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Title: Method for enhancing hydrocarbon recovery from tight formations

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.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1475579
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM) SNL
Patent Number(s):
10,066,471
Application Number:
14/976,102
Contract Number:
AC04-94AL85000
Resource Relation:
Patent File Date: 2014 Dec 23
Research Org:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

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