Method of treating oil or gas well with biodegradable emulsion

Details Method of treating oil or gas well with biodegradable emulsion Method of treating oil or gas well with biodegradable emulsion

2008-07-01

2008-07-01

Suchfield, George (Department: 3676)

Wells

Processes

Chemical inter-reaction of two or more introduced materials

C166S304000, C166S312000, C507S203000, C507S261000, C507S266000, C507S905000, C507S929000

Reexamination Certificate

active

11388103

ABSTRACT:
A biodegradable water-in-synthetic oil base emulsion, effective in the removal of filter cakes, consists of an external phase of a surfactant emulsified in a paraffinic base oil. The emulsion is particularly effective in breaking-down the interfacial rheological properties of oil base mud and synthetic oil base mud filter cakes and acts as a demulsifier to break the water-in-oil emulsions present in such oil base and synthetic oil base muds.

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Berry, S.L. et al; “Laboratory Development and Application of a Synthetic Oil/Surfactant System for Cleanup of OB and SBM Filter Cakes”; Society of Petroleum Engineers (SPE 97857); 2006; pp. 1-12.
Berry, S.L.; “Optimization of Synthetic-Based and Oil-Based Mud Displacements with an Emulsion-Based Displacement Spacer System”; Society of Petroleum Engineers (SPE 95273); 2005; pp. 1-11.
Shrieve Chemical Products & Shrieve Products International, Ltd.; “Product Data Sheet Bio-Base® 560 Base fluid with a high n-paraffin content”; Jul. 2004.
Shrieve Chemical Products & Shrieve Products International, Ltd.; “Material Safety Data Sheet Bio-Base® 637”; May 2004; pp. 1-9.

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