Cheng, Cheng
(2021)
Rapid Approximate Simulation of Multiple Hydraulic Fractures.
Doctoral Dissertation, University of Pittsburgh.
(Unpublished)
This is the latest version of this item.
Abstract
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
Share
| Citation/Export: |
|
| Social Networking: |
|
Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
|
| 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 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/39891 |
Available Versions of this Item
-
Rapid Approximate Simulation of Multiple Hydraulic Fractures. (deposited 26 Jan 2021 20:47)
[Currently Displayed]
Metrics
Monthly Views for the past 3 years
Plum Analytics
Actions (login required)
 |
View Item |
![[feed]](/images/feed-icon-32x32.png){kind=icon}