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

  • 30 September 2014

    Statoil, Shell and Sonatrach awarded acreage onshore Algeria

    Statoil and Shell were awarded the Timissit Permit License in the Illizi-Ghadames Basin onshore Algeria. The license is in southeastern Algeria and covers an area of 2,730 sq km...

  • 29 September 2014

    Rosneft discovers oil in Kara Sea

    Rosneft successfully completed the drilling of the Universitetskaya-1 well in the Arctic – the northernmost well in the world, according to the company, and discovered oil at the East-Prinovozemelskiy-1 license area...

  • 26 September 2014

    Statoil and PL713 partners discover gas in Pingvin prospect in Barents Sea

    Statoil has together with PL713 partners made a gas discovery in the Pingvin prospect in the Barents Sea. The discovery is a play opener in an unexplored frontier…

  • 26 September 2014

    Maersk Drilling names fourth ultra-deepwater drillship, delivery expected in Q4

    Maersk Drilling’s fourth ultra-deepwater drillship was named Thursday morning in a ceremony at the Samsung Heavy Industries (SHI) shipyard in Geoje-Si...

  • 25 September 2014

    Eni awarded 3 new exploration licenses in Egypt

    Eni was the successful bidder of three new exploration licenses in Egypt as a result of the competitive 2013 EGPC and EGAS bid rounds. The new licenses will be formally awarded after the ratification...

  • Read more news