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Integration of Coiled-Tubing Underbalanced-Drilling Services To Improve Efficiency and Value

机译:集成油管欠平衡钻井服务以提高效率和价值

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Although Coiled Tubing Underbalanced Drilling has provenrnadvantageous in reducing formation damage, increasingrnpenetration rates, and potentially eliminating well stimulationrntreatments it is still regarded as one of the higher risk servicernoperations being performed in the world today. Somernoperators who have utilized Coiled Tubing UnderbalancedrnDrilling previously site that unreliable downhole tools, longrnrig-up times, and hole cleaning issues contribute to higherrncosts and unacceptable risks involved with this application. Inrnorder to maximize the advantages of Coiled TubingrnUnderbalanced Drilling and minimize the perceived risks,rncareful assessment and close scrutiny of each aspect of thernoperation must be carried out.rnThis paper outlines the planning and executionrnresponsibilities of two companies working synergistically tornprovide an operator with their expertise in each area ofrnservice. Contracting integrated work-over services for arnCoiled Tubing Underbalanced Drilling project on a well wherernprevious drilling operations had failed was felt necessary byrnthe well operator to maximize the wells potential, increase thernprobability of success, and minimize the risk involved. Wellrnhistory of the previous drilling attempts, pre-job planning andrnengineering, equipment and tool specifications, operationalrnexecution, and benefits achieved through an integratedrnapproach are discussed. The results of the drilling operationrnand suggested improvements of the integrated servicernapproach are also reviewed.
机译:尽管连续油管欠平衡钻井已被证明在减少地层损害,提高渗透率以及潜在地消除井眼增产措施方面具有优势,但仍被认为是当今世界上进行风险更高的服务之一。以前利用螺旋油管欠平衡钻探的某些操作者发现,不可靠的井下工具,较长的钻采时间和井眼清洁问题会导致较高的成本,并给该应用带来不可接受的风险。为了最大程度地发挥连续油管的优势-欠平衡钻井并最大程度地降低感知风险-必须对操作的各个方面进行仔细的评估和仔细检查。本文概述了两家公司的计划和执行职责,这些公司协同工作,以向运营商提供各自的专业知识服务范围。对于以前的钻井作业失败的井上的arnCoiled油管欠平衡钻井项目,承包综合修井服务是井作业者认为有必要的,以最大化井的潜力,增加成功的可能性并最小化所涉及的风险。讨论了以前的钻井尝试,作业前计划和工程,设备和工具规格,操作执行以及通过综合方法实现的收益的历史。还回顾了钻井作业的结果以及建议的综合维修方法的改进。

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