塔北隆起西部卡普沙良群滩坝沉积特征  

Beach-Bar Sedimentation Characterization of the Kapushaliang Group in the Western North-Tarim Uplift

作　　者：夏辉 林畅松[1] 刘永福[2] 赵海涛[2] 孙琦[2] Xia Hui;Lin Changsong;Liu Yongfu;Zhao Haitao;Sun Qi(China University of Geosciences (Beijing),Beijing100083,China;PetroChina Tarim Oilfield Company,Korla ,Xinjiang841000,China)

机构地区：[1]中国地质大学(北京),北京100083 [2]中国石油塔里木油田分公司,新疆库尔勒841000 [3]西安石油大学

出　　处：《特种油气藏》2018年第6期1-5,共5页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金“塔里木盆地古生代关键变革期的古构造、古地理演变及油气聚集效应”(41130422).

摘　　要：塔北隆起西部早期勘探的重点为深层碳酸盐岩,为了推动碎屑岩油气勘探,须对该区卡普沙良群发育的滩坝砂体进行重点研究。依据岩心、测井、录井及地震等资料,分析了研究区卡普沙良群滩坝的沉积特征及影响因素,并建立了其沉积模式。研究结果表明:塔北隆起西部英买力地区卡普沙良群发育滩坝沉积,可以进一步划分为砂坝和砂滩亚相;砂质滩坝的发育主要受古地貌、物源和水动力条件等因素的影响,其沉积模式可分为三角洲改造型和水下低隆起型;滩坝砂体是有利的储集体,为后续勘探的重点目标。该研究明确了研究区滩坝的沉积特征及分布规律,建立了2种相应的沉积模式,可为后续碎屑岩勘探提供理论借鉴。The early exploration in the western North-Tarim Uplift mainly focuses on the deep carbonate reservoir. In order to promote the clastic reservoir exploration,it is of great necessity to study beach-bar sandbodies of the Kapushaliang Group in this area.The sedimentary characteristics and influencing factors of the Kapushaliang Group beach-bar were analyzed to establish the corresponding sedimentary patterns based on the core,logging and seismic data.Research indicates that the Kapushaliang Group beach-bar sedimentation in the Yingmaili of the western North-Tarim Uplift can be further divided into sand-bar and sand-beach subfacies.Sandy beach-bar development is mainly affected by the factors such as paleogeomorphology,provenance and hydrodynamic conditions,which can be classified into delta transformation and underwater low uplift.Beach-bar sandbody is considered as the favorable reservoir for subsequent exploration.This research clarifies the beach-bar sedimentation and distribution and establishes two corresponding sedimentation patterns,which could provide certain theoretical references for the further exploration of clastic reservoir.

关 键 词：沉积模式 滩坝 卡普沙良群 塔北隆起西部 

分 类 号：TE122.2[石油与天然气工程—油气勘探]