MAIN CONTROLLING FACTORS ANALYSIS OF LOW PERMEABLE TIGHT RESERVOIRS OF CHANG 8 FORMATION IN ZHENJING AREA

doi:10.3863/j.issn.1674-5086.2011.01.005

西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (1): 25-30.DOI: 10.3863/j.issn.1674-5086.2011.01.005

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MAIN CONTROLLING FACTORS ANALYSIS OF LOW PERMEABLE TIGHT RESERVOIRS OF CHANG 8 FORMATION IN ZHENJING AREA

DING Xiao-qi ZHANG Shao-nan XIE Shi-wen Yi Chao

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation，Chengdu University of Technology，Chendu Sichuan 610059，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-02-20 Published:2011-02-20

Abstract

Abstract: Chang 8 Formation，Zhenjing area of southwest Ordos Basin is of low permeability，low abundance and rich reserves.Favorable petroleum exploration potential was displayed by many wells with high production which have been drilled in recent years.High qualities reservoirs are sheet sandstones bar in ascend hemicycle of middle period basal level cycles，and fractures with foundational faults can improve permeability of reservoirs extremely，and trend of fractures are northeast.Ferrocalcite cement of late lower cretaceous are controlled by fluctuations of lake floor shape，and weak ferrocalcite cement sandstone are distributed in ups of lake floor shape，and reservoir has fine physical property.Exploration idea and operating procedure of low permeable tight reservoirs of Chang 8 Formation are clarification on the sequence strata and high spots，tracking fractures and sedimentary facies.

Key words: Ordos Basin, Zhenjing area, Chang 8 Formation, low permeability, rules of hydrocarbon accumulation 

CLC Number:

TE122.1

DING Xiao-qi ZHANG Shao-nan XIE Shi-wen Yi Chao. MAIN CONTROLLING FACTORS ANALYSIS OF LOW PERMEABLE TIGHT RESERVOIRS OF CHANG 8 FORMATION IN ZHENJING AREA [J]. 西南石油大学学报(自然科学版), 2011, 33(1): 25-30.

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MAIN CONTROLLING FACTORS ANALYSIS OF LOW PERMEABLE TIGHT RESERVOIRS OF CHANG 8 FORMATION IN ZHENJING AREA

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