Introduction to Propipe Limited

Transcription

Introduction to Propipe Limited
Propipe manufactures and supplies a wide range of pipeline pigs and pipeline plugs to leading offshore
and onshore companies throughout the world. Our pig-supply scope covers all types of pipeline pigs;
foam pigs, disc pigs, cup pigs and on to more complex articulated and multi-diameter designs, capable
of running line lengths in excess of 700 km.
Since our launch in 1998, Propipe has achieved phenomenal year-on-year growth.
Propipe is designed to meet specific requirements of the pipeline.
Every pig from
Designs have been developed, tested and field-proven in some of the most difficult applications known
for pigs: Multi-Diameter – Propipe has extensive experience in the use of dual and multi-diameter pigs. As
well as common sizes such as 8” x 10” and 10” x 14”, Propipe has pigs that work in size range such as
26” x 20”, 24” x 20” and 22” x 18”.
Long Run – The yard-stick used to measure the performance of a pig manufacturer. Using only the
highest quality polyurethane wear parts, Propipe has supplied pigs for many large projects with long
trunk lines. Project such as Gulfstream in the Gulf of Mexico (36” x 450 miles), Nam Con Son in
Vietnam (26” x 230 miles) and West Natuna in Indonesia (26” x 250 miles) have all been successfully
completed.
Articulated – With the ever increasing need to tie-in marginal fields to one main trunkline, wye
connections are becoming common.
Articulated pigs offer safe solutions to pass through
wyes, whilst still negotiating tight radius bends. Propipe
has several proven joint designs and has used these on
sizes from 6” up to 48”.
Propipe Limited, Unit 2, Queens Meadow Business Park, Hartlepool, TS25 5TE
Tel: +44 (0)1429 1429 872927, Fax: +44 (0)1429 872206, Email: groupsales@propipe.co.uk, www.propipe.co.uk
Facilities
• Factory:- 1700m² manufacturing space & 8000m² external pig testing facility (with new 500m²
fabrication facility under construction for 2013)
Propipe Ltd
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24 hour manufacturing capability
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Foam pigs from 0.25” to 72” diameter
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Disc pigs 4” to 60” diameter
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Cup pigs from 6” to 48” diameter
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Pipeline plugs and testing equipment
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In-house Polyurethane manufacture
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Piggability Testing
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Full machining and welding facilities
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Hydrotesting
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CAD with 3D modelling
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Finite element analysis
Piggability Testing
3D CAD & Analysis Facilities
Foam Pigs
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1/4” to 72” diameters
Available in densities 2lb/cu. ft up to 22lb/cu. ft
Supplied bare, spiral wound, criss-cross or fully coated
Wire brushes available in mild steel, stainless steel, nylon and carbide coated
Optional towing eyes, jetting ports, pinger cavities, gauge plates, magnets or
hardened studs
• Chemical resistant coatings
• Bi-directional capabilities
Disc Pigs
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Dual-diameter
Multi diameter
Check valve passage
Articulated
Magnetic
Wye passing
Sampling
Pressure relief
HD Sweeping
Scraping
Brushing
Jetting
Pipeline Plugs & Testers
• Compression Plugs
• Grip tight plugs
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Welding Pigs
Flange Weld Testers
Internal Joint Testers
Inflatable Stoppers
Pipeline Recovery Tools
J-Tube Plugs
Heat Exchanger Plugs
Subsea Plugs (Diver or ROV) Operated
Pipe Abandonment Plugs
BI-DIRECTIONAL DISC PIG SPECIFICATION
Application
Propipe Bi-Di pigs are used for a wide variety of applications, such as for flooding and
dewatering, as well as cleaning and gauging operations.
Pig configurations can also be modified to run a dual diameter and multi-diameter pipelines as
well as through difficult features such as Wyes, Unbarred Tees and Swing Check Valves
Propipe has a reputation for high quality, reliability and expertise and excels in pig design for
difficult pipelines
General Information
Various optional extras are available, some of which are listed below:Cleaning Brushes
Dewaxing / Descaling Pads
Gauging Plates
Locating and Tracking Device
Long Run Support / Guide Discs
Support Wheels
Jetting Heads
Magnet Packs
Size range
All sizes from 3” to 72”
Number of Discs
Typically, 4 Sealing Discs, 2 Support / Guide Discs
Bore Passing
Up to 10% bore restrictions (greater with changes in disc
configuration)
Minimum Bend Radius
3D minimum (1.5D specials available)
Materials
Metallic parts – Carbon Steel / Stainless Steel / Aluminium
Pigging Discs – High Grade Polyurethane Elastomer
COMPLETED PROJECT DETAIL
Project Name
Gulfstream Offshore pipeline project
End Customer
Gulfstream Operating Company
Project Description
Propipe supplied 36” articulated pigs for pre-commissioning and commissioning the Gulfstream offshore
pipeline in 2002.
The pigs were developed for flooding, cleaning, drying, gauging and commissioning operations for the 36”
offshore pipeline. The dry uncoated pipeline runs for more than 700 km and connects Alabama, Mobile bay
to Florida, Tampa Bay. As well as the long distance and uncoated pipe, the pigs were also designed to cope
with large changes in diameter due to wall thickness changes throughout the pipe length.
The Gulfstream pipeline is the largest pipeline in the Gulf of Mexico. It is also the first new natural gas
transportation system to serve Florida in more than 40 years. The system is expected to supply Florida with
approximately 1.1 billion cubic feet of natural gas per day.
Bi-Di Pig Design – Options for multi-diameter pipelines
A conventional bi-directional pig has guide discs sized below the minimum pipe internal
diameter (ID) (typically 99%) and sealing discs sized above the maximum ID (typically
105%).
For example, a pig sized to suit a 24” OD x 25.4mm WT (558.8mm ID) pipeline would
be sized as follows:Guide Disc OD = Pipe ID x 99% = 558.8mm x 99% = 553mm OD
Sealing Disc OD = Pipe ID x 105% = 558.8mm x 105% = 587mm OD
Fig. 1 – Standard Bi-Di Pig Layout
The term multi-diameter or dual-diameter is mostly applied to lines with definite
changes in outer diameter (say 8” x 10”). This usually requires pigs similar to those in
figures 1 and 2 below.
Fig. 2 - 16” x 20” Dual-Diameter Pig
Fig. 3 18” x 14” Dual-Diameter
Changes in pipe wall-thickness or fittings (valves, tees etc) can also create situations
similar to those seen in true ‘dual-diameter’ or ‘multi-diameter’ pipelines. When
designing a pig to suit more than one ID, we first look to see if a conventional pig
design can be used. To do this we see if the sealing discs can be increased (to a
maximum of 8% over the minimum line ID) or if the guide discs can be reduced.
However, if the seals are too large, we run the risk of them creasing in the smallest ID,
causing a leak path. Similarly, if the guide discs are too small, the pig sits lower in the
large ID’s, leading to a potential leak path at the top of the pig (as the seals are sitting
too low in the pipe too).
If the changes in pipeline ID mean that conventional seal and guide arrangements
cannot be used, then we must adopt a multi-diameter approach to the pig design. There
are two basic possibilities: •
Leave the design as normal, but cut slots around guide discs, so that they can
bend easily in the smaller ID (as figure 4).
Fig. 4 - Slotted guide pig
•
Use guide discs sized below the minimum ID, seals sized above the maximum
ID and intermediate discs to provide sealing or support backup (as figure 5).
Fig. 5 - Pig fitted with intermediate disc
It is also possible to use a number of other techniques, such as flaps and wheel support
(as figures 1 and 2), or combinations of the options above (figure 6).
Fig. 6 - Combination design, with both slotted discs and intermediate discs
The decision on which option to use is not based purely on the minimum and maximum
pipe ID, but also where those diameters occur within the pipeline system. For example,
if the line ID is the minimum ID, but bends are at the maximum, the pig will be different
from one for a line where the bends are a smaller ID than the pipeline.
Propipe produces all styles of pigs, but has found that the intermediate disc design is
best suited to applications where the changes in ID are significant, but not sufficient
enough to be classed as fully ‘dual-diameter’. The intermediate discs can be made as
flexible sealing discs, thinner guiding discs (able to deflect) or a mid-hardness disc that
can act as both sealing disc and guide disc.
The slotted guide arrangement is ideal for applications where the majority of the line ID
is within a short range, but where short, large reductions in ID are present. It is not
suited to long distance running in many applications, as the slots themselves can make
the guide disc more flexible and can also lead to increased wear.
Selection of the correct pig design is always done specific to the pipeline and is
dependant upon the number if ID changes and their location within the pipeline. Propipe
experience and commitment to providing the correct pig is essential, to ensure safe,
reliable performance.
Example
Images below (figures 7 and 8) show pigs that were supplied to the Gulfstream Project
in 2002.
These pigs were used during flooding, cleaning, dewatering and gassing-up operations
for a line over 700km long (and uncoated internally).
The pipe ID range for Gulfstream was from 844.5mm to 872.7mm. The majority of the
line ranged from 863mm to 877.7mm. The guide discs were sized at 855mm and it was
accepted that the guides would deflect sufficiently to pass the short sections at 850.9mm
and 844.6mm. Sealing discs could not be made in one size, to cover the entire ID range,
so two sizes were used, at 891mm and 917mm OD’s.
This design accepts that the pig will sit lower in the larger pipe ID’s (because of the
smaller guide discs), but compensates for this by using seals to cover the ‘increased’ ID
range caused by the pig sitting down. If the pig had used larger, slotted guide discs, this
would not have removed the need for two seal sizes, but would have added loading to
the guide discs, due to their reduced rigidity and increased risk of tearing.
Fig. 7 – Front end, Gulfstream 36” pig
Fig. 8 – Overview – three pigs
Fig. 7 – Pig condition, post run
ARTICULATED PIG SPECIFICATION
Application
Articulated pigs designed for negotiating Wye connections, bridging line features and pigging
around various bend radiuses. This type of pig is also highly efficient in long run
dewatering/flooding operations as well as dual-diameter applications..
General Information
The details shown are for common pigs, however various optional extras are available, some of
which are listed below:Cleaning Brushes
Dewaxing / Descaling Pads
Gauging Plate
Polyurethane Bumper Nose or Retaining Flange
Tracking Device
Long Run Support Discs
High Performance Polyurethane
Stainless Steel Body
Support Wheels
Pluggable Bypass Ports
Jetting Head
Magnet Pack
PROJECT DETAIL
Project Name
Nam Con Son Pipeline Project
Customer
BJ Process and Pipeline Services
End Customer
BP (Vietnam)
Project Description
Propipe Limited supplied 26”articulated pigs to BJ Process and Pipeline Services – Vietnam for
commissioning the 372-km Nam Con Son gas pipeline in 2002. The 26” articulated pigs were
developed for the pigging of a subsea wye piece, during flooding, cleaning and dewatering
operations.
Because the pig was required to endure stopping and starting operations the pig needed to weigh
less than conventional pigs in order to prevent seal damage. A new design of articulated wire
rope & polyurethane joint was developed to withstand twice the calculated load and to reduce
the pig weight.
PROPIPE CHECK VALVE PIG
Previous application
Used by Shell on the Goldeneye Project - to traverse a 20”ns check valve in reverse, as shown
in fig.1.
(Figure.1. 20”ns Uni-Di pig traversing check valve in reverse)
PROPIPE HIGH FRICTION ISOLATION PIG
APPLICATION
High Friction Pigs are primarily used to provide a low-pressure, high seal isolation of pipelines,
during maintenance intervention work, as well as during pipelay flooding and dewatering. They
can be sized from 8” up to 48” and are able to be run up to 5 or 10 km prior to use and over
600km after use.
In many instances, especially where divers / operators are expected, Propipe will produce a short
pigging spool and perform verification testing prior to finalisation of the pig design.
TYPICAL VALUES
Size range
Currently 8” to 48”
Pressure Ability
Nominally 1 bar per pig – can be up to 5 bar if accounting for
flip pressure and depending upon line size and direction of
pressure
Number of Discs
10 Sealing Discs and 2 Support / Guide Discs
Bore Passing
Up to 5% bore restrictions (greater with changes in disc
configuration)
Minimum Bend Radius
3D
Materials
Metallic parts – Carbon steel or stainless steel
Pigging Discs – Diprane 54 Polyurethane elastomer
PROPIPE SMART GAUGE PIG
OVERVIEW
The Propipe Smart Gauge Pig is designed to allow the condition of a pipeline to be assessed
without the need to recover the pig, saving significant time and costs. The design of the smart
gauge allows the detection of multiple pipeline flaws - such as a buckle, a dent or excessive weld
penetration. Multiple flaw detection allows multiple pipeline defects to be detected rather than just
the most severe.
FEATURES

Multiple pipeline flaw detection (Such as buckles, dents or excessive weld penetration)

Pipeline flaw data - Indication of position & size upon data download

High Resolution sensor system – Sensitive for detecting gauge disc deflection.

Options for both Acoustic and Electromagnetic signal
SMART GAUGE DETAILS
The smart gauge pig is of standard bi-di pig design with the addition of a smart gauging disc. The
smart gauge disc is manufactured using a conventional aluminium gauge plate, housed in a
polyurethane disc.
disc.
High resolution sensors on board the pig detect any deflection in the gauging
An acoustic pinger or electromagnetic transmitter is fitted to the smart gauge pig and is
configured to change signaling mode upon the detection of a pipeline flaw. Furthermore, data such
as location, clock position and size of deflection can be downloaded to provide valuable
information in such event. The smart gauge pig is rated up to 450 barg, allowing it to remain in the
pipeline during hydrotest.
Contact us for more information about our smart gauge pig.
TECHNICAL SPECIFICATION
Size Range
6” upwards
Smart Gauge Disc
Standard – Constructed from Aluminium & Slotted
Options: Dual Composite Disc - Aluminium / Polyurethane
For use as a “true” multi-hit gauging disc
All Polyurethane (for Multi-diameter pipelines)
All discs are combined with a sensor ring fitted with a minimum
of 8 Independent High-Resolution Sensors (to detect any
deflection of gauge plate)
Drive discs
Configured with discs, capable of Bi-Directional operation.
(Note, gauging can only be performed in the forward direction)
Bend Passing
3D bend passing for all sizes of pig.
Scan Pitch
Data capture from the sensors is triggered by internal clock
pulses. Scan rate will be 200 scans/ second.
Data Storage
Data stored in solid state memory.
Survey Speed
0 to 3m/s.
Accuracy
Gauge Sensing +/- 1mm
Clock Position +/- 15°
Tilt +/-5°
Operating Pressures
250 bar standard
450 bar (high pressure version)
Battery Life (Acoustic Pinger)
200 hours run time from activation.
Beam Pattern (Acoustic Pinger)
Omni Directional ± 2 dB
Frequency
20khz – 40khz
Pinger Detection
Will be compatible with both manual and ROV receiver systems.
Start-up Options
Mechanical or sea water contact start
Data Download
Data download will be via USB2 link to a standard laptop or PC.

Introduction to Propipe Limited

Transcription

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