Chen Mian, Jin Yan. Shale Gas Fracturing Technology Parameters Optimization Based on Core Analysis[J]. Petroleum Drilling Techniques, 2012, 40(4): 7-12. DOI: 10.3969/j.issn.1001-0890.2012.04.002
Citation: Chen Mian, Jin Yan. Shale Gas Fracturing Technology Parameters Optimization Based on Core Analysis[J]. Petroleum Drilling Techniques, 2012, 40(4): 7-12. DOI: 10.3969/j.issn.1001-0890.2012.04.002

Shale Gas Fracturing Technology Parameters Optimization Based on Core Analysis

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  • Received Date: January 22, 2012
  • Revised Date: July 01, 2012
  • Specificities of shale gas reservoirs are usually practically common.It’s important to conduct a systematic laboratory experiment before the fracturing treatment of a new shale gas well to enhance the pertinency of development strategy.A combination method of laboratory experiment and theoretical analysis was used.Mineral composition,mechanical parameters and micro-imaging results for shale gas reservoirs in North America and South China were presented.Calculation methods of closure pressure and fracture width for shale fracturing were derived and the brittleness index,closure pressure and ideal fracture width were calculated for a real well case.Optimization principles of fracture fluid system,viscosity,pump rate and proppant type were introduced and indoor simulating fracture was conducted on black shale samples.The result shows that core analysis technology can provide necessary support for the optimization of fracturing parameter and the mechanical properties of Longmaxi shale are much more similar to that of Haynesville shale.It tends to generate more complex fracture networks with low-viscosity fluid and high pump rate.Case calculation results show that hydraulic fracture parameters selected from core analysis results have a practical advantage and can improve the fracturing effect.
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