Compositions – Leather or fur treating
Patent
1988-12-01
1990-02-13
Locker, Howard J.
Compositions
Leather or fur treating
252 8515, 166268, C09K 300, F21B 4316
Patent
active
049004565
ABSTRACT:
A method for the completion or work-over of a well comprises the step of using a solids-free, non-aqueous well-bore fluid comprising a halogenated organic compound as a completion or work-over fluid. The fluid has a specific gravity in the range 0.9 to 2.3.
Preferred halogenated organic compounds are brominated aromatic ethers, diphenyls, aliphatic hydrocarbons, benzene and alkyl benzenes.
The halogenated organic compound may be dissolved in an organic solvent. The relative proportions may be chosen to provide a well-bore fluid having a desired specific gravity.
The fluids are non-corrosive, thermally stable and non-damaging to formations.
REFERENCES:
patent: 2217926 (1940-10-01), Van Campen
patent: 2297660 (1942-09-01), Mazee
patent: 2805722 (1957-09-01), Morgan et al.
patent: 2894584 (1959-07-01), Birdwell et al.
patent: 2898294 (1959-08-01), Priest et al.
patent: 3168475 (1965-02-01), Jordan et al.
patent: 3494865 (1970-02-01), Andrews et al.
Halliburton Modern Well Completion (1976) Completion Fluids, pp. 2-11, Completion, Workover, and Packer Fluids.
Locker Howard J.
The British Petroleum Company p.l.c.
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