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Rheological characteristics of adjustable cross-linked fracturing fluids

Conference · · Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:6042772
A study was done evaluating apparent viscosity and fluid stability by allowing cross-linking to occur at varying times during and after a period of high shear. A high temperature closed-loop pipe viscometer was used for this process. To observe the interdependencies of shear history, cross-linking time, and apparent viscosity, two adjustable cross-linked fracturing fluid systems were employed. As part of the study, a plexiglass parallel plate fracture and wellbore model was used to observe proppant transport for both fluid systems at ambient temperature. Results of these studies indicate that when cross-linking time is less than the high shear duration period, both the maximum viscosity and the fluid's stability are reduced. The amount of reduction is shown to be related to the difference between the high shear duration period and the cross-link time. Also, from observations made on the plexiglassfracture model, a better understanding of the relationships among treating string residence time, cross-link time, fluid stability, and proppant transport in the vicinity of the wellbore can be developed.
Research Organization:
BJ - Hughes Services Inc.
OSTI ID:
6042772
Report Number(s):
CONF-8409104-
Conference Information:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE 13178
Country of Publication:
United States
Language:
English