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A review on casing while drilling technology for oil and gas production with well control model and economical analysis

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Petroleum 2019年第1期5卷 1-12页

作者： Dipal Patel vivek thakar Sivakumar Pandian Manan Shah Anirbid Sircar School of Petroleum Technology Pandit Deendayal Petroleum UniversityGandhinagar382007India

The extraction of petroleum fluids from sub-surface accumulations mandates the drilling of a well into the formation containing the *** drilling techniques have evolved over time to overcome several challenges while some of the issues still prevail with the currently used drilling practices like loss circulation,large tripping time to change bottom hole assembly,stuck pipe problems and low well bore stability,to name a *** decrease the drilling efficiency and increase the Non-Productive Time(NPT)of this highly capitalintensive industry encouraging the Petroleum Industry to look for new *** while Drilling(CwD)is a technique of drilling which has been proven to alleviate many of the problems faced while *** this method,drilling and casing of a well bore is carried out simultaneously,which improves the drilling efficiency by reducing the *** has proven to be beneficial in controlling loss circulation and improving wellbore stability by‘Plastering’effect,high quality cement job and increased rig floor *** uses smaller rig and less fuel thereby reducing carbon footprint in the *** paper studies comprehensive well control and casing string design *** encourages its application that has been discussed in the paper.A case study on the application of CwD in Malay basin for top hole drilling is ***,the paper briefly outlines the technical challenges that need attention to get better results from CwD.

关键词： Casing while drilling Non productive time Plastering effect Well control

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