Application of integrated positioning, measurement, logging and guiding in improving the drilling rate of horizontal wells
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摘要: 水平井优质储层钻遇率是单井高产的关键因素之一,直接影响着水平井的产量高低。以地震、钻井、测井、录井、地质导向资料为基础,通过对中石化主要水平井区块储层钻遇率情况进行数理统计与分析,总结了影响不同油藏类型水平井储层钻遇率的主要因素,提出了应用水平井定测录导一体化技术提高水平井储层钻遇率的技术路线,列举了典型应用实例,梳理了水平井定测录导一体化技术的下一步攻关方向。研究表明: 2021年中国石油化工集团有限公司(下称中石化)施工水平井平均储层钻遇率为93.7%,因受到地质情况复杂、测控仪器盲区长、专业融合不够等因素制约,钻遇率仍具有较大的提升空间; 定测录导一体化技术能够将地质、地震、定向、测井、录井、导向多专业技术及资料集成融合,通过专家在线支持、前后方联动,有效解决了局部微构造复杂、断裂带发育、储层平面岩性变化大、井轨迹“上易出层,下易触水”等水平井钻井技术难题,提高了水平井储层钻遇率; 定测录导一体化技术下一步攻关方向为分区域建立专家支持团队、强化多专业深度融合、加大新技术的应用,以上认识对我国油气田的勘探与开发具有十分重要的意义。Abstract: Drilling rate of high-quality reservoir in horizontal well is one of the key factors for high production of single well, which directly affects the production of horizontal well. Based on seismic, drilling, well logging, mud logging and geological orientation data, the authors summarized the influence factors of drilling rate in horizontal well reservoir with different reservoir type, and put forward the application of the integrated of positioning, measurement, logging and guiding in improving the drilling rate of horizontal well reservoir, through the mathematical statistics and analysis of horizontal well drilling rate in the main block reservoirs of Sinopec. Besides, the typical application examples are listed, and the future research direction of integrated of horizontal well positioning, measurement, logging and guiding is summarized. The results show that the average drilling rate of petrochemical horizontal wells in Sinopec in 2021 is 93.7%. Due to the constraints of complicated geological conditions, long blind area of measurement and control instruments, and insufficient professional integration, this drilling rate still needs to be improved. The integration measurement technology is able to make a fusion of professional technology and information integration, including geology, seismic, directional, logging and guiding. Combing with the online-experts supports and linkage between front and back, integration measurement technology can be used effectively to solve the technical problems in drilling horizontal well, such as complex local micro structure, fault development and severe change of lithology in reservoir plane, and well trajectory with easy to layer, easy to touch water, which improve the drilling rate of horizontal wells. The next step of the integration measurement technology focus on the establishment of expert's team in different regions, strengthening the deep integration of multiple specialties, and increasement of application of new technologies, which has great significance to the exploration and development of oil and gas fields in China.
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Key words:
- horizontal well /
- reservoir drilling rate /
- integrated of positioning /
- measurement
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