Combined oil production tree for oil production well

Abstract

The invention discloses a combined oil production tree for a oil production well, and relates to the technical field of oil production wells. The oil production tree comprises a sucker rod, a hanger and a plurality of oil production tree assemblies; each oil production tree assembly comprises an oil pipe, combined connecting flanges and a plurality of adjusting assemblies; the combined connecting flanges are arranged at the two ends of each oil pipe and used for being connected with the adjacent oil production tree assemblies in a fastened mode; each adjusting assembly comprises a side pressing piece and an abutting piece; the side portions of the side pressing pieces are installed on the inner walls of the oil pipes in a stepped hanging mode; the opposite faces of the abutting pieces and the side pressing pieces are inclined faces which abut against each other; locking abutting pieces are arranged on the outer side walls of the oil pipes; and one ends of the locking abutting pieces penetrate through the outer walls of the oil pipes and extend to the side portions of the abutting pieces. According to the oil production tree, the locking abutting pieces are used for pushing the abutting pieces to abut against the sucker rod, so that the angle of the sucker rod is adjusted to ensure that the sucker rod gets close to the axis of the corresponding oil pipe, and the axial coincidence error is reduced; the fluctuation of the angle of the sucker rod is adapted, so that hard eccentric wear of parts in contact with the sucker rod is reduced; and the operation is convenient, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of oil production wells, in particular to a combined christmas tree for oil production wells. Background technique [0002] The Christmas tree is a wellhead device used for oil extraction such as self-flowing wells and mechanical production wells. It is the main equipment for controlling and regulating oil and gas production at the top of the oil and gas well. It mainly consists of three parts: casing head, tubing head, and Christmas tree body. , the Christmas tree is a component located at the opening leading to the top of the oil well, including valves for measurement and maintenance, safety systems and a series of monitoring instruments. An important barrier to the external environment, which includes many valves that can be used to regulate or prevent the production of crude oil vapor, natural gas and liquids from gushing from the well. [0003] Some existing oil production trees are formed by the combi...

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Problems solved by technology

[0003] Some existing oil production trees are formed by the combination of oil production parts, in which the oil rod will pass through multiple combined oil production parts. There is a coincidence error between the axis of the oil rod and the axes of multiple oil pipes, which will easily lead to hard eccentric wear of the oil rod and the contacting parts, resulting in damage

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