PATENT CLAIM ANALYSIS

Application Number: 15760171
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["166", "299000"]

Abstract:
A “back-off” tool comprises a magazine cylinder having one distal end of a long mast rod secured to the lower end-face of a magazine cylinder. The magazine cylinder is attached to an electrically detonated firing head. A first plurality of blind hole cavities penetrate the magazine cylinder end-face around the mast rod junction. A second plurality of elongated detonation cord ends are inserted into high temperature grease filled magazine cylinder cavities. From the cavities, the detonation cord lengths are bound to the rod surface along the rod length by non-metallic cord. The tool assembly is secured to the end of a wireline or tubing string for downhole placement and detonation.

Claim (Index 21):
A method of releasing an intended threaded pipe joint within a pipe string comprising the steps of;\n securing one end of an elongated mast rod to a magazine cylinder comprising a booster explosive and a first plurality of cavities; tabulating a value representing a weight of an explosive distributed over a unit length of detonation cord corresponding to a type of pipe, a size of pipe, a well depth location of an intended threaded pipe joint, and a density of fluid within a well, such that when the explosive is detonated adjacent to the intended threaded pipe joint, while under moderate torque, the release of said threaded pipe is initiated; selecting a second plurality of elongated detonation cords corresponding to the tabulated value for said intended threaded pipe joint and said well depth location within a flow bore of said intended pipe string adjacent to said intended threaded pipe joint; inserting distal ends respective to one or more of the selected plurality of elongated detonation cords into respective magazine cylinder cavities; and applying a moderate torque in a thread separation direction to the said pipe string simultaneously with detonating the selected plurality of elongated detonation cords for release of said intended threaded pipe joint.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 90.0
- Lexical Diversity: 1.72464
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15759776', '14858816', '15256281', '14120409', '13317657']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7743276358163985
- 35 USC 102 Novelty (BERT): 0.5193027709094182
- Combined Prediction Score: 0.7488251493257004
- Mean Citation Score: 285.8624779999999
- Max Citation Score: 346.9574
- Similarity Product: 286.21364895858767

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test