| Central Depression of Songliao Basin depression district Qijia- Gulong field research in central Putaohua microfacies Gulong has become to understand the evolution of sedimentary and it is an important part of Songliao Basin.the main purpose of developing is Putaohua oil layer. By studying Putaohua oil layer find good reservoir properties, oil-bearing area contiguous distribution of test oil production is relatively high, is one of the important areas for replacement reserves and production growth, but also for the exploration and development of oil and gas reservoirs in the Songliao Basin and Research lay the foundation to further tap the potential of oil and gas in the Songliao Basin, provide geological basis for the development of oil production.Data analysis in the study area, combined with the district Putaohua oil layer seismic attributes, physical characteristics, such as for a conventional well logs were 103 single well to identify a single well sedimentary microfacies establish depositional model, sedimentary microfacies study area fluvial deltaic deposition, development of underwater distributary channel, split between underwater, underwater natural levee, mouth bar, sheet sand, underwater crevasse splay, distal bar seven major micro-phase deposition and net wells phase micro fine anatomy. Comprehensive analysis of reservoir types and water distribution water distribution relationships, better determine the physical properties of underwater distributary channel sand body for oil, sand sheet is generally dry layer or water layer; and because the water distribution structure also subject to control, construct more gentle place, will develop a pure oil development, oil and gas accumulation main factors affecting reservoir properties and faults in the area, the main reservoir types of structural- lithologic reservoir prediction sand body is preferred, preferably the the 83 block of favorable sandstone blocks, well developed network deployment. |
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