Initial oil in place example

Previous estimates based on 2D seismic data carried an oil recovery of about On the other hand, if the rock sample were crushed with a mortar and pestle to determine the actual volume of the solids in the core sample, then an absolute porosity measurement would result because the identity of any isolated pores would be lost in the crushing process. Retrieved January 18, Well Evaluation Conference Proceedings. International Energy Outlook

The term 1P is frequently used to denote proved reserves; 2P is the sum of proved and probable reserves; and 3P the sum of proved, probable, and possible reserves. Theoretically the method is applicable only to the single well computations; however, in practice, production extrapolations done for a group of wells often provide acceptable approximations. Understanding reserves uncertainties in a mature field by reservoir modeling. Archived from the original on The instability associated with the interpreted loop rendered the application of psuedovelocities calculated from the time grid a sub-optimal means of carrying out the depth conversion.

A few equations, however, are written assuming English or customary units. Hydrocarbon saturation Capillary pressure curves : Saturations were modeled using capillary pressure curves generated from a log derived saturation height function calibrated against nearby field cores analysis including capillary pressure measurements was carried out on the acquired core. Namespaces Article Talk. A Quality Check QC of the migration velocity grid and contacts indicated that the extracted migration velocity grid is good and useable. Thus, many of the void spaces are interconnected while some of the pore spaces are completely isolated.

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Help with editing. The volume-weighted average net-to-gross calculated for the G1. Hidden categories: CS1 maint: archived copy as title Articles needing additional references from February All articles needing additional references All articles with unsourced statements Articles with unsourced statements from November Another widely used technique for the estimation of recoverable hydrocarbons in place is a Material Balance method. This study intends to build two deterministic models on different possible interpretations of the same data set. The results from the new 3D seismic interpretation from this study confirms a larger volume of hydrocarbon in place due mainly to a larger structure Table 2. A resource number may be assigned to an undrilled prospect or an unappraised discovery.
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Multi-scenario static and dynamic modeling will be required to quantify the impact of these uncertainties not only on the static volumes, but also on the other parameters needed for a robust field development. The choice of the combined velocity model based on time depth TZ and Migration velocity as the most-likely model was based on the fact that it provided the platform for the integration of all available data. Another widely used technique for the estimation of recoverable hydrocarbons in place is a Material Balance method. What Does It Do? Subscribe to Get Free Calculation Sheet. Efeotor, J.
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The method is more reliable than Volumetric methods as long as there is sufficient data to establish the pressure-hydrocarbon production relationship. These functions were applied to the geological models to extract average HC saturations for use in the probabilistic estimate. These were used to evaluate some of the uncertainties in the volumetric parameters for use in probabilistic volumetrics. The original porosity is that developed in the deposition of the material, while induced porosity is that developed by some geological process sub- sequent to deposition of the rock. Hydrocarbon exploration or oil and gas exploration is the search by petroleum geologists and geophysicists for deposits of hydrocarbons , particularly petroleum and natural gas , in the Earth using petroleum geology.
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The field was discovered by exploration well 1 in and covers an area of approximately 24, sq. The numbers for the aforementioned factors are established by conducting a series of test drills around the reservoir. Here the main assumption is that the trend established in the past will govern the future in a uniform manner. More information. Gross Rock Volume GRV : An exhaustive discourse of the structural and sedimentological settings and evaluation is given by Efeotor and Arochukwu, Companies and organisations. From Wikipedia, the free encyclopedia.
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A prospect is a potential trap which geologists believe may contain hydrocarbons. Archived from the original on Porosity modeling relied heavily on facies-based modeling and kriging of the porosity curves at the well locations to the interwell and extra well areas. Channel and re-worked mouth bar deposits from the bulk of the G1. Material balance estimates agree with the firm block results.
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