Low toxicity oil-based drilling fluid
Patent
·
OSTI ID:6436797
This patent describes a drilling fluid for use in rotary drilling of earthen formations consisting essentially of at least one drilling fluid additive selected from the group consisting of emulsifiers, viscosifiers, alkalinity control agents, filtration control reagents, weighting agents, brine, and wetting agents and further including a low polynuclear aromatic oil consisting essentially of 95 to 99% by weight branched-and cyclic-paraffins having 11 to 17 carbon atoms per molecule. The low polynuclear aromatic oil containing less than about 1% by weight aromatic hydrocarbons and less than about 5% by weight normal paraffins.
- Assignee:
- Conoco Inc., Ponca City, OK
- Patent Number(s):
- US 4787990
- OSTI ID:
- 6436797
- Country of Publication:
- United States
- Language:
- English
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·
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ADDITIVES
ALKANES
AROMATICS
BRINES
CHEMICAL COMPOSITION
DRILLING
DRILLING FLUIDS
EMULSIFIERS
FLUIDS
HYDROCARBONS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PH VALUE
POLYCYCLIC AROMATIC HYDROCARBONS
REAGENTS
ROCK DRILLING
ROTARY DRILLING
TOXICITY
WELLS
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ADDITIVES
ALKANES
AROMATICS
BRINES
CHEMICAL COMPOSITION
DRILLING
DRILLING FLUIDS
EMULSIFIERS
FLUIDS
HYDROCARBONS
NATURAL GAS WELLS
OIL WELLS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PH VALUE
POLYCYCLIC AROMATIC HYDROCARBONS
REAGENTS
ROCK DRILLING
ROTARY DRILLING
TOXICITY
WELLS