Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 35 checked references that resolve
resolves10.2118/96-04-02Downhole Emulsification: Viscosity Reduction Increases Production
resolves10.2118/35366-PAAsphaltenes and Crude Oil Wetting—The Effect of Oil Composition
resolves10.2118/07-09-TN2Exothermicity Characteristics of Wolf Lake Heavy Oil, Athabasca Tar Sand and Clair Medium Heavy Oil
resolves10.1038/nature02134Biological activity in the deep subsurface and the origin of heavy oil
resolves10.2516/ogst:2004036Crude Oil Emulsion Properties and Their Application to Heavy Oil Transportation
resolves10.2118/28970-PAEvolution of Wetting Alteration by Adsorption From Crude Oil
resolves10.1002/jhrc.1240170403Separation of fuels, heavy fractions, and crude oils into compound classes: A review
resolves10.2118/09-03-42Heavy Oil Waterflooding: Effects of Flow Rate and Oil Viscosity
resolves10.2516/ogst:2004031Pipeline Transportation of Heavy Oils, a Strategic, Economic and Technological Challenge
resolves10.1016/j.cherd.2010.11.020Physico-chemical properties of heavy crude oil-in-water emulsions stabilized by mixtures of ionic and non-ionic ethoxylated nonylphenol surfactants and medium chain alcohols
resolves10.1016/j.petrol.2005.11.005Contact angle measurements and wetting behavior of inner surfaces of pipelines exposed to heavy crude oil and water
resolves10.1039/b918960bA review of novel techniques for heavy oil and bitumen extraction and upgrading
resolves10.1080/10916466.2010.509067The Evaluation of Variable-Injection Rate Waterflooding, Immiscible CO<sub>2</sub>Flooding, and Water-alternating-CO<sub>2</sub>Injection for Heavy Oil Recovery
The 58 references without a DOI — listed, not checked
no DOI — not checkedApplication of high performance liquid chromatography for hydrocarbon group type analysis of crude oils
no DOI — not checkedref5
no DOI — not checkedA simple model for pressure drop in core-annular flow
no DOI — not checkedMining heat
no DOI — not checkedref11
no DOI — not checkedref14
no DOI — not checkedref15
no DOI — not checkedThe Role of Alkaline Chemicals in Oil Displacement Mechanisms
no DOI — not checkedref17
no DOI — not checkedHere's how waxy Indian crude is prepared for pipeline transit
no DOI — not checkedref20
no DOI — not checkedref21
no DOI — not checkedref22
no DOI — not checkedref23
no DOI — not checkedref24
no DOI — not checkedHeavy oil - evermore mobile
no DOI — not checkedref27
no DOI — not checkedOil Recovery with Surfactants: History and a Current Appraisal
no DOI — not checkedThai-new air injection technology for heavy oil recovery and in situ upgrading
no DOI — not checkedref31
no DOI — not checkedref32
no DOI — not checkedEffect of oil composition on miscible type displacement by carbon dioxide
no DOI — not checkedref36
no DOI — not checkedref41
no DOI — not checkedref43
no DOI — not checkedref44
no DOI — not checkedref46
no DOI — not checkedEmulsification and Demulsification in Oil Recovery
no DOI — not checkedCrude Oil Asphaltenes: Colloidal Aspects
no DOI — not checkedref53
no DOI — not checkedref54
no DOI — not checkedref56
no DOI — not checkedref57
no DOI — not checkedref58
no DOI — not checkedref59
no DOI — not checkedref60
no DOI — not checkedref61
no DOI — not checkedClean Gasoline via VRDS/RFCC
no DOI — not checkedref64
no DOI — not checkedPipeline Emulsion Transport for Heavy Oils
no DOI — not checkedref66
no DOI — not checkedref67
no DOI — not checkedHeavy Hydrocarbon Emulsions
no DOI — not checkedref72
no DOI — not checkedref74
no DOI — not checkedref75
no DOI — not checkedref76
no DOI — not checkedref77
no DOI — not checkedref78
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no DOI — not checkedref83
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no DOI — not checkedref88
no DOI — not checkedref89
no DOI — not checkedref91
no DOI — not checkedDetermination and Prediction of CO2 Minimum Miscibility Pressures
no DOI — not checkedref93
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