Drill rod and drilling fluid temperature control system
A temperature control system and drilling fluid technology, applied in the direction of drill pipe, drilling equipment, drilling pipe, etc., can solve the problems of sensitivity drop, drilling fluid performance drop, downhole instrument instability, etc., to avoid easy damage
Pending Publication Date: 2022-03-29
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology
[0005] The main purpose of the present invention is to provide a drill pipe and drilling fluid temperature control system to solve the problems in the prior art that the performance of drilling fluid caused by high temperature downhole in oil and gas production, the instability of downhole instruments and the decrease in sensitivity
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[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0023] In order to solve the problems in the prior art of the performance degradation of drilling fluid caused by the high temperature in the downhole of oil production, the instability of downhole instruments and the decrease in sensitivity, the present invention provides a temperature control system for drill pipes and drilling fluid.
[0024] Please refer to figure 1 and figure 2 , a drill pipe used for producing oil wells, the drill pipe includes a plurality of pipe sections 10 connected in sequence, wherein the pipe section 10 includes: a first pipe body 11, a second pipe body 12 and a thermal insulation assembly 20. The first pipe body 11 is sleeved on the outside of the second pipe bo...
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The invention provides a drill rod and a drilling fluid temperature control system, the drill rod is used for exploiting an oil and gas well, the drill rod comprises a plurality of rod sections, the plurality of rod sections are connected in sequence, each rod section comprises a first pipe body and a second pipe body, the first pipe body is arranged on the outer side of the second pipe body in a sleeving mode, and a cooling channel is arranged on the inner side of the second pipe body and used for transmitting cooling liquid; the heat insulation assembly is arranged between the first pipe body and the second pipe body to isolate heat transfer between the first pipe body and the second pipe body, a heat insulation groove is formed in the inner side of the first pipe body and / or the outer side of the second pipe body, the heat insulation assembly is arranged in the heat insulation groove, and the first pipe body is provided with a first end and a second end; a positioning step is arranged in the first end of the first pipe body. According to the drill rod and the drilling fluid temperature control system, the problems that in the prior art, the drilling fluid performance is reduced, downhole instruments are unstable, and the sensitivity is reduced due to the high temperature in an oil extraction well are solved.
Description
technical field [0001] The invention relates to the technical field of oilfield exploitation, in particular to a temperature control system for a drill pipe and drilling fluid. Background technique [0002] Drilling fluid is a circulating fluid used for drilling, which is the blood of drilling and plays a very important role in the drilling process. The circulation process of drilling fluid is as follows: the mud pump pumps the prepared drilling fluid from the mud tank into the well, and the drilling fluid circulates to the bottom of the well to cool the drill bit at the bottom of the well. After cooling, it flows out from the drill bit. The main function of the drilling fluid is There are: (1) cleaning the bottom of the well, carrying cuttings, avoiding repeated cutting of the drill bit, reducing wear and improving efficiency; (2) cooling and lubricating the downhole tools such as the drill bit, reducing the downhole circulating temperature, reducing the wear of the drill t...
Claims
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Login to View More IPC IPC(8): E21B17/00E21B21/00E21B21/06
CPCE21B17/00E21B21/00E21B21/06
Inventor 韩兴方太安左卫东杨晓光周志雄吴昌亮马英武秋冬
Owner BC P INC CHINA NAT PETROLEUM CORP