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:
May. 03, 1988
Filed:
Jan. 16, 1987
Applicant:
Inventors:
Wilhelm E Walles, Freeland, MI (US);
Trevor D Williamson, Tulsa, OK (US);
Donald L Tomkinson, Auburn, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166300 ; 166308 ; 252-8551 ;
Abstract
Control release capsules comprising a breaker contained within a enclosure member are employed to break fracturing fluids. The enclosure member is permeable to at least one fluid in the subterranean formation or injected with the capsules such that upon sufficient exposure to the fluid, the capsules rupture, thereby releasing the breaker to the formation. In such manner, the release of the breaker can be conducted in a controlled manner. In addition, the entire amount of breaker introduced into the formation is released.