Oilfield Chemicals (Corrosion Inhibitor, Scale Inhibitor, Biocide and H2S Scavenger )
22/12/2023 02:12 PMPost by Rameshwar M Paswan
Chemicals used in the extraction, and processing of oil and gas are known as oilfield chemicals.
These substances improve oil recovery, inhibit corrosion, manage bacteria and scale formation, and raise overall oil and gas operations efficiency, among other things.
The particular needs of the oilfield and the kind of reservoir being used as a resource determine which oilfield chemicals are best.
These are a few typical kinds of chemicals used in oil and gas fields:
Drilling mud additives: These are used to lubricate the drill bit, suspend particles, and regulate viscosity.
Materials for Lost Circulation: Assist in preventing drilling fluid loss into the formation.
Chemicals used in production:
Corrosion Inhibitors: Prevent corrosion of metal equipment when corrosive materials like water and hydrogen sulphide are present.
Scale Inhibitors: Prevent the buildup of deposits that can impede production, such as calcium carbonate and barium sulphate.
Emulsion breakers: They help separate emulsions of water and oil, which makes it easier to produce crude oil efficiently.
Chemicals for Enhanced Oil Recovery (EOR): Surfactants: To improve oil recovery, change the interfacial tension between water and oil.
Polymer flooding agents: Increase water's viscosity to more successfully remove oil from reservoirs.
Alkaline Agents: To improve oil recovery, change the injected water's pH.
Well stimulation chemicals: acidizing agents: these are used to increase the flow of gas and oil by dissolving and removing formation damage surrounding the wellbore.
Friction reducers: During hydraulic fracturing, reduce friction in the wellbore to improve fluid flow.
Completion Fluids: During well completion, they are used to regulate temperature, pressure, and fluid loss.
Clay stabilisers: Stop the reservoir's clay from expanding and migrating.
Additives for Cement: Accelerators and retarders: Manage the cement's setting time during well cementing procedures.Reduce fluid loss from the cement slurry into the formation by adding additives for fluid loss.
H2S Scavengers: Eliminate or neutralise the hazardous and caustic gas hydrogen sulphide, which is frequently found in oil and gas reservoirs.
Biocides: Prevent bacteria and other microbes from growing in systems used in the extraction of oil and gas.
It's crucial to remember that laws and environmental concerns govern the usage of oilfield chemicals to guarantee sustainable and safe methods of producing oil and gas.