Patent ID: 8261829
Filing Date: 2012-09-11
Classification: E21B

Abstract:
1. A method of retrieval of material, having broken lines above the material, from a cased well, the method comprising: isolating, from the well casing, the broken lines above the material to be retrieved, thereby creating a substantially axial work passage; grasping the material to be removed through the substantially axial work passage; and pulling the material to be retrieved from the well; wherein said isolating comprises: lowering, into the well, a shroud having a lower splayed end, wherein the outer diameter of the splayed end is sized to the inner diameter of the casing of the well and the lines such that the gap between the casing and the splayed end is less than the thickness of the lines; rotating in an oscillatory motion the lower splayed end at least a portion of the time when the lower splayed end is in contact with at least one of the broken lines; covering at least a portion of the material to be retrieved with the shroud; and resting the shroud on the material to be retrieved.