The Technical Application Of Reservoir Predication For Carbonate Rock Reservoir In The Maigaiti Slope Region

Carbonate rock reservoir covers 57% in discovered petroleum reserves in the world, while covers 33% that of in natural gas; the petroleum-in-place of carbonate rock in Tarim basin is about 15.3 billion tons, gaining a great achievement in middle and north of the Tarim basin. The Hydrocarbon accumulation has also been discovered in carboniferous system of the neopaleozoic and carbonate rock in ordovician system of the lower paleozoic . Moreover, in the Lower-Middle Ordovician lower paleozoic, the upper surface of the limestone and Lunnan are similar to each other in terms of the background of buried hill, growing the three stages karst; From above reasons, a bright exploring future will appear in carbonate rock of the whole Maigaiti slope. However, the degree of exploration in the area of Maigaiti slope, on the whole, is low and the exploration of carbonate rock is nearly in the black. According to the present situation, an important topic before us is how to utilize the source in hand to find out the range of profitability and target, a breakthrough being to make the exploration of carbonate rock taken place of that in Maigaiti slope. Therefore, it is of realistic importance to launch the technique of reservoir predication of carbonate rock and fluid detection,which is a rational compounding application of them.This thesis is on the basis of existing materials, three-dimensional areas, including Maixi, Qungu, and Niaoshan, having been explored by combination of previous and present technique, rational technique, as well as effective association of geologic and geophysical exploration, which has explored a different technical combination sequence suitable for this region, with a good applied effectiveness. In two-dimensional area of Maixi, in view of the shortage of material, the technique of palaeogeomorphic description and seismic face sculpture has been adopted to find the slower-middle slope high energy zone in xiaohaizi limestone,priority being given to Maican1 well as a well location target; in view of a characteristic of high degree exploration in Qungu three-dimensional area,palaeogeomorphic description,fracture predication,hydrocarbon detection, routine attribute extraction and analysis, sculpture of fracture and cave system have been adopted as a result of making definite the controlling factor of forming reservoir,promoting the Qg1 drilling well; in view of new three-dimension in Niaoshan, routine attribute extraction and analysis, seismic face sculpture, impedance inversion, sculpture of fracture and cave system ,AVO analysis and fracture predication have been adopted to find the reef flat inside Penglaiba group and sculpt fracture and cave system,priority being given to Manan1 well location targets...