Laboratory evaluation on temporary plugging performance of degradable preformed particle gels (DPPGs)

Zhu, Daoyi; Xu, Zhijie; Sun, Renxian; Fang, Xingyu; Gao, Dawei; Jia, Xiaoxu; Hu, Jingru; Weng, Jintao

doi:10.1016/j.fuel.2020.119743

Cited by 48 publications

(21 citation statements)

References 31 publications

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“…They are synthesized at surface facilities by mixing acrylamide, cross-linker, initiator, and other additives and then cut into slices, dried, and mechanically ground before usage . PPGs can superiorly advance into fracture-like channels or fractures to decrease their permeability; this allows the subsequent displacement fluid to enter the unswept low permeability layer …”

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

“…A preformed particle gel (PPG) is designed to be used in reservoirs with fractures or high-permeability channels, , and it has been recommended by many researchers. − They are synthesized at surface facilities by mixing acrylamide (AM), cross-linker, initiator, and other additives and then cut into slices, dried, and mechanically ground before usage . In China, PPG has been used thousands of times in oil field profile control and water shutoff applications. , A typical application example of PPG is in the Zhongyuan Oil Field. The average permeability of the sandstone reservoir in the treated zone is 120 × 10 –3 μm 2 .…”

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

“…269 PPGs can superiorly advance into fracture-like channels or fractures to decrease their permeability; this allows the subsequent displacement fluid to enter the unswept low permeability layer. 270 3.6.2. Development of Gel System.…”

Section: Factors Impacting the Biomineralization Processmentioning

confidence: 99%

“…269 In China, PPG has been used thousands of times in oil field profile control and water shutoff applications. 270,314 A typical application example of PPG is in the Zhongyuan Oil Field. The average permeability of the sandstone reservoir in the treated zone is 120 × 10 −3 μm 2 .…”

Section: Factors Impacting the Biomineralization Processmentioning

confidence: 99%

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Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

et al. 2021

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Carbon capture and storage (CCS) technology has been widely investigated to decrease the greenhouse effect. Geological CO2 storage sites are targeted mainly on depleted petroleum reservoirs or deep saline aquifers. However, CO2 leakage might take place through wellbores, cap rocks, reservoir fractures, or faults during or after the process of CO2 storage leading to environmental problems. To minimize these hazards, different kinds of sealants have been developed and applied. This review aims to summarize those materials applicable to CO2 leakage remediation. On the basis of the sealing mechanisms and compositions of different sealant materials, they were divided into seven major types: Portland cement, geopolymer cement, resins, biofilms barriers, gel systems, foams, and nanoparticles. For different types of sealants, their application background, chemical and physical properties, CO2 leakage remediation mechanism, impact factors of sealing performance, advantages, and limitations were summarized. Future development directions for these sealant materials are also recommended. To solve the problem caused by the weak acid-resistant performance of Portland cement, anti-CO2 materials should be developed and added to the formulation. Environmentally friendly materials need to be designed to replace some current user-hostile compositions in the geopolymer cement. Moreover, chemicals that can control the geopolymerization process are also required because of the high curing temperature requirement for the recent geopolymer productions. The injectivity of Portland cement and resin limits its application for in-depth CO2 leakage control; however, gels with relatively low viscosity during the injection can be a good alternative, although their thermal stability and strength need to be further enhanced. Biotechnology and nanotechnology are perspectives to be applied in the CO2 leakage control process. Foams with good stability might be used for CO2 leakage remediation in the porous medium without fractures, but their life cycle should be prolonged.

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Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

Section: Factors Impacting the Biomineralization Processmentioning

confidence: 99%

Section: Factors Impacting the Biomineralization Processmentioning

confidence: 99%

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Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

et al. 2021

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“…For example, the chemically degradable gels may be used in applications including zonal isolation in enhanced oil recovery (EOR), loss circulation, wellbore strengthening treatments, and reservoir application such as in controlling the permeability of the formation, etc. − Moreover, a self-degradable thermal gel has been manufactured by introducing a thermally degradable crosslinking structure such as polyethylene glycol diacrylate (PEGDA) into a conventional gel for flexible application and preventing damage to the reservoir. Meanwhile, this kind of gel is not suitable for use in the wellbore because its degradation process relies on the decomposition of ester bonds and an acid is produced in this process, which greatly affects the gel’s adhesive ability to the wall of the well, resulting in poor pressure performance. − …”

Section: Introductionmentioning

confidence: 99%

Development of a High-Strength and Adhesive Polyacrylamide Gel for Well Plugging

Cheng

Qin

Su³

et al. 2022

ACS Omega

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Addition of melamine formaldehyde (MF) as a crosslinker containing hydroxymethyl to partially hydrolyzed poly(acrylamide) (HPAM) generated covalently crosslinked in situ gels through chemically nucleophilic attack by hydroxymethyl groups to amide in an HPAM backbone, which was demonstrated by FTIR spectrum analysis and rheological studies. NH4Cl could act as a catalyst to reduce the gelation time from 7 days in dilute water to 8 h in the presence of 0.8 wt % NH4Cl. Compared to high-temperature HPAM/phenol/formaldehyde and HPAM/Cr3+ gel systems, this gel has better adhesion and higher strength over a broad range of temperature from 60 to 100 °C under reservoir conditions with a denser and hook-like three-dimensional microstructure. Pressure-bearing capacity experiments demonstrated that the gel could efficiently plug high pressure from underneath to seal the wellbore, attributing to its high strength and good adhesion. This study could aid petroleum engineers in applying soft materials on controlling the pressure via polymer gels.

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Research and performance evaluation of modified nano‐silica gel plugging agent

Zheng

Luo

2023

J of Applied Polymer Sci

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Due to the difficulties in plugging high-pressure injection wells, the short period of plugging, and the use of modified nano-silica, a novel chemical gel plugging agent has been created. Modification of silica using silane coupling agents, and using the aqueous free radical polymerization method synthesized chemical plugging agent with AM, AA, and DMDAAC. The optimum synthesis conditions were screened by single-factor analysis: mass ratio m(AM):m (AA):m(DMDAAC) = 8:1.5:1, modified nano-silica concentration of 1.0%, total monomer mass concentration of 8.0%, initiator concentration of 0.3%, the cross-linker concentration of 0.4%, and coagulant concentration of 0.6%. The performance of the chemical plugging agent was evaluated under the target oil formation conditions. The experimental results showed that the chemical plugging agent exhibited good temperature resistance at 40-100 C, good salt resistance at mineralization (0.5-2.5) Â 10 4 mg/L, and the chemical plugging agent breaks through pressure gradients of 1.12, 15.42 and 90.15 MPa/m in the wellbore, fracture and core, respectively, compared with most gel plugging agents, this plugging agent is more suitable for sealing with pressure work. After adding the breakout agent, the fluid after breakout is fluid-like with low viscosity, which is convenient for reverse discharge and will not cause harm to the reservoir and ensure the subsequent normal construction operation.

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Laboratory evaluation on temporary plugging performance of degradable preformed particle gels (DPPGs)

Cited by 48 publications

References 31 publications

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Development of a High-Strength and Adhesive Polyacrylamide Gel for Well Plugging

Research and performance evaluation of modified nano‐silica gel plugging agent

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Laboratory evaluation on temporary plugging performance of degradable preformed particle gels (DPPGs)

Cited by 48 publications

References 31 publications

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO2 Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO2 Capture and Storage Process

Development of a High-Strength and Adhesive Polyacrylamide Gel for Well Plugging

Research and performance evaluation of modified nano‐silica gel plugging agent

Contact Info

Product

Resources

About

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process