1. Nonpoint Oil and Gas Emission Estimation Tool for the 2017 NEI
Mike Pring, Eastern Research Group
April 11, 2019

2. U.S. Environmental Protection Agency
2017 Tool Available
ftp://ftp.erg.com/EPA_OIL_GAS_2017/
login = guestftp
password = Good19Friday
(Note the password expires April 30)
6/30/2019
U.S. Environmental Protection Agency

3. U.S. Environmental Protection Agency
2017 Tool Files
Exploration Tool
OIL_GAS_TOOL_2017_NEI_EXPLORATION_V1_0.zip
Production Tool
OIL_GAS_TOOL_2017_NEI_PRODUCTION_V1_0.zip
2017 V1 Report
2017 Nonpoint Oil and Gas Emission Estimation Tool Report V1 April pdf
2017 Nonpoint Oil and Gas Emission Estimation Tool Report Appendix C - Data Element Dictionary.xlsx
2017 Nonpoint Oil and Gas Emission Estimation Tool Report Appendix D - US OIL AND GAS BASINS.xlsx
2017 V1 Changes Memo
2017 Nonpoint Oil and Gas Emission Estimation Tool Revisions_V1 2017_4_11_2019
6/30/2019
U.S. Environmental Protection Agency

4. U.S. Environmental Protection Agency
2017 V1 Changes (4/11/2019)
GHGRP Subpart W Updates
See 3/14/2019 Subpart W Memo
Added SCC for CBM Dewatering Pump Engines
Revised SCCs
Updated Oil Well Completion Factors
736 MCF/completion for conventional (CenSARA)
1,602 MCF/completion for unconventional (US GHGEI)
2014 SCC
2014 SCC Description
2017 SCC
2017 SCC Description
Oil & Gas Expl & Prod /All Processes /Artificial Lift
Oil and Gas: Onshore Oil Production/Artificial Lift Engines
On Shore Crude Oil Production All Processes
Oil and Gas: Onshore Oil Production/Associated Gas Venting
6/30/2019
U.S. Environmental Protection Agency

5. U.S. Environmental Protection Agency
2014 to 2017 Tool Changes
February 14, 2019 Changes Memo
March 14, 2019 Subpart W Memo
April 11, 2019 Changes Memo
Tool Change Log
6/30/2019
U.S. Environmental Protection Agency

6. U.S. Environmental Protection Agency
2014 to 2017 Emission Changes
Source Category
NOx
VOC
Associated Gas
71%
-41%
Condensate Tanks
14%
-48%
Crude Oil Tanks
25%
-54%
Dehydrators
-98% 6%
Drill Rigs
-62%
-55%
Fugitives NA
-24%
Hydraulic Fracturing
-69%
-65%
Mud Degassing
Well Completions
-30%
-36%
Wellhead Compressor Engines
-17%
-20%
6/30/2019
U.S. Environmental Protection Agency

7. Exploration Emission Changes
Drilling
Hydraulic Fracturing
Mud Degassing
6/30/2019
U.S. Environmental Protection Agency

8. Production Emission Changes
Associated Gas Venting – 8.7% controlled to 25.7%
Condensate Tanks – 69% controlled to 85%
Crude Oil Tanks – 53% controlled to 85%
Dehydrators – 1 per well to 0.02 per well
Wellhead Compressor Engines – fewer gas wells, lower fraction needing compression
Fugitives – components counts down ~10%, well counts down
6/30/2019
U.S. Environmental Protection Agency