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Oil-containing bubble shearing and oil filtering control device for fireflooding effective oil well casing gas

A technology of oil well casing and control device, which is applied in the direction of wellbore/well valve device, wellbore/well components, production fluid, etc., which can solve the problem of high partial pressure, increased corrosion probability of downhole oil and casing, and inability to measure single well Gas production and other issues to achieve the effect of reducing pump efficiency and improving production efficiency

Pending Publication Date: 2022-04-19
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. It is impossible to measure the gas production of a single well
[0006] 2. Holding the casing pressure causes casing gas CO 2 High partial pressure increases the corrosion probability of downhole tubing and casing

Method used

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  • Oil-containing bubble shearing and oil filtering control device for fireflooding effective oil well casing gas
  • Oil-containing bubble shearing and oil filtering control device for fireflooding effective oil well casing gas
  • Oil-containing bubble shearing and oil filtering control device for fireflooding effective oil well casing gas

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Embodiment Construction

[0040] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0041] A fire flooding effect oil well casing gas oil-containing bubble shear oil filter control device, including an inner central pipe, the inner central pipe contains a shunt pipe 4, a setting and unsealing mechanism and an air bubble that are sequentially sleeved from top to bottom A shearing and breaking mechanism, an exhaust passage 22 is provided between the inner center pipe and the setting and unsealing mechanism, and the air bubble shearing and breaking mechanism includes an inner and outer filter layer 18 and a slotted screen tube 19, and the split flow The tube wall of the tube 4 contains a liquid inlet channel 401 and an exhaust channel 402, and the liquid in the inner central tube...

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Abstract

The invention discloses a fireflooding effected oil well casing gas oil-containing bubble shearing and oil filtering control device which comprises an inner center pipe, the inner center pipe is externally provided with a flow dividing pipe (4), a setting and unsetting mechanism and a bubble shearing and breaking mechanism which are sequentially arranged from top to bottom in a sleeving mode, and oil-containing bubbles can be broken after entering a slotted screen pipe (19); and gas in the oil-containing bubbles can be discharged out of the oil-containing bubble shearing oil filtering control device for the fireflooding effected oil well casing gas after sequentially passing through the filtering layer (18), the exhaust channel (22) and the exhaust hole channel (402). For a fireflooding effective oil well, during oil extraction, the tail gas is clean and does not contain oil after passing through the sleeve gas oil-containing bubble shearing oil filtering control device by releasing the sleeve gas, reducing the pressure in the sleeve, preventing the sleeve gas from entering an oil extraction pump and reducing the pump efficiency. And the tail gas can be normally recovered and treated. And the production efficiency of a fireflooding affected oil well is improved.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation equipment, in particular to a control device for oil-containing gas bubble shearing and oil filtering in the casing gas of a fire driven effective oil well. Background technique [0002] Fire flooding is an important heavy oil thermal recovery method. It continuously injects air into the formation through the gas injection well and ignites the oil layer to achieve intralayer combustion, thereby pushing the formation crude oil from the gas injection well to the production well. At present, there are 9 gas injection wells in block Jin 91 fire flooding, and the daily air injection is 13.87×104Nm 3 , 22 first-line production wells, 16 open wells, daily liquid production 391t, daily oil production 22t, daily tail gas production 10.1×104Nm 3 Since Block Jin 91 was put into development and production by fire flooding, the number of effective production wells has gradually increased, and t...

Claims

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Application Information

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IPC IPC(8): E21B43/243E21B43/08E21B33/127E21B34/14
CPCE21B43/243E21B43/086E21B33/127E21B34/14
Inventor 徐立清林军范红招陶煜征贾财华王德伟刘耀璐韩松权崇国刘广友罗鹏飞赵辰军张敏朱涛张玉增肖家宏林丽高航甄雪徐纪彬刘进于爽李春花周小兵孙凯吴洪举
Owner PETROCHINA CO LTD
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