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RokDoc Seismic Data Conditioning & Simultaneous Inversion

3 Day Course
Attendees learn to operate the software by applying it to practical examples; this is supplemented by presentations of the underlying principles and by discussion of the results obtained, with emphasis on QC methods.

The emphasis is on deterministic simultaneous inversion of multiple angle stacks to give acoustic and shear impedance, but coloured inversion of AVO intercept – gradient combinations is also included.

The course is intended for new and intermediate users of RokDoc Seismic Data Conditioning and Inversion, and will cover these topics:

  • Overview of Inversion
  • Why invert data?
  • Inversion algorithms
  • Limitations and assumptions
  • Pre-inversion seismic data conditioning
  • Workflow overview including parameter testing
  • QC of inversion results
Detailed Course Overview
Well-ties and Wavelets
  • Quantitative ties: the Roy White method
  • Estimating accuracy and goodness of fit
  • Wavelet consistency across a dataset
Well-tie example
  • Backus averaging
  • Wavelets from near, mid, far, ultrafar stacks: checking consistency
Introduction to RokDoc 3D
  • Setting up seismic and well data
  • Manipulating seismic views
Seismic Data Conditioning Example
  • Spectral balancing including QC of results
  • Time alignment: trim statics
  • Amplitude balancing: how should it be done?
Simultaneous Inversion example
  • Setting up the input data
  • Creation and QC of the low-frequency background model
  • Inversion parameter testing:
  • Background model high-cut filter
  • Model weight
  • Use all the available substacks?
  • QC: fit to well and seismic data
Making Derivative Outputs example
  • Poisson’s ratio
  • Acoustic Impedance – Poisson’s Ratio projections
  • λρ - μρ
Alternative approach: Relative Elastic Impedance
  • Principles of extended elastic impedance and chi angle projections
  • Problems of gradient calculation
Chi Angle Projections example
  • Well cross-plots
  • Seismic intercept and gradient combination
Coloured Inversion
  • Principles
  • Pros and cons versus simultaneous inversion to absolute impedances
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Prior to the course, Ikon Science will be in touch regarding payment and details of all course attendees.

Course Terms and Conditions
1. Ikon Science shall provide, at its cost, comprehensive training course materials comprising PowerPoint slides, worksheets, trainer notes and case notes as required for the relevant Ikon Science training course described above (the “Course”) and in sufficient numbers for all attending participants (the “Materials”). Such Materials are to include exercises and case studies as well as a selection of relevant articles (where available) that may be of use to facilitate further understanding of the subject matter.
2. The individual attending the training course (the “Attendee”) acknowledges and agrees that all intellectual property in the Materials belongs exclusively to Ikon Science or third party providers thereof (where applicable) and the Individual shall not acquire any express of implied interest therein. The Attendee shall not (i) copy or otherwise reproduce the Materials, (ii) use the Materials for commercial purposes or otherwise than for the direct purpose of completing the Course, or (iii) sell, lease, transfer, publish or otherwise make available or disclose the Materials or any part thereof (whether orally, in writing or in electronic form) to any third party (including any other person, company or any employee, officer or agent of the Attendee.
3. Ikon Science shall provide one (1) suitably skilled and experienced trainer who shall deliver the Course in a professional manner and otherwise in accordance with the objectives, target audience and outline set out in this letter.
4. This Course booking form must be signed by: (i) an authorised signatory of the company being invoiced for the Course (“Company”); or (ii) by the Attendee if prior payment has been made on a personal basis and in advance.
5. This contract for the provision of training is governed by English law and subject to the exclusive jurisdiction of the courts of England & Wales.
6. In the event that the Company issues a purchase order to Ikon Science which relates to training for a specified number of Company personnel in the use of Ikon Science software as specified therein, Ikon Science hereby grants to Company a non-exclusive, non-transferable licence for each such personnel to use the relevant software (“Training Licence”) provided by Ikon Science in connection with the such training (“Training Licence”) solely for such training purposes and for no commercial or other purposes whatsoever. Training Licence shall be installed by Company on such equipment as Ikon Science shall specify and, unless otherwise agreed in writing, each Training Licence shall expire seven days after its date of issuance. Save as aforesaid, Ikon Science’s standard software licence terms which are not inconsistent with the terms of this paragraph shall apply to all Training Licences granted hereunder.
7. All prices quoted are net of all relevant taxes (including VAT).
8. If full payment is not made on booking, it shall be required within thirty (30) days of the invoice date.
9. The Attendee or Ikon Science may cancel or postpone the training course by written notice to the other. In the event that the Attendee cancels the course up to thirty (30) days prior to the course taking place Ikon Science will refund in full any fee paid in respect of the training course. If cancellations are requested by the Attendee between 30 and 14 days prior to the agreed training course commencement date, Ikon Science reserves the right to retain 50% of the full fee. If such cancellation by the Attendee is made less than 14 days prior to the training course commencement date, the Attendee will forfeit the fee in full.
10. If a request for postponement of the training course is received at least 14 days prior to the course taking place, the Attendee and Ikon Science shall work together in good faith to agree alternative dates for the training course. For the avoidance of doubt, if the request is received within 14 days of the training course commencement date Ikon Science is under no obligation to agree an alternative date and the Attendee will forfeit their fee in full.

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