Blast joints and flow couplings are essential components in the oil and gas industry, particularly in pipeline systems. They serve distinct purposes but often work together to ensure efficient and safe fluid flow.
A blast joint is shorter in length than standard tubular joint. Built with a heavy wall pipe it is incorporated in the production string to facilitate production across any perforated interval and zone. Blast Joints are manufactured to the following specs connections, lengths, weights and material grade.
Crossover Blast Joints are heavy wall pin by box connectors used in tubing strings and are designed to minimize the effect of external erosive action caused by production fluids. Blast joints are located opposite the location of perforations in the production casing or just below the tubing hanger in sand frac designs. Crossover blast joints are manufactured from seamless mechanical tube in sizes ranging from 2 3/8" to 4 1/2" OD. Any length, grade of material, and threading is available at the customers request. Typical lengths are 10' and 20'. Both API and Premium threads are available.
Crossover Flow Couplings are heavy wall box by box connectors used in tubing strings and are designed to minimize the effect of internal erosive action caused by production fluids. Flow couplings are located just above or below Landing Nipples, Safety Valves or Control Devices where turbulent flow problems are likely to occur. Crossover flow couplings are manufactured from seamless mechanical tube in sizes ranging from 2 3/8" to 4 1/2" OD. Any length, grade of material, and threading is available at the customers request. Typical lengths are 3' and 6'. Both API and Premium threads are available.
Flow Couplings and Blast Joints are specialty Tubulars designed to protect the tubing string from excessive wear and premature failure. Flow Couplings (at left) can be installed above and below tubing nipples. During production turbulence can exist above and below a nipple due to its restriction. The Flow Coupling, having thicker walls than the production tubing onto which it is made up,accepts the turbulence as opposed to the tubing.
Blast Joints can be situated in the tubing string opposite open and flowing perforations. Here,erosional forces can be extreme. And like the Flow Coupling,the Blast Joint has thicker walls and tolerates the erosion better than the tubing.
As the most professional manufacturer of downhole drilling and completion tools in China, China Vigor's Flow Couplings and Blast Joints produced by Vigor have been used at customer sites and have been recognized by customers. China Vigor always insists on investing a lot of money in product research and development every year to ensure that our products can meet the evolving needs of the oil industry, which also ensures that we can always provide customers with the best quality products. If you are interested in Vigor's drilling and completion logging tools, please do not hesitate to get in touch with us to get the most professional products and the best quality service.
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