Anchor assemblies for use on a cable and processes for using same

A process for conveying an anchor assembly into a downhole casing, comprising:

• conveying the anchor assembly via a cable to a location of interest within the downhole casing, the anchor assembly comprising a first anchor releasably connected to a second anchor, wherein:
• the first anchor defines a bore therethrough that the cable passes through such that the cable is connected to the second anchor, and
• the second anchor comprises one or more switchable magnets each configured to switch between a non-magnetized state and a magnetized state;
• activating the first anchor to cause a plurality of arms to radially expand outward with a sufficient radial force to secure the first anchor to an inner surface of the downhole casing;
• releasing the second anchor from the first anchor upon activation of the first anchor;
• moving the second anchor further into the downhole casing away from the first anchor such that a portion of the cable spans a distance between the first anchor and the second anchor;
• switching the one or more switchable magnets from the non-magnetized state to the magnetized state to secure the second anchor to the inner surface of the downhole casing;
• and
• applying a tension to the cable from a surface location by applying a force to the cable.

A process for conveying an anchor assembly into a downhole casing, comprising:

• conveying the anchor assembly via a cable to a location of interest within the downhole casing, the anchor assembly comprising a first anchor releasably connected to a second anchor, wherein:
• the first anchor defines a bore therethrough that the cable passes through such that the cable is connected to the second anchor,
• the first anchor comprises a plurality of wheels configured to engage with the cable disposed within the bore defined by the first anchor
• the first anchor comprises one or more switchable magnets each configured to switch between a non-magnetized state and a magnetized state, and
• the second anchor comprises one or more switchable magnets each configured to switch between a non-magnetized state and a magnetized state;
• switching the one or more switchable magnets in the second anchor from the non-magnetized state to the magnetized state to secure the second anchor to an inner surface of the downhole casing;
• releasing the first anchor from the second anchor upon activation of the second anchor;
• activating the plurality of wheels within the first anchor to move the first anchor toward a surface location and away from the second anchor such that a portion of the cable spans a distance between the first anchor and the second anchor;
• switching the one or more switchable magnets in the first anchor from the non-magnetized state to the magnetized state to secure the first anchor to the inner surface of the downhole casing;
• and
• applying a tension to the cable from a surface location by applying a force to the cable.