Oil tube anti-wear device

Abstract

The invention discloses an oil tube anti-wear device. The anti-wear device includes a driving mechanism and a rotary mechanism; the driving mechanism can be connected to the rotary mechanism to form an integral body through a center tube; the lower end of the rotary mechanism is connected to an oil tube; the rotary mechanism consists of a gland, a shell and a tubing hanger; the tubing hanger is located in the center of the shell, and the top end of the tubing hanger is connected to the center tube; the gland sleeves on the outside of the center tube and is installed on the top of the shell; the position on the shell corresponding to an oil passing groove of the tubing hanger is provided with an oil outlet hole; the driving mechanism can be connected to the rotary mechanism to form an integral body through a center tube; the tubing hanger has the oil outlet hole and a center hole which communicates with the shell; and the external diameter along the oil outlet hole surrounding the tubing hanger is provided with the oil passing groove. The anti-wear device depends on the power of an oil pumping unit, the rotation of the oil tube in a well can be accomplished while the oil pumping unit extracts crude oil, so that uniform wearing of the oil tube can be realized, and therefore, the purpose of prolonging the service life of the oil tube can be achieved, the number of operations in the oil well can be reduced, and oil extraction costs can be lowered.

Description

technical field [0001] The invention relates to oil production equipment in the petroleum industry, in particular to an antiwear device for petroleum oil pipes. Background technique [0002] In the exploitation of oil, the most widely used mechanical extraction method is the rod pump extraction method. The device has simple ground equipment and long service life. Suspend the oil pipe on the wellhead, and the pumping unit on the ground drives the piston in the pump barrel of the rod pump to reciprocate through the sucker rod to extract crude oil. Although the mechanical structure of the rod pump device is simple, the movement of the sucker rod in the oil pipe and the movement of the oil pipe itself is very complicated. This movement will cause severe friction between the sucker rod and the inner wall of the oil pipe, and the failure of the oil pipe will occur. If the tubing is anchored, the tubing will move upward when the floating valve is closed and the fixed valve is ope...

AI Technical Summary

Problems solved by technology

For oil wells with serious eccentric wear, the operation period is only more than one month due to the damage of the tubing, which greatly increases the cost of oil production

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