Development of a High-Temperature-Resistant Polymer-Gel System for Conformance Control in Jidong Oil Field

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.

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

SPE Journal ◽

10.2118/206742-pa ◽

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.

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An Optimization Study of Polyacrylamide-Polyethylenimine-Based Polymer Gel for High Temperature Reservoir Conformance Control

International Journal of Polymer Science ◽

10.1155/2018/2510132 ◽

2018 ◽

Vol 2018 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

Zulhelmi Amir ◽

Ismail Mohd Saaid ◽

Badrul Mohamed Jan

Keyword(s):

High Temperature ◽

Raw Materials ◽

Gelation Time ◽

Quadratic Equation ◽

Quadratic Model ◽

Polymer Gel ◽

Performance Information ◽

Conformance Control ◽

Crosslinked Polymer ◽

Optimization Study

This paper presents optimization formulation of organically crosslinked polymer gel for high temperature reservoir conformance control using response surface methodology (RSM). It is always desirable to approach an optimal polymer gel formulation study with adequate performance information related to viscosity and gelation time to minimize excessive water production. In this paper, the effects of polymer and crosslinker concentrations and their influences on gelation time and viscosity were investigated. Central composite design (CCD) was used to determine the optimized organically crosslinked polymer gel formulation. Concentrations of two main raw materials, namely, polyacrylamide (PAM) and polyethylenimine (PEI), were varied in a suitable range. This was to obtain the formulation with the desirable two vital responses, which are viscosity and gelation time. It was found that the results fitted the quadratic equation. Statistically, the quadratic model is reliable and adequate perfectly the variability of the responses obtained from the experimental data. In addition, gelation time and gel viscosity may be controlled by adjusting both polymer and crosslinker concentrations. The optimum formulated organically crosslinked polymer gel with significant desirability factor conditions was achieved at 1.5% w/v of PAM and 0.3% v/v of PEI.

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In situ organically cross-linked polymer gel for high-temperature reservoir conformance control: A review

Polymers for Advanced Technologies ◽

10.1002/pat.4455 ◽

2018 ◽

Vol 30 (1) ◽

pp. 13-39 ◽

Cited By ~ 8

Author(s):

Zulhelmi Amir ◽

Ismail Mohd Said ◽

Badrul Mohamed Jan

Keyword(s):

High Temperature ◽

Polymer Gel ◽

Conformance Control

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

Journal of Petroleum Engineering ◽

10.1155/2013/709248 ◽

2013 ◽

Vol 2013 ◽

pp. 1-11 ◽

Cited By ~ 4

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.

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