Soil sampling device for petroleum exploration

Abstract

The invention provides a soil sampling device for petroleum exploration, and belongs to the technical field of petroleum exploration. The soil sampling device comprises a bracket with circular throughholes at the top and the bottom, and a feeding device and a sampling device which are arranged in the circular through holes. The feeding device comprises a screw rod, a connecting plate fixedly arranged at the bottom end of the screw rod and a first driving device for driving the screw rod to drive the connecting plate to move up and down, and the first driving device is erected at the top of the bracket; the sampling device is connected with the feeding device through a plurality of first supporting columns and comprises a motor plate fixedly connected with the lower ends of the first supporting columns and an inverted cylinder with an opening in one end; the bottom of the cylinder is fixedly connected with the bottom of the motor plate; a rotating shaft, a spiral column fixedly connected with the lower end of the rotating shaft and a second driving device for driving the rotating shaft to rotate are rotationally arranged in the cylinder; spiral blades are fixedly connected to the lower end of the spiral column; a spiral groove body is formed in the cylindrical surface of the spiral column. The device can obtain soil samples with different depths and replaces manual work and isconvenient to sample.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a soil sampling device for petroleum exploration. Background technique [0002] Petroleum exploration In order to find and identify oil and gas resources, it is necessary to detect the underground geological conditions through various exploration methods. In the process of oil exploration, it is necessary to sample and test the soil of the mining area in order to understand the geological conditions of the mining area more clearly. [0003] However, at present, manual sampling is commonly used, and the labor intensity is relatively high; the existing several types of soil sampling devices also have certain defects in the use process: for example, there is no device for destroying the surface soil, so that when faced with a surface with a high hardness Soil cannot be reasonably sampled; in addition, many sampling devices can only take samples from the upper layer, b...

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Problems solved by technology

[0003] However, at present, manual sampling is commonly used, and the labor intensity is relatively high; the existing several types of soil sampling devices also have certain defects in the use process: for example, there is no device for destroying the surface soil, so that when faced with a surface with a high hardness Soil cannot be reasonably sampled; in addition, many sampling devices can only take samples from the upper layer and cannot take samples from the lower layer, and it is necessary to combine soil samples at different depths to obtain more reliable and accurate survey results

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