The Research On The Measure Adjustments Of Waterflooding Development On The Chang-2Oil Reservoir, Si-wan Zone, Zichang Oilfield

Zichang Oilfield began to inject in2002, along with the extension of the time ofWaterflooding development, in the Waterflooding zone, there were water-absorptionexceptions in a few waterflood-wells, as well as waterline propulsion uneven, and watersaturation was rising in a small amount of oil-wells.Therefore, it is imperative to take asystematic understanding&evaluation to the effect of waterflooding in recent years.Based on the extensive review and information collection for the study area’s geologicaldata, logging data, oil wells completion data, dynamic monitoring data, productionperformance data, reservoir analysis reports and other information in the Chang-2oil reservoir,Ci-wan Zone, Zichang Oilfield, I take systematic study for the geological features, includingstructural features, stratigraphy, sedimentary characteristics and reservoir characteristics of theChang-2oil reservoir, Ci-wan Zone, Zichang Oilfield, and take a comprehensive analysis ofthe dynamic situation of the waterflooding development in the Chang-2oil reservoir, to take ain-depth understanding to the real situation and the existing problems of it. Regarding to theexisting problems, leveraging the dynamic analysis on production data, I studied the dynamicchanges and Principles of water&oil in the researched block, to understand how toreasonably maintain reservoir pressure, improve well-grid, stratified water, reduce ineffectivecirculation, increase the spread of injected water volume, and how to make a reasonable policylimits for waterflooding development technology, to achieve the goals of slowing down the oilproduction deportation, enhancement of oil recovery rate, and increase recoverable reserves, toimprove the field development results, and finally to provide theoretical guidance andtechnical means for the efficient development of the Chang-2oil reservoir, Zichang Oilfield.