The Technical Development for Increasing ROP with Particle Impact Drilling in China

2014 ◽  
Vol 904 ◽  
pp. 292-295 ◽  
Author(s):  
Jian Zhao ◽  
Yi Ji Xu
Keyword(s):  
Field Test ◽  
Hard Rock ◽  
Rock Breaking ◽  
Particle Impact ◽  
Sound Effect ◽  
Deep Well ◽  
Working Principle ◽  
Hard Formation ◽  
Field Test Result ◽  
Test Result

Field test of particle impact drilling (PID) technology was firstly carried out in deep well and hard formation in Sichuan province china on Oct. 2013. The test formation was named Xu Jiahe, which was very difficult to penetration. Field test result shows that the ROP (rate of penetration) was nearly doubled by this technology. It indicates that there is a profound application prospect of particle impact drilling, especially for hard rock formation. In this paper, the equipment and working principle was analyzed. The experiment and simulation results showed that the rock breaking efficiency was highly increased by this technology. The details of this field test were presented too in this paper that proved the sound effect of PID.

Field Test Result of Residential SOFC CHP System Over 10 Years, 89000 Hours

2021 ◽  
Vol MA2021-03 (1) ◽  
pp. 8-8
Author(s):  
Minoru Suzuki ◽  
Shuichi Inoue ◽  
Takashi Shigehisa
Keyword(s):  
Field Test ◽  
Chp System ◽  
Field Test Result ◽  
Test Result

Field Test Result of Residential SOFC CHP System Over 10 Years, 89000 Hours

2021 ◽  
Vol 103 (1) ◽  
pp. 25-30
Author(s):  
Minoru Suzuki ◽  
Shuichi Inoue ◽  
Takashi Shigehisa
Keyword(s):  
Field Test ◽  
Chp System ◽  
Field Test Result ◽  
Test Result

scholarly journals DEVELOPMENT MODEL APPROACH THROUGH EXERCISE KINESTHETIC GAME CIRCUIT FOR CHILDREN AGES 4-6 YEARS

2017 ◽  
Vol 3 (1) ◽  
pp. 41
Author(s):  
Bangkit Seandi Taroreh
Keyword(s):  
Physical Activity ◽  
Field Test ◽  
Development Model ◽  
Test Results ◽  
Design Development ◽  
Activity Model ◽  
Motion Activity ◽  
Field Test Result ◽  
Basic Motion ◽  
Test Result

AbstractThis study aims to develop a basic kinesthetic based motion activity model for children aged 4-6 years. The design of this study refers to the Borg and Gall development model consisting of ten steps. These steps are 1) preliminary study aims to know the needs analysis in developing physical activity. It was concluded that a basic kinesthetic based motion activity model is required for children aged 4-6 years, 2) planning by formulating forms of participation in research); 3) design development, done by drafting and validated to 4 (four) experts and 1 (one) practitioner with 52 basic motion based kinesthetic activities, 4) conducting limited field test using 20 subjects, 5) revision of field test result limited clarity of implementation procedure and handbook, 6) broader field test using 50 subjects, 7) the revision of the field test results is broader, nothing needs to be revised because all aspects already meet the standards, 8) the main test through the model effectiveness test done 40 subjects, 9) the final product, 10) dissemination. Subjects in this study were children aged 4-6 years in Kindergarten. Place of research conducted in Tangerang City. Data were collected through documentation, observation, questionnaires and kinesthetic tests. Data analysis is done descriptively from qualitative and quantitative data. The results of the study are the basic kinesthetic based motion activity activity for children aged 4-6 years. The results prove that the development of a kinesthetic based motion activity model for children aged 4-6 years has been declared valid by motor learning experts, physical activity experts and early childhood education practitioners.Keywords: basic motion activity, kinesthetic, children aged 4-6 years.

scholarly journals Progress and development of particle jet drilling speed-increasing technology and rock-breaking mechanism for deep well

2021 ◽  
Author(s):  
Tiancheng Fang ◽  
Fushen Ren ◽  
Hanxu Liu ◽  
Yuan Zhang ◽  
Jianxun Cheng
Keyword(s):  
Constitutive Model ◽  
High Efficiency ◽  
Rock Breaking ◽  
Drilling Speed ◽  
Speed Increase ◽  
Deep Well ◽  
Jet Impact ◽  
Drilling Technology ◽  
Breaking Mechanism ◽  
Hard Formation

AbstractIncreasing drilling speed and efficiency of hard formation for deep and ultra-deep well is one of the international recognized drilling problems and key technologies to be tackled urgently. Particle jet impact drilling technology is an efficient non-contact rock-breaking method to overcome slow drilling speed, which has great development and application potential in drilling speed-increase of hard formation and deep well. High efficiency drilling technology and rock-breaking speed-increase mechanism in high temperature, high pressure and high hardness formations of deep and ultra-deep wells were mainly focused and keynoted in this paper. With extensive investigation of domestic and foreign literature, the working principle, key technical devices, deep-well-rock mechanical characteristic, unconventional constitutive model and rock-breaking mechanism of particle jet impact drilling technology were analyzed, which proved the feasibility and high efficiency for deep and hard stratum, and also, dynamic failure mechanism of rock needs to be elaborated by constructing the constitutive model with high temperature and pressure. Meanwhile, the major problems to be solved at present and development direction future were summarized, which mainly included: miniaturization of drilling equipment and individualization of drilling bit; optimization of jet parameters and the evaluation method of rock-breaking effect; establishment of mechanical property and unconventional constitutive model of deep-well-rock; rock-breaking mechanism and dynamic response under particle jet coupling impact. The research can help for better understanding of deep-well drilling speed-increasing technology and also promote the development and engineering application of particle jet impact drilling speed-increase theory and equipment.

scholarly journals DEVELOPMENT OF A GUIDEBOOK FOR DESIGNING INTERACTIVE DISTANCE LEARNING (PIJAR) FOR LECTURERS OF TECHNOLOGY AND VOCATIONAL EDUCATIONAL DEPARTEMENT

2021 ◽  
Vol 9 (1) ◽  
pp. 27-34
Author(s):  
Ratna Pancawati
Keyword(s):  
Distance Learning ◽  
Field Test ◽  
Implementation Process ◽  
Learning System ◽  
Requirement Analysis ◽  
Test Results ◽  
The Media ◽  
Field Test Result ◽  
Development Result ◽  
Test Result

The research aims at developing a guidebook for designing interactive distance learning for lecturers, considering that lecturers need guidance on how to design a learning implementation process that remains interactive in a full online learning system during the Covid 19 pandemic. The development of a guidebook stage adopted the model of Dick & Carey which modified into 4 stages, namely stages; (1) requirement analysis; (2) product design; (3) validation and evaluation; and (4) product revision. Based on development result, data found as follows; (1) the expert's assessment shows that the guidebook is included in the criteria of "very good" from the media aspect (94.44%) and "good" from the material aspect (86.11%) hence the guidebook can be used in learning; (2) test results on a small group shows that the product developed include in the criteria of  “good” (83,33%) hence the guidebook can be used in learning; (3) field test result that the product developed include in the criteria of “good” (89,28%) hence the guidebook can be used in learning. Key words: Interactive learning, distance learning  

Field Test Result of 10MVA/20MJ SMES for Load Fluctuation Compensation

2010 ◽  
Vol 130 (1) ◽  
pp. 126-131 ◽  
Author(s):  
Shigeo Nagaya ◽  
Tatsuya Nagata ◽  
Naoki Hirano ◽  
Tsutomu Tamada ◽  
Yoshio Nijo ◽  
...  
Keyword(s):  
Field Test ◽  
Load Fluctuation ◽  
Field Test Result ◽  
Test Result
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