Method of increasing single well production by building pressure

A single-well production and pressure technology is applied in the field of oil well production and pressure-holding to increase single-well production. The effect of increasing single well production

Inactive Publication Date: 2017-07-21
SOUTHWEST PETROLEUM UNIV
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  • Abstract
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Problems solved by technology

Although this method can effectively control the wellhead back pressure, it reduces the wellhead pressure and cannot effectively solve the problem of crude oil degassing in the wellbore.

Method used

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  • Method of increasing single well production by building pressure
  • Method of increasing single well production by building pressure
  • Method of increasing single well production by building pressure

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Embodiment Construction

[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] According to the oilfield wellhead process characteristics and production technology experience, by controlling the opening of the back pressure gate to properly hold the pressure of the tubing, an oil recovery technology based on wellhead back pressure control is carried out. Under the condition of increased pressure, the degassing degree of oil well associated gas And the degassing volume is reduced to a certain extent, the casing pressure is reduced, the gas volume of the tubing is reduced, and the pump efficiency of the oil pump is improved, thereby increasing the production of the oil we...

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Abstract

The invention discloses a method of increasing single well production by building pressure, and belongs to the production technique of an oil producing well. In the lifting process of crude oil, the pressure inside a wellbore is gradually reduced, the crude oil is degassed seriously, so that oil supply is insufficient, gas volume in an oil pipe is large, pump efficiency of an oil well pump is low, and oil well production is low. In view of this problem, pressure influences on gas degassing within the wellbore, the opening of a pressure returning valve is controlled to conduct appropriate pressure building to the oil pipes, the pressure inside the oil pipe is increased to curb the degassing of the crude oil, so that the working conditions of the oil well pump are improved, by comparing indicator diagrams of pressure-building and unpressured-building oil production, the building pressure method improving the pump efficiency can be seen, and the single well production is increased.

Description

technical field [0001] The invention discloses a method for suppressing pressure to increase the output of a single well, which belongs to the production technology of oil wells. Background technique [0002] Nowadays, as the oilfield development enters the middle and late stages, the formation energy of the oil reservoir gradually decreases, and the gas content of crude oil gradually increases. At the same time, in the process of new production capacity and oil wells increasing production through layer adjustment, some new wells and measured oil wells are affected by the location of wells or single-layer conditions. During production, the pressure gradually decreases from the bottom of the well to the wellhead, and the crude oil The solubility of oil in the wellbore is gradually reduced, the wellbore crude oil is seriously degassed, the casing pressure and liquid level drop, and the drop in pressure difference leads to insufficient fluid supply to the oil well. [0003] Th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/25
CPCE21B43/25
Inventor 袁养平刘永辉王颖刘志刘杨风郭永辉王俊郭军辉郑科
Owner SOUTHWEST PETROLEUM UNIV
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