Stress-Sensitive Permeability in a High-Permeability Sandstone Reservoir-The Kuparuk Field

1983 ◽  
Author(s):  
B.H. Adams
Keyword(s):  
High Permeability ◽  
Sandstone Reservoir

Research on Stress Sensitivity of Low Permeability Sand Stone Reservoir

2011 ◽  
Vol 317-319 ◽  
pp. 2432-2435
Author(s):  
Yu Xue Sun ◽  
Fei Yao ◽  
Jing Yuan Zhao
Keyword(s):  
Plastic Deformation ◽  
In Situ Stress ◽  
Stress Sensitivity ◽  
Oil Field ◽  
Low Permeability ◽  
High Permeability ◽  
Permeability Changes ◽  
Loading And Unloading ◽  
Sandstone Reservoir

In the process of low-permeability sandstone reservoir exploitation, stress sensitivity takes place with the effective stress rises gradually, which will cause permeability decline. Allowing to the condition of in-situ stress, the study and experiment on the rock core in Jilin oil field Fuxin326 oil layer are presented. The experimental results show that the stress sensitivity of this oil layer is small; the regularity of permeability changes is in accordance with exponential function. The stress sensitivity of high permeability core is larger than that of low permeability core. Moreover, experimental and theoretical analysis shows that low permeability core has a larger permeability loss than high permeability core in loading and unloading process where elastic plastic deformation of rock will happen, which is the major reason that permeability loss can not return completely.

Radial Jet Drilling Improves Injectivity & Conformance in High Permeability Layered Sandstone Reservoir Across Mangala, Bhagyam & Aishwarya Onshore Fields in India

2020 ◽  
Author(s):  
Ankesh Nagar ◽  
Anatoly Savelyev ◽  
Aditya Mukerjee ◽  
Ian Hatchell ◽  
Henk Jelsma ◽  
...  
Keyword(s):  
High Permeability ◽  
Sandstone Reservoir

Study of Non-Equilibrium Arms Bridge Circuit for Water Plugging of Horizontal Wells in Sandstone Reservoir

2014 ◽  
Vol 912-914 ◽  
pp. 765-768
Author(s):  
Gang Xie ◽  
Hai Jun Yan ◽  
Deng Feng Ju ◽  
Zhi Ma ◽  
Ai Jun Wei ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Bridge Circuit ◽  
Circuit Simulation ◽  
Horizontal Wells ◽  
Low Permeability ◽  
High Permeability ◽  
Vertical Wells ◽  
Sandstone Reservoir ◽  
Water Cut ◽  
Depth Water

In view of rapid water cut increasing and poor oil recovery with banded distribution with high permeability belt in sandstone reservoir of Huabei Oilfield,the electrical bridge technique for water shut-off is proposed. Based on years practice of vertical wells and similarity in Ohms and Darcys laws,the electrical model involved variable resistors series/parallel instead of reservoir distribution,the arm-bridge circuit combined with signal detection. Then response of the circuit by variable water shut-off could be simulated. The results indicated that,the driving pressure and seepage quantity at mid-low permeability channel could be greatly improved by the strong in-depth water-plugging at high permeability channel (L=20~40m),and the low permeability flowrate increased to a maximum of 55.3%. Then the gel dam in-depth fluid diversion technique was verified by water plugging and circuit simulation. The conclusions provided a valuable guidance for horizontal wells development enhanced.

Stress Sensitivity of Low-Permeability Sandstone Reservoir

2013 ◽  
Vol 753-755 ◽  
pp. 686-689 ◽  
Author(s):  
Shi Ji Li ◽  
Ze Hua Wang ◽  
Yu Xue Sun ◽  
Jian Bo Xie
Keyword(s):  
Plastic Deformation ◽  
Theoretical Analysis ◽  
Exponential Function ◽  
Effective Stress ◽  
Stress Sensitivity ◽  
Low Permeability ◽  
High Permeability ◽  
Permeability Changes ◽  
Loading And Unloading ◽  
Sandstone Reservoir

In the time of low-permeability sandstone reservoir explored, effective stress rise gradually, stress sensitivity has happened, which cause permeability decline. Allowing to initial geostress, the study on Jilin oilfield Fuxin326 oil layer and made the rock core experiment are presented. The experimental results show that the stress sensitivity of this oil layer is small the regularity of permeability changes is in accordance with exponential function. The stress sensitivity of high permeability core is larger than low permeability. Moreover, experiments and theoretical analysis shows that low permeability core has a smaller permeability loss than high permeability core in load and unload process. Loading and unloading process leads to elastic plastic deformation of rocks, and it is the major reason which permeability can not return completely.

Effective Loading Method of High- permeability Magnetic Sheet for NFC/WPT Hybrid Antenna

2017 ◽  
Vol 137 (6) ◽  
pp. 826-833
Author(s):  
Takaho Sekiguchi ◽  
Hiromu Odanaka ◽  
Yoshinobu Okano ◽  
Satoshi Ogino
Keyword(s):  
High Permeability ◽  
Loading Method

Development of High Permeability Core Materials for Embeddable Inductors in Flexible Organic Substrates

2003 ◽  
Vol 769 ◽  
Author(s):  
C. K. Liu ◽  
P. L. Cheng ◽  
S. Y. Y. Leung ◽  
T. W. Law ◽  
D. C. C. Lam
Keyword(s):  
Low Temperature ◽  
Sol Gel ◽  
Circuit Board ◽  
Organic Substrates ◽  
Circuit Boards ◽  
High Permeability ◽  
Electrical Measurements ◽  
Different Temperatures ◽  
Spiral Inductors ◽  
Ceramic Tape

AbstractCapacitors, resistors and inductors are surface mounted components on circuit boards, which occupy up to 70% of the circuit board area. For selected applications, these passives are packaged inside green ceramic tape substrates and sintered at temperatures over 700°C in a co-fired process. These high temperature processes are incompatible with organic substrates, and low temperature processes are needed if passives are to be embedded into organic substrates. A new high permeability dual-phase Nickel Zinc Ferrite (DP NZF) core fabricated using a low temperature sol-gel route was developed for use in embedded inductors in organic substrates. Crystalline NZF powder was added to the sol-gel precursor of NZF. The solution was deposited onto the substrates as thin films and heat-treated at different temperatures. The changes in the microstructures were characterized using XRD and SEM. Results showed that addition of NZF powder induced low temperature transformation of the sol-gel NZF phase to high permeability phase at 250°C, which is approximately 350°C lower than transformation temperature for pure NZF sol gel films. Electrical measurements of DP NZF cored two-layered spiral inductors indicated that the inductance increased by three times compared to inductors without the DP NZF cores. From microstructural observations, the increase is correlated with the changes in microstructural connectivity of the powder phase.

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