Pushing and setting device

Abstract

The invention provides a pushing and setting device for oil exploitation. The pushing and setting device comprises a main substrate (41); one or more than one group of pushing arms are arranged at the periphery of the main substrate; each group of pushing arms are of a double parallelogram structure; a front pushing arm (14), a sealing probe body (15), an auxiliary pushing arm (20) and the main substrate form a first parallelogram structure; the front pushing arm (14) is respectively connected with the sealing probe body (15) and the main substrate through connecting shafts (11); two ends of the auxiliary pushing arm (20) are respectively connected with the sealing probe body (15) and the main substrate through rotating shafts; a back pushing arm (23), the sealing probe body (15), a holeless auxiliary arm (65) and the main substrate form a second parallelogram structure through connecting shafts. The pushing and setting device with the structure can be in contact with the wall of a well uniformly and can also control the force for pushing the wall of the well.

Description

technical field [0001] The invention relates to a petroleum exploration tool, in particular to a pushing and setting device for exploring the internal fluid pressure of formations and obtaining formation fluid samples. Background technique [0002] In the process of oil development, it is necessary to measure the fluid pressure inside the formation and take samples of the formation fluid to accurately determine the position of the oil layer and facilitate oil extraction. [0003] At present, the formation pressure measurement and fluid sampling tools that appear on the market use piston-cylinder probes. The biggest disadvantage of this structure is that the contact area between the probe and the formation is too small, and the instrument cannot be pulled directly, and it is easy to get stuck in the oil well. At the same time, the probe with this structure cannot achieve uniform contact with the well wall along the radial direction, nor can it control the force of pushing aga...

AI Technical Summary

Problems solved by technology

[0003] At present, the formation pressure measurement and fluid sampling tools that appear on the market use piston-cylinder probes. The biggest disadvantage of this structure is that the contact area between the probe and the formation is too small, and the instrument cannot be pulled directly, and it is easy to get stuck in the oil well. At the same time, the probe with this structure cannot achieve uniform contact with the well wall along the radial direction, nor can it control the force of pushing against the well wall

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