渤海海域变质岩潜山储层有效性录井综合评价技术  

Comprehensive Evaluation Technology of Metamorphic Submarine Reservoir Effectiveness Mud-Logging in Bohai Sea Area

作　　者：谭忠健 邓津辉 张国强 李辉[2] 李鸿儒[2] 张志虎[2] 刘志伟[2] Tan Zhongjian;Deng Jinhui;Zhang Guoqiang;Li Hui;Li Hongru;Zhang Zhihu;Liu Zhiwei(CNOOC(China)Tianjin Company,Tianjin 300459,China;CNOOC Energy Development Co.,Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]中海油能源发展股份有限公司,天津300459

出　　处：《特种油气藏》2023年第5期11-17,共7页Special Oil & Gas Reservoirs

基　　金：中海石油(中国)有限公司重大科技专项“渤海油田上产4000万吨新领域勘探关键技术”(CNOOC-KJ 135 ZDXM36 TJ 08 TJ);中海石油(中国)有限公司综合科研项目“储层有效性录测一体化定量评价技术研究”(YXKY-2019-TJ-03)。

摘　　要：变质岩潜山岩性复杂多样,储层非均质性强,常规录井方法仅能依据油气显示定性判断潜山储层的发育位置,难以对潜山储层物性进行准确识别。针对该问题,从综合地质实验和微钻模拟实验入手,应用XRF元素录井、XRD全岩衍射录井及工程录井数据,建立了变质岩潜山浅色矿物录井表征技术、变质岩潜山基岩力学录井表征技术及变质岩潜山可钻性评价技术,明确了储层裂缝发育与岩石矿物组分、力学特性及可钻性的内在表征关系,形成以岩石矿物学、岩石力学及岩石破碎学多个角度为基础的变质岩潜山储层有效性录井综合评价技术及定量评价标准。研究成果在渤海海域渤中坳陷变质岩潜山50余口井得到应用,与测井解释结论对比,储层有效性录井解释的平均符合率高达81.7%。该技术在渤海海域渤中坳陷变质岩潜山储量的发现和评价中发挥了重要作用,为中途测试、完钻等重大勘探决策提供了可靠依据,具有良好的应用前景。The lithology of metamorphic buried hill is complex and diverse,and the reservoir is highly non-homogenous.The conventional mud-logging method can only qualitatively judge the development location of the submarine reservoir based on oil and gas shows,and it is difficult to accurately identify the physical properties of the submarine reservoir.To address this problem,the light-colored mineral mud-logging characterization technology of metamorphic buried hills,the bedrock mechanics mud-logging characterization technology of metamorphic buried hills,and the drillability evaluation technology of metamorphic buried hills were innovatively established through starting from comprehensive geological experiments and microdrilling simulation experiments and applying the XRF elemental logging,the XRD whole-rock diffraction mud-logging and engineering mud-logging data to form comprehensive evaluation techniques and quantitative evaluation standards for mud-logging on the effectiveness of metamorphic buried hill reservoirs based on various perspectives such as rock mineralogy,rock mechanics and rock fragmentation.The research results have been applied to more than 50 wells in the metamorphic buried hills of the Bozhong Depression in the Bohai Sea area,and the average compliance rate of the reservoir effectiveness mud-logging interpretation is as high as 81.7%when compared with the conclusion of the logging interpretation.This technology plays an important role in the discovery and evaluation of reservoirs in the metamorphic buried hills of the Bozhong Depression in the Bohai Sea area,and provides a reliable basis for major exploration decisions such as midway testing and completion drilling,and has a good application prospect.

关 键 词：变质岩潜山 储层有效性 浅色矿物指数 基岩力学 机械比能 录井综合评价 渤中坳陷 

分 类 号：TE122[石油与天然气工程—油气勘探]