Method and equipment for processing oil-containing mud cuttings in oil and gas fields

Abstract

The present invention relates to the technical field of oil and gas field oil-containing mud treatment, and specifically to a method and equipment for treating oil and gas field oil and mud cuttings; comprising: a separation barrel; the separation barrel is a barrel with an opening upward; a separation plate; the separation plate is slidingly and sealingly connected to the inner wall of the separation barrel; the lower end of the separation plate is fixedly connected to a support rod; the support rod passes through the bottom of the separation barrel; the support rod is slidingly connected to the bottom of the separation barrel; a base; the base is located below the separation barrel; the base is connected to the end of the support rod away from the separation plate; the separation barrel and the base are connected by a No. 1 spring; the present invention drives the separation barrel downward by moving the separation bucket downward, so that the oil in the separation barrel gathers and moves upward and is discharged, thereby realizing rapid separation of oil and mud water, greatly improving the efficiency of oil and gas field oil and mud cuttings treatment, and at the same time, the application is also easy to use and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of oil-gas field oil-containing mud treatment, in particular to an oil-gas field oil-containing mud cuttings treatment method and equipment. Background Art

[0002] During oil and gas field drilling, mud is used to solidify the wellbore and lubricate the drill bit. This mud is divided into oily mud and non-oily mud. Non-oily mud is well-processed in oil fields. Oily mud lubricates the drill bit during drilling. This oily mud and drill cuttings must be processed after drilling and before disposal.

[0003] The existing oil and gas field oil-containing mud cuttings treatment requires the steps of dilution - oil-mud-water separation - dehydration - solidification - sewage treatment. During the oil-mud-water separation process, a scoop is usually used to scoop away the floating oil, or the floating oil is sucked away by suction. Since the oil floats over a large area, no matter which oil separation method is used, it takes a lot of time, which has a certain impact on the efficiency and convenience of oil and gas field oil-containing mud cuttings treatment.

[0004] In view of this, in order to overcome the above technical problems, the present invention proposes a method and equipment for processing oil-containing mud cuttings in oil and gas fields, which solves the above technical problems. Summary of the Invention

[0005] In order to make up for the shortcomings of the existing technology, the present invention proposes a method and equipment for processing oil-containing mud and rock cuttings in oil and gas fields. The present invention drives the separation cylinder downward by moving the separation bucket downward, so that the oil in the separation cylinder gathers and moves upward and then is discharged, thereby achieving rapid separation of oil and mud water, greatly improving the efficiency of processing oil-containing mud and rock cuttings in oil and gas fields. At the same time, the present application is also easy to use and easy to operate.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the oil and gas field oil-containing mud cuttings processing equipment of the present invention comprises:

[0007] Separation cylinder; the separation cylinder is cylindrical with an opening upward;

[0008] Separation disc; the separation disc is slidingly and sealingly connected to the inner wall of the separation cylinder; the lower end of the separation disc is fixedly connected to a support rod; the support rod passes through the bottom of the separation cylinder; the support rod is slidingly connected to the bottom of the separation cylinder;

[0009] Base; the base is located below the separation cylinder; the base is connected to the end of the support rod away from the separation disc; the separation cylinder and the base are connected by a No. 1 spring; the No. 1 spring is sleeved on the support rod;

[0010] The bracket is fixedly connected to the upper end of the base and is located on one side of the separation cylinder; the bracket is L-shaped; the other end of the bracket extends above the separation cylinder; the other end of the bracket is fixedly connected to the electric push rod; the electric push rod is vertically arranged;

[0011] Separation bucket; the separation bucket is in the shape of an inverted funnel; the separation bucket is fixedly connected to one end of the electric push rod close to the separation cylinder; the separation bucket is located directly above the separation cylinder, and the lower end of the separation bucket is slidably engaged with the upper end of the separation cylinder;

[0012] Separation tube; the separation tube is in an inverted U shape; one end of the separation tube is fixedly connected to and communicated with the inner side of the top of the separation bucket;

[0013] Controller; the controller is used to control the automatic operation of the processing equipment.

[0014] Preferably, the base is rotatably connected to the support rod; the outer wall of the support rod is provided with an external thread; the bottom of the separation cylinder is provided with a threaded hole; the threaded hole is threadedly connected to the support rod; and a fin is provided at the upper end of the separation disc.

[0015] Preferably, the upper end of the base is fixedly connected to a ring sleeve; the ring sleeve is arranged on the outer wall of the separation cylinder; the ring sleeve is slidably connected to the outer wall of the separation cylinder; a No. 1 annular groove is provided on the upper end of the ring sleeve; the No. 1 annular groove is connected to the outer wall of the ring sleeve through a discharge groove; the groove depth of the No. 1 annular groove increases as it approaches the discharge groove; the upper end surface of the separation disc is inclined.

[0016] Preferably, the external thread on the support rod is arranged on the upper half of the support rod.

[0017] Preferably, a card slot is provided on the upper port of the separation cylinder; the card slot is an inverted triangle; a card block is provided at a position corresponding to the card slot on the inner side of the separation bucket; the card block fits with the card slot; the card block is an inverted triangle.

[0018] Preferably, a rectangular ring is provided at the lower end of the separation bucket; a No. 2 annular groove is provided at the upper end of the rectangular ring; the lower end of the separation bucket is slidingly sealed and connected to the No. 2 annular groove; the lower end of the separation bucket and the bottom of the No. 2 annular groove are connected by a No. 2 spring; the inner side of the rectangular ring is fixedly connected to a sealing bag; the interior of the sealing bag is connected to the interior of the No. 2 annular groove through an air hole; the inner side of the rectangular ring is fixedly connected to a retaining ring; the inner diameter of the retaining ring is smaller than the outer diameter of the separation cylinder; the outer diameter of the retaining ring is larger than the outer diameter of the separation cylinder.

[0019] Preferably, the support rod is sealedly connected to the threaded hole; a one-way air outlet is provided through the upper end of the separation disc; a one-way air inlet is provided through the bottom of the separation cylinder; a one-way air outlet and a one-way air inlet are both provided with a one-way valve inside; an aeration chamber is formed between the separation disc, the side wall and the bottom wall of the separation cylinder.

[0020] A method for processing oil-containing mud and rock cuttings in an oil and gas field is applicable to the above-mentioned oil-containing mud and rock cuttings processing equipment in an oil and gas field. The method comprises the following steps:

[0021] S1: Pour the oily mud and cuttings into the separation barrel, and add water to dilute the oily mud and cuttings into mud water. The electric push rod drives the separation bucket downward. After the lower end of the separation bucket contacts the upper end of the separation barrel, the electric push rod continues to push the separation barrel downward while overcoming the elastic force of the No. 1 spring through the separation bucket. Then the electric push rod drives the separation bucket upward, and this process is repeated.

[0022] S2: After a period of rest, the electric push rod pushes the separation bucket and separation cylinder downward again. The muddy water in the separation cylinder squeezes the floating oil out from one end of the separation tube to the other end, and is finally collected by the No. 1 collection bucket.

[0023] S3: After the No. 1 collection bucket has completed collecting the oil at the other end of the separation tube, the electric push rod pushes the separation bucket and separation cylinder downward again, squeezing the sewage inside the separation cylinder along the other end of the separation tube into the No. 2 collection bucket for collection. Finally, the controller controls the electric push rod to shorten and drive the separation bucket upward. The staff presses the separation cylinder again, and the mud and rock chips in the separation cylinder flow along the card slot into the No. 1 annular groove and are discharged along the discharge chute. The staff processes the oil, sewage and mud and rock chips separately and reuses them.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The present invention drives the separation cylinder downward by moving the separation bucket downward, so that the oil in the separation cylinder gathers and moves upward before being discharged, thereby achieving rapid separation of oil and mud water, greatly improving the efficiency of oil-containing mud and rock cuttings treatment in oil and gas fields. At the same time, the present application is also easy to use and operate.

[0026] 2. The present invention drives the support rod to rotate by the downward moving separation cylinder, and the rotating support rod drives the separation disk to rotate. During the rotation of the separation disk, the fin plate is driven to rotate, thereby rotating the material in the separation cylinder, so that the oil can be stirred out of the material and float up, avoiding the oil being mixed in the material, resulting in incomplete oil separation.

[0027] 3. The present invention moves the separation cylinder relatively to the inner side of the rectangular ring and squeezes the retaining ring, so that the air pressure inside the No. 2 annular groove increases and the sealing bag bulges, thereby sealing the outer wall of the separation cylinder and the rectangular ring. This prevents the sewage and oil from flowing out along the gap between the separation bucket and the separation cylinder when the separation bucket moves downward to squeeze the separation cylinder, thereby greatly improving the stability of the oil separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 is a perspective view of the processing equipment of the present invention;

[0030] Figure 2 is a cross-sectional view of the processing equipment of the present invention;

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 It is a diagram of the internal structure of the rectangular ring in the present invention;

[0033] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0034] Figure 6 is a flow chart of the method of the present invention;

[0035] In the figure: separation cylinder 1, threaded hole 11, card slot 12, separation plate 2, support rod 21, fin 22, one-way air outlet 23, one-way air inlet 24, base 3, No. 1 spring 31, bracket 4, electric push rod 41, separation bucket 5, card block 51, separation tube 6, ring sleeve 7, No. 1 annular groove 71, discharge trough 72, rectangular ring 8, No. 2 annular groove 81, No. 2 spring 82, sealing bag 83, air hole 84, retaining ring 85. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0037] like Figures 1 to 6 As shown, the oil and gas field oil-containing mud cuttings processing equipment of the present invention comprises:

[0038] Separation cylinder 1; the separation cylinder 1 is cylindrical with an opening upward;

[0039] Separation disc 2; the separation disc 2 is slidably and sealingly connected to the inner wall of the separation cylinder 1; the lower end of the separation disc 2 is fixedly connected to the support rod 21; the support rod 21 passes through the bottom of the separation cylinder 1; the support rod 21 is slidably connected to the bottom of the separation cylinder 1;

[0040] Base 3; the base 3 is located below the separation cylinder 1; the base 3 is connected to the end of the support rod 21 away from the separation disc 2; the separation cylinder 1 and the base 3 are connected by a No. 1 spring 31; the No. 1 spring 31 is sleeved on the support rod 21;

[0041] Bracket 4; the bracket 4 is fixedly connected to the upper end of the base 3 and is located on one side of the separation cylinder 1; the bracket 4 is L-shaped; the other end of the bracket 4 extends above the separation cylinder 1; the other end of the bracket 4 is fixedly connected to the electric push rod 41; the electric push rod 41 is vertically arranged;

[0042] Separation bucket 5; the separation bucket 5 is in the shape of an inverted funnel; the separation bucket 5 is fixedly connected to one end of the electric push rod 41 close to the separation cylinder 1; the separation bucket 5 is located directly above the separation cylinder 1, and the lower end of the separation bucket 5 is slidably engaged with the upper end of the separation cylinder 1;

[0043] Separation tube 6; the separation tube 6 is in an inverted U shape; one end of the separation tube 6 is fixedly connected to and communicates with the inner side of the top of the separation bucket 5;

[0044] Controller; the controller is used to control the automatic operation of the processing equipment;

[0045] During operation, the existing oil and gas field oil-containing mud and cuttings treatment needs to go through the steps of dilution - oil-mud water separation - dehydration - solidification - sewage treatment, and during the oil-mud water separation process, a scoop is usually used to scoop away the floating oil, or the floating oil is sucked away by suction. Since the oil floats over a large area, no matter which oil separation method is used, it takes a lot of time, which has a certain impact on the efficiency and convenience of oil and gas field oil-containing mud and cuttings treatment;

[0046] The oil in the oil tank 1 is lowered to the bottom of the oil tank 1 and the oil in the oil tank 1 is lowered to the bottom of the oil tank 1. When the oil in the oil tank 1 is lowered to the bottom of the oil tank 1, the oil in the oil tank 1 is lowered to the bottom of the oil tank 1. When the oil in the oil tank 1 is lowered to the bottom of the oil tank 1, the oil in the oil tank 1 is lowered to the bottom of the oil tank 1. When the oil in the oil tank 1 is lowered to the bottom of the oil tank 1, the oil in the oil tank 1 is lowered to the bottom of the oil tank 1 The oil is recycled and then the second collection bucket is replaced with the second collection bucket. The controller controls the electric push rod 41 to continue extending so that the sewage in the separation cylinder 1 is discharged along the separation pipe 6. Finally, the controller controls the electric push rod 41 to shorten so that the separation bucket 5 moves upward, and the No. 1 spring 31 pushes the separation cylinder 1 to move upward and reset. Finally, the staff takes out the mud and rock chips in the separation cylinder 1; the staff dehydrates the mud and rock chips and reuses them as resources, and the sewage is treated and then utilized or discharged.

[0047] The present invention drives the separation cylinder 1 downward by moving the separation bucket 5 downward, so that the oil in the separation cylinder 1 gathers and moves upward and then is discharged, thereby achieving rapid separation of the oil and mud water, greatly improving the efficiency of oil-containing mud and rock cuttings processing in oil and gas fields. At the same time, the present application is also easy to use and easy to operate.

[0048] As an embodiment of the present invention, the base 3 is rotatably connected to the support rod 21; the outer wall of the support rod 21 is provided with an external thread; the bottom of the separation cylinder 1 is provided with a threaded hole 11; the threaded hole 11 is threadedly connected to the support rod 21; the upper end of the separation disc 2 is provided with a fin plate 22;

[0049] During operation, the electric push rod 41 drives the separation cylinder 1 to move downward through the separation bucket 5. The separation cylinder 1 will drive the threaded hole 11 and the support rod 21 to produce corresponding axial movement. The upper end of the separation cylinder 1 is under pressure and there is a certain friction between it and the separation bucket 5. At the same time, the separation cylinder 1 and the base 3 are connected by a spring 31, so the support rod 21 rotates during the threaded transmission process. The rotating support rod 21 will rotate at the upper end of the base 3. At the same time, the rotating support rod 21 will drive the separation disc 2 to rotate. During the rotation of the separation disc 2, the fin 22 will be driven to rotate, thereby rotating the material in the separation cylinder 1, so that the oil can be stirred out of the material and float up, avoiding the oil being mixed in the material, resulting in incomplete oil separation.

[0050] As an embodiment of the present invention, the upper end of the base 3 is fixedly connected to a ring sleeve 7; the ring sleeve 7 is sleeved on the outer wall of the separation cylinder 1; the ring sleeve 7 is slidably connected to the outer wall of the separation cylinder 1; a first annular groove 71 is provided on the upper end of the ring sleeve 7; the first annular groove 71 is connected to the outer wall of the ring sleeve 7 through a discharge groove 72; the groove depth of the first annular groove 71 increases as it approaches the discharge groove 72; the upper end surface of the separation disc 2 is inclined;

[0051] When working, after the electric push rod 41 drives the separation cylinder 1 and the separation bucket 5 to move down to discharge the oil and sewage from the separation pipe 6, the controller controls the electric push rod 41 to drive the separation bucket 5 to move up, and the No. 1 spring 31 will push the separation cylinder 1 to move up, so that the separation bucket 5 forms a gap with the separation cylinder 1, and then a rod or other tool is used to overcome the elastic force of the No. 1 spring 31 to press the separation cylinder 1. After the separation cylinder 1 moves down, it moves relative to the separation disc 2, so that the mud and rock chips overflow along the upper end of the separation cylinder 1 and flow along the outer wall of the separation cylinder 1 into the No. 1 annular groove 71, and finally converge to the discharge chute 72 along the bottom of the No. 1 annular groove 71; this embodiment can keep the upper end height of the ring sleeve 7 consistent with the height of the lowest point of the upper end surface of the separation disc 2, so that the mud and rock chips on the outer wall of the separation cylinder 1 are scraped away by the ring sleeve 7 to avoid residue; the upper end surface of the separation disc 2 in this embodiment is inclined, which is beneficial to the discharge of mud and rock chips on the one hand, and on the other hand, it improves the stirring of the material during the rotation of the separation disc 2.

[0052] As an embodiment of the present invention, the external thread on the support rod 21 is provided on the upper half of the support rod 21;

[0053] During operation, when the electric push rod 41 pushes the separation cylinder 1 downward across the separation bucket 5 to drive the support rod 21 to rotate, the threaded hole 11 moves from the upper half of the support rod 21 to the lower half. Since the upper half of the support rod 21 is provided with an external thread, and the lower half of the support rod 21 is not provided with an external thread, the support rod 21 is not restricted by the thread after being rotated. During the rotation of the support rod 21, the separation disc 2 is driven to stir the material in the separation cylinder 1. Compared with the case where the support rod 21 is fully threaded, it is more beneficial for the support rod 21 to be provided with an external thread on the upper half of the support rod 21. The rotation further increases the rotation speed of the support rod 21. After the speed of the support rod 21 is lower than the expected value, the electric push rod 41 is shortened, and the No. 1 spring 31 drives the separation cylinder 1 to move up and return to the threaded hole 11 and the external threaded transmission state on the support rod 21. Then the electric push rod 41 drives the separation cylinder 1 to move down quickly, so that the separation disc 2 can rotate quickly again. By not setting the external thread on the lower half of the support rod 21, the separation cylinder 1 moves down to drive the discharge of the internal oil, thereby avoiding the shaking of the material inside the separation cylinder 1 due to the threaded transmission, which affects the stratification of oil and sewage or mud.

[0054] As an embodiment of the present invention, a slot 12 is provided on the upper end of the separation cylinder 1; the slot 12 is an inverted triangle; a block 51 is provided on the inner side of the separation bucket 5 at a position corresponding to the slot 12; the block 51 fits in the slot 12; the block 51 is an inverted triangle;

[0055] During operation, when the separation bucket 5 is driven by the electric push rod 41 to move downward, the separation bucket 5 will drive the inner block 51 to be stuck in the slot 12, and the electric push rod 41 pushes the separation cylinder 1 downward through the separation bucket 5 to drive the support rod 21 to rotate. Since the block 51 is stuck in the slot 12, the separation cylinder 1 will not rotate on its own, so that the separation cylinder 1 can drive the support rod 21 to rotate stably. In the process of discharging mud and rock chips from the upper port of the separation cylinder 1, the slot 12 serves the purpose of diversion, making it easier for mud and rock chips to be discharged from the upper port of the separation cylinder 1.

[0056] As an embodiment of the present invention, a rectangular ring 8 is provided at the lower end of the separation bucket 5; a second annular groove 81 is provided at the upper end of the rectangular ring 8; the lower end of the separation bucket 5 is slidingly and sealingly connected to the second annular groove 81; the lower end of the separation bucket 5 and the bottom of the second annular groove 81 are connected via a second spring 82; a sealing capsule 83 is fixedly connected to the inner side of the rectangular ring 8; the interior of the sealing capsule 83 is connected to the interior of the second annular groove 81 via an air hole 84; a retaining ring 85 is fixedly connected to the inner side of the rectangular ring 8; the inner diameter of the retaining ring 85 is smaller than the outer diameter of the separation cylinder 1; and the outer diameter of the retaining ring 85 is larger than the outer diameter of the separation cylinder 1;

[0057] During operation, the electric push rod 41 drives the separation bucket 5 to move downward and approach the separation cylinder 1. During the movement, the separation bucket 5 drives the rectangular ring 8 and the retaining ring 85 to move downward synchronously, and then the separation cylinder 1 moves relatively to the inside of the rectangular ring 8 and contacts the retaining ring 85. Then the electric push rod 41 continues to push the separation bucket 5 and overcomes the elastic force of the No. 2 spring 82 to move downward. The elastic force of the No. 1 spring 31 is greater than the elastic force of the No. 2 spring 82, so that the lower end of the separation bucket 5 and the No. 2 annular groove 81 slide relative to each other, thereby compressing the space in the No. 2 annular groove 81. The air pressure in the No. 2 annular groove 81 increases as it is squeezed, so that the internal gas of the No. 2 annular groove 81 will enter the interior of the sealing bag 83 along the air hole 84. The sealing bag 83 is an annular shape that can expand under pressure. Bag, so the sealing bag 83 will swell and fit to the outer wall of the separation cylinder 1 after being pressurized, so that the outer wall of the separation cylinder 1 and the rectangular ring 8 are sealed, thereby preventing the sewage and oil from flowing out along the gap between the separation bucket 5 and the separation cylinder 1 during the process of the separation bucket 5 moving down and squeezing the separation cylinder 1, greatly improving the stability of the oil being separated, and in the process of the electric push rod 41 driving the separation bucket 5 to move upward, the separation bucket 5 is away from the separation cylinder 1, the No. 2 spring 82 pushes the lower end of the separation bucket 5 and the No. 2 annular groove 81 to move relative to each other, thereby making the space of the No. 2 annular groove 81 larger and generating negative pressure, so that the internal gas of the sealing bag 83 is sucked into the No. 2 annular groove 81 by the negative pressure, so the internal gas of the sealing bag 83 is sucked away and then deflated.

[0058] As an embodiment of the present invention, the support rod 21 is sealedly connected to the threaded hole 11; a one-way air outlet 23 is provided at the upper end of the separation disc 2; a one-way air inlet 24 is provided at the bottom of the separation cylinder 1; a one-way air outlet 23 and a one-way air inlet 24 are both provided with a one-way valve; an aeration chamber is formed between the side walls and bottom walls of the separation disc 2 and the separation cylinder 1;

[0059] During operation, when the electric push rod 41 pushes the separation drum 1 downward through the separation bucket 5, the internal space of the aeration chamber increases, causing negative pressure to be generated inside the aeration chamber, thereby causing the external gas to open the one-way valve inside the one-way air inlet 24 and enter the aeration chamber along the one-way air inlet 24. In the process of the No. 1 spring driving the separation drum 1 to move upward, the internal space of the aeration chamber will be reduced, so that the gas inside the aeration chamber will open the one-way valve inside the one-way air outlet 23 after being pressurized, and enter the upper end of the separation disc 2 along the one-way air outlet 23, so that the gas is filled into the material inside the separation drum 1. Since the electric push rod 41 drives the separation drum 1 to move up and down repeatedly, the gas outlet of the one-way air outlet 23 is continuous, and the separation disc 2 stirs the material inside the separation drum 1, so that the material inside the separation drum 1 is fully dispersed, and then the oil mixed in the mud is fully stirred; in order to facilitate observation by the staff, the separation tube 6 and the separation drum 1 can be set to transparent materials for easy observation.

[0060] A method for processing oil-containing mud and rock cuttings in an oil and gas field is applicable to the above-mentioned oil-containing mud and rock cuttings processing equipment in an oil and gas field. The method comprises the following steps:

[0061] S1: Pour the oily mud and cuttings into the separation cylinder 1, and add water to dilute the oily mud and cuttings into mud water. The electric push rod 41 drives the separation bucket 5 to move downward. After the lower end of the separation bucket 5 contacts the upper end of the separation cylinder 1, the electric push rod 41 continues to push the separation cylinder 1 downward while overcoming the elastic force of the No. 1 spring 31 through the separation bucket 5. Then the electric push rod 41 drives the separation bucket 5 to move upward, and this process is repeated.

[0062] S2: After a period of rest, the electric push rod 41 pushes the separation bucket 5 and the separation cylinder 1 downward again. The muddy water in the separation cylinder 1 squeezes the floating oil out of the other end of the separation tube 6 along one end of the separation tube 6, and is finally collected by the No. 1 collection bucket;

[0063] S3: After the No. 1 collecting bucket completes collecting the oil at the other end of the separation tube 6, the electric push rod 41 pushes the separation bucket 5 and the separation cylinder 1 downward again, squeezing the sewage inside the separation cylinder 1 along the other end of the separation tube 6 into the No. 2 collecting bucket for collection. Finally, the controller controls the electric push rod 41 to shorten and drive the separation bucket 5 upward. The staff presses the separation cylinder 1 again, and the mud and rock chips in the separation cylinder 1 flow along the card slot 12 into the No. 1 annular groove 71 and are discharged along the discharge trough 72. The staff processes the oil, sewage and mud and rock chips separately and reuses them.

[0064] The specific workflow is as follows:

[0065] The staff pours the oil-containing mud and rock cuttings into the separation cylinder 1 and adds water to dilute the oil-containing mud and rock cuttings into mud water. The density of oil is less than that of water, so the oil will float in the mud water and float on the liquid surface of the mud water. Then the controller controls the electric push rod 41 to extend, and the extended electric push rod 41 drives the separation bucket 5 to move downward until the lower end of the separation bucket 5 contacts the upper end of the separation cylinder 1, and the upper end of the separation cylinder 1 slides into the inner side of the lower end of the separation bucket 5 under the movement of the separation bucket 5 to form a seal. As the separation bucket 5 continues to move downward under the push of the electric push rod 41, the separation bucket 5 overcomes the elastic force of the No. 1 spring 31 and drives the sealed separation cylinder 1 downward. The separation cylinder 1 and the separation disc 2 produce relative displacement, so that the mud water inside the separation cylinder 1 gradually approaches the separation bucket 5 after the separation cylinder 1 moves downward, and the separation bucket 5 is an inverted funnel shape. Its cross-sectional feature is that the higher the liquid level moves, the smaller its liquid surface cross-section is. Therefore, after the mud water moves up, it will drive the floating oil synchronously The oil is then recycled and the oil is then recycled to the hopper 6. The hopper 6 is moved upwards, and finally the cross section of the oil is gathered to one end of the separation tube 6 under the guidance of the inner inclined surface of the separation bucket 5. The electric push rod 41 moves slightly during the movement to avoid violent movement causing mud and water shaking to affect the discharge of the oil. As the electric push rod 41 pushes the separation bucket 5 and the separation cylinder 1 to move downwards, the mud and water will squeeze the oil out along one end of the separation tube 6 and the other end of the separation tube 6. A No. 1 collecting bucket is placed below the other end of the separation tube 6, so the oil is recycled and processed. Subsequently, a No. 2 collecting bucket is replaced with the other end of the separation tube 6. The controller controls the electric push rod 41 to continue to extend, so that the sewage in the separation cylinder 1 is discharged along the separation tube 6. Finally, the controller controls the electric push rod 41 to shorten, so that the separation bucket 5 moves upwards, and the No. 1 spring 31 pushes the separation cylinder 1 to move upwards and reset. Finally, the staff takes out the mud and rock chips in the separation cylinder 1; the staff dehydrates the mud and rock chips and reuses them as resources, and the sewage is treated and then utilized or discharged;

[0066] Among them, the electric push rod 41 drives the separation bucket 5 to push the separation cylinder 1 downward. During the process, the separation cylinder 1 will drive the threaded hole 11 and the support rod 21 to produce corresponding axial movement. The upper end of the separation cylinder 1 is under pressure and there is a certain friction between the separation bucket 5. At the same time, the separation cylinder 1 and the base 3 are connected by a No. 1 spring 31. Therefore, the support rod 21 rotates during the threaded transmission process, and the rotating support rod 21 will rotate at the upper end of the base 3. At the same time, the rotating support rod 21 will drive the separation disc 2 to rotate, and the fin 22 will rotate during the rotation of the separation disc 2. After the electric push rod 41 drives the separation cylinder 1 and the separation bucket 5 to move downward to discharge the oil and sewage from the separation pipe 6, the controller controls the electric push rod 41 to drive the separation bucket 5 When the separator 1 moves upward, the No. 1 spring 31 will push the separator 1 upward, so that a gap is formed between the separator 5 and the separator 1, and then a rod or other tool is used to overcome the elastic force of the No. 1 spring 31 to press the separator 1. After the separator 1 moves downward, it moves relative to the separator disc 2, so that the mud and rock chips overflow along the upper port of the separator 1, and flow along the outer wall of the separator 1 into the No. 1 annular groove 71, and finally converge to the discharge trough 72 along the bottom of the No. 1 annular groove 71; in the process of the electric push rod 41 pushing the separator 1 downward through the separator bucket 5 to drive the support rod 21 to rotate, the threaded hole 11 moves from the upper half of the support rod 21 to the lower half. Since the upper half of the support rod 21 is provided with an external thread, while the lower half of the support rod 21 is not provided with an external thread, Therefore, after being rotated, the support rod 21 is not restricted by the thread and rotates rapidly. During the rotation of the support rod 21, the separation disc 2 is driven to stir the material in the separation cylinder 1. Compared with the case where the support rod 21 is fully threaded, the upper part of the support rod 21 is provided with an external thread, which is more conducive to the rotation of the support rod 21 and the rotation speed of the support rod 21 is further increased. After the speed of the support rod 21 is lower than the expected value, the electric push rod 41 is shortened, and the No. 1 spring 31 drives the separation cylinder 1 to move up and return to the transmission state of the external thread on the threaded hole 11 and the support rod 21. Then the electric push rod 41 drives the separation cylinder 1 to move down rapidly, so that the separation disc 2 rotates rapidly again. In the process of the separation bucket 5 being driven downward by the electric push rod 41, the separation bucket 5 will drive The inner block 51 is inserted into the card slot 12, and the electric push rod 41 pushes the separation cylinder 1 downward across the separation bucket 5 to drive the support rod 21 to rotate. In the process of the electric push rod 41 pushing the separation cylinder 1 downward across the separation bucket 5, the internal space of the aeration chamber increases, so that negative pressure is generated inside the aeration chamber, so that the external gas will open the one-way valve inside the one-way air inlet 24 and enter the aeration chamber along the one-way air inlet 24. In the process of the No. 1 spring 31 driving the separation cylinder 1 to move upward, the internal space of the aeration chamber will decrease, so that the gas inside the aeration chamber will open the one-way valve inside the one-way air outlet 23 after being pressurized, and enter the upper end of the separation disc 2 along the one-way air outlet 23, so that the gas is filled into the material inside the separation cylinder 1;

[0067] Among them, the electric push rod 41 drives the separation bucket 5 to move downward and approach the separation cylinder 1. During the movement, the separation bucket 5 drives the rectangular ring 8 and the retaining ring 85 to move downward synchronously, and then the separation cylinder 1 moves relatively to the inner side of the rectangular ring 8 and contacts the retaining ring 85. Then the electric push rod 41 continues to push the separation bucket 5 and overcomes the elastic force of the No. 2 spring 82 to move downward. The elastic force of the No. 1 spring 31 is greater than the elastic force of the No. 2 spring 82, so that the lower end of the separation bucket 5 and the No. 2 annular groove 81 slide relative to each other, thereby compressing the space in the No. 2 annular groove 81. The air pressure in the No. 2 annular groove 81 increases after being squeezed, so that the gas inside the No. 2 annular groove 81 will enter the inside of the sealing bag 83 along the air hole 84. The sealing bag 83 is a ring-shaped bag that can expand under pressure, so the sealing bag 83 will bulge and fit to the outer wall of the separation cylinder 1 after being pressurized, thereby sealing the outer wall of the separation cylinder 1 and the rectangular ring 8.

[0068] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0069] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil and gas field oil-containing mud cuttings processing equipment, characterized in that: include: Separation cylinder (1); The separation cylinder (1) is in the shape of a cylinder with its opening facing upward; A separation disc (2); the separation disc (2) is slidably and sealingly connected to the inner wall of the separation cylinder (1); the lower end of the separation disc (2) is fixedly connected to a support rod (21); the support rod (21) passes through the bottom of the separation cylinder (1); the support rod (21) is slidably connected to the bottom of the separation cylinder (1); A base (3); the base (3) is located below the separation cylinder (1); the base (3) is connected to one end of the support rod (21) away from the separation disc (2); the separation cylinder (1) and the base (3) are connected via a No. 1 spring (31); the No. 1 spring (31) is sleeved on the support rod (21); A bracket (4); the bracket (4) is fixedly connected to the upper end of the base (3) and is located on one side of the separation cylinder (1); the bracket (4) is L-shaped; the other end of the bracket (4) extends above the separation cylinder (1); the other end of the bracket (4) is fixedly connected to the electric push rod (41); A separation bucket (5); the separation bucket (5) is in the shape of an inverted funnel; the separation bucket (5) is fixedly connected to one end of the electric push rod (41) close to the separation cylinder (1); the separation bucket (5) is located directly above the separation cylinder (1), and the lower end of the separation bucket (5) is in sliding engagement with the upper end of the separation cylinder (1); A separation tube (6); the separation tube (6) is in an inverted U shape; one end of the separation tube (6) is fixedly connected to and communicated with the inner side of the top of the separation bucket (5); Controller; the controller is used to control the automatic operation of the processing equipment; The base (3) is rotatably connected to the support rod (21); the outer wall of the support rod (21) is provided with an external thread; the bottom of the separation cylinder (1) is provided with a threaded hole (11); the threaded hole (11) is threadedly connected to the support rod (21); the upper end of the separation disc (2) is provided with a fin plate (22); The upper end of the base (3) is fixedly connected to a ring sleeve (7); the ring sleeve (7) is sleeved on the outer wall of the separation cylinder (1); the ring sleeve (7) is slidably connected to the outer wall of the separation cylinder (1); a first annular groove (71) is provided on the upper end of the ring sleeve (7); the first annular groove (71) is communicated with the outer wall of the ring sleeve (7) through a discharge groove (72); the groove depth of the first annular groove (71) increases as it approaches the discharge groove (72); The external thread on the support rod (21) is provided on the upper half of the support rod (21); The upper end of the separation cylinder (1) is provided with a slot (12); the slot (12) is an inverted triangle; a clamping block (51) is provided at a position corresponding to the slot (12) on the inner side of the separation bucket (5); the clamping block (51) fits in the slot (12); The lower end of the separation bucket (5) is provided with a rectangular ring (8); the upper end of the rectangular ring (8) is provided with a No. 2 annular groove (81); the lower end of the separation bucket (5) is slidingly sealed and connected in the No. 2 annular groove (81); the lower end of the separation bucket (5) and the bottom of the No. 2 annular groove (81) are connected via a No. 2 spring (82); the inner side of the rectangular ring (8) is fixedly connected to a sealing bag (83); the interior of the sealing bag (83) is communicated with the interior of the No. 2 annular groove (81) via an air hole (84); the inner side of the rectangular ring (8) is fixedly connected to a retaining ring (85); the inner diameter of the retaining ring (85) is smaller than the outer diameter of the separation cylinder (1).

2. The oil and gas field oil-containing mud cuttings processing equipment according to claim 1, characterized in that: The support rod (21) is sealedly connected to the threaded hole (11); a one-way air outlet (23) is provided through the upper end of the separation disc (2); and a one-way air inlet (24) is provided through the bottom of the separation cylinder (1).

3. A method for processing oily mud and rock cuttings in an oil and gas field, the method being applicable to the oily mud and rock cuttings processing equipment according to any one of claims 1 to 2, characterized in that: The steps of this method are as follows: S1: Pour the oil-containing mud and rock chips into the separation cylinder (1), and add water to dilute the oil-containing mud and rock chips into mud water. The electric push rod (41) drives the separation bucket (5) to move downward. After the lower end of the separation bucket (5) contacts the upper end of the separation cylinder (1), the electric push rod (41) continues to push the separation cylinder (1) downward while overcoming the elastic force of the No. 1 spring (31) across the separation bucket (5). Then the electric push rod (41) drives the separation bucket (5) to move upward, and this process is repeated. S2: After a period of rest, the electric push rod (41) pushes the separation bucket (5) and the separation cylinder (1) downward again, and the muddy water in the separation cylinder (1) squeezes the floating oil along one end of the separation tube (6) to the other end of the separation tube (6), and is finally collected by the No. 1 collection bucket; S3: After the No. 1 collecting bucket has finished collecting the oil at the other end of the separation tube (6), the electric push rod (41) pushes the separation bucket (5) and the separation barrel (1) downwards again, and squeezes the sewage inside the separation barrel (1) along the other end of the separation tube (6) to be collected in the No. 2 collecting bucket. Finally, the controller controls the electric push rod (41) to shorten and drive the separation bucket (5) upwards. The staff presses the separation barrel (1) again, and the mud and rock chips in the separation barrel (1) flow along the card slot (12) into the No. 1 annular groove (71) and are discharged along the discharge trough (72); the staff processes the oil, sewage and mud and rock chips separately and reuses them.

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