US 6,981,560 B2
Method and apparatus for treating a productive zone while drilling
Philip D. Nguyen, Duncan, Okla. (US); and Michael Sanders, Duncan, Okla. (US)
Assigned to Halliburton Energy Services, Inc., Duncan, Okla. (US)
Filed on Jul. 03, 2003, as Appl. No. 10/613,487.
Prior Publication US 2005/0000731 A1, Jan. 06, 2005
Int. Cl. E21B 17/18 (2006.01)
U.S. Cl. 175—70 31 Claims
OG exemplary drawing
 
1. A method for delivering a treatment fluid to an interval of a subterranean formation while drilling, comprising the steps of:
(a) delivering a drill-in fluid to a drill bit drilling a well bore in the interval;
(b) removing drill cuttings from the well bore; and
(c) injecting the treatment fluid into the interval, wherein step (c) is performed simultaneously with steps (a) and (b).