The Exploration Technology of Ordovician Car-bonate Reservoir in Tahe Oilfield

The exploration and development of super-deep Paleozoic carbonate reservoir of fissured-cavity that is regarded as difficult problem of world level has been studied by Northwest Petroleum Bureau,CNSPC in recent years.A series of technologies that have been applied to Paleozoic carbonate reservoirs in Tahe oilfield are developed,such as3D seismic imaging processing and detailed interpretation,carbonate reservoir forecasting and evaluation,the oil and gas recognition as well as acid-fracturing,well test and complete,under-balanced drilling,horizontal well drilling,verti-cal well with lateral drilling,etc.The greater advances and notable economic effectiveness are obtained.