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US 2020/0165504 A1Published application
Spacer fluid compositions that include surfactants
AssigneeSaudi Arabian Oil Company
InventorsHussain AlBahrani, Abdullah Al-Yami, Vikrant Wagle
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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 atom, 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.
Claims9
A spacer fluid comprising:
- a base fluid;
- and
- a surfactant package comprising one or more surfactants, where the surfactant package comprises a first surfactant having the chemical structure:
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 comprising one or more surfactants, where the surfactant package comprises a first surfactant 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 first surfactant has a hydrophilic-lipophilic balance (HLB) of from 12 to 13.5.
5 more elements
Dependencies are inferred from the claim text.