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对三角洲砂岩的油气勘探,在世界范围都是重要领域。在饶阳凹陷中部,首先认识三角洲砂体是在1981年大王庄留70断块油藏滚动勘探中期,这套油层厚度大、物性好、分布广。钻井剖面上反映为一组含钙粉细砂岩,夹薄层暗色泥岩,反韵律特征清楚。在滚动勘探开发中,逐渐认识到它是一个构造岩性油藏,物源来自西南方向的太行山区,大王庄西部的蠡县斜坡处于广阔的三角洲平原和三角洲前缘,特别是Es1上段底部的三角洲砂体,在地震剖面上前积现象明显,倾入油页岩中,油源充足,储层物性好,利于油气的运移和储集,在上倾封堵有效的情况下,可以富集成藏。
Oil and gas exploration of the delta sandstone is an important area all over the world. In the central part of Raoyang sag, the deltaic sandbody was first recognized as the mid-term exploration of reservoir reservoirs in Dawangzhuang reservior in 1970 with a large thickness and good physical properties and wide distribution. The drilling profile is reflected as a group of fine calcareous sandstone with thin dark mudstone, with clear rhyme characteristics. During rolling exploration and development, it gradually realized that it is a structural lithologic reservoir with origins in the Taihang Mountains in the southwest. The Yixian slope in the west of Dawangzhuang lies in the vast delta plain and delta front, especially at the bottom of Es1 Delta sand bodies have obvious pre-accumulation on the seismic section, pouring into oil shale, sufficient oil source, good reservoir physical properties, which will facilitate the migration and accumulation of oil and gas. In the case of effective plugging and plugging, it can be rich Integrated reservoir.