PATENT CLAIM ANALYSIS

Application Number: 15912159
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["166", "308100"]

Abstract:
A fracturing system includes a fracturing spool that mounts onto a wellhead assembly for injecting fracturing fluid into a well beneath the wellhead assembly. The fracturing system includes an isolation sleeve and fracturing spool. The isolation sleeve inserts in an axial bore of the fracturing spool, and has a lower end that extends into the wellhead to isolate and protect portions of the wellhead assembly from the fracturing fluid. A groove in an inner surface of the fracturing spool receives an annular seal for sealing between the isolation sleeve and fracturing spool. Injecting a viscous fluid into the groove energizes the seal, and blocks high pressure fracturing fluid from flowing between the isolation sleeve and fracturing spool.

Claim (Index 18):
A method of fracturing a wellbore with a fracturing fluid through a wellhead assembly having a main bore with a longitudinal axis, a hanger in the main bore with a coaxial hanger bore, and production tubing in the main bore, the method comprising:\n providing a fracturing spool with a spool bore; mounting the fracturing spool on the wellhead assembly; providing an annular isolation sleeve with isolation sleeve threads adjacent a lower end of the isolation sleeve and an isolation sleeve seal ring on an exterior of the isolation sleeve; inserting the isolation sleeve into the spool bore and the lower end of the isolation sleeve into the hanger bore and sealingly engaging the isolation sleeve seal ring with the hanger bore to shield a component within the wellhead assembly from the fracturing fluid; engaging the isolation sleeve threads with a set of hanger threads by rotating the isolation sleeve relative to the hanger, wherein the isolation sleeve includes a reduced diameter portion between a bottom of the isolation sleeve seal ring and the isolation sleeve threads, the reduced diameter portion having a smaller diameter than an isolation sleeve diameter that forms at least a portion of the isolation sleeve seal ring; and delivering fracturing fluid through the isolation sleeve and to the wellbore to fracture the wellbore.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 90.0
- Lexical Diversity: 2.2963
- Patent Class: 166.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13944467', '13944028', '14085255', '12507864', '11025453']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8133962918286893
- 35 USC 102 Novelty (BERT): 0.5652580334580984
- Combined Prediction Score: 0.7885824659916302
- Mean Citation Score: 333.84428799999995
- Max Citation Score: 454.07407
- Similarity Product: 426.2384455902457

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