Drilling fluid
AssigneeShell Oil Company
InventorsBurnell Lee, David Matthew Brown, Graham Francis Whale, Michael James Spence, Delina Yvonne-Marie de Souza Lyon
Life of this patent
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Abstract
The present invention relates to drilling fluid comprising one or more linear internal olefin having from 15 to 18 carbon atoms and containing less than 25% branching based on the total amount of the linear internal olefin and a hydrogenated Fischer-Tropsch derived product.
Claims15
A drilling fluid comprising one or more linear internal olefin having from 15 to 18 carbon atoms and containing less than 25% branching based on the total amount of the linear internal olefin and a hydrogenated Fischer-Tropsch derived product comprising a Fischer-Tropsch normal paraffin having from 14 to 18 carbon atoms.
A method for drilling, comprising the step of
- providing a drilling fluid comprising one or more linear internal olefin having from 15 to 18 carbon atoms and containing less than 25% branching based on the total amount of the linear internal olefin and a hydrogenated Fischer-Tropsch derived product comprising a Fischer-Tropsch normal parrafin having from 14 to 18 carbon atoms,
- thereby increasing the anaerobic biodegradability and lowering the sediment toxicity of the one or more linear internal olefin and the hydrogenated Fischer-Tropsch derived products in drilling fluid compositions.
Dependencies are inferred from the claim text.