The Petroleum Act 1987 (1987 chapter 12) is an Act of the Parliament of the United Kingdom which updates the arrangements for regulating offshore installations and their operation. In particular it makes provisions for the licensing and the safe and orderly abandonment of installations and submarine pipelines. Background The cost of totally removing all existing offshore installations on the UK continental shelf was estimated, in 1984, to be £6 billion (1984 prices). The government hoped that costs could be saved by allowing the partial, rather than the total, removal of installations. It was necessary that an appropriate framework should be in place to set standards for the removal operations. Apart from the interests of oil companies there were those of fishermen and mariners, the UK's obligations under international law and the interests of the taxpayer. The responsibility for removal rested with the owners of an installation or pipeline. There should be criminal offences for failure to comply with obligations. The government gave the Secretary of State enabling powers to make regulations concerning detailed standards for abandonment. In addition to an abandonment regime it was necessary to update the royalty regime by rationalising the procedures for royalty accounting and arbitration and the provisions for the measurement of petroleum. Furthermore, enabling powers were needed to allow repayment of royalties to make allowance for abandonment costs. The UK offshore licensing regime needed to be extended to the territorial waters of Northern Ireland. In 1987 each safety zone round an installation had to be established by statutory instrument. Legislation was necessary to provide for the automatic creation of a 500 metre safety zones around offshore installations. Updated legislation for onshore pipelines was required, especially provisions for insurance arrangements; the Secretary of State was empowered to prohibit the use or testing of any pipeline unless funds were available to discharge any liability for loss or damage. The Petroleum Act 1987 The Petroleum Act 1987 (1987 c. 12) received Royal Assent on 9 April 1987. Its long title is: ‘An Act to make provision in respect of the abandonment of onshore installations and submarine pipe-lines and in respect of safety zones around offshore installations; to amend the Petroleum (Production) Act 1934 and to make provision in respect of licences under that Act; to amend the law relating to pipe-lines; to repeal sections 34 to 39 of the Petroleum and Submarine Pipe-lines Act 1975; and for connected