Results 11 to 20 of about 1,054 (134)

A Novel Artificial Neural Network‐Based Correlation for Evaluating the Rate of Penetration in a Natural Gas Bearing Sandstone Formation: A Case Study in a Middle East Oil Field

Journal of Sensors, Volume 2022, Issue 1, 2022., 2022
This study presented an empirical correlation to estimate the drilling rate of penetration (ROP) while drilling into a sandstone formation. The equation developed in this study was based on the artificial neural networks (ANN) which was learned to assess the ROP from the drilling mechanical parameters.
Ahmad Al-AbdulJabbar, Ahmed Abdulhamid Mahmoud, Salaheldin Elkatatny, Mahmoud Abughaban, Carlos Michel   +4 more
wiley   +1 more source

Analysis of the Effect of Whirl on Drillstring Fatigue

Shock and Vibration, Volume 2021, Issue 1, 2021., 2021
There are many kinds of vibration forms of drillstring in petroleum drilling. Whirl is one of the main vibration modes when drilling tools are drilling, and it is also the main reason of fatigue failure of the drillstring. In this paper, the causes of drillstring whirl are analyzed.
Chong Wang, Xufeng Li, Yafeng Li, Wenhao Xu, Wuyi Liao, Roberto Nascimbene   +5 more
wiley   +1 more source

Experimental Study on Axial Impact Mitigating Stick‐Slip Vibration with a PDC Bit

Shock and Vibration, Volume 2021, Issue 1, 2021., 2021
Stick‐slip vibration reduces the drilling rate of penetration, causes early wear of bits, and threatens the safety of downhole tools. Therefore, it is necessary to study suppression methods of stick‐slip vibration to achieve efficient and safe drilling.
Yong Wang, Hongjian Ni, Yiliu (Paul) Tu, Ruihe Wang, Xueying Wang, Heng Zhang, Jiaxue Lyu, Hongqiao Xie, Wenjun Huang   +8 more
wiley   +1 more source

Use of the energy of parametric oscillations to improve drilling indices [PDF]

, 2011
Purpose. Increase of the efficiency of using energy of parametric oscillations within the assembly of drilling string bottom by means of solving nonlinear-parametric equations of a “bit – drive motor – drilled-out rock” system to improve drilling indices.
Bakenov, Chernin, Depouhon, Eren, Ghasemloonia, Ghasemloonia, Gibbs, Heisig, Khajiyeva, Parsian, Patil, Saldivar   +11 more
core   +2 more sources

A Study of The Design Method and Similitude for A Small-Scale Test Drilling Rig (Part 1): An Application of The Geometrically Distorted Scaled Modeling Method

Journal of Earth Energy Engineering, 2021
Drillstrings often vibrate severely and tend to twist off during hard rock drilling. Therefore, dynamic testing is crucial in the design of drilling systems. Designers tend to employ the most powerful analytical tools, using the most elaborate electronic
Mejbahul Sarker
doaj   +1 more source

Investigation into the effect of friction decay factor on the modelling and attenuation of stick-slip vibrations of oilwell drilling systems

Petroleum, 2022
The self-excited stick-slip oscillations of oilwell drillstrings are attributed to the nonlinear interaction between the drill-bit and the rock formation.
Mohammed Y.A. Alkaragoolee, David Bryant
doaj   +1 more source

Observer-Based H∞ Controller Design for High Frequency Stick-Slip Vibrations Mitigation in Drill-String of Rotary Drilling Systems

Vibration, 2022
The drilling process is among the most crucial steps in exploration and production activities in the petroleum industry. It consists of using mechanical mechanisms to crush rocks by the drill bit to pass through the different geological layers. The drill-
Rami Riane, Mohamed Zinelabidine Doghmane, Madjid Kidouche, Sofiane Djezzar   +3 more
doaj   +1 more source

Comparing Advanced Control Strategies to Eliminate Stick-Slip Oscillations in Drillstrings

IEEE Access, 2022
In this paper, we present three methods to achieve reliable drillbit angular velocity control for deep drilling operations. We consider a multi-sectional drilling system with the bit off-bottom, which represents the system at the start-up of a drilling ...
Jean Auriol, Islam Boussaada, Roman J. Shor, Hugues Mounier, Silviu-Iulian Niculescu   +4 more
doaj   +1 more source

Vibration analysis of simultaneous drilling and reaming BHA

Journal of Petroleum Exploration and Production Technology, 2020
The drillstring used in the oil and gas exploration is a complex structure due to the different forces acting on it. One of the primary sources of drillstring vibrations is the cutting forces caused by the drill bit contact with the rock formation.
Mohammed F. Al Dushaishi, Daniel S. Stutts   +1 more
doaj   +1 more source

Nonlinear Dynamics in Drilling Engineering

, 2021
Shock and Vibration, Volume 2021, Issue 1, 2021.
Qilong Xue, Wenjun Huang, Henry Leung, Zhiqiao Wang   +3 more
wiley   +1 more source