Use of Electric Downhole Heaters to Improve Production and Recovery of Heavy, Viscous Oil in California and Venezuela

Ojeda, Samuel S.; Parman, David G.

doi:10.2118/167347-ms

Cited by 11 publications

(2 citation statements)

References 3 publications

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“…Some researches have shown laboratory or field experimental results which thermal-based induction operation can reduce viscosity (Ojeda and Parman, 2013), reduce heavy oil density (Naser et al, 2015) and alter wettability (Weinbrandt et al, 1975;Permadi et al, 2016). Decreased viscosity influences the mobility ratio to increase which means oil will easily flow (See Eq.…”

Section: Downhole Heatingmentioning

confidence: 99%

Well and Inflow Performance Relationship for Heavy Oil Reservoir under Heating Treatment

Hakiki

Aditya

Ulitha

et al. 2017

SPE/IATMI Asia Pacific Oil &Amp; Gas Conference and Exhibition

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Well and Inflow Performance Relationship, termed TPR and IPR, respectively have been the unfailing methods to predict well performance. It is further to determine the schemes on optimising production. The main intention of the study is to explore TPR and IPR under heating treatment for heavy oil well. Klamono is a mature field which mostly has depleted wells, it produces heavy oil within 18.5 o API (>0.95 g/cc oil density), and therefore, artificial lifting method is necessary. Sucker Road Pump (SRP) and Electrical Submersible Pump (ESP) are the most deployed artificial lifting method in this reservoir. To boost the heavy oil production, the application of Electric Downhole Heater (EDH) in Well KLO-X1 is being studied. Whole Klamono's production is more than 100,000 blpd within 97-99% water cut. By installing EDH, oil viscosity is decreased hence oil mobility ratio will play a role to decrease water cut. EDH is installed together with the tubing joint to simplify its application in the wellbore. The study shows that EDH application can elevate fluid (mixed oil and brine) temperature. Oil viscosity confirms a reduction from 68 to 46 cP. The gross well production is up to 12.2 bopd due optimising its outflow performance and reducing 97.5 to 96.9% water cut. The field data gives an incremental of 4.9 bopd. The computational results only show an attainment of net oil production up to 8.3 bopd (2 bopd incremental). The EDH works to lessen both density and viscosity as we hypothesised for the mechanism of thermally induced oil production improvement. The evaluation study on its economics aspect exhibits good result that is 1.4 USD/bbl additional profit margin according to field data despite the challenging annual rig rent cost. Following the field data, the expected net income through analytical model revealed that this project is financially promising.

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Section: Downhole Heatingmentioning

confidence: 99%

Well and Inflow Performance Relationship for Heavy Oil Reservoir under Heating Treatment

Hakiki

Aditya

Ulitha

et al. 2017

SPE/IATMI Asia Pacific Oil &Amp; Gas Conference and Exhibition

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“…Downhole electric heating has been both contemplated ( [2], [3]) and experimented with ([4], [5], [6], [7]) intermittently for many INTRODUCTION 1.…”

Section: Introductionmentioning

confidence: 99%

Downhole electric heating of heavy-oil wells

Karanikas¹,

Pastor²,

Penny

2020

CT&F Cienc. Tecnol. Futuro

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Downhole electric heating has historically been unreliable or limited to short, often vertical, well sections. Technology improvements over the past several years now allow for reliable, long length, relatively high-powered, downhole electric heating suitable for extended-reach horizontal wells. The application of this downhole electric heating technology in a horizontal cold-producing heavy oil well in Alberta, Canada is presented in this paper. The field case demonstrates the benefits and efficacy of applying downhole electric heating, especially if it is applied early in the production life of the well. Early production data showed 4X-6X higher oil rates from the heated well than from a cold-producing benchmark well in the same reservoir. In fact, after a few weeks of operation, it was no longer possible to operate the benchmark well in pure cold-production mode as it watered out, whereas the heated well has been producing for twenty (20) months without any increase in water rate. The energy ratio, defined as the heating value of the incremental produced oil to the injected heat, is over 20.0, resulting in a carbon-dioxide footprint of less than 40 kgCO2/bbl, which is lower than the greenhouse gas intensity of the average crude oil consumed in the US. A numerical simulation model that includes reactions that account for the foamy nature of the produced oil and the downhole injection of heat, has been developed and calibrated against field data. The model can be used to prescribe the range of optimal reservoir and fluid properties to select the most promising targets (fields, wells) for downhole electric heating as a production optimization method. The same model can also be used during the execution of the project to explore optimal operating conditions and operating procedures. Downhole electric heating in long horizontal wells is now a commercially available technology that can be reliably applied as a production optimization recovery scheme in heavy oil reservoirs. Understanding the optimum reservoir conditions where the application of downhole electric heating maximizes economic benefits will assist in identifying areas of opportunity to meaningfully increase reserves and production in heavy oil reservoirs around the world.

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Pyrolysis of Oil Shale Based on Electromagnetic Heating Technology – A Review

Wang

Liu

et al. 2023

Chem Technol Fuels Oils

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Use of Electric Downhole Heaters to Improve Production and Recovery of Heavy, Viscous Oil in California and Venezuela

Cited by 11 publications

References 3 publications

Well and Inflow Performance Relationship for Heavy Oil Reservoir under Heating Treatment

Well and Inflow Performance Relationship for Heavy Oil Reservoir under Heating Treatment

Downhole electric heating of heavy-oil wells

Pyrolysis of Oil Shale Based on Electromagnetic Heating Technology – A Review

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