Patent ID: 9637983
Date: 2017-05-02
CPC Classifications: E21B,F16L

Claim:
1. A casing-connection for use in a downhole wellbore comprising: a. a first sub having a bored-through inside diameter having a nominal inside diameter similar to a nominal inside diameter of a first casing to which it is connected, and comprising b. a second sub having a bored-through inside diameter having a nominal inside diameter similar to a nominal inside diameter of a second casing to which it is connected, and comprising: c. an adjusting collar having an outside diameter similar to an outside diameter of the first casing or the second casing, and comprising: wherein sealing surfaces are formed at connections between the first circular radius face and the fourth circular radius face; between the second circular radius face and the third circular radius face; and between the second sub threaded portion and the adjusting collar threaded portion, wherein the inside diameter and outside diameter respectively of the casing connection, where the casing connection connects to at least one of the first casing or the second casing, is the same as the inside diameter and outside diameter respectively of the casing to which it is connected, and wherein bendability and rotatability of the casing connection is adjustable by tightening or loosening said threaded connection between said second sub and said adjustable collar.