Seepage model and productivity prediction of fractured wells in shale gas reservoirs with discontinuous micro-fractures

被引：0

作者：

Qi Q. ^{[1
]}

Zhu W.-Y. ^{[1
]}

Deng J. ^{[1
]}

Ma Q. ^{[1
]}

机构：

[1] School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing

来源：

Gongcheng Kexue Xuebao/Chinese Journal of Engineering | 2016年 / 38卷 / 03期

关键词：

Fractures; Mathematical models; Productivity; Seepage; Shale gas;

D O I：

10.13374/j.issn2095-9389.2016.03.002

中图分类号：

学科分类号：

摘要：

A dual-porosity medium with micro-fractured spherical matrix blocks was achieved on the basis of the structure characteristics of nano-micro pores and micro-fractures in shale gas reservoirs. The Laplace space solution of the dimensionless bottom hole pressure of fractured well production was obtained in consideration of the seepage, diffusion and desorption mechanism of shale gas and applying the Laplace transform and the Stehfest numerical inversion. Type curves of dimensionless production were plotted and the influencing factors of the type curves were identified. The results show that the matrix surface improves gas transfer from the matrix medium to the fracture network due to matrix micro fractures. Increasing the permeability and length of micro fractures accelerate the productivity significantly. © All right reserved.

引用

页码：306 / 313

页数：7

共 20 条

[1]

Yang F., Ning Z.F., Hu C.P., Et al., Characterization of microscopic pore structure in shale reservoirs, Acta Pet Sin, 34, 2, (2013)

[2]

Somdergeld C.H., Ambrose R.J., Rai C.S., Et al., Micro-structural studies of gas shales, SPE Unconventional Gas Conference, (2010)

[3]

Javadpour F., Fisher D., Unsworth M., Nanoscale gas flow in shale gas sediments, J Can Pet Technol, 46, 10, (2007)

[4]

Wang F.P., Reed R.M., Pore networks and fluid flow in gas shales, SPE Annual Technical Conference and Exhibition, (2009)

[5]

Zhu W.Y., Ma Q., Deng J., Et al., Mathematical model and application of gas flow in nano-micron pores, J Univ Sci Technol Beijing, 36, 6, (2014)

[6]

Deng J., Zhu W.Y., Ma Q., A new seepage model for shale gas reservoir and productivity analysis of fractured well, Fuel, 124, (2014)

[7]

Wu Y.S., Morids G.J., Bai B., Et al., A multi-continuum model for gas production in tight fractured reservoirs, SPE Hydraulic Fracturing Technology Conference, (2009)

[8]

Dehghanpour H., Shirdel M., A triple porosity model for shale gas reservoirs, SPE Canadian Unconventional Resources Conference, (2011)

[9]

Warren J.E., Root P.J., The behavior of naturally fractured reservoirs, Soc Pet Eng J, 3, 3, (1963)

[10]

Ozkan E., Brown M., Raghavan R., Et al., Comparison of fractured horizontal-well performance in conventional and unconventional reservoirs, SPE Western Regional Meeting, (2009)

← 1 2 →