Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #75 on Oct 11, 2009, 2:47am »
A second pass to intercept the leaking well is on track to take place on Monday (12 October). An operation to establish a side track well through a very hard deep rock formation from the 2,494m level was progressing. Drilling through this type of formation at these depths can be slow.
A rotary steerable drilling assembly was replaced yesterday with a downhole motor assembly to establish the side track. A more aggressive drilling assembly will then be used to drill to within approximately five meters of the existing well casing. At that point, a drilling assembly will be used to make the second pass to intercept with the leaking well. Replacing each drilling assembly requires a trip back up the full length of the relief well to fit and test before restarting drilling.
The drilling team on board the West Triton drilling rig is aiming to intersect a piece of steel casing in the leaking well 25cm in diameter, 2.6km below the seabed.
I must say I agree with holdrill why weight up if the fluid you are using is controlling the relief well, the formation of interest has been flowing for some time now and may not support the extra mud weight
I must say I agree with holdrill why weight up if the fluid you are using is controlling the relief well, the formation of interest has been flowing for some time now and may not support the extra mud weight
You guys are not alone re:this question but you might want to read this summary on tertiary well control at the following site:
The situation described as per PTTEPT's reports is not identical to the one described in this summary but similar concerns expressed by Holdril and Leonard arose with this senario.
Here are a few excerpts from the article that may be of interest to those following this thread : ______________________________________________________ 1st Excerpt:
"Well control can be an unpleasant experience. In its initial stages the problem often appears unconquerable and weeks can pass without progress.
This paper is about the successful abandonment of such an episode of well control, in deepwater (i.e. greater than 300 m water depth), that was initially suspended with a closed-in subsea BOP. The BOP held in place a sheared 5-in. drillpipe that had been intermittently blowing dry gas and formation cuttings to the rig floor for 20 days. The objective of the well-recovery operations was to re-enter the well and properly abandon it without creating another uncontrolled situation."
2nd Excerpt:
"Therefore, whether to expect a large gas-filled void downhole or a collapsed wellbore owing to the unconsolidation of the formation caused by the large amount of rock removal was uncertain."................"Kill-weight mud would first be pumped into the formation to assess whether it could at least control the wellhead pressures."
3rd Excerpt
"It was understood at the outset that an entry to a pressurized wellbore would be attempted and as a result the first course of business was to implement a dual-barrier policy wherever possible.Once well control at the seabed was guaranteed, the well would be re-entered and the existing "cut" pipe would be dressed off with a milling assembly, allowing a tie-back string run to have full connection to surface. This wellbore configuration would then allow pumping of fluids".
"It was estimated that the well-abandonment operation would take approximately 5 weeks (ideal time) to complete."
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
Animation of intercept is at around 03:50 to 04:00 min into the clip. Target is in between the KOP & EOB and might explain why they want to pump kill mud after establishing communication with the mill assy.
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #78 on Oct 13, 2009, 11:45am »
PTTEP Australasia reports that its second pass today to intercept and stop the leaking well in the Montara field in the Timor Sea at a target zone 16km below the seabed did not succeed.
“We will now re-run the vector magnetic tools tonight to see how close we are to the target. Our drilling experts are hopeful that we will not need such a long side track to hit it on the next pass,” PTTEP Australasia Director and Financial Officer José Martins said.
In the technically and logistically complex operation, the relief well team onboard the West Triton drilling rig is using sophisticated electromagnetic ranging tools which emit a current to charge the steel casing of the leaking well The casing then emits an electromagnetic field which is detected by tool sensors. A surface computer uses the readings to calculate the distance and direction of the target casing from the previous drill pass location.
By late yesterday, the team on board the West Triton had used a rotary steerable assembly to drill to 2,738m, calculated to be within a few meters of the target - a piece of steel casing 25cm in diameter at a depth of 2.6km.
“While not making an interception on today’s pass is disappointing, the probability of success given the plus or minus one meter accuracy on the target was not in our favour. The closer we get to the target with each pass, the more certain we become of its location,” Mr. Martins said.
The drilling team expects to know tomorrow (14 October) when it should be able to make the next pass to intercept the leaking well. It is aiming to do this on the weekend.
After successfully intercepting the leaking well, the operation will enter two separate and sequential phases:
1. Stopping the flow: Almost immediately after intercept, heavy mud is pumped down the full length of the relief well from the West Triton, into the leaking well to stop the flow of oil, gas and water. It will take approximately two hours to fill the total of 6.3km down the full length of the relief well and back up the existing well to the surface at the well head platform beneath the West Atlas rig. This will displace the oil, gas and water and stop the flow.
2. Plug-in the well bore: After the flow has been stopped, there will be an approximate 24-hour safety stand off period. A team from ALERT Well Control will then re-board the well head platform and the West Atlas rig to further secure the well by inserting two plugs into the previously leaking well bore. This second operation to plug the well should take about another week to complete.
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Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #79 on Oct 13, 2009, 10:41pm »
Especially in item 2, it sounds like a cover up of actual initial events is continuing. NOW, they claim to be prepared to 'insert' two plugs in the 'previously' leaking wellbore. It also sounds like they have NO idea where the casing or well trajectory of the wells at this location are. I know ALERT are very capable, the information to locate the problem sounds like a bunch of 'maybe's'.
Especially in item 2, it sounds like a cover up of actual initial events is continuing. NOW, they claim to be prepared to 'insert' two plugs in the 'previously' leaking wellbore. It also sounds like they have NO idea where the casing or well trajectory of the wells at this location are. I know ALERT are very capable, the information to locate the problem sounds like a bunch of 'maybe's'.
Hope ALERT are not having to deal with erroneous survey data and stupid inputs from folks running around a tree chasin after their own rear ends.
Wells have been drilled in the wrong direction, like 180 deg - opposite direction for a weeks before the error was noticed. The wrong heads got rolled, guys who picked up the error and alerted superiors got the sack. This is not a rare incident. Unlike the ones where the drill bit pops out the surface 2.5 km away these remain out-a-sight-out-a-mind.
I seen the Nanhai 3 (South Seas) blowout early eighties (Sarawak) successfully plugged in one go from a sister rig using a casing sniffer. Back then at best the DD's used the HP hand held computer/calculator - and the rest of us used calculators. Today we have a cabal, top to bottom, of like mind folks who will spontaneously perpetuate myths, Pentium 5 dual core processors and blokes in town watching parameters real time whilst simultaneous breast feeding, with impunity, until an incident like this, just waiting to happen, rears its head.
I find it a bit hard to swallow the fact that they plan to, as per PTTEPS media relaeas graphic presentations, "poke" as opposed to "slice" the well to establish communication....ie drill directly into it rather than scrape a short trench from just above then downwards once they get to within 5 m, seeing accuracy as per PPTEP's reports is +/- 1m.
Even if they are spot on, theoretically and actually, this +/-1.0m error alone even if they have been provided meaningful data of the target well and it is is where its supposed to be, will call for quite a feat with an 8.5".
It takes two points to draw a straight line. Lets give them all the benefit of the doubt for the 3rd official run.
As per PTTEP'S TV presentation graphics, the target well name is Montara 1H St1. For test flow rate for Montara #1 check out this government website :
................"Montara 1 was drilled in 1988 to test Oxfordian sandstones in a large northeast–southwest-trending faulted anticline. The well encountered a net gas pay of 24.8 m and a net oil pay of 9.4 m. A DST at 2628–2632 m flowed a maximum of 5736 BOPD of oil".....................
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Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #81 on Oct 14, 2009, 2:57am »
From the arm-chair. I thought this was to be the easiest of Kills. I hate to be cynical but remember Alert is on a 'Day Rate'. Maybe we should have a success fee.
Facts I understand: 1. The well-head is leaking on the Texas Deck, or on the Cellar deck of the Platform. 2. The casing is intact from the Surface to the open end or slotted liner or perforations. 3. The well path is 6.3 km long. The casing has openings which maybe 4-5 km from the rig. (They know that.
My solution to protect the reservoir 1. Stand the relief rig over the end of the competent casing. 2. Drill a vertical well into the formation where the pipe ends. Get as close as possible. (Chance of success 100%) 3. Case the relief well. No cement, just ECP, or two. 4. Pump a cement plug to close the end of the casing. 5. Allow the pressure to deplete. 6.Re-enter flowing well and drill out cement.
I see your comments as more constructive than cynical.
Facts I understand: 1. The well-head is leaking on the Texas Deck, or on the Cellar deck of the Platform. 2. The casing is intact from the Surface to the open end or slotted liner or perforations.
Hmmmm…. a “sticky beak” pointed at lower left of this picture, particularly the sea, sky to the left of the riser below the Texas deck and also alongside the entire length of the riser makes me wonder why these sections are blurred compared to the sea and sky to the right of the riser. Nothing’s been air brushed or doctored on close inspection of the pixels in the photo.
Hope a member who knows how to post pictures can do this before it is removed from the website.
Perhaps I’m seeing it wrong? Any comments welcome?
My solution to protect the reservoir 1. Stand the relief rig over the end of the competent casing. 2. Drill a vertical well into the formation where the pipe ends. Get as close as possible. (Chance of success 100%)
It does appear they are in effect, for similar results your comment suggests, directionally targeting the section betwixt the KOP and EOB. There is no indication where the shoe is, as per PTTEP’s presentations on the net…well none that I have found so far, but it is likely they too want to home-in as close as possible to the shoe.
3. Case the relief well. No cement, just ECP, or two.-. – A prudent measure indeed seeing the area carbonates prone to total losses. I’d wish they’d do this too, even with their approach before pumping anything.
Members reading this response are advised to read Holdrill's post in its entirety as I have quoted him only in part in this post.
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
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Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #83 on Oct 14, 2009, 8:58am »
It does appear they are in effect, for similar results your comment suggests, directionally targeting the section betwixt the KOP and EOB. There is no indication where the shoe is, as per PTTEP’s presentations on the net…well none that I have found so far, but it is likely they too want to home-in as close as possible to the shoe.
What I hear they are attempting to puncture the casing at about 2,600 m. Between the KOP and the EOB. The well is 6,300 m MD
Difficult.
I would go for the easy target with the better chance of success. The highest perf or slot or if barefoot the end of the casing,
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #84 on Oct 14, 2009, 11:44am »
Interesting. PTTEP's report today states a finer error margin of +/- 0.2m for the next run or 3rd try, down from +/- 1.0m during the second or previous attempt.
From a bit-eye perspective targeting the section between E.O.B and K.O.P will give the casing sniffer a higher density of metal/TVD, compared to a totally vertical or horizontal section, if relief trajectory is approached from the horizontal.
Leaving out directional survey cone of uncertainty, perhaps this is another factor they have considered for this location..perhaps ! because I got no information on the sniffers effective range or sensitivity.
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #86 on Oct 15, 2009, 4:04am »
Holdrill,
Will perforation aperture and density allow sufficient flow rate for this ?
The target is much harder than going vertically down to intercept end of pipe assuming end of pipe is horizontal. Possibly because pumping heavies into the early part or pipe ended horizontal section will only get it blown out once a slug large enough builds up to block the hole without allowing gas and oil to displace as heavies won't be able to exert hydrostatic in the horizontal and build up behind such a slug will eventually blow through it.
Whereas heavy mud pumped between KOP and EOB can flow down the low side eventually to TD, filling it and displacing gas/oil out upwards via the top side until the entire hole is full up.
Pumping heavy mud via perforations will call for higher pressure and flow rates compared with directly milling a hole into the casing which requires lesser flow rates in an area prone to total losses. Least that's what I reckon based on sometimes cryptic PTTEP reports which has the right to present the view from their perspective but it don't mean persons reading these reports always have to share the same logic . But Yes if contact is all that needed then a gun in combination with the new error margin of 0.2m will certainly narrow the odds but then there's the question of ignition which needs oxygen. We all know water, oil and hydrocarbon and various gases like H2S can be trapped in formation but what about oxygen ?
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
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Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #87 on Oct 15, 2009, 6:29am »
Pupjoint, Your concept of the flow through a small orifice, like mine is conditioned by what happens at atmospheric pressure. This will be with circulating pressure, pumps will be able to reach at least 5,000 psi. I had an interesting experience in Denmark for Maersk. We planned to pump Acid at 9bbl/min through six (6) 10 mm holes in 500 m of 7" casing. That was one hole pre-drilled in every 7th joint of casing. We easily displaced at that rate. Once the acid started to erode the formation we did not see any surface pressure. Also, remember the hole that develops in the drill-pipe becomes washed out to a slit that allows the mud to flow out. It starts as nothing more than a pin hole.
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #88 on Oct 16, 2009, 12:03am »
Holdril,
Thanks for sharing your experience with us. I am familiar with the mechanics involving firing guns from inside casing or holes into formation but have zero experience doing it from formation into casing.
Have also since edited my last post - heavy mud instead of cement will be pumped once intercept is achieved. With +/-0.2m error they'll have the highest chance so far at succeeding on the 3 try. Hope all goes well this Saturday arvo.
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
Third attempt to cap leaking oil well October 17, 2009 - 7:29AM AAP
The company that owns the damaged West Atlas rig will make a third attempt on Saturday to cap the well that's been leaking oil into the Timor Sea at the rate of around 400 barrels a day for two months.
Two attempts in the last week have been unsuccessful, and the Greens say the environmental impact of the spill has been much bigger than the government and the company PTTEP admit.
But Environment Minister Peter Garrett announced this week that a deal has been struck for the Thai-based company to pay for environmental monitoring in the Timor Sea for at least two years.
24,000 +/- bbls ?????????
Best regards RAD
« Last Edit: Oct 16, 2009, 9:31pm by RobinDavies »
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #90 on Oct 17, 2009, 2:04am »
Electromagnetic Ranging
"........Determining the distance and direction to adjacent wellbores is a critical task when drilling relief wells or preventing wellbore collisions. Because of the cumulative and systematic errors inherent in measurement-while-drilling (MWD) or gyroscopic tools, the measured survey coordinates of a wellbore will have increasing uncertainty with depth, which is referred to as the “cone of uncertainty................"
".........the most common methods are passive magnetic and active-electromagnetic ranging, which both depend on steel,such as casing..........."
".........When performing an electromagnetic ranging run, the drillpipe is tripped out of the relief well, and the electromagnetic ranging tool is run in hole on wireline. The tool consists of a sensor capable of measuring magnetic fields and an electrode that injects current into the surrounding formations. If the current is picked up on the target-well casing/drillstring, it creates a magnetic field that can be measured using the ranging-tool sensor. The sensor data can be analyzed to indicate the direction and distance to the target well........"
"............The first application of electromagnetic ranging to achieve a downhole well intersection was performed on a blowout in the Gulf of Mexico in 1980. Furthermore, in 1982, a modified technique with downhole current injection was used to demonstrate that casing could be detected in a blowout at a range of at least 60 m. The technique showed great efficiency in locating blowout tubulars for a direct intersection. Casing detection, along with additional developments in surveying and MWD, provided a technique of triangulating the blowing well, reducing plugging and sidetracks..........."
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #92 on Oct 17, 2009, 7:35am »
PTTEP Australasia reports that its third pass today to intercept and stop the leaking well In the Montara field in the Timor Sea at a target zone 2.6km below the seabed did not succeed.
The relief well team onboard the West Triton drilling rig will run the vector magnetic tools tonight to see how close it came to the target. It expects to know tomorrow (Sunday, 18 October) when the next pass to intercept the leaking well can be made.
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Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #93 on Oct 22, 2009, 6:01am »
The amount of oil leaking from a wellhead in the Timor Sea could be more than five times higher than its operators estimate, the Greens say.
Oil has been leaking from the Montara wellhead, more than 200km north-west of West Australia's Kimberley coastline, since August 21.
The Thai-based company which operates the oilfield, PTTEP Australasia, put the initial rate of flow of oil at the site at 400 barrels a day and says the flow has diminished.
Based on the company's estimates, the spill could have leaked up to 3.7 million liters of oil since it began.
But the Greens say the actual figure is between 10 and 20 million liters.
Greens Senator Rachel Siewert said officials from the federal resources, energy and tourism departments had revealed the discrepancy during questioning at a Senate estimates hearing on Wednesday.
PTTEP had failed to give the officials any basis for its calculations on the rate of the oil flow, Senator Siewert said.
Based on data from Geoscience Australia the flow could be about 2,000 barrels a day, plus condensate, she said.
Based on PTTEP's own documents and data from similar wellheads nearby, an independent analysis sourced by the Greens calculated the Montara wellhead could be leaking as much as 3,000 barrels of oil a day.
"It is clear that we have no confidence in the estimates by the company and I must ask why the government chose to support the company's estimates rather than the department's estimates," Senator Siewert said.
"It is a clear that a thorough and comprehensive inquiry is needed into this spill," she said.
"If the oil had continued to leak at this rate over the two months since the accident on August 21, this would suggest that up to 20 million liters of oil could have leaked into the Timor Sea.
"However, given the drop-off in the observed rate of oil leakage in the first weeks of the spill reported by AMSA, we might expect that the total amount of oil spilled could be lower, perhaps around 10 million liters."
The West Triton drilling rig, which reached the site five weeks ago after being towed from Singapore, is being used in attempts to intercept the leaking well, 2.6km under the seabed, and pump in heavy mud to block the leak.
It has to intersect a 25cm diameter casing, which is detected by sophisticated electro-magnetic ranging tools, before the plugging operation can proceed.
Three failed attempts have been made to plug the leaking well. Another attempt is expected on Friday.
Conservation groups have been critical of the response to the oil spill.
John Carey of Pew Environmental Group, an environmental advocacy organization, said the spill was now Australia's third worst oil spill, based on the Geoscience Australia data.
"The oil spill has fluctuated since it began but the revelations overnight indicate that the amount of oil polluting the sea off the Kimberley coast is likely to be almost three times more than what was previously thought," Mr Carey said.
"Halting this spill is the first priority, the second priority is to make sure that there are safeguards put in place to protect the marine environment from future spills and create large sanctuary areas as a safe haven for marine life
PTTEP had failed to give the officials any basis for its calculations on the rate of the oil flow, Senator Siewert said.
Based on PTTEP's own documents and data from similar wellheads nearby, an independent analysis sourced by the Greens calculated the Montara wellhead could be leaking as much as 3,000 barrels of oil a day.
If this is the case then the Greens by the same token should show how they have arrived at this figure of 3000 bbl/day.
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
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Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #95 on Oct 22, 2009, 6:59am »
Just to answer the bit about other well in the same reservoir. There is no production. The accident occurred within several days of the rig arriving to tie back wells drilled in the exploration phase. The production jacket was installed earlier this year.
Just to answer the bit about other well in the same reservoir. There is no production. The accident occurred within several days of the rig arriving to tie back wells drilled in the exploration phase. The production jacket was installed earlier this year.
Thanks Holdril,
I don't know if these wells they had planned to tie back, do or do not tap into the same reservoir. However if they do or some of them do, after all this time while tackling the problem, there must be some significant drop in pressure for wells sharing the same reservoir.
PV/T=constant. ...ie: they can use the corresponding drop in pressure in other wells tapping into the same reservoir to work out volume lost to the leak, spill, blowout call it what you may.
On a separate note: see interesting picture of piece of apparently old cement recovered on today's report. Judging from its thickness it apparently looks like 9 5/8" Csg vs 12.25 in OH.
Information or opinions are solely provided for educational and/or discussion purposes on an informal public forum and should not be interpreted as a recommendation for a specific treatment plan, course of action or product/ service. Use of any of this information does not replace consultations with qualified individuals in these respective fields.
Joined: Jun 2003 Gender: Male Posts: 932 Location: PERTH WESTERN AUSTRALIA
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #98 on Oct 22, 2009, 8:39am »
This is 'Gas Play' the leak in the main is gas. The liquids are condensates. 2-3k bopd condensate from this reservoir would make it a real 'Barn Burner'. Coogee sold it too cheap, if there is 3k bopd condensate.
I would hope that 9 week of leaking would not significantly deplete the reservoir.
Joined: Jun 2003 Gender: Male Posts: 932 Location: PERTH WESTERN AUSTRALIA
Re: Oil, Gas Leak on Seadrill West Atlas Jackup - « Reply #99 on Oct 23, 2009, 8:47am »
I wish to retract what i said about this being a Gas Well. There appears to be a lot of Crude there also. The following is from an old web page before PPTEP purchased Coogee.
Coogee Resources will develop the A$450 million Montara Project via an FPSO located at the Montara field with tie-backs to the Skua and Swift/Swallow fields via flowlines. The Montara, Skua and Swift/Swallow oil fields are located in the southern Timor Sea approximately 650km west of Darwin. This section of the Timor Sea is administered by the Northern Territory Department of Primary Industry Fisheries and Mines (NTDPIFM) within Australian territory and is free from any potential issues of sovereignty. The Montara oil field is approximately 82 kilometres south-west of the existing operations at Challis, in about 80 meters of water. The Skua oil field is located 25 kilometres north-west of the Montara oil field and the Swift/Swallow oil field is located 9 kilometres south-east of the Skua field. Coogee owns 100% of Block AC/RL3, which hosts Montara, and the adjoining Block AC/P34, where the satellites are located. The Northern Territory state government has granted environmental approval for Montara and Coogee has submitted a field development plan. Montara was discovered in the 1980s by BHP Billiton. Skua is an abandoned field that BHP operated for several years before shutting it down in February 1997. Swift and Swallow are finds that Coogee made this year with the semi-submersible drilling rig Ocean Bounty. The development consists of a floating production, storage and offloading vessel, a mooring system, a wellhead platform, about 60 kilometres of pipelines and umbilicals, plus subsea manifolds and nine producing wells, of which six will be drilled in Phase 1 (currently scheduled to be completed in the third quarter of 2008) and three will be drilled in Phase 2 (currently scheduled to be completed in the third quarter of 2009). Coogee intends to use the FPSO as a hub on its Montara field and tie in the Skua, Swift and Swallow satellites. Coogee Resources has commenced work on the design, engineering and procurement activities for the Montara Project. Facility construction and development drilling is scheduled to commence in 2007. The platform will be built at a yard in South-east Asia. WorleyParsons is providing engineering services for the platform, while Technip did project concept engineering. Norway's Advanced Production & Loading (APL) will supply Tanker Pacific Offshore Terminals with a submerged turret system. The $40 million contract is for the provision of a system to be installed on the Montara floating production, storage and offloading vessel in the first half of 2008. The Montara FPSO is being converted by Tanker Pacific. The 148,255-dwt tanker Freeway will be converted into an FPSO in Jurong Shipyard. Freeway is scheduled to enter the shipyard in the second quarter and will undergo life extension and conversion works, including installation of an internal turret, crude separation, and gas compression and reinjection facilities. On completion in the second quarter of 2008, the FPSO will be named Montara Venture and will be able to handle 40,000 bpd of oil production and store 900,000 barrels. Vetco Gray was awarded a contract valued at $26 million for the supply of subsea production trees and controls. The contract includes four horizontal trees on mudline (HTOM) systems, wellheads and control systems for subsea control modules, topside controls and subsea distribution and instrumentation. The HTOM systems will be the first ever to be installed in the Asia Pacific/Middle East regions. Scheduled for fast track delivery within 42 weeks, the contract involves VetcoGray facilities in the UK; Singapore and Australia. Montara has recoverable reserves of 24 million barrels and Skua, Swift and Swallow a combined 15 million barrels. First oil is planned in the third quarter of 2008.
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