Westside: Hydraulic Fracture Geometry Characterization Using Low-Frequency DAS Signal

Speaker Dr. Ge Jin, Senior Geophysicist, ConocoPhillips
Dr. Ge Jin works as a senior geophysicist in subsurface technology at ConocoPhillips. His research focuses on fiber-optic sensing data interpretation. He developed a series of applications that utilize Distributed Acoustic Sensing (DAS) signals in the low-frequency band to characterize unconventional reservoirs. Dr. Jin obtained his Ph.D. in geophysics from ...

Dr. Ge Jin works as a senior geophysicist in subsurface technology at ConocoPhillips. His research focuses on fiber-optic sensing data interpretation. He developed a series of applications that utilize Distributed Acoustic Sensing (DAS) signals in the low-frequency band to characterize unconventional reservoirs. Dr. Jin obtained his Ph.D. in geophysics from Columbia University in New York and holds dual B.S. degrees in geophysics and computer science from Peking University.

Full Description

Monitoring and diagnosing completions during hydraulic fracturing operations provides insights into the fracture geometry, interwell frac hits, and connectivity. Conventional monitoring methods (microseismic, pressure gauges, tracers, etc.) can provide a range of information about the stimulated rock volume but may often be limited in detail. Utilization of distributed acoustic sensing (DAS) as a fracture monitoring tool is growing; however, most of the applications have been limited to acoustic frequency bands of the DAS recorded signal.

This presentation will showcase some examples using the low-frequency band of the DAS signal to constrain hydraulic fracture geometry. DAS data were acquired in both offset horizontal and vertical monitor wells. In horizontal wells, DAS data records formation strain perturbations due to fracture propagation. Events like fracture opening and closing, stress shadow creation and relaxation, ball seating, and plug isolation can be clearly identified. In vertical wells, DAS responses agree with co-located pressure and temperature gauges and illuminate the vertical extent of hydraulic fractures. It will be shown that DAS data in the low-frequency band provide a powerful attribute to monitor small strain and temperature perturbations in or near the monitor wells. With different fiber monitor well designs, it is possible to measure the far-field fracture length, height, width, and density using cross-well DAS observations.

 

Registration for this event closes at 6:00 PM CDT on Monday, April 16, 2018.  

 

Organizer Bharath Rajappa

Telephone:  (832) 486-3122          Email: bharath.rajappa@conocophillips.com

Please note any dietary restrictions in the Comments Section on the Event Registration Form.  


Registration and payment must be completed in full to guarantee attendance. An individual with an incomplete or unpaid registration will be considered as a walk-in attendee and only admitted as space permits. 

When?

Wed, Apr. 18, 2018
11:30 a.m. - 1 p.m. America/Chicago

How Much?

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Where?

Norris Westchase Center
9990 Richmond Ave., Suite 102
Houston, TX 77042

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