定边油田油房庄区延9_(3)地质特征研究及有利区预测

Study on geological characteristics of Yan9_(3) and prediction of favorable areas in Youfangzhuang Oilfield

定边油田油房庄区主要含油层位延9_(3)、长4+5_(2),该区北部延9_(3)油藏早在上世纪90年代就投入开发,南部则在2010年以后开始开发,但由于种种原因,只是零星动用,并未规模开发。目前,该区面积大,井数少,地质认识不清,且存在生产井产能低、注采井网不完善、水驱控制程度和油藏动用程度较低等开发难题,油藏特征及富集规律认识有待进一步深化。因此,在油田开发方案制定前,需开展该区延9_(3)油层组地质特征研究,为开发方案的制定提供技术支撑。

The main oil-bearing strata in Youfangzhuang area of Dingbian Oilfield are Yan9_(3) and Chang 4+52.Yan9_(3) reservoir in the north of the area was put into development as early as the 1990s,and the south began to develop after 2010.However,due to various reasons,it was only used scattered and not developed on a large scale.At present,the area is large,the number of Wells is small,the geological understanding is unclear,and there are some development problems such as low production capacity of production Wells,imperfect injection-production well pattern,low water drive control degree and low reservoir utilization degree,and the understanding of reservoir characteristics and enrichment law needs to be further deepened.Therefore,before the formulation of oilfield development plan,it is necessary to carry out geological characteristics research of Yan9_(3) reservoir group in this area,so as to provide technical support for the formulation of development plan.