辽河滩海海南-月东缓坡带地层岩性圈闭研究与预测

辽河滩海海南-月东构造带以往发现的油气均分布在构造的主体部位,主要为构造油气藏,其东侧的缓坡带为大型斜坡背景,具有地层岩性油气藏发育的有利条件,但勘探程度很低。针对缓坡带探井稀少的现状,充分利用构造主体的钻井资料,结合地震反射特征,建立起了缓坡带的层序地层格架。在层序框架下通过沉积相、地震相分析技术,对研究区的构造、沉积演化特征进行了系统研究,结合波阻抗反演和属性分析等手段预测了储层的发育和分布,提出了缓坡带少井区地层岩性油气藏识别和评价方法,并预测了有利发育层位和地区。

Stratigraphic-lithologic traps study and prediction of Hainan-Yuedong gentle slope belt in beach area of Liaohe oilfield

It has been studied that the hydrocarbon once found in Hainan-Yuedong structural belt in beach area of Liaohe oilfield all distributes in the main body part, mainly of which are structural reservoirs. The gentle slope belt in the east is of favorable conditions for stratigraphic-lithologic reservoir development but the exploration degree is very low. Aiming at the present situation of few exploratory wells, fully making use of drilling wells data, in combination of seismic reflection characteristics, the sequence stratigraphic framework of the gentle slope zone has been established. Based on the sequence framework, through the sedimentary facies, seismic facies analysis technique, the study on area structure, sedimentary evolution characteristics has been carried out. Combined with wave impedance inversion and attribute analysis, and other means, the reservoir development and distribution have been predicted, the stratigraphic-lithologic reservoir identification and evaluation methods have been put forward, and the favorable development horizon and regions have been predicted.