Oil based synthetic hydrocarbon drilling fluid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 23, 1993
Issued Date -
N/A
app pub date -
Jun 8, 1990
filing date -
Mar 30, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to an improved continuous phase for an oil based drilling fluid and specifically a synthetic hydrocarbon continuous phase which is non-polluting and minimally toxic. The invention provides excellent drilling fluid properties under a wide variety of drilling conditions. The synthetic hydrocarbons are selected from the group consisting of branched chain oligomers synthesized from one or more olefins containing a C.sub.2 to C.sub.14 chain length and wherein the oligomers have an average molecular weight of from 120 to 1000. In the drilling fluid compositions, suitable emulsifiers, wetting agents, viscosifiers, weight materials and fluid loss additives are utilized in conjunction with water and/or a brine phase for the desired rheological properties.
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