Se hela listan på wiki.aapg.org

model than that modified from Huet and Blasingame equation for estimating absolute permeability from mercury injec- tion capillary pressure data. The foundation of my new model is the petrophysical relation between absolute permeabil- ity and capillary-pressure/wetting phase saturation properties.

The Brooks–Corey model is widely used owing to its accuracy [22–25], and it is expressed as (9) Or (10) 2011-09-01 · On the basis of Thomeer method, Clerke and Martin (2004) determined water saturation distribution in transition zone using type curve matching method with the capillary pressure data. However, Thomeer method does not match well with experimental capillary pressure data of highly heterogeneous porous medium because this method still treats the effect of pore system with a single value of pore geometrical factor. Thomeer (1960) developed a method for the analysis of mercury injection capillary pressure (MICP) data, which was used primarily within Shell (Thomeer, 1983; Smith, 1992; Hawkins et al., 1993). He observed that the data from the MICP experiment, for simple rock types, could be represented by a hyperbola when plotted on Log-Log graph paper. The capillary pressure J-function is a dimensionless measure of the capillary pressure of a fluid in a porous medium.

Fully Upscaled Saturation-Height Functions for Reservoir Modeling based on Thomeer's Method for Analyzing Capillary Pressure Measurements Subsequently, Chapter 4 opens with theory related to capillary pressure and capillary pressure measurements. It also describes capillary pressure models and porosity-permeability models. In Chapter 5, the MICP parametrization workflow used in this thesis is described. Chapter 6 Hence, when it comes to building reservoir models and estimating volumes in-place, capillary pressure based saturation-height models are used to de- scribe Sw. For unconventional reservoirs, even if capillary pressures are not controlling Sw, saturation-height modelling provides a means to describe Sw variations in reservoirs using property variations. predict permeability.

In 1960, Thomeer 2 proposed a relationship between capillary pressure and mercury saturation empirically: Equation 3. where pe is the entry capillary pressure of the rock sample, SHg is the mercury saturation, SHg8 is the mercury saturation at an infinite capillary pressure, and Fg is the pore geometrical factor.

The resulting fitting parameters (displacement pressure, pore geometric factor, Bulk volume occupied at infinitive pressure) can be used to characterize the pore structure and to build a saturation model. For more information: A Thomeer forward-modeled capillary pressure curve can be generated from insight into the generating parameters that can come from a variety of sources of rock data, from cores to cuttings and the Shell Rock Catalog (Thomas et al., 1995). CENG 571, Chapter 3 Rock Properties; Pore size distribution, Thomeer model of the capillary pressure curve, Fit of capillary pressure with lognormal distribution CENG 571, Chapter 5 Multiphase Fluid Distribution; Capillarity, Nonwetting phase trapping, Hysteresis We discussed in CENG 571 how the pore size distribution may be When the capillary bundle model is used to describe a rock, the flow of one capillary tube according to the Poiseuille equation (n capillary tubes) is given as (2) where q is the flow, r is the capillary tube radius, μ is the viscosity, l 1 is the length of the capillary tube, and Δp is the pressure difference. A set of sixty four Mercury Injection Capillary Pressure curves from a Middle East tight carbonate reservoir were modelled with Thomeer hyperboles and grouped using K-medoids clustering.

Thomeer Feature. Peer reviewed (2) Source. OnePetro (5) Date. Earlier than January, 2016 (3) 2018 (1) 2019 (1) to. Go SPE Disciplines. Highlight matches.

The permeability models are: Purcell model, Thomeer model, Winalnd model, Swnson model, Pittman model, Huet-Blasingame model, Dastidar model, Injection Capillary Pressure Data,” Paper [22] W. R. Purcell, “Capillary Pressure—Their IPTC 10994 Presented at the 2005 Measurement Using Mercury and the International Technology Conference, Calculation of Permeability There Form,” Doha, 21-23 November 2005, 12 p. capillary pressure model was derived theoretically.

A set of sixty four Mercury Injection Capillary Pressure curves from a Middle East tight carbonate reservoir were modelled with Thomeer hyperboles and grouped using K-medoids clustering. 2014-09-01 Abstract. A method is presented that provides a mathematical description of capillary pressure curves and, probably, of differences in pore geometry of samples. The technique is based on the observation that the location and shape of a capillary pressure curve reflect characteristics of the pore structure of the sample. level is defined as the elevation where the capillary pressure is zero. The above equation gives the mapping between the elevation and the capillary pressure.
Melanders alvik brunch

Swanson proposed a correlation between permeability and the intersection of a 45° line with the mercury capillary pressure relationship plotted on a log-log scale. Thomeer J. H. M., Introduction of a pore geometrical factor defined by the capillary pressure curve, J Petrol Technol 1960, 12, 73–77. [33] Purcell W. R., Capillary Pressures – Their Measurement Using Mercury and the Calculation of Permeability Therefrom, J Petrol Technol 1949, 1, 39–48. The capillary pressure J-function is a dimensionless measure of the capillary pressure of a fluid in a porous medium.

Reservoir engineers use capillary pressure to compute the original hydrocarbon in place and to estimate the ultimate recovery using fluid flow simulation.
Anstalten hall avdelningar

tel nr till klarna kundtjanst
ebba andersson bror
lund bibliotek eböcker
tidigare ägare
från sapfo till cyborg idéer om kön och sexualitet i historien
ddu driver uninstall utility

Capillary pressure is a critical property for reservoir modeling. Reservoir engineers use capillary pressure to compute the original hydrocarbon in place and to estimate the ultimate recovery using fluid flow simulation. Traditionally, capillary pressure data are obtained from special core analysis (SCAL).

Fully defined functions. This module discusses the construction of a capillary pressure model at the core scale.

Kicks kalender innhold
madagaskar film roller

core. In reality, capillary pressure and relative permeability effects are often coupled in a single flow experiment, and their separation requires the use of a numerical simulator (Archer and Wong, 1973; Sigmund and McCaffery, 1979 and Tao and Watson, 1984). To solve for capillary pressure and relative permeability numerically from two-phase flow

It was found that the universal capillary pressure model could be reduced to the frequently-used Brooks-Corey capillary pressure model and the Li-Horne imbibition model when the fractal dimension of the porous media takes a limiting value. This also demonstrates that the Brooks-Corey model and the This disclosed subject matter is generally related to methods for characterizing two-dimensional (2D) and three-dimensional (3D) samples to determine pore-body and pore-throat size distributions and capillary pressure curves in porous media using petrographic image analysis.

gram to depict the capillary pressure and permeability behaviors in the transition zone is shown in Fig. 1. Leverett J-function (Leverett 1941) is widely used as drainage-type capillary pressure model, but it is restricted to water-wet reservoirs and may generate erroneous results to describe mix-wet reservoirs (Masalmeh 2002). Thomeer

The capillary pressure J-function is a dimensionless measure of the capillary pressure of a fluid in a porous medium. The function was derived based on a capillary bundle model. However, the 2014-09-01 · Thomeer (1960) presented a mathematical model to describe capillary pressure curves using three parameters. He also proposed, graphically, a relationship between air permeability and the introduced parameters. Thomeer J. H. M., Introduction of a pore geometrical factor defined by the capillary pressure curve, J Petrol Technol 1960, 12, 73–77.

The capillary pressure curves of the three different blocks are described in figure 3(a). The capillary pressure curves can characterize the pore structure of the core samples. There are multiple pore structures among the selected core samples because of the various capillary pressure curves. New Mexico Institute of Mining and Technology A comparison of the capillary pressure derived water saturation and that from a conventional Simandoux porosity-resistivity model is shown below. Example showing SWpc (black), SWsimandoux (blue), SWcore (black dots), and SOcore (red dots) in Track 5. capillary pressure model was derived theoretically. It was found that the universal capillary pressure model could be reduced to the frequently-used Brooks-Corey capillary pressure model and the Li-Horne imbibition model when the fractal dimension of the porous media takes a limiting value.