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LWD Quality Control: Standard Procedure
Logging while drilling (LWD) offers opportunities to improve horizontal well drilling efficiency without extending the well construction period....
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Corrections of logging-while-drilling electromagnetic resistivity logging data acquired from the horizontal well for the shale oil reservoir
The responses of logging-while-drilling (LWD) electromagnetic resistivity logging in horizontal wells are usually complex due to the effect of the...
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Self-adaptive inversion method of electromagnetic-propagation resistivity logging while drilling data
Because of the constraint mode of the inversion objective function in the traditional resistivity-inversion method of electromagnetic-propagation...
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A study of health management of LWD tool based on data-driven and model-driven
Electromagnetic wave logging-while-drilling (LWD) tool plays an important role in unconventional oil and gas exploitation and deep-sea oil and gas...
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Coil optimization of ultra-deep azimuthal electromagnetic resistivity logging while drilling tool based on numerical simulation
This paper presents a coil optimization method of the ultra-deep azimuthal electromagnetic (EM) resistivity Logging While Drilling (LWD) to obtain...
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Detection method of coal-rock interface and low-resistivity anomalous body based on azimuth electromagnetic wave
A geological model related to coal-rock electromagnetic parameters is constructed in this work using coal-rock media and coal-rock interfaces as the...
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Empirical correlation for formation resistivity prediction using machine learning
Formation resistivity is an essential parameter for formation evaluation, petrophysics, and geochemical studies. Well logging or/and laboratory...
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Fast anisotropic resistivities inversion of logging-while-drilling resistivity measurements in high-angle and horizontal wells
Information about anisotropic resistivity is essential in real-time correlation, updating of formation model and making more confident geosteering...
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Joint inversion of resistivity and sonic logs using gradient descent method for gas hydrate saturation in the Krishna Godavari offshore basin, India
Parameters viable for characterization of gas hydrates are mostly obtained from individual logs based on rock physics-elastic theories or electrical...
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Deep learning-based method for reducing the number of transmitting coils in logging while drilling tool
Electromagnetic wave logging while drilling (LWD) technology is an important tool for evaluation of formation oil and gas content. It generally...
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Modeling of borehole washout effects and gas hydrate-filled fractures using NGHP-02 downhole data in Krishna Godavari offshore basin, India
The purpose of this study is to look into the effects of borehole washouts on log measurements and the resulting error in predicting gas hydrate...
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A Robust Mechanistic Model for Pore Pressure Prediction from Petrophysical Logs Aided by Machine Learning in the Gas Hydrate-Bearing Sediments over the Offshore Krishna–Godavari Basin, India
Pore pressure ( P P ) is the most significant and dynamic parameter in reservoir geomechanics, and it optimizes well drilling in the hydrocarbon...
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Efficient finite-volume simulation of the LWD orthogonal azimuth electromagnetic response in a three-dimensional anisotropic formation using potentials on cylindrical meshes
In this study, the cylindrical finite-volume method (FVM) is advanced for the efficient and high-precision simulation of the logging while drilling...
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A deep learning approach to the inversion of borehole resistivity measurements
Borehole resistivity measurements are routinely employed to measure the electrical properties of rocks penetrated by a well and to quantify the...
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A review of basic well log interpretation techniques in highly deviated wells
Drilling deviated wells has become customary in recent times. This work condenses various highly deviated and horizontal well log interpretation...
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A robust inversion of logging-while-drilling responses based on deep neural network
Resistivity inversion plays a significant role in recent geological exploration, which can obtain formation information through logging data....
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Application of the resistivity method in characterizing fractured aquifer in sedimentary rocks in Abakaliki area, southern Benue Trough, Nigeria
Resistivity range for groundwater-bearing fracture zones was studied in the fractured shales and sandstones of pre-Santonian sedimentary succession...
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Application of machine learning to characterize gas hydrate reservoirs in Mackenzie Delta (Canada) and on the Alaska north slope (USA)
Artificial neural network-trained models were used to predict gas hydrate saturation distributions in permafrost-associated deposits in the Eileen...
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Estimation of Gas Hydrate Saturation Regarding the Hydrate Morphology in Hydrate-Bearing Sands in the Qiongdongnan Basin, South China Sea
The GMGS6 hydrate expedition discovered hydrates in the Quaternary channel sand by logging and coring for the first time in the Qiongdongnan Basin,...
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Borehole resistivity simulations of oil-water transition zones with a 1.5D numerical solver
When simulating borehole resistivity measurements in a reservoir, it is common to consider an oil-water contact (OWC) planar interface. However, this...