One machine and two wells production equipment and technology

Abstract

The invention belongs to the field of oil-field oil production equipment, and particularly relates to a one-machine double-well oil production device and process. The one-machine double-well oil production device comprises two derricks, two driving mechanisms and two oil pumping ropes; a fixed pulley bracket is installed at the upper end of each derrick, two fixed pulleys are symmetrically installed on each fixed pulley bracket, and the two driving mechanisms are arranged in two square pits located under the ground respectively; for the two fixed pulleys on each fixed pulley bracket, the fixedpulley close to one sides of rollers and the oil pumping rope between the corresponding rollers are in the vertical direction, each roller is provided with an oil pumping rope winding section and twolinkage rope winding sections, and each oil pumping rope winding section is located between the two corresponding linkage rope winding sections. By means of the one-machine double-well oil productiondevice and process, the problems mentioned in the background art can be effectively solved that the ground space is seriously wasted, the requirement for the structural strength of the derricks is high, the weight of work vehicles and other heavy equipment cannot be borne due to the excessive span of cover plates.

Description

technical field [0001] The invention belongs to the field of oil production equipment in oilfields, and in particular relates to a one-machine double-well oil production device and a process. Background technique [0002] In the field of oil production equipment, the single-machine double-well pumping unit is a new type of pumping unit developed in recent years. For example, the invention patent application document with the application number CN201711337624.2 discloses a multi-well coordinated frequency conversion control pumping unit In this oil pumping mechanism, the plungers of the oil pumps in the two wells rise and fall alternately and are linked with each other, so that the two plungers act as counterweights to each other during the lifting process, thereby producing a good energy-saving effect. At the same time, the winch-type oil pumping mechanism used in this oil pumping mechanism adopts a long-stroke oil pump downhole, which further reduces the energy consumption ...

AI Technical Summary

Problems solved by technology

However, in this pumping unit system, the linkage between the two drums is realized through gears. Therefore, the two drums can only be set at the midpoint of the line connecting the two wells at the same time and cannot be set separately. The structure has several defects: 1. Although this pumping unit reduces the occupation of ground space by setting the driving mechanism under the ground, the two oil extraction ropes crossed on the ground will still hinder the operation and construction. It affects the use of ground space, and the larger the well spacing, the more serious the waste of ground space; 2. The oil rope between the fixed pulley and the reel is inclined, and the derrick will withstand a large overturn when the pumping unit is working Under the action of overturning moment, there is a trend of overturning and deformation in the underground, so the structural strength of the derrick is required to be high; 3. After the two reels are set in one place, the volume of the square pit under the ground large, and the span of the cover plate is relatively large. In this case, the load-bearing capacity of the cover plate is very limited, and it is difficult to bear the weight of heavy equipment such as work vehicles.

[0003] In addition, during construction, in order to avoid obstructing the construction work, the space above the wellhead needs to be given up. In the prior art, it is necessary to use a crane to remove the fixed pulley and its bracket at the upper end of the derrick, and calling the crane not only consumes manpower and material resources, and high operating costs

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