1. © Copyright 2006 POSC Fluid Properties John Bobbitt Mar 23, 2006

2. © Copyright 2006 POSC Background ExxonMobil implemented an XML schema solution for uniformly transferring fluid property lab reports. In 2004, ExxonMobil asked POSC to evolve their work into industry standards. Last autumn, we adapted the XML material within the WITSML architecture

3. © Copyright 2006 POSC Generalized Lab Test Model Sample Context: Who, what, when, where Sampling info and conditions Tests Header Test metadata, equipment, parameter settings, lab procedure Result Tables Sample Results Derived sample properties, interpretations. Raw Data Documents

4. © Copyright 2006 POSC Apply to Fluid Sample Fluid Sample Saturation Test Constant Composition Expansion Test Constant Volume Depletion Test Differential Liberation Test J Curve Test Transport Properties Test Separator Test

5. © Copyright 2006 POSC

6. Each Test A Test Test Steps

7. © Copyright 2006 POSC

8. Generalized Lab Test Model Sample Tests Header Result Tables Fluid Properties Raw Data Documents Fluid Sample The 7 Tests The Test Steps

9. © Copyright 2006 POSC Applying Generalized Lab Test Model to Fluid Properties Several tests are modelled. Determine PVT properties, phase curves, sample constituents/ composition. General sampling context (wellhead, separator tank, completion, etc)

10. © Copyright 2006 POSC Next Step: Form Work Group Initial version of schema has been developed –Follows the general lab test pattern –Need subject expert input to ensure that everything is placed correctly Refine concepts about the tests –Need input for definitions and test understanding Sample implementations –Positive indications from ExxonMobil to participate and to encourage others to do so Can lead to review and publication as add-on to WITSML Production Standards