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Hydraulic fracturing [a] is a well stimulation technique involving the fracturing of formations in bedrock by a pressurized liquid. The process involves the high-pressure injection of "fracking fluid" (primarily water, containing sand or other proppants suspended with the aid of thickening agents) into a wellbore to create cracks in the deep rock formations through which natural gas, petroleum ...
The wet material is placed in the extractor, which has a wall of perforated metal, generally stainless steel. The internal drum rotates at high speed, thus throwing out the water contained in it. The use of the hydroextractor significantly reduces the energy required to dry any material.
The WorkStar is commonly custom-built, and has many different layouts. All models are available as 4x2, [a] the 7300-7500 have all-wheel drive 4x4 models. The 7400-7600 are available with both 6x4 and 6x6 tandems, and the 7600 can have an unusual 8x6 layout, with a three driven axle "tridem".
Refurbishments have been carried out for the 7300 series fleet since 2008. [4] The first set to be refurbished, 8-car set 7320, returned to service on 8 September 2008. [5] It received a restyled front end with LED destination displays, as well as LCD information displays in the interior. [4]
A number of undersea oil surveys were carried out, including one led by the famous marine explorer Jacques Cousteau. [51] [52] In 1958, a floating platform rig was towed from Hamburg, Germany, and positioned over the Umm Shaif pearl bed, in Abu Dhabi waters, where drilling began. In March, it struck oil in the Upper Thamama rock formation.
Western Australia (WA) is the westernmost state of Australia.It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east.