PATENT CLAIM ANALYSIS

Application Number: 15981998
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2019-11
Patent Classification: ["166", "295000"]

Abstract:
A method for plugging and sealing subsurface formations using alkaline nanosilica dispersion and a delayed activation chemistry is disclosed. In accordance with one embodiment of the present disclosure, the method includes introducing a mixture with a first pH into the subsurface formation. The mixture comprises an aqueous solution, an alkaline nanosilica dispersion and a water-insoluble hydrolyzable compound. The method further includes allowing the water-insoluble hydrolyzable compound to hydrolyze in the subsurface formation to form an acid at 70° C. or greater, thereby acidizing the mixture to a reduced second pH and causing the alkaline nanosilica dispersion to gel into a solid and seal the subsurface formation. A composition for sealing a subsurface formation is also disclosed. The composition includes an aqueous mixture including water, an alkaline nanosilica dispersion, and a water-insoluble hydrolyzable compound.

Claim (Index 9):
The method of  claim 1 , in which the aqueous solution comprises at least one of fresh water, salt water, brine, municipal water, formation water, produced water, well water, filtered water, distilled water, sea water, or combinations of these.

Metadata:
- Claim Count in Document: 44.0
- Percentile: 93.0
- Lexical Diversity: 2.11765
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15679884', '10574298', '15495233', '15887690', '11365615']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7921369219267668
- 35 USC 102 Novelty (BERT): 0.4600149494785852
- Combined Prediction Score: 0.7589247246819486
- Mean Citation Score: 163.68187799999995
- Max Citation Score: 168.90536
- Similarity Product: 129.26518076601505

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

Dataset: test