Multi-well coordinating frequency-conversion control oil pumping unit system

Abstract

The invention belongs to the field of oil production equipment in oil fields, and in particular relates to a multi-well coordinated frequency conversion control pumping unit system, which includes a driving device, an oil extraction rope, an oil pump, a derrick and a frequency conversion control cabinet. The driving device includes a motor, a speed reduction mechanism and a reel. The motor drives the reel to rotate through the reduction mechanism. One end of the oil extraction rope is wound on the reel, and the other end goes around the fixed pulley on the top of the derrick and connects with the plunger of the downhole oil well pump. Correspondingly, both the derrick and the oil well pump are Each has two sets, and there is no protrusion on the ground between the two derricks, and the driving device is arranged in a square pit under the ground. The driving device is arranged below the ground, which can make full use of the space between two oil wells, reduce the area of ​​the well site, and thereby reduce the damage to the surface vegetation. At the same time, encapsulating the driving device can effectively reduce the erosion damage to bearings and rubber parts caused by dust and sunlight, thereby extending the maintenance cycle and reducing maintenance costs.

Description

technical field [0001] The invention belongs to the field of oil production equipment in oil fields, in particular to a multi-well coordinated frequency conversion control pumping unit system. 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 announcement number CN105804703A discloses a single-machine double-well pumping mechanism. 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 of the pu...

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Problems solved by technology

However, it is found in production practice that this pumping unit has obvious defects: 1. The driving mechanism of this pumping unit is located on the ground and occupies a large amount of ground space. Therefore, the damage to surface vegetation is more serious; 2. In this type of pumping unit, the oil ropes of two wells are wound on one reel, and when one oil rope breaks off 3. When the brake of the reel fails, the plunger of the oil pump will be under its own gravity. Under the action, it drops rapidly, and then violently impacts the pump body of the oil well pump, causing damage to the oil well pump

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