Applied Technologies and Prospects of Conformance Control Treatments in China

Liu, Yuzhang; Bai, Baojun; Wang, Yefei

doi:10.2516/ogst/2009057

Cited by 127 publications

(104 citation statements)

References 45 publications

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“…The selection of a PPG primarily considers its compatibility with the produced water, thermo-stability at the reservoir temperature, swelling ratio, strength after being swollen in injection water and particle size (Bai, 2001;Liu, 2010). Six samples were evaluated to find the best PPG candidate for the pilot.…”

Section: Ppg Selectionmentioning

confidence: 99%

“…BP and Chevron used submicro-sized particle gel for more than 10 well treatments (Cheung et al, 2007). Millimeter-sized polymer grain PPG were applied in approximately 2 000 wells in China to reduce fluid channels in water floods and polymer floods (Liu et al, 2010). One advantage of PPG treatments is that the PPG sizes and strengths can be adjusted during particle injection according to the monitored injection pressure; thus, the right size and strength of particles that best fit the practical mature reservoir can be injected.…”

Section: Introductionmentioning

confidence: 99%

“…To maintain reservoir pressure and meet the nation's energy consumption requirements, these reservoirs were developed using water flooding after undergoing a few years of primary recovery. Many of them have been hydraulically fractured, intentionally or unintentionally, or have been channeled due to mineral dissolution and production during water flooding (Liu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Injecting Large Volumes of Preformed Particle Gel for Water Conformance Control

Bai

Wei

Liu

2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Injection d'importants volumes de gel de type GPP (gel à particules préformées) pour le contrôle du balayage en injection d'eau dans les réservoirs matures-Le présent article décrit les traitements à base de gel à particules préformées (GPP) pour la dérivation de fluide en profondeur dans quatre puits d'injection situés dans la partie nord du gisement de Lamandian, dans le champs pétrolifère de Daqing en Chine ; il s'agit d'un gisement de grès présentant des couches productrices épaisses et hétérogènes. Quarante-six producteurs ont été raccordés aux quatre injecteurs traités avec une proportion d'eau moyenne de 95,4 % avant les traitements à base de GPP. Un important volume (plus de 1000 m 3 ) de suspension de GPP présentant des concentrations de 1 900 à 2 500 mg/L et des tailles de particule de 0,06 à 3,0 mm a été injecté dans chaque puits, chaque injection durant environ quatre mois. Les volumes d'injection de suspension de GPP vont de 11 458 à 17 625 m 3 par puits pour un total de 56 269 m 3 (295 680 lb, soit environ 134 118 kg, de matière sèche de GPP) pour les quatre puits, ce qui indique l'existence de zones à haute perméabilité (K) ou de fractures dans la formation. Lors de l'injection de GPP, des données en temps réel, y compris la pression d'injection, le taux d'injection et les tailles de particule, ont été contrôlées pour ajuster notre méthode de traitement aux conditions de ce réservoir mature. Cet article présente des informations détaillées sur les traitements des quatre puits, y compris les critères de sélection des puits, la méthode de traitement, les résultats du contrôle en temps réel lors de l'injection de GPP et les résultats des traitements.

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Section: Ppg Selectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Injecting Large Volumes of Preformed Particle Gel for Water Conformance Control

Bai

Wei

Liu

2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Excessive water production has caused major problems due to decreased oil production and increased costs of lifting, separating and disposing large amounts of produced water, which has attracted more concerns on water control technology. Conformance control that generally refers to using chemical or mechanical methods to reduce undesired water production has been proved as an effective water control technology, which can improve sweep efficiency and thus result in an increase in ultimate oil recovery (Liu et al 2010). Chemical-based conformance control has been successfully used to improve oil recovery of mature water flooding reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Development and evaluation of organic/inorganic combined gel for conformance control in high temperature and high salinity reservoirs

Wang

Sun

et al. 2014

J Petrol Explor Prod Technol

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Polymer gels have been successfully applied to control undesired water production for many years, however, due to poor long-term thermal stability and salt tolerance, conventional polymer gels present some limitations for application in high temperature and high salinity reservoirs. In this paper, an organic/inorganic combined gel composed of polymer with low degree of hydrolysis, phenol formaldehyde resin and inorganic silicate was proposed and developed. The effects of concentration, temperature on gelation time were studied. Long-term thermal stability, salt tolerance and permeability reduction ability were investigated. Results showed that based on proper gelation time and economical cost, the formulation of the organic/inorganic combined gel was optimized. The gelation time decreased from 54.0 to 15.5 h with increasing temperature from 100 to 130°C. After aging for 60 days in simulated formation brine with high total dissolved solids (TDS: 20 % NaCl ? 2.5 % CaCl 2 ) at 130°C, compared with polymer gel, the organic/inorganic combined gel had better long-term thermal stability and salt tolerance. Sandpack flow experimental results showed that for the organic/inorganic combined gel composed of 0.3 wt% polymer, 4.0 wt% resin and 3.0 wt% inorganic silicate, after aging for 60 days at 130°C, the combined gel showed approximately 85 % permeability reduction. Therefore, these results indicate that the combined gel studied here can be a good candidate for controlling water production in high temperature and high salinity reservoirs.

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“…e polymer gels block or reduce the permeability in high permeability channels and divert the injected water through the low permeability sections, which were not �ooded or swept earlier, leading to improvement in oil recovery. is technique is known as pro�le modi�cation or permeability modi�cation technique and the proper application of this technique is essential for the success of water �ooding projects in the oil �elds [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

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

Yadav

Mahto

2013

Journal of Petroleum Engineering

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e cross-linked polymer gel systems are being used increasingly to redirect or modify reservoir �uid movement in the vicinity of injection wells for the purpose of permeability/pro�le modi�cation job in the oil �eld due to their high temperature stability and capability to provide rigid gel having high mechanical strength. In this study, a partially hydrolyzed polyacrylamide-hexaminehydroquinonegel is used for the development of polymer gel system. e experimental investigation demonstrates that the gelation time varies with polymer and crosslinker concentration and the temperature. e 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. e 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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Applied Technologies and Prospects of Conformance Control Treatments in China

Cited by 127 publications

References 45 publications

Injecting Large Volumes of Preformed Particle Gel for Water Conformance Control

Injecting Large Volumes of Preformed Particle Gel for Water Conformance Control

Development and evaluation of organic/inorganic combined gel for conformance control in high temperature and high salinity reservoirs

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

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