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US 11,098,231 B2Granted
Spacer fluid compositions that include surfactants
AssigneeSaudi Arabian Oil Company
InventorsHussain AlBahrani, Abdullah Al-Yami, Vikrant Wagle
Life of this patent
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Abstract
In one embodiment, a spacer fluid may comprise a base fluid and a surfactant package. The surfactant package may comprise one or more surfactants, where the surfactant package comprises a first surfactant having the chemical structure R—(OC2H4)x—OH. R may be a hydrocarbyl group having from 9 to 20 carbon atoms, and x may be an integer from 5 and 15. The first surfactant may have a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5.
Claims11
A spacer fluid comprising:
- a base fluid;
- and
- a surfactant package consisting essentially of one or more surfactants having the chemical structure:
- where the surfactant package is the group of one or more surfactant species which are included in the spacer fluid.
1 more element
A method for cementing a well bore, the method comprising:
- displacing at least a portion of a drilling fluid positioned in the well bore with a spacer fluid, where the spacer fluid comprises:
- a base fluid;
- and
- a surfactant package consisting essentially of one or more surfactants having the chemical structure R—(OC2H4)x—OH, where:
- R is a hydrocarbyl group having from 9 to 20 carbon atom;
- x is an integer from 5 and 15;
- and
- the surfactant package is the group of one or more surfactant species which are included in the spacer fluid, where the one or more surfactants of the surfactant package have a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5.
5 more elements
Dependencies are inferred from the claim text.