Lightning Protection for Salt Water Disposal
Saltwater Disposal Well
Oil- and gas-produced wastewater is disposed of by injection into an approved and certified saltwater disposal well. An independent well is drilled deep enough to penetrate an established formation that is porous enough to absorb the injected wastewater. A typical saltwater disposal facility has a settling battery, where the transported produced water is stored to separate any crude. The settled crude oil is then stored in steel tanks, while the produced water is typically kept in fiberglass tanks. During storage the fluids vent gas, which is released through vent valves to relieve tank pressure. Volatile vapor concentration is usually found in vent valves and atop the tanks. Lightning-induced streamers on vent valves, thief hatches, and metal piping atop the tank battery creates adequate heat to ignite hydrocarbon vapors, leading to tank fires. Steel tanks are considered naturally grounded, whereas fiberglass tanks have to be shielded to prevent direct lightning strikes that can ignite them. The flow of produced water in and out of fiberglass tanks generates static, which, if left uncontrolled, can cause in-tank fires.
Transfer of Produced Water
Poor grounding and bonding of tanker trucks with tanker load points can result in tanker truck fires because of the static generation that occurs during loading. Communication downtime results when the output of level transmitters, flow transmitters, PLC power supply, CPU, and control cards is damaged or compromised due to lightning events. This directly reduces your site’s productivity. Petro Guardian’s engineered surge protection and grounding for your RTU mitigates instrumentation downtime.
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Damage and Downtime
Damage and downtime to produced saltwater disposal operations can be avoided with Petro Guardian’s engineered approach to grounding and bonding. Contact the firstname.lastname@example.org to find out how to improve the integrity of grounding and bonding at your production wells, water injection wells, and gas injection wells.