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US 10,472,910 B2Granted
Systems and methods for holding wireline device against well
AssigneeSchlumberger Technology Corporation
InventorsJoseph Varkey, Maria Grisanti, Paul Wanjau, David Kim, William Brian Underhill
Life of this patent
Estimating the term…
Abstract
A system includes a cable and a toolstring. The toolstring may couple to the cable to enable the toolstring to be placed in a wellbore. The toolstring includes a sensor that can collect measurements relating to the wellbore. An electromagnetic or anchoring device may selectively hold the toolstring or the cable against a surface of the wellbore.
Claims11
A system comprising:
- a cable;
- a magnetic device having two halves with one half including an electromagnet, where the two halves come together to form a cylinder over the cable;
- and
- a toolstring configured to be coupled to the cable, wherein the toolstring is configured to be placed in a wellbore, wherein the toolstring comprises a sensor configured to obtain measurements within the wellbore;
- wherein the cable or the toolstring, or both, comprise an electromagnetic device configured to selectively hold the toolstring or the cable, or both, against a surface of the wellbore.
2 more elements
A method for improving a signal to noise ratio of a signal provided over a cable by a toolstring, comprising:
- lowering the cable and the toolstring into a wellbore;
- extending at least one arm of a tractor device coupled to the toolstring, wherein the at least one arm comprises a wheel;
- engaging the wheel of the tractor device against a surface of the wellbore, wherein engaging the wheel of the tractor device propels the toolstring and the cable into the wellbore;
- retracting the at least one arm of the tractor device, wherein retracting the at least one arm disengages the wheel from the surface of the wellbore;
- and
- attaching the toolstring to the surface of the wellbore using a magnetic device coupled to the toolstring;
- wherein the magnetic device comprises two halves with one half including an electromagnet, where the two halves come together to form a cylinder over the cable.
4 more elements
Dependencies are inferred from the claim text.