Oil-gas well flowback waste gas comprehensive treatment device
A comprehensive treatment, oil and gas well technology, applied in mining wastewater treatment, degassed water/sewage treatment, dispersed particle separation, etc., can solve the problems of black smoke, environmental pollution, inconvenient integration, etc., and achieve efficient and economical treatment and installation. Easy to use and easy to hoist
Active Publication Date: 2020-07-10
CNPC BOHAI DRILLING ENG +1
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Problems solved by technology
This treatment method has a certain ability to deal with some combustible organic gases, but when the gas volume is large, the organic waste gas cannot be fully burned, and a large amount of black smoke will be emitted, which will also cause certain pollution to the environment.
Moreover, this treatment method cannot deal with some non-combustible acid gases (HCl, HF, etc.), resulting in poor treatment effect on waste gas
[0004] A comprehensive analysis of the treatment of oil and gas well flowback gas should include two processes: one is the gas-liquid separation process, because the flowback fluid is a gas-liquid mixed state and returns from the well. If the waste gas is to be treated, the gas must be separated. The currently used The two-phase separator and the three-phase separator are large in size and inconvenient to transport. During the construction process, it takes up a lot of time for dismantling, moving and pressing, and it is not easy to integrate with the subsequent comprehensive gas treatment equipment, which limits their applicability.
The second is the comprehensive waste gas treatment process. Since the separated gas is a mixed waste gas of organic gas and acid gas, it is necessary to treat the two gases separately in one process to ensure the treatment effect. Some of the current waste gas treatment equipment only It can handle organic waste gas, some can only handle acid gas, and there is no equipment that can comprehensively treat two kinds of waste gas
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[0039] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0040] Such as Figure 1 to Figure 6 As shown, an oil and gas well exhaust gas comprehensive treatment device of the present invention includes a degassing tank 1, a vacuum air-liquid separator 2, an acid gas absorber 3, an organic waste gas absorber 4, an axial flow fan 5, and a liquid inlet pipe 6. Outlet pipe 7, return pipe 8, main air pipe 9, stop valve 10, tee 11, electronic flow meter 12, air outlet pipe 13, exhaust pipe 14, drain pipe 15, drain pump 16, electric control box 17 and Skid mount 18.
[0041] Such as figure 1 , Figure 7 with Figure 8 As shown, the degassing tank 1 is a cylindrical tank, including a liquid inlet 1-1, an electronic float level gauge 1-2, an air outlet 1-3, a return inlet 1-4, a liquid outlet 1-5 and slag discharge Mouth 1-6. The liquid inlet 1-1 is located on the upper side of the degassing tank 1, and is connected with the li...
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The invention relates to the technical field of oil-gas well downhole operation, which relates to an oil-gas well flowback waste gas comprehensive treatment device. The oil-gas well flowback waste gascomprehensive treatment device comprises a degassing tank, a vacuum gas-liquid separator, an acid gas absorber and an organic waste gas adsorber, the degassing tank is connected with a liquid inlet pipe, primary degassing is achieved through the gravity effect, secondary degassing is achieved through the vacuum effect of the vacuum gas-liquid separator, liquid flows circularly between the degassing tank and the vacuum gas-liquid separator through a liquid outlet pipe and a return pipe, and circular degassing is achieved; the drainage pipe is connected to the return pipe and is connected withthe liquid storage tank through the drainage pump to automatically drain liquid; and the gas separated by the degassing tank and the vacuum gas-liquid separator is neutralized and adsorbed by the acidgas absorber and the organic waste gas adsorber, and is finally exhausted by the exhaust pipe. The device has the functions of gas-liquid separation and waste gas treatment, waste gas in the flowbackfluid can be completely separated, and acid gas and organic components in the waste gas are completely treated through neutralization and absorption of alkali liquor and physical adsorption of activated carbon, so that the gas reaches the national emission standard.
Description
technical field [0001] The invention relates to the technical field of downhole operations of oil and gas wells, and is suitable for the comprehensive treatment of waste gas flowback after the oil and gas wells are opened, in particular to a comprehensive treatment device for waste gas flowback of oil and gas wells. Background technique [0002] After the oil and gas wells are opened, the fluid in the well (three phases of oil, gas, and water) enters the wellbore from the formation and flows back to the surface. Especially after acidizing, fracturing and other measures, a certain amount of fluid flow can often be obtained. In the flowback gas of oil and gas wells, the main components are organic gas and acid gas (after acidification). If the organic gas contained in it is discharged directly into the air without treatment, there is a risk of flash explosion, causing serious personal injury and property loss. The acid gas is generally corrosive and has a pungent smell. If it...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C02F1/20B01D53/78B01D53/40C02F103/10
CPCB01D53/40B01D53/78C02F1/20C02F2103/10
Inventor 王方祥刘松孙立波张世录呼桂艳柴宏涛王绍达顾兴军刘玉洲张苏杰李海涛刘楠孙增光董恩雷
Owner CNPC BOHAI DRILLING ENG