Page 320 - Introduction to Petroleum Engineering

SAKHALIN‐2 PROJECT, SAKHALIN ISLAND, RUSSIA 309

FIguRE 15.11 TransSakhalin pipeline system. (Source: Courtesy of Sakhalin Energy
(2016), personal communication.)

Sakhalin Energy entered the LNG shipping business by participating in projects to
build two LNG tankers.
The shareholders of Sakhalin Energy changed again in 2006 when the Russian
company Gazprom acquired majority interest in the Sakhalin‐2 project. The share-
holders of Sakhalin Energy were now Gazprom (50% plus 1 share), Shell (27.5%
minus 1 share), Mitsui (12.5%), and Mitsubishi (10%).
Construction of the TransSakhalin pipeline system officially began in 2004
(Figure 15.11). An oil pipeline and a gas pipeline were built along a single 800 km
corridor that runs most of the length of Sakhalin Island. Booster pumps and compres-
sors are used to increase pressure in the oil and gas pipelines. The pipeline system
began transporting fluids from north to south of Sakhalin Island in 2008.
Sakhalin‐2 platforms are located a few miles offshore Sakhalin Island. Tie in
modules and offshore pipelines were installed in 2006 to allow year‐round oil and
gas production and export from the Molikpaq platform. The Molikpaq platform
began year‐round operations in 2008.
Concrete gravity base structures were installed for the Lun‐A platform and PA‐B
platform during the summer of 2005. Platform topsides were installed in 2006 for the
Lun‐A platform and in 2007 for the PA‐B platform. The Lun‐A platform began
natural gas production from the Lunskoye field in January 2009.
Produced fluids from the P‐A field and the Lunskoye field make landfall at the
Onshore Processing Facility (OPF) in the north near Nogliki. The primary
purpose of the OPF is to process the Lunskoye production stream into gas and
condensate for transport by the TransSakhalin pipeline system to the LNG plant
at Prigorodnoye Production Complex and seaport on Aniva Bay in the south. The
OPF began processing fluids in 2008. The LNG plant was commissioned in
February 2009. A loading jetty connects the LNG plant to LNG carriers in Aniva
Bay (Figure 15.12).
The OPF also prepares oil and gas production from the P‐A field for transport by
the TransSakhalin pipeline system to the Oil Export Terminal (OET) at Prigorodnoye
Production Complex. An offshore pipeline and tanker loading unit connect the OET
to oil tankers in Aniva Bay. Year‐round oil export from Prigorodnoye Production
Complex started in 2008.