Fine Description Of Oil Reservoir Of Chang 2 In Guantun Block Of Panlong Oilfield

Panlong oilfield Guantun block in Ordos Basin production position Yanchang Formation Chang 2 reservoir belongs to low porosity low permeability sandstone reservoir. For the reservoir geological characteristics, the paper make geological description of the Guantun Chang 2 oil pool.In order to more objectively understanding reservoir geological characteristics, the paper focus on the research on the reservoir characteristics in the studied area and 3D geological modeling research.The paper put the production horizon Chang 2 reservoir in Guantun block of Panlong oilfield as the research object, on the basis of core, logging data, the comprehensive application of petroleum geology, structural geology, sedimentology, sequence stratigraphy, reservoir geology, reservoir engineering methods and techniques, such as the study area Chang 2 reservoir fine description, long mainly carried out the following work. On the detailed comparison of reservoir sedimentary strata division, established the isochronous stratigraphic framework and the real reservoir space lattice; Combining with the depositional background, combined with the analysis of the research of core and logging facies, subdivision heart beach, river water filling, riverbed detainment, natural levee, crevasse splay, flood plain and so on 6 kinds of microfacies types, on the longitudinal peace of small layer on the surface of the sedimentary microfacies distribution were determined, Chang 22 continuous sand body distribution, long river facies basic covering the entire area, vertical superimposed accretion, sedimentary thickness of sand body; On the basis of reservoir characteristics and the detailed study of flow unit. The combined logging second interpretation, four sex double calculation of reserves; Follow the steps from point to surface to the body using RMS software established the main reservoir in the study area Chang 22 Wells model, layer model, the sedimentary microfacies in the 3D model, and under the control of sedimentary microfacies in 3D attribute model is established.Through the research on the reservoir fine description for late reasonable development scheme to improve recovery and develop reservoir effectively and reasonably, provides a theoretical basis and technical support.