Underbalanced Drilling: Limits and Extremes

Underbalanced Drilling: Limits and Extremes

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The present crude oil and natural gas reservoirs around the world have depleted conventional production levels. To continue enhancing productivity for the remaining mature reservoirs, drilling decision-makers could no longer rely on traditional balanced or overbalanced methods of drilling. Derived from conventional air drilling, underbalanced drilling is increasingly necessary to meet todaya€™s energy and drilling needs. While more costly and extreme, underbalanced drilling can minimize pressure within the formation, increase drilling rate of penetration, reduce formation damage and lost circulation, making mature reservoirs once again viable and more productive. To further explain this essential drilling procedure, Bill Rehm, an experienced legend in drilling along with his co-editors, has compiled a handbook perfect for the drilling supervisor. Underbalanced Drilling: Limits and Extremes, written under the auspices of the IADC Technical Publications Committee, contain many great features and contributions including: a€c Real case studies shared by major service companies to give the reader guidelines on what might happen in actual operations a€c Questions and answers at the end of the chapters for upcoming engineers to test their knowledge a€c Common procedures, typical and special equipment involved, and most importantly, the limits and challenges that still surround this technology.The typical equipment package on this type of well would include the following: a€c High-pressure RCD a€c Choke manifold with a remotely operated ... flareline gas meter In addition to the equipment listed above, a PWD tool is often included in the bottom-hole assembly to monitor real-time pressures. Figure 11a€“15 shows the process flow diagram (PFD) for high pressure application using the TOGA system.

Title:Underbalanced Drilling: Limits and Extremes
Author:Bill Rehm, Arash Haghshenas, Amir Saman Paknejad, Abdullah Al-Yami, Jim Hughes
Publisher:Elsevier - 2013-11-25


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