4D Correlation of Reservoir Simulation and Seismic Attributes

| |

4D seismic difference shown at a single time step along with a reservoir simulation grid. Comparison of the seismic response from the fluid injection can be done on multiple timesteps.

4D seismic difference shown at a single time step along with a reservoir simulation grid. Comparison of the seismic response from the fluid injection can be done on multiple timesteps.  Data used with permission of owner.

The oil and gas industry has been utilizing seismic attributes for improving reservoir simulation models and predicting behavior for a long time. However, despite the immense use of data and technological advancement, the challenges with developing a correlation between the reservoir simulation and seismic attributes remain intact. This is mostly due to the dynamic nature of reservoirs. The varying conditions within a reservoir can be difficult to quantify and predict throughout the life of the field.

Importing opens in a new window4D seismic data into a comprehensive viewing environment can enhance the interpretation and accuracy of reservoir simulations. The data allows interpreters use of temporal and spatial attributes to analyze the changes in a reservoir over time. The ability to visualize these changes further elevates analysis. Software with effective interpretation and visualization abilities illustrates the interrelationships between multiple parameters for enhanced attributes analysis.

Enhancing Accuracy with 4D Seismic Data

4D seismic data provides the potential for accurately interpreting geological, lithological, and petrophysical variations in a reservoir through the analysis of multiple attributes. These attributes may not be independent of each other and their analysis can directly affect modelled reservoir dynamics. The complexity and variation of attributes within a reservoir make it difficult to characterize and predict fluid changes.

The integration of opens in a new windowseismic attributes into a reservoir simulation can be ideal in analyzing uncertainty. The analysis is utilized for effective field development. Establishing a correlation of reservoir simulation and seismic attributes allows the interpreters to accurately detail changes in reservoir fluids. It is possible to capture information including:

  • Saturation and pressure changes
  • Tracking changes in fluid contacts
  • Location of changes in hydrocarbon distribution
  • Changes in transmissibility of faults and fractures

The ability to integrate and visualize seismic attributes with a reservoir simulation can help verify the data and significantly increases the reliability of the simulation while opens in a new windowreducing the risks in decision-making regarding asset development.

Enhanced Analysis of Reservoir Simulation Attributes

Qualitative and quantitative analysis and visualization tools enable on-the-fly integration of reservoir simulation and seismic attributes to identify changes in the reservoir. Software such as CoViz 4D easily imports the seismic data as a 3D grid, representing an array of amplitude values. Each cell in the reservoir simulation grid has multiple attributes assigned to it. Adding seismic amplitude to the grid can help to successfully establish the interrelationship and analyze variation in the attributes.

Software modules such as Sim2Seis for CoViz 4D utilize the ability to calculate seismic from, in part, reservoir simulation attributes. The seismic attributes can be cross-plotted with various reservoir simulation variables. The ability to run through multiple conditional simulations can help in a fast and easy analysis of the uncertainty and variations in the simulation process. It is possible to identify whether or not the flow predicted in the reservoir can be seen with the seismic analysis. The analysis of seismic volume can verify whether or not there is enough of a change.

CoViz 4D: Analyzing Seismic Attributes for Enhancing Reservoir Simulation

CoViz 4D provides an ideal platform for reservoir engineers, geologists, and geophysicists to visualize attributes at their correct geospatial location to analyze a reservoir’s current performance and predict future behavior. The Sim2Seis module for CoViz 4D facilitates synthetic seismic volume creation. The time-step analysis and interpretation of seismic attributes with other production data help identify patterns and variations over time. The comparison of 4D synthetic volume with observed 4D seismic attributes helps in developing a reservoir model that better matches the observation. Asset teams can rely on the predictions of the reservoir model for predicting reservoir performance, saving time and costs incurred during the process.

CoViz 4D from Dynamic Graphics, Inc., gives oil and gas professionals the ability to easily access and combine all relevant data to define the correlation between reservoir simulation and seismic attributes. Powerful Sim2Seis modules provide capabilities that enable you to tie attributes through simulation to accurately evaluate reservoir characteristics and make predictions, allowing your team to confidently make decisions that positively impact profit and reduce operational risk. To learn more about CoViz 4D contact our team.

FURTHER READING

Oil and Gas Project Life Cycle: Why Software Agility Matters in Optimizing Field Analysis

In any oil and gas project life cycle significant amounts of data are collected throughout all phases—exploration, drilling, early development, infilling, maturity, and decommissioning. These data are vital to understanding and interpreting field characteristics and...

Well Spacing Optimization for Oil Well Design Completion

Optimal spacing of horizontal wells in producing zones is key in maximizing production. Data used by permission of owner.Well spacing is one of the most critical factors affecting onshore well production. Reservoir teams striving to optimize well spacing can utilize...

The Advantages of Visualizing Subsurface Data Types for Prospect Analysis

Geoscientists know more than anyone the importance of analyzing seismic data during reservoir exploration. However, seismic datastreams are one component of a larger picture rendering accurate reservoir conditions. This is why the visualization of all subsurface data...

Identifying High Water Cut Through Comprehensive Visualization

Easily compare oil-gas-water ratios among several wells. Data used with permission of owner.The water/oil ratio (WOR) is one of the more important metrics in calculating the economic value of a producing well. Reservoir engineers calculate water cut to update reserve...

Elevating Frac Hit Mitigation Strategies with Data Visualization and Analysis

Well-to-well communication—often found as frac hits during hydraulic fracturing—is common in unconventional oil and gas development. When the fracture network of a newly drilled well connects to an older well’s fracture network, the older well may fill with sand and...

Exploring the Advantages of Logging While Drilling

Visualizing LWD data such as max torque, weight on bit, gamma ray and rate of penetration, along with a cross section of the planned wellpath through the geologic model with a seismic backdrop in a geolocated context can significantly improve success in drilling.In...

Seismic Reservoir Monitoring Through Visualization

An ideal design, development, and management plan for hydrocarbon asset development comes from having a better understanding of  all known geological and petrophysical aspects of the subsurface. But given the dynamic nature of the reservoir and its attributes, petroleum professionals can encounter some complexities in the process of in-depth analysis.

Accessibility Tools
hide

Share on Social Media