US 7,472,748 B2
Methods for estimating properties of a subterranean formation and/or a fracture therein
Rick D. Gdanski, Duncan, Okla. (US); and Jimmie D. Weaver, Duncan, Okla. (US)
Assigned to Halliburton Energy Services, Inc., Duncan, Okla. (US)
Filed on Dec. 01, 2006, as Appl. No. 11/607,254.
Prior Publication US 2008/0133193 A1, Jun. 05, 2008
Int. Cl. E21B 49/08 (2006.01)
U.S. Cl. 166—250.1  [166/250.12; 166/264; 166/308.1; 703/10] 20 Claims
OG exemplary drawing
 
1. A method comprising:
introducing a fracturing fluid into at least a portion of a subterranean formation at a pressure sufficient to create or enhance a fracture therein;
recovering a plurality of flowback fluid samples from the subterranean formation over time;
determining fluid identity data for the fracturing fluid and for one or more of the flowback fluid samples; and
determining one or more approximate properties of the subterranean formation and/or fracture based, at least in part, on the fluid identity data, one or more subterranean formation properties, and at least one reservoir model.