PATENT CLAIM ANALYSIS

Application Number: 15965103
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-09
Patent Classification: ["703", "010000"]

Abstract:
A process for the verification and validation testing of equipment and components for drilling, completion, production and general well construction (typically such as subsurface safety valves, wellhead trees, blowout preventers and wireline pressure control equipment) to determine the suitability of such equipment for use in oil and gas wells in high pressure high temperature environments. In particular, the process of the present invention comprises, among other steps, the steps of analyzing such components using an elastic-plastic finite element model with respect to certain preset load conditions and establishing stable model convergence, conducting a ratcheting assessment by running analysis on such model on all components that exhibit local plasticity, and examining all components to determine fatigue sensitive locations and subjecting such components to a fatigue analysis. The process may further comprise a process for qualifying the materials to be used in the manufacture of the equipment components with respect to their ability to withstand high pressure and high temperature environmental conditions.

Claim (Index 28):
A computer system for the design verification and validation of surface and sub-surface oil and gas equipment components including a processor, memory, input/output devices, and software, the software including instructions for execution of the computer system, the instructions comprising:\n (a) analyzing the components for global static strength and local plasticity with an elastic-plastic finite element model, the analysis using preset load conditions and the least favorable combination of dimensional tolerances for each component based on an initial mesh density and comprising the steps of:\n (i) confirming that the design of the component results in a stable model convergence using all preset load conditions; \n (ii) conducting a mesh refinement study on stressed portions of the components, where further refinement in mesh density will result in less than a pre-selected mesh refinement percentage change in plastic strain; \n (iii) confirming that stressed portions of the components identified by the model have strain limit damage that is less than a set strain limit damage amount; \n (b) conducting a ratcheting assessment by running an elastic-perfectly plastic analysis with the model on all equipment components that exhibit local plasticity at a maximum combination of preset load conditions to determine resistance to ratcheting by applying the maximum preset load conditions to such components to demonstrate at least one ratcheting criterion; and (c) examining all components to determine fatigue sensitive locations and subjecting components exhibiting fatigue sensitive locations to a fatigue analysis.

Metadata:
- Claim Count in Document: 119.0
- Percentile: 91.0
- Lexical Diversity: 1.74
- Patent Class: 703.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13223485', '12930423', '13171502', '12835281', '14134530']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.1866671762795247
- 35 USC 102 Novelty (BERT): 0.5670063142585526
- Combined Prediction Score: 0.2247010900774275
- Mean Citation Score: 180.190734
- Max Citation Score: 420.8565
- Similarity Product: 404.28895979762086

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