Drilling method and device combining thermal energy and mechanical energy
A mechanical energy and drilling technology, applied in the application of thermal energy drilling, drilling equipment, drill bits, etc., can solve problems such as the inability of supporting equipment to achieve industrial application, speed up the exploration and development of oil and gas resources, and the effect of mechanical penetration rate is not significant enough to reduce drilling costs. , The effect of shortening the well construction period and easy trajectory control
Active Publication Date: 2016-03-16
SINOPEC OILFIELD EQUIP CORP +1
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Problems solved by technology
At present, the drilling depth of the drill bit used for drilling has been limited to about 12,000 meters, and it has been impossible to increase the drilling depth.
[0005] To sum up, conventional mechanical rock-breaking tools are not effective enough to increase the ROP, and the supporting equipment of the new rock-breaking technology cannot be applied industrially. It is urgent to develop a mechanical-thermal comprehensive rock-breaking method and device, which can The method of rock breaking improves the drilling speed, saves drilling costs, and is of great significance for accelerating the exploration and development of oil and gas resources
Method used
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[0037] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.
[0038] Such as figure 1 , figure 2 As shown, the drilling device combining thermal energy and mechanical energy of the present invention includes a fuel tank 1, a dual-channel joint 6, a compressor 10, a drill bit 13 and a drill pipe 9, and the two ends of the drill pipe 9 are respectively connected to the dual-channel joint 6 and the drill bit 13.
[0039] The dual-channel joint 6 includes a housing 38 and a fuel channel and an air channel arranged in the housing 38 , the fuel tank 1 is connected to the fuel channel through the fuel line 5 , and the compressor 10 is connected to the air channel through the air line 7 . The inner tube and the outer tube of the drill pipe 9 are respectively connected with the fuel chan...
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The invention relates to a drilling method and device combining thermal energy and mechanical energy. The device includes a fuel tank (1), a dual-channel joint (6), a compressor (10), a drill bit (13) and a drill pipe (9). Both ends of the drill pipe (9) are respectively connected to the dual-channel joint (6) and the drill bit (13); the dual-channel joint (6) includes a casing (38) and is arranged in the casing (38) The fuel channel and the air channel, the fuel tank (1) is connected to the fuel channel, the compressor (10) is connected to the air channel; the drill bit (13) includes a drill bit body (18), set on The upper joint (16) at the upper end of the drill body (18) and the drill cutting teeth (21) arranged at the lower end of the drill body (18). The invention can realize the combination of combustion heat energy and mechanical energy to break rocks, and significantly improve the efficiency of rock breaking; in addition, the combustion heat energy can also be used to ceramicize the well wall to form a smooth and hard well wall, and even casing cementing can be omitted, which saves a lot Drilling costs.
Description
technical field [0001] The invention relates to the field of well drilling, and more specifically relates to a drilling method and device combining thermal energy and mechanical energy. Background technique [0002] The drill bit is a tool that directly contacts the rock during the drilling process and breaks the rock through cutting and stamping. At present, mechanical energy is widely used in drilling engineering to break rocks. The drill bits used mainly include: roller cone bits, PDC bits, diamond bits, etc. The field application shows that the rock-breaking efficiency of the roller cone bit is low, and the footage of a single bit is small, which is prone to downhole accidents such as roller cone sticking; the PDC bit wears fast and is difficult to penetrate; the diamond bit also has slow drilling speed The problem of short service life has seriously affected the speed of oil and gas exploration and development. [0003] In order to improve drilling efficiency, petrole...
Claims
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IPC IPC(8): E21B7/14E21B10/00E21B21/16
Inventor 高文金张正禄刘运荣李红胡琼任小玲蒋洪亮李新年王四虎丁永伟
Owner SINOPEC OILFIELD EQUIP CORP