A Simple Approximate Method to Predict Inflow Performance of Selectively Perforated Vertical Wells

Guerra, Eddie M.; Yildiz, Turhan

doi:10.2118/89414-ms

Cited by 2 publications

(1 citation statement)

References 25 publications

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“…Other investigators used different modeling approaches to examine the flow in perforated completions (Dogulu, 1998;Ansah & Proett et al, 2002;Guerra & Yildiz, 2004;Gou & Guo et al, 2018;Wu & Zhu et al, 2020;Gou & Wang et al, 2020). Tariq (1987) developed a model for modeling steady-state flow in perforated completions.…”

Section: Introductionmentioning

confidence: 99%

Relationship between perforation depth and core flow efficiency

Hao

Geology²,

Duan³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

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The perforation parameters have a large influence on the productivity of offshore wells. Perforation depth and core flow efficiency (CFE) are the key parameters for evaluating perforation response, but the relationship between these two parameters is seldom studied. In this paper, the perforation experiment and CFE evaluation are carried out. The results show that with the increase of confining pressure, perforation depth decreases, CFE increases, and perforation damage decreases. The CFE decreases with the increase of perforation depth, and the relationship between them satisfies the exponential function.

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Section: Introductionmentioning

confidence: 99%

Relationship between perforation depth and core flow efficiency

Hao

Geology²,

Duan³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

View full text Add to dashboard Cite

show abstract

Performance Analysis of a Selectively Completed Horizontal Well

Seyide

2017

Day 3 Wed, August 02, 2017

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Horizontal wells are generally perforated along a well profile of interest in order to establish flow across the casing for entry of formation fluids into the wellbore, while limiting sand production from unconsolidated reservoirs, wellbore collapse and early water or gas production. In open hole horizontal wells, the formation produces uniformly with no flow convergence towards the wellbore, and productivity index is constant along the horizontal section of the well. However, selective perforations result in multiple flow convergence regions along the wellbore, resulting in a pseudoskin effect which reduces well productivity. Hence, there is the need for optimization of a horizontal well productivity by designing the appropriate number and length of perforation intervals with minimal pseudoskin. This paper analyses the effect of selective completion on the inflow performance of a horizontal well with the aid of a reservoir simulation model (developed using EclipseTM black oil simulator) and the simple approximation method developed by Guerra and Yildiz which initially modelled selectively perforated vertical wells. Guerra and Yildiz's procedures were modified for a horizontal well under the assumption that the horizontal well is producing from a thin oil rim, allowing for a dominant radial flow. Four (4) case scenarios were used for sensitivity analysis and it was observed that both the numerical and approximation models show similar trends in performance indices. The results obtained also indicate that for the same percentage length open to flow, the higher the number open intervals, the larger the productivity index until the increment becomes insignificant, therefore subject to optimization.

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A Simple Approximate Method to Predict Inflow Performance of Selectively Perforated Vertical Wells

Cited by 2 publications

References 25 publications

Relationship between perforation depth and core flow efficiency

Relationship between perforation depth and core flow efficiency

Performance Analysis of a Selectively Completed Horizontal Well

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