Lithologic Reservoirs ›› 2011, Vol. 23 ›› Issue (4): 48-32.doi: 10.3969/j.issn.1673-8926.2011.04.009

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Reservoir characteristics of Archean magmatic rocks in Dongying Sag

GE Zhidan1， WANG Xingzhi1， ZHU Meng2， PU Rui2， WANG Wei3， ZHANG Jinyou4   

  1. 1. Southwest Petroleum University， Chengdu 610500， China； 2. Research Institute of Geologic Exploration and Development， Chuanqing Drilling Engineering Company Ltd.， Chengdu 610051， China； 3. Research Institute of Exploration and Development， Bohai Oilfield， Tianjin Branch of CNOOC， Tianjin 300452， China； 4. Research Institute of Exploration and Development， Daqing Oilfield Company， Ltd.， PetroChina， Daqing 163712， China）
  • Online:2011-08-20 Published:2011-08-20

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Abstract:

Based on core, rock slice, cast andmercury penetration data, the rock types, reservoir space types and reservoir properties of Archean magmatic rock reservoir in Dongying Sag are studied. It is considered that Archean magmatic rock reservoirs are mainly composed of brittle granide, dioritoid and dike rock, the reservoir spaces are mainly fractures, followed by dissolved pores and caverns, and the porosity and permeability both are low. So it belongs to pore-fractured reservoir with lowporosity and lowpermeability. The reservoir space ofmagmatic rock reservoir is mainly controlled by lithology, tectonic disruption and atmospheric fresh water leaching.

Key words: interbeds distribution, remaining oil, Triassic, block one of Tahe oilfield

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