Apparatus and Method for Cutting and Pulling of a Casing

A method for cutting and pulling of a casing by means of an apparatus comprising:

• a housing connected to a wired connection;
• a cutting tool arranged in connection with the housing, where said cutting tool is rotatable around a longitudinal axis of the housing and arranged to be able to provide at least one cut-out in the wall of the casing and to be able to cut the casing;
• and
• a holding device for controlled holding of the housing in the casing;
• wherein the apparatus is provided with at least one radially displaceable gripping means arranged to go into engagement with the at least one cut-out in the wall of the casing,
• the method comprising:
• bringing the apparatus down into the well;
• positioning the apparatus in order to carry out a first cut;
• carrying out the first cut;
• positioning the apparatus in order to carry out a second cut;
• carrying out the second cut;
• one of the first cut and the second cut comprising cutting of the casing;
• bringing at least one gripping means into engagement with at least one of the first and the second cut;
• and
• pulling the cut casing out of the well by means of the apparatus.

A method of cutting and pulling of a casing by means of the apparatus comprising:

• a housing connected to a wired connection;
• a cutting tool arranged in connection with the housing, where said cutting tool is rotatable around a longitudinal axis of the housing and arranged to be able to provide at least one cut-out in the wall of the casing and to be able to cut the casing;
• and
• a holding device for controlled holding of the housing in the casing;
• wherein the apparatus is provided with at least one radially displaceable gripping means arranged to go into engagement with the at least one cut-out in the wall of the casing,
• the method comprising:
• bringing the apparatus down into the well;
• positioning the apparatus in order to carry out at least one first cut;
• carrying out the at least one first cut;
• positioning the apparatus in order to carry out at least one second cut;
• carrying out the at least one second cut;
• one of the first cut and the second cut comprising peripheral cutting of the casing and the second of the at least one first cut and the at least one second cut comprises longitudinal cutting of the casing;
• positioning the apparatus in order to carry out at least two third cuts;
• carrying out the at least two third cuts;
• the at least two third cuts comprising cutting of at least two fingers;
• bringing the at least two gripping means into secure engagement with the at least two third cuts by pushing the at least two fingers out and bringing the gripping means into engagement with the edge of the cut casing;
• retracting the at least two gripping means while the locked engagement with the walls of the casing is maintained so that the walls of the casing are contracted as well;
• pulling the cut casing out of the well by means of the apparatus.