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Title: Assessment of Methane Emissions – Impact of Using Natural Gas Engines in Unconventional Resource Development

Abstract

Researchers at the Center for Alternative Fuels, Engines, and Emissions (CAFEE) completed a multi-year program under DE-FE0013689 entitled, “Assessing Fugitive Methane Emissions Impact Using Natural Gas Engines in Unconventional Resource Development.” When drilling activity was high and industry sought to lower operating costs and reduce emissions they began investing in dual fuel and dedicated natural gas engines to power unconventional well equipment. From a review of literature we determined that the prime-movers (or major fuel consumers) of unconventional well development were the service trucks (trucking), horizontal drilling rig (drilling) engines, and hydraulic stimulation pump (fracturing) engines. Based on early findings from on-road studies we assessed that conversion of prime movers to operate on natural gas could contribute to methane emissions associated with unconventional wells. As such, we collected significant in-use activity data from service trucks and in-use activity, fuel consumption, and gaseous emissions data from drilling and fracturing engines. Our findings confirmed that conversion of the prime movers to operate as dual fuel or dedicated natural gas – created an additional source of methane emissions. While some gaseous emissions were decreased from implementation of these technologies – methane and CO 2 equivalent emissions tended to increase, especially for non-road engines.more » The increases were highest for dual fuel engines due to methane slip from the exhaust and engine crankcase. Dedicated natural gas engines tended to have lower exhaust methane emissions but higher CO 2 emissions due to lower efficiency. Therefore, investing in currently available natural gas technologies for prime movers will increase the greenhouse gas footprint of the unconventional well development industry.« less

Authors:
 [1];  [1];  [1];  [1]
  1. West Virginia Univ., Morgantown, WV (United States)
Publication Date:
Research Org.:
West Virginia Univ., Morgantown, WV (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE), Oil and Natural Gas (FE-30)
OSTI Identifier:
1432184
Report Number(s):
DOE-WVU-FinalTechnicalReport
DOE Contract Number:  
FE0013689
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; Regulated emissions; Unconventional wells; Horizontaldrilling; Hydraulic fracturing; Natural gas; Dual fuel

Citation Formats

Nix, Andrew, Johnson, Derek, Heltzel, Robert, and Oliver, Dakota. Assessment of Methane Emissions – Impact of Using Natural Gas Engines in Unconventional Resource Development. United States: N. p., 2018. Web. doi:10.2172/1432184.
Nix, Andrew, Johnson, Derek, Heltzel, Robert, & Oliver, Dakota. Assessment of Methane Emissions – Impact of Using Natural Gas Engines in Unconventional Resource Development. United States. doi:10.2172/1432184.
Nix, Andrew, Johnson, Derek, Heltzel, Robert, and Oliver, Dakota. Sun . "Assessment of Methane Emissions – Impact of Using Natural Gas Engines in Unconventional Resource Development". United States. doi:10.2172/1432184. https://www.osti.gov/servlets/purl/1432184.
@article{osti_1432184,
title = {Assessment of Methane Emissions – Impact of Using Natural Gas Engines in Unconventional Resource Development},
author = {Nix, Andrew and Johnson, Derek and Heltzel, Robert and Oliver, Dakota},
abstractNote = {Researchers at the Center for Alternative Fuels, Engines, and Emissions (CAFEE) completed a multi-year program under DE-FE0013689 entitled, “Assessing Fugitive Methane Emissions Impact Using Natural Gas Engines in Unconventional Resource Development.” When drilling activity was high and industry sought to lower operating costs and reduce emissions they began investing in dual fuel and dedicated natural gas engines to power unconventional well equipment. From a review of literature we determined that the prime-movers (or major fuel consumers) of unconventional well development were the service trucks (trucking), horizontal drilling rig (drilling) engines, and hydraulic stimulation pump (fracturing) engines. Based on early findings from on-road studies we assessed that conversion of prime movers to operate on natural gas could contribute to methane emissions associated with unconventional wells. As such, we collected significant in-use activity data from service trucks and in-use activity, fuel consumption, and gaseous emissions data from drilling and fracturing engines. Our findings confirmed that conversion of the prime movers to operate as dual fuel or dedicated natural gas – created an additional source of methane emissions. While some gaseous emissions were decreased from implementation of these technologies – methane and CO2 equivalent emissions tended to increase, especially for non-road engines. The increases were highest for dual fuel engines due to methane slip from the exhaust and engine crankcase. Dedicated natural gas engines tended to have lower exhaust methane emissions but higher CO2 emissions due to lower efficiency. Therefore, investing in currently available natural gas technologies for prime movers will increase the greenhouse gas footprint of the unconventional well development industry.},
doi = {10.2172/1432184},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {4}
}