Application and Study on Nonlinear Percolation Area Distribution Range Calculation Method in the Low Permeability Reservoir

Abstract:

Based on the minimum start-up pressure gradient have been obtained from experiment, and the relationship between the minimum starting pressure gradient with maximum starting pressure gradient and the throat radius, first put forward the calculating the limit shear stress, then calculating the maximum starting pressure gradient method. Non-linear seepage corresponding to the pressure gradient range are obtained by regression analysis, nonlinear seepage flow in low permeability reservoir distribution area can be derived. Two well group examples of the Bei301 block of Hailaer oilfield, shows that calculating the method of nonlinear seepage flow area is available, and the results can reflect the symmetry oil well production performance, this method has application value. The On the basis of the formula of pressure gradient between oil wells and injection wells, New method to calculate the limit injection production well spacing is proposed. It is of importance for injection production well spacing in oilfield development plan.

• Periodical: Advanced Materials Research (Volumes 962-965)
• Pages: 905-909
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.962-965.905
• Online since: June 2014
• Authors: Wei Mao, Hong Bing Jia, Dong Xu Yu*, Peng Ju Du
• Keywords: Limit Injection Production well Spacing, Maximum Start-Up Pressure Gradient, Minimum Start-Up Pressure Gradient, Non-Linear Seepage

References

[1] Yanzhang HUANG. Nonlinear percolation feature of low permeability reservoirs [J]. 1997，4(1)：9-14.

[2] Yongmin CHEN; Juan ZHOU; Wen-xiang LIU; Xue-wei LIU. Experimental demonstration of the non-darcy phenomenon during low velocity flow through porous media[J] Journal of Chongqing University(Natural Science Edition). 2000, 23.

[3] Wei XIONG; Qun LEI; Xiangui LIU Pseudo threshold pressure gradient to flow for low permeability reservoirs[J]. Petroleum Exploration and Development. 2009, 36(2): 232-235.

DOI: 10.1016/s1876-3804(09)60123-3

[4] Yu SHI; Zhengming YANG; Yanzhang HUANG. Study on non-linear seepage flow model for low-permeability reservoir[J]. Acta Petrolei Sinica. 2009, 30(5): 731-734.

[5] Bingyu JI; Yingfu HE. Formation pressure distribution of a single well based on low-velocity non-Darcy flow[J]. Acta Petrolei Sinica. 2011，32(3): 466-469.

[6] Chengyuan LU; Jian WANG; Zhi-gang SUN. An experimental study on starting pressure gradient of fluids flow in low permeability sandstone porous media[J]. Petroleum Exploration and Development. 2002, 29(2): 86-89.

[7] Dian-hai SHI. Flow state distribution of areal radial flow in low permeability sandstone reservoir[J] Petroleum Exploration and Development. 2006, 33(4): 491-494.

[8] Xianke HE; CHEN Cheng The calculating method for effectively producing injection-production well spacing of low permeability reservoirs [J]. Xinjiang Petroleum Geology. 2006，33(4)：491-494.

[9] Xianke HE; CHEN Cheng . Establish effective displacement pressure system in low permeability oilfield[J] . Special Oil & Gas Reservoirs. 2006, 13(2): 56-57.