scholarly journals Modeling of Partially Hydrolyzed Polyacrylamide-Hexamine-Hydroquinone Gel System Used for Profile Modification Jobs in the Oil Field

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Upendra Singh Yadav ◽  
Vikas Mahto
Keyword(s):  
Gelation Time ◽  
Temperature Stability ◽  
Oil Field ◽  
Polymer Gel ◽  
High Temperature Stability ◽  
Injection Wells ◽  
Profile Modification ◽  
Partially Hydrolyzed Polyacrylamide ◽  
Hydrolyzed Polyacrylamide ◽  
Gel System

The cross-linked polymer gel systems are being used increasingly to redirect or modify reservoir fluid movement in the vicinity of injection wells for the purpose of permeability/profile modification job in the oil field due to their high temperature stability and capability to provide rigid gel having high mechanical strength. In this study, a partially hydrolyzed polyacrylamide-hexamine-hydroquinonegel is used for the development of polymer gel system. The experimental investigation demonstrates that the gelation time varies with polymer and crosslinker concentration and the temperature. The mathematical model is developed with the help of gelation kinetics of polymer gel and using Arrhenius equation, which relates the gelation time with polymer, crosslinker concentrations, and temperature. The developed model is solved with the help of multivariate regression method. It is observed in this study that the theoretical values of gelation time have good agreement with the experimental values.

A Novel Branched Polymer Gel System with Delayed Gelation Property for Conformance Control

SPE Journal ◽  
2021 ◽  
pp. 1-11
Author(s):  
Tao Song ◽  
Qi Feng ◽  
Thomas Schuman ◽  
Jie Cao ◽  
Baojun Bai
Keyword(s):  
Gelation Time ◽  
Polymer Gels ◽  
Environmental Concerns ◽  
Water Production ◽  
Polymer Gel ◽  
Conformance Control ◽  
Branched Polymer ◽  
Chelating Ability ◽  
Hydrolyzed Polyacrylamide ◽  
Gel System

Summary Excessive water production from oil reservoirs not only affects the economical production of oil, but it also results in serious environmental concerns. Polymer gels have been widely applied to decrease water production and thus improve oil production. However, traditional polymer gels such as partially hydrolyzed polyacrylamide (HPAM)/chromium (III) gel systems usually have a short gelation time and cannot meet the requirement of some conformance control projects. This paper introduces a novel polymer gel system of which crosslinking time can be significantly delayed. A branched polymer grafted from arginine by the surface initiation method is synthesized as the backbone, chromium acetate is used as the crosslinker, and no additional additives are used for the gel system. The results show that the gelation time of this system can be delayed to 61 days at 45°C and 20 days at 65°C because of the rigid structure of the branched polymer and the excellent chromium (III) chelating ability of arginine. The polymer gels have been stable for more than 150 days at 45 and 65°C. Coreflooding and rheology tests have demonstrated that this branched polymer has good injectivity and shear resistance in high-permeabilityrocks.

Gelation Behavior of Polyacrylamide Reinforced with Nano-Silica for Water Shutoff Treatment in Oil Field

2020 ◽  
Vol 307 ◽  
pp. 252-257
Author(s):  
Nurhazwane Abdul Fadil ◽  
Sonny Irawan ◽  
Nur Amelia Mohd Isa ◽  
Siti Rohaida Shafian
Keyword(s):  
Gelation Time ◽  
Silica Content ◽  
Oil Field ◽  
Nano Silica ◽  
Water Shutoff ◽  
Silica Concentration ◽  
Gelation Behavior ◽  
Hydrolyzed Polyacrylamide ◽  
Placement Depth ◽  
Gel System

Polyacrylamide gel system is widely been used in oilfield for water shutoff treatment. Gelation behavior such as proper gelation time provides a basic guideline on gel placement depth in reservoir layers. In this study, the gelation behavior of partially hydrolyzed polyacrylamide crosslinked with chromium(III) acetate (PHPA/Cr3+) reinforced with nano-silica was studied in term of gelation time and gel stability. The gelation time of PHPA/Cr3+ gel could be controlled with the addition of nano-silica where the gel has shown a delay in gelation time at low concentration of nano-silica. At 0.3 wt.% of nano-silica concentration, the gelation time has shown two times delay compared to the original gel system. The gel at the formulations of 0.7 wt.% and 1.0 wt.% nano-silica content remained stable with H code after 24 hours observation.

Development of a Polymer Gel System for Improved Sweep Efficiency and Injection Profile Modification of IOR/EOR Treatments

2014 ◽  
Author(s):  
Freddy Crespo ◽  
B. R. Reddy ◽  
Larry Eoff ◽  
Christopher Lewis ◽  
Natalie Pascarella
Keyword(s):  
Polymer Gel ◽  
Sweep Efficiency ◽  
Profile Modification ◽  
Gel System

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.

Study on the Preparation of Polymer Gel System with Oilfield Wastewater

2012 ◽  
Vol 599 ◽  
pp. 9-13
Author(s):  
Yi Kun Liu ◽  
Xin Wan ◽  
Ji Qiang Zhi ◽  
Xiao Wang
Keyword(s):  
Setting Time ◽  
Polymer System ◽  
Oil Field ◽  
Distilled Water ◽  
Polymer Gel ◽  
Initial Setting Time ◽  
Affecting Factor ◽  
Initial Ph ◽  
Initial Setting ◽  
Gel System

The solvent that is used to make the gel is water which is widely applied on the oil-field. The solvent is actually inject water. The chromes receipt which were already used on the oil- field is listed in the experiment, The research is that according to the inject water which come from Zhuangxi and Feiyan Beach oil field to make the gel, then to observe whether the polymer system gelatinize, which one is more practical and economical. The comparison was carried out in the experiment, the gel that is made of distilled water contrast with the get which is made of Zhuangxi and Feiyan Beach inject water, then observe the affecting factor of gelatinization, such as pH, temperature, drug style, concentration. According to the experiment, the intensity of the gel which is made of the Zhuangxi oil field inject water with the HPAM of Changan Group is the largest, however initial setting time is the shortest, the intensity of Feiyan Beach gel is smallest, initial setting time is the second .HPAM from Japan which is made up by water from Zhuangxi can be gelatinized at the initial pH, but The gel which is made of distilled water and Feiyan Beach can’t be gelatinized, the adjustment of the pH and the increasing concentration can make the polymer gel.

scholarly journals Improved rheology and high-temperature stability of hydrolyzed polyacrylamide using graphene oxide nanosheet

2019 ◽  
Vol 136 (22) ◽  
pp. 47582 ◽  
Author(s):  
Maje Alhaji Haruna ◽  
Shahid Pervaiz ◽  
Zhongliang Hu ◽  
Ehsan Nourafkan ◽  
Dongsheng Wen
Keyword(s):  
Graphene Oxide ◽  
High Temperature ◽  
Temperature Stability ◽  
High Temperature Stability ◽  
Graphene Oxide Nanosheet ◽  
Hydrolyzed Polyacrylamide
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