Circulating tank detachable drilling fluid module cooling device

Abstract

The invention discloses a circulating tank detachable drilling fluid module cooling device which comprises a water pump pry, the water pump pry is connected with a cooling water tower through a circulating pipe fitting, and the water pump pry is connected with a heat exchange system through a hose. The heat exchange system is directly integrated with the circulating tank, so that the loss of energy sucked into and pumped back by the drilling fluid is reduced, the cost is low, and energy is saved; meanwhile, cooling water instead of drilling fluid flows in the heat exchange pipe, so that the troubles of scaling, blockage and cleaning are reduced, and the inner wall of the pipeline does not need to be cleaned, a gasket does not need to be replaced and the like; compared with conventional cooling equipment for sucking out drilling fluid, the equipment is small in size, unit modules of the cooling water tower can be increased or decreased according to heat exchange power, and the cooling water tower is a mature product, can be efficiently configured and is convenient to install and place; equipment units are connected through hoses, a large-drift-diameter drilling fluid hard pipe does not need to be erected, and connection is efficient, flexible and convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of oilfield drilling and development equipment, and particularly relates to a circulating tank dismountable drilling fluid module cooling device. Background Technique

[0002] In recent years, with the increase in energy demand and the development of oil drilling technology, deep wells, ultra-deep wells and ten-thousand-meter drilling have become important development trends in drilling. During the drilling process, the formation temperature will increase with the increase in depth, and the highest bottom-hole temperature can reach 200°C - 250°C. Therefore, it is very necessary to cool the drilling fluid during the drilling process to make it reach an appropriate temperature.

[0003] Currently, the existing equipment cools the drilling fluid by means of heat exchange, and there are certain differences in the overall shape, heat dissipation power, etc. of the equipment. The current conventional method is to suck the drilling fluid from the circulating tank into the ground heat exchange equipment with a sand pump. The drilling fluid and cooling water in the heat exchange equipment exchange heat in the heat exchanger, and then the cooled drilling fluid is pumped into the circulating tank to achieve the cooling of the drilling fluid. This cooling mode not only consumes a large amount of energy loss for sucking and discharging the drilling fluid, but also for large-scale drilling, the cooling equipment has a large volume, the unit equipment occupies a large area, the heat exchanger has a large volume, and the drilling fluid has many impurities and high viscosity, which is easy to block. It is difficult to arrange the connection of large-diameter rigid pipes, and it is necessary to clean and maintain the heat exchanger at the well site, resulting in a large amount of maintenance work. Summary of the Invention

[0004] The purpose of the present invention is to provide a circulating tank dismountable drilling fluid module cooling device, which solves the problem of system pipeline blockage caused by impurities and viscosity during the cooling of drilling fluid in the prior art.

[0005] The technical solution adopted by the present invention is: a circulating tank dismountable drilling fluid module cooling device, which includes a water pump skid. The water pump skid is connected to a cooling water tower through a circulating pipe fitting, and the water pump skid is respectively connected to a heat exchange system through a hose.

[0006] The characteristics of the present invention also lie in that

[0007] The heat exchange system includes a vibrating screen under heat exchanger and a conventional tank heat exchanger. The vibrating screen under heat exchanger is connected to the water pump skid through a hose, and the conventional tank heat exchanger is also connected to the water pump skid through a hose.

[0008] The water pump skid includes a water inlet pipe. The water inlet pipe is connected to the circulating pipe fitting through a water inlet flange. The water outlet end of the water inlet pipe is connected to a water pump. The water outlet end of the water pump is connected to a water supply main pipe. The pipe body of the water supply main pipe is connected with a first water inlet joint and a second water inlet joint. The first water inlet joint and the second water inlet joint are respectively connected to the vibrating screen under heat exchanger and the conventional tank heat exchanger through a hose;

[0009] It also includes a control box and a manifold. The control box is connected to the motor of the cooling water tower through a cable, and the manifold is connected to the heat exchanger under the vibrating screen and the heat exchanger in the conventional tank through a reflux component.

[0010] The reflux assembly includes a plurality of return joints uniformly connected to the manifold body, each return joint is connected to a return pipe, and the ends of the return pipe away from the return joints are respectively connected to the heat exchanger under the vibrating screen and the heat exchanger in the conventional tank.

[0011] A conventional in-tank heat exchanger includes a first water inlet main pipe and a first water return main pipe, the first water inlet port of the first water inlet main pipe is connected to the end of a hose, a plurality of first cooling single pipes are connected between the first water inlet main pipe and the first water return main pipe, the pipe bodies of the first water inlet main pipe and the first water return main pipe are connected to a first mounting plate, the first cooling single pipe is connected to the first mounting plate through a plurality of evenly arranged spaced support columns, and the first water return port of the first water return main pipe is connected to the end of the return pipe.

[0012] The heat exchanger under the vibrating screen includes a second mounting plate, a second water inlet main pipe and a second water return main pipe are connected to the second mounting plate, a plurality of second cooling single pipes are connected between the second water inlet main pipe and the second water return main pipe, a second water inlet of the second water inlet main pipe is connected to the end of the hose, and a second water return port of the second water return main pipe is connected to the end of the return pipe.

[0013] The circulation pipe includes a first circulation pipe, one end of which is connected to the water inlet flange, and the other end of the first circulation pipe is connected to the cooling water tower. The cooling water tower is also connected to the second circulation pipe, and the end of the second circulation pipe away from the cooling water tower is connected to the manifold through the return flange.

[0014] The beneficial effects of the present invention are as follows: the heat exchange system of the present invention is directly integrated with the circulation tank, which reduces the loss of energy of the drilling fluid suction pump, is low in cost and energy-saving; at the same time, cooling water flows in the heat exchange tube instead of drilling fluid, which reduces the trouble of cleaning scaling and blockage, and does not require cleaning the inner wall of the pipe and replacing gaskets, etc.; the equipment is small in size compared to conventional cooling equipment that sucks out drilling fluid, and the cooling water tower can increase or decrease unit modules according to the heat exchange power. It is a mature product, can be efficiently configured, and is easy to install and place; the equipment units are connected by hoses, and there is no need to set up large-diameter drilling fluid hard pipes, and the connection is efficient, flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the layout structure of the circulating tank detachable drilling fluid module cooling device of the present invention;

[0016] Figure 2 This is a working principle diagram of the circulating tank detachable drilling fluid module cooling device of the present invention;

[0017] Figure 3It is a schematic diagram of the internal structure of a water pump skid in a circulating tank detachable drilling fluid module cooling device of the present invention;

[0018] Figure 4 It is a schematic diagram of the internal structure of the heat exchanger in the tank in the circulating tank detachable drilling fluid module cooling device of the present invention;

[0019] Figure 5 This is a front view of the heat exchanger in the tank of the detachable drilling fluid module cooling device of the circulating tank of the present invention;

[0020] Figure 6 It is a schematic diagram of the internal structure of the heat exchanger under the vibrating screen in the circulating tank detachable drilling fluid module cooling device of the present invention;

[0021] Figure 7 It is a front view of the heat exchanger under the vibrating screen in the circulating tank detachable drilling fluid module cooling device of the present invention.

[0022] In the figure: 1. Drilling fluid tank No. 1, 2. Heat exchanger under vibrating screen, 3. Drilling fluid tank No. 2, 4. Heat exchanger in conventional tank, 5. Drilling fluid tank No. 3, 6. Drilling fluid tank No. 4, 7. Drilling fluid tank No. 5, 8. Water pump skid, 9. Cooling tower, 10. Hose, 11. First circulation pipe, 12. Second circulation pipe, 301. Water pump, 302. Control box, 303. Manifold, 304. Return water joint, 305. Return water flange, 306. Inlet flange, 307. Water supply main, 308. First water inlet joint, 309. Second water inlet joint, 310. Water inlet pipe, 311. Water return pipe, 401. First water inlet, 402. First mounting plate, 403. First water inlet main pipe, 404. First cooling single pipe, 405. First water return port, 406. Spacer support column, 407. First water return main pipe, 501. Second mounting plate, 502. Second water inlet, 503. Second water inlet main pipe, 504. Second cooling single pipe, 505. Second water return main pipe, 506. Second water return port. Specific implementation method:

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The circulating tank detachable drilling fluid module cooling device of the present invention is as follows: Figure 1 As shown, it includes a water pump skid 8, which is connected to a cooling water tower 9 through a circulation pipe fitting, and the water pump skid 8 is connected to a heat exchange system through a hose 10. The heat exchange system is arranged in a corresponding circulation tank, and the heat exchange system is integrated with the circulation tank, which reduces the loss of energy of the drilling fluid suction pump, is low in cost and energy-saving, and at the same time, what flows in the heat exchange system is the cooling water in the cooling water tower 9, not the drilling fluid, which reduces the trouble of cleaning scaling and blockage, and does not need to clean the inner wall of the pipeline and replace the gasket. Compared with the conventional cooling equipment that sucks out the drilling fluid, it is small in size.

[0025] As Figure 2 shown, the water pump in the water pump skid 8 sucks cooling water from 301 at the bottom of the cooling water tower 9. The cooling water flows through the hose 10 to the heat exchanger under the vibrating screen 2 and the heat exchanger in the conventional tank 4. Since there is a centrifugal pump in the circulation tank, the drilling fluid has a certain fluidity in the circulation system. The flowing drilling fluid and the cooling water exchange heat in the heat exchanger. The heated cooling water flows back through the water pump skid 8 and converges into the cooling water tower 9. The cooling water tower 9 cools the cooling water by air-water cooling. The cooled cooling water flows to the bottom of the cooling water tower 9, and then enters the next cycle through the water pump 301 in the water pump skid 8.

[0026] Example 1

[0027] The heat exchange system includes the heat exchanger under the vibrating screen 2 and the heat exchanger in the conventional tank 4. The heat exchanger under the vibrating screen 2 is connected to the water pump skid 8 through the hose 10, and the heat exchanger in the conventional tank 4 is also connected to the water pump skid 8 through the hose 10. Cut and open the top surfaces of the No. 1 drilling fluid tank 1, No. 2 drilling fluid tank 3, No. 3 drilling fluid tank 5, No. 4 drilling fluid tank 6, and No. 5 drilling fluid tank 7. The length and width of the opening are less than 100 mm of the installation surface. Install the heat exchanger under the vibrating screen 2 on the lower bottom surface of the vibrating screen in the No. 1 drilling fluid tank 1. The heat exchangers in the conventional tank 4 are installed on the upper surfaces of the No. 2 drilling fluid tank 3, No. 3 drilling fluid tank 5, No. 4 drilling fluid tank 6, and No. 5 drilling fluid tank 7. The heat exchanger under the vibrating screen 2 and the heat exchangers in the conventional tank 4 respectively exchange heat and cool the drilling fluid in the 5 circulation tanks.

[0028] Example 2

[0029] As Figure 3 shown, the water pump skid 8 includes a water inlet pipe 310. The water inlet pipe 310 is connected to the circulation pipe fitting through the water inlet flange 306. The water outlet end of the water inlet pipe 310 is connected with a water pump 301. The water outlet end of the water pump 301 is connected with a water supply main pipe 307. The pipe body of the water supply main pipe 307 is connected with a first water inlet joint 309 and a second water inlet joint 308. The first water inlet joint 309 and the second water inlet joint 308 are respectively connected to the heat exchanger under the vibrating screen 2 and the heat exchanger in the conventional tank 4 through the hose 10; the hose 10 is a 2-inch hose.

[0030] It also includes a control box 302 and a manifold 303. The control box 302 is connected to the motor of the cooling water tower 9 through a cable, and the manifold 303 is connected to the heat exchanger 2 under the vibrating screen and the heat exchanger 4 in the conventional tank through a reflux assembly. The control box 302 is connected to the VFD room at the well site. The cooling water in the cooling water tower 9 is pumped in by a water pump 301, enters the first water inlet joint 309 and the second water inlet joint 308 from the water supply main 307, and then enters the heat exchanger 2 under the vibrating screen and the heat exchanger 4 in the conventional tank through a hose 10. After exchanging heat with the drilling fluid, the cooling water enters the manifold 303 through the reflux assembly, and flows back to the cooling water tower 9 through the circulation pipe fittings for cooling again.

[0031] The reflux assembly includes a plurality of return water joints 304 uniformly connected to the pipe body of the manifold 303, each of which is connected to a return water pipe 311, and the ends of the return water pipe 311 away from the return water joint 304 are respectively connected to the heat exchanger 2 under the vibrating screen and the heat exchanger 4 in the conventional tank. Each return water pipe 311 is connected to a heat exchanger 2 under the vibrating screen or a heat exchanger 4 in the conventional tank, and the return water pipe 311 is also a 2-inch hose. The cooling water after heat exchange from the heat exchanger 2 under the vibrating screen and the heat exchanger 4 in the conventional tank enters the manifold 303 through the return water pipe 311.

[0032] Example 3

[0033] like Figures 4 - 5 As shown, the conventional in-tank heat exchanger 4 includes a first water inlet pipe 403 and a first water return pipe 407. The first water inlet port 401 of the first water inlet pipe 403 is connected to the end of the hose 10. A plurality of first cooling single pipes 404 are connected between the first water inlet pipe 403 and the first water return pipe 407. The pipe bodies of the first water inlet pipe 403 and the first water return pipe 407 are connected to the first mounting plate 402. The first cooling single pipe 404 is connected to the first mounting plate 402 through a plurality of evenly arranged spaced support columns 406. The first water return port 405 of the first water return pipe 407 is connected to the end of the water return pipe 311. The cooling water pumped in by the water pump skid 8 passes through the first water inlet pipe 403, the first cooling single pipe 404 and the first water return pipe 407 in sequence, and then flows out from the first water return port 405. The spaced support columns 406 and the first mounting plate 402 play a fixing role.

[0034] Example 4

[0035] like Figures 6 - 7As shown in the figure, the heat exchanger 2 under the vibrating screen includes a second mounting plate 501. A second main water inlet pipe 503 and a second main water return pipe 505 are connected to the second mounting plate 501. A number of second cooling single pipes 504 are connected between the second main water inlet pipe 503 and the second main water return pipe 505. The second water inlet 502 of the second main water inlet pipe 503 is connected to the end of the hose 10, and the second water return port 506 of the second main water return pipe 505 is connected to the end of the water return pipe 311. The cooling water pumped by the pump skid 8 passes through the second main water inlet pipe 503, the second cooling single pipes 504 and the second main water return pipe 505 in sequence, and then flows out from the second water return port 506.

[0036] Embodiment 5

[0037] The circulating pipe fittings include a first circulating pipe 11. One end of the first circulating pipe 11 is connected to the inlet flange 306, and the other end of the first circulating pipe 11 is connected to the cooling water tower 9. The cooling water tower 9 is also connected with a second circulating pipe 12. The end of the second circulating pipe 12 far away from the cooling water tower 9 is connected to the confluence pipe 303 through the return water flange 305. The first circulating pipe 11 and the second circulating pipe 12 are 4-inch hoses. The cooling water in the cooling water tower 9 enters the water inlet pipe 310 through the first circulating pipe 11. The heat-exchanged cooling water flows through the second circulating pipe 12 from the confluence pipe 303, and finally returns to the cooling water tower 9.

[0038] The working principle of the cooling device for the circulating tank dismountable drilling fluid module of the present invention is as follows:

[0039] The cooling water in the cooling water tower 9 is pumped in through the first circulating pipe 11 by the water pump 301, enters the first water inlet joint 309 and the second water inlet joint 308 from the water supply main pipe 307, and then enters the heat exchanger 2 under the vibrating screen and the heat exchanger 4 in the conventional tank through the hose 10. Since there is a centrifugal pump in the circulating tank, the drilling fluid has a certain fluidity in the circulating system. The flowing drilling fluid and the cooling water exchange heat in the heat exchanger. The heat-exchanged cooling water flows back into the confluence pipe 303, then flows through the second circulating pipe 12 from the confluence pipe 303, and finally returns to the cooling water tower 9. The cooling water tower 9 conducts air-water cooling on the cooling water. The cooled cooling water flows to the bottom of the cooling water tower 9, and then enters the next cycle through the water pump 301. The entire device needs to match the heat dissipation of the cooling water tower 9 and the drilling fluid, and realizes heat conservation by increasing the number of cooling water towers 9.

[0040] For the cooling device for the circulating tank dismountable drilling fluid module of the present invention, by changing the water and drilling fluid channels of the existing cooling device, the intensification and simplification of the cooling device are realized. Since the cooling water flows in the heat exchanger pipeline, the risk of blockage is reduced. At the same time, there are only the pump skid and the cooling water tower outside the tank, with a small floor area, flexible layout and strong operability. It can flexibly layout and operate for different drilling fluid cooling powers, different well sites and circulating systems, and the operation energy saving is simple.

Claims

1. Circulating tank disassembly and assembly type drilling fluid module cooling device, Characterized in that, It includes a water pump skid (8), the water pump skid (8) is connected with a cooling water tower (9) through a circulating pipe fitting, and the water pump skid (8) is respectively connected with a heat exchange system through a hose (10).

2. The circulating tank disassembly and assembly type drilling fluid module cooling device according to claim 1, Characterized in that, The heat exchange system includes an under-vibrating screen heat exchanger (2) and an in-conventional tank heat exchanger (4), the under-vibrating screen heat exchanger (2) is connected with the water pump skid (8) through a hose (10), and the in-conventional tank heat exchanger (4) is also connected with the water pump skid (8) through a hose (10).

3. The circulating tank disassembly and assembly type drilling fluid module cooling device according to claim 2, Characterized in that, The water pump skid (8) includes a water inlet pipe (310), the water inlet pipe (310) is connected with the circulating pipe fitting through a water inlet flange (306), the water outlet end of the water inlet pipe (310) is connected with a water pump (301), the water outlet end of the water pump (301) is connected with a water supply main pipe (307), the pipe body of the water supply main pipe (307) is connected with a first water inlet joint (309) and a second water inlet joint (308), and the first water inlet joint (309) and the second water inlet joint (308) are respectively connected with the under-vibrating screen heat exchanger (2) and the in-conventional tank heat exchanger (4) through a hose (10); It also includes a control box (302) and a manifold (303), the control box (302) is connected with the motor of the cooling water tower (9) through a cable, and the manifold (303) is connected with the under-vibrating screen heat exchanger (2) and the in-conventional tank heat exchanger (4) through a return assembly.

4. The circulating tank disassembly and assembly type drilling fluid module cooling device according to claim 3, Characterized in that, The return assembly includes a plurality of water return joints (304) evenly connected to the pipe body of the manifold (303), each water return joint (304) is connected with a water return pipe (311), and the end parts of the water return pipes (311) far away from the water return joints (304) are respectively connected with the under-vibrating screen heat exchanger (2) and the in-conventional tank heat exchanger (4).

5. The circulating tank disassembly and assembly type drilling fluid module cooling device according to claim 4, Characterized in that, The in-conventional tank heat exchanger (4) includes a first water inlet main pipe (403) and a first water return main pipe (407), the first water inlet (401) of the first water inlet main pipe (403) is connected with the end part of the hose (10), a plurality of first cooling single pipes (404) are communicated between the first water inlet main pipe (403) and the first water return main pipe (407), the pipe bodies of the first water inlet main pipe (403) and the first water return main pipe (407) are connected with a first mounting plate (402), the first cooling single pipes (404) are connected with the first mounting plate (402) through a plurality of evenly arranged air separation support columns (406), and the first water return port (405) of the first water return main pipe (407) is connected with the end part of the water return pipe (311).

6. The circulating tank disassembly and assembly type drilling fluid module cooling device according to claim 4, It is characterized in that the vibrating screen lower heat exchanger (2) includes a second mounting plate (501), a second main water inlet pipe (503) and a second main water return pipe (505) are connected to the second mounting plate (501), a plurality of second cooling single pipes (504) are communicated between the second main water inlet pipe (503) and the second main water return pipe (505), a second water inlet (502) of the second main water inlet pipe (503) is connected to an end of a hose (10), and a second water return port (506) of the second main water return pipe (505) is connected to an end of a water return pipe (311).

7. The circulating tank dismountable drilling fluid module cooling device according to claim 3 It is characterized in that the circulating pipe fittings include a first circulating pipe (11), one end of the first circulating pipe (11) is connected to a water inlet flange (306), the other end of the first circulating pipe (11) is connected to a cooling water tower (9), the cooling water tower (9) is further connected to a second circulating pipe (12), and an end of the second circulating pipe (12) far from the cooling water tower (9) is connected to a confluence pipe (303) through a water return flange (305).

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