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 17):
An offshore floating facility for oil and gas well drilling and/or production, comprising:\n a monohull vessel having a vertical opening referred to as a moonpool, wherein the vessel has bulkhead and deck structures, and wherein the vessel has an upper drilling deck that surrounds the moonpool, the moonpool having an area and a centerline; a drilling derrick with a primary operating device; mooring lines attached to the vessel for anchoring the vessel; and a wellbay assembly located completely in the moonpool, wherein the wellbay assembly comprises a grid defining an array of two or more structurally distinct slots, each slot having one set of a corresponding two or more sets of dynamic wire rope riser tensioners therein, and wherein each of the corresponding two or more sets of dynamic wire rope riser tensioners is designed and built to hold one of a set of two or more risers in tension; wherein the vessel has a pair of supports, wherein the grid rests on the pair of supports and is configured to be only laterally movable on the pair of supports along a first axis laterally along the area of the moonpool, wherein the vessel has a pair of beams or rails, wherein the drilling derrick and primary operating device are received on the pair of beams or rails and are only movable orthogonally along a second axis to either side of the centerline of the moonpool on the pair of beams and rails; whereby any one of the set of two or more risers can be accessed directly for the oil and gas well drilling and/or production.

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): 0.8127044785937757
- 35 USC 102 Novelty (BERT): 0.6839474446429947
- Combined Prediction Score: 0.7998287751986977
- Mean Citation Score: 453.166574
- Max Citation Score: 850.47266
- Similarity Product: 689.073459001857

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