PATENT CLAIM ANALYSIS

Application Number: 15864776
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["507", "250000"]

Abstract:
A dual-phase acid-based fracturing composition with corrosion inhibitors and method for use in acid-based matrix and fracturing operations in oil and gas wells is provided. The composition includes an acid, a hydrocarbon, a hydrocarbon-soluble corrosion inhibitor, an acid-soluble corrosion inhibitor, and an acid-soluble inhibitor aid.

Claim (Index 1):
A method for inhibiting acid corrosion in matrix acidizing and acid fracturing applications in oil and gas wells, the method comprising the steps of:\n preparing a dual-phase acid-based fracturing composition comprising:\n a strong acid operable to be diluted with treatment water and to dissolve formation rock; \n a liquid hydrocarbon comprising 5 or more carbon atoms; \n an emulsifier selected from the group consisting of an amine-based surfactant, linear alkyl amines and alkyl ammoniums; \n a hydrocarbon-soluble corrosion inhibitor present in a hydrocarbon phase of the composition, the hydrocarbon-soluble corrosion inhibitor comprising an alcohol; and \n an acid-soluble corrosion inhibitor present in an acid phase of the composition; and \n injecting the composition into an oil and gas well to cause fracturing, etching, or a combination thereof in the formation rock; wherein the corrosion inhibitor present in the hydrocarbon phase of the dual-phase fracturing composition will be spent during the injection of stimulation fluids and the corrosion inhibitor present in the acid phase will be spent during the flowback.

Metadata:
- Claim Count in Document: 4.0
- Percentile: 86.0
- Lexical Diversity: 1.59375
- Patent Class: 507.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14830419', '13682405', '13887462', '15502761', '15381670']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7082159852569976
- 35 USC 102 Novelty (BERT): 0.5425594328686827
- Combined Prediction Score: 0.6916503300181661
- Mean Citation Score: 286.252512
- Max Citation Score: 383.47
- Similarity Product: 365.399623183012

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

Dataset: test