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“十一五”期间,济阳坳陷已整体进入隐蔽油气藏勘探阶段。在勘探目标更为复杂、隐蔽和勘探难度加大的条件下,济阳坳陷保持了良好的勘探态势,为胜利油区的发展夯实了资源基础。总结“十一五”期间济阳坳陷的勘探特点和经验,对于胜利油区下步勘探具有重要的借鉴意义。为此,从井别、钻探目的层系、完钻深度、储层类型和圈闭类型等方面对济阳坳陷“十一五”期间完钻的探井进行钻探效果及对策分析,结果表明,预探与风险勘探的突破是勘探可持续发展的重要引领;沙四段上亚段及其以上层系仍为主要勘探目的层系,孔店组—沙四段下亚段等深层逐渐成为增储重点;陡坡带砂砾岩体、洼陷带浊积砂体、缓坡带滩坝砂体及新近系河道砂体等岩性油气藏成为主要勘探目标,深层及潜山等勘探目标所占比例呈明显增加趋势;精细勘探是高勘探程度老区取得进展和低勘探程度新区获得突破的关键;储层不发育和输导条件差是目前及今后济阳坳陷勘探面临的主要风险。
During the Eleventh Five-year period, the Jiyang Depression has entered the exploration stage of subtle reservoirs as a whole. Under the condition of more complicated exploration targets, more concealment and more difficult exploration, the Jiyang Depression maintained a good prospecting situation and laid a solid foundation for the development of Shengli Oil Region. Summarizing the exploration features and experiences of the Jiyang depression during the 11th Five-Year Plan, it is of great reference significance for the next exploration in Shengli Oilfield. Therefore, the drilling results and countermeasure analysis of exploration wells drilled during the “Eleventh Five-year” period in Jiyang Depression from the wellbores, the drilling target strata, the drilling depth, the types of reservoirs and the trap types were analyzed. Results It is indicated that the breakthrough of pre-exploration and risk exploration is an important lead in exploration of sustainable development. The Upper Member of Shahejie Formation and its upper strata are still the major exploration target strata, while the deep sub-section of Kongdian Formation-Shasi Section gradually deepens Which will be the focus of increasing reserves; lithologic reservoirs such as steep slope gneiss body, subsided belt turbidite sand body, gentle slope bank sand bar body and neo-system channel sand body become the major exploration targets, and deep and buried hill exploration targets The ratio of sedimentation rate is obviously increasing. Fine prospecting is the key to make progress in the old exploration area with high exploration degree and the new exploration area with low exploration extent. The poor reservoir development and poor transport conditions are the main risks in the exploration of Jiyang depression at present and in the future.