摘要
阿北凹陷构造活动剧烈,地层破碎,地震资料品质较差,且存在稠油油藏,成藏规律不清。为理清该区油气富集规律,开展精细构造解释、沉积储层研究和成藏条件分析,明确凹陷地质特征,确定稠油油藏为腾一上段生油次洼供烃的原生稠油,分布范围较小。在该区设计钻探了一批井位,在第一口井X16井完钻后,应用MFE射孔联作+WDT无线传输地层测试技术,采用二开二关开抽汲工作制度,进行液性及产能分析和储层综合评价,落实了阿北凹陷原油相对密度(20℃)0.8769 g/cm3,黏度(50℃)39.03 mPa·s,为低硫高含蜡多胶质原油。该井原油物性较好,测试结论为油层,之后对该井进行常规试油,获高产工业油流。地层测试技术的应用验证了地质认识的真实性,为阿北凹陷勘探部署提供了依据。
Abei depression is developed with strong tectonic activities,fragmented stratigraphy,poor quality seismic data,unclear reservoir-forming rule and thick oil reservoirs.In order to clarify the law of oil and gas enrichment in the research area,this research carry out fine tectonic interpretation,sedimentary reservoir study and reservoir formation conditions analysis.The petroleum geological characteristics of the depression is clarified,as well as the small ranged original heavy oil,which is supplied by the oil-generating sags in the upper part of first section of Tengge′er formation.A number of wells were designed and drilled in the research area.After the completion of the first well X16,the formation testing technology,combining MFE-perforation combination operation with WDT wireless transmission test technology,was applied in time to conduct fluid and capacity analysis,as well as the comprehensive evaluation of the reservoir.The relative density of crude oil(20℃)is 0.8769 g/cm3,and the viscosity(50℃)is 39.03 mPa·s.The crude oil was analyzed as low-sulfur,high-wax and multi-gelatinous.The physical properties of crude oil in this well were good and the test was concluded to be an oil formation,followed by a conventional oil test to obtain a high-yield industrial oil stream.It confirms that formation testing technique is an effective means to verify geological understandings.
作者
张宇飞
王攀
淡伟宁
田然
王成云
孙瑞娜
ZHANG Yufei;WANG Pan;DAN Weining;TIAN Ran;WANG Chengyun;SUN Ruina(Exploration and Development Research Institute,PetroChina Huabei Oilfield Company,Renqiu,Hebei 062552,China)
出处
《油气井测试》
2021年第3期58-63,共6页
Well Testing
基金
中国石油天然气股份有限公司重大科技项目“华北油田持续有效稳产勘探开发关键技术研究与应用”(2017E-15)。
关键词
阿北凹陷
DST测试
常规试油
稠油油藏
成藏机理
评价解释
产能分析
Abei depression
DST test
conventional oil production test
heavy oil reservoir
enrichment principle
evaluation
productivity analysis
