Detailed Evaluation And Process Optimization Of Transformation In West41Well Chang8Reservoir

West41well chang8reservoir locate in the northern middle of the slope, in a southeast-northwest dumping nose structural belt, reservoir properties are poor, is a typical low porosity and low permeability reservoir. The main issues which were exposed in the process of exploration and development of block were affecting the pathway system of oil migration, aggregation and accumulation, predominant pathway and oil-water distribution relationship’s vague understanding, causing well deployment difficult and effect of test oil instability; at the same time, in the process of water development, injection pressure of well is high, producing energy can not obtain timely supply, causing low well productivity, affecting block’s efficient development.Based on this, the subject takes west41well chang8reservoir as research goal, through chang8reservoir stratigraphic division and correlation, deposition (micro) phase and reservoir characteristics’s research, mainly have solved the target area capacity distribution, oil-water relationship, through reservoir detailed study, deepened chang8reservoir’s understanding, pointed out block’s favorable oil zone, Provided basis for late exploration and development; influenced by the reservoir geological, west41well testing data showed that the wells productivity were low, to achieve these reservoir’s efficient development, in addition to find out reservoir geology, implementation effective reservoir reconstruction measures are another important means of building capacity.Therefore, based on the results of geological research, chang8reservoir transformation process technology is carried out, reservoir transformation respectively for oil-water wells:with the digital-analog means to optimize oil overall fracturing program, design single well hydraulic fracturing parameters, by fracturing fluid performance evaluation and efficiency technology research, to establish efficiency technical systems for hydraulic fracturing, this is expected to improve the effect of fracturing test oil; multi-stage blasting wells fracturing induced by acidification of blood pressure injection technology research was carried out for wells, according to the reservoir characteristics of west41wells, multi-stage blasting parameters are designed, wells deep penetrating acidification acid system which is suit for the well area is optimized, this can effectively reduce the injection pressure, added the formation energy. The research has a certain significance for addressing the constraints on the efficient development of the west block41major technical bottleneck, and achieving high and stable production of Building blocks.