New fracturing criteria on low permeability sandstone reservoirs

被引：0

作者：

Du S. ^{[1
,2
]}

Guan P. ^{[1
,2
]}

Shi Y. ^{[1
,2
]}

Fang Y. ^{[1
,2
]}

Sheng Y. ^{[1
,2
]}

Zhang Z. ^{[1
,2
]}

Liang Y. ^{[1
,2
]}

Lan K. ^{[3
]}

Wang Z. ^{[1
,2
]}

Zhao Y. ^{[1
,2
]}

Shi J. ^{[1
,2
]}

Taskyn A. ^{[1
,2
]}

机构：

[1] School of Earth and Space Sciences, Peking University, Beijing

[2] Oil and Gas Institute, Peking University, Beijing

[3] School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing

来源：

Earth Science Frontiers | 2017年 / 24卷 / 02期

关键词：

Conventional log data; Criterion; Finite element; Fracturing capability; Low permeability;

D O I：

10.13745/j.esf.2017.02.025

中图分类号：

学科分类号：

摘要：

Brittleness index method was mostly used to evaluate the distinction of rock fracturing though the concept and calculation process of brittleness index is complex and absence of geological basis, so the estimation of the fracturing capability was mostly staying in the level of semi-quantitative, which is not the quantitative evaluation of the fracturing capability based on the rock failure mechanism, so the applicability and accuracy have great limitations. Based on the reality of the lack of a reliable criterion for fracturing capability in low permeability sandstone reservoir, a geological modeling of the fracturing test area in Daqing oilfield was performed. By the approach of finite element simulation, the natural fracture prediction mode was improved, which changed the original “vertical profile fracture prediction” to “horizontal layer fracture prediction” and the method of “accumulation from each horizon” was firstly put forward. Fracture of each small layer was simulated, which realized the purpose of quantitative fracture prediction in the three-dimensional space. Four kinds of new criteria named “actual fracturing index (AFI)”, “potential fracturing index (PFI)”, “fracturing index (FI)”, “logging fracturing index (LFI)” were all firstly proposed. The conclusion was fit to the results of downhole micro-seismic technique. This will provide important scientific basis for enhancing the recovery efficiency in low permeability reservoir. © 2017, Editorial Office of Earth Science Frontiers. All right reserved.

引用

页码：257 / 264

页数：7

共 5 条

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