Oil and gas distribution and controlling factors of Mesozoic in Mahuangshan area

  • DONG Shi-tai ,
  • ZHANG Lixin ,
  • XU Guangcheng ,
  • SUN Rong
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  • 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; 2. NO. 2 Oil Production Plant, Changqing Oilfield Company, PetroChina, Qingyang 745100, China

Online published: 2009-09-16

Abstract

The Mesozoic in Mahuangshan area has a fine hydrocarbon exploration potential in the western margin of Ordos Basin. Based on the analysis of regional structure, core observation and logging, the hydrocarbon distribution, pool forming process and the main controlling factors in different tectonic zones are discussed. It is suspected that lithologic and lithologic-structural reservoirs mainly developed in the structurally stable zones, while fault block and fault-nose reservoirs mainly developed in faulted zones. Oil and gas distribution has a large vertical span with oil on the top and water at the bottom. Oil and gas in the plane mainly distributed in the high structural area or in the axial region of fault anticline, and are mainly controlled by sedimentary facies, diagenesis and tectonic control. The sand of weak cementation and strong dissolution is hydrocarbon-rich site in vertical direction, and so is the sand in distributary channel with strong hydrodynamic in high structural area in the plane.

Cite this article

DONG Shi-tai , ZHANG Lixin , XU Guangcheng , SUN Rong . Oil and gas distribution and controlling factors of Mesozoic in Mahuangshan area[J]. Lithologic Reservoirs, 2009 , 21(3) : 60 -64 . DOI: 10.3969/j.issn.1673-8926.2009.03.012

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