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Source storage container structure used for small-diameter radioactive instrument

A radioactive, small-diameter technology, applied in the field of source chamber structure, can solve the problem that small-diameter radioactive logging instruments do not have a suitable "radioactive source chamber, etc., and achieve the effect of quick and convenient installation and disassembly, and meet the test needs.

Inactive Publication Date: 2017-05-24
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a source chamber structure for small-diameter radioactive instruments to solve the problem that there is no suitable "radioactive source chamber" available for small-diameter radioactive logging instruments. The minimum diameter can be Φ54mm, and it can also be applied to large-diameter radioactive instruments, with a wide range of applications

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  • Source storage container structure used for small-diameter radioactive instrument
  • Source storage container structure used for small-diameter radioactive instrument

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Embodiment Construction

[0038] In order to meet the requirements of the design indicators of radioactive logging instruments, the source chamber structure can be used in slim holes and radioactive instruments passing through drilling tools. The design indicators reach: high pressure resistance 175Mpa, high temperature 200 ℃. It is necessary to ensure the strength of the source to meet the needs of instrument testing; it is also necessary to achieve the miniaturization of the size; it is also necessary to ensure that the installation and disassembly are fast, convenient, firm and reliable under the premise of ensuring the safety requirements of the country for radioactive sources.

[0039] see figure 1 As shown, the present invention discloses a source chamber structure for small-diameter radioactive instruments, including a source chamber housing 6 with a cross-shaped structure and a sealing cap 1 with a U-shaped structure. The upper part of the cross of the source chamber housing 6 is opened There i...

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Abstract

The invention discloses a source storage container structure used for a small-diameter radioactive instrument. The source storage container structure used for the small-diameter radioactive instrument comprises a source storage container housing of a cross structure and a sealing cap of a U-shaped structure, the cross upper part of the source storage container housing is provided with a groove, a shielding block is arranged in the groove, the shielding block is used for placing a radioactive source, the sealing cap is used for sealing the radioactive source on the shielding block in an reversed placing mode, and the cross lower part of the source storage container housing is provided with a protrusion, and is used for installation and positioning. The source storage container structure used for the small-diameter radioactive instrument can be used for most radioactive logging instruments, and is particularly applied to radioactive instruments with small boreholes and capable of penetrating drilling tools, the advantage is more obvious, and the problem that the domestic small-diameter radioactive instrument has no suitable and usable 'radioactive source storage container' is solved.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of petroleum downhole logging instruments, and is a source chamber structure that can be widely used in radioactive logging instruments. [0003] 【Background technique】 [0004] Radiation logging is a type of logging method based on the nuclear physical properties of rocks and their pore fluids and medium in wells to study downhole geological profiles, find useful mineral deposits such as oil, and study oilfield development and oil well engineering. It can be measured in both open hole and cased hole, and is not limited by the borehole medium, so radioactive logging has its unique advantages. With the continuous development of radioactive logging technology, radioactive logging It occupies an important position in the well industry and is more and more widely used. [0005] The testing mechanism of radioactive logging is a logging method based on various effects produced by the interaction between r...

Claims

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Application Information

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IPC IPC(8): G21F7/00
CPCG21F7/00
Inventor 孙七零石丽云岳爱忠何绪新何子忠李晓罗翔
Owner BC P INC CHINA NAT PETROLEUM CORP
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