PATENT CLAIM ANALYSIS

Application Number: 15775384
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-01
Patent Classification: ["166", "308300"]

Abstract:
The present invention discloses a phase-change hydraulic fracturing process, including the following steps: (1) injecting clean water or conventional fracturing fluid to a formation, so that the formation fractures; (2) placing non-phase-change liquid and phase-change liquid in different liquid mixing tanks and injecting into a shaft at the same time, an injection volume ratio of the non-phase-change liquid to the phase-change liquid is (0-0.7): (0.3-1); (3) injecting a displacement fluid into the shaft, so that the non-phase-change liquid and the phase-change liquid in the shaft completely enter a reservoir; (4) performing well shut-in and pressure-out for 30-200min, so that solid-phase matters generated by the phase-change liquid are laid in the fracture; and (5) relieving pressure to finish the construction.

Claim (Index 3):
The phase-change hydraulic fracturing process according to  claim 1 , wherein the displacement fluid is a diesel, a gasoline, an ammonium chloride solution of 3% by mass, or a potassium chloride solution of 3% by mass.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 93.0
- Lexical Diversity: 1.88312
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15775009', '10253302', '13282843', '10801461', '13017856']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8050028563791247
- 35 USC 102 Novelty (BERT): 0.4877590068160442
- Combined Prediction Score: 0.7732784714228167
- Mean Citation Score: 208.783834
- Max Citation Score: 223.97305
- Similarity Product: 150.48365514684917

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