Abstract:
A reservoir in payrock in analysed using finite element simulation. A reservoir engineer selects an appropriate model from a set of template models, each including a set of polygons in plan and layers in elevation. The polygons are defined in objects instantiated from classes by control points and the layers as depth values of control points. A pattern object sweeps rotationally about a wellbore in a wellbore polygon to define a pattern of elements, fewer in number with distance from the wellbore. A polygon object also sweeps linearly from a generator line in the direction of a base line. The generator and base lines correspond to polygon boundaries. Finite element simulation is performed with the model so derived.
Abstract:
Apparatus for spraying an ice surface with a white paint comprises a trailer having a tank carried on the trailer, a pump and a boom having a plurality of spray nozzles. The tank has a large opening in the top for receiving bags of paint pigment. The pump is a high capacity pump which generates a flow rate significantly greater than necessary to supply the nozzles. The excess is returned to the tank through a jet mixing system including four arms each having a pair of jet nozzles. A mixing wand is also provided which receives mixed materials from the pump for the jet nozzle for stirring within the tank. The nozzles are closely spaced so as to generate an overlapping spray pattern. The nozzles generate a fine mist and are directed slightly upwardly and rearwardly.
Abstract:
The bucket elevator construction bolt comprises a flat head and a threaded shaft, the bolt further incorporating a collar adjacent the head, the collar including a plurality of elongate, radially arrayed spline teeth which engage within the material of the elevator belt, maintaining the bolt position against radial torque or vibratory forces applied thereto.
Abstract:
A thermally insulating glass panel comprises two spaced apart sheets of glass enclosing a low pressure space and interconnected by a peripheral joint of fused solder glass and an array of support pillars, and a pump-out tube used to provide communication between the low pressure space and the exterior of the panel during the creation of the low pressure space. The support pillars each comprise a preformed core of a selected geometry and a selected material and a coating of solder glass at least in the areas between the preformed core and the sheet glass. Preferably the preformed core is spherically shaped and completely coated by solder glass. The preformed core serves to separate the glass sheets during the heating process of the panel's fabrication when the solder glass is in its molten state, and the solder glass serves as a mechanical joint to support the glass sheets after solidification. Furthermore, to increase the strength of the mechanical joint, a thin film of solder glass may be placed in the vicinity of the support pillars on the glass sheets, thereby increasing the wetted area of the solder glass coating of the support pillar.