Chemical multi-component preparation and injection method and multi-component static mixing device
A chemical flooding, multi-component technology, applied in the fields of production fluids, wellbore/well components, earth-moving drilling, etc., can solve the problems of reduced viscosity of chemical additives, large equipment investment, and large area of the centralized deployment system of additives. Achieve the effect of reducing shearing effect, reducing viscosity reduction rate and preventing viscosity drop
Active Publication Date: 2007-10-24
大庆德美特尔能源科技有限公司
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Problems solved by technology
The disadvantages of this process are: (1) The target liquid used in the whole system is a unified large formula, and the target liquid cannot meet the needs of individualized geological schemes of injection wells in different blocks and formations at the same time, and individualized injection cannot be realized; (2) The centralized auxiliary agent configuration system occupies a large area and requires a large investment in equipment; (3) The target liquid of the original process is generally configured in a mixing tank and then stored. When necessary, the target liquid is pressurized by a high-pressure pump and injected into each oil production well , which adversely affects the performance of the chemical additive, resulting in a decrease in the viscosity of the chemical additive
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[0033] Figure 1 is the process flow chart of the chemical flooding multi-component injection process. In the oilfield, various chemical flooding agents are stored in different chemical flooding aid storage tanks according to a certain concentration; When mining, firstly, according to the geological requirements of the injection well, select the formula of the target liquid for the injection well; according to the requirements of the formula, output the chemical flooding aid from the corresponding storage tank of the chemical flooding aid, various After the chemical flooding aids enter the booster pump to pressurize, they are respectively input to the corresponding meter for metering. The metered various chemical flooding aids are fully mixed by the mixing device to become the target liquid, and finally the target liquid is delivered into the injection well.
[0034] When mixing various chemical flooding aids after metering, multiple flow mixers can be selected, and a multi-ele...
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The present invention discloses polyelement chemical displacement compounding and injecting process and static polyelement mixer. Several kinds of chemical displacement in certain concentration are first pressurized with separate high pressure pumps and then mixed in one static polyelement mixer into target displacement and injected into wells. The present invention realizes personalized recipe for single well injection based on different geological conditions and has no traditional concentrated compounding system to save area and cost. The static polyelement mixer can mix several kinds of chemical assistant in certain order and ensure the high dispersivity and low viscosity reducing rate and no bad reaction produced during mixing.
Description
technical field [0001] The invention relates to auxiliary agent preparation equipment for oilfield tertiary oil recovery and a chemical flooding multi-component dispensing process, in particular to a chemical flooding multi-component dispensing process and a multi-component static mixed flow device used therein. Background technique [0002] At present, in the late stage of oilfield exploitation, it is necessary to mix several chemical additives in a certain proportion to become the target fluid, and then inject the target fluid into the formation for oil displacement in order to obtain a higher recovery rate. Among them, the mixing process of various chemical additives and the injection process of the target liquid are the key to ensure the development effect. In addition, the mixing equipment of chemical additives is also directly related to the quality of the target liquid. [0003] The traditional mixing process and injection process of chemical additives is to mix vario...
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IPC IPC(8): E21B43/22
Inventor 高雁鸣侯华业
Owner 大庆德美特尔能源科技有限公司