High temperature resistant measuring while drilling device and manufacturing method thereof
A measurement-while-drilling and high-temperature-resistant technology, which is applied in the directions of measurement, earthwork drilling, wellbore/well components, etc., can solve the problems of limited space, the structure of the thermos bottle cannot meet the use, and the thickness is large, so as to achieve the effect of saving space
Active Publication Date: 2022-07-22
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0005] However, the thermos needs a two-layer structure, and a vacuum layer is needed in the middle, and its thickness is relatively large.
However, the general measurement-while-drilling instrument is inside the drill pipe, and the space is limited.
Therefore, the structure of the thermos bottle mentioned above can no longer meet the needs of use, and a better high-temperature-resistant measurement-while-drilling device should be designed and applied to high-temperature wells.
Method used
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[0039] The present invention will be further described below with reference to the accompanying drawings.
[0040] figure 1 One embodiment of a high temperature measurement-while-drilling device 100 according to the present invention is shown. like figure 1 As shown, the high temperature resistant MWD device 100 includes a carrier 3 , a MWD circuit assembly 1 , a thermal insulation protection layer 2 and a stabilization layer (not shown in the figure). The carrier 3 is used to carry the circuit assembly 1 for measurement while drilling. In different embodiments, the carrier body 3 may be configured in different structures according to different working conditions, for example, a cylindrical shape, a box type, etc., and another carrier body 3' will be mentioned in detail below. The circuit assembly 1 is arranged in the inner cavity of the carrier body 3 . The thermal insulation protection layer 2 is arranged on the carrier 3 to play a role of thermal insulation, prevent hea...
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Abstract
The present invention provides a high temperature resistant MWD device and a manufacturing method thereof. The high temperature resistant MWD device includes a carrier, a MWD circuit component disposed in the inner cavity of the carrier, and a wrapping device. The thermal insulation protection layer on the wall of the carrier body and the stable layer arranged on the outer side of the thermal insulation protection layer are provided on the carrier body to better isolate the heat of the stratum and provide a circuit for the circuit. The module provides a normal working ambient temperature, avoids the introduction of thermos and other structures, and can better save space to better adapt to high temperature or ultra-high temperature deep wells and small wells.
Description
technical field [0001] The invention relates to the technical field of downhole in the development process of hot dry rock, oil and natural gas, geothermal and the like, in particular to a high temperature resistant measurement while drilling device and a manufacturing method thereof. Background technique [0002] With the deepening of oil and gas development, deep and ultra-deep wells are increasing. With the change of the geothermal gradient, the temperature in the wellbore is higher, especially when the well depth is about 7000 meters, the temperature in some wellbore has exceeded 150 degrees Celsius, and the well depth reaches 8000 meters, and the temperature in some wellbore is even higher over 175 degrees Celsius. [0003] However, the resistance temperature of electronic components, sensors, etc. in existing MWD tools is generally below 175 degrees Celsius. Therefore, such electronic components and the like cannot work normally in a high temperature wellbore above 1...
Claims
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IPC IPC(8): E21B47/12C09D7/61
CPCE21B47/12C09D7/61C09D7/70
Inventor 倪卫宁胡群爱曾义金
Owner CHINA PETROLEUM & CHEM CORP