PATENT CLAIM ANALYSIS

Application Number: 16028734
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["507", "242000"]

Abstract:
Copolymers containing acryloylmorpholine and vinylimidazole, and optionally vinylcaprolactam and/or n-vinyl pyrrolidone, have shown superior results in hydrate inhibition tests at conditions of 7° C. subcooling dosed at 1 vol % based on the water cut of the system fluids. The copolymer product has also passed high TDS (total dissolved solids) brine compatibility tests and secondary property tests including foaming and hot injection tests which make it useful as a kinetic hydrate inhibitor in gas production systems susceptible to the formation of natural gas hydrates.

Claim (Index 9):
A hydrocarbon well comprising:\n an annular space; and a fluid in the annular space, the fluid being inhibited against hydrate formation in the presence of water at hydrate forming conditions, and the fluid comprising\n brine; \n hydrate-forming guest molecules; and \n at least one kinetic hydrate inhibitor (KHI) in an amount from about 1 to about 15 vol % based on the water in the fluid to inhibit formation of hydrates at hydrate forming conditions, where the KHI is selected from the group consisting of:\n a copolymer comprising monomers selected from the group consisting of acryloylmorpholine, vinylimidazole, n-vinyl pyrrolidone and combinations thereof; and \n a terpolymer selected from the group consisting of:\n acryloylmorpholine, vinylimidazole, and vinylcaprolactam monomers, \n vinylimidazole, vinylcaprolactam, and n-vinyl pyrrolidone monomers, and \n acryloylmorpholine, vinylimidazole, and n-vinyl pyrrolidone monomers.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 95.0
- Lexical Diversity: 1.21622
- Patent Class: 507.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14802725', '13648491', '12641526', '13053497', '12507341']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.764488033958892
- 35 USC 102 Novelty (BERT): 0.5773353973442326
- Combined Prediction Score: 0.7457727702974261
- Mean Citation Score: 370.50801600000005
- Max Citation Score: 485.61374000000006
- Similarity Product: 439.6406883549441

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