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Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

For the geological characteristics of ultra-low permeability and partial tight oil reservoirs in Jidong G5 block, CO2 injection huff and puff development is a very effective development method, in which the parameters of fracturing and fractures are the key issues. Considering the nonlinear seepage characteristics of ultra-low permeability, the variable starting pressure gradient of the CO2 huff and puff process and the coupling effect of the time-varying permeability caused by the alternating change of formation pressure during injection and production was considered. On this basis, the influences of horizontal well fracture series, distribution mode, length, conductivity and other parameters on CO2 diffusion and huff and puff effect were studied and optimized. Result Showes that the influence of the pressure gradient is much greater than the time-varying permeability. At the same time, considering the variable starting pressure and the time-varying permeability, the effect of staggered fractures is better. The optimal number of fractures is 8, the fracture length is 150 m, and the fracture conductivity is 20 μm²· cm. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Shenzhen University Humanities & Social Sciences is the property of Journal of Shenzhen University (Humanities & Social Sciences) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Central China Normal University is the property of Huazhong Normal University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)