Chain and pocket type rotary bailing oil production device for oil production well

Abstract

The invention relates to the technical field of oil field production, in particular to a chain and pocket type rotary bailing oil production device for an oil production well. The chain and pocket type rotary bailing oil production device for the oil production well comprises a gear box, an oil sleeve and an oil tank, wherein a box body seat is arranged at the bottom of the gear box, the top of the oil sleeve is arranged at the bottom of the box body seat, the gear box is connected with the oil sleeve through the box body seat, an inner cavity of the gear box communicates with an inner cavityof the oil sleeve, a suspension wheel and a direction-changing traction wheel are respectively arranged in the inner cavity of the gear box, a guide wheel is arranged at the bottom end of the oil sleeve, a rotating ring chain for connection and transmission is arranged between the suspension wheel, the direction-changing traction wheel and the guide wheel, and a plurality of oil pockets are arranged on the rotating ring chain at equal intervals. By means of a multi-point gear transmission mechanism, the rotary ring chain is driven to be circularly lifted up and down, oil extraction faults of wax clamping and sand clamping pumps are fundamentally solved, oil field development cost is greatly reduced, and operation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oilfield exploitation, in particular to a chain-and-pocket-type rotary lifting and fishing oil production device for oil production wells. Background technique [0002] The oil well is the hole drilled according to the well layout system of the oil field development plan when extracting oil, and is used for the passage of oil from the bottom of the well to the well head. Generally, after the oil well is drilled into the oil layer, the oil layer casing is lowered, and oil well cement is injected into the annular space between the casing and the well wall to maintain the well wall and seal the oil, gas, and water layers. The hole gun shoots through the oil layer to form a channel, which is lowered into the oil pipe, and the oil is raised from the bottom of the oil well to the head of the well by a suitable induction method. [0003] There are certain technical defects in the existing oil production technol...

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Problems solved by technology

[0003] There are certain technical defects in the existing oil production technology, mainly including the following aspects. The existing single well lifting pump (lifting vehicle) for oil recovery cannot guarantee continuous single well lifting and production throughout the day, and the efficiency of single well oil extraction machinery and equipment is low , high cost; single well lifting pump (lifting truck) cannot meet the needs of oil reservoirs with constant flow and continuous oil production and transportation; heavy oil reservoirs have high viscous resistance during the lifting process, and it is easy to get stuck in the tubing due to wax formation. It cannot flow; while the pump calibration of the reciprocating plunger pump is low, the pump lift cannot meet the development needs of heavy oil oilfields; sandstone reservoirs are easy to produce oil sands, and oil production failures of sand stuck submersible electric pumps often occur, making the reciprocating plunger pump The plunger pump is severely worn and damaged, causing production shutdown accidents and increasing the cost of oilfield development

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