The Reservoir Evaluation Comprehensive Research Of Wu 50 Zone Of Baihe Oil Region

Baihe oil region accounts for about 25 km2.From the structure, the main oil reservoirs of Yanchang are chang 4+5 reservoir and chang 8 reservoir with the small scale, the hidden, the difficult exploration, the reduction of current formation pressure and productivity, the high of moisture content. In order to further expand the production scale field, we must have a more comprehensive understanding and study of the reservoir, including the sedimentary microfacies and sand body distribution studies, reservoir characteristics and microscopic heterogeneity study, which based on geological research conduct reservoir development program design, including determining design principle, the development, the development of strata, well spacing, single well Nissan, note the ability to maintain a reasonable level of pressure, solution deployment and index forecast. On the basis of data collection, digestion and regional sedimentary evolution background analysis, we study small layer comparison and classification in the formation of study area by contrasting multi-well and flag layer of region; determine the rock phase by outcrop and core observation and determine the depositional systems and sedimentary facies, and sedimentary microfacies of the study area by combining logging data and logging establishment phase. We make Rock characteristics of reservoir sand bodies, diagenesis, pore types and pore structure by studying the Rock characteristics of reservoir sand bodies, diagenesis, pore types and pore structure, and analyzing physical properties of the small layer. Based on the above comprehensive analysis, through current situation analysis and reservoir oil field development, gas and water distribution study, analysis of the study area high moisture factor, we carry out well system research network (including the well spacing density and row spacing wells optimization) pressure system injection timing and injection-production research; thus put forward reasonable proposals for the study area development program.