... Abstract Perforating multiple zones in a single deep-water well, where the zonal pressures between reservoirs differ significantly, at times in excess of 2000 psi, presents substantial challenges in developing and maintaining sufficient dynamic underbalance for effective perforation cleanout...

... Abstract The BP Operated Rhum Field is a North Sea High Pressure High Temperature lean gas field. A key design requirement for successful development well planning and execution was to evaluate Overbalance and Dynamic Underbalance perforating techniques for their potential to optimise...

... system upstream oil & gas packer pbr system otc 15210 single trip liner horizontal section packer underbalance configuration OTC 15210 A Novel Underbalanced-Perforating Gun Deployment System Using Production Packer Technology Successfully Completes Offshore Horizontal Wells in a Single...

... well productivity breakthrough gun string ball valve hwou gomersall perforation completion installation and operations long horizontal well debris valve otc 8532 productivity horizontal well andrew field operator underbalance balance perforation fiv tool OTC 8532 Underbalance...

... of a kicking well. instrumentation wellbore pressure instrument pit gain detection instrument annular pressure drilling water depth evolution penetration flow rate underbalance instrumentation requirement upstream oil & gas sensitivity operation exxon production research co...