Methods and apparatus for borehole sensing including downhole tension sensing
AssigneeSchlumberger Technology Corporation
InventorsLES NUTT, TSUTOMU YAMATE, MASAHIRO KAMATA
Life of this patent
Estimating the term…
Abstract
The present disclosure provides, among other things, apparatuses and methods for sensing subsurface data. One embodiment comprises borehole conveyance system tool, the borehole conveyance system tool comprising a conveyance, a sensor array disposed on the conveyance, and an acquisition electronics section disposed on the conveyance distal of the sensor array. One embodiment includes at least one downhole tension sensor to help indicate when a tool is stuck and what part of the tool is stuck.
Claims31
An apparatus, comprising:
- a borehole conveyance system tool, the borehole conveyance system tool comprising:
- a conveyance;
- a sensor array disposed on the conveyance;
- an acquisition electronics section disposed on the conveyance distal of the sensor array.
A method, comprising:
- conveying a seismic sensing tool into a borehole, the seismic sensing tool comprising a sensor array and an acquisition electronics section disposed distal of the of sensor array;
- weighing down the sensor array with the acquisition electronics section.
An apparatus, comprising:
- an acoustic logging tool, the acoustic logging tool comprising:
- a conveyance;
- an acquisition electronics section disposed on the conveyance;
- a sensor array disposed on the conveyance;
- at least one tension meter capable of measuring and reporting a tension value local to the acquisition electronics section and the sensor array.
An apparatus, comprising:
- an acoustic logging tool fisher, the acoustic logging tool fisher comprising:
- a hollow mandrel having a first end attachable to a drill pipe and a second end, the hollow mandrel comprising passage therethrough;
- an open-mouth taper at the second end;
- an acoustic logging tool grabbing mechanism.
A method, comprising:
- fishing out a stuck logging tool, comprising:
- feeding a hollow fishing tool over a wire line cable;
- grabbing the logging tool;
- retrieving the logging tool.
Dependencies are inferred from the claim text.