{"artifact_id":"L1-458","layer":"L1","title":"Black-Oil Reservoir Simulation","domain":"Petroleum Engineering","sub_domain":"Reservoir simulation","physics_fingerprint":{"L_DAG":3.5,"title":"Black-Oil Reservoir Simulation","domain":"Petroleum Engineering","carrier":"acoustic","primitives":["D.space","S.fdm.implicit_pressure","O.material_balance.residual"],"sub_domain":"Reservoir simulation","noise_model":"measurement_gaussian","problem_class":"parameter_estimation","solution_space":"3D_pressure_saturation_field","difficulty_delta":5,"integration_axis":"3d_pore_volume","sensing_mechanism":"multiphase_flow_darcy"},"observable_profile":{"metric":"production_history_match_NRMS","regime":"Existence of the recovered 3D_pressure_saturation_field is guaranteed within the declared Omega bounds. Uniqueness holds on the measurement-supported subspace; out-of-support modes are controlled by declared priors. Stability is conditionally stable (kappa_eff ~= 1000); permeability_heterogeneity_uncertainty dominates the stability cliff; the remaining mismatch parameters contribute higher-order bias terms. Measurement gaussian sets the irreducible data-fidelity floor.","secondary":"pressure_match_psi_RMSE"},"size_tiers":{"center_spec":{"omega":{"N_cells":10000,"porosity_phi":0.2,"production_years":20,"permeability_K_mD":100},"input_format":"measurement_only","problem_class":"parameter_estimation","forward_operator":"multiphase_flow_darcy","epsilon_fn_center":"0.10 production_history_match_NRMS"},"omega_bounds":{"N_cells":[100,1000000],"porosity_phi":[0.05,0.4],"production_years":[1,50],"permeability_K_mD":[0.1,10000]},"epsilon_bounds":{"production_history_match_NRMS":[0.01,0.5]},"allowed_problem_classes":["parameter_estimation"],"allowed_omega_dimensions":["N_cells","permeability_K_mD","porosity_phi","production_years"],"allowed_forward_operators":["multiphase_flow_darcy"]},"hardness_fn":{"type":"epsilon_fn","delta":5,"kappa":100000.0,"metric":"production_history_match_NRMS"},"initiator_dataset":[{"name":"primary","weight":1.0,"ipfs_cid":null,"license_hash":null}],"status":"testnet","staked_pwm":0.0,"chain_hash":"0xd09c20c829d75fc011961beac2f7e08f566f6ba912a1f94cd4f4bcf0b0d16a9a","chain_tx_hash":"0x912bf29f1731e65687d670dec58f96e7981d09935d5eb588e1161183c4ff4ed5","chain_block":41555279}