塔中地区良里塔格组礁滩相储层特征研究

The Characteristics of Reef-flat Reservoirs in Lianglitage Formation of Tazhong Area

塔里木塔中地区良里塔格组的礁滩储集体主要发育在陆棚边缘的棚缘滩、棚缘丘礁,棚内的棚内滩、棚内丘礁。通过在地震剖面分析,礁滩体的波反射有着比较鲜明的特征。地震反射表现为丘形杂乱、乱岗状,振幅弱、连续性弱,顶面凹凸不平,两翼见反射终止或上超,内部杂乱或者空白。测井记录上表现为自然伽马、声波时差为低值,深电阻率曲线呈箱型高值。通过对不同沉积相岩石的孔隙度和渗透率比较,礁滩相储集体为最有利的储层。总结各种礁滩相储层特征,为其他地区礁滩储层的发现和勘探提供参考。

The reef-flat reservoirs in Lianglitage Formation of Tazhong Area were mainly developed on the margin continental shelf,its domal reef and its inside beach and reef.Study of seismic section analysis Indicated that wave reflection of the reef flat had obvious characteristics.The seismic reflection of was disorder like hillock,the swing and the continuity were feebleness.The cover of peak was uneven and the reflection on both of the limbs were terminated.Data of natural gamma logging and time difference of sound wave were low in logging record.Comparing with the rock porosity and permeability in different sedimentary facies,the reef-flat reservoirs are the best ones.It provides a basis for discovering the reefs in other regions.