Buckling of coiled tubing in operation

In the process of coiled tubing running in, due to the influence of the gravity of the string itself and the friction between the string and the well wall, the string changes from the initial approximate linear state to the curve state when it is under pressure, which is the buckling of the string.

2020-05-07T17:19:47+08:00 May 7th, 2020|

Application scope of coiled tubing drilling

According to the types of drilling, there are two kinds of common coiled tubing: directional re drilling and vertical well drilling. According to the process, there are under balanced drilling, balanced drilling and over balanced drilling.

2020-02-25T16:11:18+08:00 February 25th, 2020|

Development of coiled tubing drilling technology

Coiled tubing originated during World War II and has been used in the oil industry since the 1960s. In 1962, the first coiled tubing operation equipment in the world. In the mid-1970s, there were more than 200 sets, and in 1993, there were about 561 sets. In February 2001, there were about 850 sets.

2020-02-11T12:02:03+08:00 February 11th, 2020|

Application prospect of coiled tubing

Coiled tubing workover technology has represented the development direction of the current world workover technology, and will be widely used as a common and efficient operation technology in the world.

2020-01-13T10:59:22+08:00 January 13th, 2020|

Introduction to coiled tubing drilling technology

The development and application of coiled tubing drilling technology began in the early 1990s, and it is still in the primary stage of research and development. In 1991, the United States, Canada and France successively successfully tested and applied CT drilling technology. In recent years, the number of wells drilled with coiled tubing in the world has increased dramatically.

2020-01-06T11:03:16+08:00 January 6th, 2020|

Some ideas on improving the quality of tubing thread

It is difficult to process the high quality tubing thread only by CNC lathe. It can only be realized by controlling the quality of raw materials from the source and implementing total quality control in the upsetting process of tube blank.

2019-12-30T12:23:51+08:00 December 30th, 2019|