红浅1井区注蒸汽后火烧油层生产特征分析  

Analysis on the production characteristics for the in-situ combustion reservoir after steam injection in Well Block HQ1

作　　者：木合塔尔[1] 高成国[1] 袁士宝[2] 任宗孝 展宏洋 王若凡 Muhetaer;GAO Chengguo;YUAN Shibao;REN Zongxiao;ZHAN Hongyang;WANG Ruofan(Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company,Karamay 834000, China;College of Petroleum Engineering, Xi’an Shiyou University,Xi’an 710065, China)

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000 [2]西安石油大学石油工程学院,陕西西安710065

出　　处：《大庆石油地质与开发》2021年第4期73-79,共7页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家科技重大专项“稠油火驱提高采收率技术研究与应用”(2016ZX05012-003);国家科技重大专项“浅层稠油火驱工业化有效开发”(2016ZX05055-002-002);中国石油重大科技专项“新疆油田浅层稠油稳产提效技术研究与应用”(2017E-0408)。

摘　　要：新疆红浅1井区先导试验区经过长期注蒸汽开发滞留的地下水体及其对后续火驱开发的适应性、生产特征影响尚不明确。运用统计学方法结合现场生产监测手段,对试验区储层和注蒸汽开发历史进行分析,通过建立火驱效果预测公式评价试验区适应性、分析火驱生产特征。研究认为:空气油比预测公式计算结果与实际情况高度吻合,试验区具备较好的火驱开发基础条件;火驱生产过程中原油改质作用明显,酸值监测结果与燃烧前缘的推进呈现密切关系,产出水的矿化度变化来源于高温下的岩石水热反应,但与燃烧前缘位置关联不大;注蒸汽后火驱生产井初期含水较高,产油高峰后还会出现高含水期,3类典型生产井主要生产特征和开发影响因素不同。研究结果对同类油藏转火驱开发具有重要的指导意义。At preset,it is not clear about the retained underground water-bodies after long-term steam injection development in the pilot test area of Xinjiang Well Block HQ1 and their adaptabilities to the subsequent fire-flooding development and the effects on the production characteristics.By using statistical method combined with the field production monitoring,the pilot-area reservoirs and steam injection development history are analyzed,the adaptability and the production characteristics in the fire-flooding pilot area are evaluated with the help of the established predicting formula for the fire-flooding effects.The researches show that the calculated air-oil ratio is highly consistent with the actual situation and the pilot area has good conditions for the fire-flooding development.During the fire-flooding process,crude oil upgrades significantly;the monitored results of acid value have a close relation with the advance of combustion front;the salinity change of the produced water results from the hydrothermal reaction of rocks at high temperature,but has little relationship with the position of combustion front;much higher water cut appears at the early stage in the fire-flooded producing well after steam injection,and high-watercut period will occur after the peak oil production;the main production characteristics and development influencing factors for the three kinds of typical production wells are quite different.The research results have important guiding significance for the similar oil reservoirs by fire flooding.

关 键 词：注蒸汽 空气油比预测公式 原油改质 燃烧前缘 火驱生产特征 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程]