How to deal with hydrogen sulfide leakage in the h

2022-08-26
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How to deal with the leakage of hydrogen sulfide in oil and gas fields

hydrogen sulfide is a flammable and colorless gas, and the inhalation of hydrogen sulfide by human body can cause acute poisoning or chronic damage. Therefore, in case of hydrogen sulfide leakage, emergency measures must be taken to deal with it in time. Oil and gas fields are prone to hydrogen sulfide leakage. After it happens, we should pay attention to the following aspects to prevent accidents and minimize losses

first, wind vanes should be set at the entrance of the derrick, on the derrick, beside the drill floor, circulation system, etc. in case of emergency, operators can evacuate to the upper air outlet

install explosion-proof exhaust fans in places where gas is easy to accumulate, such as on and off the drill floor, vibrating screen, circulating tank, etc., to disperse harmful and combustible gases in the workplace. Drilling crews in sulfur-containing areas should be equipped with portable hydrogen sulfide detectors

secondly, in sulfur-containing areas, each person on duty on drilling and production shifts should be equipped with a set of air respirators. In addition, a certain number of public air respirators also give us great support, and everyone can use, maintain and inspect them. The drilling technicians of the drilling crew are responsible for hydrogen sulfide safety education, and the team leader is responsible for supervision and inspection. Moreover, the pH value of drilling fluid in sulfur-containing areas is required to be controlled at 9 More than 5. Strengthen the measurement of the concentration of hydrogen sulfide in the drilling fluid, give full play to the functions of sulfur remover and degasser, and keep the concentration of hydrogen sulfide in the drilling fluid below 50 mg/m3. When the content of hydrogen sulfide exceeds the safety critical concentration of 20 mg/m3, the staff should wear air respirators and are not allowed to act alone. Special personnel are assigned to monitor it, so that a more suitable 3D printing design can be selected to produce the scaffold field

the drilling crew stated on the site that the plan was issued in 2018 that when the blowout was decided that the well control operation could not be implemented, the released natural gas should be burned to prevent the mixture ratio of natural gas and air from reaching the explosion limit. The blowout ignition shall be carried out by a specially assigned person, who shall wear an air respirator and ignite remotely in the upwind direction. Once a blowout accident occurs, it should be immediately reported to the competent department of the oil and gas chip set signal amplification field. After blowout, fire engines, ambulances, medical personnel and technical safety personnel shall be on duty at the well pad. After the blowout is controlled, the concentration of hydrogen sulfide should also be tested at all posts in the well pad and places where hydrogen sulfide may accumulate. Personnel can only enter when the hydrogen sulfide concentration drops to the safety critical level

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