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Fossil Energy Markets
Published in Anco S. Blazev, Global Energy Market Trends, 2021
The main part of the drilling mechanism is the rotating equipment, which consists of a swivel, which is a large handle that holds the weight of the drill string and allows it to rotate. It also makes a pressure-tight seal at the hole. A kelly is four- or six-sided pipe that transfers rotary motion to the turntable and drill string, while the turntable drives the rotating motion, using power from the electric motors. The drill string consists of a drill pipe (connected sections of about 30 feet each) and drill collars consisting of larger-diameter, heavier pipe that fits around the drill pipe and places weight on the drill bit.
Crude Oil
Published in Anco S. Blazev, Energy Security for The 21st Century, 2021
The main part of the drilling mechanism is the rotating equipment, which consists of a swivel, which is a large handle that holds the weight of the drill string and allows it to rotate. It also makes a pressure-tight seal on the hole. A kelly is four- or six-sided pipe that transfers rotary motion to the turntable and drill string, while the turntable drives the rotating motion using power from the electric motors. The drill string consists of a drill pipe (connected sections of about 30 feet) and drill collars consisting of larger-diameter, heavier pipe that fits around the drill pipe and places weight on the drill bit.
Extraterrestrial Drilling and Excavation
Published in Yoseph Bar-Cohen, Kris Zacny, Advances in Extraterrestrial Drilling, 2020
Kris Zacny, Gale Paulsen, Phil Chu, Boleslaw Mellerowicz, Stephen Indyk, Justin Spring, Alex Wang, Grayson Adams, Leslie Alarid, Colin Andrew, Jameil Bailey, Ron Bergman, Dean Bergman, Jocelyn Bergman, Phil Beard, Andrew Bocklund, Natasha Bouey, Ben Bradley, Michael Buchbinder, Kathryn Bywaters, Lee Carlson, Conner Castle, Mark Chapman, Colin Chen, Paul Chow, Evan Cloninger, Patrick Corrigan, Tighe Costa, Paul Creekmore, Kiel Davis, Stella Dearing, Jack Emery, Zak Fitzgerald, Steve Ford, Sam Goldman, Barry Goldstein, Stephen Gorevan, Amelia Grossman, Ashley Hames, Nathan Heidt, Ron Hayes, Matt Heltsley, Jason Herman, Joe Hernandez, Greg Hix, Will Hovik, Robert Huddleston, Kevin Humphrey, Anchal Jain, Nathan Jensen, Marnie Johnson, Helen Jung, Robert Kancans, Cecily Keim, Sarineh Keshish, Michael Killian, Caitlin King, Isabel King, Daniel Kim, Emily Kolenbrander, Sherman Lam, Andrea Lamore, Caleb Lang, Joseph Lee, Carolyn Lee, John Lorbiecki, Kathryn Luczek, Jacob Madden, Jessica Maddin, Tibor Makai, Mike Maksymuk, Zach Mank, Richard Margulieux, Sara Martinez, Yuka Matsuyama, Andrew Maurer, Molly McCormick, Jerry Moreland, Phil Morrison, Erik Mumm, Adoni Netter, Jeff Neumeister, Tim Newbold, Joey Niehay, Phil Ng, Peter Ngo, Huey Nguyen, Tom O’Bannon, Sean O’Brien, Joey Palmowski, Aayush Parekh, Andrew Peekema, Fredrik Rehnmark, Hunter Rideout, Albert Ridilla, Alexandra Rzepiejewska, Dara Sabahi, Yoni Saltzman, Luke Sanasarian, Vishnu Sanigepalli, Emily Seto, Jeff Shasho, Sase Singh, David Smyth, Nancy Sohm, Jesus Sosa, Joey Sparta, Leo Stolov, Marta Stone, Andrew Tallaksen, Miranda Tanouye, Lisa Thomas, Thomas Thomas, Luke Thompson, Mary Tirrell, Nick Traeden, Ethan Tram, Sarah Tye, Crystal Ulloa, Dylan Van-Dyne, Robert Van Ness, Vincent Vendiola, Brian Vogel, Lillian Ware, Bobby Wei, Hunter Williams, Jack Wilson, Brian Yaggi, Bernice Yen, Sean Yoon, Ben Younes, David Yu, Michael Yu, Mike Zasadzien, Raymond Zheng, Yoseph Bar-Cohen, Mircea Badescu, Xiaoqi Bao, Tom Cwik, Jean-Pierre Fleurial, Jeffery Hall, Kevin Hand, Ben Hockman, Samuel M. Howell, Troy Lee Hudson, Shannon Jackson, Hyeong Jae Lee, Michael Malaska, Brandon Metz, Scott Moreland, Avi Okon, Tyler Okamoto, Dario Riccobono, Kris Sherrill, Stewart Sherrit, Miles Smith, Jurgen Mueller, Wayne Zimmerman, Michael Amato, Melissa Trainer, Don Wegel, Andrej Grubisic, Walter F. Smith, Ralph Lorenz, Elizabeth Turtle, Hirotaka Sawada, Hiroki Kato, Yasutaka Satou, Takashi Kubota, Masaki Fujimoto, Pietro Baglioni, Stephen Durrant, Richard Fisackerly, Roland Trautner, Marek Banaszkiewicz, Karol Seweryn, Akihiro Fujiwara, Taro Nakamura, Matthias Grott, Jerzy Grygorczuk, Bartosz Kędziora, Łukasz Wiśniewski, Tomasz Kuciński, Gordon Wasilewski, Seiichi Nagihara, Rohit Bhartia, Hiroyuki Kawamoto, Julius Rix, Robert Mulvaney, Andrea Rusconi, Christian Panza, Marco Peruzzotti, Pablo Sobron, Ryan Timoney, Kevin Worrall, Patrick Harkness, Naohiro Uyama, Hiroshi Kanamori, Shigeru Aoki, Dale Winebrenner, Yasuyuki Yamada, Tilman Spohn, Christian Krause, Torben Wippermann, Roy Lichtenheldt
Conventional drill systems deployed in the oil and gas industries screw drill pipes together to form a long drill string. To get deeper, more drill pipes are added. This is a very robust approach and solves many problems related to deep drilling. These drills require high power drives, weigh a lot, and occupy significant space. These are not major issues on Earth; however, they are show-stoppers in extra-planetary settings (Dachwald et al. 2020).
Disturbance estimator and smith predictor-based active rejection of stick–slip vibrations in drill-string systems
Published in International Journal of Systems Science, 2020
Min Wu, Jun Cheng, Chengda Lu, Luefeng Chen, Xin Chen, Weihua Cao, Xuzhi Lai
Drilling is a basic industrial process for resource exploitation and geological survey. As a core system, a drill-string connects mechanical components from the surface down to downhole and transmits driving torque to the drill bit, so as to break rock and penetrate. During practical production, due to the influence of factors like bit–rock interaction, multi-point contact and vibration of top drive, the drill-string easily presents a complex dynamic, including lateral, torsional, axial and even coupled vibrations (Ghasemloonia et al., 2015). Stick–slip vibrations, as a form of torsional vibrations, occur frequently in drilling process. They have two phases: stick and slip, which appear alternately and periodically, presenting a limit cycle behaviour. The existence of stick–slip vibrations greatly reduces drilling efficiency, seriously damages mechanical units, and even leads to drilling accidents (Khulief et al., 2007; Sarker et al., 2017). Therefore, developing effective methods for mitigation of stick–slip vibrations has attracted certain attention in the literature.