PATENT CLAIM ANALYSIS

Application Number: 16249089
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-05
Patent Classification: ["166", "363000"]

Abstract:
A dual gradient drilling system includes a subsea blowout preventer disposed above a wellhead, the subsea blowout preventer having a central lumen configured to provide access to a wellbore, a lower section of a marine riser fluidly connected to the subsea blowout preventer, a closed-hydraulic positive displacement subsea pump system fluidly connected to the lower section of the marine riser and disposed at a predetermined depth, an annular sealing system disposed above the closed-hydraulic positive displacement subsea pump system, and an independent mud return line fluidly connecting one or more pump heads of the closed-hydraulic positive displacement subsea pump system to a choke manifold disposed on a floating platform of a rig.

Claim (Index 21):
The dual gradient drilling system of  claim 1 , wherein an upper section of the marine riser disposed above the annular sealing system is filled with fluids sufficient to reduce or eliminate a pressure differential across the annular sealing device.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 99.0
- Lexical Diversity: 2.07018
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['16249186', '16249135', '14170666', '12936254', '15258504']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8633139942639946
- 35 USC 102 Novelty (BERT): 0.6266157095373808
- Combined Prediction Score: 0.8396441657913332
- Mean Citation Score: 498.339424
- Max Citation Score: 680.5001
- Similarity Product: 542.3396721242368

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

Dataset: test