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Environmentally-friendly treatment method and device for fully enclosed process of produced gas produced by heavy oil fire flooding

A kind of environmental protection treatment, fully enclosed technology, applied in the direction of gas treatment, separation method, exploitation of fluid, etc., can solve problems such as environmental pollution, formation damage, waste of resources, etc., to achieve the effect of simple process

Active Publication Date: 2021-07-02
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method and device for environmentally friendly treatment of a fully enclosed flow of produced gas produced by heavy oil fire flooding, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the environmental pollution caused by the outflow of produced gas produced by heavy oil fire drive. Problems of resource waste and formation damage

Method used

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  • Environmentally-friendly treatment method and device for fully enclosed process of produced gas produced by heavy oil fire flooding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: as attached figure 1 As shown, the environmental protection treatment method of the fully enclosed process of the produced gas from heavy oil fire flooding is carried out according to the following method: first step, the produced gas from heavy oil fire flooding enters the pretreatment unit 7, and after cooling, separation and preheating, the pretreatment unit 7 is obtained. Produced gas after treatment; in the second step, the produced gas after pretreatment is sent to desulfurization unit 8, under the action of desulfurizing agent in desulfurization unit 8, the hydrogen sulfide gas in the produced gas of heavy oil fire flooding is removed by wet desulfurization, and the desulfurized recovered gas is obtained. Gas output; the third step, the produced gas after desulfurization is sent to the supercharging unit 9, and the produced gas after desulfurization is pressurized in the supercharging unit 9, and the pressure is increased to a pressure of 1.6MPa to 2...

Embodiment 2

[0021] Embodiment 2: as attached figure 1 As shown, the environmental protection treatment method of the fully enclosed process of the produced gas from heavy oil fire flooding is carried out according to the following method: first step, the produced gas from heavy oil fire flooding enters the pretreatment unit 7, and after cooling, separation and preheating, the pretreatment unit 7 is obtained. Produced gas after treatment; in the second step, the produced gas after pretreatment is sent to desulfurization unit 8, under the action of desulfurizing agent in desulfurization unit 8, the hydrogen sulfide gas in the produced gas of heavy oil fire flooding is removed by wet desulfurization, and the desulfurized recovered gas is obtained. Gas output; the third step, the produced gas after desulfurization is sent to the supercharging unit 9, and the produced gas after desulfurization is pressurized in the supercharging unit 9, and the pressure is increased to a pressure of 1.6MPa or 2...

Embodiment 3

[0022] Example 3: As an optimization of the above example, in the first step, the liquid particle size in the pretreated produced gas is less than 100 μm, the solid particle size is less than 100 μm, and the temperature of the produced gas after pretreatment is 30°C to 40°C.

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Abstract

The invention relates to the technical field of oil field natural gas surface engineering, and relates to a method and device for an environmentally friendly treatment method and device of a fully enclosed flow of produced gas produced by heavy oil fire flooding. The booster unit, the inter-stage dehydration unit and the wellhead reinjection unit are connected to inject the gas produced by fire flooding back into the formation in a safe and environmentally friendly manner, achieving zero discharge of the produced gas and relieving environmental pressure. Realize the standard treatment of produced gas, and at the same time, remove hydrogen sulfide gas to avoid damage to downstream equipment and formations caused by the enrichment of hydrogen sulfide in produced gas during the cycle injection and production process. The method and device of the present invention have a fully enclosed flow-environmental protection treatment method and device for produced gas produced by heavy oil fire drive. When the component range fluctuates greatly, it has the characteristics of safety, environmental protection and energy saving.

Description

technical field [0001] The invention relates to the technical field of oil field natural gas surface engineering, and relates to a method and device for an environmentally-friendly treatment of a fully enclosed flow of produced gas produced by heavy oil fire flooding. Background technique [0002] The gas produced by fire flooding is the product of insufficient combustion of crude oil under the formation, which is mainly composed of injected gas, gas generated by combustion, alkanes, water vapor, etc. The concentration of non-methane total hydrocarbons and hydrogen sulfide in the gas produced by fire flooding exceeded the relevant requirements of the "Comprehensive Emission Standard of Air Pollutants". At present, both Liaohe Oilfield and Xinjiang Oilfield in China have carried out fire flooding to treat the produced gas. After the hydrogen sulfide is removed by dry method, the produced gas is directly discharged through the release pipe. This treatment process is only suit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/52B01D53/50B01D53/26B01D53/00E21B43/40
CPCB01D53/00B01D53/26B01D53/502B01D53/52B01D53/523B01D53/80B01D2257/302B01D2257/304B01D2258/02E21B43/40
Inventor 葛劲风张萌萌朱友庄吴昊荣少杰沈万军赵建龙马兵杨肇琰何勇
Owner BC P INC CHINA NAT PETROLEUM CORP