| US 7,547,663 B2 | ||
| Invert drilling fluids and methods of drilling boreholes | ||
| Jeff Kirsner, Humble, Tex. (US); Don Siems, Houston, Tex. (US); Kimberly Burrows-Lawson, Kingwood, Tex. (US); David Carbajal, Houston, Tex. (US); Ian Robb, Duncan, Okla. (US); and Dale E. Jamison, Humble, Tex. (US) | ||
| Assigned to Halliburton Energy Services, Inc., Duncan, Okla. (US) | ||
| Filed on Dec. 05, 2006, as Appl. No. 11/633,704. | ||
| Application 11/633704 is a continuation of application No. 10/292124, filed on Nov. 12, 2002, granted, now 7,456,135, filed on Nov. 25, 2008. | ||
| Application 10/292124 is a continuation in part of application No. 10/175272, filed on Jun. 19, 2002, granted, now 6,887,832. | ||
| Application 10/175272 is a continuation in part of application No. 09/929465, filed on Aug. 14, 2001, abandoned. | ||
| Application 09/929465 is a continuation in part of application No. PCT/US00/35609, filed on Dec. 29, 2000. | ||
| Application PCT/US00/35609 is a continuation in part of application No. PCT/US00/35610, filed on Dec. 29, 2000. | ||
| Prior Publication US 2007/0078061 A1, Apr. 05, 2007 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. C09K 8/36 (2006.01); E21B 21/00 (2006.01) | ||
| U.S. Cl. 507—103 [175/65; 507/136; 507/138; 507/140; 516/21] | 67 Claims |
| 1. A method for drilling in a subterranean formation, comprising:
providing an invert emulsion drilling fluid
having substantially equal dial readings at 40° F. and at 120° F.
when measured at 3 rpm or 6 rpm using a FANN viscometer at atmospheric pressure; and
drilling in the subterranean formation with the drilling fluid
while substantially maintaining an average ECD of less than 0.5 over a drilling interval of at least about 200 feet.
|