| BMP ID: |
7478 |
| Title: |
Connect Casing to Vapor Recovery Unit |
| Text: |
"Crude oil and natural gas wells that produce through tubing may collect methane and other gases in the annular space between the casing and tubing. This gas, referred to as casing head gas, is often vented directly to the atmosphere. One way to reduce methane emissions is to connect the casing head vent to an existing vapor recovery unit (VRU)." |
| Source Publication Name: |
Connect Casing to Vapor Recovery Unit |
| Citation Section: |
Wells: Connect Casing to Vapor Recovery Unit |
| Citation Page: |
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| Supplemental Documents: |
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| Usage Type: |
Recommended |
| Timing: |
• Production / Operation / Maintenance
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| Oil / Gas Field: |
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| Surface Ownership: |
• Federal
• State
• Private
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| Mineral Ownership: |
• Federal
• State
• Private
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| Primary Contact: |
Environmental Protection Agency
Ariel Rios Building, 1200 Pennsylvania Avenue, N.W.
Washington, DC 20460 United States |
| Phone: | (202) 272-0167 |
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Alt. Phone: | (202) 272-0165 |
| Fax: | |
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E-mail: | |
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| Alternate Contact: |
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| Categories: |
Air Quality and Emissions
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| Location: |
General / Federal |
| Species: |
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| Vegetation Types: |
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| General Comments: |
Pressure regulators would be necessary if low pressure casing head gas is combined with higher pressure sources (e.g., dehydrator flash tank separator) at a VRU suction. Only small diameter piping is required to join a casing head vent to the VRU suction. |
| Cost-Benefit Analysis: |
"This technology can pay back quickly. Revenue from gas recovery will pay back the piping cost and the incremental electrical power required by the VRU to inject the gas into a 100 psig system. At 7.5¢ per kWh, the partner reported gas recovery would increase electricity costs by $3,400 per year." |
| BMP Efficacy: |
"Casing head gas vents vary widely in quantity and methane content. One partner reported an annual average casing head gas methane recovery of 7,300 Mcf per year over a five-year period. This may be equivalent to about 10,000 Mcf per year of gas containing 73 percent methane." |
| Date Entered: |
2010-07-29 08:42 UTC |
| Last Updated: |
2010-07-29 14:12 UTC |
