Technical Session 9 – Lost Circulation & Wellbore Strengthening

Posted on 10 February 2013

Editor’s note: These abstracts have been edited for space and clarity. This program is current as of 15 January 2013. Additions, withdrawals and other changes to the conference program after this date may not be reflected. Click here for the most updated program.

TECHNICAL SESSION 9: LOST CIRCULATION AND WELLBORE STRENGTHENING

SPE/IADC 163481

Practical Guide to Lost Returns Treatment Selection Based on a Holistic Model of the State of the Near Wellbore Stresses, R.D. Duffadar, F.E. Dupriest, S.C. Zeilinger, Exxon Mobil Corp

This paper presents a holistic model describing the relationship between the various common lost returns treatments, the degree to which each is capable of maintaining or enhancing borehole integrity, and corresponding methodology for selecting the appropriate treatments for given situations.

SPE/IADC 163512

On the Shear Degradation of Lost Circulation Materials, P. Valsecchi, S.C. Zeilinger, Exxon Mobil Corp

In the present paper, a harder look is taken on the very concept of “shear degradation” and on its effectiveness in capturing the progressive size reduction of lost circulation material during circulation. Using dimensional analysis, the tendency of a material to degrade can be determined in advance. Density of the particles and suspending fluid, size of particles and fluid viscosity are examined and understanding the underlying physics enables the selection of a more shear-resistant engineered-particle drilling fluid, regardless of its application.

SPE/IADC 163434

Wellbore Strengthening – Nano-Particle Drilling Fluid Experimental Design Using Hydraulic Fracture Apparatus, C.O. Nwaoji, G. Hareland, University of Calgary; M. Husein, University of Calgary Library – Swets; R. Nygaard, Missouri University of Science and Tech; M.F. Zakaria, University of Calgary

This paper introduces a novel LCM drilling fluid blend, which has been used successfully in the laboratory to achieve very impressive wellbore strengthening results in both permeable and impermeable formations for both water-based and invert emulsion- (diesel oil) based mud.

SPE/IADC 163514

Numerical and Analytical Investigation of Smearing Effect in Casing Drilling Technology: Implications for Enhancing Wellbore Integrity and Hole Cleaning, S. Salehi, University of Louisiana; J. Mgboji, TESCO Corp; A. Aladasani, Kuwait Oil

This paper presents numerical and analytical models to optimize the parameters in casing drilling applications. Advance finite-element methods has been used to model the near wellbore area with considering various pipe/open-hole ratio and filter cake penetration in each simulation. The models will consider geomechanical, poro-elastic parameters of the formations, which are coupled with hydraulic model to consider drilling fluids properties. Analytical models were used to investigate the RPM, rotation mode and boundary conditions for the contact between casing and filter cake.

E-POSTER:

SPE/IADC 163486

Analytical Model to Characterize “Smear Effect” Observed While Drilling with Casing, A. Kumar, University of Houston; R. Samuel, Halliburton

This study analyzes the theory behind the phenomenon of the smear effect mechanism using case studies and existing literature and proposes an analytical model to estimate the improvement in fracture gradient based on the drilling parameters and reservoir properties. The formation of the smear zone is addressed by broadly classifying this mechanism into four steps and modelling their contribution to the smear effect.

Leave a Reply

*

FEATURED MICROSITES


Recent Drilling News

  • 27 March 2015

    Gravity-deployed carbon composite cable completes first commercial deployment offshore Norway

    Ziebel, a Stavanger-based provider of specialist well intervention services for the oil and gas industry, announced that its Z-Line gravity-deployed...

  • 27 March 2015

    Petronas’ INSTEP training institute plans improvements for integrated, experiential learning

    Institut Teknologi PETRONAS (INSTEP) takes realism seriously when it comes to experiential learning – seriously enough to be planning...

  • 26 March 2015

    Wood Mackenzie: Falling costs to soften blow of slashed exploration budgets

    Exploration budget cuts in 2015 will average 30%, but that will be matched by an approximately equal fall in exploration costs...

  • 25 March 2015

    C&J Energy Services merges with Nabors’ completion/production services

    C&J Energy Services, (C&J) and Nabors Industries (Nabors) announced the completion of the combination of C&J with Nabors’ completion...

  • 25 March 2015

    Douglas-Westwood: Oilfield services expenditure to decline by 30% in 2015

    Global oilfield services (OFS) markets are facing difficult headwinds as a function of commodity prices...

  • Read more news