Visualizing and analyzing microseismic data during fracture stages can help to improve the fracturing process and improve expected hydrocarbon recovery.
Achieving more optimum, cost-effective recovery from unconventional reservoirs—particularly at a time when independents are cautious about these investments—begins with an in-depth analysis of subsurface conditions. These conditions, which are critical inputs for frac design and production planning, are characterized by such data as:
- formation lithology, porosity, permeability, modulus, compressibility data from core samples and drilling logs; and
- wellbore completion, reservoir pressure, and in-situ stress from well logs and tests.
Integrate and Visualize Subsurface Datasets
- Verify the extent of rock to be affected in the proposed well plan.
- Assess any geologic risks and proposing appropriate mitigation strategies.
- Conduct multiple sensitivity runs using reservoir and propagation models to account for uncertainties such as estimates of formation permeability and drainage area at the early development stage.
- Determine fracture length and conductivity based on reservoir simulation models.
- Analyze the effect of fracture length and conductivity on reservoir productivity and ultimate recovery.
- Specify more informed fracture treatments based on rock strata, in-situ stress profile, formation permeability and modulus, fracture-fluid viscosity, fluid-loss characteristics, and injection rates.
- Develop hydraulic fracture propagation models that guide the selection of appropriate proppant to achieve optimum fracture length and fracture conductivity.
- Using data obtained via borehole microseismic temperature, tiltmeter mapping or tracer surveys, assess the post-fracture stimulation to determine the extent of hydraulic fractures and the stimulated reservoir volume.
Integrated data visualization and analysis capabilities allow engineers to understand reservoir characteristics and evaluate reservoir potential.
- Use microseismic data to determine the extent of individual fracks within the target reservoir, their positions relative to the wellbore, and their effect on well production.
- Present hydraulic fracturing data in conjunction with acoustic data, fault geometries, stratigraphy, and statistical plots of quantitative datasets to assess reservoir performance and plan enhancements.
- Update sensitivity runs with new/updated data to reduce uncertainties and determine their effect on created and propped fracture dimensions.
- Plan the optimum wellpath and spacing for additional wellbores to maximize hydrocarbon recovery between adjacent wells.