缝洞型碳酸盐岩油藏缝洞单元划分方法研究—以塔河油田奥陶系油藏主力开发区为例

doi:10.11743/ogg20070622

Abstract

Abstract:

Fractured-vuggy reservoirs originated from the development of paleo-karst fractured-vuggy system are the basic geological units for hydrocarbon accumulations of fractured-vuggy type.Importance should be attached to the connectivity within a fractured-vuggy reservoir and that among different fractured-vuggy reservoirs during the development of this kind of reservoirs,i.e.fractured-vuggy units are the basic development units of fracturedvuggy pools.However,both domestic and overseas literatures failed to offer a clear definition for fractured-vuggy reservoir and fractured-vuggy unit and the research on fractured-vuggy unit division still needs to be carried on. Taking the Ordovician fractured-vuggy pool in Tahe oilfield as an example,this paper presents basic concept and distribution mode for fractured-vuggy units and proposes principles and methods for their division.After the study on fractured-vuggy reservoir distribution,fluid properties and well productivity and inter-well connectivity in Tahe oilfield,the paper defines fifteen fracture-vug units in the principle producing area of the field,providing useful references for further development adjustment and management of the field.

Key words: fracture-vug unit, fractured-vuggy reservoir, carbonate rock, Tahe oilfield

CLC Number:

TE121.1

Chen Zhihai, Ma Xujie, Huang Guangtao. Research on the fracture-vug unit division of fractured-vuggy carbonate rock oil pools—an example from the Ordovician oil pools in the principle producing area of Tahe oilfield[J]. Oil & Gas Geology, 2007, 28(6): 847-855.

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Research on the fracture-vug unit division of fractured-vuggy carbonate rock oil pools—an example from the Ordovician oil pools in the principle producing area of Tahe oilfield

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