|
HDESP versus Beam Pump
Summary
of Results
This paper will highlight the
economic advantage of using a Hydraulic Diaphragm Electric Submergible Pump in
an oil well with an averaging daily production of 3 barrels of oil per day and
a pump set depth of 1200 feet in 4.5” casing and 1.5” tubing.
Details supporting the economic
summary data below are included on the following page.
The
|
Items in US Dollars per annum
|
HDESP
|
Beam
Pump
|
|
Production
|
$54,312
|
$39,878
|
|
Pulling Cost
|
$0
|
$4,800
|
|
Annual Repair Cost
|
$0
|
$2,400
|
|
Net
|
$36,500
|
$16,000
|
|
New installation cost
|
$10,019
|
$11,969
|
Driver to select HDESP
The operator was experiencing short
run life with beam pumps in certain wells due to problems associated with
formation sand. In a 12 month
period, the beam pump failed 6 times.
A Hydraulic Diaphragm Electric
Submersible Pump (HDESP) was selected to reduce problems associated with
produced solids. The HDESP was
installed on
December 16th,
2004, and is currently running trouble free.
Additional benefits with HDESP:
Safety
Moving parts associated with a beam
pump are eliminated and safety to personnel and wildlife is improved.
Smaller tubing is preferred with
HDESP to facilitate solids removal.
The associated weight reduction improves safety personnel handling tubulars
during work-overs. For example,
changing from 2-3/8” tubing on the beam pump installation to 1.9” tubing with
the HDESP, resulted in a 40% weight reduction.
Environment
This particular well is located in a
National Forest Area. Other
sensitive wells are near rivers, water ways and dwellings.
The HDESP is virtually silent and eliminate noise associated with gear
boxes and polish rods.
The HDESP also eliminate stuffing box
leaks as there is no polish rod.
Power
The duty cycle for the beam pump was
15 minutes on for every hour off. The
HDESP had a duty cycle of 45 minutes on for every 6 hours off.
In a 24 hour period, the HDESP consumed ½ the electricity the beam pump
did to produce the same amount of oil.
Application
Review
An operator in
Kentucky
has over 600 active wells making on average 1 BPD.
The top performing wells average 3 barrels of oil per day and have
following application profile:
Application Profile
|
Well Type
|
Stripper
Type Oil Well
|
|
Predominate Production Method
|
Beam
Pump on Duty Cycle
|
|
Well Profile
|
Vertical
|
|
Average Oil Production
|
3
BPD
|
|
Average Water Production
|
15
BPD
|
|
Power Supply
|
3
phase, 480V or single phase 220V
|
|
Surface Controls
|
Across
the line starter/controller
|
|
Perforations
|
30
feet open hole
|
|
Tubing Size
|
1.9”
OD, 2.75lb/ft,1.6” ID
|
|
Casing Size
|
4.5”
OD, 10.5lb/ft, 4.1” ID
|
|
Pump Set Depth
|
1,200
feet
|
|
BHT
|
68o
F
|
Production
improvement
Over a 12 month period, there was 97
days of downtime associated with waiting on pulling unit after the beam pump
failed.
|
Total downtime over a 12 month period
|
97
days
|
|
Average Daily Oil Production (Barrel
of Oil per day)
|
3.1
|
|
Oil Price ($/BBL) net of royalties
and taxes
|
$48
|
|
Cost of Lost Production per failure
|
$14,433
|
Pulling
Cost
|
Pulling Cost per workover
|
$800
|
|
Failures over a 12 month period with
Beam Pumps in subject well
|
6
|
|
Annual cost
|
$4,800
|
Repair
Cost
The average repair for a rod pump in
this area is $400. The annual
repair cost associated with beam pumps on this well was $2,400 (6 x $400)
New
Installation (for a 1200’ installation)
|
Item
|
Beam
Pump
|
HDESP
|
|
Foundation
|
$500
|
N.A.
|
|
Pump Jack
|
$7,500
|
N.A.
|
|
Surface Motor
|
$450
|
N.A.
|
|
String of Rods
|
$1,380
|
N.A.
|
|
Rod pump
|
$700
|
N.A.
|
|
Controller/Panel
|
$600
|
$939
|
|
HDESP
|
N.A.
|
$8,000
|
|
Cable
|
N.A.
|
$1,080
|
|
Total
|
$11,130
|
$10,019
|
GOR
Reported GORs of 2,000 scf/bbl in
this area make gas anchors a must for beam pumps to eliminate gas locking.
The HDESP was run without any type of gas separator and has never gas
locked.
|
