--> ABSTRACT: Exploration of Hydrocarbons in Fractured Lacustrine Shale Reservoirs of Jiyang Depression, Eastern China, by Qi Li, Yuanlin Pan, Hengzhi Wu, and Renhua Kang; #90906(2001)

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Qi Li1, Yuanlin Pan2, Hengzhi Wu2, Renhua Kang3

(1) Shengli Petroleum Administeration, Dongying City, Shandong Province, China
(2) Shengli Petroleum Administration Bureau, Dongying City, Shangdong Province, China
(3) Shengli Petroleum Administration Bureau, Dongying City, Shandong Province, China

ABSTRACT: Exploration of Hydrocarbons in Fractured Lacustrine Shale Reservoirs of Jiyang Depression, Eastern China

Oil production from fractured, self-sourced lacustrine shales occurs in many areas of Jiyang Depression in Bohai Gulf basin, Eastern China, the Hydrocarbon potential of such unconventional hydrocarbon sources is very immense, however, production from these reserves is meagre. Mobility of in-place hydrocarbons within shales is controlled by a network of naturally existing fractures which act as storage as well as conduits for flow. Commercial exploitation of fractured shales therefore calls for proper reservoir description. This includes understanding of mechanics of fracturing and locating areas of permeability development. This paper analyzes the available data on fractured shale reservoirs of Jiyang Depression and suggests various alternatives for their commercial exploitation. It highlights the importance of understanding the origin and identification of natural fractures within shales based on logs, cores, pressure transient tests, production datas. The integrated exploration technique for the fractured shale reservoir has been performed, including 3-D P-wave seism which cover 48 km2, Log analysis includes FMI, mineral-based error minimization (ELAN), NMR T2 processing, and dipole shear wave anisotropy. A shear wave vertical seismic profile was acquired after casing was set.

AAPG Search and Discovery Article #90906©2001 AAPG Annual Convention, Denver, Colorado