The Experts below are selected from a list of 1182159 Experts worldwide ranked by ideXlab platform
Homer Robertson - One of the best experts on this subject based on the ideXlab platform.
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Smaller Footprint Drilling System for Deep and Hard Rock Environments; Feasibility of Ultra-High-Speed Diamond Drilling
2006Co-Authors: Arnis Judzis, Alan Black, Homer RobertsonAbstract:The two phase program addresses long-term developments in deep well and hard rock drilling. TerraTek believes that significant improvements in drilling deep hard rock will be obtained by applying ultra-high rotational speeds (greater than 10,000 rpm). The work includes a feasibility of Concept Research effort aimed at development that will ultimately result in the ability to reliably drill ''faster and deeper'' possibly with smaller, more mobile rigs. The principle focus is on demonstration testing of diamond bits rotating at speeds in excess of 10,000 rpm to achieve high rate of penetration (ROP) rock cutting with substantially lower inputs of energy and loads. The significance of the ultra-high rotary speed drilling system is the ability to drill into rock at very low weights on bit and possibly lower energy levels. The drilling and coring industry today does not practice this technology. The highest rotary speed systems in oil field and mining drilling and coring today run less than 10,000 rpm--usually well below 5,000 rpm. This document details the progress to date on the program entitled ''Smaller Footprint Drilling System for Deep and Hard Rock Environments: Feasibility of Ultra-High-Speed Diamond Drilling'' for the period starting 1 October 2004 through 30 September 2005. Additionally, Research activity from 1 October 2005 through 28 February 2006 is included in this report: (1) TerraTek reviewed applicable literature and documentation and convened a project kick-off meeting with Industry Advisors in attendance. (2) TerraTek designed and planned Phase I bench scale experiments. Some difficulties continue in obtaining ultra-high speed motors. Improvements have been made to the loading mechanism and the rotational speed monitoring instrumentation. New drill bit designs have been provided to vendors for production. A more consistent product is required to minimize the differences in bit performance. A test matrix for the final core bit testing program has been completed. (3) TerraTek is progressing through Task 3 ''Small-scale cutting performance tests''. (4) Significant testing has been performed on nine different rocks. (5) Bit balling has been observed on some rock and seems to be more pronounces at higher rotational speeds. (6) Preliminary analysis of data has been completed and indicates that decreased specific energy is required as the rotational speed increases (Task 4). This data analysis has been used to direct the efforts of the final testing for Phase I (Task 5). (7) Technology transfer (Task 6) has begun with technical presentations to the industry (see Judzis)
Gro Holst Volden - One of the best experts on this subject based on the ideXlab platform.
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front end definition of projects ten paradoxes and some reflections regarding project management and project governance
International Journal of Project Management, 2016Co-Authors: Knut Samset, Gro Holst VoldenAbstract:Abstract The importance of the front-end decision-making phase in securing projects long-term success is being increasingly recognized. This area is underrepresented in the literature, but there are several key themes that run throughout, identifying key issues or difficulties during this stage. Clearly, a key to successful projects lies in the choice of Concept. This paper presents some findings from the work of the Concept Research programme on front-end management and governance of major public investment projects in Norway. It is based on studies that explore strengths and weaknesses in the processes of analysis and decision-making during the early phase before the final choice of Conceptual solution is made, and the extent to which projects under study are (or are likely to be) relevant and effective in relation to needs and priorities in society. It concludes that there are frequent deficiencies in these processes, and that the potential for improvements is huge.
Arnis Judzis - One of the best experts on this subject based on the ideXlab platform.
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smaller footprint drilling system for deep and hard rock environments feasibility of ultra high speed diamond drilling
Other Information: PBD: 1 Oct 2004, 2006Co-Authors: Ala D Lack, Arnis JudzisAbstract:The two phase program addresses long-term developments in deep well and hard rock drilling. TerraTek believes that significant improvements in drilling deep hard rock will be obtained by applying ultra-high rotational speeds (greater than 10,000 rpm). The work includes a feasibility of Concept Research effort aimed at development that will ultimately result in the ability to reliably drill ''faster and deeper'' possibly with smaller, more mobile rigs. The principle focus is on demonstration testing of diamond bits rotating at speeds in excess of 10,000 rpm to achieve high rate of penetration (ROP) rock cutting with substantially lower inputs of energy and loads. The significance of the ''ultra-high rotary speed drilling system'' is the ability to drill into rock at very low weights on bit and possibly lower energy levels. The drilling and coring industry today does not practice this technology. The highest rotary speed systems in oil field and mining drilling and coring today run less than 10,000 rpm-usually well below 5,000 rpm. This document details the progress at the end of Phase 1 on the program entitled ''Smaller Footprint Drilling System for Deep and Hard Rock Environments: Feasibility of Ultra-High-Speed Diamond Drilling'' for the period starting 1 March 2006 and concluding 30 June 2006. (Note: Results from 1 September 2005 through 28 February 2006 were included in the previous report (see Judzis, Black, and Robertson)). Summarizing the accomplished during Phase 1: {lg_bullet} TerraTek reviewed applicable literature and documentation and convened a project kickoff meeting with Industry Advisors in attendance (see Black and Judzis). {lg_bullet} TerraTek designed and planned Phase I bench scale experiments (See Black and Judzis). Some difficulties continued in obtaining ultra-high speed motors. Improvements were made to the loading mechanism and the rotational speed monitoring instrumentation. New drill bit designs were developed to provided a more consistent product with consistent performance. A test matrix for the final core bit testing program was completed. {lg_bullet} TerraTek concluded Task 3 ''Small-scale cutting performance tests.'' {sm_bullet} Significant testing was performed on nine different rocks. {sm_bullet} Five rocks were used for the final testing. The final tests were based on statistical design of experiments. {sm_bullet} Two full-faced bits, a small diameter and a large diameter, were run in Berea sandstone. {lg_bullet} Analysis of data was completed and indicates that there is decreased specific energy as the rotational speed increases (Task 4). Data analysis from early trials was used to direct the efforts of the final testing for Phase I (Task 5). {lg_bullet} Technology transfer (Task 6) was accomplished with technical presentations to the industry (see Judzis, Boucher, McCammon, and Black).
Dietrich Borchardt - One of the best experts on this subject based on the ideXlab platform.
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Integrated Water Resources Management: Concept, Research and Implementation - Integrated Water Resources Management: Concept, Research and Implementation
Integrated Water Resources Management: Concept Research and Implementation, 2016Co-Authors: Ralf Ibisch, Janos J. Bogardi, Dietrich BorchardtAbstract:This chapter reviews the Concept, contemporary Research efforts and the implementation of Integrated Water Resources Management (IWRM) which has evolved as the guiding water management paradigm over the last three decades. After analyzing the starting points and historical developments of the IWRM Concept this chapter expands on relations with recently upcoming Concepts emphasizing adaptive water management and the land-water-food-energy nexus. Although being practically adopted worldwide, IWRM is still a major Research topic in water sciences and its implementation is a great challenge for many countries. We have selected fourteen comprehensive IWRM Research projects with worldwide coverage for a meta-analysis of motivations, settings, approaches and implementation. Aiming to be an up-to-date interdisciplinary scientific reference, this chapter provides a comprehensive theoretical and empirical analysis of contemporary IWRM Research, examples of science based implementations and a synthesis of the lessons learnt. The chapter concludes with some major future challenges, the solving of which will further strengthen the IWRM Concept.
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integrated water resources management Concept Research and implementation
2016Co-Authors: Ralf Ibisch, Janos J. Bogardi, Dietrich BorchardtAbstract:This chapter reviews the Concept, contemporary Research efforts and the implementation of Integrated Water Resources Management (IWRM) which has evolved as the guiding water management paradigm over the last three decades. After analyzing the starting points and historical developments of the IWRM Concept this chapter expands on relations with recently upcoming Concepts emphasizing adaptive water management and the land-water-food-energy nexus. Although being practically adopted worldwide, IWRM is still a major Research topic in water sciences and its implementation is a great challenge for many countries. We have selected fourteen comprehensive IWRM Research projects with worldwide coverage for a meta-analysis of motivations, settings, approaches and implementation. Aiming to be an up-to-date interdisciplinary scientific reference, this chapter provides a comprehensive theoretical and empirical analysis of contemporary IWRM Research, examples of science based implementations and a synthesis of the lessons learnt. The chapter concludes with some major future challenges, the solving of which will further strengthen the IWRM Concept.
Arnis Judzis - One of the best experts on this subject based on the ideXlab platform.
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Smaller Footprint Drilling System for Deep and Hard Rock Environments; Feasibility of Ultra-High-Speed Diamond Drilling
2006Co-Authors: Arnis Judzis, Alan Black, Homer RobertsonAbstract:The two phase program addresses long-term developments in deep well and hard rock drilling. TerraTek believes that significant improvements in drilling deep hard rock will be obtained by applying ultra-high rotational speeds (greater than 10,000 rpm). The work includes a feasibility of Concept Research effort aimed at development that will ultimately result in the ability to reliably drill ''faster and deeper'' possibly with smaller, more mobile rigs. The principle focus is on demonstration testing of diamond bits rotating at speeds in excess of 10,000 rpm to achieve high rate of penetration (ROP) rock cutting with substantially lower inputs of energy and loads. The significance of the ultra-high rotary speed drilling system is the ability to drill into rock at very low weights on bit and possibly lower energy levels. The drilling and coring industry today does not practice this technology. The highest rotary speed systems in oil field and mining drilling and coring today run less than 10,000 rpm--usually well below 5,000 rpm. This document details the progress to date on the program entitled ''Smaller Footprint Drilling System for Deep and Hard Rock Environments: Feasibility of Ultra-High-Speed Diamond Drilling'' for the period starting 1 October 2004 through 30 September 2005. Additionally, Research activity from 1 October 2005 through 28 February 2006 is included in this report: (1) TerraTek reviewed applicable literature and documentation and convened a project kick-off meeting with Industry Advisors in attendance. (2) TerraTek designed and planned Phase I bench scale experiments. Some difficulties continue in obtaining ultra-high speed motors. Improvements have been made to the loading mechanism and the rotational speed monitoring instrumentation. New drill bit designs have been provided to vendors for production. A more consistent product is required to minimize the differences in bit performance. A test matrix for the final core bit testing program has been completed. (3) TerraTek is progressing through Task 3 ''Small-scale cutting performance tests''. (4) Significant testing has been performed on nine different rocks. (5) Bit balling has been observed on some rock and seems to be more pronounces at higher rotational speeds. (6) Preliminary analysis of data has been completed and indicates that decreased specific energy is required as the rotational speed increases (Task 4). This data analysis has been used to direct the efforts of the final testing for Phase I (Task 5). (7) Technology transfer (Task 6) has begun with technical presentations to the industry (see Judzis)