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The Integrated Reservoir Solutions division of Core Laboratories is offering to interested companies participation in a project designed to optimize operators’ exploitation of the liquids-rich, Codell Sandstone in the DJ Basin. This project is a follow-up to our highly successful Niobrara joint industry study.
In exploring for and developing the Niobrara oil reservoirs operators have also been taking a look at the potential of horizontal wells in the Codell. The Codell ranges from 20 to 100 feet thick in the DJ Basin and consists of three marine depositional facies. Porosity is generally less than 10% and permeability is typically less than 1md. The oil in the Codell is typically light and may be sourced from the overlying Niobrara. An integrated study of the Codell is warranted and should be directed at geology, formation evaluation and stimulation-production techniques to maximize exploitation. Some of the issues to be addressed in this project include the following:
These questions can only be solved from the geological, petrophysical and completion/stimulation analysis and evaluation of wells with conventional cores. The resultant data can be used to calibrate open-hole logs in order to better predict rock types and petrophysical properties essential for formation evaluation and proper well completion and stimulation designs. The rock types and their measured petrophysical properties can also serve as analogs when evaluating new reservoirs in wildcats or field step outs.
Each participating company will be required to contribute conventional core from two (2) wells for analysis and inclusion into the study. All participating companies will share in the project results and interpretations.
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