Mohon bantuannya untuk share pengalaman jika ada yang pernah hook-up FPSO ke SYSM dengan jumper seperti di gambar terlampir. Jumlah jumpernya ada 18 buah (6 buah uk 16 inch; 2 buah uk 8 inch; 10 buah uk 3 inch, diantaranya utk HV cables (3) dan Fibre Optic (1).

Mengingat jarak antara FPSO & SYMS sangat sempit (27 meter) sedangkan jarak vertical dari anti yaw/balast tank dgn water level hanya 15 meter, bagaimana, how it engineered dan dgn alat (installation spread) apa saja yang di gunakan, selain crane barge.

Tanya – hatsamalo

Rekan2 Milis Migas Indonesia di seantero dunia,

Mohon bantuannya utk share pengalaman jika ada yang pernah hook-up FPSO ke SYSM dengan jumper seperti di gambar terlampir. Jumlah jumpernya ada 18 buah (6 buah uk 16 inch; 2 buah uk 8 inch; 10 buah uk 3 inch, diantarnanya utk HV cables (3) dan Fibre Optic (1).

Mengingat jarak antara FPSO & SYMS sangat sempit (27 meter) sedangkan jarak vertical dari anti yaw/balast tank dgn water level hanya 15 meter, bagaimana, how it engineered dan dgn alat (installation spread) apa saja yang di gunakan, selain crane barge. Penadapat dan saran kawan2 akan sangat di hargai. Terima Kasih

Attachment : Jumper s.jpg

Tanggapan 1 – Eddy.Prabowo@akersolutions

Not sure whether this is will solve your problem or not. Just my idea.
First of all, proud to here that you are an indonesian working on venezuelan oil company.
How much water depth of the platform and water depth of the FPSO during loading transfer ?
Is it minimum for 27 m distance between FPSO and SYMS ?

As per your company’s standard, what is the ideal distance during the transfer? I just quote that it seems 27 meter will very short.

I think you need more supports, means not only crane brage will handle these jumpers.
Because during transfer the hoses will receive big loading.

Tanggapan 2 – roeddy setiawan

Dear millis,

I assume the jumper will be coflex or equivalent

you could not avoid to use a crane barge that suitable to install the coflex on the platform side then the other end will be temp abandon on the sea bed completed with the messenger wire and buoy bring ther fpso to suit the distance with the platform recover the bouy with supply boat transfer masenger wire to fpso pull with suitable air tugger connect and secure to their respected mating flange pressure test and done.

Tanggapan 3 – roeddy setiawan

Dear Hatsamalo,

To follow up yesterday email.

It was possible you give up using the crane barge altogether.
you could use the same technique to attach the jumper to plateform end by using the 4 anchor material barge just position yr material barge to the platform end start pulling the coflex with air tugger secure to the mating flange continue with other jumper.

move yr material barge away and placved on startegic location.
Transfer the jumper to supply boat using davit

temp abandon the transfered jumper on seabed (at predetermined loc) dont forget to atach messenger line and buoy for easy retrieval continue with the rest

move yr fpso closer to platform end

etc like yesterday email

question

why the separation was only 27 m or say 100 ft

did you do free body interactio0n during stormy /as per yr metocean data and no colision expected base on the run ????

did this installation for the lake type invironment /benign ??

did they include study for failure of any 2 fpso anchor and still no collision.

was the platform side is drilling platfrom or production platform

in the case drilling platform was that considered enough separation in case well out of control ????

in case prod platform is the quick realease in place just in case fire related incident in platform side ???

i am on gmt +1, probably we have big time different so appologize if this not in timely manner

Tanggapan 4 – Hatumona Samallo

Pak Roeddy,

Crane barge must be weather fanning, as current direction change 180 deg in 12 hours
If we hold SYMS and FPSO in postition it will damage main bearing on SYMS.
There is no crane/installtion barge available in the world with DP capability, all of them used spread anchor mooring system.

There is 4 jumpers, 16 inch 20 ton, 75 meter long each,
Two mooring pendulum 2 meter in diameter each, distance between this pendulum to FPSO only 10 meter. The pendulum connected to yoke arm – 17 meter in length and connected to main bearing at SYMS to allow FPSO rotate as sea current change direcrtion. The FPSO is 2.000.000 barrel capacity, about 2 times FPSO in attached photo (note 5 jumper in back).

Tanggapan 5 – roeddy setiawan

Dear pak Samalo,

I receive yr beautifull phothograph of yr FPSO.

I understand why the separation so short.

I believe you could build temporary flat structure in the fpso.

Float your coflex with suitable material, drag with small tug along side the fpso.

retrieve your float coflex with temp davit from fpso and placed on pre build flat space (carefull not to over stress, bending etc)

drag the coflex with air tuger from platform side, secure to its matting flange

do the same to the rest

dismantling temp space

dismantling temp davit

you could use the same technique by placed the float coflex in the pltform side, inline with yr fpso, and drag it with air tugger from fpso side. ofcourse you should install temp structure to facilitate coflex pulled from fpso side, just a simple roler arranged to made an imaginary curve in order not to overbend the coflex

good luck

Tanggapan 6 – Hatumona Samallo

Pa Roeddy,

Actually, contract of mooring system is EPCI scope. Unfortunetlly, I scope was taken out as part of local content (just follow Indonesian step) and installation engineer does not part of engineering review team. EPC contractor then do design engineering as simple and cheapest as they can safe money, without thinking of installation difficulities. The warantee of the design also will be voided if there is alteration/modification/temporary welding on the structure.

The design allow no space nor temporary platform to be build on jumper deck.
We have did some exercise numbers of intallation scenario, which one of them is same as you sugested, but it does not work. The jumper is 20 ton weight and not floated, similar to flexible riser complete with bend stiffener and was not floating hose. The jumper outer sheild is made from pollyuretane material, prone to scrach, sharp edge and tearing, therefore we could not drag it, eventhough drag it thru soft and skinny surface like rubber mat.

There is 25 ton crane available on FPSO and SYMS, unfortunatelly , the crane boom was not long enough to reach the jumper location.

We will do installation simulation at STS Roterdam, using ocean going trawler with DP modified for this purposes. The vessel will be stationed on the midle of yoke arm with jumper reel on her deck.

Anyway, thank you very much for your input, and please find attached drawing for your reference.

By the way, any FPSO/FSO project going in Indonesia, would you send me some information?
Any in Batam?

Tanggapan 7 – roeddy setiawan

Pak Hatumona,

I concur with you the best was look for good engineering company that can crunching the number in their simulation and dynamic. they are not cheap. but compared to what you risked they are really cheap.

we did job alike in the past, we install steel catenary riser at 3400 ft water depth, we ask stress engineering to do some number crunching and develop an action plan, they are expensive. but by doing with just ordinary pipe we save a lot. dinamic riser from coflex or nkt probably cost 10 mill a piece so two pieces it went 20 mill in 2003 dollars,. but pipe, cost nothing.

I dont realy understand now, what happen in the country, last time i heard somebody want to built some sbm for pertamina field in karawang ???? i duno what the status is. and i also heard ptmn want some sbm around semarang. i think that about its that i know about project in country. I am stationed in Bata, west africa helping some body else deepwater field. so i dont realy know what hot in the country. I guess you could ask direct to the group, may get a real hot news.I am cc this email to the group who know somebody responded.

by the way if you remove temporalily yr 25 ton crane that sit on platform sde, instal a matting pedestal to suit a 150 ton crane (rental crane like this was easy to find in us) then lift those 20 ton coflex with a rigger probably do able.after the job, dismantling and put back the 25 ton crane

best regards and wish you luck with your project