Horizontal and Directional 3D Wellbore Visualization

With the increase in drilling activities on a global scale, the complexity of managing drilling operations in oil fields is becoming increasingly complex. The knowledge on the exact geospatial location of existing horizontal and directional wellbores has thus become increasingly crucial, especially in determining the proper placement of increased density of wells and the production uncertainties. 3D wellbore visualization has allowed drilling and reservoir engineers and geologists to accurately analyze the uncertainties with the identification of existing well trajectories and examination of planned locations in a simplified and expedited manner.

A horizontal well plan with ellipsoids of uncertainty displayed along the cross-section of a geologic model with a potential collision with an offset well.

A horizontal well plan with ellipsoids of uncertainty displayed along the cross-section of a geologic model is shown with a potential collision with an offset well (in pink).  Inset is the traveling cylinder diagram of that potential collision.

Determining Uncertainties in Production

The development of assets requires precise knowledge of where the wellbore is spatially located. However, with the increase in drilling activities that minimize adjacent well distance, there is often a need for optimal well placement. Even though it may be easy to locate the well at the surface, it is a difficult task to examine and position the wellbore trajectory, especially for vertical wells. The largest uncertainty comes from the geomagnetic model (BGGM, IGRF, MVHD, etc.), followed by depth uncertainty (drill pipe stretch, wireline stretch, etc.), and finally by tool sensor data (magnetometer, accelerometer, and gyroscopic data). With all of the above, we can derive the MD, inclination, and azimuth. This presents an increased challenge for drilling engineers to analyze these issues to successfully avoid collision and reach the intended target within the reservoir.

The ease of analysis can be achieved with 3D visualization which can accurately depict the reservoir characteristics, subsurface geology, and existing infrastructure at its correct geospatial position. With the integration of seismic, structural, and volumetric data and model for 3D wellbore visualization, geologists, and drilling and reservoir engineers and planners can:

  • Determine actual well position and its trajectory in the subsurface.
  • Locate nearby wells or conflicting well paths for improved well planning.
  • Identify the impact of stratigraphy on drilling.
  • Analyze for ideal completion strategy.
  • Calculate positional uncertainty ellipsoid and identify target boundary and apply quantifiable rules and warnings.

3D Wellbore Visualization for Improved and Expedited Analysis

3D wellbore visualization along with integrated subsurface and infrastructural data and models allow asset teams to precisely analyze the subsurface anomalies that can impact locating existing wells or planning infill drillings. Visualization capabilities enable accurate identification and quantitative analysis of uncertainty related to horizontal or direction wellbore drilling due to factors including tool limitations and environmental factors inaccuracy in data reading or calculation.

CoViz 4D and WellArchitect facilitate uncertainty visualization along the well path through the integration of the earth model and well plan trajectory for error analysis. These softwares provide engineers with the ability to calculate and display ellipsoids of uncertainty in an interactive platform. These uncertainties are displayed along the well path and is an indication of spatial variation from the actual well position. These softwares also allows creating a 2D/ 3D bubble map of production data. Cumulative production mapped along the wellbores of local offset wells, allows asset teams to see the production status of the wellbore, thus, assisting them to make informed decisions about the further need for well planning and drilling.

Tools for Enhanced Well Planning and Visualization

CoViz 4D and WellArchitect from Dynamic Graphics Inc., are effective tools for integrating multiple datasets to achieve an elaborate 3D visualization output for effective well design.

The powerful capabilities of CoViz 4D can be used in quantitative data analysis for effective well path planning and design. In combination with WellArchitect, the users can easily view the wellbores in their correct geospatial location alongside the relative positional uncertainty, offsets uncertainty, and targets uncertainty to examine the acceptable range of error in well design.

The software platforms allow easy and simplified data integration and analysis for effective 3D wellbore visualization. The precise analysis and evaluation allow drilling and reservoir engineers, geologists, and management to accurately evaluate existing and planned wellbore locations to avoid a potential collision and inaccurate targeting risks.

Dynamic Graphics, Inc. offers oil and gas professionals comprehensive visualization software solutions for improved well planning and development. CoViz 4D and WellArchitect, provide powerful visualization and analytic capabilities that facilitate uncertainty recognition through 3D wellbore visualization for minimization of potential drilling risks and costs. Contact our team to learn more about DGI’s products.

FURTHER READING

A Statistical Approach to Depth Uncertainty Analysis for Model Integrity

3D Depth Uncertainty Model: Depth uncertainty imported into well paths and displayed as cones of uncertainty indicating positional uncertainty to 1 Standard Deviation.Dealing with the fundamental uncertainty of subsurface environments and their hydrocarbon resources...

Harnessing Geothermal Energy from Mature Oil Fields

The demand for environmental and economic sustainability has encouraged industries to approach new techniques of energy development. The hydrocarbon sector is increasingly looking at the mature and depleted oil fields that meet the temperature requirement for any...

Understanding the Role of Data Integration in Wellbore Trajectory Planning

Geologic complexity and a maze of existing wellbores can challenge the best well planners to navigate subsurface environments and determine the optimum wellbore trajectories for new, sidetrack, multilateral, or infill wells. Well planners share the responsibility with...

Managing Subsea Well Completions: Saving Cost and Time

Managing subsea well completions is a chief concern in a high risk, high cost offshore field. Making sure models and simulations are accurate and reliable gives more security in well completions and completion management. Visualization and integration with geologic...

Geospatial Visualization of Well Log Cross-Plot Data

Cross plot of two logs from hundreds of wells. A small correlation is shown. Outliers are easy to spot as well.A cross plot of well log data is essential in establishing the accurate correlation between the well parameters. Not only does it help in understanding the...

Data Visualization to Guide the Recompletion of Oil and Gas Wells

Covisualization and analysis of fluid migration and depletion via 4D seismic along with production/injection values and geologic structure can enable better decision making when it comes to recompletion considerations.With easily recoverable oil either gone or...

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
XHot Key: CTRL-Q

Share on Social Media