Shell said on Tuesday that most of the oil leak from a land-based pipeline at Shell Energy and Chemicals Park Singapore on Bukom island had been cleaned up, with only small patches of light sheens around the island and Bukom Kechil remaining.

SINGAPORE - The clean-up of the waters, rocks and structures on and between Pulau Bukom and Bukom Kechil is expected to be completed in days, with no new oil sightings as at 3pm on Oct 22. This comes after more than 30 tonnes of “slop” – a mixture of oil and water – were leaked into the sea from a Shell pipeline between the two islands on Oct 20.

Nigeria has declined to approve the sale of Shell's (NYSE:SHEL) onshore and shallow-water oil and gas in the Niger Delta region to a consortium of local companies, the country's upstream regulator said Monday.

Singapore agencies said on Tuesday they were making progress in cleaning up an oil leak and there had been no new sightings of oil at sea or onshore as of 3 p.m. (0700 GMT).

Singapore said it was alerted to an oil leakage from a Shell land-based pipeline early Sunday, and steps have been taken to clean up the spill.

An oil leak in the pre-dawn hours of Oct 20 from a Shell pipeline has affected waters off Singapore, said the Maritime and Port Authority of Singapore (MPA). The oil started leaking at around 5.30am from a land-based pipeline belonging to the British petrochemical company between Bukom Island and Bukom Kecil,

"We estimate that approximately 30-40 metric tonnes of slop, which is a mixture of oil and water, was leaked into the sea," the company said in a statement, adding that it was working with all relevant authorities to manage the clean-up effort.

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An oil leakage from a pipeline in Singapore operated by Shell (NYSE:SHEL) was reported early Sunday, according to local officials. They said a cleanup was under way. The leak was reported to have “stopped at source,

Major energy company Shell and Singapore's Maritime and Port Authority deployed clean-up measures after a leak from a land-based pipeline, they said on Sunday.