Fuyu Oil Field In The Area Of Non-urban Block Reservoir Description

Construction on the Fuyu oil field in southern Songliao basin is located in the central depression help uplift Buyeo new structure on the 3rd, is a very complex fracture, cutting the high-point barrier and white dome anticline. Field geological features are: multi-fault (2004 to explain more than 700), and complex fault system, fault to NS and NE-WS to go mainly to local development have EW fault; reservoir buried depth (usually 250 ~ 500m, an average of 430m), the distribution of oil more than a high point in the structure, than Fuyu reservoir development, local development Yangdachengzi reservoir, reservoir-based control is fully constructed in the hole, in the layered high-permeability sandstone reservoirs.Multi-layers and thin (Stephen 4 sandstone four sub-groups, 13 layer, the average effective thickness of about 10.3 meters), large differences in physical properties, with an average 24.1% porosity and permeability 180×10-3um2. Lithological reservoir in order to fine-grained sandstone and siltstone mainly on the lateral lithologic changes, and more positive rhythm formation, oil layers, the layer of the heterogeneity of serious effects of poor water flooding. Mainly affected by reservoir sedimentation - structural control, although the oil-bearing area, geological reserves, but due to complicated geological conditions of oil fields, oil-water distribution regularity of difference, and in the process of developing the reservoir by the cracks and the effects of low permeability, to bring about the development of very difficult.In this study, full use of the existing field data to sedimentary petrology, reservoir geology and petroleum geology, such as the theory as a guide, to serve the oil field exploration and development for the purpose of fine to fine stratigraphic division and correlation-based, closely surrounding the depositional system reservoir distribution and the main line and so on, through the micro-structures, sedimentary microfacies and depositional systems, reservoir heterogeneity, reservoir modeling studies, a clear control of remaining oil distribution factors, adjusted to provide the next step to optimize the development of the target area. Potential for the oil field study area and the formulation of the next adjustment programs to provide more reliable data on the geological support.