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Slug type gas injection oil production process based on steam and flue gas of thermal recovery boiler

A flue gas, slug-type technology, applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., can solve the problem of small steam sweeping area, weak steam displacement force, difficult process of burning oil layers, etc. problem, to achieve the effect of improving the development effect

Pending Publication Date: 2021-12-03
莆田市城厢区鑫翀信息技术咨询服务中心
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Problems solved by technology

[0003] The main development methods of heavy oil include steam huff and puff, steam flooding and burning oil layers, etc. However, with the extension of development time, the formation energy is insufficient, and it is difficult to recover undeveloped reserves. The replacement force is not strong, the implementation process of burning oil layers is difficult, and it is difficult to control underground combustion, etc., which restricts the development effect of heavy oil

Method used

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  • Slug type gas injection oil production process based on steam and flue gas of thermal recovery boiler

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Embodiment Construction

[0026] In describing the present invention, it is to be understood that the terms "longitudinal", "transverse", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate an orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these f...

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Abstract

The invention discloses a slug type gas injection and oil production process based on steam and flue gas of a thermal recovery boiler, and belongs to the technical field of thickened oil development processes. The problem that the production effect of an existing thickened oil development process method is unsatisfactory is solved. The slug type gas injection and oil production process is technically characterized in that an injection well is included, a sleeve is arranged in the injection well and used for fixing a stratum, an oil pipe is arranged in the sleeve, the oil pipe is used for injecting steam and flue gas at intervals, and the method comprises the following steps that (1) the temperature of the flue gas exhausted by a boiler is lowered, and the steam generated by the boiler enters the oil pipe; (2) dust in the flue gas is removed, and chemical gas is prevented from corroding the oil pipe; (3) moisture in the flue gas is removed; (4) pressure is provided for the flue gas to enter the oil pipe; (5) water is removed from the flue gas again; and (6) the flue gas is pressurized and effectively recycled, emission pollution is reduced, and the method has the advantage that the thickened oil development effect can be improved.

Description

technical field [0001] The invention relates to the technical field of heavy oil development technology, in particular to a slug type gas injection oil recovery process based on steam and flue gas of a thermal recovery boiler. Background technique [0002] The task of oil production engineering is to make oil and gas flow into wells smoothly through a series of engineering and technical measures that can act on oil reservoirs, and the wells can efficiently lift them to the ground for separation and metering; its goal is to economically and effectively improve oil and gas. Crude Oil Recovery. There are different development methods for different oil properties. Among them, heavy oil has abundant reserves in Liaohe, Shengli, Tahe and other oil fields in my country. The most important way to develop heavy oil is to reduce viscosity and improve its flow. performance, so as to improve the degree of recovery and development effect. [0003] The main development methods of heavy o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24E21B43/16
CPCE21B43/24E21B43/168E21B43/164
Inventor 张翀
Owner 莆田市城厢区鑫翀信息技术咨询服务中心
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