Oil tube head reducing joint for rod pumped well pump inspection operation

Abstract

The invention discloses an oil tube head reducing joint for rod pumped well pump inspection operation, and belongs to the field of petroleum exploitation. The oil tube head reducing joint comprises abody (1) provided with a hollow structure, a clamping hoop head (2) connected with the upper end portion of the body (1) and provided with of a hollow structure, and a flange (3) connected with the lower end portion of the body (1); the position, on the upper end portion of the body (1), of an inner cavity is internally connected with a wax scraping device (4), and the inner diameter of the wax scraping device (4) is slightly larger than the outer diameter of a sucker rod string; the position, on the lower end portion of the body (1), of the inner cavity is internally connected with a coil tube (5); the inner side (501) of the coil tube is connected with a nozzle (6) in a penetrating mode; and the lower end portion of the body (1) is provided with a first through hole (7), and the coil tube (5) is connected with the lower end portion of the body (1) through the first through hole (7) in a penetrating mode. According to the provided oil tube head reducing joint for rod pumped well pumpinspection operation, the situation that crude oil is scattered on the well field ground is avoided, energy waste and environmental pollution are avoided, and safety accidents are also reduced.

Description

Technical field [0001] The invention relates to the field of oil exploitation, in particular to an oil pipe head reducing joint used for well inspection and pump operation of a pumping unit. Background technique [0002] With the rapid development of social economy, the demand for oil has gradually increased. Pumping unit inspection and pumping operation is a routine maintenance work in the process of oil extraction, because in the process of oil extraction, the downhole pump will be severely waxed and disconnected from the piston pipe rod, so it is necessary to regularly inspect the pumping unit operation. [0003] At present, the adopted method of pump inspection is to wash the well with the well flushing fluid first, and then flush the sucker rod string. Specifically, the operation of pump inspection requires the use of special equipment to lift the sucker rod string to the ground in turn, and spray the sucker rod string with a boiler car before it goes down again to remove th...

AI Technical Summary

Problems solved by technology

[0005] When the pumping unit is inspecting the pump, the crude oil will be taken out of the wellbore with the sucker rod string, so that the crude oil will fall to the ground, pollute the natural environment, and the ground crude oil cannot be reused, which is a waste of resources; construction personnel work in a slippery oil and gas environment , low safety factor, prone to injury accidents such as slipping, dropping hands, and steam burns; oil and gas volatilize in the natural environment, and there are safety hazards such as fire and explosion

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