Widening Drilling Operation: Performance Analysis on the Application of Fixed Cutter Drill Bits in Hard Rock Formation

2021 ◽  
Author(s):  
Jeronimo de Moura Junior ◽  
Yingjian Xiao ◽  
Daiyan Ahmed ◽  
Stephen Butt
Keyword(s):  
Performance Analysis ◽  
Hard Rock ◽  
Operation Performance ◽  
Drilling Operation ◽  
Rock Formation ◽  
Drill Bits

Widening Drilling Operation: Performance Analysis on the Application of Fixed Cutter Drill Bits in Hard Rock Formation

2020 ◽  
Author(s):  
Jeronimo De Moura ◽  
Yingjian Xiao ◽  
Daiyah Ahmed ◽  
James Yang ◽  
Stephen D. Butt
Keyword(s):  
Hard Rock ◽  
Empirical Models ◽  
Operation Performance ◽  
Rock Interaction ◽  
Pilot Hole ◽  
Drilling Operation ◽  
Rock Formation ◽  
Drilling Performance ◽  
Weight On Bit ◽  
Drilling Operations

Abstract This study is an evaluation of drilling mechanisms for widening drilling operations, which are also called hole opening or enlarge drilling operations, in hard rock formations during drilling operation with fixed cutter bits. This paper focuses on correlating drilling performance, or Rate of Penetration (ROP), with drilling parameters such as Weight on Bit (WOB), rotary speed, Torque on Bit (TOB) and bit type. Laboratory Drill-Off Tests (DOT) were conducted using a drilling simulator. Natural granite specimens were penetrated using different types of fixed cutter bits with different diameters. Various magnitudes of WOB were applied during these drilling experiments in order to study drilling performance in this type of formation. A well-organized drilling experimental plan was proposed to cover both procedures of pilot holes and widening drilling operations. Comparison were made between performance conditions obtained during the drilling operations of pilot holes and similar conditions during widening drilling operations. Furthermore, bit-rock interaction was studied by comparing experimental data with that obtained from empirical models. The focus of this paper was to analyze the ROP during each stage of the widening drilling operations of a pilot hole and its correlation with other parameters. The applicability of current empirical models and their limitations in widening drilling operations in hard rock formation was analyzed. In this way, this drilling model is applied in widening drilling operations of hard rock formation with fixed cutter bits.

Operation performance analysis of a liquid metal droplet radiator for space nuclear reactor

2021 ◽  
Vol 158 ◽  
pp. 108301
Author(s):  
Linyi Yang ◽  
Chenglong Wang ◽  
Hao Qin ◽  
Dalin Zhang ◽  
Wenxi Tian ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Liquid Metal ◽  
Nuclear Reactor ◽  
Metal Droplet ◽  
Operation Performance ◽  
Liquid Metal Droplet

scholarly journals Airflow Management in Solid Oxide Electrolyzer (SOE) Operation: Performance Analysis

2017 ◽  
Vol 1 (2) ◽  
pp. 13 ◽  
Author(s):  
Linda Barelli ◽  
Gianni Bidini ◽  
Giovanni Cinti
Keyword(s):  
Performance Analysis ◽  
Solid Oxide ◽  
Operation Performance

scholarly journals Parametric Performance Analysis and Energy Model Calibration Workflow Integration—A Scalable Approach for Buildings

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 621 ◽  
Author(s):  
Massimiliano Manfren ◽  
Benedetto Nastasi
Keyword(s):  
Performance Analysis ◽  
Performance Management ◽  
Model Calibration ◽  
High Efficiency ◽  
A Priori ◽  
Energy Performance ◽  
Design Phase ◽  
Operation Performance ◽  
Simulation Techniques ◽  
The Impact

High efficiency paradigms and rigorous normative standards for new and existing buildings are fundamental components of sustainability and energy transitions strategies today. However, optimistic assumptions and simplifications are often considered in the design phase and, even when detailed simulation tools are used, the validation of simulation results remains an issue. Further, empirical evidences indicate that the gap between predicted and measured performance can be quite large owing to different types of errors made in the building life cycle phases. Consequently, the discrepancy between a priori performance assessment and a posteriori measured performance can hinder the development and diffusion of energy efficiency practices, especially considering the investment risk. The approach proposed in the research is rooted on the integration of parametric simulation techniques, adopted in the design phase, and inverse modelling techniques applied in Measurement and Verification (M&V) practice, i.e., model calibration, in the operation phase. The research focuses on the analysis of these technical aspects for a Passive House case study, showing an efficient and transparent way to link design and operation performance analysis, reducing effort in modelling and monitoring. The approach can be used to detect and highlight the impact of critical assumptions in the design phase as well as to guarantee the robustness of energy performance management in the operational phase, providing parametric performance boundaries to ease monitoring process and identification of insights in a simple, robust and scalable way.

Combined Percussive-Rotary Drilling to Increase Rate of Penetration and Life of Drill Bit in Drilling Hard Rock Formation

2017 ◽  
Vol 53 (2) ◽  
pp. 254-262 ◽  
Author(s):  
Chunqing Zha ◽  
Gonghui Liu ◽  
Jun Li ◽  
Yumei Li ◽  
Yan Xi ◽  
...  
Keyword(s):  
Hard Rock ◽  
Drill Bit ◽  
Rotary Drilling ◽  
Rate Of Penetration ◽  
Rock Formation ◽  
Increase Rate

Automatic Performance Analysis and Estimation of Risk Level Embedded in Drilling Operation Plans

2016 ◽  
Author(s):  
Eric Cayeux ◽  
Benoît Daireaux ◽  
Mohsen Karimi Balov ◽  
Stein Haavardstein ◽  
Leif Magne Stokland ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Risk Level ◽  
Drilling Operation ◽  
Automatic Performance Analysis ◽  
Estimation Of Risk
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