| 摘要 |
The invention relates to a device for examining a tubular channel, the device comprising a three-way valve, buoyancy means, pressure means, a vent line, at ¿east one sensor and computation means; wherein the three-way valve controls the fluid flow between the pressure means and the buoyancy means and between the buoyancy means and the vent line; the computation means is communicatively coupled to the at least one sensor and adapted to generate a control signal based on data received from the at least one sensor; and wherein the pressure means is fluidly coupled to the buoyancy means via the three-way valve such that a fluid may flow from the pressure means to the buoyancy means or from the buoyancy means to the surroundings of the device via the vent line; and wherein the computation means is communicatively coupled to the three-way valve and controls said three-way valve via the control signal. Thereby, the invention is able to examine e.g. oil wel containing obstructions such as wash¿outs and/or side tracks and/or non-linear parts in open hole completions of the well. |
