Results 251 to 260 of about 16,082 (297)
Some of the next articles are maybe not open access.
Penetrating brain injury by drill bit
Clinical Neurology and Neurosurgery, 2008Non-missile low velocity penetrating brain injuries are unusual among civilian population. They show specific characteristics different from missile wounds. In this paper we describe a rare case of self-inflicted penetrating head trauma by electric drill. We document neuroimaging studies and review the management concerning this pathology.
Raquel, Gutiérrez-González +4 more
openaire +2 more sources
Improved Hardfacing for Drill Bits and Drilling Tools
Journal of Thermal Spray Technology, 2010Abstract New flame spray hardfacing, DSH (DuraShell Steel Hardfacing, US patent pending), is developed to improve thermal conductivity, abrasion wear and erosion resistance for subterranean drilling application. The hardfacing materials consist of spherical cast WC/W2C and Ni-Si-B alloy powders.
J.A. Sue, H. Sreshta, B.H. Qiu
openaire +1 more source
1962
Boring holes is often necessary in woodwork. It is a comparatively simple operation to perform, and if care is taken and a few precautions are followed, you should have no difficulty. Holes must be located accurately; they must be bored at the correct angle, and the wood should not be allowed to split when the bit comes through the back of the stock ...
openaire +1 more source
Boring holes is often necessary in woodwork. It is a comparatively simple operation to perform, and if care is taken and a few precautions are followed, you should have no difficulty. Holes must be located accurately; they must be bored at the correct angle, and the wood should not be allowed to split when the bit comes through the back of the stock ...
openaire +1 more source
Effects of Slugger Drill Bits in Drilling of Composites
Volume 3: Design and Manufacturing, 2007One of the problems in machining of composites is related with the fibers as reinforcement, due to their abrasiveness, causing fast tool wear and deterioration of machined surface. Among all the damages that can occur in the drilling of a composite plate, delamination is the most serious, as it can cause loss of mechanical strength of laminate plates ...
Ashkan Sahraie Jahromi +3 more
openaire +1 more source
Innovation in Drilling Using Replaceable Drilling Bit
SPE Middle East Oil and Gas Show and Conference, 2007Abstract In conventional drilling a majority of drilling problems occur during tripping such as key seating and wall sticking. This leads to increase in rig time hence cost is unnecessarily high, especially in deep sea drilling. Conventional drilling techniques use rotary drill bits which need to be replaced depending on ...
Sudeepto Banerjee, Yash Gupta
openaire +1 more source
ADVANCE DRILL BIT DESIGNED FOR MINIMUM COST DRILLING
Proceedings of Middle East Technical Conference and Exhibition, 1979Abstract The Tri-Max* is a new bit developed after five years of research and field tests with the main objective of minimizing the drilling cost. The trade name Tri-Max stands for:–Maximum Footage–Maximum Rate of Penetration–Maximum Safety The Tri-Max bit runs have achieved a 38% increase in the ...
openaire +1 more source
A drill bit with sphero-conical rolling-cutter drill bits
Construction of Oil and Gas Wells on Land and Sea, 2020V.Yu. Bliznyukov, D.Yu. Serikov
openaire +1 more source
Proper Selection Of Drill Bits And Their Use
SPE Mechanical Engineering Aspects of Drilling and Production Symposium, 1964Publication Rights Reserved This paper is to be presented at the Mechanical Engineering Aspects of Drilling Production Symposium in Fort Worth, Tex., on March 23–24, 1964, and is considered the property of Society of Petroleum Engineers.
openaire +1 more source
Spinal Impalement with a Drill Bit
The Journal of Emergency Medicine, 2009Tomer, Begaz, Faran, Bokhari
openaire +2 more sources
Development models for the drill bit lifetime prediction and bit wear types
International Journal of Rock Mechanics and Minings Sciences, 2021Mehmet Capík
exaly