Physical Modelling of Artificial Fracture Conductivity of Glutenite

doi:10.7657/XJPG20210111

Abstract

Abstract:

It is difficult to develop glutenite reservoir due to its complex structure, low porosity, strong heterogeneity and anisotropy. In order to realize the efficient exploitation of glutenite reservoir, the fracture conductivity of glutenite is studied. Through analyzing the factors affecting the fracture conductivity in glutenite, this paper starts from the experiments on proppant and gravel contents and studies the influences of fiber and proppant particle size on fracture conductivity. It is found that there are three contacts for proppants in fractures: contacting with gravel, contacting with gravel and matrix, and contacting with matrix. When the closure pressure is low, the fracture conductivity of glutenite is positively correlated with gravel content, at this time, the fiber has little impact on the conductivity; with the increase of the closure pressure, the fracture conductivity decreases with the gravel content, and the presence of fiber also decreases the conductivity. The conductivity is positively correlated with the content of proppant, and the greater the closure pressure, the weaker the fracture conductivity. If the content of gravel is fixed, the larger the particle size of proppant is, the stronger the flow conductivity will be. To sum up, under a certain closure pressure, the flow conductivity of fractures in glutenite is positively correlated with the contents of gravel and proppant. With the increase of closure pressure, the fracture conductivity tends to decrease.

Key words: glutenite, artificial fracture, conductivity, gravel, proppant, closure pressure

CLC Number:

TE357.14

ZHEN Huaibin, ZHAO Haifeng, WANG Chengwang, LAN Jianli, JI Liang, SUN Hang, WANG Xuan. Physical Modelling of Artificial Fracture Conductivity of Glutenite[J]. Xinjiang Petroleum Geology, 2021, 42(1): 81-87.

Figures/Tables 10

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