Wellhead

Abstract

The invention relates to the field of petroleum technology, and discloses a wellhead device, including a cylinder body, an oil injection pipe is fixedly installed at the bottom of the cylinder body, a main control valve is fixedly installed at the middle part of the oil injection pipe, and a bottom on the left side of the cylinder body A pressure relief pipe is fixedly installed, a double control solenoid valve is fixedly installed in the middle of the pressure relief pipe, and a pressure relief box is fixedly installed on the left side of the pressure relief pipe, and both ends of the top of the cylinder are fixedly installed with multiple sections A telescopic rod, the outer periphery of the upper end of the multi-section telescopic rod is sleeved with a protection box. The wellhead device is equipped with multi-section hydraulic rods, pressure relief tanks and pistons to achieve a good pressure relief effect. When the oil needs to be relieved, the oil will quickly fill the cylinder. With the continuous injection of oil, The height value of the piston also gradually increases. When the cylinder is filled with oil, the piston will drive the extrusion block to squeeze the pressure sensor, and then the pressure sensor will be energized and the double-control solenoid valve will open.

Description

technical field [0001] The invention relates to the technical field of petroleum, in particular to a wellhead device. Background technique [0002] Petroleum, one of the main objects of geological exploration, is a viscous, dark brown liquid known as "industrial blood". There are oil reserves in some areas of the upper crust, and the main components are various alkanes, cycloalkanes, and aromatic hydrocarbons The oil-forming mechanism of petroleum has two theories of biosedimentary oil and petrochemical oil. The former is more widely accepted. It is believed that oil is formed by organisms in ancient oceans or lakes after a long evolution. It belongs to biosedimentary oil and is non-renewable. The latter believes that petroleum is produced by the carbon in the earth's crust itself, has nothing to do with biology, and is renewable. Petroleum is mainly used as fuel oil and gasoline, and is also a raw material for many chemical industrial products, such as solutions, fertilizer...

AI Technical Summary

Problems solved by technology

[0003] With the continuous development of industry, people's demand for oil is becoming more and more vigorous, so it also promotes the great development of the oil extraction industry. People have developed a complete set of related equipment for oil extraction. Oil extraction is often similar to drilling Well-type mining extraction, which makes the oil often have a pressure relief process before extraction. In the past, the pressure relief was directly allowed to gushe, and the extraction was continued until the pressure relief was completed. However, this method is too extensive. First, it will make the oil The mining environment is relatively harsh, resulting in a waste of resources. At the same time, the secondary extraction of oil in the later stage is not convenient, which is not conducive to long-term development and use.

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