| Citation: | LU Li, CHEN Ying, XU Tingting, ZHANG Xiaohu. Study and Application of Stimulation Fluid for Shale Reservoirs[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(2): 111-116. doi: 10.3969/j.issn.1001-5620.2016.02.024
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Reservoir shalesare generally brittle and full of naturalfractures and beddings.They have low porosity and extremely low matrix permeability.Fracturing of shale reservoirs in the Sichuan Basin has been done mainly with slick water or "slick water plus linear gel" at high volume and high flow rate.Based on the nature of the shale reservoirs,an SD conventional slick water fracturing fluid and an SD linear gel for shale gas operation have been developed.The SD slick water fracturing fluid and the SD linear gel are of low friction,low damage to reservoir permeability and high inhibitive capacity.In field applications,the SD slick water fracturing fluid and the SD linear gel demonstrated good salt resistance,stable properties,and reduced flow friction.Both were very easy to prepare and the use of water was highly efficient because the fracturing fluid can be recovered for reuse.With the application of the SD slick water fracturing fluid,high salinity flowback fracturing fluids can be recovered for reuse,satisfying the needs for economic and environmentally friendly development of shale gas.
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