Results 231 to 240 of about 56,749 (281)

Dynamic Model for Stiff-String Torque and Drag

SPE Drilling & Completion, 2013
SummaryA dynamic stiff-string torque-and-drag (T&D) model is presented that assumes steady-state motion of the drillstring as its basis for calculations. Results are compared with previously published T&D models that are based on static equilibrium.
Vadim Tikhonov, Khaydar Valiullin, Albert Nurgaleev, Lev Ring, Raju Gandikota, Pavel Chaguine, Curtis Cheatham   +6 more
  +5 more sources

Advanced Torque and Drag Considerations in Extended-Reach Wells

IADC/SPE Drilling Conference, 1996
Abstract Excessive torque and drag can be critical limitations in Extended-Reach Drilling (ERD). This paper details issues related to torque and drag prediction, monitoring, and management in ERD wells. Results are presented from sensitivity analyses of extreme ERD trajectories such as 7 to 8 km departures at 1600 m TVD.
M. L. Payne, Fereidoun Abbassian
  +4 more sources

Dynamic Torque and Drag Model

SPE Annual Technical Conference and Exhibition, 2020
Abstract It is generally acceptable to use soft string model for simple wells and stiff string for high dogleg wells. But these models fail to reveal the complex mechanical behaviors of tubular string in tripping in, tripping out, and sliding drilling operations with time as some segments of tubular string may move upward and downward ...
Robello Samuel, Wenjun Huang
openaire   +1 more source

Dynamic Torque and Drag Model Coupled With Transient Hydraulic

Volume 9: Offshore Geotechnics; Petroleum Technology, 2023
Abstract A drill-string is an extremely slender mechanical structure and consequently it can oscillate very easily. Drill-string vibrations during drilling operations is the source of many drilling dysfunctions such as decreased drilling performance, damage to downhole equipment, or formation instabilities.
Eric Cayeux, Espen Jettestuen, Adrian Ambrus   +2 more
openaire   +1 more source

Torque and Drag Modeling Advanced Techniques and Troubleshooting

SPE Annual Technical Conference and Exhibition, 2012
Abstract Extreme torque and drag (T&D), especially when unplanned, is a primary limiter to the reach of horizontal and extended-reach wells. Many engineers use T&D software models without a thorough understanding of how the input affects the calculations in the program.
John McCormick, Gefei Liu
openaire   +1 more source

Torque and drag field applications in horizontal wells

International Journal of Oil, Gas and Coal Technology, 2017
The industry of drilling for oil, gas geothermal, and storage purposes necessitates construction of challenging wells in recent applications. Challenging wells are required to be designed prior to the drilling to selection of the equipment to be utilised while drilling.
Tuna Eren, Burak Kagan Caglayan, Mustafa Verşan Kök   +2 more
openaire   +1 more source

Torque and Drag Modeling for Horizontal Openhole Completions

SPE Annual Technical Conference and Exhibition, 2005
Proposal Since horizontal openhole sections are now being drilled to lengths that exceed 20,000 ft, placement of the completion string (CS) to planned total depth (TD) may not be possible under a proposed drilling plan. During the early years of horizontal-well construction, the hanging weight of the completion string was usually ...
R. Rezvani, B. Techentien
openaire   +1 more source

Designing Well Paths to Reduce Drag and Torque

SPE Drilling Engineering, 1987
Summary A deviated well with an undersection trajectory (i.e., a trajectory lying below the conventional tangent section and constantly building to target) can exhibit lower drag and torque than a conventional well geometry in certain circumstances. The influence of well geometry on drag and torque is discussed, making use of the results
M. C. Sheppard, C. Wick, T. Burgess
openaire   +1 more source

Torque and Drag in Directional Wells-Prediction and Measurement

Journal of Petroleum Technology, 1984
Summary A computer model has been developed to predict drillstring torque and drag, and a versatile rotary torque meter has been built to use in calibrating the model. The principle of the predictive model is that torque and drag forces in a directional wellbore are primarily caused by sliding friction.
C.A. Johancsik, D.B. Friesen, Rapier Dawson   +2 more
openaire   +1 more source

An Innovative Workflow for Real-Time Torque and Drag Monitoring

SPE/IADC International Drilling Conference and Exhibition, 2023
Abstract Abnormal torque and drag (T & D), which commonly includes overpull, underpull, and high-torque load, are indications of excess frictional effects between the drillstring and the wellbore walls. Numerous conditions can cause these effects, including tight hole, differential sticking, poor hole cleaning, key seats, etc ...
Kewen Sun, Chao Mu, Tao Yu, Graeme Paterson   +3 more
openaire   +1 more source