钻井风险评价系统DrillRisk的研发与应用

发布时间：2018-01-05 08:11

本文关键词：钻井风险评价系统DrillRisk的研发与应用　出处：《石油钻探技术》2017年05期 　论文类型：期刊论文

【摘要】：钻井风险控制是提高钻井综合效率、确保施工安全和实现降本增效的关键环节,但目前国内研发的钻井实时风险监测系统缺乏钻前潜在风险预测及钻后风险跟踪评价的能力。基于钻井风险发生机理,采用地质因素和工程因素相耦合的方法,建立了钻井潜在风险可能性及严重度量化评价模型,基于钻井风险发生时的征兆规律建立了风险监测预警模型,同时融合钻井风险案例知识库,研发了钻井风险评价系统DrillRisk,构建了"钻前—钻中—钻后"的闭环评价体系。利用5口井的历史数据进行了模拟应用和模型改进优化,并在10余口井进行了现场应用,结果表明,在地质资料较为全面准确的条件下,常见风险的发现率达到86%,对高级别风险的防控起到了重要作用。钻井风险评价系统DrillRisk为区块钻井方案持续优化和最终实现"无风险"钻井目标提供了可行的技术手段。
[Abstract]:Drilling risk control is a key link to improve drilling comprehensive efficiency, ensure construction safety and achieve cost reduction and efficiency gains. However, the real-time drilling risk monitoring system developed in China lacks the ability of pre-drilling potential risk prediction and post-drilling risk tracking evaluation. Based on the drilling risk mechanism, the method of coupling geological and engineering factors is adopted. A quantitative evaluation model of drilling potential risk possibility and severity is established, and a risk monitoring and warning model based on the occurrence of drilling risk is established. At the same time, the drilling risk case knowledge base is integrated. A drilling risk assessment system, Drill Risk, is developed, and a closed-loop evaluation system of "pre-drilling, mid-drilling and post-drilling" is constructed. The simulation application and model improvement optimization are carried out using the historical data of five wells. It has been applied in more than 10 wells. The results show that under the condition of comprehensive and accurate geological data, the detection rate of common risks reaches 86%. It plays an important role in preventing and controlling the high level risk. The drilling risk evaluation system (DrillRisk) provides a feasible technical means for the continuous optimization of the block drilling scheme and the ultimate realization of the "risk-free" drilling target.
【作者单位】：中国石化石油工程技术研究院;
【基金】：中国石化科技攻关项目“钻井风险控制系统研发”(编号:P13093);“四川盆地深探井钻完井及测试关键技术研究”(编号:P16084)资助
【分类号】：TE28
【正文快照】： 随着油气勘探开发不断向深层、非常规油气发展,钻井作业的潜在风险越来越高,钻井风险控制已经成为提高钻井综合效率、确保施工安全和实现降本增效的关键环节之一。国外Schlumberger公司开发的无风险钻井系统NDS基本实现了钻井全过程的风险评价[1],取得了一定应用效果。国内近

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