Development Of Fault And Its Controlling Role To Oil-Gas Reservoir Forming In Nanbeier Depression

Nanberier depression are the wood was a major case basin faulted, the research on thebasis of previous studies, to fracture system as the main body, the comprehensive analysis ofthe formation of the fault evolutionary history, according to lithologic reservoir explorationideas-structure and the establishment of a fracture control on the basis of the Tibetan,come tothe conclusion that the hydrocarbo accumulation, distribution and control and transportationof fracture types, thusfurther study of the system of fracture.In the system analysis the hailaer basin south bell depression rupture system and itsevolution, and on the basis of the research of hydrocarbon migration and accumulation offracture evolution together the control function of conditions. The study area at present havefound more relevant and fault reservoir, mainly for the three types of reservoir fault blockreservoirs, fault-lithologic reservoir and lithologic reservoir. The formation of the fault trapsevolution control the time of formation of the type of development, and the exhibition clothposition. The fracture is long-term activities in the south of the main oil source bell fault type,bell south central depression rich oil faulted the main development with the four types offracture, early fracture, medium and stretch of fracture, early stretch of middle and long-termactive faults and stretch early middle and late reversal of long-term active faults through thefour types fracture distribution and the study of the relationship between oil and gasdistribution get, early fracture and long-term development stretch fracture in oil gasaccumulation and distribution plays an important role. And the formation of the fault of a rolekeep out of oil and gas, main show is early stretch for a fracture south oil together. Theformation of the fault may be divided into3sets of fracture system: early fracture system, astretch the middle and late twist fault system reverse fault system. Early stretch fault activitiesto provide the structure for for gathered background, and near dongying movement is oil andgas accumulation of the main parts, and early fracture and long-term development fracturestretch for oil and gas migration provides good channel, facilitate the formation of oil and gas.