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Services Internal Pressure Testing
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Connection Internal Testing
What is it?
How does it work?
What are the advantages?
How is this system safe? |
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What is it?
Connection internal testing allows our operators to pressure test
the casing in the
same way as to simulate the similar direction of pressures applied
during fracing, injection, and production. When testing
casing from 177.8mm (7") - 273.1mm (11 3/4") you get an entire
test of the connection area.
How Does it Work?
Connection internal testing utilizes a bar tool. The bar tool used by Hydrotestors operates with one
upper and one lower expandable packer element.
This bar tool uses two pressure sources; one to activate the packer elements, and
one to supply the test port pressure.
This bar tool is made to test one connection at a time. It is connected via a rope socket to the wireline
on the testing unit throughout the complete testing operation. The tool is lowered into the casing for
each test and is removed between tests. The fluid inside the the tool is retained throughout the testing
operation. The length of a test is about 2 minutes from the time the tool is lowered in the casing,
the test is completed and the tool is pulled out.
What are the advantages?
The principle advantage of internal pressure testing is that it
duplicates the well conditions of fluid or gas flowing inside
the tubular under pressure.Hydrotestors connection internal testing bar tool has been designed with a range of outside diameters that
minimize the the volume of fluid in the test area while still maintaining a safe margin for tool clearance
in the tubular. This feature is very beneficial as it minimizes pumping time to achieve the desired
pressure, and also allows for very high resolution and therefore results in the rapid detection of
minor leaks. This combined with Hydrotestors PRS (Pressure Recording System) Data Collection Program
ensures more accurate pressure reading.
The two pressure sources is an important feature as it allows our operator to establish a seal with the
packer elements prior to applying the pressure to the tubular. This advantage becomes very
apparent when pressure testing severly corroded casing, or casing with appreciable scale build-up.
This could also be a cost effective program to help prolong the life of the casing.
The connection internal testing bar tool can also drift the tubular and connection after make-up ensuring
that the tubular has not been crimped and the connection is not pinned in from over torque.
This system will also test most bottom hole equipment. Packers, Seal Assemblies, Nipples, also
right up to and including a Tubing Hanger. In some cases this sytem can do a casing test, and
be used to test Blow-out Preventers.
How is this system safe?
Hydrotestors connection internal testing bar tools have a working pressure rating
of 70 MPA or 10,150 PSI. With a 3-1 safety factor for testing 7"( 177.8mm),
7 5/8"( 193.7mm), 8 5/8"( 219.1mm), 9 5/8" (244.5mm),
and 11 3/4"( 273.1mm).
This is a much safer operation
than other testing alternatives are there is less equipment and personnel on
the rig floor while running pipe. Reason is because the testing unit can
be located 100 feet from the wellbore and is connected to the testing tools
via two high pressure lines with a stinger on the end to direct fluid. The operator
controls everything from an operators cab on the testing unit where all guages
and controls are at their fingertips.
Also while using the connection internal testing bar tool most testing is done
below the rig floor helping to keep the majority of the pressure away from the
people on the rig floor.
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Full Body Internal Testing
What is it?
How does it work?
What are the advantages?
How is this system safe? |
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What is it?
Full body internal testing allows our operators to pressure test
the tubing and casing in the
same way as to simulate the similar direction of pressures applied
during fracing, injection, and production.When testing tubing
up to 114.3mm (4 1/2") and casing up to 177.8mm (7") you get an entire test of the connection as well as the complete pipe body.
How Does it Work?
Full body internal testing utilizes a bar tool. The bar tool used by Hydrotestors
operates with two upper and two lower expandable packer elements.
This bar tool uses two pressure sources; one to activate the packer elements, and
one to supply the test port pressure.
The bar tool can be made to test one joint at a time, can be made to test two joints at a
time, and in some special cases to test three joints at a time. What are the advantages?
The principle advantage of internal pressure testing is that it
duplicates the well conditions of fluid or gas flowing inside the tubular under
pressure.Hydrotestors internal testing bar tool has been designed with
a range of outside diameters that minimize the the volume of fluid in the test
area while still maintaining a safe margin for tool clearance in the tubular.
This feature is very beneficial as it minimizes pumping time to achieve the desired
pressure, and also allows for very high resolution and therefore results in the
rapid detection of minor leaks. This combined with Hydrotestors PRS (Pressure
Recording System) Data Collection Program ensures more accurate pressure reading.
Having two pressure sources is an important feature as it allows our operator
to establish a seal with the packer elements prior to applying the pressure to
the tubular. This advantage becomes very apparent when pressure testing severly
rod cut, corroded, or tubing with appreciable scale build-up. This could also
be a cost effective program to help prolong the life of the tubing or casing.
The internal testing bar tool can also drift the tubular and connection after
make-up below slips ensuring that the tubular has not been crimped and the connection
is not pinned in from over torque. Special tools have been designed to be able
to test plastic coated tubulars and fiberglass while minimizing damage to the
coatings.
This system will also test most bottom hole equipment. Packers, seal assemblies,
anchors, nipples, injection mandrils. Right up to and including a wellhead, frachead,
tubing hanger. In some cases this system can test Lubricators, String Tests,
Casing Tests, Blow-out Preventers. How is this system safe?
Hydrotestors internal testing bar tools have a working pressure
rating of 104 MPA or 15,000 PSI. With a 3-1 safety factor for testing
2 3/8"( 60.3mm), 2 7/8" (73mm), 3 1/2"( 88.9mm), and 4 1/2" (114.3mm).
This is a much safer operation than other testing alternatives are there is less
equipment and personnel on the rig floor while running pipe. Reason is
because the testing unit can be located 100 feet from the wellbore and is connected
to the testing tools via two high pressure lines with a stinger on the end to
direct fluid. The operator controls everything from an operators cab on the testing
unit where all guages and controls are at their fingertips.
Also while using the internal testing bar tool most testing is done below the
rig floor helping to keep the majority of the pressure away from the personnel
on the rig floor. Top |
Hydrotestors PRS Data Collection Program
What is it?
How does it work?
What are the advantages? |
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What is it?
Hydrotestors PRS Data Collection Program is used in conjunction
with either the connection internal
testing or the full body internal testing.
This system utilizes real time display to show pressure versus
time. Depending on the length of the
individual tests a 1, 5, or 10 second data collection will be used
to chart the information.
How Does it Work?
Information is read through a pressure transducer into the PRS
Unit. This information is then displayed
on a touch screen in the operator's cab located in the testing
unit for the operator to see the
pressure and time of each test. Differential pressure calculations
show the operator how much of
a pressure change there was over time for each test. The PRS Data
Collection Program
has automatic or manual recording capabilities. This information
can then be displayed in an easy to
understand graph. Click here to see samples.
What are the advantages?
While a standard 6" Compound Pressure Gauge is rated at
+/- 5%, so at 70,000 KPA this guage
could be reading somewhere from 66,500 KPA - 73,500 KPA.
Hydrotestors PRS Data Collection Program is accurate within 0.01%
meaning at 70,000 KPA the
PRS will be reading somewhere from 69,993 - 70,007 KPA.
Testing pressures as well as any leaks will be more precise, and
easier to find while utilizing this system.
Individual tests can be done from 5 seconds to as much as 1 hour
allowing for a broad spectrum of
testing times, this time frame can also be changed from one test
to the next.
The differential pressure calculations allow the operator to account
for a pattern of pressure drops
while testing, for example temperature and downhole fluids can
fluctuate testing results.
The operator can keep track of a pattern of pressure results depending
on each situation and determine
if there is an actual leak or not.
Customers can access the finished testing results for a specific
test or an entire testing job by
downloading or viewing via our secure website www.hydrotestors.com
All customers can request there own username and password to be
able to get this information.
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Custom Machining
Safety.
Hydrotestors machine shop and welding facility are Health and Safety
(C.O.R.) Certified.
Quality.
Hydrotestors machine shop and welding facility are ISO 9001:2000
Certified |
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Specializing In:
- General Machining and Welding
- Custom Design
- Power Thread Washers
- Stab-In / Break-Out Guides
- Nylon Drifts
- Driveshafts
- Sprockets and Hubs
- Shafts / Keyways
- Flywheels / Brake Drums / Brake Discs
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Lathes up to 6" Throat, Swing-over bed 19", Swing-over
gap 36", 80" bed length. |
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Milling machine, welding & Machine Shop Facility |
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