ORALS

SESSION: EnergyTuePM1-R11	8th Intl. Symp. on Sustainable Energy Production: Fossil; Renewables; Nuclear; Waste handling , processing, & storage for all energy production technologies; Energy conservation
Tue. 28 Nov. 2023 / Room: DiscoRoom
Session Chairs: Manfred Mauntz; Harold Dodds; Session Monitor: TBA

15:20: [EnergyTuePM108] OL Keynote
GAS LIFT AND ITS EFFECTS ON OIL FIELD PRODUCTION
Laura Garzon¹ ; ¹Universidade Federal do Pará (UFPA), Belem, Brazil;
Paper Id: 38 [Abstract]

At the beginning of the production of an oil field, the energy may be high enough to be able of continuing the production only with natural motive force, so at this stage, there is no need for artificial lift. After several years of oil production, the oil reservoir pressure will be depleted, so in this stage, an artificial driving force is needed to continue production. Gas lifting is one of the most effective and cheapest methods of artificial lift techniques that are used to reduce the oil density by mixing the oil with the gas which is injected at the lower part of the production string. This artificial gas lift method uses an external source of high-pressure gas to supplement the formation gas to lift the wellbore fluids. In the gas lift operation, the injection and production wells will be unique, which means that in a single well, the gas will be injected into the oil zone through the tubing, while the oil will be produced through the annulus. This article discusses the gas lift method and its effects on oil production from an oil well.

SESSION: EnergyTuePM3-R11	8th Intl. Symp. on Sustainable Energy Production: Fossil; Renewables; Nuclear; Waste handling , processing, & storage for all energy production technologies; Energy conservation
Tue. 28 Nov. 2023 / Room: DiscoRoom
Session Chairs: Harold Dodds; Session Monitor: TBA

18:20: [EnergyTuePM314] OL
METHODS FOR PREDICTING PRODUCED SAND OF AN OIL WELL
Laura Garzon¹ ; ¹Universidade Federal do Pará (UFPA), Belem, Brazil;
Paper Id: 37 [Abstract]

To initiate oil production from an oil well, a connecting channel is required between the reservoir formations and the wellbore. In cased hole completions, this connecting channel is provided by perforation, and in uncased hole completions, this connecting channel is provided by an open hole through which oil can flow from the oil reservoir formations to the oil well bore. If these formations are permeable with high permeability, oil can flow easily through the sand into production wells. These produced fluids may carry entrained therein sand, particularly when the subsurface formation is unconsolidated. Nevertheless, produced sand is undesirable for many reasons; when it reaches the surface, sand can damage equipment such as valves, pipelines, pumps and separators and for that must be removed from the produced fluids at the surface. Further, the produced sand may partially or completely clog the well, substantially lead to poor performance in wells and, ultimately, inhibiting production, thereby making necessary an expensive work-over. In addition, the sand flowing from the subsurface formation may leave therein a cavity which may result in caving of the formation and collapse of the casing. One of the challenges faced by oil and gas companies in the wells workover and production operations is the produced sand associated with oil produced. The ability to predict the production of sand for oil wells of a reservoir with the aim of deciding to use different methods of its control is considered a fundamental issue. Therefore, analyzing and examining sand production conditions and choosing the optimal drilling route before drilling a well are very relevant aspects that are not receiving enough attention. Also, in conditions where sand production is unavoidable, it is imperative to choose the right sand control method and wellbore design. For instance, a reliable and adequate prediction of whether the well is sanded or not and the decision whether or not to install packers inside the wellbore is highly important. If the phenomenon of sand production occurs and packers are not installed to prevent sand production, problems will increase along with sand production. In general, the aim of this paper is to review different methods of predicting sand production such as laboratory, field, theoretical and experimental methods that have been used in different parts of the world.

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