Invention Grant
- Patent Title: Evaluating stress-dependent permeability in unsteady-state conditions and/or quality of microproppant placement in subterranean formations
-
Application No.: US15879863Application Date: 2018-01-25
-
Publication No.: US10677707B2Publication Date: 2020-06-09
- Inventor: Ronald Glen Dusterhoft , Vladimir Nikolayevich Martysevich , Brice Kim , Ibrahim Yucel Akkutlu
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: Baker Botts L.L.P.
- Agent Thomas Rooney
- Main IPC: E21B49/00
- IPC: E21B49/00 ; G01N15/08 ; E21B43/267 ; E21B43/26 ; E21B49/02 ; G01N33/28 ; G01N33/22

Abstract:
Systems and methods for evaluating permeability at unsteady-state pressure conditions and areal distribution of microproppants are provided. In some embodiments, the methods comprise: obtaining a first dataset relating to a positive permeability through a split core plug sample of a subterranean formation at a plurality of different differential pressures; obtaining a second dataset relating to a positive permeability through the split core plug sample at each different differential pressure after a plurality of microproppant particles have been placed between two halves of the sample; extrapolating a baseline positive permeability of the sample at a differential pressure equal to zero based on the first dataset; extrapolating a treated positive permeability of the sample at a differential pressure equal to zero based on the second dataset; calculating a closure resistance of the fracture and the fracture closure pressure using the second dataset; and estimating a proppant areal placement factor.
Public/Granted literature
Information query