Results 221 to 230 of about 41,718 (241)

Use of MWD for Turbodrill Performance Optimization as a Means To Improve ROP

SPE Drilling Engineering, 1986
Summary Field tests were carried out to monitor the performance of turbodrills driving polycrystalline-diamond-compact (PDC) bits. Separate tests with miid-pulse measurement-while-drilling (MWD) tools involved measurement of the rotational speed of the bit and downhole torque.
H. J. de Bruijn, A. J. Kemp, J. C. M. van Dongen   +2 more
openaire   +1 more source

Drilling with Induced Vibrations Improves ROP and Mitigates Stick/Slip in Vertical and Directional Wells

IADC/SPE Drilling Conference and Exhibition, 2014
Abstract For years drillers have been taught to mitigate all vibrations in the drillstring while drilling to maximize Rate of Penetration (ROP), limit bit damage, and extend bit life. While limiting lateral vibrations and stick/slip are proven ways to improve performance and maintain directional control, in recent years it has been ...
J. R. Clausen, A. E. Schen, I. Forster, J. Prill, R. Gee   +4 more
openaire   +1 more source

PREOPERATIVE ANATOMICAL FEATURES ASSOCIATED WITH IMPROVED SURGICAL OUTCOMES FOR STAGE 5 ROP.

2021
Purpose: To describe preoperative anatomical features of Stage 5 retinopathy of prematurity with results of surgery and patient-related and surgery-related factors affecting postoperative success. Methods: Forty eyes of 33 infants who underwent vitrectomy with lensectomy or lens-sparing vitrectomy for Stage 5 retinopathy of prematurity were enrolled ...
Ozdek, Sengul, Ozsaygili, Cemal, Yeter, Duygu Yalınbaş, Ozmen, MEHMET CÜNEYT, Atalay, HATİCE TUBA   +4 more
openaire   +1 more source

Rolling Depth-Of-Cut Control Improves Tool-Face Control and Overall ROP During Steerable Motor Applications

IADC/SPE International Drilling Conference and Exhibition, 2020
Abstract Rolling depth-of-cut control (RDOCC) on fixed cutter drill bits can improve rate of penetration (ROP) and reduce vibrations during steerable motor applications by reducing torque fluctuations caused by sliding friction. Torque fluctuations are reduced by absorbing weight-on-bit (WOB) variations using a rolling bearing element ...
Stephen Hawkins, Van Brackin, Mohammad Taleb Ameri   +2 more
openaire   +1 more source

Advanced Downhole Torsional Oscillation Control Tool Improved Dynamics and Field Average ROP

International Petroleum Technology Conference
Abstract The introduction of a novel torsional oscillation control technology, characterized by its high amplitude, extended attenuation length, and mode-coupled axial excitation, has been instrumental in enhancing drilling dynamics and augmenting the on-bottom drilling rate of penetration (ROP).
Ahmed Meshaal Al Rubaya, Alexey Alexeyenko, Ashraf Khateeb   +2 more
openaire   +1 more source

IMPROVEMENT OF POINT LEPREAU GENERATING STATION ROP DETECTOR CHARACTERISTICS BY ADJUSTING GAINS IN COMPENSATION AMPLIFIERS

AECL Nuclear Review, 2015
Canadian Pressurized Heavy Water Reactors are protected against reactor overpower by 2 independent shutdown systems: Shut Down System 1 and 2. At Point Lepreau Generating Station, these shutdown systems can be actuated by signals from Platinum-clad Inconel In-Core Flux Detectors measuring the neutron flux.
V. Anghel, M.-J. Basque, D. Comeau, B. Sur, D. Taylor   +4 more
openaire   +1 more source

Drilling data from an enhanced geothermal project and its pre-processing for ROP forecasting improvement

Geothermics, 2018
Abstract Drilling parameters are analyzed here to improve forecasting of the rate of penetration (ROP) in enhanced geothermal systems (EGSs). Data recorded during drilling a 4.2-km-deep well at a pilot EGS project in South Korea were analyzed. The greatly fluctuating ROP values were smoothed using a fast Fourier transform filter.
Melvin B. Diaz, Kwang Yeom Kim, Tae-Ho Kang, Hyu-Soung Shin   +3 more
openaire   +1 more source

Research on the Prediction Method of ROP Based on Improved BP Neural Network

58th U.S. Rock Mechanics/Geomechanics Symposium
ABSTRACT: Accurate prediction of ROP is the premise and key to increase drilling speed. Artificial intelligence provides technical means for accurate ROP prediction. In this paper, the influence of borehole trajectory and drilling parameters on ROP is considered, and the prediction model of ROP is established by ...
Wengzhe Li, Lianbin Xia, Yueyao Luo, Yuechun Wang, Beiqiao Meng, Tianyi Tan, Lifan Luo   +6 more
openaire   +1 more source

A Proposal to Improve the SAE Standard and OECD Code 4 Standard Code for Testing ROPS

Transactions of the ASABE, 2011
The great increase in maximum laden mass and recent fatal accidents involving tractors having ROPS tested in accordance with a specific standard have led to the need to evaluate the validity of the current standards for testing ROPS. A ROPS able to meet the requirements of the current tests, but without a rollover safety margin, has been designed. This
null J. I. Arana, null J. R. Alfaro, null S. Arazuri, null J. L. Ponce de León, null C. Jarén   +4 more
openaire   +1 more source

Dynamic BHA Modeling of Hole Enlargement While Drilling Leads to ROP Improvement in Gulf of Mexico

All Days, 2010
Abstract Salt is typically underreamed in the deepwater Gulf of Mexico wells to manage equivalent circulating density (ECD) and creep. Rapidly drilling the long salt sections is an opportunity to significantly reduce the overall drilling time and cost of deepwater wells.
Myles Barrett, Molly T. Compton, Mukul Agnihotri, Fernando Verano, Simon Mitchell, David Lawrence Fitzmorris   +5 more
openaire   +1 more source