WorldWide Drilling Resource

25 JUNE 2022 WorldWide Drilling Resource® An Eco-Friendly Way to Tackle Corrosion Compiled by the Editorial Staff of WorldWide Drilling Resource® The gas and oil industry spends around $1.37 billion each year trying to prevent metallic corrosion. Inhibiting corrosion is critically important for maintaining the safety of pipelines and avoiding accidents. Today, preventing corrosion in a costeffective manner while maintaining an eco-friendly operation is important. Clariant, a Swiss specialty chemicals company, now global with an Oil and Mining Services division, is working to ensure their corrosion product line is environmentally benign. Most often in well operations, low-grade carbon steel pipes, rather than expensive alloys, transport fluids and gases. Inhibitors can prevent corrosive acid attack caused by the presence of dissolved carbon dioxide (CO2) and hydrogen sulphide (H2S) gases in hydrocarbon or produced water flow. These corrosion inhibitors are formulated from precise ratios of three to seven ingredients. Small changes in these formulas can result in large changes in inhibitor application effectiveness. Other considerations in recipe variations must be given to the specific conditions of temperature, pressure, salinity, and composition of the produced water and hydrocarbon. Clariant’s CORRTREAT® corrosion inhibitors are a part of its comprehensive range of chemical products. Preventing pitting corrosion, providing high temperature protection, high shear protection, as well as high CO2 and H2S protection, CORRTREAT is an environmentally acceptable ethoxylated amine containing corrosion inhibitor in a water/glycol-based solvent package. It provides excellent inhibition toward general and local corrosion, as well as exceptional protection against preferential weld attack. CORRTREAT corrosion inhibitors are also multifunctional products, which increase efficiency and reduce costs while meeting the most stringent environmental regulations. In 2019, Clariant opened a high-throughput experimentation (HTE) laboratory in Houston, Texas. Widely used in other industries, HTE allows large numbers of experiments to be conducted in parallel, and the company saw an opportunity to expand HTE globally. The technique’s effectiveness relies on automated instrumentation and programmed robots to blend and test thousands of corrosion inhibitor chemicals within a few days. Combining robots with combinatorial chemistry as innovation tools, the company says this is much more efficient than any conventional approach. Specialized software tools, miniaturization, intelligent design, and enhanced analytics are also a part of the process. Clariant believes their use of HTE to formulate custom corrosion control solutions is unique. Their lab is designed to rapidly and accurately screen the most effective inhibitor formulations for the application. Understanding the prevalent system conditions and recreating in the laboratory the field corrosion environment is necessary, as well as knowledge of metallurgy involved, temperatures and pressures the hydrocarbons travel at, and even pipe-run lengths. Many detailed application experiments are executed simultaneously due to automation. The lab depends on industry-derived standards with specified formulation ranges as a place to start. Clariant digitizes their formulation efforts, saving the data, thus enabling instant access for future use. Photo courtesy of the State of California. G&O 302-684-319 Mfg., Inc. & Atlantic Scree et om ducts 7 n E-mail: atlantic@ce.n Atlantic-Screen.c Pipe Clear PVC j Inline Chemical Mixers j ell Rehabilitation Pro jW DE 142 Broadkill Rd Milton, ½” - 24 ranging fr Perforated of Slotted Manufactu Fax: 302-384-0643 more! MUCH And j Bailers Sampling j Locking Caps j Filter Sock j Bentonite j Manholes j ” om Pipe and rers 19968