Caterpillar to reform well service ASC for low flow applications

CX31CX31 basic configuration. (Image source: Caterpillar Oil & Gas)Caterpillar Oil & Gas has introduced the Cat® Dynamic Transmission Output, allowing for manual shift automated speed control (ASC) of the Cat CX31-P600 well service transmission for well service pumping applications, cementing and mobile work over rigs

“The primary benefit of the Cat ASC is the ability to achieve consistent low flow during critical cementing applications,” said Rodney Harms, well service manager for Caterpillar Oil & Gas.

“The system controls output speed via the torque converter lock-up clutch to achieve precise flow control. This ability to automatically control the output speed to achieve very low speeds mimics a deep first gear ratio, giving well service operators a new tool to perform low flow operations,” Harms added.

The feature is targeted to cementing applications which require 0.25 bpm flow rate. Cementing applications require precise flow control when performing squeeze jobs, which are completed with low flow rates. The Cat DTOC system aims to provide a safe soft link for control of the torque converter lock up which translates to precise flow control.

The Cat engine and transmission monitoring systems focus on reporting engine performance and enabling operators to identify inefficiencies, maintenance issues or engine warnings. The system monitors transmission oil temperatures, aiming to ensure safe and reliable completion of jobs without exceeding allowable values maintaining system life and integrity.

“The system works through simplified operation allowing more precise flow control and reduced bumping in and out of gear,” according to Harms. He further stated, “It also allows for more reliable operation by limiting heat rejection and increased lube flow for improved durability.”

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