The Tulsa Chapter of the SPWLA holds our meetings on the following
Wednesdays of each month from September 2001 through May 2002.
Reservations: Please call (918) 252-5416 Ext 119 (Susan Davis) or fax (918) 252 4496
by noon on Tuesday the day before the talk.
Include name, company affiliation and total number in party
Cost:$20.00 per person $15.00 for students, pay at door
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What: |
Luncheon and Technical Presentation
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When: |
Wednesday, October 4, 2006 at 11:30am
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Where: |
Petroleum Club, 601 South Boulder, Tulsa 16th Floor Library
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Reservations: |
Please e-mail or call Mary Stafford at (918-252-5416) ext 101 or (mstafford@tuckerenergy.com) by noon Tuesday, October 3rd. Include name and total number in party. |
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Cost: |
$20.00 per person $15.00 for students, pay at door.
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Speaker: |
James D Klein
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Subject: |
Formation Evaluation and Permeability Prediction in a Highly Heterogeneous Reservoir – The Kuparuk C-Sand
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The Kuparuk River Field on the North Slope of Alaska is one of the largest oil accumulations in North America. Approximately one-third of the OOIP is contained in the C-sands, which are shallow marine sandstones characterized by intense bioturbation and complex diagenesis. Siderite content is extremely variable, leading to large variations in permeability, porosity, and capillarity on the sub-foot scale.
Interpretation of wireline logs in the C-sands for mineralogy, porosity, and water saturation is relatively straightforward, provided the siderite and glauconite content and core heterogeneity are taken into consideration. Developing a realistic permeability log is more difficult due to extreme scatter in porosity-permeability cross plots. Deterministic porosity-permeability transforms, where permeability is predicted from log porosity, are poor predictors, since the results do not replicate the extreme scatter present in the core data. Recent efforts at field description have required re-evaluation of the permeability model, with a need for predicted properties that could be scaled up in a straightforward fashion for use populating a geocellular model.
A new method has been developed for the prediction of permeability. This method is based on random selection of values of core bulk density from sub-groups based on log RHOB and petrofacies. For each half-foot log depth, selection of core bulk density points is repeated until the density averaged over a sliding window matches the RHOB log to within a pre-set tolerance, normally 0.05 g/cc. The values of core porosity and permeability that correspond to the selected value of core bulk density are then selected as the final result at each depth point. The method duplicates the statistical distributions of the core porosity and permeability values, with values obtained every half-foot. We upscaled from 0.5 ft sample increment to 1 and 2 ft increments. The upscaled permeability values match kH based on core-plug data, on a well-by-well basis. The values are also consistent with kH determined from maximum flow rates observed in a large number of wells. Given the match with other measures of permeability, the upscaled permeability values were deemed satisfactory for use in the geo-cellular model.
Officers for 2006-2007
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President
Phil Schenewerk Newfield Exploration 110 West Seventh St Tulsa, OK 74119 918-582-2690 pschenewerk at newfield.com |
Vice President Technology
Philip Van De Verg ConocoPhillips Room 257 GB Bartlesville Technology Center Bartlesville, OK 74003 USA 918.661.9674(tel) 918.662.2047(fax) phil.VanDeVerg at conocophillips.com |
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Vice President Membership
Kevin Brown Samson Geologist 2 W 2nd St Tulsa Ok 74103-3103 918-591-1859 (tel) 918-591-7859 (fax) kbrown at samson.com |
Secretary/Treasurer
John Broughton Tucker Technologies 12607 E 60th Tulsa, OK 74146 918-252-5416 Ext 132 918-252-4496 (fax) jbrought at tuckerenergy.com |