| 摘要 |
<p>A method of attaching a tubular (22) to an existing tubular (10) in a well without reducing the inside diameter of the well is described. A shoe (14, 19, 28, 32, 42, 48, 58, 66) is attached to the lower end of the existing lowermost casing or tubular, generally prior to the casing being cemented or otherwise secured in the wellbore. The shoe has a diameter larger than the inside diameter of the casing or tubular to which it is attached. Subsequently, a liner is run in until its top end is in the enlarged diameter region of the shoe. A hanger can be optionally used. The liner is expanded into the enlarged diameter so that the net result is that the inside diameter in the wellbore is not reduced by the addition of the liner.</p> |
