, and the positioning columns are movably engaged in the corresponding positioning grooves.

[0012] Preferably, the bottom end of the sewage discharge frame is set as an inclined structure, a second sewage discharge port is fixedly installed on the outside of the bottom end of the sewage discharge frame, a second sewage discharge valve is fixedly installed on the bottom end of the second sewage discharge port, and a second sewage discharge pipe is fixedly installed on the bottom end of the second sewage discharge valve.

[0013] Preferably, a through groove is opened in the middle part of the bottom end of the sewage frame, the bottom end of the first sewage outlet is fixedly clamped in the through groove, the bottom end of the first sewage outlet extends out of the through groove and a first sewage valve is fixedly installed, the bottom end of the first sewage valve is fixedly installed with a first sewage pipe, the first sewage pipe is rotatably installed in the middle part of the bottom end of the treatment outer cylinder, the bottom of the first sewage pipe extends out of the bottom end of the treatment outer cylinder, and the middle part of the second sewage pipe extends into the first sewage pipe.

[0014] Preferably, the top of the processing outer frame extends out of the top of the processing outer cylinder, and a gear ring is fixedly installed on the top of the processing outer frame. A first rotating seat is fixedly installed on the top of the outer side of the processing outer cylinder, and a driving motor is fixedly installed on the bottom end of the first rotating seat. A driving gear is fixedly installed on the driving end of the driving motor, and the driving gear is meshingly connected with the outer side of the gear ring. Two symmetrically distributed second rotating seats are fixedly installed on the outer side of the processing outer cylinder, and an auxiliary shaft is rotatably installed on the end of the second rotating seat, and a transmission gear is fixedly installed on the top of the auxiliary shaft. The outer side of the transmission gear is meshingly connected with the outer side of the gear ring, and the bottom end of the auxiliary shaft is fixedly installed with the top of the rotating shaft.

[0015] Preferably, the petroleum drilling fluid circulation system includes a treatment system, the treatment system includes a primary internal screen treatment system and a secondary external filtration system, a degassing system is provided at the end of the treatment system, and an air guide system is provided between the primary internal screen treatment system, the secondary external filtration system and the degassing system.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By setting up a processing mechanism, the drilling fluid in the processing inner frame is driven to rotate centrifugally, and the centrifugal large particle inner screening and small particle outer filtration of the drilling fluid are simultaneously realized, so as to improve the processing efficiency of the drilling fluid, and the large particles in the inner screen and the small particles in the outer filtration are discharged separately.

[0018] 2. By setting up a degassing mechanism and using a gas guide mechanism in combination, the drilling fluid and the degassing agent are stirred and mixed, and the gas generated during the external filtration of small particles and the gas generated after the drilling fluid after the small particles are filtered out and impacted with the outer cylinder are discharged, and the drilling fluid is degassed synchronously, which further improves the circulation treatment efficiency of the drilling fluid.

[0019] 3. By setting up the processing mechanism, the installation card frame can be controlled to rotate in the indexing groove, so that another set of new outer filter elements correspond to the two inner screen frames, and the outer filter element that needs to be replaced is moved to the side. The outer filter element that needs to be replaced is lifted by the lifting equipment, and the outer filter element is quickly replaced, which improves the use effect of the entire oil drilling fluid circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the structural connection between the processing outer cylinder and the processing mechanism in the present invention.

[0023] Figure 3 It is a structural schematic diagram of the processing mechanism in the present invention.

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0025] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle.

[0026] Figure 6 It is a schematic diagram of the structure of the processing outer frame in the present invention.

[0027] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle.

[0028] Figure 8 For the present invention Figure 7 Enlarged view of point D in the middle.

[0029] Fig. 9 It is a structural schematic diagram of the degassing mechanism in the present invention.

[0030] Fig.10 It is a structural schematic diagram of the gas guide mechanism in the present invention.

[0031] In the figure: 1, support frame; 2, treatment outer cylinder; 21, discharge pipe; 3, treatment mechanism; 4, degassing mechanism; 5, air guide mechanism; 6, feed pipe; 7, gear ring; 31, treatment outer frame; 311, sewage frame; 312, through groove; 313, second sewage outlet; 314, first sewage valve; 315, second sewage valve; 32, first sewage pipe; 33, second sewage pipe; 34, treatment inner frame; 341, inner screen frame; 342, feed port; 35, first sealing rotating member; 36, second sealing rotating member; 301, indexing groove; 302, screening through groove; 37, bottom Ring seat; 38, mounting card frame; 381, outer filter element; 382, ​​mounting groove; 383, positioning column; 384, positioning groove; 41, degassing outer cylinder; 411, liquid inlet pipe; 412, liquid outlet; 413, liquid control valve; 414, liquid outlet pipe; 42, exhaust pipe; 43, feed pipe; 44, rotating shaft; 441, degassing rod; 51, air guide ring cylinder; 511, air guide port; 52, U-shaped duct; 53, exhaust main pipe; 71, second rotating seat; 72, auxiliary shaft; 73, transmission gear; 74, first rotating seat; 75, drive motor; 76, drive gear. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example: Figure 1-10 As shown, the present invention provides a high-efficiency petroleum drilling fluid circulation system, comprising a support frame 1, a processing outer cylinder 2 is fixedly installed on the top of the support frame 1, a drainage pipe 21 is fixedly installed on the bottom of the processing outer cylinder 2, a processing mechanism 3 is rotatably provided in the processing outer cylinder 2, a degassing mechanism 4 is fixedly installed on the bottom of the support frame 1, an air guide mechanism 5 is provided between the processing mechanism 3 and the degassing mechanism 4, and a feed pipe 6 is provided at the middle of the top of the processing mechanism 3;

[0034] The processing mechanism 3 includes a processing outer frame 31, which is rotatably installed in the middle of the top of the processing outer cylinder 2 through the top of the processing outer frame 31. The processing outer frame 31 is easy to rotate in the processing outer cylinder 2. A sewage discharge frame 311 is fixedly installed at the bottom of the processing outer frame 31. A processing inner frame 34 is provided in the processing outer frame 31. A first sewage discharge port is fixedly installed in the middle of the bottom end of the processing inner frame 34. Two symmetrically distributed inner screen frames 341 are fixedly provided on the outer side of the processing inner frame 34. A feed port 342 is opened in the middle of the top of the inner screen frame 341. The drilling fluid to be circulated and treated is introduced into the processing inner frame 34 through the feed port 342. The outer top of the processing inner frame 34 is fixedly installed A first sealing rotating member 35 is installed, a transfer groove 301 is opened in the processing outer frame 31, a screening groove 302 corresponding to the inner screen frame 341 is opened on the outer side of the processing outer frame 31, and a second sealing rotating member 36 is fixedly installed on the top of the inner wall of the processing outer frame 31, a bottom ring seat 37 is movably provided at the bottom of the transfer groove 301, and four mounting card frames 38 distributed in a circular array are provided on the top of the bottom ring seat 37, the mounting card frames 38 are movably connected in the transfer groove 301, and external filter cores 381 are fixedly installed in the mounting card frames 38, and the external filter cores 381 are movably connected in the transfer groove 301, and the two internal screen frames 341 and two of the external filter cores 381 correspond in position.

[0035] The top of the processing outer frame 31 extends out of the top of the processing outer cylinder 2, and a gear ring 7 is fixedly installed on the top of the processing outer frame 31. A first rotating seat 74 is fixedly installed on the outer top of the processing outer cylinder 2, and a driving motor 75 is fixedly installed on the bottom end of the first rotating seat 74. A driving end of the driving motor 75 is fixedly installed with a driving gear 76. The driving gear 76 is meshed with the outer side of the gear ring 7. The driving motor 75 is controlled to start and drive the driving gear 76 to drive the gear ring 7 to rotate, thereby controlling the processing outer frame 31 to rotate at a high speed, and then driving the processing inner frame 34 to rotate synchronously, and driving the drilling fluid in the processing inner frame 34 to rotate centrifugally. The drilling fluid first passes through two inner screen frames 341 for large particle internal screening, and the large particles are retained in the processing inner frame 34, and then passes through two outer filter elements 381 for small particle external filtering, and the small particles are retained in the processing outer frame 31, so as to realize the centrifugal large particle internal screening and small particle external filtering of the drilling fluid synchronously, thereby improving the processing efficiency of the drilling fluid.

[0036] The degassing mechanism 4 includes a degassing outer cylinder 41, and the degassing mechanism 4 is fixedly installed at the bottom of the support frame 1 through the degassing outer cylinder 41. A liquid inlet pipe 411 is fixedly installed in the middle of the top of the degassing outer cylinder 41. The top of the liquid inlet pipe 411 and the bottom of the discharge pipe 21 are fixedly installed. The drilling fluid after internal screening and external filtration is introduced into the degassing outer cylinder 41 through the discharge pipe 21 and the liquid inlet pipe 411. A liquid outlet 412 is fixedly installed in the middle of the bottom end of the degassing outer cylinder 41, and a liquid control valve 413 is fixedly installed at the bottom of the liquid outlet 412. The liquid control valve 413 controls the liquid. A liquid outlet pipe 414 is fixedly installed at the bottom end of the valve 413, an exhaust pipe 42 and an inlet pipe 43 are fixedly installed at the top end of the degassing outer cylinder 41, a rotating shaft 44 is rotatably installed in the middle part of the degassing outer cylinder 41, and a degassing rod 441 is fixedly installed on the outer side of the rotating shaft 44. Degassing agent is added to the degassing outer cylinder 41 through the inlet pipe 43, and the rotating shaft 44 is controlled to rotate, thereby driving the degassing rod 441 to rotate, so as to stir and mix the drilling fluid and the degassing agent, and the gas in the drilling fluid is discharged through the exhaust pipe 42.

[0037] The air guide mechanism 5 includes an air guide ring tube 51 and a U-shaped conduit 52. The air guide ring tube 51 is fixedly installed between the first sealing rotating member 35 and the second sealing rotating member 36. By setting the first sealing rotating member 35 and the second sealing rotating member 36, when the processing outer frame 31 and the processing inner frame 34 rotate, the sealing rotation between the processing outer frame 31, the processing inner frame 34 and the air guide ring tube 51 is not affected. When the drilling fluid is filtered for small particles, the generated gas is introduced into the air guide ring tube 51. The outer side of the air guide ring tube 51 is integrally formed with an air guide port 511. One end of the U-shaped conduit 52 is fixedly clamped on the top of the processing outer tube 2. An exhaust main pipe 53 is fixedly installed between the end of the port 511 away from the air guide ring tube 51 and the end of the U-shaped guide tube 52 away from the processing outer tube 2. The bottom end of the exhaust main pipe 53 and the top end of the exhaust pipe 42 are fixedly installed. The gas generated when small particles are filtered out is introduced into the air guide ring tube 51 and introduced into the exhaust main pipe 53 through the air guide port 511. The gas generated when the drilling fluid after small particles are filtered out hits the processing outer tube 2 is introduced into the exhaust main pipe 53 through the U-shaped guide tube 52. The gas in the drilling fluid is introduced into the exhaust main pipe 53 through the exhaust pipe 42, and the drilling fluid is degassing synchronously, which further improves the circulation treatment efficiency of the drilling fluid.

[0038] The feed pipe 6 movably passes through the middle of the air guide ring tube 51 , and the bottom of the feed pipe 6 is fixedly installed in the feed port 342 . The drilling fluid to be circulated and treated is introduced into the treatment inner frame 34 through the feed pipe 6 .

[0039] The top of the mounting card frame 38 extends out of the top of the processing outer frame 31, and a mounting groove 382 is provided on the top of the mounting card frame 38. After the outer filter element 381 has been filtered for a period of time, an external device is used to fix the corresponding mounting card frame 38 through the mounting groove 382, ​​and the mounting card frame 38 is controlled to rotate in the transfer groove 301, so that another set of new outer filter elements 381 correspond to the two inner screen frames 341, and the outer filter element 381 that needs to be replaced is moved to the side, and the outer filter element 381 that needs to be replaced is lifted by a lifting equipment, and the outer filter element 381 is quickly replaced, thereby improving the use effect of the entire oil drilling fluid circulation system.

[0040] Positioning posts 383 are fixedly installed on both sides of the bottom end of the installation card frame 38, and a positioning groove 384 corresponding to the positioning post 383 is opened on the top of the bottom ring seat 37. The positioning post 383 is movably connected in the corresponding positioning groove 384 to position and install the installation card frame 38, which is convenient for vertically moving the installation card frame 38 upward and disassembling the installation card frame 38.

[0041] The bottom end of the sewage frame 311 is set as an inclined structure, and a second sewage outlet 313 is fixedly installed on the outside of the bottom end of the sewage frame 311, and a second sewage valve 315 is fixedly installed on the bottom end of the second sewage outlet 313, and a second sewage pipe 33 is fixedly installed on the bottom end of the second sewage valve 315. By opening the second sewage valve 315, the small particles retained in the processing outer frame 31 are discharged separately through the second sewage outlet 313 and the second sewage pipe 33;

[0042] A through groove 312 is provided in the middle of the bottom end of the sewage frame 311, and the bottom end of the first sewage outlet is fixedly clamped in the through groove 312. The bottom end of the first sewage outlet extends out of the through groove 312 and is fixedly installed with a first sewage valve 314. The bottom end of the first sewage valve 314 is fixedly installed with a first sewage pipe 32. The first sewage pipe 32 is rotatably installed in the middle of the bottom end of the treatment outer cylinder 2. The bottom of the first sewage pipe 32 extends out of the bottom end of the treatment outer cylinder 2, and the middle part of the second sewage pipe 33 extends into the first sewage pipe 32. By opening the first sewage valve 314, the large particles retained in the treatment inner frame 34 are discharged separately through the first sewage outlet and the first sewage pipe 32.

[0043] Two symmetrically distributed second rotating seats 71 are fixedly installed on the outer side of the processing outer cylinder 2, and an auxiliary shaft 72 is rotatably installed on the end of the second rotating seat 71. A transmission gear 73 is fixedly installed on the top of the auxiliary shaft 72. The outer side of the transmission gear 73 is meshed with the outer side of the gear ring 7, and the bottom end of the auxiliary shaft 72 is fixedly installed with the top end of the rotating shaft 44. When the gear ring 7 rotates, the transmission gear 73 is controlled to rotate synchronously, thereby driving the auxiliary shaft 72 to rotate, thereby controlling the rotating shaft 44 to rotate synchronously.

[0044] The petroleum drilling fluid circulation system includes a treatment system, which includes a primary internal screening treatment system and a secondary external filtering system. A degassing system is provided at the end of the treatment system, and a gas guide system is provided between the primary internal screening treatment system, the secondary external filtering system and the degassing system.

[0045] Working principle: When in use, the driving motor 75 is controlled to drive the driving gear 76 to drive the gear ring 7 to rotate, thereby controlling the processing outer frame 31 to rotate at a high speed, and then driving the processing inner frame 34 to rotate synchronously. While the gear ring 7 rotates, the transmission gear 73 is controlled to rotate synchronously, and then the auxiliary shaft 72 is driven to rotate, thereby controlling the rotating shaft 44 to rotate synchronously;

[0046] The drilling fluid to be circulated and treated is introduced into the treatment inner frame 34 through the feed pipe 6. By controlling the synchronous rotation of the treatment outer frame 31 and the treatment inner frame 34, the drilling fluid in the treatment inner frame 34 is driven to rotate centrifugally. The drilling fluid first passes through the two inner screen frames 341 for large particle internal screening, and the large particles are retained in the treatment inner frame 34. Then, the drilling fluid passes through the two outer filter cores 381 for small particle external filtering, and the small particles are retained in the treatment outer frame 31, thereby realizing the centrifugal large particle internal screening and small particle external filtering of the drilling fluid simultaneously.

[0047] By opening the second drain valve 315, the small particles retained in the processing outer frame 31 are discharged separately through the second drain port 313 and the second drain pipe 33; by opening the first drain valve 314, the large particles retained in the processing inner frame 34 are discharged separately through the first drain port and the first drain pipe 32;

[0048] The drilling fluid after the inner screen and the outer filter is introduced into the degassing outer cylinder 41 through the discharge pipe 21 and the liquid inlet pipe 411, and the degassing agent is added into the degassing outer cylinder 41 through the agent inlet pipe 43, and the rotating shaft 44 is controlled to rotate, thereby driving the degassing rod 441 to rotate, stirring and mixing the drilling fluid and the degassing agent, and the gas in the drilling fluid is discharged through the exhaust pipe 42;

[0049] When the drilling fluid is subjected to small particle external filtration, the gas generated during the small particle external filtration is introduced into the gas guide ring 51 and introduced into the exhaust main pipe 53 through the gas guide port 511. The gas generated after the drilling fluid after small particle external filtration hits the treatment outer cylinder 2 is introduced into the exhaust main pipe 53 through the U-shaped guide tube 52. The gas in the drilling fluid is introduced into the exhaust main pipe 53 through the exhaust pipe 42, and the synchronous degassing operation of the drilling fluid is performed, which further improves the circulation treatment efficiency of the drilling fluid.

[0050] After the outer filter element 381 has been filtering for a period of time, an external device is used to fix the corresponding mounting card frame 38 through the mounting groove 382, ​​and the mounting card frame 38 is controlled to rotate in the transfer groove 301, so that another set of new outer filter elements 381 corresponds to the two inner screen frames 341, and the outer filter element 381 that needs to be replaced is moved to the side, and the outer filter element 381 that needs to be replaced is lifted up using a lifting equipment, and the outer filter element 381 is quickly replaced, thereby improving the use effect of the entire oil drilling fluid circulation system.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency petroleum drilling fluid circulation system, comprising a support frame (1), characterized in that: A treatment outer cylinder (2) is fixedly mounted on the top of the support frame (1), a discharge pipe (21) is fixedly mounted on the bottom of the treatment outer cylinder (2), a treatment mechanism (3) is rotatably mounted in the treatment outer cylinder (2), a degassing mechanism (4) is fixedly mounted on the bottom of the support frame (1), an air guide mechanism (5) is arranged between the treatment mechanism (3) and the degassing mechanism (4), and a feed pipe (6) is arranged at the middle of the top end of the treatment mechanism (3); The processing mechanism (3) comprises a processing outer frame (31), the processing mechanism (3) is rotatably mounted on the middle of the top end of the processing outer cylinder (2) through the top of the processing outer frame (31), a sewage discharge frame (311) is fixedly mounted on the bottom end of the processing outer frame (31), a processing inner frame (34) is provided in the processing outer frame (31), a first sewage discharge port is fixedly mounted on the middle of the bottom end of the processing inner frame (34), two symmetrically distributed inner screen frames (341) are fixedly mounted on the outer side of the processing inner frame (34), a feed port (342) is opened in the middle of the top end of the inner screen frame (341), and a first sealing rotating member (35) is fixedly mounted on the outer top of the processing inner frame (34). The processing outer frame (31) is provided with a transfer groove (301), and the outer side of the processing outer frame (31) is provided with a screening groove (302) corresponding to the inner screening frame (341). A second sealing rotating member (36) is fixedly installed on the top of the inner wall of the processing outer frame (31). The bottom of the transfer groove (301) is movably clamped with a bottom ring seat (37), and the top of the bottom ring seat (37) is provided with four mounting clamp frames (38) distributed in a ring array, and the mounting clamp frames (38) are movably clamped in the transfer groove (301). External filter cores (381) are fixedly installed in the mounting clamp frames (38), and the external filter cores (381) are movably clamped in the transfer groove (301).

2. A high-efficiency petroleum drilling fluid circulation system according to claim 1, characterized in that: The degassing mechanism (4) comprises a degassing outer cylinder (41), wherein the degassing mechanism (4) is fixedly mounted on the bottom of the support frame (1) through the degassing outer cylinder (41); a liquid inlet pipe (411) is fixedly mounted in the middle of the top end of the degassing outer cylinder (41); the top end of the liquid inlet pipe (411) and the bottom end of the discharge pipe (21) are fixedly mounted; a liquid outlet (412) is fixedly mounted in the middle of the bottom end of the degassing outer cylinder (41); a liquid control valve (413) is fixedly mounted at the bottom end of the liquid outlet (412); a liquid outlet pipe (414) is fixedly mounted at the bottom end of the liquid control valve (413); an exhaust pipe (42) and a liquid inlet pipe (43) are fixedly mounted at the top end of the degassing outer cylinder (41); a rotating shaft (44) is rotatably mounted in the middle of the degassing outer cylinder (41); a degassing rod (441) is fixedly mounted on the outside of the rotating shaft (44).

3. A high-efficiency petroleum drilling fluid circulation system according to claim 2, characterized in that: The air guide mechanism (5) comprises an air guide ring tube (51) and a U-shaped conduit (52); the air guide ring tube (51) is fixedly mounted between a first sealing rotating member (35) and a second sealing rotating member (36); an air guide port (511) is integrally formed on the outer side of the air guide ring tube (51); one end of the U-shaped conduit (52) is fixedly clamped on the top of the processing outer tube (2); an exhaust main pipe (53) is fixedly mounted between one end of the air guide port (511) away from the air guide ring tube (51) and one end of the U-shaped conduit (52) away from the processing outer tube (2); the bottom end of the exhaust main pipe (53) is fixedly mounted on the top end of the exhaust pipe (42).

4. A high-efficiency petroleum drilling fluid circulation system according to claim 3, characterized in that: The feed pipe (6) movably penetrates the middle part of the air guide ring cylinder (51), and the bottom of the feed pipe (6) is fixedly installed in the feed port (342).

5. A high-efficiency petroleum drilling fluid circulation system according to claim 1, characterized in that: The top of the installation card frame (38) extends out of the top of the processing outer frame (31), and a mounting groove (382) is provided on the top of the installation card frame (38).

6. A high-efficiency petroleum drilling fluid circulation system according to claim 1, characterized in that: Positioning columns (383) are fixedly mounted on both sides of the bottom end of the installation card frame (38), and a positioning groove (384) corresponding to the positioning column (383) is opened on the top of the bottom ring seat (37), and the positioning column (383) is movably engaged in the corresponding positioning groove (384).

7. A high-efficiency petroleum drilling fluid circulation system according to claim 1, characterized in that: The bottom end of the sewage discharge frame (311) is configured as an inclined structure, a second sewage discharge port (313) is fixedly mounted on the outside of the bottom end of the sewage discharge frame (311), a second sewage discharge valve (315) is fixedly mounted on the bottom end of the second sewage discharge port (313), and a second sewage discharge pipe (33) is fixedly mounted on the bottom end of the second sewage discharge valve (315).

8. A high-efficiency petroleum drilling fluid circulation system according to claim 7, characterized in that: A through groove (312) is provided in the middle of the bottom end of the sewage discharge frame (311), the bottom end of the first sewage discharge port is fixedly engaged in the through groove (312), the bottom end of the first sewage discharge port extends out of the through groove (312) and is fixedly mounted with a first sewage discharge valve (314), the bottom end of the first sewage discharge valve (314) is fixedly mounted with a first sewage discharge pipe (32), the first sewage discharge pipe (32) is rotatably mounted in the middle of the bottom end of the treatment outer cylinder (2), the bottom of the first sewage discharge pipe (32) extends out of the bottom end of the treatment outer cylinder (2), and the middle of the second sewage discharge pipe (33) extends into the first sewage discharge pipe (32).

9. A high-efficiency petroleum drilling fluid circulation system according to claim 2, characterized in that: The top of the processing outer frame (31) extends out of the top of the processing outer cylinder (2); a gear ring (7) is fixedly installed on the top of the processing outer frame (31); a first rotating seat (74) is fixedly installed on the top of the outer side of the processing outer cylinder (2); a driving motor (75) is fixedly installed on the bottom end of the first rotating seat (74); a driving gear (76) is fixedly installed on the driving end of the driving motor (75); the driving gear (76) is meshingly connected with the outer side of the gear ring (7); two second rotating seats (71) distributed symmetrically are fixedly installed on the outer side of the processing outer cylinder (2); an auxiliary shaft (72) is rotatably installed at the end of the second rotating seat (71); a transmission gear (73) is fixedly installed on the top of the auxiliary shaft (72); the outer side of the transmission gear (73) is meshingly connected with the outer side of the gear ring (7); the bottom end of the auxiliary shaft (72) is fixedly installed with the top of the rotating shaft (44).

10. A high-efficiency petroleum drilling fluid circulation system according to claim 1, characterized in that: The oil drilling fluid circulation system includes a treatment system, which includes a primary inner screen treatment system and a secondary outer filter system. A degassing system is provided at the end of the treatment system, and an air guide system is provided between the primary inner screen treatment system, the secondary outer filter system and the degassing system.

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