地质导向钻井着陆关键技术及分析图版

Key technology and analysis chart of geosteering drilling landing

林昕,苑仁国,谭伟雄,郭家,佟昕航,陈玉山

Key technology and analysis chart of geosteering drilling landing

中海油能源发展股份有限公司工程技术分公司，天津 300452

CNOOC EnerTech-Drilling & Production Co., Tianjin 300452, China

地质导向钻井广泛应用于水平井着陆，完全依赖人工跟井的传统导向技术已不能适应当下上游勘探开发数字化、信息化的发展趋势。为此，文中研究了针对地质导向钻井着陆过程分析的算法流程，该研究从目的层预测和轨迹控制计算2个方面展开，提出了采用分析图版对着陆作业进行分析的方法。分析图版可以将地质预测和工程实现有机结合，并以直观的图像形式予以展示，方便分析人员实时获取着陆作业的关键信息，实现对着陆作业的过程控制。模拟分析证明该方法可以实现着陆作业的随钻自动分析预测，相比人工预测精度更高。该研究为水平井着陆作业优化提供了依据，降低了作业风险，提高了协同决策分析效率，对于实现水平井着陆作业、地质工程一体化升级具有参考价值。 

Geosteering drilling is widely used in the landing of horizontal wells. The traditional geosteering technology, which completely relies on manual analysis, can not adapt to the current development trend of upstream E&P digitization and informatization. Therefore, the algorithm flow of landing process analysis for geosteering drilling is studied. The research is carried out from two aspects of target layer prediction and trajectory control calculation, and the method of using analysis chart to analyze landing operation is proposed. The analysis chart can combine geological prediction and engineering, and display them in the form of intuitive images, which is convenient for analysts to obtain the key information of landing operation in real time and realize the process control of landing operation. Simulation analysis shows that this method can realize automatic analysis and prediction of landing operation while drilling, which has higher accuracy than manual prediction. This study provides the basis for the optimization of horizontal well landing operation, reduces the operation risk and improves the efficiency of collaborative decision-making analysis, and has reference value for the realization of horizontal well landing operation and geology-engineering integration.

10.6056/dkyqt202105023