Casing Pipe

定义 无缝钢管，用于支撑油或气井壁，属于一次性消耗材料。套管消耗量占所有油井管的70％。根据使用情况，套管可分为导管套管，表层套管，技术套管和油岩层套管。   套管有五种等级，分别是J55，K55，N80，L80，P110。根据套管末端螺纹和联接形式，它由STC，LTC和BTC组成。STC表示短螺纹连接，LTC表示长螺纹连接，BTC表示支撑螺纹连接。通常，长度由R1，R2和R3组成。R1的范围是4.88至7.62m，R2的范围是7.621至10.36m，R3的范围是10.36至14.63m。   套管特性   Petroleum industry is an industry that uses a large number of oil pipes, and oil pipes play an important role in the oil industry: 1. Oil pipes are used in large quantities and spend a lot of money, which has great potential for saving expenses and reducing costs. The consumption of oil well pipes can be calculated according to the annual drilling footage. According to the specific situation in China, 62kg of oil well pipe is needed for every 1m of drilling, including 48kg of casing and 10kg of oil pipe. 3kg drill pipe and 0.5kg drill collar; 2. The mechanical and environmental behaviors of oil pipes have an important influence on the adoption of advanced technologies and the increase of production and efficiency in the oil industry. 3. The failure loss of oil pipe is huge, and its safety, reliability and service life are of great importance to the oil industry.   FAQ 1Is there any Anti corrosive protection for steel pipes?    It is made of high-density polyethylene wrapped on the outer surface of steel pipe, which has high mechanical strength and excellent corrosion resistance, and can protect it from damage caused by external factors during transportation, installation and use.   2.What is the difference between oil tubing and casing pipe?    The main difference between oil tubing and casing pipe is that oil tubing is used for oil production, gas production, water injection and acid fracturing in oil wells. Casing pipe refers to the reservoir casing used when drilling to the target layer (oil-bearing and gas-bearing horizon). It is mainly used for sealing all oil and gas layers and upper exposed strata. Inside the oil casing is an oil layer.   3.What is Anti-corrosion measures of oil casing?   A，首先要特别注意水质标准，严格水质检测和管理。实行污水单独注入，加强对主输水管道的清洁，使站内和井底水质达到标准，并减少腐蚀源向环形空间的引入；B，对于新投产的注水井，主要采用添加杀菌剂的环形保护液，并形成定期添加的系统；C，鉴于机械磨损对油套管腐蚀的加速作用，建议在油管接头或扶正器上在有严重偏差的部位加一个橡胶圈，以免油管刮伤油管和一侧接触操作和注水时的外壳；可以定期向环空注射℃ 以杀死结垢下的SRB；E.不建议在有效控制注水井套管腐蚀之前普及阴极保护和涂层套管。   有关更多信息，请转到我们网站的“ 解决方案和客户-您可能会关注”  页面。