Title: Computer aided design model for integrated casing while drilling system for deepwater applications

Authors: Vamshikrishna Domala; Vinay Kumar Gupta; R. Sharma

Addresses: Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai, India ' Institute of Drilling Technology (IDT), Oil and Natural Gas Corporation Limited, Kaulagarh Road, Dehradun (UTR) – 248195, India ' Department of Ocean Engineering, Indian Institute of Technology Madras, Chennai, India

Abstract: This paper presents a CAD model for the design of casing for offshore applications and the results are utilised for the selection of appropriate connections in CwD. In our CAD model, the input parameters are the pore pressure and fracture pressure and we analyse various cementing procedures and arrive at selection guidelines to ensure that final choice is time efficient under the use of wire line retrievable bottom hole assembly or drillable drill shoe. Additionally, we analyse the casing design in the environment of integration and study the influence of casing design on BOP selection, production casing, and CwD rig, etc. Finally, we present a design example from real field with four casing, total depth of casing from sea bed 11,000 ft, and BOP with pressure rating of 10,000 psi, etc. [Received: May 3, 2013; Accepted: December 15, 2013].

Keywords: casing drilling; casing drive systems; bottom hole assembly; BHA; computer aided design; CAD; modelling; deepwater drilling; offshore drilling; casing design; pore pressure; fracture pressure; cementing procedures; drill shoe; oil and gas exploration.

DOI: 10.1504/IJOGCT.2015.070837

International Journal of Oil, Gas and Coal Technology, 2015 Vol.10 No.2, pp.125 - 160

Received: 08 May 2013
Accepted: 15 Dec 2013
Published online: 30 Jul 2015 *

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