The Akekule Ordovician Carbonate Paleokarst Reservoir Distribution And Trap Research

[Abstract]With Karst Geology, Reservoir Geology, Structure stress strain analysis and new theory of Geology of Petroleum, the paper general research tectoclase, degree of fossil karst reservoir upgrowth and distributing characteristic in Akekule uplift. Adopt the whole analysis combine the emphases area research, oil geology generalresearch combine subtle seismic interpretation and special interpretation, and looking for the seismic re~ponse on the fractures and karst, confirm favorable trap, and provide the drilling map and exploration map by generalresearc~.The paper summarize characteristic of field of stress and the relevant rule of tectonization, and analysising tectolase and karst of controlling in the different tectonization according to the researching of characteristic of teconization and deformation terms in the Akekule uplift. There are three group fault in Ordovician of this area, and the main meridional fault is tension fault. Cranny are strong filled that formed in early Hercynian. the fracture are preserving well that formed in late Hercynian, and fromed valid reservoir space.The Akekule uplift formed unhomogeneous fractures and pore-holes according to multiple tectonic events and Karstifications. The fractures and pore-holes are the main reservoir of Ordovicjan reservoir rock. There are widespread weathering Karstifications. It is mesogenetic-late Caledonian, early Hercynian, late Hercynian and Indo-Sinian-YanShanian The erarly-Hercynian and late Hercynian is the main stage of Karstification. The karstification is the main control function during the period of Ordovician Carbonate reservoir rock is farmed and distributed. The reservoir is limited by the effected deep of Karstification.The paper generalevaluate reservoir, and forecast favorable upgrowth strap of fractures and pore-oles in the carbonate rock of lower Ordovician. Point out the favorable area where the large cavern and fracture-hole reservoir could be growth in Akekule uplift.The traps in Akekule uplift are partition into three big type, five base sub-type, and made research in main growth area all kinds of traps and?characteristic of traps.