摘要:
A process for constructing a three-dimensional geologic model of a subsurface earth volume wherein resolution scales of multiple diverse data types, including seismic data, are accounted for by generating multiple frequency passband models and combining them together to form the complete geologic model. Preferably, a model is generated for each of a low-frequency passband, a mid-frequency passband, and a high-frequency passband. When integrating seismic data into the modeling process, the seismic-frequency passband constitutes the mid-frequency passband model. The process further contemplates updating tentative frequency-passband models through optimization of assigned rock property values in each tentative model according to specified geological criteria. Such optimization is carried out by perturbation of the rock property values in a manner wherein the frequency content of each model is maintained.
摘要:
A process for constructing a three-dimensional geologic model of a subsurface earth volume in which the positions of geologic interfaces within the model are adjusted as the model is being constructed. The resulting geologic model should be consistent with all available geologic and geophysical information regarding the subsurface earth volume, including information regarding the spatial attributes of geologic interfaces within said subsurface earth volume.
摘要:
A secondary containment pipe system disposed around a primary pipe system and comprising a joint that is divided along a central parting plane and has laterally projecting flanges that form internal passages for adhesive sealing cement, that is injected through ports while the joint is clamped together around secondary containment pipes. The joint has pipe sockets that have internal grooves that also are filled with injected cement, thus forming a continuous, uninterrupted seal around the interior of the joint, and also has spillover grooves and wells for minimizing leakage, and lateral aligning surfaces. The clamping means are C-shaped clips that can be left in place indefinitely. The secondary containment pipes also are divided, being formed by elongated pipe elements fitted together around the primary pipes and having snap-latching coupling means along their abutting edges. One embodiment has internal reinforcing flaps that extend across the abutting edges and define internal sealing passages along the coupling means to be filled with injected adhesive cement through external ports, and also has means along the free edges for holding the flaps in place. A second pipe embodiment has tongue-and-groove couplings along thickened edges, and internal passages along the couplings in the form of enlarged coupling grooves, and an external reinforcing strip is provided for optional use in pressurized systems.