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Rapid Approximate Simulation of Multiple Hydraulic Fractures

Cheng, Cheng (2021) Rapid Approximate Simulation of Multiple Hydraulic Fractures. Doctoral Dissertation, University of Pittsburgh. (Unpublished)

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Hydraulic fracturing enables oil and gas extraction from low-permeability reservoirs, but there remains a need to reduce the environmental footprint. Resource use, contaminant-bearing flowback water, and potential for induced seismicity are all scaled by the volume of injected fluid. Furthermore, the greenhouse gas emissions associated with each extracted unit of energy can be decreased by improving resource recovery. To minimize fluid use while maximizing recovery, a rapidly-computing model is developed and validated to enable the thousands of simulations needed to identify opportunities for optimization. Lower pumping pressure approaches that minimize pressure loss through the wellbore perforations combined with non-uniform spacing are shown to be capable of substantially reducing fluid consumption and/or increasing created fracture surface area when the stress variation is mainly from fracture interaction instead of in-situ stress. When in-situ stress variation is dominant, “limited entry” methods promote more uniform growth but with higher pumping pressures and energy consumption


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Cheng, Chengchc203@pitt.eduCHC203
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Thesis AdvisorBunger, Andrewbunger@pitt.edubunger0000-0002-0696-7066
Committee MemberEnick,
Committee MemberMorsi,
Committee MemberSlaughter,
Date: 26 January 2021
Date Type: Publication
Defense Date: 21 October 2020
Approval Date: 26 January 2021
Submission Date: 28 October 2020
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 182
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Chemical Engineering
Degree: PhD - Doctor of Philosophy
Thesis Type: Doctoral Dissertation
Refereed: Yes
Uncontrolled Keywords: Hydraulic fracturing
Date Deposited: 26 Jan 2021 20:47
Last Modified: 26 Jan 2021 20:47

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