Coiled tubing, current advanced operation technology in OCTG tubing

OCTG tubing is a pipeline which transports crude oil and nature gas from hydrocarbon reservoir to the surface after the completion of drilling. It’s one of the main products of OCTG and it can withstand the pressure generated in the process of mining. While Coiled tubing technology is the current international advanced operation technology. Coiled tubing is made of low carbon alloy steel pipe and has good flexibility. A roll of coiled tubing is thousands of meters long, which can be used to replace conventional tubing for a lot of work. Coiled tubing operation equipment has the characteristics of pressure operation and continuous up and down.

History of coiled tubing

In 1962, the United States California oil companies and Bowen Oil Tools Company jointly developed the first coiled tubing light workover device. The coiled tubing diameter was 33.4 mm, which  mainly used for sand flushing operation of oil and gas wells in the Gulf of Mexico. 30 years after the birth of the coiled tubing, its value was really understood, to the 1990s, coiled tubing technology has been the development by leaps and bounds. Coiled tubing device has been known as the "universal operating machine", widely used in the oil and gas well workover, drilling, completion, well logging throughout the whole process of the exploitation of oil and gas.

 

The development of the number of coiled tubing equipment is as follows: 1962, the first coiled tubing equipment was born; in the mid-1970s, approximately more than 200; in 1993, about 561; at the beginning of 2001, about 850; at the beginning of 2004, about 1050 units, mainly distributed in North America, South America and Europe; At the beginning of 2011, about 1881, China has 61.