Paper: Microprocessor Controlled Blender Used To Provide Ramping Sand Concentration Schedule During Fracturing Jobs In West Texas

A standard fracturing blender retrofitted with a microprocessor controlled proppant delivery system has been operating in the Odessa, Texas area since May 15, 1986. The speed and control capabilities of the system's microprocessor has allowed fracturing operations incorporating non-standard "ramping" sand concentration schedules to be routinely performed with this blender. Fracturing operations with "stair step" sand concentration schedules have also been completed with this blender. Subject paper presents a case history of fracturing operations performed in West Texas with a microprocessor controlled fracturing blender. Pre-job planning, system operation and blending capabilities of the blender are also discussed. Case history documentation for fracturing operations with ramping sand concentration schedules is presented in the form of strip chart data collected during these operations. Documentation is also presented for a fracturing operation with a stair step sand concentration schedule.