Drilling fluid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 23, 2013
Grant Date -
Nov 3, 2011
app pub date -
Jul 12, 2011
filing date -
Apr 3, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This invention is based upon the finding that certain chlorosulfonated α-olefin copolymers can be beneficially utilized in drilling fluids that are utilized in drilling subterreanean wells. For instance, it has been unexpectedly found that certain chlorosulfonated α-olefin copolymers can be beneficially used as total or partial replacements for organoclays in oil based drilling fluids. The subject invention more specifically reveals a process for drilling a well into a subterranean formation which comprises boring a hole into the earth by rotary drilling, wherein a drilling fluid is circulated down a drilling pipe and returned to the surface of the earth through a pipe hole annulus, wherein the oil-based drilling fluid is comprised of (a) an organic liquid; (b) water; (c) an emulsifier; (d) a weighing material; (e) a fluid loss reducing agent; and (f) a chlorosulfonated α-olefin copolymer which is comprised of repeat units that are derived from ethylene and an α-olefin that contains from 4 to about 20 carbon atoms.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully