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Blending technologies can eliminate casing strings

机译:混合技术可以消除套管现象

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摘要

DURING RECENT ATTEMPTS to lower drilling' costs in several fields, a practical blend of several oilfield technologies was developed that may set a substantial, cost-effective trend in the evolution of drilling techniques. The process involves combining underbal-anced drilling (UBD) with casing drilling (CD), while simultaneously using managed pressure (MP) techniques to widen the window of pore pressure ranges that can be addressed in an open hole section. The inventive method, dubbed UBCD-MP, is especially exciting because it has the potential to eliminate the need for one or more intermediate casing strings. This is a major milestone in the drilling process that could dramatically reduce cost, especially in areas where casing strings were historically seen not as an option, but as a costly necessity. The UBCD-MP blend draws advantages from several tech-niques to create a unique, dynamic application that can be designed in the field for maximum efficiency. By harnessing the latest technology to analyze data, the technique has proven effective for drilling through formations where conventional methods are not practical, or have failed in the past.
机译:在最近的尝试中,为了降低多个领域的钻井成本,开发了几种油田技术的实用混合物,这可能在钻井技术的发展中树立了实质性,具有成本效益的趋势。该过程涉及将欠平衡钻探(UBD)与套管钻探(CD)结合在一起,同时使用管理压力(MP)技术扩大可在裸眼井段中解决的孔隙压力范围的窗口。被称为UBCD-MP的本发明方法特别令人兴奋,因为它具有消除对一个或多个中间套管柱的需求的潜力。这是钻探过程中的一个重要里程碑,可以大大降低成本,尤其是在历史上人们不认为套管柱是一种选择,而是必须这样做的地区。 UBCD-MP混合利用了多种技术的优势来创建独特的动态应用程序,可以在现场进行设计以实现最大效率。通过利用最新技术来分析数据,该技术已被证明可有效地钻穿常规方法不可行或过去失败的地层。

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