Wellbore treatment apparatus and method
AssigneeSchlumberger Technology Corporation
InventorPaul Reid
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Abstract
A treatment apparatus and method for wellbore instability is described including a caliper with one or more radially extending arms which are capable of extending and retracting movement in a radial direction and a fluid supply facility to deliver treatment fluid from the ends of the arms to the wellbore wall, with a sensing and valve mechanism such that in use fluid is being delivered from the end of any extended arm to a breakout region of the wellbore where there is instability.
Claims14
An apparatus for treating a wellbore comprising:
- (a) a caliper with one or more radially extending arms which are capable of extending and retracting movement in a radial direction and detecting an inner diameter of the wellbore, and
- (b) a fluid delivery mechanism capable of delivering fluid to a wall of the wellbore from at least one of said one or more radially extending arms.
A method of treating wellbore instability, the method comprising rotating within the wellbore a caliper having one or more radially extending arms which are capable of extending and retracting in a radial direction as ends of the arms engage the wellbore so that any arm encountering a breakout region, where the wellbore is enlarged, is extended and tends to become located in said region, and delivering treatment fluid to the ends of any extended arm from which the fluid is applied to a breakout region in order to stabilise the breakout region.
Dependencies are inferred from the claim text.