A novel strengthened dispersed particle gel for enhanced oil recovery application

Dai, Caili; Chen, Wenxia; You, Qing; Wang, Hong; Yang, Zhe; He, Long; Jiao, Baolei; Wu, Yining

doi:10.1016/j.jiec.2016.07.024

Cited by 72 publications

(40 citation statements)

References 25 publications

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“…Single component PPGs, including dispersed particle gel, in the sizes of nano-to milli-meters provided an alternative option to circumvent water dilution and mechanical vulnerability. [5][6][7] Furthermore, the ease in injection using produced water and elastic, deformable characteristics rendered PPGs penetrate to the formation of far wellbore compared to conventional in-situ gels. Field applications in China have demonstrated that millimeter-sized PPGs can significantly reduce the permeability of fractures containing oil reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Mechanically robust re-crosslinkable polymeric hydrogels for water management of void space conduits containing reservoirs

Wang

Long

Ding

et al. 2017

Chemical Engineering Journal

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A unique preformed particle gel with re-crosslinkable ability to reform bulk gel for chemical enhanced oil recovery of void space conduits containing reservoir is described herein. The formation of the bulk gel was achieved by reversible ionic crosslinks of the preformed particle gels as induced by brine under reservoir conditions. The re-crosslinked hydrogel with ionic features showed rubber-like mechanical behaviors, a critical parameter of the particle gels to increase plugging efficiency. The re-crosslinking ability of the preformed particle gels under different salinity could be controlled by tuning the ionic interactions within the hydrogel. In addition, the long-term thermal stability of the re-crosslinked bulk gel has been demonstrated. Furthermore, the re-crosslinked bulk gels could significantly reduce permeability of large fractures as demonstrated by core flooding experiments compared with traditional preformed particle gels. The re-crosslinkable bulk gel with robust mechanical properties could offer the candidate to block void space conduits containing reservoirs for enhanced oil recovery.

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Section: Introductionmentioning

confidence: 99%

Mechanically robust re-crosslinkable polymeric hydrogels for water management of void space conduits containing reservoirs

Wang

Long

Ding

et al. 2017

Chemical Engineering Journal

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“…Lab sand pack core flooding experiments on samples with a permeability ranging from 0.47 µm 2 to 8.89 µm 2 showed that DPG has good injectivity, which makes it an effective in-depth plugging agent. In the article [49], a novel strengthened dispersed particle gel (SDPG) is presented. Silica nanoparticles (SiO2) were used as reinforced material to improve resistance to the high temperatures and high-salt content in the reservoir water.…”

Section: Dispersed Particle Gel (Dpg)mentioning

confidence: 99%

“…The SDPG obtained demonstrated their stability at 110 °C and a total salinity of about 213 g/L [50]. Several research describe the effective combination of DPG with surfactants [45,49,50]. In the article [49], a novel strengthened dispersed particle gel (SDPG) is presented.…”

Section: Dispersed Particle Gel (Dpg)mentioning

confidence: 99%

Review of Microgels for Enhanced Oil Recovery: Properties and Cases of Application

Ketova

Burin

Galkin

et al. 2022

Gels

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In todays’ world, there is an increasing number of mature oil fields every year, a phenomenon that is leading to the development of more elegant enhanced oil recovery (EOR) technologies that are potentially effective for reservoir profile modification. The technology of conformance control using crosslinked microgels is one the newest trends that is gaining momentum every year. This is due to the simplicity of the treatment process and its management, as well as the guaranteed effect in the case of the correct well candidate selection. We identified the following varieties of microgels: microspheres, thermo- and pH-responsible microgels, thin fracture of preformed particle gels, colloidal dispersed gels. In this publication, we try to combine the available chemical aspects of microgel production with the practical features of their application at oil production facilities. The purpose of this publication is to gather available information about microgels (synthesis method, monomers) and to explore world experience in microgel application for enhanced oil recovery. This article will be of great benefit to specialists engaged in polymer technologies at the initial stage of microgel development.

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“… 20 , 21 Similarly, another widespread example of EOR is polymer gel 22 , 23 that can be used as a plugging agent in high-permeability zones to transfer the displacing fluid toward the low-permeability zone, thus displacing the existing reservoir and increasing the oil production. 24 − 26 …”

Section: Introductionmentioning

confidence: 99%

Development and Performance Evaluation of a High-Temperature Profile Control System

Wang

Zhang

et al. 2020

ACS Omega

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In the late stage of the steam flooding development of heavy oil reservoirs, the contradiction between layers is prominent, which makes the development of the reservoir difficult. To obtain a profile control agent suitable for steam flooding in heavy oil reservoirs, the modification technology was used to improve the temperature resistance of the traditional NH-1 main agent, as the conjugation effect may enhance the stability of the molecular structure. Thus, we obtained the modified NH-1 main agent, which was used in combination with graphite particles. To explore the oil displacement effect of the profile control system, the single-variable method was used to optimize the profile control system and evaluate its performance. Moreover, the multimedium steam flooding experiment was carried out to further verify the profile control capability of the profile control system. The results show that the formula of the graphite particle–gel compounding system is 0.03% coagulant BK-A05 + 2.2% cross-linking agent I + 1.8% cross-linking agent II + 6% modified NH-1 main agent (prepared by reacting NH-1 main agent with 65% concentrated nitric acid at a solid–liquid ratio of 1:6) + 0.7% graphite particles (10 000 meshes) + 0.3% suspending agent CMC. The gel viscosity of the profile control system can reach 2 × 10 6 mPa·s, the gel temperature range is wide (160–280 °C), and the temperature resistance is 300 °C. The profile control system has good injection performance, plugging effect, washing resistance, and thermal stability and is significantly better than the gel system alone. The experiment results also show that the profile control system has a strong profile control capability and expands the swept volume. The crude oil recovery increases by 8.89%, and it can be effectively applied to the profile control operation of heavy oil multimedium steam flooding.

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A novel strengthened dispersed particle gel for enhanced oil recovery application

Cited by 72 publications

References 25 publications

Mechanically robust re-crosslinkable polymeric hydrogels for water management of void space conduits containing reservoirs

Mechanically robust re-crosslinkable polymeric hydrogels for water management of void space conduits containing reservoirs

Review of Microgels for Enhanced Oil Recovery: Properties and Cases of Application

Development and Performance Evaluation of a High-Temperature Profile Control System

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