Results 1 to 10 of about 532 (178)

A Review of Video-Based Monitoring Systems for Geohazard Early Warning. [PDF]

Sensors (Basel)
Dong H, Sheng S, Xu C.
europepmc   +1 more source

Development and Validation of AAV Capsids Separation on Specimen Columns for Reproducibility Evaluation of Large-Scale Chromatographic Monoliths. [PDF]

J Sep Sci
Miklavčič R, Simčič T, Rotar S, Komel P, Žigon R, Pavlovič D, Bergoč I, Ipavec D, Simčič Zuljan A, Žnidaršič A, Kukanja D, Vidič J, Štrancar A, Černigoj U.   +13 more
europepmc   +1 more source

Prediction of jumbo drill penetration rate in underground mines using various machine learning approaches and traditional models. [PDF]

Sci Rep
Heydari S, Hoseinie SH, Bagherpour R.
europepmc   +1 more source

A novel signal processing algorithm for measurement while drilling (MWD) system

2021 40th Chinese Control Conference (CCC), 2021
Measurement while drilling (MWD) is a widely used signal transmission technology in the drilling process. At present, the domestic pulse identification method is relatively simple, using the basic threshold method to identify, only set the threshold which will leading a number of missing detection mud pulse in the complex working conditions.
ShiLong Cheng, Yule Hu
openaire   +3 more sources

The Use Of The Measurement While Drilling (Mwd) Data In Reservoir Identification And Formation Evaluation

Global Journal of Pure and Applied Sciences, 2002
The use of the Measurement While Drilling (MWD) tool in formation evaluation has proved invaluable in terms of operational cost, time and reliability of data. The tool suffers less from invasion effect when compared to conventional wireline tools and so can be deployed in hostile borehole environments.
Egeh, E.U., Okereke, C.S., Olagundoye, O.O.   +2 more
openaire   +3 more sources

Improving the application depth of electromagnetic measurement while drilling (EM-MWD) systems by receiving signals from adjacent wells

Journal of Applied Geophysics, 2021
Abstract EM-MWD systems transmit downhole data via an information channel composed of drill string and formation, and the formation has a strong attenuation effect on the signal. Signal attenuation in EM wave transmission in the formation limits the application well depth.
Chunhua Lu, Tao Zhang, Huibin Zhao
openaire   +3 more sources

Formation lithology predictions based on measurement while drilling (MWD) using gradient boosting algorithms

Geoenergy Science and Engineering, 2023
Hyungjoo Lee, Hunjoo P. Lee
openaire   +3 more sources

Measurement-While-Drilling MWD Error Model Validation – Does the Model Reflect Reality?

SPE/IADC International Drilling Conference and Exhibition, 2021
Abstract It has been well documented that magnetic models and Measurement-while-Drilling (MWD) directional sensors are not free from error. It is for this reason that directional surveys are accompanied by an error model that is used to generate an ellipse of uncertainty (EOU).
David Gutierrez, Chad Hanak
openaire   +1 more source

Applications of Measurements While Drilling (MWD): Development of the East Breaks Field, Offshore Texas

Proceedings of SPE/IADC Drilling Conference, 1985
ABSTRACT In October of 1982, after drilling the seventh well on the Cerveza platform in offshore Texas waters, nearly four days were spent attempting to record wireline logs. Getting wireline logs to total depth was typical of problems on previous wells in this area.
F.W. Jr., C.A. Martin
openaire   +2 more sources