Invention Application
US20150107855A1 DEVICE THAT UNDERGOES A CHANGE IN SPECIFIC GRAVITY DUE TO RELEASE OF A WEIGHT 审中-公开
释放重量的特定重大变化的设备

DEVICE THAT UNDERGOES A CHANGE IN SPECIFIC GRAVITY DUE TO RELEASE OF A WEIGHT
Abstract:
A method of performing an operation in a wellbore using a device, the method comprises: introducing the device into the wellbore, wherein the device initially comprises a body and a weight; causing or allowing the weight to become disassociated from the body, wherein after disassociation, the device comprises the body, and wherein the specific gravity of the device decreases after the weight becomes disassociated from the body; and causing or allowing at least the body to move towards a wellhead of the wellbore after the weight is disassociated from the body.
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