Application of Horizontal Well in Heterogeneity Gas Condensate Reservoir

Muladi, A.; Pinczewski, W.V.

doi:10.2118/54351-ms

Cited by 17 publications

(5 citation statements)

References 35 publications

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“…• re-perforating the wellbore, and solvent injection (Al-Anazi et al 2005;Liangui et al 2000;Alzate et al 2006) • dry gas injection (condensate re-vaporization) (Smith and Yarborough 1968;Shi et al 2001) • water injection, nitrogen injection to drive condensate back (Siregar et al 1992) • increasing reservoir contact using horizontal well (Muladi and Pinczewski 1999) • hydraulic fracturing, and near wellbore wettability alteration are additional examples to mention Apart from the wettability alteration method, other methods are not permanent solutions and the condensate bank will re-form (Li and Firoozabadi 2000a). The latter authors (2000b) studied the gas condensate system using a phenomenological network model and investigated the effects of interfacial tension, gravity, flow rate, contact angle hysteresis and network size on the critical condensate saturation.…”

Section: Introductionmentioning

confidence: 99%

Wettability Alteration of Reservoir Rocks from Liquid Wetting to Gas Wetting Using Nanofluid

et al. 2015

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Well productivity in gas condensate reservoirs is reduced by condensate banking when the bottom hole flowing pressure drops below the dew point pressure. Among the several methods which have been proposed for condensate removal, wettability alteration of reservoir rock to intermediate gas wetting in the near wellbore region appears to be one of the most promising techniques. In this work, we report use of a nanofluid to change the wettability of the carbonate and sandstone rocks to intermediate gas wetting. Application of nanofluid in the wettability alteration of carbonate and sandstone rocks to gas wetting has not been reported previously and is still an ongoing subject. Static and dynamic contact angle measurements, along with imbibition tests, have been performed to investigate the wettability of carbonate and sandstone rocks in presence of nanofluid. It was found that the nanofluid used in this work can considerably change the wettability of both surfaces to preferentially gas wetting in just one day of ageing time. We also report the effect of initial oil saturation and ageing time on the nanofluid capability for wettability change. Initial oil saturation reduces the impact of the nanofluid on wettability change, and hence, a pre-treatment before using nanofluid is necessary. In addition to these small slab-scale experiments, applicability of nanofluid in wettability alteration of sandstone rocks to gas wetting is also investigated in core scale. The results of core displacement tests confirm the ability of nanofluid to change the rock wettability from liquid wetting to gas wetting in core samples. They also show the effectiveness of chemical treatment in subsurface conditions.

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Section: Introductionmentioning

confidence: 99%

Wettability Alteration of Reservoir Rocks from Liquid Wetting to Gas Wetting Using Nanofluid

et al. 2015

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“…According to this method, many scholars have studied the productivity of vertical wells in condensate gas reservoirs [6,8,22]. Some scholars have further established the four-region model [23][24][25][26][27], which takes into account the capillary effect and is the most comprehensive method; however, it increases the difficulty of modeling.…”

Section: Afidick Et Al Conducted a Constant Component Expansion (Cce)...mentioning

confidence: 99%

Calculation Method of Three-Phase Productivity of Horizontal Well in Water-Bearing Condensate Gas Reservoir

Zhang,

Chen,

et al. 2024

Energies

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Condensate gas reservoirs are a special kind of reservoir because of the presence of multiphase flow in their production. The accurate calculation of the multiphase flow productivity in horizontal wells is of great significance for reservoir development. In this study, the total pseudopressure and the equivalent total flow are defined to solve the multiphase nonlinear problem in the oil–gas–water three-phase control flow equation, and to establish a three-phase productivity equation considering the non-Darcy effect. It provides a solution for the three-phase productivity calculation of horizontal wells in water-bearing condensate gas reservoirs. The example verification and error analysis of three horizontal wells, except for the gas production error of Well Y3 and the average error of the production data of other gas wells, is below 4%. The fitting effect of Well Y2 is better than that of the other two horizontal wells, and the average error of the oil, gas, and water phases is below 3%. This method provides a practical and simple engineering tool for the analysis of the productivity of condensate gas reservoirs considering multiphase flow.

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“…Kumar et al (2006a, b) found that the relative permeability to gas was improved and the residual oil saturation was reduced after treating the core samples with wettability-alteration chemicals. Wettability-alteration chemicals can reduce the high velocity (turbulent) coefficient as well as enhance the relative permeability to gas (Noh and Firoozabadi 2006). Also, wettability-alteration chemicals were found to be effective in modifying the wettability of rock surfaces in propped fractures, hence increasing the gas-flow rate through improving the fracture conductivity (Bang 2007;Bang et al 2008).…”

Section: Use Of Fluorosurfactants and -Polymers For Wettability Altermentioning

confidence: 99%

Mitigation of the Effects of Condensate Banking: A Critical Review

Sayed

Al-Muntasheri

2016

SPE Production &Amp; Operations

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With production from gas/condensate reservoirs, the flowing bottomhole pressure of the production well decreases. When the flowing bottomhole pressure decreases below the dewpoint, condensate accumulates near the wellbore region and forms a condensate bank. This results in a loss of productivity of both gas and condensate, which becomes more serious in intermediate-and low-permeability gas/condensate reservoirs, where the condensate bank reduces both the gas permeability and the well productivity.Several techniques have been used to mitigate this problem. These methods include:• Use of solvents and wettability-alteration chemicals to reduce the impact of condensate blockage • Gas cycling and injection of nitrogen and supercritical carbon dioxide as pressure-maintenance methods • Drilling horizontal wells, hydraulic fracturing, and acidizing to improve the well productivity Gas cycling aims to keep the reservoir pressure greater than the dewpoint pressure to reduce the condensation phenomena. The limited volumes of gas that can be recycled in the reservoir can hinder the application of this method. For an ideal gas-cycling process, the volume of the gas injected into the reservoir will be larger than the total gas that can be produced from such a reservoir. Other approaches are the drilling of horizontal wells and hydraulic fracturing, during which the pressure drop around the wellbore region is lowered to allow for a longer production time, with only single-phase gas flow to the wellbore. These approaches are costly because they require drilling rigs. Another technique is the use of solvents, which shows good treatment outcomes, but the durability is a questionable issue in these treatments. Moreover, wettability alteration needs to be approached very carefully so as not to cause permanent damage to the reservoir. The use of fluorinated polymers and surfactants dissolved in alcohol-based solvents for wettability-alteration treatments was reported in many studies.Each method has its own advantages and disadvantages, and can be applied under certain conditions. This paper presents all of these methods, along with their advantages and disadvantages and description of some of their field applications and case studies.

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Application of Horizontal Well in Heterogeneity Gas Condensate Reservoir

Cited by 17 publications

References 35 publications

Wettability Alteration of Reservoir Rocks from Liquid Wetting to Gas Wetting Using Nanofluid

Wettability Alteration of Reservoir Rocks from Liquid Wetting to Gas Wetting Using Nanofluid

Calculation Method of Three-Phase Productivity of Horizontal Well in Water-Bearing Condensate Gas Reservoir

Mitigation of the Effects of Condensate Banking: A Critical Review

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