摘要
研究南泥湾油田长6油藏砂体结构特征,确定有利含油砂体结构类型,有效帮助勘探与开发。从长6段沉积类型入手,依据测井曲线形态、砂体形成机理,对南泥湾油田北部长6段砂体平面展布特征进行刻画;研究发现该区长6砂体存在3种单砂体类型、3种复合砂体类型(连续叠置型、间隔叠置型、互层型)、3种横向叠置类型(相切式、分离式、对接式)。较好的油藏分布在单砂体较厚(钟型、漏斗型)的结构中,连续叠置型和侧向相切式砂体中易形成小规模油藏。
To study the sand bodies structure characteristics of Chang 6 reservoir in Nanniwan oilfield, determine the favorable type of oil-bearing sand body structure, and effectively help exploration and development. Starting from the sedimentary types of Chang 6 member,the plane distribution characteristics of Chang 6 member in northern Nanniwan oilfield are described according to the shape of logging curves and the formation mechanism of sand bodies.It is found that there are three types of single sand bodies, three types of composite sand bodies(continuous overlapping, interval overlapping, interbedding) and three types of transverse overlapping(tangential, separation and docking)in Chang 6 member in this area.Better reservoirs are distributed in the structure with thicker single sand body(bell-shaped,funnel-shaped), and small-scale reservoirs are easy to form in continuous superimposed and laterally tangent sand bodies.
作者
刘秀婵
LIU Xiuchan(College of Petroleum and Environmental Engineering, Yan'an University, Yan 'an Shaanxi 716000, China)
出处
《石油化工应用》
CAS
2019年第8期86-89,共4页
Petrochemical Industry Application
基金
延安大学2018年度校级青年项目，项目编号：YDK2018-27
关键词
砂体结构
南泥湾地区
长6
含油性
sand body structure
Nanniwan area
Chang 6
oiliness
