无水压裂液技术研究进展及前景展望

Research progress and prospect of the waterless hydraulic fracturing technology

目前,国内外的油田主要采用水力压裂技术进行增产改造,但常规水力压裂技术始终面临水资源大量消耗和压裂后相关污染的难题,而且不利于水敏性等非常规油气藏的开发,因此常规水力压裂技术的应用受到极大的限制.无水压裂液技术可以有效地解决上述问题,但国内无水压裂液技术应用较少,理论研究相对缺乏,再加上我国非常规油气资源储量丰富,但水资源相对缺乏,若能够突破无水压裂液的技术难关,则使用无水压裂液技术将为我国非常规油气资源的开发带来极大的经济和环境效益.本文通过调研国内外资料,介绍了目前国内外无水压裂液技术的研究现状,分析了国内外常用的几种压裂液技术,主要介绍了二氧化碳类、醇基类以及烃类无水压裂液技术特点,总结分析了各自的优势及问题,深入研究了液态CO_2压裂液、超临界CO_2压裂液、醇基压裂液、油基压裂液以及低碳烃压裂液,并对其工作机理做了介绍.最后,本文总结了目前无水压裂液研究的重点及应用时的关键问题,为无水压裂的理论研究及应用提供了一定的参考价值.

Presently,However,international oilfields mainly adopt hydraulic fracturing technology to stimulate the oil and large of gas production.the conventional and hydraulic pollution fracturing after technology is is always not faced with to the the problem of amount of water consumption and related fracturing,and it conducive fracturing development unconventional oil gas reservoirs.So the application of conventional hydraulic the technology is greatly limited.of The waterless hydraulic hydraulic fracturing oil fracturing technology can the with effectively theoretical the solve above problems.But the application where waterless technology resources is less,and research is relatively water short in If China the the reserve of unconventional of and gas is abundant relative then lack of resources.technological difficulties non-aqueous fracturing fluids can be broken to through,non-aqueous fracturing fluid technology resources will bring significant Based economic and environmental benefits the development of unconventional introduces oil and gas in China.on the investigation of the domestic analyzes and foreign data,this used paper the research status This on non-aqueous mainly fracturing fluid technology and several of commonly fracturing fluids fluid technologies.such article introduced the characteristics of several fluid kinds waterless fracturing technical,as carbon and dioxide fracturing fluid,alcohol based fracturing and hydrocarbon fluid,fracturing fluid,including their strengths weaknesses.The working mechanism of liquid CO2 fracturing supercritical CO2 fracturing fluid,alcohol based fracturing fluid,oil based fracturing fluid and low carbon hydrocarbon and fracturing problems fluid is also studied in the paper.waterless Finally,this paper summarizes The the key points in research reference direction the key in the and application practical of the fracturing waterless fluid.paper can provide some value for the theoretical research application of the hydraulic fracturing.