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Rock Physics Modelling for Estimation of Gas Hydrate Saturation Using NGHP-02 Well Data in the Krishna–Godavari Basin
The gas hydrate found in the eastern continental margin of India is a boon for this energy-deficient develo** country. We used four wells of the...
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Petro-physics Analysis and Rock Physics Modeling for Estimation of Gas Hydrate Saturation: A Case Study in the Mahanadi Offshore Basin
Gas hydrate saturation (S h ) is the most challenging key parameter of petrophysical evaluations for reservoir characterization. In total three wells...
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3D FEM simulation of responses of LWD multi-mode resistivity imaging sonde
A new multi-mode resistivity imaging sonde, with toroidal coils as source, can conduct three resistivity measurements: azimuthal resistivity, lateral...
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Detection performance of azimuthal electromagnetic logging while drilling tool in anisotropic media
Azimuthal electromagnetic (EM) logging while drilling (LWD) has been extensively used in high-angle and horizontal (HA/HZ) wells. However, due to the...
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Joint elastic-electrical effective medium modeling for improved hydrate quantification
The occurrence of gas hydrates significantly alters the elastic and electrical responses of the host sediments. It is expected that joint inversion...
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Multidisciplinary Approach to Geosteering
Geosteering while drilling horizontal wells allows to keep a horizontal wellbore within a hydrocarbon pay zone, maximize economic production from the...
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Real-time updating method of local geological model based on logging while drilling process
The updating of reservoir geological models has become a research hotspot. Nevertheless, two difficulties continue to hinder the development of...
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Drilling and Logging
Once the location of the prospect (hydrocarbon accumulation) the next step is to drill a well. Drilling is the sum total of all the complex...
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Assessment of aquifer vulnerability in fractured rocks in the Abakaliki area, southeastern Nigeria, using geophysical and geological data
A combination of the integrated electrical conductivity (IEC), aquifer vulnerability index (AVI), and the groundwater hydraulic confinement-overlying...
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Detection performance and inversion processing of logging-while-drilling extra-deep azimuthal resistivity measurements
We present systematic investigations on the physics, detection performance and inversion of logging-while-drilling extra-deep azimuthal resistivity...
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Study on Ultra-deep Azimuthal Electromagnetic Resistivity LWD Tool by Influence Quantification on Azimuthal Depth of Investigation and Real Signal
This paper proposes a new tool design of ultra-deep azimuthal electromagnetic (EM) resistivity logging while drilling (LWD) for deeper geosteering...
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Design of a downlink algorithm for rotary steering (logging while drilling) systems
For logging while drilling (LWD) systems, it is necessary to adjust the working state of the downhole tools in real-time according to different...
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Physical characteristics of high concentrated gas hydrate reservoir in the Shenhu production test area, South China Sea
High concentrated and heterogeneous distribution of gas hydrates have been identified in the gas hydrate production test region in the Shenhu area,...
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Numerical simulation and dimension reduction analysis of electromagnetic logging while drilling of horizontal wells in complex structures
Electromagnetic logging while drilling (LWD) is one of the key technologies of the geosteering and formation evaluation for high-angle and horizontal...
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Adaptive boosting of random forest algorithm for automatic petrophysical interpretation of well logs
The power of Machine Learning is demonstrated for automatic interpretation of well logs and determining reservoir properties for volume of shale,...
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A Review of the Exploration, Discovery and Characterization of Highly Concentrated Gas Hydrate Accumulations in Coarse-Grained Reservoir Systems Along the Eastern Continental Margin of India
The analysis of 3-D seismic data has become one of the most powerful ways to identify sand-rich gas hydrate reservoir systems and to directly...
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Application of Horizontal Well Seismic Geological Steering Technology in Weiyuan Shale Gas Field
The Qiongzhusi Formation shale gas in Weiyuan area of Sichuan Basin is deeply buried, with complex structure, rapid change of formation dip angle,...
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Practical Application of Geological Engineering Integrated Horizontal Well Drilling Technology in Complex Fault Block Reservoir of Niger
Niger is located in the hinterland of Sahara Desert, where fault blocks are scattered and distributed in a zonal pattern. The typical fault block,...
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Simultaneous estimation of in situ porosity and thermal structure from core sample measurements and resistivity log data at Nankai accretionary prism
The shallow accretionary prism of the Nankai Trough is a location where both large interplate earthquakes and slow earthquakes occur. Since the...
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Development and Application of FITS Through-Drilling-Tool High Resolution Array Sonic Logging Tool
In the late stage of oilfield development, highly deviated wells, horizontal wells,extended reach wells and wells with complex conditions are quite...