深层‒超深层碳酸盐岩储层测井评价关键技术进展
武宏亮 , 赖强 , 冯周 , 信毅 , 李潮流 , 刘鹏 , 李雨生 , 田瀚
地球科学 ›› 2025, Vol. 50 ›› Issue (07) : 2844 -2860.
深层‒超深层碳酸盐岩储层测井评价关键技术进展
Progress on Key Technologies for Logging Evaluation of Deep and Ultra⁃Deep Carbonate Reservoirs
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随着我国油气勘探不断向深层‒超深层领域拓展,测井面临着超高温高压、恶劣井筒环境和低信噪比等技术挑战.针对深层‒超深层碳酸盐岩储层测井评价难点,重点讨论了目前制约油气勘探开发的四项关键技术问题:岩性岩相识别、有效缝洞储层表征、流体性质判别和井旁隐蔽缝洞储层评价.针对上述难题,提出基于岩心刻度成像测井,明确不同岩相关键图像特征,形成在岩心约束下的测井岩相识别方法,同时深入分析有效缝洞储层典型响应特征,建立裂缝、溶蚀孔洞识别和定量表征方法;针对高阻背景地层,通过阵列感应测井资料重新处理,实现油基泥浆条件下储层流体性质的准确判别;通过远探测横波成像技术实现井旁3~50 m范围内隐蔽缝洞储层的识别,拓展测井径向探测深度,形成了以成像测井系列为主的深层‒超深层碳酸盐岩储层测井评价技术体系,由此反映中国深层‒超深层碳酸盐岩储层测井评价技术近年来的创新与发展.
As oil and gas exploration extends into deep and ultra-deep areas,well logging is faced with great technical challenges such as ultra-high temperature and high pressure,harsh wellbore environment and low signal-to-noise ratios. Addressing difficulties in logging evaluation of deep/ultra-deep carbonate reservoir,this paper focuses on four key technical problems that restrict the exploration and development of deep and ultra-deep carbonate fields in China: lithology and lithofacies identification,characterization of effective fracture-cave reservoirs,fluid property identification and evaluation of subsurface fracture-cave reservoirs. In order to solve these problems,based on the core-calibrated image logging,the key image features corresponding to different rocks are identified,and the logging lithofacies identification method under the core constraint is formed. Based on in-depth analysis of typical logging response characteristics of effective fracture-cavity reservoirs,a method for identifying and quantitatively characterizing fractures and solution holes is established. For the high-resistivity background formation,the accurate identification of reservoir fluid properties under oil-based mud conditions is realized by re-processing the array induction logging data. The acoustic reflection imaging technology was used to identify the hidden fracture-cave reservoirs within 3-50 m of the borehole,expanding the radial detection scope Consequently,a technical framework for logging evaluation of deep/ultra-deep carbonate reservoirs⁃centered on imaging logging technologies has been developed,which reflects the innovation and development of logging evaluation technology.
深层碳酸盐岩储层 / 岩性扫描测井 / 电成像测井 / 阵列感应测井 / 远探测声波测井 / 测井评价 / 石油地质学.
deep carbonate reservoir / lithology scanning logging / electrical imaging logging / array induction logging / acoustic reflection logging / log evaluation / petroleum geology
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中国石油油气与新能源公司科技专项(2023YQX10101)
国家自然科学基金重点项目(U24B2029)
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