... are scaled by complex mode shapes with a comparably small wavelength. This deflection of the BHA leads to high tangential acceleration and dynamic torsional torque loads. The self-excitation mechanism of HFTO can be modeled as a drilling torque that decreases when the bit rotary speed increases...

... wellbore tortuosity torque increment bha sensor efficiency TECHNICAL PAPERS | Extended-Reach and Complex Wells Multifunctional-Team Approach Achieves Extended-Reach Record Offshore Abu Dhabi The complete paper describes the engineering design and operational practices that supported the setting...

... design to allow reaching TD within optimal rig capacities - Bit selection to reduce the number of - runs needed to two (three maximum if a contingency were to be considered) - Total dissolved solids (TDS) torque-limit management (30,000 lbf-ft at 180 rev/min) - A rig-pumping pressure limit of 4,600 psi...

... caused dropping wellhead pressures. 1 8 2022 1 8 2022 1 8 2022 1 8 2022 Copyright 2022, Offshore Technology Conference subsea processing all-electric boosting-control system simplify lp lt eactuator upstream oil & gas eactuator platform torque interface...

... was struggling to provide not only the required rotational speed but also to deliver consistent necessary torque. The complete paper analyzes how severe rig limitations were overcome through an optimization plan in which the optimal BHA was designed, and drilling practices were customized, for safe...

... tools as part of the bottomhole assembly (BHA) downhole close to the bit provides actual weight-on-bit (WOB) and torque-on-bit (TOB) applied to the drilling bit to destroy the rock and, thus, results in more-representative MSE measurements to optimize drilling parameters and ROP in ERD wells. 1 5...

... technique for AA qualification, all seven AAs were tested in a high-pressure visual sapphire autoclave under the conditions outlined in the methodology section of the complete paper. In this work, the authors have used a condensate from a field in northwest Australia. An appreciable rise in relative torque...

... equation. The complete paper presents the derivation of a set of equations that use the same basic assumptions as the original single-shouldered connection torque equations, in the same way as do the API equations, to advance understanding of the torsion and tension capacities for double-shouldered...

... and hole-cleaning limitations. The salt section would be very drillable, but mechanical specific energy (MSE) levels would be approximately 40 ksi. PDC bits would be very aggressive, so torque would be highly sensitive to weight on bit (WOB). Peak rate of penetration (ROP) in both salt and sediments would...

... Artificial Intelligence mikkel leite arnø control system rig competition bit selection fred florence Field Engineer Upstream Oil & Gas Engineer torque knoop ntnu team 1 1 2019 1 1 2019 1 1 2019 1 1 2019 37JPT JANUARY 2019 T here is not a big difference between...

... transfer, vibrations, equipment fatigue and failure, torque and drag, buckling, quality of cement bond, completion or casing running, quality of logging, artificial lift, wellbore placement, and production. If the industry wants to drill 15,000-ft-and-greater lateral sections in the unconventional market...

... guns for opening two intervals, and milling out the two CBPs without taking returns to surface. For the first time, a tension, compression, and torque (TCT) subassembly was used to improve the milling operation. Introduction CT telemetry (CTT) systems have proved to be effective in enhancing operations...

... and proper torque management have been shown to be key factors for flawless execution. Proposed Approach Considering the typical well setup in off-shore Brazil, Well A-27 had a considerable total length. The planned length of the well was 8400-m measured depth (MD), with a possible extension to 8740-m MD...

..., and torque-and-drag reduction still exist. ECD is linked to hole cleaning and is often a limiting factor. Long-reach horizontal wells can also be limited by the torque and drag of the drillstring. The dual-drillstring configuration has specifically been developed to provide solutions to these challenges...

... is presented. The brazing process, or temperature/torque/time (TTT) process, is performed with regular casing connections, a filler material deposited by flame spray, and a flux. Two processes were developed, one for expandable-grade material (VM50) and one for quenched-and-tempered-grade material...

... will converge with the data-handling and data-transmission systems. Common thoughts for drilling engineers—when it comes to planning and drilling—often focus on torque and drag, which concern tubulars. Even though we have advanced in the prediction of torque, drag, and hookload estimation, challenges remain...

...Adam Wilson This article, written by Special Publications Editor Adam Wilson, contains highlights of paper SPE 183415, “Development of Next-Generation High-Torque Oil-Country-Tubular-Goods Premium Connection for Extended-Reach Wells,” by Jerry Buster and Justin Perkins, VAM, and Leonardo Azeredo...

... of rig-activity codes. A combination of factors generates or influences drillstring vibration, including the energy inputs of weight on bit and torque; bit type; BHA design and stabilization; lithology type; geological structures; bit/lithology interaction; borehole and BHA size; hole trajectory; back...

..., NPT, and tools lost in the hole. Preventing adverse dynamics requires a strong understanding of the fundamentals, particularly in addressing torsional dynamics: time-based variations in downhole rotational speed and torque. A common misconception is that torsional dynamics is limited to stick/slip...

... hydraulic load on the borehole. The system consists of a retrievable and changeable inner string/pilot BHA and an outer liner string. Inner and outer strings are connected by a running tool, which transmits required torque, locat- ed at the top of the liner. The liner ro- tates slowly at approximately 30...