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MPD_WELL apply to the drilling process, through the mud circulation rate, mud density, mud fluid compatibility, the ground slurry temperature, and wellbore annulus level geometric characteristics and other parameters to ensure that either a depth of underground wells designed for eye-safe stability tools. MPD_WELL including the controlled pressure (MPD) and under-voltage drilling (UBD) design. UBD corresponds to the density by controlling the underground reservoir to ensure no contamination (reservoir), while the MPD is used for precise control of drilling borehole annulus pressure profile, focusing on drilling to solve the problem of leakage and collapse. MPD technology can optimize the use of drilling, reduce non-productive time, reduce accidents and reduce the drilling into the casing under the number of layers in order to achieve security, economic drilling of its key technology is to identify safe pressure window, control annulus pressure.
The MPD_WELL Evaluation include: q Underbalanced drilling design, evaluation, prediction and analyses q Controlled pressure drilling design a) Continuous circulation system design and evaluation b) Pressurized Mud Cap design c) Control Mud Cap design d) Dual-pressure gradient design q Safe Borehole Stability Windows q 3D Display Well Track q The completion of drilling (including gas drilling) Design and Analysis q Controlled pressure parameters (working media compatibility / mud cap height / injection point position) range calculation q Formation water / oil / gas deal with phase-change q Fast displacement and the displacement design q Running casing calculation
q Temperature field(Heat conduction convection)calculation
q Downhole pressure distribution profile predicted
q Calculated parameters of rock mechanics
q Sensitivity analyses on key parameters
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