New Strategy of Controlling Risks in Development of Oil & Gas Fields with Hydrogen Sulfide

Abstract

Abstract As a result of analysis of long standing experimental investigations, objective laws were discovered and mathematic models of technogenic risks were formed. The author investigated the risks associated with possible emergency releases of H2S-containing vapours of gases when developing oil & gas fields. Criteria were substantiated and evaluation methods were created for the level of dangerous H2S intoxication with due regard for the time of its impact to a person and dynamics of air contamination level in conditions of real emergency situations. Efficiency of already known and new proposed measures was evaluated theoretically and experimentally. Such measures envisage "passive" protection of people and environment as well as active influence to an emergency release of gas. New strategy of technogenic risk control was proposed. It is applicable to typical targets of oil & gas industry. It is based on rational organizational measures, computer programs and other technical means, technologies and devices for operative prevention, protection and liquidation of emergency. Unlike earlier applied emergency programs, new technologies of active impact to the source of emergency gas release and to the spreading clowd of toxic gas-air mixture were recommended for practical usage as the most efficient and rational ones. Results of practical tests of proposed methods at the largest oil & gas producing complexes in Russia have been considered in this paper. The achieved efficiency allows to recommend the proposed methods for practical usage at chemically dangerous targets of various industries in order to provide safety of people and to protect environment against emergency contamination of air.