×

Emulsifier compositions for invert emulsion fluids and methods of using the same

  • US 10,570,324 B2
  • Filed: 04/18/2017
  • Issued: 02/25/2020
  • Est. Priority Date: 02/03/2017
  • Status: Active Grant
First Claim
Patent Images

1. An invert emulsion fluid comprising an oleaginous phase, an aqueous phase dispersed in the oleaginous phase, and an emulsifier composition comprising:

  • 1.4 wt. % of an ethoxylated alcohol compound having formula (I);


    R1

    (OCH2CH2)n

    OH 



    (I)where R1 is a hydrocarbyl group having from 12 to 14 carbon atoms and n is 1, where the ethoxylated alcohol compound has a Hydrophilic-Lipophilic Balance (HLB) of less than or equal to 6; and

    0.2 wt. % of a polyaminated fatty acid compound having formula (II);


    R2

    CO—

    NH—

    CH2

    CH2

    N(COR2)—

    CH2

    CH2

    NH—

    CO—

    R3



    (II)where R2 is hydrocarbyl group having from 1 to 20 carbon atoms and R3 is an alkylene carboxylate group having formula —

    R4

    COOH, where R4 is a saturated or unsaturated hydrocarbylene having 2 carbon atoms.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×