Enhanced foam stability by adding comb polymer gel for in-depth profile control in high temperature reservoirs

2015 ◽  
Vol 482 ◽  
pp. 115-124 ◽  
Author(s):  
Guang Zhao ◽  
Caili Dai ◽  
Yanhui Zhang ◽  
Ang Chen ◽  
Zhihu Yan ◽  
...  
Keyword(s):  
High Temperature ◽  
Depth Profile ◽  
Foam Stability ◽  
Polymer Gel ◽  
Profile Control ◽  
Comb Polymer

Development and Evaluation of Salt-Resisting Polymer Gel Profile Control Agent

2013 ◽  
Vol 781-784 ◽  
pp. 426-430 ◽  
Author(s):  
Guang Yang ◽  
Jian Zhang ◽  
Xin Sheng Xue ◽  
Ying Xian Cui ◽  
Wen Sen Zhao
Keyword(s):  
High Temperature ◽  
Storage Modulus ◽  
Water Erosion ◽  
Control Agent ◽  
Polymer Gel ◽  
Laboratory Findings ◽  
Water Shutoff ◽  
Profile Control ◽  
Weak Gel

Be aimed at the characteristics of high temperature-salinity and severe heterogeneity of Bohai oilfield. This paper studies three different strength kinds of polymer gel profile control agents. Use storage modulus evaluates strength of polymer gel. the result indicate that the storage modulus of weak gel is between0.1 Pa and 1.0 Pa, the storage modulus of moderate gel is between1.0 Pa and 3.1 Pa, the maximal value of powerful gels storage modulus is11.9 Pa during 90 days. Core laboratory findings indicate that these different strength kinds of polymer gel have well formation sealing quality and endure washing out quality,40PV by water erosion , the formation sealing rate is up 90%.the experiment result of water shutoff and flooding oil indicate that the EOR is13.44% in heterogeneity core.

The Research on Cross-linking Polymer Gel as In-depth Profile Control Agent

2009 ◽  
Vol 27 (12) ◽  
pp. 1300-1311 ◽  
Author(s):  
Y. He ◽  
S. Xiong ◽  
Z. Yang ◽  
X. Ruan ◽  
Y. Gong
Keyword(s):  
Depth Profile ◽  
Control Agent ◽  
Cross Linking ◽  
Polymer Gel ◽  
Profile Control

Manufacturability Study for Etching High-Density BST/Pt Capacitors

2000 ◽  
Vol 655 ◽  
Author(s):  
Jay Hwang
Keyword(s):  
High Temperature ◽  
Etch Rate ◽  
Control Process ◽  
High Density ◽  
Wafer Surface ◽  
Plasma Chamber ◽  
Reactive Plasma ◽  
Pt Electrodes ◽  
Profile Control

AbstractProfile control, process repeatability and productivity concerns in etching Pt electrodes are reviewed specifically for application in fabricating high-density BST/Pt capacitors. The approach of using a high temperature cathode in a high-density reactive plasma chamber has produced a repeatable >85° Pt profile, stable etch rate and low particle results over a 500-wafer marathon test. A “corrosion-like” BST defect can be prevented by adding a post etch treatment to remove any corrosive residue from the wafer surface. A feasible manufacturing solution for etching BST/Pt capacitors for future high-density DRAM application is demonstrated.

Thermal stability of nickel-cobalt multilayer silicide

2005 ◽  
Vol 891 ◽  
Author(s):  
Kil Jin Han ◽  
Yu Jung Cho ◽  
Soon Young Oh ◽  
Yong Jin Kim ◽  
Won Jae Lee ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Depth Profile ◽  
Ternary Phase ◽  
Nickel Silicide ◽  
Composition Gradient ◽  
Cobalt Silicide ◽  
Nickel Cobalt ◽  
Thermal Stability Of ◽  
Xps Depth Profile

ABSTRACTIn this study, we have investigated the structure of nickel-cobalt silicide to understand its behavior at high temperature. Nickel-cobalt silicide was formed after two-step RTP at 500°C and 700°C respectively. We could observe by TEM that nickel-cobalt silicide consists of a structure which seems to be a Ni-Co-Si ternary phase. No nickel silicide phases and cobalt silicide phases were detected in nickel-cobalt silicide by XRD. From XPS depth profile, we could confirm that there is a cobalt composition gradient along the silicide.

Compatibility evaluation of in-depth profile control agents in dominant channels of low-permeability reservoirs

2020 ◽  
Vol 194 ◽  
pp. 107529 ◽  
Author(s):  
Junjian Li ◽  
Ze Wang ◽  
Hanxu Yang ◽  
Hai'en Yang ◽  
Tianjiang Wu ◽  
...  
Keyword(s):  
Depth Profile ◽  
Low Permeability ◽  
Profile Control ◽  
Low Permeability Reservoirs

scholarly journals Delayed Crosslinking Amphiphilic Polymer Gel System with Adjustable Gelation Time Based on Competitive Inclusion Method

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 381 ◽  
Author(s):  
Bin Xu ◽  
Huiming Zhang ◽  
He Bian
Keyword(s):  
Gelation Time ◽  
Salt Resistance ◽  
Amphiphilic Polymer ◽  
Polymer Gel ◽  
Polymer Backbone ◽  
Temperature Resistance ◽  
Inclusion Method ◽  
Profile Control ◽  
Resistance Performance ◽  
Gel System

Delayed crosslinking polymer gel systems are widely utilized in deep profile control processes for water production control in oilfields. In this paper, a kind of delayed crosslinking amphiphilic polymer gel system with adjustable gelation time based on competitive inclusion was prepared and its delayed crosslinking gelling properties were studied. The amphiphilic polymer of P(acrylamide (AM)–sodium acrylate (NaA)–N-dodecylacrylamide (DDAM)) was synthesized and it showed much better salt resistance, temperature resistance, and shear resistance performance compared with hydrolyzed polyacrylamide (HPAM). Phenol can be controlled released from the the cavity of β-cyclodextrin (β-CD) ring in the presence of the hydrophobic group used as the competitive inclusion agent in the amphiphilic polymer backbone. Accordingly, the gelation time of the delayed crosslinking amphiphilic polymer gel system is closely related to release rate of the crosslinker from the the cavity of β-CD ring. This study screened an amphiphilic polymer with good salt resistance and temperature resistance performance, which can be used in high temperature and high salinity reservoirs, and provided a feasible way to control the gelation time of the polymer gel system by the competitive inclusion method.

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