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Comprehensive Evaluation of Fractures in Volcanic Reservoirs of Zhongguai Swell,Junggar Basin(PDF)

《新疆石油地质》[ISSN:1001-3873/CN:65-1107/TE]

Issue:
2017年06期
Page:
693-
Research Field:
Publishing date:

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Title:
Comprehensive Evaluation of Fractures in Volcanic Reservoirs of Zhongguai Swell,Junggar Basin
Author(s):
FAN Cunhui1 DUN Yahang1 ZHANG Wei2 LI Lianqing1 DENG Yi2 LI Zhi1
(1.Southwest Petroleum University, a.Sichuan Key Laboratory of Natural Gas Geology; b.School of Geoscience and Technology, Chengdu, Sichuan 610500, China2.Kuqa Oil and Gas Development Department, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China)
Keywords:
Junggar basin Zhongguai swell Carboniferous volcanic reservoir fracture characteristic comprehensive evaluation
PACS:
TE221.222
DOI:
10.7657/XJPG20170610
Abstract:
Fractures are developed in the Carboniferous volcanic reservoir of Zhongguai swell in the northwestern margin of Junggar basin. To identify fracture distribution and its influence on hydrocarnon migration and accumulation, the paper studies fracture characteristics and their controlling factors based on the data of core, thin section, logging and lab analysis, and performs comprehensive fracture evaluation by using logging technology, rock failure degree theory and seismic detection. The study shows that the Carboniferous volcanic reservoir in Zhongguai swell is dominated by high-angle structural shear fractures and vertical fractures, both of which are mostly semi-filling or unfilling. The degree of the fracture dvelopment is mainly controlled by lithology, structure location and weathering and leaching, whose azimuth mainly exhibits near EW, NW-SE,NE-SWand SN directions. The fractures in the volcanic reservoir are mainly distributed in the center and eastern slope Zhongguai swell, and District Wuba. Finally, combining hydrocarbon accumulation rules in the volcanic reservoir with the actual exploration, the paper indicates that the middle part of Zhongguai swell and District Wuba should be the favorable target areas for next exploration.

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Last Update: 2017-12-08