Methods of making multiple casing cuts

Methods of removing casing from a wellbore, the method including disposing a drilling tool assembly in a wellbore, the drilling tool assembly including a cutting device, a spearing device, and a jarring device. The methods further including activating the cutting device, cutting a first casing segme...

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Bibliographic Details
Main Authors TRYGVE BERTHELSEN, MARC HENDERSON, PRAFUL C. DESAI, JAMES E. SAYLOR III, JOSEPH V. HEBERT, ANTON J. DACH III, HARSHAD PATIL, MALCOLM PERSCHKE, RANDALL LOUIS HEBERT, THOMAS D. HELBERT
Format Patent
LanguageEnglish
Published 28.01.2010
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Summary:Methods of removing casing from a wellbore, the method including disposing a drilling tool assembly in a wellbore, the drilling tool assembly including a cutting device, a spearing device, and a jarring device. The methods further including activating the cutting device, cutting a first casing segment, deactivating the cutting device and activating a spearing device. The method further including engaging the spearing device with the first casing segment, activating the jarring device to free the first casing segment, and removing the first casing segment from the wellbore.
Bibliography:Application Number: AU20090202706