稠油加密井水洗油层资源再利用潜力分析——以河南油田为例  

Analysis of potential reuse of heavy oil infill well water washing reservoir resources—by taking Henan Oilfield as an example

作　　者：姚国平[1] YAO Guoping(Exploration&Development Research Institute of Henan Oilfield Company,SINOPEC,Nanyang 473132,Henan,China)

机构地区：[1]中国石化河南油田分公司勘探开发研究院,河南南阳473132

出　　处：《石油地质与工程》2023年第4期56-60,共5页Petroleum Geology and Engineering

摘　　要：河南油田稠油油藏经过三十多年蒸汽吞吐已进入高轮次采油末期,现井网条件下继续蒸汽吞吐会在经济上存在风险,2021年开始在井楼南区开展“水平井井网加密分段吞吐”先导试验,并初见成效。通过对加密井岩心化验结果分析,并结合油层蒸汽波及后声波时差、深浅侧向电阻率等电性变化特点,建立了薄互层稠油油层蒸汽吞吐水洗程度的识别图版,应用数值模拟技术明确了弱水洗、中水洗、强水洗油层再次吞吐的补孔条件与时机,为加密水平井投产井段优化设计及水洗层挖潜利用提供可靠依据,能够充分发挥加密水平井的开发潜力。Henan heavy oil reservoir has entered the end of high-round oil recovery after more than 30 years of steam huff and puff.Continuous steam huff and puff under the existing well pattern will have economic risks.In 2021,the pilot test of"horizontal well pattern infilling and staged huff and puff"was carried out in the south area of Jinglou,and initial results were achieved.Based on the analysis of the core test results of infill wells,combined with the characteristics of electrical changes such as acoustic time difference after steam sweep,deep and shallow lateral resistivity,the identification chart of steam soaking and water washing degree of thin interbed heavy oil reservoirs is established.With the numerical simulation technology,the conditions and timing about the weak,medium and strong washing oil throughput reperforating have been made clear.It provides a reliable basis for the optimization design of the production interval of the infill horizontal wells and the potential exploitation of the washed layer,which can give full play to the development potential of the infill horizontal wells.

关 键 词：稠油 加密吞吐 水洗油层 潜力分析 

分 类 号：TE345[石油与天然气工程—油气田开发工程]