Results 91 to 100 of about 1,256 (185)

Drill-String Vibration Suppression Using Hybrid Magnetorheological Elastomer-Fluid Absorbers

Actuators
Rotary drilling systems with PDC bits, commonly used for drilling deep wells in the production and exploration of oil and natural gas, frequently encounter severe vibrations.
Jasem M. Kamel, Asan G. A. Muthalif, Abdulazim H. Falah   +2 more
doaj   +1 more source

Fuzzy Adaptive PID Controller for Stick-Slip Vibration of Drillstring

Shiyou jixie
The destructive stick-slip vibration of the drillstring in deep drilling will cause serious obstacles to well drilling and production， and has always been a challenge without appropriate solution due to its strong nonlinearity and uncertainties.
Luo Jie Liu Jun Zhou Xinzhong Li Qiang Zhang Yi
doaj  

Mixed Micromax and hematite-based fly ash geopolymer for heavy-weight well cementing. [PDF]

Sci Rep, 2023
Abdelaal A, Elkatatny S.
europepmc   +1 more source

Real-Time Prediction of Rate of Penetration in S-Shape Well Profile Using Artificial Intelligence Models. [PDF]

Sensors (Basel), 2020
Elkatatny S.
europepmc   +1 more source

The Atacama Rover Astrobiology Drilling Studies (ARADS) Project. [PDF]

Astrobiology, 2023
Glass B, Bergman D, Parro V, Kobayashi L, Stoker C, Quinn R, Davila A, Willis P, Brinckerhoff W, Warren-Rhodes K, Wilhelm MB, Caceres L, DiRuggiero J, Zacny K, Moreno-Paz M, Dave A, Seitz S, Grubisic A, Castillo M, Bonaccorsi R.   +19 more
europepmc   +1 more source

Physical layer design for acoustic downhole drillstring telemetry

, 2012
Transmission of down-hole measurements to the surface while the oil well is being drilled (logging while drilling-LWD-telemetry) is the key to the efficient and successful recovery of hydrocarbon resources.
Tiong, Yew.
core  

Stabilization of stick-slip oscillations Integrating fluid injection in oilwell drillstring system

, 2016
International audienceTo address security issues in oilwell drillstring system, the drilling operation handling which is in generally not autonomous but ensured by an operator may be drill bit destructive or fatal for the machine.
Lotfi Beji, Samir Toumi, Azgal Abichou, Rhouma Mlayeh, Toumi, samir, Abichou, Azgal, Beji, Lotfi, Mlayeh, Rhouma   +7 more
core   +1 more source

Robust Control of Drillstring Vibrations: Modeling, Estimation, and Real-Time Considerations

Applied Sciences
This paper presents a comprehensive and hybrid control framework for the real-time regulation of drillstring systems that are subject to complex nonlinear dynamics, including torsional stick–slip oscillations, coupled axial vibrations, and intricate bit ...
Dan Sui, Jingkai Chen
doaj   +1 more source

Applications of Different Classification Machine Learning Techniques to Predict Formation Tops and Lithology While Drilling. [PDF]

ACS Omega, 2023
Ibrahim AF, Ahmed A, Elkatatny S.
europepmc   +1 more source

Effect of tripping velocity profiles on wellbore pressures and dynamic loading of drillstring [PDF]

, 2013
Tripping events are expensive and time-consuming. Thus, minimizing tripping time through choosing optimized tripping velocity becomes urgent. Surge or swab pressures in the wellbore and dynamic loading of drillstring will be generated during tripping ...
Miska, S., Takach, N., Yu, M., Wang, Z.
core