致密砂岩储层录井综合解释评价方法研究--以苏里格气田苏20区块为例  

Research on mud logging comprehensive interpretation and evaluation for tight sandstone reservoir:A case study of Block Su 20 in Sulige Gas Field

作　　者：赵天东 张学忠 王刚[1] 张杰[3] 赵慧霞 王立永 ZHAO Tiandong;ZHANG Xuezhong;WANG Gang;ZHANG Jie;ZHAO Huixia;WANG Liyong(No.1 Mud Logging Company,BHDC,CNPC,Tianjin 300280,China;South Sulige Operating Plant of PetroChina Changqing Oilfield Company,Inner Mongolia 016200,China;Oil&Gas Cooperation and Development Company,BHDC,CNPC,Tianjin 300457,China)

机构地区：[1]中国石油渤海钻探第一录井公司,天津市300280 [2]中国石油天然气股份有限公司长庆油田公司苏里格南作业分公司 [3]中国石油渤海钻探油气合作开发公司

出　　处：《录井工程》2022年第2期58-67,共10页Mud Logging Engineering

摘　　要：苏20区块是苏里格气田长期稳产的重要后备储量区,储层具有低孔、低渗、非均质性强的特点。以往区块的勘探开发主要集中在气藏富集区,随着勘探开发的不断深入,井位部署逐渐由富集区向周边外围扩展,与此相应优质气层变得更加隐蔽,储层含水情况也更加复杂,开发难度增大。为实现苏20区块隐蔽性优质气层的精准解释评价及储层含水情况的准确识别,充分发挥录井技术优势,采用常规气测录井、轻烃分析技术,以及离子色谱分析技术组合方式,在对区域整体气藏特点总结及地层水地球化学特征认识的基础上,通过特色分析技术研究和相关新参数的定义,总结出一套解释评价和识别储层气水新方法,有效提高了录井解释评价符合率,为区块进一步高效开发奠定了良好的基础。Block Su 20 is the important backup gas reserve zone with long-term stable yield,and the reservoir is characterized by low porosity,low permeability and strong heterogeneity.In the past,the block exploration of was mainly concentrated in the areas rich in gas reservoir.However,with the deepening of exploration,the well location has gradually expanded to peripheral areas where the high-quality gas reservoirs have become more hidden and the situation of water-bearing reservoir has become more complex,which make exploration work more difficult.In order to realize the fine interpretation and evaluation of hidden high-quality gas layers,accurately identify the water-bearing situation,and give full play to mud logging technical advantages,gas logging technology,light hydrocarbon analysis technology and ion chromatography technology are combined together on the basis of the summary of gas reservoir characteristics in the whole area and the recognition of geochemical characteristics of formation water.Finally,a new method for reservoir gas-water interpretation,evaluation and identification have been summed up through the research on the characteristic analysis technique and the definition of the new related parameters.As a result,the coincident rate of mud logging interpretation and evaluation is improved effectively and a good foundation is lade for developing this block more efficiently.

关 键 词：苏里格气田 苏20区块 致密砂岩 技术组合 隐蔽气层 气水识别 

分 类 号：TE132.1[石油与天然气工程—油气勘探]