A DISCUSSION ON THE OIL CONTROLLING MECHANISMS OF CARBONATE ROCK RESERVOIRS OF ORDOVICIAN IN LUNNAN AREA, TARIM BASIN
轮南奥陶系碳酸盐岩储集体控油机理探讨

The carbonate rocks of Ordovician in Lunnan area are generally not reservoirs,but the deuterogenous karstificated holes,pores and seams can serve as valid reservoirs.On the base of analyzing the controlling factors of the development of karsts and the stages of karstification,the distribution of two series of three types reservoirs of Ordovician in Lunnan area was studied,and the differences between them were also discussed by the authors.Through analyzing the distributing rules of the oil and gas reservoirs of Ordovician and the special occurring state of the liquids in the carbonate rocks,it is believed that the distribution of the oil and gas in Ordovician in Lunnan area is generally controlled by the development of the reservoirs,and the distinct regional distributing rules of the oil and gas are mainly caused by the varying insulated and closed oil(gas) or water in different types of reservoirs.