How To Apply a Blocking Gel System for Bullhead Selective Water Shutoff: From 
Laboratory to Field

Stavland, Arne; Andersen, Knut H.; Sandoey, Bernt; Tjomsland, Tore; Mebratu, Amare

doi:10.2523/99729-ms

Cited by 12 publications

(7 citation statements)

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“…Therefore, water shut-off treatment was studied for several decades (Terry et al, 1981;Albonico et al, 1994;Surguchev and Stavland, 1998;Portwood, 1999;Chauveteau et al, 2000;Feng et al, 2003;Stavland et al, 2006;Demir et al, 2008). There are a number of treatment methods to date, which can be divided into two groups: (1) mechanical methods (cement, drilling horizontal, multi-lateral wells, down hole separation equipment) and…”

Section: Introductionmentioning

confidence: 99%

Gelation Time Optimization for an HPAM/Chromium Acetate System: The Successful Key of Conformance Control Technology

Nguyen

Bae

et al. 2012

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Gelation of gelant solutions occurs under specific conditions. The gelation time can vary from several minutes to several days, even a few months, depending on parameters, such as temperature, polymer type, polymer concentration, cross-linker concentration, initial pH, salt type, and salt concentration. Therefore, many laboratory experiments were studied to understand the gelation time before the core flooding experiments were carried out. The polyacrylamide polymers and the chromium acetates were mixed to form the gelant solutions. The results suggested the good proportion of polymer to cross-linker for the next core flooding experiments and the effects of gelation time.

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Section: Introductionmentioning

confidence: 99%

Gelation Time Optimization for an HPAM/Chromium Acetate System: The Successful Key of Conformance Control Technology

Nguyen

Bae

et al. 2012

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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“…Emulsions aside, there are a plethora of studies worked on various selective plugging agents such as gels, cement and polymers to control water cut in production wells (Bai and Zhang 2011;Breston 1957;Liu et al 2017;Stavland et al 2006;Wang et al 2003). Among these, although emulsion is not capable as much as the others in permeability reduction of formations, it has its unique distinctions (Seright and Liang 1995).…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation on enhancing water flooding performance using oil-in-water emulsions in an Iranian oil reservoir

Sadati

Sahraei

2019

J Petrol Explor Prod Technol

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Emulsions are extensively prevalent in the oil industry in both advantageous and disadvantageous ways. In the literature, conventional water flooding in high permeability oil reservoirs has confronted with water channeling and poor sweep efficiency. In this paper, the remedial application of O/W emulsions as an EOR method in improving water performance is discussed. To this purpose, a series of flooding experiments were carried out in one of the Iranian oil reservoirs in reservoir condition of 75 C and 2000 psi. Then, visual stability measurements were conducted to inspect the stability characterization of the emulsion. Sodium dodecyl sulfate was applied helping simple dispersion of the gasoil into the water phase, and emulsions with water percentage of 90, 80, 70 and 60 were developed to introduce into the porous media. It was found out from flooding experiments that emulsion injection after conventional water flooding can lead to additional oil recovery (up to 20%). Besides, the emulsion with 80% water cut was determined as the optimum emulsion for injection in this reservoir considering financial aspects. Moreover, results of the stability test revealed that the aqueous phase with one wt% surfactant or higher had formed emulsions which have been stable during a long period of 6 months.

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“…The mechanical methods are known to be most suitable for wellbore related problems but can also be utilized in combination with the chemical water shutoff methods depending on the complexity of the reservoir problem. About seven decades ago, the chemical methods have attracted more industrial acceptability and thus have greater application than the mechanical methods. Polymer gels are among the chemical methods used for water shutoff treatments in the petroleum industry.…”

Section: Introductionmentioning

confidence: 99%

Investigation into the viscoelastic response at various gelation performance, thermal stability and swelling kinetics of fly ash reinforced polymer gels for water control in mature oilfields

Adewunmi

Ismail

Sultan

2016

Asia-Pacific J Chem Eng

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The present crippling crude oil price worldwide demands a new strategy and cost‐effective technology that will promote additional oil recovery in mature oilfields. Herein, crosslinked polyacrylamide (PAM) gels reinforced with coal fly ash (CFA) were investigated for water reduction purpose during enhanced oil recovery. Polyethyleneimine (PEI) is chosen as the crosslinker. Neat PAM/PEI gel and PAM/PEI composite gels filled with various CFA concentrations (0.5 to 2 wt%) were developed and characterized by aging, gravimetric, hybrid rheometer, thermogravimetric analyzer (TGA), scanning electron microscopy (SEM), X‐ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) instruments. Gelation performance of these gels was conducted at 90 °C, and results show that increase in CFA in PAM/PEI gels causes a delay in the gelation time. This indicates that CFA can act as a retarder in polymer gels applied for water control in mature oilfields. Moreover, the PAM/PEI composite gels containing CFA displayed improved viscoelastic properties as compared to the neat PAM/PEI gel at various gelation behaviors that were tested. Additionally, TGA analysis revealed that PAM/PEI gels infused with different CFA amounts possessed high resistance to thermal decomposition. The presence of alumina and silica in high concentrations in CFA induced a strong bond within these polymer gels, which resulted in improved thermal stability. Further, owing to the fact that CFA only absorbed a small amount of water through the hydroxyl and amine groups, its presence decreased the swelling ability of these composite gels. Morphological and structural analysis demonstrated by these gels affirmed the consistency of viscoelastic, thermal and swelling kinetic results. Copyright © 2016 Curtin University of Technology and John Wiley & Sons, Ltd.

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How To Apply a Blocking Gel System for Bullhead Selective Water Shutoff: From Laboratory to Field

Cited by 12 publications

References 0 publications

Gelation Time Optimization for an HPAM/Chromium Acetate System: The Successful Key of Conformance Control Technology

Gelation Time Optimization for an HPAM/Chromium Acetate System: The Successful Key of Conformance Control Technology

An experimental investigation on enhancing water flooding performance using oil-in-water emulsions in an Iranian oil reservoir

Investigation into the viscoelastic response at various gelation performance, thermal stability and swelling kinetics of fly ash reinforced polymer gels for water control in mature oilfields

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