Fractural Characteristic and Genesis of Lower Crataceous in Qingxi Oilfield

Xinjiang Petroleum Geology ›› 2008, Vol. 29 ›› Issue (6): 703-705.

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Fractural Characteristic and Genesis of Lower Crataceous in Qingxi Oilfield

ZHOU Xiao-feng^1,2, YU Jun-min³, YANG Shuang⁴, HE Shun-li^1,2

1. Institute of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
2. MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
3. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
4. Research Institute of Petroleum Exploration and Development, Sinopec, Beijing 100083, China

Received:2008-03-17 Published:2020-11-20

Abstract

Abstract: In Lower Crataceous in Qingxi sag of Jiuxi basin occurs a couple of NE-SW and NW-SE trending conjugated bedding-dissected fractures based on core and imaging logging data. The fractures are the major types in Lower Crataceous fractured reservoir in Qingxi sag. According to comprehensive analysis of Lower Crataceous sedimentation and diagenesis and tectonic stress field, a great deal of NE-SW trending bedding-dissected fractures occur in Well Area Long-7 to Long-4 of Kulongshan thrust section and Liugouzhuang thrust section, while in Well Area Long-8 to Long-10 NW-SE trending such fractures are dominant, but the number of the former is predominant. These dominant fractures are formed by initial compaction followed by tectonic stress action.

Key words: Jiuxi basin, Qingnan sag, Qingxi oilfield, bedding-dissected fracture

CLC Number:

P542.33

ZHOU Xiao-feng, YU Jun-min, YANG Shuang, HE Shun-li. Fractural Characteristic and Genesis of Lower Crataceous in Qingxi Oilfield[J]. Xinjiang Petroleum Geology, 2008, 29(6): 703-705.

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Fractural Characteristic and Genesis of Lower Crataceous in Qingxi Oilfield

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