摘要
基浪堆积物作为火山碎屑沉积的一种方式得到了众多学者的认可,但一直没有在该类储层中发现油藏的先例。在对黄骅坳陷X1地区沙三段储层进行研究时发现,火山口附近储层发育厚度大,向周围迅速变薄尖灭,储层物性好、单井产能高。总结了该区基浪堆积物的沉积模式,并通过测井和地震进行识别,刻画基浪堆积体分布特征。基浪堆积物储层以含火山物质的砂砾岩和泥岩互层为主,储集空间以孔隙为主,孔渗性较高。分析认为岩浆遇水的爆炸作用及后期储层中火山物质的溶解是储层改善的主要原因。通过综合研究,制订了该区的布井方案,取得较好效果,为该类油藏的研究提供了宝贵的经验。
As one type of volcanic clastic deposits,base wave deposit has been accepted by many scholars,but no oil reservoir has been found in such reservoir. The study on Sha3 member reservoir in X1 area in Huanghua Depression indicates that reservoirs near crater are thicker,and quickly become thinner and piching out to vicinity,with good reservoir physical properties and high single well productivity. In this paper,deposit mode of base wave deposit in this study area is investigated,and the distribution features of base wave deposit are described by identification of well logging and seismic data. The major lithology of base wave deposit reservoir is interbedded glutinite and mudstone with volcanic. Its major accumulation space is pore,with higher porosity and permeability.This analysis indicates that explosion of magma when meeting water and dissolution of volcanic in late reservoir are the major reasons for improving reservoir. By comprehensive study,well deployment scheme in this study area is formulated,with better effect,providing valuable experience for studying such oil reservoirs.
出处
《特种油气藏》
CAS
CSCD
北大核心
2014年第5期16-19,151,共4页
Special Oil & Gas Reservoirs
基金
中国石油天然气集团公司大港油田分公司重大科技专项"孔南地区长期稳产配套技术研究"(20140001)
关键词
火山事件沉积
基浪堆积物
滚动增储
黄骅坳陷X1地区
volcanic deposit
base wave deposit
rolling reserves increase
X1 area in Huanghua Depression
