PATENT CLAIM ANALYSIS

Application Number: 16226464
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-04
Patent Classification: ["166", "308200"]

Abstract:
This disclosure describes formulations and methods for remediating subterranean-formed metal-polymer complexes in wells in subterranean formations. In one embodiment, the method includes injecting a metal-polymer complex remediation mixture containing a metal complexing agent into a subterranean formation adjacent to a well at a pressure below the fracture pressure of the formation. A sufficient contact time is allowed and then the metal-polymer complex remediation mixture is pumped from the subsurface. This has been shown to remediate polymer-containing, subterranean-formed metal-polymer complexes in shale formations. Without being held to a particular theory it appears that the metal complexing agent is forming metal complexes with the metals in the complexes, and particularly divalent metal ions. This removal of naturally occurring metals may be un-crosslinking and causing the metal-polymer complexes to go into solution, thereby removing the blockages caused by the metal-polymer complexes.

Claim (Index 22):
The method of  claim 21 , wherein the metal complexing agent is citric acid, formic acid, or mixtures thereof.

Metadata:
- Claim Count in Document: 65.0
- Percentile: 98.0
- Lexical Diversity: 1.72093
- Patent Class: 166.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['14525038', '15875265', '14686237', '14373717', '13354461']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8191923960107365
- 35 USC 102 Novelty (BERT): 0.5625914887946549
- Combined Prediction Score: 0.7935323052891283
- Mean Citation Score: 333.97827000000007
- Max Citation Score: 481.20502
- Similarity Product: 370.56296305618287

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