Results 221 to 230 of about 41,805 (255)

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

A Novel Axial-Torsional Isofrequency Impactor Improved Field Average ROP for Tight Shale Drilling

International Petroleum Technology Conference
Abstract Accessing petroleum and natural gas from deep unconventional reservoirs plays an important role in improving worldwide energy supply. However, directional well drilling into the unconventional reservoirs, especially tight shale, is accompanied by the higher friction and stick-slip vibration at the bit, which limits the rate of ...
Zhaowei Sun, Zongjie Mu, Wujun Xi, Lei Wang, Jiarui Wu, Xiaoguang Wu, Zhongwei Huang   +6 more
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Cationic drilling fluid improves ROP in reactive formations

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1992
openaire   +1 more source

Mud Hammer Drilling in Hard Formations: Bit design Improvements Lead to ROP Increase

IADC/SPE Drilling Conference and Exhibition, 2018
Laurent Gerbaud, Raphaël Souchal, Marion Tarek   +2 more
openaire   +1 more source

Soft formation insert bits improve ROP and lower costs per foot

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1993
openaire   +1 more source

Improved Screening for Retinopathy of Prematurity (ROP) — Demonstration of a Telemedical Solution

2006
Heike Elflein, Birgit Lorenz
openaire   +1 more source