Application of Scavenger for Prevention and Remediation of Hydrogen Sulphide in Oil Exploitation

Hydrogen sulphide, a notorious toxic gas, has been found in some areas of Qing Hai Oilfield of the P. R. China, especially in the heavy oil blocks. Not only does it endanger the lives of operators, but it also causes corrosion damage on pipelines and engines. Both N80 and 20 # type steel pipe have been tested with concentrations up to 200 ppm H2S, It has been found that the corrosion products are made up of the Fe, Cl, S and Mn elements. A new type of scavenger named TEM-10-15 has been adopted to lessen the damage of the H2S. Experiments carried out in laboratory show that this treatment agent can eliminate the effects of H2S quickly and for a longer time. This method has also been used in on-site field trialsin the process of oil exploitation.