PATENT CLAIM ANALYSIS

Application Number: 16220983
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
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 16):
An apparatus designed for use in oil and gas wells in a high pressure high temperature environment, including for drilling, completion and production operations, the apparatus including components analyzed using a computer system including a processor, memory, input/output devices, and software, the software including instructions for execution of the computer system, having the characteristics comprising:\n (a) when analyzed using the computer system for global static strength and local plasticity using an elastic-plastic finite element model with respect to certain preset load conditions and using the least favorable combination of dimensional tolerances for each component and based on an initial mesh density, the components:\n (i) achieve a stable model convergence using all preset load conditions; \n (ii) exhibit a mesh density where further refinement in mesh density of stressed portions of the components will result in less than a pre-selected mesh refinement percentage change in plastic strain; \n (iii) achieve a strain limit damage for the stressed portions of the components identified by the model that is less than a set strain limit damage amount; \n (b) when subjected to a ratcheting assessment by elastic-perfectly plastic analysis using the computer system, components that exhibit local plasticity at the maximum combination of preset load conditions are resistant to ratcheting using the preset load conditions by demonstrating at least one ratcheting criterion; and (c) achieve acceptance criteria when the fatigue sensitive locations of the components are subjected to a fatigue analysis using the computer system.

Metadata:
- Claim Count in Document: 119.0
- Percentile: 98.0
- 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): 0.2300977280239608
- 35 USC 102 Novelty (BERT): 0.5630653092329314
- Combined Prediction Score: 0.2633944861448579
- Mean Citation Score: 180.190734
- Max Citation Score: 420.8565
- Similarity Product: 411.0656731376052

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