The Reservoir Study On Xingma Buried Hill In Western Sag Of Liaohe Depression

The Xingma buried hill was discovered in 1970s. There was no further study because of the technology limitation and the lackness of geology knowledge at that time. The metamorphic reservoir exploration was accelerated by development of 3D seismic technology and the shortage of petroleum in 1980s. The Xingma buried hill is a porous fractured reservoir, consists two types of reservoir space--- pore type space and fracture type space. The main reservoir space types are tectonic fracture, fragmented intergranular space, corrosion formed hole and fracture, crystallizaion formed pore. The metamorphic reservoir is very special, and the reservoir study is the base of exploration and exploitation.Starting with research of petrophysical research based on well logging data, coring data, and wireline well logging data. The essay studies on lithology type, reserve space type, lithology identification, and reservoir identification of metamorphic by logging, reservoir parameters interpreting, etc. While in the reservoir rock the corresponding relationship of logging information and reservoir characteristics can be established on the base of testing and producing test. by selecting acoustic time that is sensitive to the matrix pore or sensitive to ramifying fissures, and by selecting the electric resistivity curve of the deep investigation lateral log that is responded to the reservoir characteristic obviously as major reservoir classification parameters. Then by drawing Rlld—Δt crossplot, the reservoir classification criterion can be confirmed quantitatively.The Xingma Archaean buried hill reservoir parameter and reservoir distribution are ensured by reservoir research, and provide important evidence to reserves report and reservoir development.