Research progress and prospect of the waterless hydraulic fracturing technology
2017
Presently, international oilfields mainly adopt hydraulic fracturing
technology to stimulate the oil and gas production. However, the conventional
hydraulic fracturing technology is always faced with the problem of
large amount of water consumption and related pollution after fracturing,
and it is not conducive to the development of unconventional oil and
gas reservoirs. So the application of conventional hydraulic fracturing
technology is greatly limited. The waterless hydraulic fracturing
technology can effectively solve the above problems. But the application
of waterless hydraulic fracturing technology is less, and the theoretical
research is relatively short in China where the reserve of unconventional
oil and gas resources is abundant with the relative lack of water
resources. If the technological difficulties of non-aqueous fracturing
fluids can be broken through, then non-aqueous fracturing fluid technology
will bring significant economic and environmental benefits to the
development of unconventional oil and gas resources in China. Based
on the investigation of the domestic and foreign data, this paper
introduces the research status on non-aqueous fracturing fluid technology
and analyzes several commonly used fracturing fluid technologies.
This article mainly introduced the characteristics of several kinds
of waterless fracturing fluids technical, such as carbon dioxide fracturing
fluid, alcohol based fracturing fluid and hydrocarbon fracturing fluid,
including their strengths and weaknesses. The working mechanism of
liquid CO 2 fracturing fluid, supercritical CO 2 fracturing fluid, alcohol based fracturing fluid, oil based fracturing
fluid and low carbon hydrocarbon fracturing fluid is also studied
in the paper. Finally, this paper summarizes the key points in research
direction and the key problems in the application of the waterless
fracturing fluid. The paper can provide some reference value for the
theoretical research and practical application of the waterless hydraulic
fracturing.
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