Installing Plunger Lift Systems In Gas Wells
and motors, resulting in additional revenue of $41,500 per installation.
A summary of the costs and benefits associated with Amoco’s plunger lift installation program is provided below in Exhibit 13. For the first year of operation, the company realized an average annual savings of approximately $90,200 per well at 2006 prices. In addition the company realized approximately $41,500 per well from salvage of the beam lift equipment at 2006 costs.
Plunger lift systems offer several advantages over other remedial treatments for removing reservoir fluids from wells: increased gas sales, increased well life, decreased well maintenance, and decreased methane emissions. The following should be considered when installing a plunger lift system:
Plunger lift installations can offer quick paybacks and high return on investments whether replacing a beam lift or blowdowns.
ExxonMobil Big Piney Field
At Big Piney Field in Wyoming, Natural Gas STAR charter Partner Mobil Oil Corporation (now merged with Exxon) has installed plunger lift systems at 19 wells. The first two plunger lifts were installed in 1995, and the remaining
Plunger lift installations can greatly reduce the amount of remedial work needed throughout the Exhibit 14: Plunger Lift Program at Big Piney, Wyoming
As a overall
wells were equipped
in 1997. reduced
emissions by 12,164 Mcf per methane emission reduction, reduced the venting of ethane
In addition to the
(6 percent by
Pre-Plunger Emission Volume (Mcf/yr/well)
Post-Plunger Emission Volume (Mcf/yr/well)
Annualized Reduction (Mcf/yr/well)
Exhibit 14 shows the emission after plunger lift installation.
The following suggestions can help ensure trouble-free installation of a plunger lift system:
Do not use a completion packer, because it limits the amount of gas production per plunger trip. Without a completion packer, the entire annular void space is available to create a large compressed gas supply. The greater the volume of gas, the larger the volume of water that can be lifted.
Check for tubing obstructions with a gauge ring
Tubing obstructions hinder may require replacement of
Capture the plunger Inspection of the plunger
damage, sand, or subsequent plunger
for the presence of will help prevent
permitting immediate operational repair while the crew and installation equipment are mobilized.