Integrated Rock Mechanics and Drilling Fluid Design Approach to Manage Shale Instability

Abstract

Integrated Rock Mechanics and Drilling Fluid Design Approach to Manage Shale Instability C.P. Tan; C.P. Tan CSIRO Petroleum Search for other works by this author on: This Site Google Scholar S.S. Rahman; S.S. Rahman U. of New South Wales Search for other works by this author on: This Site Google Scholar B.G. Richards; B.G. Richards Gotechn Research Pty Ltd Search for other works by this author on: This Site Google Scholar F.K. Mody F.K. Mody Baroid Drilling Fluids, Inc. Search for other works by this author on: This Site Google Scholar Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, July 1998. Paper Number: SPE-47259-MS https://doi.org/10.2118/47259-MS Published: July 08 1998 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Tan, C.P., Rahman, S.S., Richards, B.G., and F.K. Mody. "Integrated Rock Mechanics and Drilling Fluid Design Approach to Manage Shale Instability." Paper presented at the SPE/ISRM Rock Mechanics in Petroleum Engineering, Trondheim, Norway, July 1998. doi: https://doi.org/10.2118/47259-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE/ISRM Rock Mechanics in Petroleum Engineering Search Advanced Search AbstractIn recognising the petroleum industry's need for a technology to design optimal drilling fluid (weight, type and chemistry) to solve and manage shale instability problems, a collaborative project has been undertaken to develop the technology which will provide the basis for state-of-the-ant drilling fluid design criteria. The key drilling fluid-shale interaction mechanisms included in the study are mud pressure penetration, chemical potential and swelling-hydrational stress.Fundamental concepts, processes, models and a range of novel test equipment and procedures for laboratory simulation of the mechanisms were developed. The laboratory test results were used in the refinement and verification of the models. The verified models, which have been integrated in a wellbore stability analysis software, were used to conduct analyses to demonstrate the effects of shale and drilling fluid properties on time-dependent wellbore (in)stability.The understanding of the drilling fluid-shale interaction mechanisms and the development of the capacity to model them enabled the development of drilling fluid design charts. These charts, together with a shale property database and property correlations, provide a pragmatic and effective approach for designing optimal drilling fluids to manage shale instability efficiently.P. 291 Keywords: pore pressure, drilling fluids and materials, pressure penetration, pore fluid, upstream oil & gas, shale, hydrational stress, mud filtrate, coefficient, simulated pore fluid Subjects: Wellbore Design, Drilling Fluids and Materials, Wellbore integrity This content is only available via PDF. 1998. Society of Petroleum Engineers You can access this article if you purchase or spend a download.