PATENT CLAIM ANALYSIS

Application Number: 16182280
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-03
Patent Classification: ["324", "309000"]

Abstract:
Nuclear magnetic resonance (NMR) gas isotherm techniques to evaluate wettability of porous media, such as hydrocarbon reservoir rock, can include constructing a NMR gas isotherm curve for a porous media sample gas adsorption under various pressures. A hydrophobic or hydrophilic nature of the porous media sample can be determined using the NMR gas isotherm curves. A wettability of the porous media sample can be determined based on the NMR gas isotherm curve. The wettability can be determined for porous media samples with different pore sizes. In the case of reservoir rock samples, the determined wettability can be used, among other things, to model the hydrocarbon reservoir that includes such rock samples, to simulate fluid flow through such reservoirs, or to model enhanced hydrocarbon recovery from such reservoirs.

Claim (Index 17):
A system comprising:\n a nuclear magnetic resonance (NMR) sample cell configured to receive a reservoir rock sample comprising a plurality of porous regions distributed along a longitudinal axis of the reservoir rock sample, wherein the plurality of porous regions have a respective plurality of wettabilities, each wettability representing a quality of each porous region to absorb gas; a pressure delivery system connected to the NMR sample cell, the pressure delivery system configured to apply a plurality of pressures to the reservoir rock sample in the NMR sample cell; a NMR control system connected to the NMR sample cell, the NMR control system configured to, at each pressure of the plurality of pressures, apply a spin-echo single-point imaging (SE-SPI) pulse sequence to the plurality of porous regions distributed along the longitudinal axis of the reservoir rock sample; and a computer system connected to the NMR control system and the pressure delivery system, the computer system including a computer-readable storage medium storing executable instructions to cause the computer system to perform operations comprising:\n constructing a nuclear magnetic resonance (NMR) gas isotherm curve for the reservoir rock sample in response to applying the plurality of pressures and, at each pressure of the plurality of pressures, applying the SE-SPI pulse sequence to the plurality of porous regions distributed along the longitudinal axis of the reservoir rock sample; \n determining the plurality of wettabilities for the plurality of porous regions based on the NMR gas isotherm curve, each wettability of the plurality of wettabilities including a value representing the quality of each porous region to absorb gas; \n determining a spatial wettability distribution for the reservoir rock sample based on the plurality of wettabilities; and \n providing the spatial wettability distribution for the reservoir rock sample.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 98.0
- Lexical Diversity: 2.07353
- Patent Class: 324.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15069650', '15463679', '14673043', '15837404', '13513963']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.570431318627813
- 35 USC 102 Novelty (BERT): 0.6816681263986836
- Combined Prediction Score: 0.5815549994049001
- Mean Citation Score: 440.132594
- Max Citation Score: 707.79553
- Similarity Product: 678.0886240974826

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

Dataset: test