At present, with the rapid development of the shale gas industry, various domestic and foreign machinery manufacturing companies have focused their attention on the manufacture of shale gas equipment. Due to the late start of relevant domestic fields, in the early stage of the development of Fuling shale gas field, some key equipment technologies depended on foreign companies.
According to the person in charge of the R&D and design unit of the domestic equipment of the Fuling shale gas field, it is necessary to use the bridge plug in the staged fracturing of the shale gas horizontal section. In the past, the main shale gas fields in the Fuling shale gas field were the bridge plugs produced by the United States Halliburton Company and Baker Hughes Company. The price was only 150,000 yuan, and each well needed about 15 pieces. The cost of the purchase was as high as 2.2 million yuan. .
â€œBefore localization was achieved, we could only be â€œkicked neckâ€ by foreign companies.â€ The person in charge said that in order to solve the high cost problem, the R&D unit actively integrated technical resources to form a joint research and development force, according to the characteristics of shale gas development. After many trials, the company has finally developed a domestically produced composite bridge plug with good sealing, stability and pressure. The price is only 20,000 yuan. The use of a domestically produced composite bridge plug can reduce the equipment purchase cost of a well by nearly 2 million yuan.
In addition to the bridge plug, the recent Fuling shale gas field has also realized the localization of many equipment including â€œwell factoryâ€ drilling equipment, large-scale reservoir transformation equipment, and large-capacity coiled tubing equipment. In the development of Fuling shale gas, equipment investment accounts for about 25% of the total investment, and the localization of related equipment and technology has greatly reduced the cost of shale gas development.
A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe. A blind flange is a plate for covering or closing the end of a pipe. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together.
Although the word flange generally refers to the actual raised rim or lip of a fitting, many flanged plumbing fittings are themselves known as 'flanges':
There are many different flange standards to be found worldwide. To allow easy functionality and interchangeability, these are designed to have standardised dimensions. Common world standards include ASA/ASME (USA), PN/DIN (European), BS10 (British/Australian), and JIS/KS (Japanese/Korean). In the USA, ANSI stopped publishing B16.5 in 1996, and the standard is ASME B16.5
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