Automated method for quality control and quality assurance of sized bridging material

摘要

A method for quality control and quality assurance of sized bridging materials rotates a control sample having a fluid portion and a solids portion of sized bridging materials in a tubular container for a predetermined period of time. The control sample is then analyzed in a laser particle size analyzer to determine a particle size distribution for the control sample. A wet grinding sample having a fluid portion and a solids portion of the sized bridging materials is then rotated in the tubular container with a loose cylinder rod for a predetermined time to simulate borehole conditions. The wet grinding sample is then analyzed in the laser particle size analyzer to determine a particle size distribution for the wet grinding sample. The two particle size distributions are used to define a shift factor that represents the relative strength of the sized bridging materials.

主权项

1. A method for testing and quantifying structural durability characteristics of sized bridging materials, the method comprising the following steps:
(a) selecting a control sample of the sized bridging materials, the control sample having a fluid portion and a solids portion; (b) sealing the control sample in a cylindrical testing cell, the cylindrical testing cell having a substantially cylindrical inner wall; (c) rotating the cylindrical testing cell containing the control sample; (d) measuring a particle size of the rotated control sample to define a control particle size distribution; (e) selecting a wet grinding sample of the sized bridging materials, the wet grinding sample having a fluid portion and a solids portion; (f) sealing the wet grinding sample in the cylindrical testing cell with a loose cylindrical rod; (g) rotating the cylindrical testing cell containing the loose cylindrical rod such that the loose cylindrical rod rolls in relation to the cylindrical inner wall of the cylindrical testing cell, the loose cylindrical rod applying force to the wet grinding sample to partially crush the wet grinding sample; (h) removing a volumetric sample of the material within cylindrical testing cell that contains both a fluid portion and a solids portion; (i) without drying the volumetric sample, measuring a particle size of solids in the volumetric sample to define a wet grinding sample particle size distribution; and (j) comparing the control particle size distribution to the wet grinding sample particle size distribution to define a shift factor representing a relative strength for the tested sized bridging materials.