Slurry purification system of solid control equipment for oil field drilling fluid and use method of slurry purification system

Abstract

The invention relates to the technical field of oil field drilling fluid slurry purification and solid control, and discloses a slurry purification system of solid control equipment for oil field drilling fluid and a use method of the slurry purification system. And a vibration assembly, a desanding assembly, a degassing assembly and a power increment assembly are arranged at the top of the supporting table. Various solid impurities in the oil field drilling fluid slurry are separated one by one, a good purification effect is achieved, the oil field drilling fluid slurry can be degassed so as to recover the specific gravity and viscosity of the oil field drilling fluid slurry, the whole solid control equipment system does not need to be shut down in the cleaning process, and the cleaning efficiency is improved. It is guaranteed that solid control circulation purification of oil field drilling fluid slurry can still be conducted in the cleaning process, the working efficiency is improved, the whole solid control equipment purification system is high in overall circulation purification efficiency, all purification circulation efficiencies are separated independently, and control and overhauling are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of oilfield drilling fluid mud purification and solids control, in particular to a mud purification system of oilfield drilling fluid solids control equipment and a use method thereof. Background Art

[0002] During the drilling process, mud enters the formation through the drill pipe, and the drilling fluid is discharged along with the drilling waste after use. Since mud is expensive and can damage the environment, a solids control system came into being in this situation. The solids control system for oil drilling mainly controls and separates solid substances in the drilling fluid, such as mud, sand, and gravel, so that they can be recycled. It is also called a mud purification system. During the drilling process, rock formations, gas formations, or underground hot springs are often encountered. During the drilling process of the rock formation, the huge friction of the rock blocks causes great damage to the drill bit. Encountering gas formations or hot springs during drilling can easily cause well kicks and blowouts. In this case, mud is used. Mud can effectively lubricate the drill bit. At the same time, mud with barite and flocs can effectively balance the bottom pressure and prevent blowouts.

[0003] However, the purification circulation components of traditional oilfield drilling fluid mud solids control equipment systems are not controlled separately. The entire equipment system needs to be shut down before it can be inspected and cleaned, which affects work efficiency. In addition, the circulation storage volume of drilling fluid mud is fixed and cannot be adjusted according to the depth of oil fields, which limits its scope of application. Summary of the Invention

[0004] The purpose of the present invention is to provide a mud purification system of solids control equipment for oilfield drilling fluid and a method of using the same, which solves the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A mud purification system for solids control equipment of oilfield drilling fluid comprises a support platform, a sedimentation tank is fixedly installed at the bottom of the support platform, and a vibration component, a sand removal component, a degassing component and a power increment component are respectively arranged on the top of the support platform;

[0007] The sedimentation tank is used for settling sediment in the oilfield drilling fluid mud, the vibration assembly is used to separate large suspended particles in the oilfield drilling fluid mud, the sand removal assembly is used to separate small suspended particles in the oilfield drilling fluid mud, the degassing assembly is used to remove gas from the oilfield drilling fluid mud, and the power increment assembly is used to deliver power to the oilfield drilling fluid mud and increase the circulating storage capacity;

[0008] A through hole is provided on the sedimentation box, and the interior of the sedimentation box includes a sedimentation chamber and a supernatant chamber. A delivery pump and a sludge pump are fixedly installed inside the through hole. A feed hole is provided on one side of the sedimentation chamber, and the sedimentation chamber is connected to the supernatant chamber. A matching wedge block is fixedly connected to the lower side of the interior of the sedimentation chamber, and a silt removal pipe is connected to the lower part of one side of the sedimentation chamber. The interior of the supernatant chamber is connected with a delivery pipe, the input end of the delivery pump is connected to the delivery pipe, and the output end of the delivery pipe is used to transport the oilfield drilling fluid slurry to the vibration component, the input end of the silt pump is connected to the silt removal pipe, and a matching L-shaped plate is fixedly connected between the sedimentation chamber and the supernatant chamber, and a return pipe is passed through and interference-fitted on the L-shaped plate. The return pipe is used to reflux small particle suspensions in the oilfield drilling fluid slurry separated in the desanding component.

[0009] As a further solution of the present invention: the vibration assembly includes a three-way pipe, two bases and two vibration boxes, the four corners of the top of the base are fixedly installed with columns, the four corners of the outer wall of the vibration box are fixedly installed with support ears, and the outer walls of both sides of the vibration box are fixedly installed with vibration motors, a spring is arranged between the columns and the support ears, the interior of the vibration box is fixedly connected with a vertical plate, and a waste discharge hole is opened on the front side of the vibration box, an inclined filter matching the vibration box is fixedly installed on the rear inner wall of the vibration box and the top of the vertical plate, the upper rear part of the vibration box is connected with a feed pipe, and the lower rear part of the vibration box is connected with a discharge pipe, one end of the three-way pipe is connected to the output end of the delivery pump, and both ends of the three-way pipe are connected to the two feed pipes.

[0010] As a further solution of the present invention: the sand removal assembly includes a second base and two conical boxes, a waste box is fixedly installed on the top of the second base, the two conical boxes are arranged on both sides of the top of the waste box, and the bottom of the conical box is connected with two waste pipes, the lower end of the waste pipe is connected with the interior of the waste box, and the upper end of the return pipe is connected with the interior of the waste box, the top and the upper outer wall of the conical box are connected with a discharge pipe 2 and a feed pipe 2, and a matching inverted trapezoidal platform is fixedly installed inside the conical box, the feed pipe 2 is tangent to the inner wall of the conical box, and each of the feed pipe 2 is connected to each of the discharge pipe 1, support rods are symmetrically fixedly installed on both sides of the top of the second base, a support ring is fixedly installed between the two support rods, the conical box is sleeved on the support ring, and the conical box and the support ring are fixedly installed.

[0011] As a further solution of the present invention: the degassing component includes a base three and two degassing cylinders, the two degassing cylinders are arranged on both sides above the base three, the upper part of one side of the degassing cylinder is connected to a feed pipe three, and the lower part of the other side of the degassing cylinder is connected to a discharge pipe three, each of the feed pipe three is connected to each of the discharge pipe two, the top of the degassing cylinder is connected to an exhaust pipe, and a servo motor is fixedly installed at the bottom of the degassing cylinder, the upper end of the exhaust pipe is connected to an air pump, and a stirring shaft one is rotatably installed in the middle of the degassing cylinder, and A stirring shaft 2 is installed at both ends of the degassing cylinder, and the lower end of the stirring shaft 1 is fixedly installed on the output end of the servo motor. A gear 1 is sleeved and fixedly installed on the stirring shaft 1, and a number of stirring blades 1 are fixedly installed on the stirring shaft 1. A gear 2 is sleeved and fixedly installed on the stirring shaft 2, and a number of stirring blades 2 are fixedly installed on the stirring shaft 2. The gear 1 is meshed with the two gears 2. Four pillars are fixedly installed at equal distances on the outer edge of the bottom of the degassing cylinder, and the lower ends of the pillars are fixedly installed on the top of the base 3.

[0012] As a further solution of the present invention: the power increment assembly includes a base four, a power pump, a two-way pipe, a four-way pipe and three incremental cylinders. The power pump and the three incremental cylinders are fixedly installed on the top of the four-way pipe. The top of the incremental cylinder is connected to a four-way feed pipe, and the lower part of one side of the incremental cylinder is connected to a four-way discharge pipe. One end of the two-way pipe is connected to the input end of the power pump, and the other two ends of the two-way pipe are respectively connected to the two three-way discharge pipes. The upper end of the four-way pipe is connected to the output end of the power pump, and the other three ends of the four-way pipe are connected to the four-way feed pipe, and three three-way solenoid valves are provided on the four-way pipe.

[0013] As a further solution of the present invention: solenoid valves 1 are provided at both ends of the three-way pipe 1, and two solenoid valves 2 are provided on the three-way pipe 2.

[0014] As a further solution of the present invention: a plurality of legs are fixedly connected at equal intervals at the outer edge of the bottom of the support platform, a slide groove is provided at the bottom of the leg, and a turntable is provided on one side of the leg, a threaded shaft and a slide rod are rotatably mounted and slidably connected inside the slide groove, a threaded groove matching the threaded shaft is provided on the top of the slide rod, and an anti-slip pad is fixedly installed on the bottom of the slide rod, a driven bevel gear is sleeved and fixedly mounted on the upper part of the threaded shaft, and the lower end of the threaded shaft is inside the thread groove, a rotating shaft is fixedly mounted on one side of the turntable, one end of the rotating shaft passes through one side of the leg, and the rotating shaft is rotatably connected to the leg, and an active bevel gear is fixedly mounted on one end of the rotating shaft inside the slide groove, and the active bevel gear is meshed with the driven bevel gear.

[0015] As a further solution of the present invention: a matching fence is fixedly installed on the outer edge of the top of the support platform.

[0016] A method for using a mud purification system of solids control equipment for oilfield drilling fluid, the method comprising the following steps:

[0017] Step 1: The oilfield drilling fluid is delivered to the interior of the sedimentation chamber through the feed hole. The sediment in the oilfield drilling fluid is deposited on the lower side of the sedimentation chamber, and the suspended liquid in the oilfield drilling fluid is suspended on the upper side of the sedimentation chamber and inside the supernatant chamber. The sludge pump discharges the sediment through the silt removal pipe, and the delivery pump delivers the suspended liquid in the oilfield drilling fluid to the vibration component through the delivery pipe;

[0018] Step 2: The oilfield drilling fluid suspension in the above step 1 then enters the interior of the vibration box through the tee pipe 1 and the feed pipe 1. Since a spring is provided between the column and the support ear, the vibration box can be driven to vibrate by the vibration motor, so that large particles of suspended matter in the oilfield drilling fluid slurry slide from the inclined filter screen to the front side of the vibration box, and the oilfield drilling fluid slurry and small particles of suspended matter flow into the rear side of the vibration box;

[0019] Step 3: The power pump transports the oilfield drilling fluid and small particle suspension to the inside of the conical box through the discharge pipe 1 and the feed pipe 2. The small particle suspension adheres to the inner wall of the conical box and is discharged into the waste box through the waste pipe. Finally, it flows back to the lower side of the sedimentation chamber through the return pipe for sewage discharge. The oilfield drilling fluid with small particle suspension removed enters the degassing cylinder through the discharge pipe 2 and the feed pipe 3.

[0020] Step 4: The air pump works to extract the gas in the oilfield drilling fluid mud inside the degassing cylinder through the exhaust pipe. The servo motor works to drive the stirring shaft 1 to rotate. The stirring shaft 1 drives the stirring shaft 2 to rotate in the opposite direction through the gear 1 and the gear 2. The stirring blade 1 and the stirring blade 2 can be rotated in the opposite direction, thereby increasing the stirring effect of the oilfield drilling fluid mud inside the degassing cylinder and making it easier to extract the gas in the oilfield drilling fluid mud.

[0021] Step 5: The power pump then transports the degassed oilfield drilling fluid mud to the interior of the increment cylinder through the discharge pipe 3, the feed pipe 3, the four-way pipe and the feed pipe 4, thereby achieving solid control and purification of the oilfield drilling fluid mud, and adjusting the circulating storage volume of the oilfield drilling fluid mud by controlling the opening and closing of the solenoid valve 3.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] 1. Through the coordinated use of the sedimentation box, through hole, feed hole, delivery pump, sludge pump, sedimentation chamber, supernatant chamber, wedge block, delivery pipe, L-shaped semi-circular, return pipe and silt removal pipe, the sediment and suspended matter in the oilfield drilling fluid mud are separated, and the small particle suspended matter in the oilfield drilling fluid mud separated in the sediment and desanding component is conveniently returned and discharged. The vibration component composed of the base one, vibration box, tee pipe one, column, support ear, spring, vibration motor, inclined filter screen, feed pipe one, waste pipe, discharge pipe one and vertical plate is used to separate the suspended matter into large and small particles by vibration. The desanding component composed of the base two, conical box, waste box, feed pipe two, discharge pipe two, waste pipe, support rod, support ring and inverted trapezoidal table is used to achieve the centrifugal separation effect of small particle suspended matter in the oilfield drilling fluid mud, and various solid impurities in the oilfield drilling fluid mud are separated one by one, with good purification effect.

[0024] 2. The oilfield drilling fluid slurry can be degassed by the degassing assembly consisting of the base 3, the degassing cylinder, the feed pipe 3, the discharge pipe 3, the exhaust pipe, the air pump, the servo motor, the stirring shaft 1, the stirring shaft 2, the gear 1, the gear 2, the stirring blade 1 and the stirring blade to restore the specific gravity and viscosity of the oilfield drilling fluid slurry.

[0025] 3. The power increment assembly consisting of the base 4, the power pump, the tee pipe 2, the cross pipe, the increment cylinder, the feed pipe 4, the discharge pipe 4 and the solenoid valve 3 not only provides a solid control circulation purification effect for the oilfield drilling fluid mud, but also facilitates the adjustment of the circulation storage volume of the oilfield drilling fluid mud, and is convenient for the circulation purification of the drilling fluid mud in oilfields of different depths, thereby increasing the scope of application.

[0026] 4. By using solenoid valve 1 and solenoid valve 2, half of the circulating purification equipment can be stopped, so that the entire solid control equipment system does not need to be shut down during the cleaning process, ensuring that the solid control circulation purification of the oilfield drilling fluid mud can still be carried out during the cleaning process, thereby increasing work efficiency.

[0027] 5. The solid control equipment purification system has high overall circulation purification efficiency, and the efficiency of each purification cycle is separated separately, which is convenient for control and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0029] Figure 1 It is a schematic structural diagram of the main view of the present invention;

[0030] Figure 2 A cross-sectional view of the support platform and the sedimentation box of the present invention from the front;

[0031] Figure 3This is a schematic structural diagram of the vibration assembly of the present invention from a front view;

[0032] Figure 4 is a side sectional view of the vibration box of the present invention;

[0033] Figure 5 This is a schematic structural diagram of the sand removal assembly of the present invention from a front view;

[0034] Figure 6 It is a cross-sectional view of the front view of the conical box of the present invention;

[0035] Figure 7 Schematic diagram of the main view of the degassing assembly of the present invention;

[0036] Figure 8 A cross-sectional view of the front view of the degassing cylinder of the present invention;

[0037] Figure 9 Schematic diagram of the main view of the power increment assembly of the present invention;

[0038] Figure 10 It is a partial cross-sectional view of the front view of the supporting leg of the present invention.

[0039] Figure: 1, support platform; 2, sedimentation box; 21, through hole; 22, feed hole; 23, delivery pump; 24, sludge pump; 25, sedimentation chamber; 26, supernatant chamber; 27, wedge block; 28, delivery pipe; 29, L-shaped plate; 210, return pipe; 211, dredging pipe; 3, vibration assembly; 31, base 1; 32, vibration box; 33, tee pipe 1; 34, column; 35, support Ear; 36, Spring; 37, Vibration Motor; 38, Inclined Filter; 39, Feed Pipe 1; 310, Solenoid Valve 1; 311, Waste Discharge Hole; 312, Discharge Pipe 1; 313, Vertical Plate; 4, Sand Removal Assembly; 41, Base 2; 42, Conical Box; 43, Waste Box; 44, Feed Pipe 2; 45, Discharge Pipe 2; 46, Waste Pipe; 47, Support Rod; 48, Support Ring; 49, Reverse Trapezoidal table; 5. Degassing assembly; 51. Base three; 52. Degassing cylinder; 53. Feed pipe three; 54. Discharge pipe three; 55. Exhaust pipe; 56. Air pump; 57. Servo motor; 58. Pillar; 59. Stirring shaft one; 510. Stirring shaft two; 511. Gear one; 512. Gear two; 513. Stirring blade one; 514. Stirring blade two; 6. Power increment assembly; 61. Base four; 62. Power pump; 63. Tee pipe two; 64. Cross pipe; 65. Increment cylinder; 66. Feed pipe four; 67. Discharge pipe four; 68. Solenoid valve two; 69. Solenoid valve three; 7. Fence; 8. Support leg; 81. Slide; 82. Turntable; 83. Slide rod; 84. Threaded shaft; 85. Driven bevel gear; 86. Rotating shaft; 87. Driving bevel gear; 88. Threaded groove; 89. Anti-slip pad. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] Example 1:

[0042] See also Figure 1-9 The present invention provides a mud purification system for solid control equipment of oilfield drilling fluid, comprising a support platform 1, a sedimentation box 2 is fixedly installed at the bottom of the support platform 1, and a vibration component 3, a sand removal component 4, a degassing component 5 and a power increment component 6 are respectively provided on the top of the support platform 1;

[0043] The sedimentation box 2 is used for sedimentation of sediment in oilfield drilling fluid slurry. A through hole 21 is provided on the sedimentation box 2, and the interior of the sedimentation box 2 includes a sedimentation chamber 25 and a supernatant chamber 26. A delivery pump 23 and a sludge pump 24 are fixedly installed inside the through hole 21. A feed hole 22 is provided on one side of the sedimentation chamber 25, and the sedimentation chamber 25 is connected to the supernatant chamber 26. A matching wedge block 27 is fixedly connected to the lower side of the interior of the sedimentation chamber 25, and a dredging pipe 211 is connected to the lower part of one side of the sedimentation chamber 25. The supernatant chamber 2 6 is connected to the interior with a delivery pipe 28, the input end of the delivery pump 23 is connected to the delivery pipe 28, and the output end of the delivery pipe 28 is used to deliver the oilfield drilling fluid slurry to the vibration component 3, the input end of the sludge pump 24 is connected to the silt removal pipe 211, and a matching L-shaped plate 29 is fixedly connected between the sedimentation chamber 25 and the supernatant chamber 26. A return pipe 210 is passed through the L-shaped plate 29 and is connected with an interference fit. The return pipe 210 is used to return the small particle suspension in the oilfield drilling fluid slurry separated in the desanding component 4.

[0044] The sedimentation chamber 25 and the supernatant chamber 26 are provided to separate the sediment and suspended matter in the oilfield drilling fluid slurry, and the oilfield drilling fluid slurry and suspended matter are transported to the vibration component 3, and the sediment can be discharged conveniently. The small particle suspended matter in the oilfield drilling fluid slurry separated in the reflux desanding component 4 can be refluxed and discharged through the L-shaped plate 29 and the reflux pipe 210.

[0045] The vibration assembly 3 is used to separate large suspended particles in the oilfield drilling fluid. The vibration assembly 3 includes a three-way pipe 33, two bases 31 and two vibration boxes 32. The four corners of the top of the base 31 are fixedly installed with columns 34, the four corners of the outer wall of the vibration box 32 are fixedly installed with support ears 35, and the outer walls of both sides of the vibration box 32 are fixedly installed with vibration motors 37. A spring 36 is provided between the column 34 and the support ear 35. The interior of the vibration box 32 is fixed. It is fixedly connected with a vertical plate 313, and a waste discharge hole 311 is opened on the front side of the vibration box 32. An inclined filter 38 matching the vibration box 32 is fixedly installed on the rear inner wall of the vibration box 32 and the top of the vertical plate 313. The upper rear part of the vibration box 32 is connected with a feed pipe 39, and the lower rear part of the vibration box 32 is connected with a discharge pipe 312. One end of the three-way pipe 33 is connected to the output end of the delivery pump 23, and both ends of the three-way pipe 33 are connected to the two feed pipes 39.

[0046] The vibration box 32 is driven to vibrate by the columns 34, support ears 35, springs 36 and vibration motors 37, so that large particles of suspended matter in the oilfield drilling fluid slurry slide from the inclined filter 38 to the front side of the interior of the vibration box 32, and the oilfield drilling fluid slurry and small particles of suspended matter flow into the rear side of the interior of the vibration box 32, and the suspended matter is vibrated and separated into large and small particles.

[0047] The sand removal component 4 is used for separating small particle suspensions in oilfield drilling fluid mud. The sand removal component 4 includes a base 2 41 and two conical boxes 42. A waste box 43 is fixedly installed on the top of the base 2 41. The two conical boxes 42 are arranged on both sides of the top of the waste box 43, and the bottom of the conical box 42 is connected to two waste pipes 46. The lower end of the waste pipe 46 is connected to the interior of the waste box 43, and the upper end of the return pipe 210 is connected to the interior of the waste box 43. The top and upper outer wall of the conical box 42 are A discharge pipe 2 45 and a feed pipe 2 44 are connected, and a matching inverted trapezoidal platform 49 is fixedly installed inside the conical box 42. The feed pipe 2 44 is tangent to the inner wall of the conical box 42, and each feed pipe 2 44 is connected to each discharge pipe 1 312. Support rods 47 are symmetrically fixedly installed on both sides of the top of the base 2 41, and a support ring 48 is fixedly installed between the two support rods 47. The conical box 42 is sleeved on the support ring 48, and the conical box 42 and the support ring 48 are fixedly installed.

[0048] Through the feed pipe 2 44 arranged tangentially to the inner wall of the conical box 42, the oilfield drilling fluid mud entering the conical box 42 flows along the inner wall of the conical box 42, so that the small particle suspension of the oilfield drilling fluid mud is discharged from the waste pipe 46 through centrifugal action, and the oilfield drilling fluid mud is discharged from the discharge pipe 2 45, thereby achieving the centrifugal separation effect of the small particle suspension in the oilfield drilling fluid mud.

[0049] The degassing assembly 5 is used to remove gas from the drilling fluid mud in the oil field. The degassing assembly 5 includes a base 3 51 and two degassing cylinders 52. The two degassing cylinders 52 are arranged on both sides above the base 3 51. The upper part of one side of the degassing cylinder 52 is connected to a feed pipe 3 53, and the lower part of the other side of the degassing cylinder 52 is connected to a discharge pipe 3 54. Each feed pipe 3 53 is connected to each discharge pipe 2 45. The top of the degassing cylinder 52 is connected to an exhaust pipe 55, and a servo motor 57 is fixedly installed at the bottom of the degassing cylinder 52. The upper end of the exhaust pipe 55 is connected to an air pump 56. A stirring shaft 1 59 is rotatably installed in the middle of the degassing cylinder 52, and the degassing cylinder The two rotating stirring shafts 510 are installed inside 52, and the lower end of the stirring shaft 1 59 is fixedly installed with the output end of the servo motor 57. The stirring shaft 1 59 is sleeved and fixedly installed with a gear 1 511, and the stirring shaft 1 59 is fixedly installed with a number of stirring blades 1 513. The stirring shaft 2 510 is sleeved and fixedly installed with a gear 2 512, and the stirring shaft 2 510 is fixedly installed with a number of stirring blades 2 514. The gear 1 511 is meshed with the two gear 2s 512. Four pillars 58 are fixedly installed at equal distances on the outer edge of the bottom of the degassing cylinder 52, and the lower end of the pillar 58 is fixedly installed with the top of the base 3 51.

[0050] The air inside the degassing cylinder 52 is discharged through the exhaust pipe 55 by the air pump 56, so that the degassing cylinder 52 is in a negative pressure state, and the gas in the oilfield drilling fluid mud can be discharged. The servo motor 57 drives the stirring shaft 1 59 to rotate, and the stirring shaft 1 59 drives the stirring shaft 2 510 to rotate in the opposite direction through the gear 1 511 and the gear 2 512, so that the stirring blade 1 513 and the stirring blade 2 514 can rotate in the opposite direction, thereby increasing the stirring effect of the oilfield drilling fluid mud inside the degassing cylinder 52, making it easier to extract the gas in the oilfield drilling fluid mud, so as to restore the specific gravity and viscosity of the oilfield drilling fluid mud.

[0051] The power increment assembly 6 is used for power transmission and increasing the circulating storage capacity of oilfield drilling fluid mud. The power increment assembly 6 includes a base four 61, a power pump 62, a three-way pipe two 63, a four-way pipe 64 and three increment cylinders 65. The power pump 62 and the three increment cylinders 65 are fixedly installed on the top of the base four 61. The top of the increment cylinder 65 is connected to a feed pipe four 66, and the lower part of one side of the increment cylinder 65 is connected to a discharge pipe four 67. One end of the three-way pipe two 63 is connected to the input end of the power pump 62, and the other two ends of the three-way pipe two 63 are respectively connected to the two discharge pipes three 54. The upper end of the four-way pipe 64 is connected to the output end of the power pump 62, and the other three ends of the four-way pipe 64 are connected to the feed pipe four 66, and three solenoid valves three 69 are provided on the four-way pipe 64.

[0052] The degassed oilfield drilling fluid mud is then transported to the interior of the increment cylinder 65 through the discharge pipe 3 54, the feed pipe 3 53, the four-way pipe 64 and the feed pipe 4 66 by the power pump 62, thereby achieving the solid control circulation purification effect of the oilfield drilling fluid mud, and conveniently adjusting the circulation storage amount of the oilfield drilling fluid mud, conveniently applicable to the circulation purification of drilling fluid mud in oil fields of different depths, and increasing the scope of application.

[0053] Both ends of the three-way pipe 33 are provided with a solenoid valve 310, and the three-way pipe 63 is provided with two solenoid valves 68.

[0054] By using the solenoid valve 1 310 and the solenoid valve 2 68, half of the circulating purification equipment can be stopped, so that the entire solid control equipment system does not need to be shut down during the cleaning process, ensuring that the solid control circulation purification of the oilfield drilling fluid mud can still be carried out during the cleaning process, thereby increasing work efficiency.

[0055] Example 2:

[0056] See also Figure 1 and Figure 10 On the basis of the first embodiment, the present invention provides a mud purification system for solid control equipment of oilfield drilling fluid. A matching fence 7 is fixedly installed on the outer edge of the top of the support platform 1. A plurality of legs 8 are fixedly connected to the outer edge of the bottom of the support platform 1 at equal intervals. A chute 81 is provided at the bottom of the leg 8, and a turntable 82 is provided on one side of the leg 8. A threaded shaft 84 and a slide rod 83 are rotatably installed and slidably connected inside the chute 81. The top of the slide rod 83 is provided with a threaded shaft 84 matching the threaded shaft 84. Groove 88, and the bottom of the slide rod 83 is fixedly installed with an anti-slip pad 89, the upper part of the threaded shaft 84 is sleeved and fixedly installed with a driven bevel gear 85, and the lower end of the threaded shaft 84 is inside the threaded groove 88, and a rotating shaft 86 is fixedly installed on one side of the turntable 82, one end of the rotating shaft 86 passes through one side of the support leg 8, and the rotating shaft 86 is rotatably connected to the support leg 8, and the end of the rotating shaft 86 inside the slide groove 81 is fixedly installed with a driving bevel gear 87, and the driving bevel gear 87 is meshed with the driven bevel gear 85.

[0057] By rotating the turntable 82, the rotating shaft 86 is driven to rotate. The rotating shaft 86 drives the threaded shaft 84 through the driving bevel gear 87 and the driven bevel gear 85. The threaded shaft 84 drives the slide bar 83 to move along the slide groove 81 through the threaded groove 88. The height of each anti-slip pad 89 can be adjusted so that the solids control equipment system can still remain level on uneven ground.

[0058] Example 3:

[0059] Based on the first and second embodiments, the present invention provides a method for using a mud purification system of solids control equipment for oilfield drilling fluid. The method for using the mud purification system includes the following steps:

[0060] Step 1: The oilfield drilling fluid is delivered to the interior of the sedimentation chamber 25 through the feed hole 22. The sediment in the oilfield drilling fluid is deposited on the lower side of the sedimentation chamber 25, and the suspended liquid in the oilfield drilling fluid is suspended on the upper side of the sedimentation chamber 25 and in the supernatant chamber 26. The sludge pump 24 discharges the sediment through the silt removal pipe 211, and the delivery pump 23 delivers the suspended liquid in the oilfield drilling fluid to the vibration assembly 3 through the delivery pipe 28;

[0061] Step 2: The oilfield drilling fluid suspension in the above step 1 then enters the interior of the vibration box 32 through the tee pipe 33 and the feed pipe 39. Since a spring 36 is provided between the column 34 and the support ear 35, the vibration box 32 can be driven to vibrate by the vibration motor 37, so that large particles in the oilfield drilling fluid slurry slide from the inclined filter 38 to the front side of the vibration box 32, and the oilfield drilling fluid slurry and small particles flow into the rear side of the vibration box 32.

[0062] Step 3: The power pump 62 transports the oilfield drilling fluid slurry and small particle suspension to the interior of the conical box 42 through the discharge pipe 1 312 and the feed pipe 2 44. The small particle suspension adheres to the inner wall of the conical box 42 and is discharged into the waste box 43 through the waste pipe 46. Finally, it flows back to the lower side of the sedimentation chamber 25 through the return pipe 210 for sewage discharge. The oilfield drilling fluid slurry with small particle suspension removed enters the interior of the degassing cylinder 52 through the discharge pipe 2 45 and the feed pipe 3 53.

[0063] Step 4: The air pump 56 works to extract the gas in the oilfield drilling fluid slurry inside the degassing cylinder 52 through the exhaust pipe 55. The servo motor 57 works to drive the stirring shaft 1 59 to rotate. The stirring shaft 1 59 drives the stirring shaft 2 510 to rotate in the opposite direction through the gear 1 511 and the gear 2 512. This can make the stirring blade 1 513 and the stirring blade 2 514 rotate in the opposite direction, thereby increasing the stirring effect of the oilfield drilling fluid slurry inside the degassing cylinder 52 and making it easier to extract the gas in the oilfield drilling fluid slurry.

[0064] Step 5: The power pump 62 then transports the degassed oilfield drilling fluid mud to the interior of the increment cylinder 65 through the discharge pipe 3 54, the feed pipe 3 53, the four-way pipe 64 and the feed pipe 4 66, thereby realizing the solid control circulation purification of the oilfield drilling fluid mud, and adjusting the circulating storage amount of the oilfield drilling fluid mud by controlling the opening and closing of the solenoid valve 3 69.

[0065] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A mud purification system for solids control equipment of oilfield drilling fluid, comprising a support platform (1), characterized in that: A sedimentation box (2) is fixedly mounted on the bottom of the support platform (1), and a vibration component (3), a sand removal component (4), a degassing component (5) and a power increment component (6) are respectively arranged on the top of the support platform (1); The sedimentation tank (2) is used for settling sediments in the oilfield drilling fluid slurry, the vibration component (3) is used for separating large suspended particles in the oilfield drilling fluid slurry, the sand removal component (4) is used for separating small suspended particles in the oilfield drilling fluid slurry, the degassing component (5) is used for removing gas from the oilfield drilling fluid slurry, and the power increment component (6) is used for power transmission of the oilfield drilling fluid slurry and increasing the circulating storage capacity; The sedimentation box (2) is provided with a through hole (21), and the interior of the sedimentation box (2) includes a sedimentation chamber (25) and a supernatant chamber (26). A delivery pump (23) and a sludge pump (24) are fixedly installed inside the through hole (21). A feed hole (22) is provided on one side of the sedimentation chamber (25), and the sedimentation chamber (25) is communicated with the supernatant chamber (26). A matching wedge block (27) is fixedly connected to the lower side of the interior of the sedimentation chamber (25), and a dredging pipe (211) is communicated with the lower part of one side of the sedimentation chamber (25). The interior of the supernatant chamber (26) is communicated with A delivery pipe (28) is provided, wherein the input end of the delivery pump (23) is connected to the delivery pipe (28), and the output end of the delivery pipe (28) is used to deliver the oilfield drilling fluid slurry to the vibration component (3). The input end of the sludge pump (24) is connected to the silt removal pipe (211). A matching L-shaped plate (29) is fixedly connected between the sedimentation chamber (25) and the supernatant chamber (26). A return pipe (210) is passed through the L-shaped plate (29) and is connected with an interference fit. The return pipe (210) is used to return small suspended particles in the oilfield drilling fluid slurry separated in the desanding component (4).

2. The mud purification system for solids control equipment of oilfield drilling fluid according to claim 1, characterized in that: The vibration assembly (3) includes a three-way pipe (33), two bases (31) and two vibration boxes (32), the four corners of the top of the base (31) are fixedly mounted with columns (34), the four corners of the outer wall of the vibration box (32) are fixedly mounted with support ears (35), and the outer walls of both sides of the vibration box (32) are fixedly mounted with vibration motors (37), a spring (36) is provided between the columns (34) and the support ears (35), and the interior of the vibration box (32) is fixedly connected with a vertical plate (313), and A waste discharge hole (311) is provided on the front side of the vibration box (32); an inclined filter (38) matching the vibration box (32) is fixedly installed on the rear inner wall of the vibration box (32) and the top of the vertical plate (313); a feed pipe (39) is connected to the upper rear side of the vibration box (32), and a discharge pipe (312) is connected to the lower rear side of the vibration box (32); one end of the three-way pipe (33) is connected to the output end of the delivery pump (23), and both ends of the three-way pipe (33) are connected to the two feed pipes (39).

3. The mud purification system for solids control equipment of oilfield drilling fluid according to claim 2, characterized in that: The sand removal assembly (4) includes a second base (41) and two conical boxes (42), a waste box (43) is fixedly installed on the top of the second base (41), the two conical boxes (42) are arranged on both sides of the top of the waste box (43), and the bottom of the conical box (42) is connected to two waste pipes (46), the lower end of the waste pipe (46) is connected to the inside of the waste box (43), and the upper end of the return pipe (210) is connected to the inside of the waste box (43), and the top and upper outer wall of the conical box (42) are both connected to the discharge pipe (45) and the feed pipe (46). (44), and a matching inverted trapezoidal platform (49) is fixedly installed inside the conical box (42), the feed pipe 2 (44) is tangent to the inner wall of the conical box (42), and each of the feed pipe 2 (44) is connected to each of the discharge pipe 1 (312) by pipes, support rods (47) are symmetrically fixedly installed on both sides of the top of the base 2 (41), and a support ring (48) is fixedly installed between the two support rods (47), the conical box (42) is sleeved on the support ring (48), and the conical box (42) and the support ring (48) are fixedly installed.

4. The mud purification system for solids control equipment of oilfield drilling fluid according to claim 3, characterized in that: The degassing assembly (5) includes a base three (51) and two degassing cylinders (52), the two degassing cylinders (52) are arranged on both sides above the base three (51), the upper part of one side of the degassing cylinder (52) is connected to a feed pipe three (53), and the lower part of the other side of the degassing cylinder (52) is connected to a discharge pipe three (54), each of the feed pipe three (53) and each of the discharge pipe two (45) are pipe-connected, the top of the degassing cylinder (52) is connected to an exhaust pipe (55), and a servo motor (57) is fixedly installed at the bottom of the degassing cylinder (52), the upper end of the exhaust pipe (55) is connected to an air pump (56), a stirring shaft one (59) is rotatably installed in the middle of the degassing cylinder (52), and the inside of the degassing cylinder (52) is connected to the exhaust pipe (55). A stirring shaft 2 (510) is installed for rotation twice, the lower end of the stirring shaft 1 (59) is fixedly installed with the output end of the servo motor (57), the stirring shaft 1 (59) is sleeved and fixedly installed with a gear 1 (511), and the stirring shaft 1 (59) is fixedly installed with a plurality of stirring blades 1 (513), the stirring shaft 2 (510) is sleeved and fixedly installed with a gear 2 (512), and the stirring shaft 2 (510) is fixedly installed with a plurality of stirring blades 2 (514), the gear 1 (511) and the two gears 2 (512) are meshed and connected, four pillars (58) are fixedly installed at equal distances on the outer edge of the bottom of the degassing cylinder (52), and the lower ends of the pillars (58) are fixedly installed with the top of the base 3 (51).

5. The mud purification system for solids control equipment of oilfield drilling fluid according to claim 4, characterized in that: The power increment assembly (6) includes a base four (61), a power pump (62), a three-way pipe two (63), a four-way pipe (64) and three increment cylinders (65). The power pump (62) and the three increment cylinders (65) are fixedly installed on the top of the base four (61). The top of the increment cylinder (65) is connected to a feed pipe four (66), and the lower part of one side of the increment cylinder (65) is connected to a discharge pipe four (67). One end of the three-way pipe two (63) is connected to the input end of the power pump (62), and the other two ends of the three-way pipe two (63) are respectively connected to the two discharge pipes three (54). The upper end of the four-way pipe (64) is connected to the output end of the power pump (62), and the other three ends of the four-way pipe (64) are connected to the feed pipe four (66), and three solenoid valves three (69) are provided on the four-way pipe (64).

6. The mud purification system for solids control equipment of oilfield drilling fluid according to claim 5, characterized in that: Both ends of the three-way pipe (33) are provided with a first electromagnetic valve (310), and the two three-way pipe (63) are provided with two second electromagnetic valves (68).

7. The mud purification system for solids control equipment of oilfield drilling fluid according to claim 1, characterized in that: The outer edge of the bottom of the support platform (1) is fixedly connected with a plurality of legs (8) at equal intervals, the bottom of the legs (8) is provided with a slide groove (81), and a turntable (82) is provided on one side of the legs (8), the interior of the slide groove (81) is respectively rotatably mounted and slidably connected with a threaded shaft (84) and a slide rod (83), the top of the slide rod (83) is provided with a threaded groove (88) matching the threaded shaft (84), and the bottom of the slide rod (83) is fixedly provided with an anti-slip pad (89), the threaded shaft (8 4), a driven bevel gear (85) is sleeved and fixedly installed on the upper part of the rotating disk (82), and the lower end of the threaded shaft (84) is located inside the threaded groove (88). A rotating shaft (86) is fixedly installed on one side of the rotating disk (82), one end of the rotating shaft (86) passes through one side of the supporting leg (8), and the rotating shaft (86) is rotatably connected to the supporting leg (8). A driving bevel gear (87) is fixedly installed on one end of the rotating shaft (86) located inside the sliding groove (81), and the driving bevel gear (87) is meshed with the driven bevel gear (85).

8. The mud purification system for solids control equipment of oilfield drilling fluid according to claim 1, characterized in that: A matching fence (7) is fixedly installed on the outer edge of the top of the support platform (1).

9. The method for using the mud purification system of solids control equipment for oilfield drilling fluid according to any one of claims 1 to 8, characterized in that: The following steps are included: Step 1: The oilfield drilling fluid enters the sedimentation chamber (25) through the feed hole (22), the sediment sinks, and the suspension is suspended in the upper part of the sedimentation chamber and the supernatant chamber (26). The sludge pump (24) discharges the sediment through the silt removal pipe (211), and the delivery pump (23) delivers the suspension to the vibration component (3) through the delivery pipe (28); Step 2: The suspension enters the vibration box (32) through the three-way pipe (33) and the feed pipe (39). The vibration motor (37) drives the box to vibrate by the action of the spring (36). The large particles of suspension slide from the inclined filter (38) to the front side of the box, and the mud and small particles of suspension flow to the rear side. Step 3: The power pump (62) sends the rear mud and small particle suspension to the conical box (42) through the discharge pipe 1 (312) and the feed pipe 2 (44). The small particles adhere to the wall and enter the waste box (43) through the waste pipe (46). Then, they return to the bottom of the sedimentation chamber (25) through the return pipe (210) for sewage discharge. The mud after removing the small particles enters the degassing cylinder (52) through the discharge pipe 2 (45) and the feed pipe 3 (53); Step 4: The air pump (56) extracts the mud gas in the air cylinder (52), and the servo motor (57) drives the stirring shaft (59), which causes the stirring shaft (510) to rotate in the opposite direction through the gear transmission, thereby enhancing stirring and helping to remove gas; Step 5: The power pump (62) sends the deaerated slurry to the increment cylinder (65) through the discharge pipe three (54) and other pipelines to complete the solid control purification, and the circulation storage amount is adjusted by controlling the electromagnetic valve three (69).

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