RokDoc WellTie

Well-ties form the basis of seismic interpretation and also allow a quantitative analysis of the seismic phase, frequency and other attributes. Good well-ties are essential for quantitative seismic workflows such as inversion and reservoir characterisation. Conventional Wavelet estimation is performed using the frequency domain least squares method (White, 1980) along with QC measures on PEP maps, delay maps and the various statistics produced from this analysis to determine the well tie quality.

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Industry Challenges

Inefficient workflows to detect reservoirs in seismic data
  • Incorrect identification of seismic events and correlations to geological units
  • Missed drilling targets due to imprecise predictions
  • Industry standard software packages have inconsistent and non-intuitive workflows
Imprecise and inaccurate depth-time relationships
  • Accurate time-depth relationships are dependent on input data quality
  • Lack of detailed data QC parameters leads to limited reservoir characterisation
  • Over-reliance on qualitative ties results in inaccurate interpretation
Business decisions negatively impacted by imprecise reservoir characterisation
  • Poor well ties lead to ambiguous and delayed reservoir characterisation
  • Reservoir properties are inaccurately predicted, thus miscalculating reserves
  • Time-inefficient work flows transferring data between software platforms

RokDoc Well-Tie Advantages


Improve seismic interpretation

  • Gain better insight into seismic data for improved geological understanding
  • Consistently and systematically improve input data to obtain more optimal results


Reservoir properties confidently predicted

  • Capture uncertainty in depth-time relationships for improved reserve estimates
  • Obtain consistent and accurate results across the basin by using consistent QC methods


Efficient workflows and algorithms

  • Reduce time to generate predictive 3D subsurface models
  • On-the-fly processing and automated QC for quick optimisation of parameters
  • Minimisation of disk space, processor cycles and human effort

RokDoc Well-Tie Workflow

Well-Tie Module

RokDoc Standalone Well-Tie delivers a fast, robust, consistent method that enables statistical or deterministic wavelet estimation, synthetic to seismic correlation to enhance seismic interpretation, reservoir characterisation and well planning efforts. It allows the user to export data easily in different formats and it can also be connected to other software platforms through use of OpenSpirit connector and the Petrel interconnector, making the transfer process more efficient. Key functionality includes cross-plotting, Vp prediction, Vs prediction, Rho prediction, log editing, depth-time conversion, wavelet estimation/stretch and squeeze.
Well ties process that can be calibrated to existing lithology information
Different wavelets comparison amplitude and phase QC plots
Multi-well and zones cross-plot with calibrated RPMs