Evaluation of synthesized polymeric additives as paraffin inhibitors for wax dissolution in the petroleum reservoir rock

Mandal, Arnab; Mahto, Vikas; Purohit, Subodh; Nihalani, M. C.

doi:10.1016/j.petrol.2019.02.062

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…The precipitation of paraffins during oil production is a widespread phenomenon that petroleum engineers struggle with. In addition to being precipitated inside the surface pipelines [1] and well tubing [2,3], paraffins and asphaltenes are also precipitated in the reservoir as a result of both a decrease in reservoir temperature due to cold water flooding [4] and a reservoir pressure drop [5]. Among the entire reservoir, the highest intensity of paraffin precipitation due to changes in reservoir pressure is observed near production wells, where there is a significant drop in reservoir pressure [6] caused by well performance.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ultrasonic Alternating Loads on Restoration of Permeability of Sedimentary Rocks during Crude Paraffinic Oil Flow

Riabokon,

Gladkikh,

Turbakov

et al. 2023

Applied Sciences

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This paper presents the results of experimental studies on the filtration of reservoir fluid through the rocks under the influence of nonlinear loads. A laboratory rig is assembled that allows for modeling the flow of fluid from the reservoir into the well during the propagation of elastic waves from the well. It is shown that depending on the permeability of the rock matrix as well as on the concentration of paraffins and asphaltenes in crude oil, the effect of the nonlinear load is different. Three types of sandstone are studied: low, medium, and high permeability. The greatest influence of nonlinear loads is observed in high-permeability sandstone. The effect manifests itself in fully unblocking the pore space from paraffins and asphaltenes accumulated in pore throats and restoring the oil permeability to its original value. In the case of medium-permeability sandstone subjected to nonlinear loads, blocking of the pore space is slow. In the case of low-permeability sandstone, the impact of nonlinear loads does not have a significant effect. When studying water filtration in the presence of residual oil saturation, the effect of nonlinear loads is observed as a mobilization of additional oil not previously involved in the filtration process, which also leads to an increase in the water permeability of the rock.

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Section: Introductionmentioning

confidence: 99%

The Effect of Ultrasonic Alternating Loads on Restoration of Permeability of Sedimentary Rocks during Crude Paraffinic Oil Flow

Riabokon,

Gladkikh,

Turbakov

et al. 2023

Applied Sciences

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“…석출된 파 라핀 결정은 분자확산(molecular diffusion) 전단 응력, 브 라운 확산, 중력 침전과 같은 메커니즘에 의해 생산시스템 의 각 구성 요소에 침전된다. 파라핀 침전을 억제하기 위한 다양한 연구가 진행되고 있음에도 (Mandal et al, 2019) (Bern et al, 1980;Burger et al, 1981). 왁스 침전은 왁스 젤 형성(wax gel formation) 후, 침전된 왁 스 젤이 경화(aging)되는 두 단계를 거쳐 발생한다 (Singh et al, 2001).…”

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Parametric Study on the Determinants Affecting Paraffin Deposition in Producing Oil Field Facilities

Lee¹,

Kim²,

Jung³

et al. 2020

ksmer

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In this study, possible relationships between various facility-based factors and paraffin deposition in oil fields are suggested. Paraffin deposition commonly occurs during production and is determined by the environmental and operating conditions. The relevance of changes in annual temperature with burial depth of pipeline was examined and a parametric study was performed with the physical effects of flow patterns generated by artificial lift being evaluated utilizing Computational Fluid Dynamics(CFD) simulation. Paraffin was difficult to deposit on the surface of the rod, owing to the swirling flow generated around the rod in the Progressing Cavity Pump(PCP) system. In addition, a decrease in paraffin deposition was seen on the tubing surface, with the viscous sub-layer thickness determined by the wall shear stress depending upon the inlet velocity. When estimating paraffin deposition in an oil field, it is expected that more accurate evaluations will be possible if the suggested factors are taken into consideration.

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Acoustic vibration restoration of rock permeability while crude oil filtration containing paraffins

Riabokon,

Gladkikh,

Turbakov

et al. 2024

Geoenergy Science and Engineering

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Evaluation of synthesized polymeric additives as paraffin inhibitors for wax dissolution in the petroleum reservoir rock

Cited by 7 publications

References 5 publications

The Effect of Ultrasonic Alternating Loads on Restoration of Permeability of Sedimentary Rocks during Crude Paraffinic Oil Flow

The Effect of Ultrasonic Alternating Loads on Restoration of Permeability of Sedimentary Rocks during Crude Paraffinic Oil Flow

Parametric Study on the Determinants Affecting Paraffin Deposition in Producing Oil Field Facilities

Acoustic vibration restoration of rock permeability while crude oil filtration containing paraffins

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