Borehole cleaning is still a major challenge for most directional wells despite significant progress achieved in drilling fluids, tools and field practice, as well the development of academic industry research. Insufficient borehole causes undesirable phenomena form various complications. Therefore, purpose conducted research was to present main correlations that determine nature degree annular...

Yinghui Liu, Brian Weinberg, Constantinos Mavroidis* Department of Mechanical & Industrial Engineering, Northeastern University 360 Huntington Avenue, Boston MA 02115, Tel: 617-373-4121, Fax: 617-373-2921 Email: [email protected], Webpage: http://www.coe.neu.edu/~mavro * Associate Professor, Corresponding Author Abstract Deep space drilling is necessary for appropriate chemical and biological s...

Effective gas management is vital to the success of the longwall mining in the Bulli seam, in the Southern Coalfield, Sydney Basin, NSW, Australia. The evolution of gas drainage methods and practices are discussed with respect to gas type, gas drainage lead time and prevailing geological conditions. Both underground to inseam drilling and surface to inseam drilling techniques are described at b...

In this paper, we propose a robust method to register a panoramic range data obtained by a panoramic laser range finder and an omni-directional image acquired by a stereo omni-directional system (SOS), by matching the horizontal and vertical edge histograms of the two images. The proposed method first estimates the relative horizontal rotation angle by matching the vertical edge histograms. Nex...

Shale gas represents a major fraction of the proven reserves of natural gas in the United States and a collection of other countries. Higher gas prices and the need for cleaner fuels provides motivation for commercializing shale gas deposits even though the cost is substantially higher than traditional gas deposits. Recent advances in horizontal drilling and multistage hydraulic fracturing, whi...

BACKGROUND Most studies examining the safety and efficacy of transphyseal anterior cruciate ligament (ACL) reconstruction for skeletally immature patients utilize transtibial drilling. Independent femoral tunnel drilling may impart a different pattern of distal femoral physeal involvement. PURPOSE To radiographically assess differences in distal femoral physeal disruption between transtibial ...

Global demand growth has driven the development of more inventive methods for enhancing oil well drilling at lower prices and avoiding operational issues that slow down drilling. The present research is significant because lifting capacity may be increased by inserting polymer beads into mud instead high-cost additives. numerical cuttings trajectory simulation was performed using commercial ANS...