NRAP Tools Use – Interim Update

Neeraj Gupta, Battelle, Columbus, Ohio,

gupta@battelle.org, 1-614-424-3820

IEAGHG Workshop, Edinburgh July 7, 2016

DOE/NETL Cooperative Agreement # DE-FC26-0NT42589

• NRAP wellbore integrity tools considered

to support several CO2 storage

research/field projects (MRCSP, Integrated

Wellbore Integrity Analysis Program for CO2

Storage Applications (FE0026585))

• Emphasis on examining condition of legacy

oil and gas wells b/c Midwest U.S. has over

1 million of them dating back to 1800s.

• WLAT- tool used to evaluate wells in terms

of CO2 leakage potential.

• NSealR- tool was reviewed for site

screening related to wellbore integrity in

areas with 10s-100s of legacy oil and gas

wells.

• WLAT- We were most interested in trying to match

observed SCP gas flow rates to cemented wellbore model

or open borehole model.

Sustained Casing Pressure Field TestingWLAT Model

SOURCE: Huerta, N. J.; Vasylkivska, V. S. Well Leakage Analysis

Tool (WLAT) User’s Manual; NRAP-TRS-III-XXX-2015; NRAP

Technical Report Series; U.S. DOE-NETL: Morgantown, WV, 2015 SOURCE: Huerta, N. J.; Vasylkivska, V. S. Well Leakage Analysis

Tool (WLAT) User’s Manual; NRAP-TRS-III-XXX-2015; NRAP

Technical Report Series; U.S. Department of Energy, National Energy

Technology Laboratory: Morgantown, WV, 2015

• A total of 23 wells were surveyed for SCP at Michigan Basin Site. 6

wells were tested for SCP. SCP testing to date has shown no

significant CO2 leakage; therefore, we do not have much field data yet

to calibrate against. Additional data collection is planned.

• Field data from other natural gas wells used for some analysis. In

general, field patterns agree with WLAT published test cases.

SOURCE: Huerta, N. J.; Vasylkivska, V. S. Well Leakage Analysis

Tool (WLAT) User’s Manual; NRAP-TRS-III-XXX-2015; NRAP

Technical Report Series; U.S. DOE-NETL: Morgantown, WV, 2015

4

Temperature

Rate Change ModelField Data

Pre

ss

ure

(kP

aa)

Field Testing of SCP

NOTE: this well reflects methane leakage (NOT CO2),

However shows general gas flux rate. WLAT Model

• DREAM Applications using the Midwestern Wellbore

Integrity Database (Planned effort)

• Project in development with PNNL and Battelle to use

DREAM tool to evaluate CO2 storage sites in Ohio and

Michigan based on database of legacy well records.

• The combination of the well integrity database and the

DREAM tool will bolster the use of both as decision making

tools, allowing for more informed analysis of site-specific

monitoring strategies. Deliverable Description Deliverable Date

Task 1- Well

database

Provide database of well records,

other field information data for

Michigan and Ohio Study Areas

April 2016

Task 2-

Simulations Develop DREAM Simulations November 2016

Task 3-

Monitoring

Configurations

Analaze DREAM output for

monitoring configurations in

region

March 2017

• DREAM Applications

• Data from Systematic Assessment of Wellbore Integrity for

Geologic Carbon Storage Projects Using Regulatory and

Industry Information (FE0009867) used as basis for DREAM

• Compliments work on determining costs/level of effort to

plug and repair legacy oil and gas wells.

8/1/20166