Logging bionic pollution reducing oil-gas separation device

Abstract

The invention discloses a logging bionic pollution reducing oil-gas separation device, belonging to the technical field of oil-gas exploration. The device consists of a flow stabilizing cover, a degassing cover, a spacer and a rear cover, wherein the flow stabilizing cover comprises a regular octagonal outer ring and 8 protruding hollow elastic sheets and is fixed on the device body through 4 legs; the degassing cover is composed of a spherical crown-shaped disc surface and a semitransparent membrane degassing unit; the semitransparent membrane degassing unit is arranged on the spherical crown-shaped disc surface by referring to the phyllotaxy theory according to the Fibonacci spiral law, and comprises a tooth-shaped semitransparent membrane and a flexible annular base while the inflow angle of the semitransparent membrane can be passively changed; and the rear cover is provided with 6 carrier gas input pipelines and 1 sample gas output pipeline and fixed with the degassing cover through screws. In the invention, the impact of drilling fluid against the degassing unit can be effectively relieved; and meanwhile, through the unique structure and arrangement way of the semitransparent degassing unit, the distribution uniformity of drilling fluid on the degassing cover can be effectively improved, the deposition of drilling fluid particles is remarkably reduced, and thus the degassing efficiency and logging accuracy are improved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploration, in particular to a bionic pollution reduction oil and gas separation device for mud logging. Background technique [0002] At present, degassing methods using semi-permeable membrane degassing technology in the degassing process of mud logging work are still scarce, and the form of oil-gas separation is relatively simple, and there are very few devices aimed at changing the structure and covering mode of semi-permeable membranes to improve oil-gas separation performance. [0003] The oil-gas separation device based on semi-permeable membrane degassing technology is limited by the pressure resistance and impact resistance of the semi-permeable membrane, and its service life is short, resulting in high cost of use. [0004] The working environment of the oil-gas separation device is relatively harsh, and the drilling fluid contains a large amount of impurities such as sediment, whic...

AI Technical Summary

Problems solved by technology

[0002] At present, degassing methods using semi-permeable membrane degassing technology in the degassing process of mud logging work are still scarce, and the form of oil-gas separation is relatively simple, and there are very few devices aimed at changing the structure and covering method of semi-permeable membranes to improve oil-gas separation performance

[0003] The oil-gas separation device based on semi-permeable membrane degassing technology is limited by the pressure resistance and impact resistance of the semi-permeable membrane, and its service life is short, resulting in high cost of use

[0004] The working environment of the oil-gas separation device is relatively harsh, and the drilling fluid contains a large amount of impurities such as sediment, which are easily deposited on the surface of the semi-permeable membrane, thus affecting the efficiency and accuracy of the oil-gas separation device

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