Longhole veinlet mining operation by down-the-hole-drilling.
نویسندگان
چکیده
منابع مشابه
Study on Storable Down-hole Drilling String Vibration Testing System
Drilling engineering is a high input and risk underground project, which needs the real-time down-hole diagnosis and forecast technique. Drilling string vibration signals contain full and complex vibration waves, which contains the vibration of the drilling string by itself, the vibration stimulated by the interaction of bit and the formation, the vibration induced by colliding between drill st...
متن کاملDevelopments Made in the Field of Drilling Fluids by Saint Petersburg Mining University
The article discusses researches performed in the Well Drilling Department of the St. Petersburg Mining University. The directions of development of the department are shown. Special attention in this article is paid to research in the field of developing drilling fluids for drilling wells in various mining and geological conditions. It is shown that the gas-liquid mixtures studied by the depar...
متن کاملMicro-hole drilling with femtosecond fiber laser
In this paper, micro-hole drilling in ambient air is presented using fs fiber laser (750 fs & 1030 nm). Micro holes were fabricated in both transparent (glasses) and non-transparent materials (metals and tissues). Hole shape and morphology was characterized and evaluated with optical microscope and scanning electron microscopy (SEM). Debris-free micro holes with good roundness and no thermal da...
متن کاملInvestigating the Effect of Gamma Ray Source Activity on Down-hole Nuclear Density Tool’s Reading Using Simulation by MCNP Code
Developing well logging methods will increase the applications of logs related to all the other geology sciences. Well logging curves introduce the essential information to evaluate reservoir characterizations, rock type and also formation fluid properties quantitatively. One of the most important parts of drilling and completion operations which affect making decision about the future planes i...
متن کاملDown the Large Rabbit Hole
This article documents my journey down the rabbit hole, chasing what I have come to know as a particularly unyielding problem in Ramsey theory on the integers: the 2-Large Conjecture. This conjecture states that if D ✓ Z+ has the property that every 2-coloring of Z+ admits arbitrarily long monochromatic arithmetic progressions with common di↵erence from D then the same property holds for any fi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Shigen-to-Sozai
سال: 1991
ISSN: 0916-1740,1880-6244
DOI: 10.2473/shigentosozai.107.350