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METHOD FOR ENHANCING HYDROCARBON RECOVERY FROM TIGHT FORMATIONS

United States Patent Application

*** PATENT GRANTED ***
20170356281
10,066,471
A1
View the Complete Application at the US Patent & Trademark Office
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A method of increasing recovery of liquid hydrocarbons from subsurface reservoirs, and particularly from those located in tight formations, is disclosed. One aspect includes calculating the in situ fractured formation wettability from real-time measurement of flowback volume and composition. Another aspect includes determining the composition of the fracturing fluid, the overflush or both, that will achieve higher liquid hydrocarbon recovery by increasing the water wettability of rock surfaces within the reservoir. Monitoring of rock-surface wettability through flowback volume and composition profiles allows the above mentioned injectates to be adjusted in the field to achieve maximal recovery. Other methods, apparatuses, and systems are disclosed.
Brady, Patrick V. (Sandia Park, NM), Bryan, Charles R. (Albuquerque, NM), Heneman, Helmuth J. (Thompson, TN)
14/ 976,102
December 23, 2014
STATEMENT OF GOVERNMENT RIGHTS [0002] This invention was developed under Contract DE-AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.