Title: Characteristics of low-order accommodation zone and its reservoir formation model in Xin 183 Block, Dongying Sag, Eastern China

Authors: Fei Tian; Qiang Jin; Duanping Wang; Yong Yang

Addresses: School of Geosciences in China, University of Petroleum, Qingdao, 266580, Shandong Province, China ' School of Geosciences in China, University of Petroleum, Qingdao, 266580, Shandong Province, China ' Shengli Oilfield Branch Company, SINOPEC, Dongying, 257061, Shandong Province, China ' Shengli Oilfield Branch Company, SINOPEC, Dongying, 257061, Shandong Province, China

Abstract: This paper investigates the nature of an East-West strike convergent-overlapping accommodation zone in Xin 183 fault block and its influence on the hydrocarbon distribution based on a study of the fault geometry, kinematics and dynamics using 3-D seismic data, well testing data and hydrocarbon distribution data. First, a geometrical analysis indicates that the structural profile of the major fault on the west side and its associated secondary faults has a multi-stage reverse Y appearance; the profile tectonic style on the east side has a cabbage-like appearance. Second, the observed fault activities show that when the activity of the west main fault became weak, the displacement was transferred to east main fault and secondary faults. Third, a dynamical analysis demonstrates that the stress field of the area is left-lateral extensional shear. The reservoir formation model of Xin 183 accommodation zone is constructed, and the preferred hydrocarbon locations are pointed out. [Received: September 23, 2012; Accepted: July 12, 2013]

Keywords: accommodation zone; structural style; structural stress properties; progressive exploration; oil production; Dongying sag; China; reservoir formation models; modelling; hydrocarbon distribution; fault geometry; kinematics; dynamics; 3D seismic data; well testing; fault blocks; geological faults; oilfields.

DOI: 10.1504/IJOGCT.2015.069618

International Journal of Oil, Gas and Coal Technology, 2015 Vol.9 No.4, pp.359 - 378

Received: 17 Oct 2012
Accepted: 12 Jul 2013
Published online: 29 May 2015 *

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