Short intelligent-control hoist type lifting oil extraction system with ultra long stroke and working method

Abstract

The invention relates to a short intelligent-control hoist type lifting oil extraction system with an ultra long stroke and a working method. The oil extraction system comprises a motor, a winding drum, a fixed pulley, a derrick, a slide and swing device, a control assembly, an oil extraction rope and a down-hole multi-stage plunger ultra long stroke oil well pump; the control assembly controls the motor to start, rotate forwards and backwards and halt for waiting according to set parameters such as the stroke, down-hole liquid pressure, halt waiting time and the like; the winding drum is driven to rotate forwards and backwards and halt, the oil extraction rope on the winding drum drives multi-stage plungers of the down-hole multi-stage plunger ultra long stroke oil well pump to reciprocate at the set stroke in an ultra long pump cylinder, a whole well operation mode that a plunger of a conventional hoist type bailing oil extraction device lifts a well liquid from the well bottom to the well mouth is changed, a non whole well operation mode is realized, the whole unit structure is compact, the size is small, material consumption is reduced, energy is saved, the cost is reduced remarkably, and one-time investment of an oil well can be reduced by almost 40%. The short intelligent-control hoist type lifting oil extraction system with the ultra long stroke is applicable to a deep well, a stripper well and a heavy oil well, and the oil well yield-increasing effect is improved remarkably.

Description

technical field [0001] The invention relates to oil production equipment, in particular to a low-profile super-long-stroke intelligent control winch-type lifting oil production system and a working method. Background technique [0002] At present, the beam pumping unit is the main pumping equipment of the rod pumping unit. Its disadvantages are: 1. The stroke is generally 6-8m due to the structural limitation, and the stroke loss is relatively large; 2. The pumping unit is large in size, There are many consumables. 3. The cost of equipment operation and maintenance and the cost of oil production per ton of fluid are large; 4. It is not suitable for deep wells, low permeability wells, heavy oil wells and wells containing gas. As most of my country's oilfields enter the middle and late stages of exploitation, especially the continuous development of low permeability wells, ultra-deep wells, and heavy oil wells, the beam pumping unit is no longer suitable for the production nee...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the practical problems in the production of the above-mentioned prior art, and provide a low-slung ultra-long-stroke intelligent control winch type lifting oil recovery system and working method, which utilizes the downhole multi-stage plunger ultra-long stroke The oil well pump enables the stroke of the pumping unit to be set arbitrarily between tens of meters and hundreds of meters, breaking the limitation of the rod pump stroke of only 6-8 meters, and realizing the non-full well operation mode with super long stroke, which can not only overcome the beam The stroke of the pumping unit is limited and it is not suitable for low-yield oil wells, deep wells, and large gas-bearing wells, and it can avoid the existing hoist-type lifting oil production device due to the large volume and weight of the whole machine due to the full-well operation mode, and consumables Too many and inconvenient to transport; fast loss of pumps, high cost of tubing treatment, and high replacement cost of the entire flexible oil rope after wear and tear. The oil pipe above the pump barrel of the ultra-long stroke oil pump can be taken out, which can reduce the one-time investment cost of the oil well again, so that the cost of the whole machine can be reduced by nearly 40%

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