The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2006
Filed:
Nov. 14, 2002
Neil Grainger, Stockton on Tees, GB;
Terence Cox, Saltburn by Sea, GB;
Edward George Scovell, Middlesbrough, GB;
Neil Grainger, Stockton on Tees, GB;
Terence Cox, Saltburn by Sea, GB;
Edward George Scovell, Middlesbrough, GB;
Imperial Chemical Industries PLC, London, GB;
Abstract
Drilling, completing or workover of a well, particularly an oil and/or gas well, is carried out using a fluid which includes a continuous phase including an ester of the formula (I): (R)-Ph-(CH)—COO-(AO)-Rwhere R, AO, n, m, Ph, Rand p have defined meanings and particularly where the esters are alkyl or alkenyl benzoate esters. These esters are beneficial by having a range of viscosities, especially extending to low viscosities, and attractive toxicological and environmental profiles for use in drilling, completion and/or workover of wells.