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author:"Dupriest"

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Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, March 5–7, 2013
Paper Number: SPE-163481-MS
... levels of difficulty of treatment. It is the authors' belief that in order to arrest fracture growth to stop losses, (i) the fracture tip must be isolated from wellbore pressure, and (ii) the fracture width at the borehole must be increased sufficiently to achieve the required hoop stress ( Dupriest 2005...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 1–3, 2011
Paper Number: SPE-139849-MS
... display of MSE ( Dupriest and Koederitz 2005 ; Koederitz and Weis 2005) . In these early attempts, the authors were often working on rigs having control systems with no user-selectable setpoints. Examples of such systems include pneumatic autodrillers for control of weight-on-bit (WOB), and manual...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, March 1–3, 2016
Paper Number: SPE-178848-MS
... of the damage was. Similar damage can be seen in other hard laminated drilling, which increased the interest of the authors in studying the physics and mitigating practices as this type of hard laminated lithology is common in many of the most active unconventional plays. The 6″ bit study was an integral...
Proceedings Papers

Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 3–5, 2020
Paper Number: SPE-199599-MS
... and engineering redesign ( Waughman et.al. 2003 , Dupriest et.al, 2005 , Remmert et.al. 2007 ). Because there are numerous geologic units with varying dysfunctions, the authors have included a detailed discussion of the dominant issues in each. Figure 2 shows a generic example of a Geologic Road Map...
Journal Articles
SPE Drill & Compl 36 (02): 320–337.
Paper Number: SPE-204231-PA
Published: 16 June 2021
... reflects the effect of cuttings removal on ROP1 (ft/hr). The second category consisting of factors that fail to transmit the energy supplied at the surface to the bottom of the hole is bit balling ( Dupriest 2006 ). Bit balling is the phenomenon of the sticking of rock particles on the face...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, February 2–4, 2010
Paper Number: SPE-128712-MS
... on the experience in coal drilling and strategies to avoid or overcome these challenges. The practices used to drill coals vary, and many appear to be contradictory. One design decision that is often debated is whether it is generally more effective to increase or decrease the fluid density. Various authors have...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-119375-MS
...), borehole oscillations (Pastusek and Brackin 2003, Boualleg et al. 2006), hole spiraling (Gaynor et al. 2001), and premature failure of downhole tools (Bailey et al. 2008, Mitchell and Allen 1987). Dupriest et al. (2005) demonstrated that the presence of whirl in the bit itself may be observed by evaluating...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 4–7, 2009
Paper Number: SPE-124870-MS
... (Dupriest and Koederitz, 2005; Dupriest, 2006). The Fast Drill Process makes use of the Mechanical Specific Energy (MSE), originally described by Simon (1963) and Teale (1964) and defined in a later section, to diagnose and correct drilling dysfunctions in real time. The focus of this paper is on two...
Proceedings Papers

Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 3–5, 2020
Paper Number: SPE-199655-MS
... indicate a decrease in WOB and bit engagement. Therefore, whirl could become less suppressed which could induce damaging vibrations in the bit and motor ( Dupriest and Koederitz 2002 ). In addition, a reduction in differential pressure would obviously reduce the rate of penetration as well offsetting...
Proceedings Papers

Paper presented at the SPE Intelligent Energy International, March 27–29, 2012
Paper Number: SPE-150208-MS
... and numerous papers have described the workflow and specific operational practices ( Dupriest, 2006 , Dupriest et. al, 2010 ). However, the critical role of digital data within this process has not previously been discussed. Although FDP workflow is tailored to the operator's organization, there are many...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, March 4–6, 2008
Paper Number: SPE-112656-MS
... In the mid 1990's, the operator developed a family of practices for managing lost returns that are referred to as the Fracture Closure Stress (FCS) Operational Practices (Dupriest 2005). These practices are now applied uniformly worldwide by operator's affiliates, and the success rate in permeable formations...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference, March 4–6, 2008
Paper Number: SPE-112650-MS
... drilling results, including increased on-bottom drilling time, longer tool life, higher Rate of Penetration (ROP), reduced non-productive time associated with tripping, and even better hole quality. As use of the operator's ROP management process has spread through the company (Dupriest, 2005), downhole...
Proceedings Papers

Paper presented at the IADC/SPE Drilling Conference and Exhibition, February 2–4, 2010
Paper Number: SPE-128129-MS
... in the operator's lab tests have consistently been shear failures within the cake. Consequently, the authors believe shear within the cake to be the dominant mechanism in the field. If the pullout force is dependent on cake shear strength, the sticking tendency can be reduced by practices that reduce...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 27–29, 2014
Paper Number: SPE-170904-MS
.... Or it may vary with small changes in BHA design if they cause resonance at rotary speeds near the operating speed. Figure 1a Sine wave (whirl) in BHA causes lateral displacement at bit, and low drill rate Figure 1b Bit whirl enhances side-cutting and borehole patterns ( Dupriest et.al...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 4–7, 2009
Paper Number: SPE-125246-MS
... hole section Snapper Artificial Intelligence Reach Well vibration mud weight drilling campaign limiter performance limiter SPE 125246 Practices Implemented to Achieve Record Performance in Narrow-Margin Drilling in Bass Strait Extended Reach Dale D. Kilroy, SPE, and Fred E. Dupriest, SPE...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, December 3–5, 2008
Paper Number: IPTC-12737-MS
.... The authors are grateful to those who contributed to this paper, including Alan Shive of the ExxonMobil Development Company and Kris Nygaard and Lei Wang of the ExxonMobil Upstream Research Company. References 1. Bailey, J. R., E. A. O. Biediger, V. Gupta, D. Ertas, W. C. Elks, and F. E. Dupriest. Drilling...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191736-MS
... analysis using advanced analytical software. This required a new capability in the company to perform BHA vibration analysis. Solving bit dysfunction is an iterative process of identifying problems and then developing engineering solutions. This is the process described by Dupriest (2011 ). Our goal...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 17–19, 2009
Paper Number: SPE-119625-MS
... SPE/IADC 119625 Maintaining Steerability While Extending Gauge Length to Manage Whirl Fred E. Dupriest, SPE, and Steven F. Sowers, SPE, ExxonMobil Copyright 2009, SPE/IADC Drilling Conference and Exhibition This paper was prepared for presentation at the SPE/IADC Drilling Conference and Exhibition...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, November 21–23, 2005
Paper Number: IPTC-10607-MS
... iptc 10607 upstream oil & gas redesign wob founder stick slip mse adj vibration axial vibration rop limiter rop IPTC 10607 Maximizing ROP With Real-Time Analysis of Digital Data and MSE F.E. Dupriest, SPE, ExxonMobil, and J.W. Witt, SPE, and S.M. Remmert, SPE, RasGas Co. Ltd...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, February 20–22, 2007
Paper Number: SPE-105521-MS
... February 2007. This paper was selected for presentation by an SPE/IADC Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the Society of Petroleum Engineers or International Association...

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