PATENT CLAIM ANALYSIS

Application Number: 15960724
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-08
Patent Classification: ["166", "354000"]

Abstract:
A mobile offshore drilling unit is converted to provide drilling, completion and workover access to multiple dry tree wells from a drilling derrick to allow production and export of oil and gas from high pressure, high temperature reservoirs in deep offshore waters. Existing practice has been for the drilling derrick on a production platform supporting dry tree wells to be moved over a fixed well slot. The present invention provides a movable wellbay that supports multiple top-tensioned subsea well tieback risers, which may be positioned directly below the derrick's rotary table and/or beneath another operating device. The use of top-tensioned subsea well tieback risers supported by the movable wellbay allows the converted facility to drill, complete, maintain, improve and produce from subsea wells through dry trees.

Claim (Index 12):
A system, comprising:\n (a) an offshore floating facility for oil and gas well drilling and/or production, the offshore floating facility comprising:\n a monohull vessel having a vertical opening referred to as a moonpool, wherein the monohull vessel has a bulkhead and one or more deck structures, and wherein the monohull vessel has an upper drilling deck that surrounds the moonpool; \n a drilling derrick with a primary operating device, the drilling derrick secured to the upper drilling deck over the moonpool at a single location over the moonpool; \n mooring lines attached to the monohull vessel for anchoring the monohull vessel, wherein the vessel is anchored; and \n a wellbay assembly located completely in the moonpool, wherein the entire wellbay assembly is configured to be laterally and transversely movable at least for aligning at the single location a top end of a first riser of a set of two or more risers and then aligning at the single location a top end of a second riser of the set of two or more risers below the drilling derrick, wherein the wellbay assembly has at least two sets of dynamic wire rope riser tensioners in an array of structurally distinct slots, and wherein each set of the at least two sets of dynamic wire rope riser tensioners is designed and built to hold one of the set of two or more risers in tension; and \n (b) one of the set of two or more risers extending between one of each set of the at least two sets of dynamic wire rope riser tensioners and one of one or more subterranean oil and/or gas wells.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 91.0
- Lexical Diversity: 1.57471
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15482064', '13641909', '13052585', '10466131', '12990357']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8050889285300832
- 35 USC 102 Novelty (BERT): 0.7134813724666044
- Combined Prediction Score: 0.7959281729237353
- Mean Citation Score: 453.166574
- Max Citation Score: 850.47266
- Similarity Product: 769.3527964735151

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

Dataset: test