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Fluid Characterization in Unconventional Shale Reservoirs through New Generation NMR T1-T2 Logging

Date: February 21, 2017
Time: 11:30 am -1:00 pm    
Location: BP Plaza, Westlake 1 - Pondview 1 & 2.
501 Westlake Park Blvd, Houston, TX 77079 

Reservations: Register online Here
RSVP by noon, Monday before meeting
Time: Lunch 11:30, Presentation at 12:00
Cost: Free
Lunch: not provided, bring your own or purchase in the BP cafeteria
Sign In Process: You can proceed directly from the BP reception to the meeting room. Signing in at the security in not required. Please sign in on the attendance sheet in the meeting room.
Speaker: Vivek Anand
Manager of Interpretation Engineering for NMR Answer Products and Principal Research Scientist-Schlumberger


Fluid Characterization in Unconventional Shale Reservoirs through New Generation NMR T1-T2 Logging
The fundamental challenges in formation evaluation of unconventional shale reservoirs are the estimation of producible hydrocarbons and identification of target zones for horizontal wells. Modern gamma-ray spectroscopy tools can estimate the in-situ total organic carbon (TOC) which is an important parameter for determining the hydrocarbon potential of shale reservoirs. However, differentiating the components of TOC into kerogen, bound and free-hydrocarbon remains an outstanding problem. This talk describes a novel methodology for fluid characterization in unconventional shale reservoirs from NMR T1-T2 measurements. The methodology is based on the mathematical concepts of data analytics which aim to uncover consistent patterns and systematic relationships in the data without any
a-priori information. Fluids in shale reservoirs have unique T1-T2 signatures which depend on the wettability, fluid mobility in the pores, and fluid interactions with pore surfaces. From simultaneous analysis of T1-T2 measurements in an entire well, the methodology can accurately determine signatures and volumes of reservoir fluids. The extracted fluid signatures can be easily visualized for gaining further petrophysical insights.  
The application of the methodology is shown for detailed fluid characterization in several shale oil and gas plays.
High resolution T1-T2 measurements were obtained using a new-generation wireline NMR logging tool. The signatures of different fluids including bitumen, hydrocarbons in organic matter and inter-particle pores, clay-bound and inter-particle water could be resolved using the methodology. The fluid volumes show good comparison with core measurements obtained using Dean Stark and tight rock analysis. Integration of fluid volumes from T1-T2 measurements with other advanced wireline logs such as spectroscopy and dielectric measurements provides a complete formation evaluation in shales.
Vivek Anand is a Manager of Interpretation Engineering for NMR Answer Products and Principal Research Scientist at Schlumberger. He is also leading the development of Schlumberger’s latest generation NMR logging technology. Vivek obtained a Bachelor of Science degree from Indian Institute of Technology, New Delhi in 2002 and a
PhD from Rice University, Houston in 2007, both in Chemical Engineering. He has authored or coauthored more than 20 technical papers, and holds 10 US patents and patent applications. He is the Associate Editor for Petrophysics and Interpretation journals. He was the SPWLA distinguished speaker for 2009, the recipient of best paper awards for 2005 and 2013 SPWLA Annual Symposia, and 2011 SPE Young Professional best paper award.
Contact VP Westside: Chelsea Cassel for more information.