XX气田太2段沉积特征研究  

Study on sedimentary characteristics of tai2 member in XX Gasfield

作　　者：肖琳 Xiao Lin(Exploration and Development Research Institute of Huabei Branch,SINOPEC,Zhengzhou 450006)

机构地区：[1]中国石油化工股份有限公司华北油气分公司勘探开发研究院,河南郑州450006

出　　处：《石化技术》2020年第8期87-89,46,共4页Petrochemical Industry Technology

基　　金：石化科研项目“鄂北高含水气藏有效开发技术研究”;效益建产工程“柳杨堡含水气田效益开发配套技术研究”。

摘　　要：XX气田太2段气藏为开发评价的主要目的层位,具有较大的潜力。本文通过野外露头岩心观察、测井、录井、化验分析等资料,开展太2段沉积特征研究,识别出太2段发育3种沉积微相类型,刻画其展布特征。研究表明:太2期主要发育潮坪亚相的障壁海岸沉积体系,可识别出障壁砂坝、潮汐水道、泥灰坪三个主要沉积微相,纵向上多期砂体相互叠置,其中障壁沙坝为主要有利沉积微相,研究区西侧的障壁砂坝发育规模较大,为主要开发评价目标,沙坝西侧为海侵方向,砂岩厚度及岩性优于东侧的背水面。该项研究成果为指导后续天然气开发提供技术支持。Tai2 gas reservoir of XX gasfield is the main target horizon of development evaluation,which has great potential.Based on the data of outcrop core observation,well logging,logging and laboratory analysis,this paper studies the sedimentary characteristics of Tai2 gas reservoir,identifies three types of sedimentary microfacies developed in tai2 member,and depicts their distribution characteristics.The results show that the barrier coastal depositional system of tidal flat subfacies is mainly developed in tai2 stage,and three main depositional microfacies of barrier sand bar,tidal channel and marl flat can be identified.In the longitudinal direction,the sand bodies of multiple stages are overlapped,among which the barrier sand bar is the main favorable sedimentary microfacies.The development scale of the barrier sand bar on the west side of the study area is large,which is the main development and evaluation target,and the transgression direction is on the west side of the sand bar.The thickness and lithology of sandstone are better than the back water surface on the east side.The research results provide technical support for guiding the follow-up natural gas development.

关 键 词：XX气田 太2段 沉积特征 障壁海岸沉积 

分 类 号：P618.13[天文地球—矿床学]