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Managed-Pressure Drilling—A Solution for Challenging Wells in Vietnam

Managed-pressure drilling (MPD) has been used in Vietnam since 2007 to address a number of drilling and reservoir challenges. The main application of MPD has been to overcome the challenges of granite-basement, fractured and vugular carbonate, high-pressure/high-temperature (HP/HT), and overpressured clastic reservoirs. This paper examines the procedural approaches of MPD, including constant bottomhole pressure (CBHP), equivalent-circulating-density (ECD) management, early kick detection, and pressurized-mud-cap drilling (PMCD).

MPD Techniques and Applications

The International Association of Drilling Contractors (IADC) defines MPD as “an adaptive drilling process used to precisely control the annular pressure profile throughout the wellbore. The objectives are to ascertain the downhole pressure environment limits and to manage the annular hydraulic pressure profile accordingly. MPD is intended to avoid continuous influx of formation fluids to the surface. Any influx incidental to the operation will be safely contained using an appropriate process.”

This article, written by Special Publications Editor Adam Wilson, contains highlights of paper SPE 165775, “Managed-Pressure Drilling—A Solution for Drilling the Challenging and Undrillable Wells in Vietnam and Southeast Asia,” by Ben Gedge, SPE, Harpreet Kaur Dalgit Singh, Elsofron Refugio, and Bao Ta Quoc, Weatherford Asia Pacific, and Nguyen Viet Bot, PVD Well Services, prepared for the 2013 SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, 22–24 October. The paper has not been peer reviewed.
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Managed-Pressure Drilling—A Solution for Challenging Wells in Vietnam

01 February 2014

Volume: 66 | Issue: 2

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