Oil casing is the lifeline of oil wells to maintain operation|Franchised dealer of Hengyang Valin Steel Tube Co., Ltd.-Cangzhou Kunyuan

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Oil casing is the lifeline of oil wells to maintain operation

Oil casing is the lifeline of oil wells to maintain operation. The material is usually 37mn5, standard API5A, steel grade J55. It varies from the depth of the well to its length, which is usually longer. In order to ensure functionality and facilitate transportation, the oil casing structure is designed to be transported to the oil field after a single pipe body and collar thread, and is connected to the oil field at the end. It can only be used after the length reaches the required length.

In order to enhance the strength and anti-loosening control of the threaded connection, the belt must be welded after the threaded connection of the pipe body. In addition to the high quality requirements for the oil casing body, the quality requirements for welding are also very strict due to the harsh environment of the oil casing. Through the above welding analysis and tests, a welding process that meets the requirements has been obtained, which provides an extremely important basis for the future development of the welding direction of oil casing.

Installing oil casing on the construction sidewalk includes reinforcing the construction work belt. The reinforcement of the construction work belt should be carried out on the side close to the highway. When cleaning the work belt, the work belt should be compressed to ensure the passage of construction machinery and equipment. Loose soil and areas immersed in water for a long time should be mechanically leveled, then a layer of geotextile should be laid, and 300 mm of compacted soil should be manually spread. The geotextile is then folded and superimposed on the layer of soil, and then 200 mm of wet soil is mechanically laid, and then rolled with a bulldozer.

The construction sidewalk should be smooth and have sufficient compressive strength to ensure the safety of construction equipment. The width of the construction sidewalk is 6 meters, and the turning radius at the corners is greater than 18 meters. Sidewalks connecting the construction zone to the highway should be gently connected to the main road.