An oil-based drilling cuttings pyrolysis apparatus

Abstract

The application relates to the technical field of oil-based drilling cuttings and discloses an oil-based drilling cuttings pyrolysis device, which comprises an empty box, a rolling mechanism arranged at the top of the empty box, a fixing mechanism fixedly connected to the rear side of the top of the empty box and a driving mechanism fixedly connected to the front and rear sides of the empty box. The rolling mechanism comprises grooves arranged on the left and right sides of the top of the empty box. The servo motor winds the connecting rope, the sliding block drives the rack to move, the heating barrel rolls on the empty box, the heating equipment is used for heating, the heat energy moves upwards through the air outlet, the oil-based drilling cuttings are heated more uniformly, the oil-based drilling cuttings are better prevented from sticking together, the sliding strip drives the sliding plate to slide, the arc-shaped clamping blocks are clamped with the corresponding annular grooves, the threaded columns are fixedly connected with the corresponding mounting columns in a threaded mode, the whole heating barrel is kept in suspension, the blockage problem is avoided, the work burden is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of oil-based drill cuttings technology, specifically to an oil-based drill cuttings thermal desorption device. Background Technology

[0002] Oil-based drilling fluids possess excellent rheological properties, filtration properties, and lubricity. They are also resistant to high temperatures and salt-calcium corrosion, contributing to wellbore stability and reservoir protection. These characteristics make them widely used in deep oil exploration and the development of unconventional oil and gas resources such as shale gas and tight gas. However, this process also generates a large amount of waste oil-based drill cuttings. Oil-based drill cuttings contain significant amounts of mineral oil, phenolic compounds, heavy metals, and other toxic substances. If discharged or landfilled without treatment, they will severely pollute soil, surface water, and underground resources, making land reclamation difficult and causing serious damage to the ecological environment. This directly harms human health. Therefore, it is essential to strengthen source control and comprehensive management of oil-based drill cuttings throughout the entire process to achieve green drilling and a harmonious and sustainable development model shared by humans and nature.

[0003] Currently, the main technologies for treating oil-based drill cuttings include reinjection, solidification, incineration and landfill, solvent extraction (room temperature chemical desorption), and microbial treatment. While these technologies offer some treatment effectiveness, they also have limitations. For example, reinjection, solidification, and incineration / landfill technologies cannot recover the base oil from oil-based drill cuttings, resulting in resource waste and potential threats; incineration releases toxic and harmful substances, causing secondary pollution. Solvent extraction technology is complex and requires expensive reagents. Microbial treatment technology has a long processing cycle, requires a large area, and is subject to environmental conditions such as temperature and humidity.

[0004] According to Chinese patent document CN213924661U, a microwave thermal desorption device for oil-based drill cuttings is disclosed, which involves the processing of oil-based drill cuttings. This device includes a stirring tank for holding the oil-based drill cuttings; a stirring shaft and a stirring paddle are installed inside the stirring tank, with the paddle fixed to the stirring shaft. The rotation of the stirring shaft causes the paddle to stir the oil-based drill cuttings within the stirring tank; and a microwave heating device connected to the stirring tank via a pipe. The microwave energy generated by the microwave heating device reaches the stirring tank through the pipe, performing thermal desorption on the oil-based drill cuttings to achieve solid-liquid separation. By adding stirring technology to traditional microwave thermal desorption technology, uneven heating of the oil-based drill cuttings under the action of the microwave heating device is prevented, thus preventing them from clumping together. By combining stirring technology and microwave thermal desorption technology, the device improves the efficiency of base oil removal while ensuring environmentally friendly and safe processing of oil-based drill cuttings. However, simply using a stirring paddle does not provide good heating uniformity for the oil-based drill cuttings, and it can easily cause blockages during discharge, increasing workload and reducing efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a thermal desorption device for oil-based drill cuttings, which solves the problems that simply stirring with a stirring paddle does not result in good heating uniformity of oil-based drill cuttings, and that it easily causes blockages during discharge, increasing workload and reducing work efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an oil-based drill cuttings thermal desorption device, comprising an empty box, a rolling mechanism being provided on the top of the empty box, a fixing mechanism being fixedly connected to the rear side of the top of the empty box, and a driving mechanism being fixedly connected to the front and rear sides of the empty box.

[0007] The rolling mechanism includes grooves. Grooves are provided on the left and right sides of the top of the empty box. Hollow wheels are rotatably connected to the inner side of the grooves. Heating barrels are provided on adjacent sides of the two hollow wheels. The left and right ends of the heating barrels are respectively engaged with the corresponding hollow wheels. A storage bin is provided inside the heating barrel. A sealing disc is threaded to one side of the heating barrel. Two air outlet pipes are connected to the other side of the heating barrel. Valves are provided on the air outlet pipes. Annular grooves are provided on the left and right ends of the outer wall of the heating barrel. Racks are provided on the left and right sides of the top of the empty box near the middle. The racks are respectively engaged with the corresponding annular grooves.

[0008] Preferably, the fixing mechanism includes a support frame, with the support frame fixedly connected to the left and right sides of the top rear end of the empty box. A sliding strip is slidably connected to the top of the left support frame, and a sliding plate is fixedly connected to the top of the sliding strip. A fixing plate is fixedly connected to the top of the right support frame, and the fixing plate and the sliding plate are also fixedly connected.

[0009] Preferably, the driving mechanism includes an arc-shaped frame, with the arc-shaped frame fixedly connected to the front, rear, left, and right ends of the empty box. The outer wall of the arc-shaped frame is provided with an internal groove, and a slider is slidably connected to the inner side of the internal groove. A fixing ring is fixedly connected to the outer wall of the slider. A servo motor is fixedly connected to one side of the arc-shaped frame, and the servo motor is connected to the corresponding fixing ring through a connecting rope.

[0010] Preferably, the rolling mechanism further includes a connecting rod, with the connecting rod fixedly connected to adjacent sides of the two air outlet pipes, and a mounting rod fixedly connected to one side of the sealing disc, with a knob fixedly connected to one end of the mounting rod.

[0011] Preferably, the fixing mechanism further includes pushers, and pushers are fixedly connected to the opposite sides of the sliding plate and the fixing plate.

[0012] Preferably, the fixing mechanism further includes a hollow column, a hollow column is fixedly connected to one bottom side of the sliding plate and the fixing plate, a threaded column is rotatably connected inside the hollow column, and a mounting column is fixedly connected to the other bottom side of the sliding plate and the fixing plate, and the threaded column is threadedly connected to the corresponding mounting column.

[0013] Preferably, an auxiliary support plate is fixedly connected to the middle of the rear side of the empty box, and casters are fixedly connected to the four corners of the bottom of the empty box.

[0014] Preferably, the top of the empty box is provided with multiple air vents at equal intervals, and a heating device is fixedly connected to the top inner side of the empty box.

[0015] Preferably, the rear bow-shaped frame is connected by a stabilizing rod, and the two ends of the stabilizing rod are respectively fixedly connected to the left and right sides inside the empty box.

[0016] Preferably, a rubber pad is fixedly connected to the front side of the support frame, and a controller is fixedly connected to the right side of the empty box. The controller is electrically connected to the servo motor and the heating device, respectively.

[0017] Working Principle: Oil-based drill cuttings are placed into the storage bin and sealed with a sealing disc. The heating barrel is then placed in the corresponding hollow wheel and engaged. A servo motor winds up the connecting rope, causing the connecting rope to drive the slider to slide within the internal groove. This slider, in turn, moves the rack and pinion, causing the heating barrel to roll back and forth on the empty box. Simultaneously, the heating equipment heats the oil-based drill cuttings, and the heat energy moves upward through the vent, resulting in more even heating and preventing clumping. The heating barrel is placed on an auxiliary support plate, and a sliding plate is moved by a sliding strip, causing the arc-shaped locking block to engage with the corresponding annular groove. The threaded post is then threadedly connected to the corresponding mounting post for fixation, keeping the entire heating barrel suspended. The sealing disc is then opened to release the cuttings, preventing blockages, reducing workload, and improving work efficiency.

[0018] This invention provides an oil-based drill cuttings thermal desorption apparatus. It has the following beneficial effects:

[0019] 1. This invention involves placing oil-based drill cuttings into a storage bin, sealing it with a sealing disc, and then placing the heating barrel into a corresponding hollow wheel. A servo motor is used to wind up the connecting rope, causing the connecting rope to drive the slider to slide within the built-in groove. This causes the slider to move the rack, making the heating barrel roll back and forth on the empty box. Simultaneously, heating is performed by the heating equipment, and the heat energy moves upward through the vent, resulting in more uniform heating of the oil-based drill cuttings and better preventing them from sticking together.

[0020] 2. This invention places the heating barrel on an auxiliary support plate, and with the help of the sliding strip, the sliding plate slides, so that the arc-shaped locking block engages with the corresponding annular groove. At the same time, the threaded column is fixed by threaded connection with the corresponding mounting column, so that the entire heating barrel is kept suspended. Then the sealing plate is opened to discharge the material, avoiding the problem of blockage, reducing the workload, and improving the work efficiency. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a front view of the present invention;

[0023] Figure 3 This is a side view of the present invention;

[0024] Figure 4 This is a bottom view of the present invention;

[0025] Figure 5 This is a partial structural breakdown diagram of the present invention;

[0026] Figure 6 This is a partial structural illustration of the present invention.

[0027] Among them, 1. Empty box; 2. Rolling mechanism; 201. Rack; 202. Groove; 203. Hollow wheel; 204. Heating tank; 205. Annular groove; 206. Storage bin; 207. Sealing plate; 208. Air outlet pipe; 209. Valve; 210. Connecting rod; 211. Mounting rod; 212. Knob; 3. Fixing mechanism; 301. Support frame; 302. Fixing plate; 303. Sliding plate; 304. Sliding... 305. Moving bar; 306. Hollow column; 307. Threaded column; 308. Mounting column; 309. Arc-shaped locking block; 4. Push handle; 4. Drive mechanism; 401. Bow-shaped frame; 402. Built-in groove; 403. Slider; 404. Fixing ring; 405. Servo motor; 406. Connecting rope; 5. Auxiliary support plate; 6. Universal wheel; 7. Controller; 8. Vent; 9. Heating equipment; 10. Stabilizer bar; 11. Rubber pad. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example:

[0030] Please see the appendix Figure 1 - Appendix Figure 6 This invention provides an oil-based drill cuttings thermal desorption device, including an empty box 1, a rolling mechanism 2 on the top of the empty box 1, a fixing mechanism 3 fixedly connected to the rear side of the top of the empty box 1, and a driving mechanism 4 fixedly connected to the front and rear sides of the empty box 1.

[0031] The rolling mechanism 2 includes a groove 202. Grooves 202 are provided on the top left and right sides of the empty box 1. Hollow wheels 203 are rotatably connected to the inner side of the grooves 202. A heating barrel 204 is provided on the adjacent side of the two hollow wheels 203. The left and right ends of the heating barrel 204 are respectively engaged with the corresponding hollow wheels 203. A storage bin 206 is provided on the inner side of the heating barrel 204. A sealing disc 207 is threadedly connected to one side of the heating barrel 204. Two air outlet pipes 208 are connected to the other side of the heating barrel 204. A valve 209 is provided on the air outlet pipe 208. Annular grooves 205 are provided on the left and right ends of the outer wall of the heating barrel 204. A rack 201 is provided on the top left and right sides of the empty box 1 near the middle. The rack 201 is respectively engaged with the corresponding annular groove 205.

[0032] By placing oil-based drill cuttings into the storage bin 206 and sealing it with the sealing disc 207, and then placing the heating barrel 204 into the corresponding hollow wheel 203 and engaging it, the servo motor 405 winds up the connecting rope 406, causing the connecting rope 406 to drive the slider 403 to slide in the built-in groove 402, thereby causing the slider 403 to drive the rack 201 to move, thus causing the heating barrel 204 to roll back and forth on the empty box 1. At the same time, it is heated by the heating device 9. The heat energy moves upward through the vent 8, thereby making the oil-based drill cuttings heated more evenly and better preventing them from sticking together.

[0033] The fixing mechanism 3 includes a support frame 301. The support frame 301 is fixedly connected to the top and rear ends of the empty box 1 on both the left and right sides. A sliding strip 304 is slidably connected to the top of the left support frame 301. A sliding plate 303 is fixedly connected to the top of the sliding strip 304. A fixing plate 302 is fixedly connected to the top of the right support frame 301. An arc-shaped locking block 308 is fixedly connected to the adjacent side of the top of the fixing plate 302 and the sliding plate 303.

[0034] By placing the heating barrel 204 on the auxiliary support plate 5, and with the sliding strip 304 driving the sliding plate 303 to slide, the arc-shaped locking block 308 engages with the corresponding annular groove 205. At the same time, the threaded column 306 is threadedly connected to the corresponding mounting column 307 for fixation, thereby keeping the entire heating barrel 204 suspended. Then, the sealing plate 207 is opened to discharge the material, avoiding blockage problems, reducing workload, and improving work efficiency.

[0035] The drive mechanism 4 includes an arc-shaped frame 401. The arc-shaped frame 401 is fixedly connected to the front, rear, left and right ends of the empty box 1. The outer wall of the arc-shaped frame 401 is provided with an internal groove 402. A slider 403 is slidably connected to the inner side of the internal groove 402. A fixing ring 404 is fixedly connected to the outer wall of the slider 403. A servo motor 405 is fixedly connected to one side of the arc-shaped frame 401. The servo motor 405 is connected to the corresponding fixing ring 404 through a connecting rope 406.

[0036] The servo motor 405 rotates to drive the connecting rope 406 to wind up, thereby causing the slider 403 to drive the rack 201 to move.

[0037] The rolling mechanism 2 also includes a connecting rod 210. The connecting rod 210 is fixedly connected to the adjacent side of the two air outlet pipes 208. The mounting rod 211 is fixedly connected to one side of the sealing disc 207. A knob 212 is fixedly connected to one end of the mounting rod 211.

[0038] The mounting rod 211 facilitates the removal of the entire heating tank 204.

[0039] The fixing mechanism 3 also includes a pusher 309, and the pusher 309 is fixedly connected to the opposite side of the sliding plate 303 and the fixing plate 302.

[0040] The sliding plate 303 is engaged and fixed by pushing the pusher 309.

[0041] The fixing mechanism 3 also includes a hollow column 305. The hollow column 305 is fixedly connected to one side of the bottom of the sliding plate 303 and the fixing plate 302. The hollow column 305 is rotatably connected to a threaded column 306. The mounting column 307 is fixedly connected to the other side of the bottom of the sliding plate 303 and the fixing plate 302. The threaded column 306 is threadedly connected to the corresponding mounting column 307.

[0042] The threaded post 306 is threadedly connected to the corresponding mounting post 307, thereby limiting the sliding plate 303 and the fixed plate 302.

[0043] An auxiliary support plate 5 is fixedly connected to the middle of the rear side of the empty box 1, and casters 6 are fixedly connected to the four corners of the bottom of the empty box 1.

[0044] The entire device is moved by casters 6, and the heating tank 204 is supported by auxiliary support plates 5.

[0045] Multiple air vents 8 are equidistantly arranged on the top of the empty box 1, and a heating device 9 is fixedly connected to the top inner side of the empty box 1.

[0046] The heat generated by the heating device 9 is discharged upward through the vent 8.

[0047] The rear bow-shaped frame 401 is connected by a stabilizing rod 10, and the two ends of the stabilizing rod 10 are fixedly connected to the left and right sides of the interior of the empty box 1, respectively.

[0048] The temperature performance of the rear bow frame 401 is enhanced by the stabilizer bar 10.

[0049] A rubber pad 11 is fixedly connected to the front side of the support frame 301, and a controller 7 is fixedly connected to the right side of the empty box 1. The controller 7 is electrically connected to the servo motor 405 and the heating device 9 respectively.

[0050] Rubber pads 11 are provided for collision protection, and controller 7 is used to control the operation of servo motor 405 and heating device 9 respectively.

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

Claims

1. An oil-based drilling cuttings pyrolysis apparatus comprising an empty tank (1), characterized in that: The top of the empty box (1) is provided with a rolling mechanism (2), the rear side of the top of the empty box (1) is fixedly connected with a fixing mechanism (3), and the front and rear sides of the empty box (1) are fixedly connected with a driving mechanism (4). The rolling mechanism (2) includes a groove (202). Grooves (202) are provided on both the left and right sides of the top of the empty box (1). Hollow wheels (203) are rotatably connected to the inner side of each groove (202). Heating tanks (204) are provided on adjacent sides of the two hollow wheels (203). The left and right ends of the heating tanks (204) are respectively engaged with the corresponding hollow wheels (203). A storage bin (206) is provided inside the heating tanks (204). A sealing disc (207) is threaded onto one side of the barrel (204), and two air outlet pipes (208) are connected to the other side of the heating barrel (204). A valve (209) is provided on the air outlet pipe (208). Annular grooves (205) are provided on both the left and right ends of the outer wall of the heating barrel (204). A rack (201) is provided on both the left and right sides of the top of the empty box (1) near the middle. The rack (201) meshes with the corresponding annular groove (205). The fixing mechanism (3) includes a support frame (301). The support frame (301) is fixedly connected to the top rear end of the empty box (1) on both the left and right sides. A sliding strip (304) is slidably connected to the top of the left support frame (301). A sliding plate (303) is fixedly connected to the top of the sliding strip (304). A fixing plate (302) is fixedly connected to the top of the right support frame (301). An arc-shaped locking block (308) is fixedly connected to the top adjacent side of the fixing plate (302) and the sliding plate (303). The drive mechanism (4) includes an arc frame (401). The arc frame (401) is fixedly connected to the front and rear sides and left and right ends of the empty box (1). The outer wall of the arc frame (401) is provided with an internal groove (402). A slider (403) is slidably connected to the inner side of the internal groove (402). A fixing ring (404) is fixedly connected to the outer wall of the slider (403). A servo motor (405) is fixedly connected to one side of the arc frame (401). The servo motor (405) is connected to the corresponding fixing ring (404) through a connecting rope (406).

2. The oil-based drill cuttings thermal desorption apparatus according to claim 1, characterized in that: The rolling mechanism (2) also includes a connecting rod (210), which is fixedly connected to one side of the two air outlet pipes (208), and a mounting rod (211) is fixedly connected to one side of the sealing disc (207), with a knob (212) fixedly connected to one end of the mounting rod (211).

3. The oil-based drill cuttings thermal desorption apparatus according to claim 1, characterized in that: The fixing mechanism (3) also includes a pusher (309), and the pusher (309) is fixedly connected to the opposite side of the sliding plate (303) and the fixing plate (302).

4. The oil-based drill cuttings thermal desorption apparatus according to claim 1, characterized in that: The fixing mechanism (3) further includes a hollow column (305). The hollow column (305) is fixedly connected to one side of the bottom of the sliding plate (303) and the fixing plate (302). The hollow column (305) is rotatably connected to a threaded column (306). The other side of the bottom of the sliding plate (303) and the fixing plate (302) is fixedly connected to an mounting column (307). The threaded column (306) is threadedly connected to the corresponding mounting column (307).

5. The oil-based drill cuttings thermal desorption apparatus according to claim 1, characterized in that: An auxiliary support plate (5) is fixedly connected to the middle of the rear side of the empty box (1), and casters (6) are fixedly connected to the four corners of the bottom of the empty box (1).

6. The oil-based drill cuttings thermal desorption apparatus according to claim 1, characterized in that: The top of the empty box (1) is provided with multiple air vents (8) at equal intervals, and a heating device (9) is fixedly connected to the top inner side of the empty box (1).

7. The oil-based drill cuttings thermal desorption apparatus according to claim 1, characterized in that: The bow-shaped frame (401) on the rear side is connected by a stabilizing rod (10), and the two ends of the stabilizing rod (10) are respectively fixedly connected to the left and right sides inside the empty box (1).

8. The oil-based drill cuttings thermal desorption apparatus according to claim 1, characterized in that: A rubber pad (11) is fixedly connected to the front side of the support frame (301), and a controller (7) is fixedly connected to the right side of the empty box (1). The controller (7) is electrically connected to the servo motor (405) and the heating device (9) respectively.

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