Low fluid loss additive composition. [for plugging highly permeable strata around borehole]
Patent
·
OSTI ID:7327469
An oil-soluble, water-insoluble low fluid loss additive composition is comprised of a particulated, homogeneous solid solution of (1) wax; (2) an oil-soluble polyhydroxy higher fatty acid partial ester surface active agent; and (3) a water-dispersible surface active agent such as a polyoxyethylene alkyl phenol, a polyethylene glycol higher fatty acid ester, a polyoxyethylene polyhydroxy higher fatty acid ester, a polyoxyethylene tertiary fatty amine, or a polyoxyethylene fatty amide condensate. The composition can optionally include small amounts of a polymeric material and/or a higher fatty alcohol. The low fluid loss additive composition can be employed in well drilling, completion and workover operations, and in hydraulic fracturing, acidizing, and other well treating applications.
- Assignee:
- Union Oil Co.
- Patent Number(s):
- US 3979305
- OSTI ID:
- 7327469
- Country of Publication:
- United States
- Language:
- English
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