Novel connection protection structure applied to oil production device

Abstract

A new connection protection structure applied to oil production equipment, characterized in that: the new connection protection structure applied to oil production equipment includes a connection seat, a donkey head rope, an upper locking sleeve, a lower locking sleeve, and a first polished rod slip , the sucker rod, the second polished rod slip, and the third polished rod slip; wherein: it includes a connecting seat, a through hole for installing the sucker rod is arranged in the middle of the connecting seat, and a through hole for passing through the donkey head rope is arranged on both sides, The donkey head ropes on the left and right sides pass through the through holes, and the upper and lower locking sleeves are provided on the outer casing of the connecting piece to lock the donkey head ropes. The sucker rod in the middle passes through the through holes. The sucker rod is clamped, the second polished rod slip is set at the through hole of the connecting piece and clamped with the sucker rod, the third polished rod slip is set under the connecting piece and locked with the sucker rod, the connecting piece is rectangular . The advantages of the present invention: the novel connection protection structure applied to the oil production device described in the present invention has simple structure, reasonable design, low cost, good fixing and locking effect, not only easy to install and disassemble, but also effectively prevents sucker rod from In the event of a falling well, a line of defense is formed to protect the sucker rod from falling off.

Description

technical field [0001] The invention belongs to the technical field of oil production, and in particular provides a novel connection protection structure applied to oil production devices. Background technique [0002] Now, the sucker rod and tubing are the important parts of oil production in the working process of the oil pumping unit in the oil industry. Among them, the donkey head rope hanger of the pumping unit is a flexible connecting piece connecting the polished rod and the donkey head, and bears the alternating load of the pumping well. , at present, the connection methods of the donkey head rope hanger and the sucker rod mainly include the top-through type, the side-mounted type, and the formal-mounted type. On the donkey head rope hanger, however, stress concentration will occur on the contact surface between the polished rod slips and the sucker rod, which is easy to cause fracture and the accident of the sucker rod falling into the well. Contents of the invent...

AI Technical Summary

Problems solved by technology

[0002] Now, the sucker rod and tubing are the important parts of oil production in the working process of the oil pumping unit in the oil industry. Among them, the donkey head rope hanger of the pumping unit is a flexible connecting piece connecting the polished rod and the donkey head, and bears the alternating load of the pumping well. , at present, the connection methods of the donkey head rope hanger and the sucker rod mainly include the top-through type, the side-mounted type, and the formal-mounted type. On the donkey head rope hanger, however, stress concentration will occur on the contact surface between the polished rod slips and the sucker rod, which is easy to cause fracture and the accident of the sucker rod falling into the well

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