Multifunctional oil testing and oil gas production wellhead device

Abstract

The invention provides a multifunctional oil testing and oil gas production wellhead device which comprises a Christmas tree. The Christmas tree comprises a four-way joint and a valve installed on the four-way joint, and the oil production wellhead device further comprises a valve replacement unit used for replacing the valve. The valve replacement unit comprises a first rotating shaft, an outer spline is arranged on a spline shaft of the first rotating shaft, the outer spline is in spline connection with a first shaft sleeve, the outer spline is further sleeved with a second shaft sleeve in a sliding manner, telescopic clamping assemblies used for clamping the valve are installed on the outer wall of the first shaft sleeve and the outer wall of the second shaft sleeve, and a plurality of sliding blocks are further fixedly connected to the outer wall of the second shaft sleeve. The sliding blocks are arranged on a first sliding rod in a sliding mode, and the first sliding rod is parallel to the first rotating shaft. According to the multifunctional oil testing and oil gas production wellhead device, the valve to be overhauled or replaced can be clamped when the valve is overhauled and replaced, the valve does not need to be manually supported in the overhauling and replacing process, the labor intensity of workers is reduced, and the workers can conveniently observe and overhaul the interior of a valve element and a valve body of the valve.

Description

technical field [0001] The invention relates to an oil production wellhead device, in particular to a multi-functional wellhead device for oil testing and production of oil and gas. Background technique [0002] The Christmas tree is a wellhead device used to exploit oil such as self-flowing wells and mechanical production wells. It is the main equipment for controlling and regulating oil and gas production at the uppermost part of the oil and gas well. It mainly consists of three parts: the head, the tubing head, and the oil (gas) 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 range of monitoring devices. The Christmas tree connects the production pipeline and the oil flow pipe from the downhole, and at the same time serves as an important barrier to isolate the top of the oil well from the external environment. It is composed of oil pipe hangers...

AI Technical Summary

Problems solved by technology

[0003] During the oil production process, when the gate on the oil production tree breaks down, the oil production work needs to be interrupted, and the work can only be started after the valve is replaced manually; in the existing valve replacement process, two people are required to cooperate with each other, and one person first manually replaces the valve. The valve is supported, and another person unscrews all the screws connecting the valve, and then removes the valve for inspection and replacement. Due to the heavy weight of the valve, the manual work intensity is high during the replacement process, and two people need to cooperate with each other. low work efficiency

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