Long term scale inhibition and economic enhancement is a desired outcome for oil and gas operators. The completion phase of a well involves hydraulic fracturing, which involves the introduction of a mixture of water and specially engineered chemicals pumped at high pressures and rates to achieve a fracture into a low permeable formation. Due to these mix waters, pressure, fluctuations, and temperature variations form the fracturing operation, liquid scale inhibition chemicals are typically pumped 'on the fly' throughout the fracturing treatment. Typically, these chemicals deplete within months after the fracturing operation and the need for continuous intervention from a chemical service company is then required to inhibit any scale potential as the well produces. This study evaluates a wolfberry trend field and compares conventional liquid scale inhibitors versus solid inhibitors over a selection of over 300 wells. This study demonstrates the effectiveness of scale inhibition, longevity, and the economic impact.
Presenters
Cruz Hernandez-Diaz, Baker Hughes Inc.