Determination of True Formation Resistivity from LWD Conventional Resistivity Measurements in a Horizontal Well

2017 ◽  
Author(s):  
S. Fang ◽  
D. Boesing ◽  
S. Wessling
Keyword(s):  
Horizontal Well ◽  
Resistivity Measurements ◽  
Formation Resistivity

Propogation LWD Tool Analysing for Better Saturation Estimation in High Angle Horizontal Well Conditions

2021 ◽  
Author(s):  
Airat Mingazov ◽  
Andrey Zhidkov ◽  
Marat Nukhaev
Keyword(s):  
Horizontal Well ◽  
Water Saturation ◽  
Reservoir Properties ◽  
Resistivity Measurements ◽  
Well Completion ◽  
Geological Conditions ◽  
Formation Resistivity ◽  
Time Propagation ◽  
Resistivity Logging ◽  
Logging Tool

Abstract Multidepth electromagnetic logging tool is considered as traditional measurements of formation resistivity estimation while drilling. When considering data in wells with high angles trajectory, more than 70 degrees, the resistivity measurements could be affected by several factors associated with geological conditions and logging tool specifications. As the result, during water saturation estimation formation properties could be distorted, which will lead to significant effect of reservoir properties assessment and the design of the horizontal well completion. Within the framework of this paper, various methods of influence on the resistivity readings will be considered, especially with cross boundary effects and reservoir formations with anisotropy. At the same time, propagation resistivity logging technologies while drilling with interpretation and boundary propagation technologies will be observed, which has tilted azimuthal oriented receivers for geosteering service of horizontal wells and additionally helps with take into account of boundary enflurane on standard resistivity logging.

scholarly journals Determination of the Activation Energy of Polar Firn by D.C. Resistivity Measurements

1967 ◽  
Vol 6 (48) ◽  
pp. 911-915 ◽  
Author(s):  
M. P. Hochstein ◽  
G. F. Risk
Keyword(s):  
Activation Energy ◽  
Resistivity Measurements ◽  
Temperature Range

The activation energy ϵe1 of polar firn samples determined by D.C. resistivity measurements is a function of temperature and density. In the temperature range −2° C. to −10° C. ϵe1 decreases with decreasing temperature reaching a nearly constant value for temperatures colder than −10°C.; in the temperature range −10°C. to −21°C. ϵe1 was found to decrease with increasing density and to lie between 0.7 eV. and 0.4 eV.

A three-dimensional coupled well-reservoir flow model for determination of horizontal well characteristics

2020 ◽  
Vol 585 ◽  
pp. 124805 ◽  
Author(s):  
Saeed Hayati-Jafarbeigi ◽  
Mehdi Mosharaf-Dehkordi ◽  
Masoud Ziaei-Rad ◽  
Morteza Dejam
Keyword(s):  
Horizontal Well ◽  
Flow Model ◽  
Three Dimensional ◽  
Reservoir Flow

scholarly journals Determination of the Activation Energy of Polar Firn by D.C. Resistivity Measurements

1967 ◽  
Vol 6 (48) ◽  
pp. 911-915 ◽  
Author(s):  
M. P. Hochstein ◽  
G. F. Risk
Keyword(s):  
Activation Energy ◽  
Resistivity Measurements ◽  
Temperature Range

The activation energyϵe1of polar firn samples determined by D.C. resistivity measurements is a function of temperature and density. In the temperature range −2° C. to −10° C.ϵe1decreases with decreasing temperature reaching a nearly constant value for temperatures colder than −10°C.; in the temperature range −10°C. to −21°C.ϵe1was found to decrease with increasing density and to lie between 0.7 eV. and 0.4 eV.

A method to determine the magnetotelluric static shift from DC resistivity measurements in practice

Geophysics ◽  
2010 ◽  
Vol 75 (1) ◽  
pp. F23-F32 ◽  
Author(s):  
Simona Tripaldi ◽  
Agata Siniscalchi ◽  
Klaus Spitzer
Keyword(s):  
Electrode Spacing ◽  
Impedance Tensor ◽  
Static Shift ◽  
Data Set ◽  
Resistivity Measurements ◽  
Electromagnetic Methods ◽  
Strike Direction ◽  
Distortion Matrix ◽  
Source Electrode

Many efforts have been made to face magnetotelluric (MT) static shift. Impedance tensor analyses give insight to the presence of this feature and allow the determination of some parameters described by the MT distortion matrix. A quantitative determination of the full distortion matrix is, however, still difficult and needs additional measurements. In addition to MT, other electric and electromagnetic methods also are effected by static shift. Using direct current resistivity techniques, e.g., we can determine the static-shift factors in a simpler way because the sources can be controlled. Generally, because the distortion matrix has four entries, four additional quantities have to be determined to describe the static shift completely. They can be achieved, e.g., through measuring two orthogonal electric field components for two orthogonal source configurations. The source electrode spacing, however, has to be sufficiently large to resemble horizontal currents and match the MT plane-wave analog. The procedure at hand extracts the static-shift factors from multielectrode measurements after this condition is met. For the sake of simplicity and demonstration purposes, only inline measurements orthogonal to the strike direction of a 2D model are considered so that the vectorial problem reduces to a scalar one. This procedure is applied to a MT field data set in a regional 2D environment that shows only two additional quantities are necessary to determine the static shift.

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