PATENT CLAIM ANALYSIS

Application Number: 15890540
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["166", "270100"]

Abstract:
A method for recovering crude oil from a reservoir that is penetrated by at least one injection well includes injecting an aqueous displacement fluid into the reservoir from the injection well. The displacement fluid includes a solution of a zinc salt in an aqueous base fluid. The aqueous base fluid has a total dissolved solids (TDS) concentration in the range of 200 to 250,000 ppmv (parts per million based on the volume of the aqueous base fluid) and a viscosity in the range of 1.00 to 2.00 centipoise (cP) at standard temperature and pressure. The aqueous displacement fluid has a dissolved zinc concentration in the range of 10 to 3,750 ppmv. The aqueous displacement fluid includes dissolved chloride. The molar ratio of dissolved chloride to dissolved zinc in the aqueous displacement fluid is at least 5:1.

Claim (Index 12):
The method as claimed in  claim 1 , wherein the aqueous displacement fluid is a viscosified aqueous displacement fluid, and wherein the viscosified aqueous displacement fluid is formed by dosing a viscosifying agent and a zinc salt into the aqueous base fluid, wherein the viscosified aqueous displacement fluid has a viscosity at reservoir conditions in the range of 1 to 40 cP.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 88.0
- Lexical Diversity: 2.17647
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14905084', '14377073', '13322695', '12310788', '14790090']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8192883235880525
- 35 USC 102 Novelty (BERT): 0.595040174440367
- Combined Prediction Score: 0.7968635086732839
- Mean Citation Score: 336.6746520000001
- Max Citation Score: 534.0607
- Similarity Product: 495.7137445734501

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