An Improved Model for Estimating Productivity of Horizontal Drain Hole

Fadairo, Adesina; Paul, Anawe; Orodu, O. D.; Oladepo, Adebowale

doi:10.2118/184264-ms

Cited by 9 publications

(6 citation statements)

References 24 publications

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“…As a sequel to advancement in drilling and completion technology, there has been increasing interest in horizontal wells. Production enhancement and economic increment of hydrocarbon recovery have given horizontal wells completion advantages over vertical wells most especially in small and marginal reservoirs [1][2][3][4][5]. However, horizontal well is costlier to drill and complete than vertical well.…”

Section: Introductionmentioning

confidence: 99%

“…However, horizontal well is costlier to drill and complete than vertical well. With current innovation in technology, the petroleum industry has generally moved to horizontal wells, as it is fast becoming the traditional practice [1][2][3][4][5][6][7][8][9][10]. Multilateral wells display the same benefits that horizontal wells also do, as well as they can recover hydrocarbon simultaneously from more than one reservoir; this offers significant increments in well planning and economics [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The outcome of their study was more accurate than other previous experts as it shows the least percentage error derivation of 5% from the actual result obtained from gauge measurement. The recent study by Fadairo et al reveals that all possible pressure restriction terms should be considered to combat the inaccuracy in results obtained using existing models in the literature [1][2][3][17][18][19]. This chapter is an advancement on the Tabatabaei and Ghalambor model [8] by inclusion of pressure restriction due to accumulation in the governing flow equation for horizontal well.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Improved Semi-Analytical Approach for Predicting Horizontal and Multilateral Well Performance

Fadairo¹,

Adeyemi²,

Ogunkunle³

et al. 2020

Oil and Gas Wells

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Field development and economic evaluation of hydrocarbon demand for an accurate model for predicting horizontal well performance as horizontal and multilateral wells have become far more prominent in the industry than vertical wells. Several approaches for modelling horizontal well performance have been studied and reported in the literature. Analytical approach is the easiest with large inaccuracy in the prediction of the horizontal well performance because of inability to apply it in reservoir-wellbore coupling equation. Numerical approach is more reliable for field application than analytical approach. However, it involves iterative nature that requires longer computational times. Semi-analytical approach is simpler and sufficiently exact for field applications if the governing fundamental flow equation is accurately modelled. This study presents a new semi-analytical model for predicting horizontal and multilateral well performance, which includes friction, acceleration and accumulation induced pressure drop along horizontal well length into the governing fundamental flow equations. The outcomes of the proposed model have been validated by field data gotten from gauge rate of 5660stb/d at steady-state condition. The estimated steady flow rate of 5593.9 stb/day obtained from the new approach shows an error of 1.2% which is seen to be more accurate than steady flow rate values obtained by four previous models that exhibited higher percentage errors when compared to gauge reading.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Improved Semi-Analytical Approach for Predicting Horizontal and Multilateral Well Performance

Fadairo¹,

Adeyemi²,

Ogunkunle³

et al. 2020

Oil and Gas Wells

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“…Complex structural wells including horizontal wells and multilateral wells have become a popular alternative for the development of oil and gas fields around the world because of their high flow efficiency due to larger contact area made with the reservoir and lower pressure drawdown at the same liquid volume [1]. As the process of oilfield development enters into the intermediary and later phase, the mixed well patterns of complex structural wells and conventional vertical wells have been widely applied to the implementation of adjustment plans [2].…”

Section: Introductionmentioning

confidence: 99%

Productivity Models of Infill Complex Structural Wells in Mixed Well Patterns

Sun

2019

Processes

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The mathematical models of productivity calculation for complex structural wells mainly focus on the single well or the regular well pattern. Previous research on the seepage theory of complex structural wells and vertical wells in mixed well pattern is greatly insufficient. Accordingly, this article presents a methodology of evaluating the productivity of infill complex structural wells in mixed well patterns. On the basis of the mirror-image method and source–sink theory, two semi-analytical models are established. These models are applied to the productivity prediction of an infill horizontal well inhorizontal-vertical well pattern and an infill multilateral well inmultilateral-vertical well pattern, respectively, in which the interference of other wells, the randomicity of well patterns, and the pressure drawdown along the horizontal laterals are taken into account. The semi-analytical models’ results are consistent with those calculated by the Eclipse reservoir simulator with the relative error of less than 15%. Results indicate that the bottom hole flowing pressure decreases logarithmically while the wellbore flow rate increases monotonically from the toe to the heel of the horizontal well. Due to the pseudo-hemispherical flow at each endpoint and the pseudo-linear flow at the center of the horizontal well, the drainage area at each endpoint is relatively larger than that at the center. The radial inflow at each endpoint of the horizontal segment is considerably greater than that at the center, which presents the U-shape distribution. The proposed methodology enhances and promotes the theory of productivity evaluation for complex structural wells in mixed well patterns.

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“…There are two categories of horizontal wells applications: to solve problems from fluids flow characteristics and problems regarding the reservoir heterogeneities. Both applications can be present on the same system (Adesina et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

<b>The influence of oil well on the water generation from the potiguar basin / Brazil

2018

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The geometry of oil wells can be decisive for the generation of undesirable residues in the oil and gas production. One of these residues is the produced water, which has increased its volume in the oil fields, becoming a great environmental challenge for the fields managers. Therefore, the objective of this research is to analyze the influence of oil wells types in the generation of produced water. The research was developed in 80 onshore oilfields, in production phase, at the Potiguar basin, considering the years 2014, 2015 and 2016. A conceptual model was formulated with three hypotheses, using multivariate regressions. The results indicated an increasing average of 0.5% (2014 and 2015) in the produced water volume, when 1 vertical well was added to the project; and 1.91% (2016) for each directional well introduced in the project. The age of the field was the most influential variable in the research, reaching, in the year 2015, an effect of 13.7% on the produced water generation.A influência dos poços de petróleo na geração de água na bacia potiguar/Brasil RESUMO. A geometria dos poços de petróleo pode ser decisiva quanto à geração de resíduos indesejáveis na produção de petróleo e gás. Um desses resíduos é a água produzida que tem aumentando seu volume nos campos petrolíferos e se tornado um grande desafio ambiental para os gestores desses campos. O objetivo desta pesquisa é analisar a influência dos tipos de poços petrolíferos na geração de água produzida. Esta pesquisa foi desenvolvida em 80 campos de petróleo onshore, em fase de produção, na bacia potiguar, considerando os anos de 2014, 2015 e 2016. Formulou-se um modelo conceitual composto por três hipóteses, utilizando-se das regressões multivariadas. Os resultados apontam para um aumento de 0,5% (2014 e 2015) no volume de água produzida, em média, quando acrescido um poço vertical no projeto e de 1,91% (2016) para cada poço direcional incrementado no projeto. A idade do campo revelou-se a variável de maior influência na pesquisa, alcançando, no ano de 2015, o efeito de 13,7% sobre a geração de água produzida.

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An Improved Model for Estimating Productivity of Horizontal Drain Hole

Cited by 9 publications

References 24 publications

An Improved Semi-Analytical Approach for Predicting Horizontal and Multilateral Well Performance

An Improved Semi-Analytical Approach for Predicting Horizontal and Multilateral Well Performance

Productivity Models of Infill Complex Structural Wells in Mixed Well Patterns

<b>The influence of oil well on the water generation from the potiguar basin / Brazil

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