塔河地区碳酸盐岩断溶体油藏特征与开发实践

doi:10.11743/ogg20150301

Abstract

Abstract:

Various irregular fractured-vuggy reservoirs were formed along the large fault-karst belts in the area covered by the Upper Ordovician in Tahe area due to multi-phase tectonic deformations and karstifications of the carbonates.Using fine coherence, amplitude change rate, time slice and other properties of high-precision three-dimensional seismic, outcrops, drilling and production data, this paper first presented a theoretical concept of fault-karst trap, and elaborated its forming mechanism and geologic characteristics in this area.The fault-karst reservoirs can be divided into three types by their shapes and controlling factors:banded, sandwich and tabular reservoirs.According to recent development practices, the fault-karst reservoir is a very special reservoir type in this area.The development effectiveness of different fault-karst carbonate reservoirs is quite dissimilar, with the banded ones being the best in development performance.It is of great significance for the petroleum exploration and development of similar reservoirs in the Tarim Basin.

Key words: fractured-vuggy rock mass, fault-karst rock mass, karstification, carbonate, Tahe oilfield, Tarim Basin

CLC Number:

TE122.3

Lu Xinbian, Hu Wenge, Wang Yan, Li Xinhua, Li Tao, Lyu Yanping, He Xinming, Yang Debin. Characteristics and development practice of fault-karst carbonate reservoirs in Tahe area,Tarim Basin[J]. Oil & Gas Geology, 2015, 36(3): 347-355.

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Characteristics and development practice of fault-karst carbonate reservoirs in Tahe area,Tarim Basin

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