2015-06-24 · In a manner similar to that described in the previous P c /S w section, height/saturation curves are often fitted to these resistivity-log-derived S w data to enable reservoir hydrocarbons-in-place volumes to be calculated. The function forms are similar to or are the same as those described above for P c /S w.

Data Interpretation Thomeer Curve Fitting: Rock Typing • Thomeer model is extensively used to fit the Pc curves (hyperbolic function) for saturation height modelling and rock typing • Fitted curves are defined by the pore structure factor (G), threshold pressure (Pd) and the total interconnected pore volume (Sb∞) (Bulk Volume saturation

However, neither method has been satisfactorily upscaled until Summary: Saturation height function using the Thomeer model The saturation-height function using Flow Zone Index (FZI): •Breakthrough pressure, Pb = 6.4468*(FZI-0.7918) •Thomeer Shape factor, C = 0.3174*(FZI-0.1586) •Capillary Pressure from height above FWL (m) Pc = (Height above FWL x 62.42762 (ρ w –ρ g ) x 3.28084)/144 DOI: 10.2118/105139-MS Corpus ID: 140667487. Fully Upscaled Saturation-Height Functions for Reservoir Modeling based on Thomeer's Method for Analyzing Capillary Pressure Measurements 2016-01-19 · in which S Hg is the saturation of mercury. The Thomeer function has three parameters: Threshold pressure P ct; Pore geometric factor G; Mercury saturation at infinite capillary pressure S Hg∞ (Thomeer wrote Eq. 3 with bulk mercury saturation instead of mercury saturation. Bulk mercury saturation equals the product of porosity and mercury saturation. The saturation height functions can describe the drainage process during the hydrocarbon migration and are expressed as a relationship among the saturation, the height above the free water level and some model properties (commonly porosity and permeability).

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This relationship can be determined experimentally. The S oi /S or relationship model includes Land’s type, Suzanne type (plateau type), and Linear correlation type.

Saturation Height Function - Read online for free. Techlog Saturation Height Function Workflow

Saturation modeling features. Takes into account irreducible saturations and transition zones; Multiple methods, including: Height functions; Leverett J-functions; Thomeer and capillary functions; User-defined equations; Modeling zones defined using: Lithology and rock-type classes; Reservoir compartments ; Multiple compartments and contact Saturation height methods such as Leverett J Function, Brooks Corey, Thomeer and Lamda were investigated for the gas wells under study, which had complete data sets including conventional core, SCAL and a comprehensive suite of electric logs.

Saturation-height functions in oil and gas reservoirs are determined using methods that include quantifying the microporosity of the subterranean formation; determining the distribution of facies and microporosity as a function of depth; and calculating the saturation-height function for a given formation.

Quality Control of Functions - Checking for “Good Behaviour” HAFWL = Height above FWL (m) Rhow / Rhohc = Water and Hydrocarbon density (SG) 1.2406 = Conversion (psi/m) Method: Calculate J value for each known saturation cell (logs etc) Plot J vs known Sw (altogether &/or by facie) If reasonable relationship(s) evident, use J vs Sw as proxy for your Saturation height function The Saturation-Height Modeling module provides core-to-log integration via the following workflow: Template loading of special core data. Graphical review and edit for QC. Transform or normalize pressure data. The results of this study show that the most commonly used Leverett-J model is one of the poorer performing saturation-height functions. Of the conventional "equation based" approaches, the Thomeer and Skjaeveland models appear to have the most utility and are recommended as first choice saturation-height models to test. The two best known methods to analyze MICP measurements and to estimate saturation height curves are Thomeer-and Leverett J functions. However, neither method has been satisfactorily upscaled until now. The popular J-function method usual starts with a classification of pore systems using the parameter.

Fully Upscaled Saturation-Height Functions for Reservoir Modeling based on Thomeer's Method for Analyzing Capillary Pressure Measurements Buiting, Jan Jack ( Saudi Aramco ) March, 2007 – OnePetro Saturation-height functions in oil and gas reservoirs are determined using methods that include quantifying the microporosity of the subterranean formation; determining the distribution of facies and microporosity as a function of depth; and calculating the saturation-height function for a given formation. Saturation-height functions in oil and gas Data Interpretation Thomeer Curve Fitting: Rock Typing • Thomeer model is extensively used to fit the Pc curves (hyperbolic function) for saturation height modelling and rock typing • Fitted curves are defined by the pore structure factor (G), threshold pressure (Pd) and the total interconnected pore volume (Sb∞) (Bulk Volume saturation at infinite pressure ~ Porosity) • LR-Senergy •Leverett-J Functions •FOIL Functions •…To name a few… 0 20 40 60 80 100 120 140 160 0.00 0.20 0.40 0.60 0.80 1.00 L Saturation - v/v “A method of estimating Saturation based on the height above the free-water-level and capillary pressure” After applying this correction, saturation height models are developed from core capillary pressure (Pc) data to calculate water saturation vs. depth, which is independent of logs.
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Day 4 will cover show how to convert lab measured capillary pressure data to reservoir conditions to determine height above free water, seal capacity and initial water saturation. The use of the Thomeer method for the Arab D Reservoir at Ghawar is focused on three issues: (1) facies-dependent saturation-height modeling; (2) free-water level determination; and (3) facies-dependent recovery estimation.

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Buiting J (2007) Fully upscaled saturation-height functions for reservoir modeling based on Thomeer’s method for analyzing capillary pressure measurements. In: Paper SPE 105139 presented at the 15th SPE Middle East oil & gas show and conference held in Bahrain International Exhibition Centre, Kingdom of Bahrain

The Thomeer type curves with gradually increasing pore geometric or G-factors from left to right.