Hanger is the key of Through Drill Pipe Logging System in horizontal well logging, and it is comprised of the upper hanger and lower hanger. Because of the reliable connection between the upper and lower hangers, the tool string will be conveyed by mud circulation and withdrawn via the cable. During operating, the upper hanger will release the lower one, and the upper hanger is pulled out of the borehole with cable, meanwhile, the lower one should keep the tool string reliably hang at a landing point near the bottom end of drill pipe and realize logging as the drill pipe is lifted up. During the conveyance of the tool string, the hanger can communicate with surface system normally because of the wireless communication between upper hanger and lower hanger.
Simple, safe and reliable to release or grab.
Well-adapted to the various well conditions.
Oil - free balanced mechanical drive system.
Wavenology EM -Full Wave Transient Electromagnetic Field Solver
Wavenology EM is a general-purpose 3D full-wave based field-circuit-particle co-simulation software package for the design of high-speed electronic circuits, smart antenna systems, non-linear quantum, RF/microwave and optical devices. Wavenology EM utilizes 3D full-wave domain decomposition and discontinuous Galerkin techniques combining the enlarged cell technique (ECT, an improved version of the conformal finite difference time-domain method (FDTD)), spectral element time-domain (SETD) method, and finite-element time-domain (FETD) method to simulate electromagnetic wave propagation and scattering behaviors in complex multiscale environments. It also combines SPICE circuit solver and particle in cell trajectory solver within the full-wave package so that the user can perform co-design of circuit controlled, reconfigurable transmitters and receivers, investigate system-level.
non-linear EMC/EMI issues and model novel quantum devices.