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:
Mar. 26, 1996
Filed:
Mar. 06, 1995
David D Onan, Lawton, OK (US);
Bobby G Brake, Duncan, OK (US);
Halliburton Company, Duncan, OK (US);
Abstract
The present invention provides improved methods of combating lost drilling fluid circulation in wells, particularly in wells penetrating vugular and naturally fractured formations such as geothermal wells. The methods basically comprise the steps of forming a quick set cementitious composition which when drilled after setting produces cuttings compatible with the drilling fluid being used, introducing the cementitious composition into the drilling fluid thief zone in the well, allowing the composition to set into a cementitious plug in the thief zone and then continuing the drilling of the well bore through and below the cementitious plug.