On-site well control operations place higher demands on the shearing capacity of the BOP, as well as the safety factor of the control system equipment and the volume of the accumulator. The BOP needs to be able to shear high-performance, thick-walled drill pipes and casings, and the volume of the accumulator of the BOP control system matched with the BOP group with shear gates has almost doubled. In view of the above working conditions, our company provides customers with large-capacity shearing gate BOPs, shear-specific remote control and other large-capacity shearing well control equipment solutions

Technical introduction of the solutionThe high-capacity shear blowout preventer adopts a large hydraulic cylinder or an additional booster hydraulic cylinder to increase its shear thrust. It can cut high-performance drill pipes such as S-135, V-150, thick-walled, and high-impact drill pipes, and can also shear the corresponding casing. Under special working conditions, the blowout preventer needs to achieve shearing with a certain pressure in the cavity (i.e., shearing under pressure). The blowout preventer needs to overcome the pressure in the cavity first and then perform shearing operations. Our company's blowout preventer can achieve shearing of high-performance drill pipes under pressure.The matching shear gate seal structure and blade design are reasonable, which can achieve the sealing of the rated working pressure after shearing within one shearing action. The sealing performance is reliable and can achieve multiple shearing. The shear knife can also use a detachable blade to meet the shearing requirements of different working conditions.The dedicated shear control system consists of a main accumulator group, a dedicated shear accumulator group and a dedicated shear control manifold. It is equipped with a dedicated high-pressure shear circuit to control the large-capacity shear blowout preventer, which not only reduces the volume of the remote-controlled accumulator group, but also meets the needs of large-capacity shear and improves the safety of the equipment.