Water fracturing has been recognized as the key technologies for commercial exploitation of the shale, and the fracturing design are based on the analysis of *** article studies Longmaxi exposures in southeast of Chon...
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Water fracturing has been recognized as the key technologies for commercial exploitation of the shale, and the fracturing design are based on the analysis of *** article studies Longmaxi exposures in southeast of Chongqing,and carries on experiments to analysis the feasibility of the fracturing from the aspect of *** results show that the shale is well bedded,tight,low porosity and low permeability in this *** it needs to be *** analysis of the mineral components shows that Longmaxi shale has a high content of brittle minerals,such as quartz and carbonate,and the content of these brittle minerals range from 49%to 65%,with an average of 57%.While the clay mineral content is low,and there is no kaolinite or montmorillonite which contain serious hydration expansion,on the basis of ***,the shale brittleness coefficient calculated by the mineral composition and dynamic elastic parameters range from 49%to 77% and the average brittleness coefficient is higher than 57%,which shows the formation is *** with the successful exploitation of the North American shale reservoir,Longmaxi shale in southeast of Chongqing is fit to fracturing *** to the North American shale fracturing practical experience,we suggest that the rock brittleness should be taken into consideration in the fracturing design process,and the fracturing fluid should be with large volume of fluid,low proppant content and less proppant consuming.
The pore structure of reservoir not only influences oil and gas reserves,but also has an effect on well productivity and ultimate recovery *** paper discusses the fractal feature of pore structure based on the capilla...
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The pore structure of reservoir not only influences oil and gas reserves,but also has an effect on well productivity and ultimate recovery *** paper discusses the fractal feature of pore structure based on the capillary pressure data of mercury withdrawal and mercury ***,the paper calculates the fractal dimension of pore structure of He8 zone in Sulige gas *** study results show that fractal feature of mercury injection capillary pressure curve has a property of two-stage with an obvious bend, which shows the double-porosity *** fractal feature of mercury withdrawal of capillary pressure curve is *** feature of capillary pressure curve has the characteristics of completeness, and its measuring scale ranges from the maximum injection pressure to the minimum withdrawal pressure. The measuring scale and measuring object have a good correlation property;Mercury injection fractal dimension D,is closely related to slanting degrees and median *** injection fractal dimension D doesn't have any relation to other basic parameters. Mercury withdrawal fractal dimension D relates to permeability and mercury withdrawal *** study shows that,by the analysis of D and D which can have a good reflection of microscopic pore structure, a convenient and effective way is obtained for the research on the microscopic heterogeneity of reservoir pore structure.
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