1. The document discusses methods to reduce lost oil production from progressive cavity pumps (PCPs) during power disturbances, which cause pumps to backspin. 2. It describes testing of a new variable speed drive (VSD) controller by Unico Inc. that allows PCPs to ride through momentary power losses and phase losses rather than tripping, by field weakening the motor or reducing motor speed to safe levels. 3. The controller was successfully tested in Venezuela's Boscan oil field on PCP wells, reducing estimated daily production losses from power disturbances from 17-25% to negligible amounts.

1. 1
Index Terms— Backspin, Boscan, Controllers, Cavity, Loss
Phase, Progressive, Pump, Variable.
I. NOMENCLATURE
PCP: Progressive Cavity Pump
VSD: Variable Speed Drive
DFL: Dynamic fluid level from surface (Ft)
SFL: Static fluid level from surface (Ft)
Ptbg: Tubing fluid pressure (Psi)
Pcsg: Casing gas flow pressure (Psi)
GR: Gear ratio
Terry Ernst is with UNICO Inc., Venezuela. Ernst.terry@unicoven.com)
Frank Santiago is with UNICO Inc., Venezuela
(e-mail: frank.santiago@ unicoven.com)
Harry Schulz is with Unico, Inc., Franksville, WI, U.S.A
(e-mail schulzha @unicous.com)
Frank Bustamante is with Baker Energy, Venezuela
(e-mail: buef@chevron.com)
Juan Biternas is with Chevron , Venezuela(e-mail: bite@ chevron.com)
Jesus Borjas is with Chevron , Venezuela (e-mail: jssb@ chevron.com)
Benigno Montilla is with R&M company, Venezuela
Jesus Molina is with Baker Energy, Venezuela
(e-mail: jmze@ chevron.com)
John Bernard is with EpSolutions, Venezuela
(e-mail: john.bernard@ep-solutions.com)
BPD: Barrels per day (Bls/d)
GOR: Gas oil ratio (scf/d)
Ft-lb: Unit for torque (foot x pound)
CVX: Chevron Texaco oil Company
II. INTRODUCTION
All wells producing with PCP system take the shape of
communicated tubes 1
with different pressure at the same
depth. When the well VSD is turned off the fluid level in both
tubing and annulus space try to go to the same horizontal line
or the static fluid level. This also occurs if the VSD trips due
to an incoming power disturbance.
Power dips (brownouts), phase loss, and power outages
(blackouts) can cause a significant loss in progressive cavity
pump (PCP) production. Loss of control of the PCP due to
power problems causes the pump to backspin while fluid
drains from the production tubing. Backspin times can last
from minutes to hours depending on the specifics of the pump
application. Deep wells will generally have longer backspin
times than shallow wells or wells operating with high casing
fluid levels.
The actual loss of production time could be as much as
twice the backspin time since fluid drained from the tubing
must be pumped back to the surface.
III. THE BACK SPIN PROBLEM
A. Backspin in the Boscan Wells
PCP Wells in the north of Boscan field, use VSDs to
control the induction motor at the surface. The standard VSD
is very susceptible to momentary electrical power
interruptions, even those shorter than 0.600 seconds. In the
Boscan field the typical power interruption lasts 0.300
seconds. During momentary interruptions of the electrical
power due to temporary faults to ground, power dip or power
outages, or phase loss in the distribution network, the motor
turns off. When the motor turns off the weight of the column
of crude causes the motor to turn in the opposite direction.
The motor will spin in the reverse direction until all the oil has
fallen back down the production tube and the oil level in the
production tube and the well are equal. This phenomenon is
known as “back spin”.
Fig. 1 below shows the typical PCP system used in the
CVX Boscan field.
Fig. 2 shows the backspin effect when power goes out.
There are four phases: In phase I the well is producing under
Back Spin Control in Progressive
Cavity Pump for Oil Well
Terry Ernst , Frank Santiago, Harry Schulz, Frank Bustamante, Juan Biternas , Jesus Borjas,
Benigno Montilla, Jesus Molina, and John Bernard
1-4244-0288-3/06/$20.00 ©2006 IEEE
2006 IEEE PES Transmission and Distribution Conference and Exposition Latin America, Venezuela

2. 2
normal conditions at pump speed (V1) and torque (Td). In
phase II the motor turns off due to a power disturbance. Fluid
flow goes to zero (0). Torque in the rod starts to release and
fluid in the tubing starts to drains down.
Fig. 1. - Typical PCP well in CVX Boscan Field
This causes the rod string and pcp pump to begin turning
in reverse at V2. The rod string continues to turn reverse until
fluid in the tubing is down to the same level as fluid in the
well. When the rod string comes to a stop and power is
restored and the VSD may be restarted.
Fig. 2.- Example of Backspin effect
Fig. 3 shows how the communicated tubes theory is used to
understand the backspin effect. When the well is producing
there is a higher pressure at P2 than at P1. When the VSD
turns off the fluid level in the tubing goes down and fluid
level in the annulus space go up to try to balance equal
pressure in any horizontal reference. In a PCP well while this
effect is occurring the rod string is turning in reverse.
B. Back spin Consequences
Frequent power outages can significantly diminish PCP
production. Completely uncontrolled backspin can also create
excess speed that is unsafe to personnel and/or damaging to
equipment. In this case a hydraulic brake may be used to limit
the reverse speed. The backspin effect can also unscrew the
rod string causing additional loss of production and expenses.
Fig. 3.- Backspin effect as a communicated tubes theory 1 .
C. Lost oil production due the Backspin effect
The backspin time in oil wells is a function of pump depth,
working pump torque, fluid level above the pump, fluid
viscosity, fluid density, type of rod string (Continuous, API,
fiber glass, etc), tubing and casing diameter, etc. In the Boscan
Field this time is between 4 and 6 hours. One power
disturbance per day would cause a daily loss of production of
17% to 25%.
IV. METHODOLOGY TO SOLVE THE PROBLEM
A. Applied Methodology
The VSD manufacturer, Unico Inc., started investigating
ways to reduce lost production in PCP systems due to power
problems in 2003. This work resulted in several patent
applications under the title “Method and System for
Improving Pump Efficiency and Productivity Under Power
Disturbance Conditions”. Lab tests looked promising. In May
2005, Unico, Inc. gathered input from the customer (CVX),
field service engineers (eP Solutions), and PCP operator in the
Boscan field (R&M Energy systems) to refine their ideas.
Unico Inc. asked CVX about conducting field tests of the new
technology. Permission was obtained to conduct tests in one
of the problematic wells. The software was first tested in the
well BN-793. Problems with DC Bus Overvoltage faults
occurred. Test results were sent to Unico Inc in Wisconsin,
U.S.A to be analyzed by the Engineering department. The
decision was made to add a dynamic braking resistor and
associated controls to prevent overvoltage faults. The
software was further refined and improved.
After about a month Unico Inc. was ready for further field
tests. Tests were resumed at well BN-793 June, 2005. The
phase loss and backspin controller were successfully tested.
Plans were made to install the new software and dynamic
braking resistor and associated controls in 5 wells for
thorough long term testing. Tests at all 5 wells were
successful.

3. 3
B. Theory Solution
VSDs rectify the AC line voltage into a DC bus voltage.
The DC bus voltage is converted by output switching devices
into the variable frequency voltage used to control the motor.
In addition the DC bus voltage is used to power the bus
switched power supply that creates the low voltage supplies
needed to power the controls. The DC bus voltage is applied
to bus capacitors that store electrical input energy for transfer
to the output. The energy stored in the bus capacitors is a
function of their capacitance and the square of the applied
voltage.
1) Brown Out Controller
Normally a VSD will trip with an Under Voltage fault if
the incoming voltage is 15- 25% low. At lower voltages the
power supplies may shut down and motor performance could
be negatively affected. The VSD manufacturer (Unico Inc.)
modified their bus switched power supply to operate at 50%
of nominal bus voltage. A brown out controller was added to
the software to field weaken the motor based on bus voltage
and motor speed. This allows operation at 56% of nominal
bus voltage. At 56% bus voltage a 1760 rpm is field weakened
at 986 rpm instead of 1760 rpm for example. This maintains
proper motor performance. Under heavy load at reduced
incoming voltage the motor slows down while riding the
current or torque limits. Under light loads at reduced
incoming voltage the drive may be able to maintain speed.
The motor automatically runs as fast as possible with the
reduced incoming voltage or at the requested speed. When the
voltage is restored the drive goes back to running normally.
2) Phase Loss Controller
Normally a VSD will trip with a Phase Loss fault if power
is lost at one of the three phase power inputs. Running with a
phase loss causes the ripple current in the bus capacitors to go
up dramatically. Continued operation at high capacitor ripple
current can lead to failure or reduced capacitor life. Also with
a phase loss, the incoming current in the two live inputs goes
up dramatically. This can lead to blown fuses or failure of the
rectifier bridge. Unico Inc. added a phase loss controller to its
VSD software to reduce motor speed instead of tripping the
drive. The phase loss controller monitors the DC bus
capacitor ripple current. The motor speed is reduced to
maintain an acceptable ripple current. If the ripple current
level is acceptable the incoming current is reasonable. The
motor automatically runs as fast as possible with the phase
loss or at the requested speed. When the phase is restored the
drive goes back to running normally.
3) Backspin Controller
Normal bus capacitors will provide enough energy storage
to ride through power outages of about 0.05 seconds. Power
outages of greater than about 0.05 seconds would result in an
Under Voltage fault. In order to avoid backspin of the rod
Unico Inc. added a backspin controller to its VSD software.
When the backspin controller detects a power outage the
motor is decelerated. The motor then accelerates in the
reverse direction to a speed known to regenerate more than
enough power to keep the VSD running.
When the motor is running in reverse, torque is applied in
the forward direction to hold the tension in the rod and thus
hold up the column of fluid. With torque and speed in
opposite directions the induction motor acts like a generator.
The energy in the tension in the rod and the column of fluid is
slowly released as the PCP turns slowly backward. The motor
regenerates just enough power to keep the drive running.
When the drive is first running reverse it regenerates some
what more energy then needed. This excess energy is
absorbed by the dynamic braking resistor. The dynamic
braking resistor is turned on and off as needed to prevent an
Over Voltage fault. With in a short period of time the reverse
speed is reduced to where the dynamic braking resistor is no
longer needed. Gradually the motor speed is slowed down
further to reduce the bus voltage. The motor is sped up as
needed if the bus voltage gets too low.
When the bus voltage is low enough then the drive can
detect if the incoming voltage is restored. When the incoming
voltage is restored the drive switches back to running forward
and resumes normal production.
If the incoming voltage in not restored, at some point the
tension in the rod and energy in the fluid will prove to be
insufficient to maintain bus voltage. Depending on well
specifics this may take from a few minutes to 20 minutes or
more. When this happens the drive will trip with an Under
Voltage fault. Since the energy in the rod and fluid column is
reduced the rod backspin time after the drive trips is reduced.
The backspin controller provides a cost effective method of
eliminating virtually all production loss except for the actual
power outage period.
V. FIELD RESULTS
A. Selection of Wells for Field Testing.
Six wells were selected for the field testing; they are BN-
793, BN-559, BN-124, BN-762, BN-781, and BN-186.
Each one has a particular bottomhole and surface condition.
They were selected taking in account the High pump torque,
High GOR, High pump depth, High water cut, low pump
intake pressure, high pump intake pressure.
Fig. 4.- Well BN-793 was the first one tested using the Backspin controller

4. 4
software.
B. How Was carried out the Field Test
This setup and test procedure was carried out in each well.
Unico Inc, eP Solution, R&M Energy, Baker Energy, and
CVX were represented. The following procedures were
followed:
b.1.- Prepare work plan and Procedure taking in account
HSE Rules.
b.2.- Up load well data from the VSD
b.3.- Turn off the well (Using power off breaker)
b.4.- Measure the backspin time
b.5.- Modify hardware 2
to install dynamic braking resistor
(see Fig. 5) and associated controls according to the power
capacity of VSD. Install board with modified bus switching
power supply.
b.6.- Install new Software, including brown out, phase loss,
and backspin controllers
b.7.- Upload well parameters into the new software
b.8.- Run AC Tune test to calibrate the drive to the motor
b.9.- Get data from bottomhole and surface sensors.
b.10.- Start up the well and wait until fluid is flowing to the
surface
b.11.- Stop the drive. The drive will decelerate and reverse
direction. As the rod turns slow backward the drive is
recording the speeds needed to regenerate adequate power at
different torque levels and the time for the motor to get to
speed in reverse. When the recordings are done start the drive
and it will return to running forward.
b.12.- Wait for fluid to start flowing to the surface. Then
turn off the drive incoming power. The drive will decelerate
and reverse direction. As the rod turns slow backward the
drive recalculates the time for the motor to get to unwind
speed. When the calculation is done power can be restored.
The drive will return to running forward.
b.13.- To record and graph Pump Speed, Motor Torque,
and Bus Voltage use UEDIT software.
b.14.- While recording data with UEDIT turn off power.
The backspin controller runs the motor slowly in reverse.
Restore power. The motor returns to running forward.
b.15.- Turn off power to drive. The motor switches to
running reverse. With power off removed one of the 3 phase
high voltage fuses. Then power was turned back on. The
motor returns to running forward but at a reduced speed
because of the missing phase. Then turned off the power and
the motor switches to running reverse. Data was recorded
with UEDIT . This test was not run on all wells.
Fig. 5.- Field Technicians installing DC Resistor bank set.
C. Preliminary Results
Using the procedure described in the above paragraph the
work team group carried out the field test simulating a power
loss and phase loss. Table 1 shows well parameters for each
well that was tested. Although the well parameters differ the
same backspin controller software was used successfully in all
wells.
TABLE I
WELL CONDITIONS BEFORE FIELD TESTING.
Parameter / Well BN-
559
BN-
124
BN-
186
BN-
762
BN-
781
BN-
793
Motor speed (Rpm) 1175 1222 376 376 1175 1316
Rod speed (Rpm) 250 260 80 80 250 180
Flow Line pressure (Psi) 110 160 160 160 70 75
Motor current (Amp) 57 47 48 44 24 47
Casing gas pressure (Psi) 0 0 0 0 0 0
Flow line Temperature (ºF) 112 102 90 90 125 128
Tubing Fluid level from
surface(Ft)
0 0 0 0 0 0
Annulus gas vent condition Open Open Open Open Open Open
Tubing fluid density (Psi/ft) 0.435 0.433 0.433 0.434 0.446 0.438
Check valve in the line flow ? SI* SI* SI* SI* SI* SI*
Pump intake pressure (Psi) 918 538 660 382 2207 1423
Annulus fluid level from the
surface (Ft)
5794 6803 6236 5855 797 4260
Fluid level above the pump (Ft) 2481 1454 1784 1032 5965 3846
Bottomhole temperature (ºF) 182 199 187 165 168 181
Is there any Check in the
bottomhole?
NO NO NO NO NO NO
Sand problem? NO NO NO NO NO NO
Obstruct pump problem? NO NO NO NO NO NO
In the Fig. 6 the upper line is the BUS Voltage, the second
line (PL1) is the motor torque in ft-lb, the third line is the
pump speed, and the lower line is the motor torque in %. At
P1, the PCP pump was running at 280 Rpm, motor torque was
56% (154 ft-lb), and the bus voltage was 610 Volt DC. At P2
the electrical power was turned off. Pump speed went to -28
Rpm, rod torque to about 26% (79 ft-lb), and Bus voltage
increased to 764 Volt. From P2 to P3 the backspin controller
runs the motor reverse; at some point power is restored ; from
P3 to P4 the rod is accelerated back to 280 Rpm. Note that
the motor runs backward about 15 seconds. Note: Parameters
values were taken from source data.
In the Fig. 7 shows a test of the phase loss controller and
the backspin controller. At P1, the well BN-793 was running
at 280 Rpm. At P2 the power was turned off at the front
breaker and the motor reversed direction. Then the Electrical
field operator took out one high voltage fuse. Then the front
breaker was turned back on. The drive returned to running

5. 5
Fig. 6.- Field test of backspin controller in well BN-793 during power loss
forward. At points P2 to P3 the drive runs at a reduced speed
of 60 Rpm because the drive is running on a single phase.
Then the front breaker was turned off again and the drive
reversed direction from P4 to P5. Note: Parameters values
were taken from source data.
Fig. 7.- Field test of phase loss controller and backspin controller in well
BN-793
Fig. 8 demonstrates the backspin controller on a different
well. At P1 well BN-559 was running a 250 Rpm under
normal conditions. Power was removed at P2. Between P2
and P3 the pump runs slowly backward. Some time between
P2 and P3 power was restored. At P3 the pump returns to
running forward. Similar field test results were found for
other tested wells BN-124, BN-762, BN-781, and BN-186.
These results can be seen in Fig.s 9 – 12.
Fig. 8- Field Test of backspin controller in well BN-559 during power loss
Fig. 9.- Field test of backspin controller in well BN-793 during power loss
Fig. 10.- Field test of backspin controller in well BN-762 during power loss
Fig. 11.- Field test of backspin controller in well BN-781 during power loss.
Fig. 12.- Field test of phase loss controller and backspin controller in well
BN-186

6. 6
D. Problems found in the field tests
Since power was turned off at the front breaker of the drive
it was not possible to measure the time the power was off, but
in most cases the power was off several seconds. In any case,
the power was off for more than the 300 msec, that is the
typical power loss time in the Boscan field.
The brown out controller although tested in the lab was not
tested in the field since there was no way to reduce the
incoming voltage.
E. Final solution
The first field tests were done with prototype software.
Final tests were done with improved software Unico Inc.
number 805-704.077 3
. Each of the 60 Hp Unico Inc. VSDs
were upgraded with the following parts: 1) 805-704.077
backspin controller software, 2) a new Gate drive module with
modified bus switching power supply and driver for the
dynamic braking transistor, 3) dynamic braking transistor, and
4) dynamic braking resistor.
F. Field Implantation
The field testing results prompted CVX Texaco to upgrade
100% of the PCP wells running in its oil field. The upgrade
plan was carried out in two stages: In the first stage 50% of
the wells were upgraded. In the second phase the rest of the
wells will be upgraded.
VI. EVALUATION UNDER REAL ELECTRICAL FAILURES
At the same time CVX was upgrading its PCP wells with
the new backspin control software, CVX was monitoring the
performance of the PCP. Fig. 9 shows the backspin controller
working during an actual power outage. Without the backspin
controller 2-7 hours of production (8-30% production loss)
would have been lost. With the backspin controller only 1.5
minutes of production was lost. Fig. 13 and 14 are two
examples of electrical power disturbances in the Boscan field.
Table II shows well BN-793 riding thorough a power
disturbance unaffected. Fig. 14 shows well BN-559 slowing
down due to a power disturbance.
SCADA and Datalogger systems are used by CVX in all of
the Boscan field.
TABLE II
MONITORING OF THE PCP WELL CONDITION AFTER INSTALL UPGRADED
SOFTWARE. THEY ARE OPERATION CONDITIONS OF THE
WELL BN-793 IN 06/28/2005
Nine additional instantaneous electrical power disturbances
were observed during this real evaluation in wells BN-793,
BN-559, BN-124, BN-762, BN-781, and BN-186. Always
the Backspin controller worked very well avoiding loss of oil
production
VII. CONCLUSIONS
The brown out, phase loss, and backspin controllers will
not prevent all production loss due to power disturbances but
would be expected to work most of the time. The controllers
have substantially reduced production loss to power
disturbances in PCP Wells running in the Boscan field
managed by CVX. Using the Backspin Controller, backspin
time was reduced from as much as 6 hours to about 1 min,
potentially saving 25% of daily oil production in each well
every time there is a power disturbance.
The phase loss controller allows the drive to keep running
at the same or reduced speed on a phase loss. This could
potentially save a significant amount of production.
The brown out, phase loss, and backspin controllers
should work in any PCP well. This was shown by testing in
several wells in the Boscan field with a wide range of
characteristics.
The benefits of the brown out, phase loss, and backspin
controllers can be obtained by upgrading old drives in VSDs
that include the appropriate software and hardware.
Date&
Time
Intake
Pressure
(PSI)
Intake
Temperature
(F) RPM Torque
I Motor
(A)
Vol-
tage
(V)
Fre-
cuency
(Hz)
28/06/2005
20:52:25
1346.41101 181.29274 280 723.69 48.82 414 66
28/06/2005
20:52:37 1346.41101 181.29274 280 723.69 49.01 429 66
28/06/2005
20:52:49
1346.41101 181.29274 280 723.69 49.01 444 66
28/06/2005
20:53:01
1358.22180 181.01958 280 611.39 49.14 459 66
28/06/2005
20:53:13
1355.75427 181.08574 280 648.82 49.23 474 66
28/06/2005
20:53:25
1354.91711 181.08151 280 623.87 49.33 489 66
28/06/2005
20:53:37
1353.81580 181.26242 280 636.35 49.42 504 66
28/06/2005
20:53:49 1352.87634 181.18211 280 648.82 49.52 519 66
28/06/2005
20:54:01
1352.04749 181.22221 280 661.3 49.61 534 66
28/06/2005
20:54:13
1351.44248 181.19794 280 673.78 49.71 549 66
28/06/2005
20:54:25 1350.18787 181.16808 280 723.69 49.8 435 66
28/06/2005
20:54:37
1349.58875 181.17857 280 723.69 49.19 439 66
28/06/2005
20:54:49
1349.63147 181.17484 280 723.69 48.92 421 66
28/06/2005
20:55:01
1349.75574 181.12221 280 723.69 49.09 410 66
28/06/2005
20:55:13
1349.40759 181.16731 280 723.69 48.55 443 66
28/06/2005
20:55:25
1349.66492 181.13686 280 723.69 48.47 448 66
VIII. ACKNOWLEDGMENT
The authors gratefully acknowledge the contributions of:
Unico Inc. – United States
Unico Inc. – Venezuela Operations
Chevron Texaco
eP Solutions
R&M Energy Solutions
IX. REFERENCES
[1] CRAFT, B. y Hawkins, M.. Ingeniería Aplicada de Yacimientos
Petrolíferos. (Título Original: Applied Petroleum Engineering, Versión
español: H. Vásquez), Editorial Tecnos, Madrid, 1968. Section 3.40.
[2]Unico Inc, Guide to installation, troubleshooting and maintenance,
Wisconsin, USA, 2005.
[3]Unico Inc, User’s Guide to Start-Up, and Operation (Application Software
Manual 805-704.077), Wisconsin, USA, 2005.
[4]Unico Inc, Drive Control Options to Optimize PCP Production During
Power Disturbances, Wisconsin, USA, 2005.

7. 7
X. BIOGRAPHIES
Terry Ernst was born Jan. 19, 1953 in Racine,
Wisconsin USA. He graduated from the Hertzing
Institute in 1974 as Computer System Analyst and
served in the United States Marine Corps, as an
Aviation Radar Technician.
He started his professional career with Unico in 1977.
He has held several positions with Unico. Present
position at Unico is South American General
Manager. He has been living in Venezuela since 1995
working in the Oil Industry on advancing oil
production using new Technologies.
Harry Schulz was born Dec. 21, 1955 in Racine
Wisconsin. He graduated from the University of
Wisconsin Parkside in 1979 with a Bachelor’s of
Applied Science degree. He started his
professional career with Unico in 1979. He has
held several positions with Unico in hardware and
software development.
He is a co-inventor of a patented Fault Detection
System for use in an Electronic Feed Transfer
System. He has worked on variable speed drives for the Oil Industry since
1988. He is co-inventor of 3 patents applied for to improve positive cavity
pump productivity. His special fields of interest are motor control and
application software.
Frank Bustamante was born in Tovar, Merida,
Venezuela. He is graduated as Electrical Engineer in
“Universidad de Los Andes” in 1989. In 1998, He
obtained a Master Degree in power System at
UNEXPO, Venezuela. From 1989 has been worked in
Oil & Gas Industrial Companies as a Maintenance and
Advisor Engineer. He had written some technical
documents and paper related to Surges and Lightning,
and had been participated an some congress, seminars
and Forums as a presenter. Actually he works for
Chevron since 2005.
Frank Santiago was born in Trujillo, Venezuela, in
1969. In 1994, He Graduated as Computer
Programmer Technician from “Antonio Jose de
Sucre” University. He started his career at Corpoven
Oil Company. He started his professional career with
Unico in 1995. His present position at Unico is
Technical Supervisor for Unico West in Western
Venezuela, applying the development of the new
technologies in the methods of artificial lift in BES,
BCP and SRP systems.
Juan Biternas was born in CARACAS, Venezuela.
He is graduated as Electrical Engineer in “Universidad
RAFEL URDANETA” in 1989. In 1993, He has
graduated as mechanical Eng at EMP, Greece. From
1989 has been working in Oil, Textile, petrochemicals
& Gas Industrial Companies as a Design,
Construction, Maintenance, and Advisor Engineer. He
has participated in several congresses, seminars and
Forums as a presenter. Actually he works for Chevron,
Campo Boscan since 2001.
Jesús Borjas was born in Cabimas, Zulia Venezuela.
He is graduated as Electrical Engineer in “Universidad
Rafael Urdaneta” in 1996. Since 1989 he has been
working in the Oil Industry holding positions of
increasing responsibility in the planning, design,
installation, commissioning, maintenance, automation
and development of Electrical Power Systems, Turbo
machinery and High Voltage Motor Controls systems,
combined with a solid background in the operation and
maintenance of 230, 115, 34.5, 12.4 and 6.9 kV Power
Sub-stations and Transmission and Distribution Power Lines. Actually he works
for Chevron since 2003
Jesus Molina was born in Queniquea, Tachira,
Venezuela in 1971. He graduated as Power
Electonic Technician in I.U.T. “Region los Andes”
in 1995, in 2001 graduate as Electric Engineer from
“Universidad Fermin Toro”. He started his
professional career with “Enelven” a western pubic
electric power utility in 2001. In 2002 integrate the
new automaton Weatherford division - ePsolutions
an oilfield optimization company. He has several
positions with ePsolutions. Present position at ePsolutions is Western
Venezuela Services Supervisor. He has worked on electric power protection
systems also he has worked on variable speed drives developing new
technologies with automation equipments.
John Bernard was born in San Fernando, Trinidad,
W.I. in 1963. He graduated from the University of
Texas at Austin in 1986 with a B.B.A. in International
Business. He began his career in the oilfield in 1990
as an Order Control Specialist for Baker Oil Tools in
Houston, Texas. In 1994 thru 1997 he worked as an
MWD Field Specialist for Baker Hughes Inteq
covering Texas, Louisiana, and the Gulf of Mexico.
At the end of 1997 he returned to Baker Oil Tools as
an Applications Specialist were he worked until
October of 2001. At that time he transferred to Anaco, Venezuela were he
took the position of Multinationals Sales Coordinator for Baker Oil Tools. In
August of 2004 he joined eP Solutions as Western Venezuela Operations
Manager.