Early Identification of Reservoir Compartmentalization by Combining a Range of Conventional and Novel Data Types
| Autor: | N.A. Hale, P. C. Smalley |
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| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | SPE Formation Evaluation. 11:163-169 |
| ISSN: | 2469-8512 0885-923X |
| DOI: | 10.2118/30533-pa |
| Popis: | Summary Reservoir compartmentalization (vertical and lateral) is often a major uncertainty at the field appraisal stage, impacting important investment decisions. Unfortunately, the most definitive compartmentalization data (dynamic production data) are not usually available so early in field life. This paper illustrates how early indications of compartmentalization can be achieved by integrating various types of conventional and novel data. Using an example from the Ross oilfield, U.K. Continental Shelf (UKCS), we demonstrate how integration of oil compositional data (molecular maturity parameters, gas chroma-tography [GC] fingerprinting, pressure-volume-temperature [PVT] data) with pressure, well test, and fault seal analysis revealed the presence of several sealing faults, and thus enabled the field to be described in terms of its likely segmentation. Vertical compartmental-ization was investigated using a combination of oil geochemistry (maturity, GC fingerprinting), water composition (residual salt analysis), and high-resolution stratigraphy, revealing a continuous shale that has a lateral extent of > 5 km; it divides the reservoir into two main layers. The results of this study helped to decrease uncertainty in field development planning. The key message is that there are many tools available to aid in assessing compartmentalization, but individually they each only give part of the picture. It is therefore important to use several tools in combination. |
| Databáze: | OpenAIRE |
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