Application of integrated data interpretation in prediction for the Triassic reservoirs in Tahe oilfield

The distribution and characteristics of the Triassic reservoirs in Tahe oilfield was studied based on interpretation of geologic, well logging, and seismic data. The reservoirs of the middle and lower Triassic intervals are controlled by structures. Therefore the focus of exploration for the Triassic hydrocarbon reservoirs should be paid on structurally entrapped low amplitude reservoirs. The investigation region should be extended to the southeast part of the survey area with emphasis on thorough investigation of the structural traps in the middle and lower intervals in block one of Tahe oilfield and wells should be placed in combination with seismic amplitude anomaly analysis. The sand body of the middle Triassic Akekule Formation the fourth member grows well in northwest part of the survey area. We should pay high attention to it because its updip wedgeout lies in the oilfield, favorable for forming lithological traps. Based on calculation of reserves, the author believes that no well, especially horizontal well should be placed in block two of Tahe oilfield.