SIGNIFICANCE AND DISCOVERY HISTORY OF TAHE OILFIELD OF THE TARIM BASIN

Tahe oilfield is located in the south part of Arekule arch of Shaya uplift in Tarim Basin,which was discovered in 1990s,During exploration and production of Tahe oilfield,regularity of hydrocarbon accumulation was continuously recognized.Taking the large paleo-slope near main source rocks as the exploration targets and discovering large primary reservoirs closing to large faults and uncomformities are the basic strategy for petroleum exploration in the area.Much technology,such as identification and prediction of accumulation,protection of reservoir,and acidizing and fracturing of oil-bearing formation,was established and developed.Tahe oilfield is first oilfield of superdeep unconventional reservoirs of marine carbonates in China.It contributed a lot for the economic development in Xinjiang and showed important significance for development strategy of petroleum industry.