MOSCOW (MRC) -- Mammoet transported 22 pieces of vital equipment to the onshore processing facility compression site, as part of the Sakhalin-2 project, despite extreme conditions, reported Hydrocarbonprocessing.
When live, the OPFС will be a part of one of the biggest oil and gas projects - Sakhalin-2, which is expected to be the premiere energy source for Asia-Pacific.
Sakhalin-2 OPF is located on the east coast of Sakhalin Island. The only access for large equipment delivery is via transportation barges passing through the volatile Sea of Okhotsk, which is known for its high winds and stormy conditions. The island is primarily home to abundant wildlife and therefore lacks enough infrastructure to complete projects of this scale. The biggest challenge was the lack of a sheltered port capable of withstanding the weight of the gas production equipment. For this challenge the client needed a partner who could operate in this remote location and within the testing conditions.
The solution created for this challenge was a three-stage temporary beach landing. First, each of the 22 items were individually transferred from the transportation barge to an intermediate barge that was small enough to dock, then to the temporary beach landing facility and finally to the beach. The existing docking bay couldn’t withstand the 500t three phase inlet separator, so it was built a 200m temporary beach landing facility, which for environmental reasons was dismantled after the execution of works so the beach could be fully restored to its initial condition.
The temporary facility meant that Mammoet could transport the equipment off the barge using SPMTs. This transfer was challenging, especially for the items on the single trailers, because it was executed on open sea. Uncertain sea conditions directly affected the behaviour of the intermediate barge, and therefore Mammoet’s engineers needed to make precise calculations for every possible situation so that the transfer could take place. Once this step had been completed, the third and final stage was the 7km journey from the beach to the site.
“The beach landing had several special requirements. It needed to be strong enough to carry the weight of the load, with an added focus on stability to counteract the extreme wind and sea conditions. The nearest settlement was over 100km away, so the smallest details required extensive preparation," Mammoet’s Project Manager, Dmitry Matsiborko said. “The initial schedule for the load-in to the island was 17 days, but Mammoet completed it in five. This successful execution helped us win additional scope for the installation of the three heaviest items at the OPFС site and transportation of the nine heaviest items to the installation area, so we are very happy with our efforts. We will now be able to adopt this same approach to projects with similar challenges in the future.”
As MRC informed previously, in March 2019, Mammoet safely completed a critical lift at Shell’s Pennsylvania Chemicals Project in Potter Township, utilizing its MSG80 to hoist a 2,000 ton quench tower into position. The facility is the first major US project of its kind to be built outside of the Gulf Coast region in 20 years. Once operational, the facility will boast an ethane cracker and three polyethylene units.
Ethylene and propylene are feedstocks for producing polyethylene (PE) and polypropylene (PP).
According to MRC's ScanPlast report, Russia's estimated PE consumption totalled 721,290 tonnes in the first four month of 2020, up by 4% year on year. Low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) shipments grew partially because of the increased capacity utilisation at ZapSibNeftekhim. At the same time, PP shipments to the Russian market totalled 347,440 tonnes in January-April 2020 (calculated by the formula production minus export plus import). Supply exclusively of PP random copolymer increased.