应用层序地层学的原理和方法,综合运用地震、测井与钻井资料,对陆家堡凹陷西部地区九佛堂组层序和体系域边界进行了研究,并探讨了层序发育与沉积序列关系及其分布特征。结果表明,研究区九佛堂组可划分为1个三级层序和3个体系域。低位体系域由3个准层序组构成,自下而上沉积水体加深;湖侵体系域可细分为4个准层序组,总体表现为退积式和加积式叠置样式;高位体系域可划分为4个向上砂地比增大的进积准层序组。研究区在3个体系域沉积时期的地层厚度变化不同,在低位体系域沉积时期主要沉积中心位于包日温都断裂带北部,之后向西南迁移至包日温都断裂带中段与五十家子庙洼陷南部交界处。 Applying the principles and methods of sequence stratigraphy, the sequence and system boundary of the Jiufotang Formation in the western part of Lujiabao Sag have been comprehensively studied by using the data of earthquakes, logging and drilling. The sequence of sequence development and sedimentary sequence Relationship and its distribution characteristics. The results show that the Jiufotang Formation in the study area can be divided into one third-order sequence and three systematic sequences. The lower system tract consists of three quasi-sequence groups, and the water body is deepened from bottom to top. The lacustrine system tract can be subdivided into four quasi-sequence sets, which are characterized by an integrated regression and accretion pattern. The phylogenetic domain can be divided into four quasi-graded sequence groups with an upward sand-to-sand ratio increase. The stratigraphic thickness varies during the sedimentary period in the three system fields. During the sedimentary period of the Lower Systemic System, the major sedimentary centers are located in the northern part of the Banyu-Wendu fault zone, and then migrate to the southwest to the middle part of the Banyu-Wendu fault zone. Temple sag at the southern junction.