Fracture characterization using diffraction attributes in tight sandstone reservoirs: A case study from Keshen Gas Field, Tarim Basin

Liang, Yao and Wang, Zhenli and Rotimi, Oluwatosin J. and Li, Xueliang and Chen, Guiting and Shi, Hu and Cui, Rui (2018) Fracture characterization using diffraction attributes in tight sandstone reservoirs: A case study from Keshen Gas Field, Tarim Basin. Society of Exploration Geophysicists. ISSN 1949-4645

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Abstract

Reservoir characterization is indispensable in the development of the Cretaceous structural fractured Bashijiqike tight sandstone reservoir formation, which is the main production zone and known to exhibit high structural variability imparting on production at different scales. We performed an improved workflow based on diffraction extraction and analysis to characterize the fractures especially in locations proximal to the wellbore. Diffraction attributes significantly provide more details in the area, which are proven by three well FMI images and dipmeter logs. The results show that structural fractures in the study area are dominated by the upright shearing stress forming fractures with medium to high angles. The tending direction is also delineated to be similar despite the significant well offset, which is an indication of the underlying tectonic framework responsible for the overall architecture of this section of the basin. We opine due to our success that the proposed approach may be helpful to describe the distribution and direction of fractures in naturally fractured reservoirs tied by the well logs.

Item Type:	Article
Uncontrolled Keywords:	diffraction, fractures, reservoir characterization, case history, unconventional
Subjects:	T Technology > T Technology (General) T Technology > TP Chemical technology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Patricia Nwokealisi
Date Deposited:	25 Apr 2019 10:53
Last Modified:	25 Apr 2019 10:53
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/12622

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