Research of Polyacrylamide Gel Application for Water Shutoff in High Temperature Fractured Granite Basement Reservoirs

2001 ◽  
Author(s):  
Nguyen Phuong Tung ◽  
Pham Viet Hung ◽  
Ngo Quang Vinh ◽  
Bui Quang Khanh Long
Keyword(s):  
High Temperature ◽  
Polyacrylamide Gel ◽  
Water Shutoff ◽  
Basement Reservoirs ◽  
Fractured Granite ◽  
Granite Basement

Rapid Synthesis of Bi Substituted Ca3Co4O9 by a Polyacrylamide Gel Method and its High-Temperature Thermoelectric Power Factor

2010 ◽  
Vol 434-435 ◽  
pp. 393-396 ◽  
Author(s):  
Ying Song ◽  
Qiu Sun ◽  
Li Rong Zhao ◽  
Fu Ping Wang
Keyword(s):  
High Temperature ◽  
Thermoelectric Power ◽  
Power Factor ◽  
Solid State Reaction Method ◽  
Polyacrylamide Gel ◽  
Measured Temperature ◽  
Thermoelectric Power Factor ◽  
Gel Method ◽  
Plasma Sintering ◽  
Polyacrylamide Gel Method

A series of polycrystalline (Ca1-xBix)3Co4O9 ( x = 0.0 ~ 0.075 ) powders were synthesized rapidly by a polyacrylamide gel method. The dense ceramics were fabricated using the spark plasma sintering ( SPS ) technique. Effects of Bi substitution on high temperature thermoelectric properties of Ca3Co4O9 were evaluated. Both the electrical conductivity and Seebeck coefficient increased with increasing Bi content up to x = 0.05, thus leading to an enhanced thermoelectric power factor. The Bi substituted sample with x = 0.05 obtained in this study has the highest thermoelectric power factor in the measured temperature range. It reaches 4.810-4 Wm-1K-2 at 700 °C, which is 26 % higher than that of Ca3Co4O9 without Bi substitution, and is by up to 15 % larger as compared to the Bi substituted sample synthesized by the solid state reaction method and the SPS technique due to the high chemical homogeneous powder prepared by the polyacrylamide gel method.

scholarly journals Geochemical implication of 87Sr/86Sr ratio of high-temperature deep groundwater in a fractured granite aquifer

2008 ◽  
Vol 42 (5) ◽  
pp. 429-441 ◽  
Author(s):  
SEUNG-GU LEE ◽  
TONG-KWON KIM ◽  
JIN-SOO LEE ◽  
TAE JONG LEE ◽  
BYONG WOOK CHO ◽  
...  
Keyword(s):  
High Temperature ◽  
86Sr Ratio ◽  
Deep Groundwater ◽  
Fractured Granite
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