Invention Grant
- Patent Title: Biodegradable anti-accretion additive for water-based drilling fluids
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Application No.: US14406701Application Date: 2013-06-05
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Publication No.: US10308858B2Publication Date: 2019-06-04
- Inventor: Andrea Assmann , Roland Reichenbach-Klinke , Jutta Karin Langlotz
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP12175319 20120706
- International Application: PCT/EP2013/061530 WO 20130605
- International Announcement: WO2014/005778 WO 20140109
- Main IPC: C09K8/08
- IPC: C09K8/08 ; E21B7/00 ; C09K8/528
Abstract:
The use of gelatin-based copolymers containing at least one grafted side chain formed from ethylenically unsaturated compounds as an anti-accretion additive is proposed for water-based drilling fluids in the development, exploitation and completion of underground mineral oil and natural gas deposits and in deep wells. These copolymers are water-soluble and have good biodegradability.
Public/Granted literature
- US20150159073A1 BIODEGRADABLE ANTI-ACCRETION ADDITIVE FOR WATER-BASED DRILLING FLUIDS Public/Granted day:2015-06-11
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