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在二连盆地洪浩尔舒特凹陷的勘探开发过程中,洪37井获得了重大油气突破,其产油段特殊的沉积现象说明其属于在扇三角洲前缘形成的次生滑塌堆积体(简称次生扇)。运用沉积学的基本原理,对洪37井的岩心进行了细致的描述分析,发现其中存在大量的滑塌变形层理,说明未固结沉积物发生了滑塌并再次沉积,并进一步探讨了次生扇的形成机制。次生扇是一种非常好的储集体,它具有物性较好,封堵条件好,靠近烃源岩等优越条件,在今后二连盆地的勘探中应予以高度的重视。
In the process of exploration and development of the Honghaoershute depression in Erlian Basin, a breakthrough was made in oil and gas breakthrough in Hong 37 well. The special depositional phenomena in the oil-producing section indicate that it belongs to the secondary slump deposit formed in the front of the fan delta Referred to as secondary fan). Using the basic principles of sedimentology, the core of Hong-37 well was described and analyzed in detail. It was found that there were a large number of slip-deformation strata, indicating that unconsolidated sediments collapsed and re-deposited, and further explored the Health fan formation mechanism. Secondary fan is a very good reservoir, it has better physical properties, plugging conditions are good, close to the source rock and other superior conditions, in the future exploration of Erlian Basin should be given high priority.