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US 2026/0298071 A1Published application
Hydraulic fracturing framework
AssigneeSchlumberger Technology Corporation
InventorsSafdar Abbas, Adrian Enrique Rodriguez Herrera, Karsten Fischer
Life of this patent
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Abstract
A method can include receiving strain data associated with propagation of a hydraulic fracture in a subsurface geologic region; performing a comparison between the strain data and simulation results generated using a mesh model of the subsurface geologic region and enrichment equations that represent one or more discontinuities in the subsurface geologic region; and, based on the comparison, characterizing the subsurface geologic region.
Claims20
A method comprising:
- disposing a distributed acoustic sensing (DAS) system in an observation well;
- generating a mesh model of a fracture network including preexisting natural fractures in a subsurface geologic region based on geological data acquired by the DAS system;
- performing a first stimulation operation from a stimulation well;
- in response to performing the first stimulation operation, recording a DAS signature via the DAS system in the observation well;
- performing a comparison between the geological data and simulation results generated using the mesh model of the subsurface geologic region, wherein the performing the comparison comprises utilizing an inversion model, the inversion model configured to:
- compute a strain rate signature at the observation well as impacted by a first feature and a second feature of the preexisting natural fractures;
- create first templates for the strain rate signature as impacted by the first feature;
- create second templates for the strain rate signature as impacted by the second feature;
- and
- combine the first templates and the second templates to describe combinations of strain rate signatures for arbitrary features of the preexisting natural fractures;
- inferring updated features of the preexisting natural fractures from the inversion model;
- characterizing the subsurface geologic region by updating the mesh model based on the inferring;
- and
- performing, based on the updating the mesh model, a second stimulation operation to cause a propagation of a hydraulic fracture that short circuits the stimulation well and a neighboring well.
11 more elements
A system comprising:
- a processor;
- a memory operatively coupled to the processor;
- processor-executable instructions stored in the memory and executable to instruct the system to:
- dispose a distributed acoustic sensing (DAS) system in an observation well;
- generate a mesh model of a fracture network including preexisting natural fractures in a subsurface geologic region based on geological data acquired by the DAS system;
- perform a first stimulation operation from a stimulation well;
- in response to performing the first stimulation operation, record a DAS signature via the DAS system in the observation well;
- perform a comparison between the geological data and simulation results generated using the mesh model of the subsurface geologic region, wherein the performing the comparison comprises utilizing an inversion model, the inversion model configured to:
- compute a strain rate signature at the observation well as impacted by a first feature and a second feature of the preexisting natural fractures;
- create first templates for the strain rate signature as impacted by the first feature;
- create second templates for the strain rate signature as impacted by the second feature;
- and
- combine the first templates and the second templates to describe combinations of strain rate signatures for arbitrary features of the preexisting natural fractures;
- infer updated features of the preexisting natural fractures from the inversion model;
- characterize the subsurface geologic region by updating the mesh model based on the inferring;
- and
- perform, based on the updating the mesh model, a second stimulation operation to cause a propagation of a hydraulic fracture that short circuits the stimulation well and a neighboring well.
14 more elements
One or more non-transitory computer-readable storage media comprising processor-executable instructions executable by a system to instruct the system to:
- dispose a distributed acoustic sensing (DAS) system in an observation well;
- generate a mesh model of a fracture network including preexisting natural fractures in a subsurface geologic region based on geological data acquired by the DAS system;
- perform a first stimulation operation from a stimulation well;
- in response to performing the first stimulation operation, record a DAS signature via the DAS system in the observation well;
- perform a comparison between the geological data and simulation results generated using the mesh model of the subsurface geologic region, wherein the performing the comparison comprises utilizing an inversion model, the inversion model configured to:
- compute a strain rate signature at the observation well as impacted by a first feature and a second feature of the preexisting natural fractures;
- create first templates for the strain rate signature as impacted by the first feature;
- create second templates for the strain rate signature as impacted by the second feature;
- and
- combine the first templates and the second templates to describe combinations of strain rate signatures for arbitrary features of the preexisting natural fractures;
- infer updated features of the preexisting natural fractures from the inversion model;
- characterize the subsurface geologic region by updating the mesh model based on the inferring;
- and
- perform, based on the updating the mesh model, a second stimulation operation to cause a propagation of a hydraulic fracture that short circuits the stimulation well and a neighboring well.
11 more elements
Dependencies are inferred from the claim text.