Evaluation method of nano-emulsion fracturing fluid
An evaluation method, nanoemulsion technology, applied in suspension and porous material analysis, color/spectral characteristic measurement, surface/boundary effect, etc., can solve problems such as inability to find nanoemulsion fracturing fluid, affecting the efficiency of crude oil extraction, etc. , to achieve the effect of optimizing formula and increasing oil and gas production
Active Publication Date: 2019-04-05
CHINA UNIV OF PETROLEUM (BEIJING) +2
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Problems solved by technology
At present, there are many kinds of nanoemulsion fracturing fluids in the world, but there is no set of evaluation methods to evaluate the performance of these nanoemulsion fracturing fluids, so the staff cannot find a better nanoemulsion that can achieve better oil production The type of fracturing fluid affects the efficiency of crude oil extraction
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[0064] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art Modifications to various equivalent forms of the present invention fall within the scope defined by the appended claims of the present application.
[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used herein in the description of the application is only for the purpose of describing specific embodiments, and is not intended to limit the application.
[0066] It should be noted that when an element is referred to as being “d...
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The invention discloses an evaluation method for nano-emulsion fracturing fluid. The evaluation method for the nano-emulsion fracturing fluid includes the following steps that tension indices of an oil-water interface of the nano-emulsion fracturing fluid are evaluated according to a first scheduled rule; wetting reversal indices of the nano-emulsion fracturing fluid are evaluated according to a second scheduled rule; particle size value indices of the nano-emulsion fracturing fluid are evaluated according to a third scheduled rule; adsorbing capacity indices of the nano-emulsion fracturing fluid are evaluated according to a fourth scheduled rule; imbibition and recovery efficiency indices of the nano-emulsion fracturing fluid are evaluated according to a fifth scheduled rule; and flowbackrate indices of the nano-emulsion fracturing fluid are evaluated according to a sixth scheduled rule. According to the evaluation method of the nano-emulsion fracturing fluid, the performance of thenano-emulsion fracturing fluid can be evaluated, and an evaluation criterion of the performance of the nano-emulsion fracturing fluid can be provided for workers.
Description
technical field [0001] The invention relates to the technical field of oil exploitation, in particular to an evaluation method of nanoemulsion fracturing fluid. Background technique [0002] At present, my country's crude oil is mostly in tight oil reservoirs. However, due to the low porosity and permeability of tight oil reservoirs, it is difficult to exploit crude oil, so the production degree of tight oil reservoirs is low. [0003] When exploiting crude oil from tight oil reservoirs, workers usually use fracturing fluid to fracturing the reservoir to achieve crude oil extraction. Workers often add surfactants to fracturing fluids to improve the production of tight oil reservoirs. Adding surfactants to fracturing fluids can increase the relative permeability of crude oil in reservoirs, thereby increasing crude oil production and improving tight oil reserves. layer utilization. [0004] Among them, nanoemulsion, as a surfactant, can form nanoemulsion fracturing fluid wit...
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Login to View More IPC IPC(8): G01N5/02G01N13/02G01N15/02G01N15/08G01N21/33G01N33/00
CPCG01N5/02G01N13/02G01N15/02G01N15/082G01N21/33G01N33/00G01N2013/0208
Inventor 姚二冬左洁周福建梁星原李奔梁天博曲鸿雁李秀辉王崇文李源
Owner CHINA UNIV OF PETROLEUM (BEIJING)