Releasable connection for coiled tubing drilling apparatus
First Claim
Patent Images
1. A releasable connection apparatus for coiled tubing, comprising:
- an outer body configured with an inner volume;
a mandrel located at least partially within the outer body and in the inner volume, the mandrel configured to be actuated by an operator from a first non-actuated position to a second actuated position;
a plug located within the outer body, the plug movable between a first position to a second position, the plug actuated by the mandrel, wherein when the plug is in the first position, a clear flowpath is maintained for materials flowing past the mandrel and wherein when the plug is in the second position, the flowpath is at least partially blocked, wherein in the second position an increase in fluid pressure occurs signaling actuation of the releasable connection; and
a structural weakpoint apparatus, wherein the structural weakpoint apparatus is configured to structurally fail at a predetermined tensile load placed upon the releasable connection apparatus, wherein the structural weakpoint apparatus is configured at a lower end of the mandrel.
1 Assignment
0 Petitions
Accused Products
Abstract
A releasable connection for coiled tubing drilling apparatus is presented wherein the connection has an outer body configured with an inner volume, a mandrel located at least partially within the outer body and in the inner volume, a plug located with the outer body and a structural weakpoint apparatus, wherein the structural weakpoint apparatus is configured to structurally fail at a predetermined tensile load placed upon the releasable connection apparatus, wherein the structural weakpoint apparatus is configured at a lower end of the mandrel.
20 Citations
16 Claims
-
1. A releasable connection apparatus for coiled tubing, comprising:
-
an outer body configured with an inner volume; a mandrel located at least partially within the outer body and in the inner volume, the mandrel configured to be actuated by an operator from a first non-actuated position to a second actuated position; a plug located within the outer body, the plug movable between a first position to a second position, the plug actuated by the mandrel, wherein when the plug is in the first position, a clear flowpath is maintained for materials flowing past the mandrel and wherein when the plug is in the second position, the flowpath is at least partially blocked, wherein in the second position an increase in fluid pressure occurs signaling actuation of the releasable connection; and a structural weakpoint apparatus, wherein the structural weakpoint apparatus is configured to structurally fail at a predetermined tensile load placed upon the releasable connection apparatus, wherein the structural weakpoint apparatus is configured at a lower end of the mandrel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A releasable connection apparatus, comprising:
-
an outer body configured with an inner volume; a mandrel located at least partially within the outer body and in the inner volume, the mandrel configured to be actuated from a first non-actuated position to a second actuated position; a solenoid connected to the mandrel, wherein the solenoid is configured to actuate the mandrel from the first non-actuated position to the second actuated position; a restriction arrangement located within the outer body, the restriction arrangement movable between a first position to a second position, wherein when the restriction arrangement is in the first position, a clear flowpath is maintained for materials flowing within the outer body and wherein when the restriction arrangement is in the second position, the flowpath is at least partially blocked; and a structural weakpoint apparatus, wherein the structural weakpoint apparatus is configured to structurally fail at a predetermined tensile load placed upon the releasable connection apparatus. - View Dependent Claims (9, 10, 11, 12)
-
-
13. A method to indicate actuation of a coiled tubing releasable connection apparatus, comprising:
-
providing a coiled tubing arrangement in a downhole configuration, wherein the coiled tubing arrangement is provided with at least one coiled tubing releasable connection apparatus; conducting a tensile pull on the coiled tubing arrangement, wherein the tensile pull initiates a release of the at least one coiled tubing releasable connection apparatus; impeding a flow within the coiled tubing arrangement such that a pressure increase is created in the flow after initiation of the release of the at least one coiled tubing releasable connection apparatus; and sensing the pressure increase from the impeded flow. - View Dependent Claims (14, 15, 16)
-
Specification