The major types of reservoir in the Tahe Oilfield Ordovician is fractured-vuggy reservoirs,but porosity on cores can form well reservoirs and can gain flow of hot gas in industry after acid-fracture.

• 塔河油田奥陶系碳酸盐岩储层主要为一套岩溶缝洞型储层,但在岩芯上可见孔隙发育层段,经酸化压裂可获得工业油气流。