Use of methylhydroxyethyl cellulose as cement additive

摘要

Disclosed is the use of methylhydroxyethyl cellulose as an additive in cement slurries in the treatment of gas wells to prevent or reduce the occurrence of gas channeling. In addition to acting as a gas control additive, methylhydroxyethyl cellulose may also reduce fluid loss, minimise free fluid and stabilise foam during cementing of wells.