BL-2T Premium Connection

BL-2T is multifunction connection. The connection can minimize risk caused by load of pressure, temperature, bend, and compress. 

• Thread design

• spec. and thread type

  Ø 2 3/8˝ ～2 7/8˝ – 8TPI Ø

  3 1/2˝ ～4 1/2˝ – 6TPI Ø

  5˝ ～7 3/4˝ – 5TPI Ø 8

  5/8˝ ～133/8˝ – 4TPI

  Taper1:16

  
  

Main feature

• Anti-bend ,compress and torque

• reliable seal ability on complicated load service

• Easy to use and repair

• Long term successful experience in oil field

Main application

• Deep well

• supper deep well

• High pressure gas well

Reinforced metal to metal seal

• Even if in most severe load condition (for instance: in directional well), metal to metal seal can provide supper seal function.

• After several make-up and make-down, it can keep seal integrity.

• The geometrical shape of seal surface can prevent wearing out.

Modified reverse hook thread design

• with -3° reverse hook thread type on thread surface, it can not only improve connection strength , but also improve anti-compress pressure.

• With better structure strength include resistance to bend and compress, this connection is suitable for horizontal well.

• Even if few thread compound, modified thread structure decrease the risk of wearing out.

Negative torque shoulder

• Negative torque shoulder provide positive torque stop. So, the make-up torque is accurate. At the same time, the wedge effect caused by the negative torque shoulder provide superior structural strength.

• Though modified shoulder design, it can bear bad service condition such as bend caused by inner or outer pressure.

Inner hole with lengthened shoulder design

• Inner flat design reduces the gas and liquid turbulence in the pipe, so decrease lower the energy loss.

Coupling design

• The connection effectivity reach 100% of pipe strength by coupling design such as covering running out of threading; longer inner shoulder , more equivalent sectional area than pipe body.