石油工程师协会技术年会论文spe.pdf

石油工程师协会技术年会论文spe166112SPE 166112
All in One for Casing while Drilling Technology: Numerical, Analytical, and
Experimental Results and Field Observations
Salehi, S., University of Louisiana at Lafayette, Karimi, M., Weatherford, Shahri, M. P., University of Tulsa,
Aladsani, A., Kuwait pany, Ezeakacha, C., University of Louisiana at Lafayette
Copyright 2013, Society of Petroleum Engineers

This paper was prepared for presentation at the SPE Annual Technical Conference and Exhibition held in New Orleans, Louisiana, USA, 30 September–2 October 2013.

This paper was selected for presentation by an SPE mittee following review of information contained in an abstract submitted by the author(s). Contents of the paper have not been
reviewed by the Society of Petroleum Engineers and are subject to correction by the author(s). The material does not necessarily reflect any position of the Society of Petroleum Engineers, its
officers, or members. Electronic reproduction, distribution, or storage of any part of this paper without the written consent of the Society of Petroleum Engineers is prohibited. Permission to
reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of SPE copyright.


Abstract
Casing while Drilling (CwD) is an efficient method by which to increase the fracture gradient in narrow pore-fracture
pressure sedimentary basins and deep offshore applications. It offers hydraulic improvements and the ability to plaster
cuttings to the wellbore wall, which can enhance the wellbore’s hoop stress by wedging the created fractures. Although
essful field applications of increasing wellbore integrity have been reported, uncertainties remain regarding the
mechanisms and how to operationally capture the maximum attainable wellbore pressure. These uncertainties include the
plexities of fluids, role of Particle Size Distribution (PSD) and ho