New Methods for Modeling Laterolog Resistivity Corrections

Jarzyna, J.; Cichy, A.; Drahos, D.; Galsa, Attila; Bała, Maria; Ossowski, Andrzej

doi:10.1515/acgeo-2016-0012

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…In the face of such imperfections in well logging measurement, scientists and engineers proposed clarifying the phenomenon of the overstating of resistivity by modeling the responses of electrical probes in a simulated environment similar to the real one in which the Groningen effect is generated (Anderson 2001, Yang et al 2007, Jarzyna et al 2016. Numerical modeling began to develop quickly along with access to computers with faster and faster processors which were able to quickly obtain outcomes.…”

Section: Computer Modeling Solutionsmentioning

confidence: 99%

“…The Coulomb charge method was applied to calculate resistivity measured by a Dual Laterolog device in a non-homogeneous medium to obtain relationships between apparent LLD and LLS resistivity as a function of D/d, Rxo/Rm and Rt/Rm. The modeling results were used to construct nomograms similar to those used by commercial companies (Jarzyna et al 2016). Using these nomograms, a procedure of corrections was implemented using the Poprawki software.…”

Section: Computer Modeling Solutionsmentioning

confidence: 99%

“…The Groningen effect means an anomalously high resistivity reading on a LLD curve from a Laterolog device of the highest radius of investigation that occurs approximately 30 m below a thick, highly resistive bed such as the thick evaporitic Zechstein caprock in the Groningen field. Many constructive/tool design, modeling and interpretational solutions have been tested all over the world in the long period between the sixties and the present day (Yang et al 2007, Nam et al 2010, Cichy & Ossowski 2015, Jarzyna et al 2016 to remove the Groningen effect and obtain the proper resistivity value required to calculate water/hydrocarbon saturation. Unfortunately, in some situations, correct measurements are difficult to obtain due to unfavorable geological conditions.…”

Section: Introductionmentioning

confidence: 99%

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The measurement and interpretation methodology of resistivity logs affected by the Groningen effect – a Polish case study

Baudzis

Jarzyna

Puskarczyk

2020

geol

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True formation resistivity Rt measurement is one of the fundamental logs in the calculation of hydrocarbon resources. That is why it is very important to have the most reliable resistivity data possible. In this paper, the various outcomes obtained by Polish well log analysts and engineers for the proper determination of hydrocarbon saturation in the Main Dolomite deposits in the Polish Lowland are presented. The long history of efforts directed to make proper exploitation decisions in wells where the Groningen effect has been observed is illustrated, starting with the standard measurement and interpretational approach, through the modified construction of a reference electrode in a Laterolog device and ending with an examination of HRLA (High-Resolution Laterolog Array) or Array Compensated Resistivity Tool) ACRt results. The processing of resistivity logs with the special Poprawki software is included.

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Section: Computer Modeling Solutionsmentioning

confidence: 99%

Section: Computer Modeling Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The measurement and interpretation methodology of resistivity logs affected by the Groningen effect – a Polish case study

Baudzis

Jarzyna

Puskarczyk

2020

geol

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“…1). The equations and boundary conditions controlling the electric field are as follows (Li et al, 1980;Pan et al, 2013;Jarzyna et al, 2016):…”

Section: Numerical Simulation Of Array Laterolog Response With Femmentioning

confidence: 99%

Study on array laterolog response simulation and mud-filtrate invasion correction

Zhao

Qin

Pan

et al. 2019

Adv. Geo-Energy Res.

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It is a complicated task to evaluate the reservoirs influenced by mud-filtrate invasion. This study presents numerical simulation results of array laterolog response and the approach for mud-filtrate invasion correction. Considering differential equations and boundary conditions of the steady current field in the rock medium, finite element method is utilized to solve the Laplace equation. Then the potential value at each node is calculated along with the apparent resistivity of six measuring modes of array laterolog. Based on the numerical results, the array laterolog response is affected by various parameters including borehole radius, mud-filtrate resistivity, mud-filtrate invasion radius and invaded zone resistivity. Correction charts for borehole and mud-filtrate invasion are developed to accurately obtain the mud-filtrate invasion depth and the true resistivity of the uninvaded formation. The correction chart has been applied to the real array laterolog data of a sandstone reservoir, which the corrected resistivity is closer to the true formation resistivity.

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Series Expansion-Based Genetic Inversion of Wireline Logging Data

Szabó

Dobróka

2018

Math Geosci

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New Methods for Modeling Laterolog Resistivity Corrections

Cited by 6 publications

References 8 publications

The measurement and interpretation methodology of resistivity logs affected by the Groningen effect – a Polish case study

The measurement and interpretation methodology of resistivity logs affected by the Groningen effect – a Polish case study

Study on array laterolog response simulation and mud-filtrate invasion correction

Series Expansion-Based Genetic Inversion of Wireline Logging Data

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