Currently, Indonesia have a lot of offshore platforms. Most of them are fixed platform. These main structures can be divided into 3 parts :
- Jacket
The lower part of main structure will act as covered layer of pile and support upper deck. As you see the image, they may have a lot of braces and other structural support such as can, barge bumper, skirt pile guide and mudmat framing.
- Pile
A Tubular pipe that made of steel will penetrate into seabed through jacket till certain depth below the mudline. Pile consist of main part, stabbing guide, cutoff, transition piece and skirt.
- Topside/Deck
The upper part of oil platform consist of single or multi module. These module will be supported by main and additional framing through main or cellar or mezanine deck.
Structure installation would be done after load out activity is completed. Installation using lifting method has more benefit than float over method as it will save time and manpower. However additional studies have to conducted before any method can be used to install the module.
(CJP-180509)
Indomigas 
ada yg bisa bantu saya menjekaskan tentang platform dan rig????
Mas Fahmi,
Kalau dilihat dari environmental load antara laut RI dan North Sea tentu berbeda dan pastinya akan berbeda pula desainnya.
Namun saya pikir yg lbh mempengaruhi lg adalah kapasitas produksi hydrokarbon yg diinginkan dan dana yg tersedia. Jadi Concrete Gravity Substructure (CGS) platforms yg mngkn mas Fahmi maksudkan ini lbh afdhol dipakai untuk produksi jangka panjang/ sumur yg banyak dalam storage yg besar. Bahkan kalau dilihat cgs jg bisa dipindahkan, bisa dilihat di artikel “offshore”.
Salam,
CJP
mas,,knapa sih di laut indonesia tu jarang yang struktur nya pake concrete…? knapa struktur concrete banyakan ada di north sea….? apa ada hubunganya dengan gelombang laut ? atau struktur tanahnya…? thanx…..