ATMOSPHERIC STORAGE MECHANICAL WEIGHT BATCH BLENDING PLANT

摘要

An atmospheric storage mechanical weigh batch blend plant is shown with atmospheric storage for providing a dry, pre-blend, oilfield cement ready for mixing at the wellhead for slurry injection into a well head upon adding the proper amount of water and other fluids. The batch blend plant has three separate weighing mechanisms for (a) larger or bulk quantity materials, (b) intermediate quantities of materials, and (c) small amounts of additives to be included to the mixture. The entire weigh batch blend plant can be disassembled and moved. A pneumatic system is used to move the materials and mixture.

主权项

1. A batch-type blend plant for providing a dry, pre-blended mixture prepared according to a recipe for use in oil well encasement, which recipe includes by weight bulk materials, intermediate materials and additives, said batch-type blend plant comprising:
bulk tanks for holding each of said bulk materials; intermediate vessels for holding each of said intermediate materials; additive containers for holding each of said additives; a pneumatic delivery system for separately moving said bulk materials selected from said bulk tanks to a blender, said blender separately receiving and weighing each selected said bulk materials, said selection being according to said recipe; intermediate weigher for separately weighing each of said intermediate materials selected from said intermediate vessels, said selection being according to said recipe, after weighing each selected said intermediate materials being delivered to said blender via said pneumatic delivery system; additive weigher for separately weighing said additives selected from said additive containers, said selection being according to said recipe, after weighing each selected said additives being delivered to said blender via said pneumatic delivery system; and after mixing by said blender, the weighed combinations of said bulk materials, intermediate materials and additives being a pre-blend prepared according to said recipe, forwarding said pre-blend by said pneumatic delivery system from said blender to a pre-blend vessel for use in said oil well encasement.