Fluid separating device, shaft structure and method for producing petroleum or natural gas

Abstract

The invention relates to the technical field of oil and gas exploitation, and discloses a fluid separating device, a shaft structure and a method for producing petroleum or natural gas. The fluid separating device comprises a barrel, a plurality of separators, a first elastic component, a first guide device and a second guide device. The separators are arranged around the barrel; the first elastic component is arranged between the separators and the barrel, and elastic force can be outwardly applied to the separators by the first elastic component along the radial direction of the barrel; the first guide device axially penetrates the barrel and is structured in such a manner that the first guide device can move back and forth between an expansion location and a contraction location along the axial direction of the barrel; the second guide device penetrates the barrel, one end of the second guide device is connected with the separators, and the other end of the second guide device is slidably matched with the first guide device by a matched surface. The fluid separating device, the shaft structure and the method have the advantages that frictional force between the separators and the inner wall of a shaft be eliminated when the fluid separating device descends, and the fluid separating device further can quickly descend to return shaft bottoms.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploitation, in particular to a fluid separation device, a shaft structure and a method for producing oil or natural gas. Background technique [0002] During the development of oil and gas wells, when the oil or natural gas production in the well is low and the pressure in the well is insufficient, a large amount of liquid cannot be lifted to the surface, which will form a certain degree of liquid accumulation at the bottom of the well, which will reduce the production capacity of the oil and gas well, and even cause oil and gas The well stopped blowing. [0003] A related art known to the inventor provides a fluid separation device. A plurality of partitions are arranged on the periphery of the fluid partition device, and these partitions are always in contact with the inner wall of the hoistway under the action of the elastic member to form a seal. In this way, the pressure generated by ...

AI Technical Summary

Problems solved by technology

The problem with this kind of fluid separation device is that because the partition is always in contact with the inner wall of the well under the action of the elastic member, under the joint action of the friction between the partition and the inner wall of the well and the pressure of natural gas or oil below the fluid separation device , the fluid separation device cannot descend back to the bottom of the well, or the descending speed is slow

Images