Conduit Framework Petroleum Study For West Beach Area Of Liaohe Depression

According to the study on petroleum geologic condition, conduit media which include sandbody, fault and unconformity, and migration of beach area in Liaohe Depression, conduit framework and characteristics of petroleum migration of western depression is studied, and applicable conduit framework and petroleum migration model are established.Combination of seismic data analysis, synthesis sandbody,fault and unconformity,. established the suitable conduit framework for the region. Petroleum conduit framework of Es3 is sandbody, fault and the unconformity surface between Es3 and basement. Sandbody plays an important role. Unconformity surface is the main conduit framework of the buried hill petroleum reservoir in western beach area. The dominant petroleum conduit framework of the first member of Shahejie Formation (Es1) and Es2 is sandbody and fault, the conduit action of fault plays an important role. Ed is away from the source rock layers, the petroleum conduit framework is mainly the faults connecting the source rock. By the way, the unconformity surface of the bottom of Ed plays an important role.Not only from the space to discuss the transporting combination of conduit framework, but also from an analysis of time transporting the effectiveness framework. Sand bodies and unconformity is a product of the same deposition, formed early, with good conducting properties, while the activities of rupture time and has good petroleum migration time of the match. The study area has three main fault, such as diversity and long-term characteristics, and through the homogenization temperature of inclusions in the study area of study with 3 accumulation, in which period the most important reservoir temperature of 90～140℃, corresponding to the time for the 34-29Ma, with the main fault of the match time.West beach area in accordance with the structure of the western form of depression, the study area is divided into gentle slope, sag and the steep slope with the three tectonic units, and the gentle slope and steep slope with a model analysis of translocation. In the gentle slope, transporting sand-based model, low Shasan unconformity as a supplement, the effectiveness of the lowest conducting fracture in the form on to the ladder-type and T-transporting mainly transporting; in the steep slope, translocation-based model to fracture, sandbody supplement, not the effectiveness of integration of transporting a minimum, in the form to the S-type oriented translocation.Combination of formation water and crude oil properties data, key oil region have been conducting pattern analysis. Central low-convex to the long-term activity of the Hainan fracture as the main oil and gas migration pathway; Bijialing region Bijialing sandbody and fracture as the main channel of the petroleum migration; oil sources away from the western slopes away to the sand connectivity as the main body of the oil and gas migration pathway.