PATENT CLAIM ANALYSIS

Application Number: 16056596
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-11
Patent Classification: ["702", "011000"]

Abstract:
Methods and systems for determining permeability, as a function of pore pressure, and porosity of a subsurface formation. The method includes positioning a sample in a sample assembly comprising of a gas and a pressure gauge, inside a pressure vessel comprising gas or liquid and a pressure gauge, measuring a first gas pressure, p i , of the sample inside the pressure vessel, applying a second gas pressure, p o , to the pressure vessel, the second gas pressure being greater than the first gas pressure, measuring a third gas pressure, p, at time, t, at location, x, from the inlet of sample inside the pressure vessel, determining a total gas mass per unit volume of the subsurface formation, m, and determining the permeability, k, of the subsurface formation as a function of pore pressure based at least in part on the first gas pressure, the second pressure, the third gas pressure, and the gas density, with a single test run.

Claim (Index 9):
A transient flow method for determining gas permeability of the subsurface formation using the apparatus of  claim 1 , the method comprising:\n acquiring a sample of the subsurface formation; positioning the sample in the pressure vessel comprising a fluid and the at least one pressure gauge; measuring a first pore gas pressure, p i , of a gas at a location, x, along the sample; applying a predetermined second pore gas pressure, p o , to an inlet of the sample, the second pore gas pressure being greater than the first pore gas pressure; measuring a third pore gas pressure, p, as a function of time, t, at location, x, along the sample in the pressure vessel; in a computer, determining a gas density or total gas mass per unit volume of the subsurface formation, m; and in the computer, determining the gas permeability of the subsurface formation, k(p), based at least in part on the first pore gas pressure, the second pore gas pressure, the third pore gas pressure as a function of time, and the gas density.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 96.0
- Lexical Diversity: 2.79104
- Patent Class: 702.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15378305', '15151779', '15673996', '13053875', '12861485']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2096872883055833
- 35 USC 102 Novelty (BERT): 0.5801107917972439
- Combined Prediction Score: 0.2467296386547494
- Mean Citation Score: 273.81863
- Max Citation Score: 479.63556
- Similarity Product: 456.82067337967874

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

Dataset: test