Corrections to horizontal drain hole productivity equations for wellbore friction effect

Guo, Boyun

doi:10.1016/j.petrol.2009.12.010

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…The present work is organized as follows: (1) description of the coupling model, including the conceptual model, assumptions, definitions, mathematical model, and solutions; − (2) verification of the proposed coupling model by comparing it with different models using the same case as in; , and (3) the study of the impact of the parameters related to pressure losses on the pressure performance of the coupling model. , …”

Section: Methodsmentioning

confidence: 99%

“…The wellbore type of constant mass flow in common pipes was first applied in the field of engineering fluid mechanics, e.g., water head loss caused by frictional resistance in water conveyance pipelines. Since Dikken introduced the theory of variable mass flow in the wellbore and reservoir seepage flow to a horizontal well, extensive experimental, − numerical simulation, , and theoretical − studies have been conducted on the flow pressure drop in single horizontal wellbores. Asheim et al investigated the friction correlation for a horizontal wellbore, which included the acceleration pressure drop caused by the continuous fluid radial inflow along the wellbore.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Approach for the Calculation of the Pressure Drop in a Multibranch Horizontal Well with Variable Mass Transfer

Yue

Yang

He³

et al. 2020

ACS Omega

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In this study, the pressure drop obtained from physical experiments and theoretical approaches of a single horizontal wellbore is reviewed and a comprehensive wellbore pressure-drop model is derived for a multibranch well. We propose a new coupling model for fluid flow in multibranch wells and reservoirs. Based on this coupling model, we introduce a theoretical approach for the calculation of the pressure drop in a multibranch horizontal well with variable mass transfer. To facilitate the understanding of the physical model, the entire coupling model was divided into three parts: (1) the pressure-drop model of the wellbore, (2) the reservoir inflow model, and (3) the coupling model. By incorporating the acceleration, friction, mixing, confluence, and gravity pressure drops, a coupling model with a finite-conductivity multibranch horizontal well was developed. Newton−Raphson iterations and Visual Basic programming were employed to solve the coupling model and to obtain the pressure and the inflow rate of the wellbore. The wellbore pressure-drop model was verified by comparing it with different models for the same case study, which has been previously introduced in a different research work. Furthermore, the forecast and sensitivity analysis were conducted, and then the results are discussed. In the proposed new model, several factors are considered, including the wellbore structure, the wellbore completion method, the wellbore, and the fluids and formation properties. The presented approach can be used as a valuable tool to analyze the influence of the pressure drop on the productivity of complex-structured wells and vice versa, and to quantitatively investigate the various pressure drops in wellbores, including the friction, acceleration, mixing, confluence, and gravity pressure losses.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical Approach for the Calculation of the Pressure Drop in a Multibranch Horizontal Well with Variable Mass Transfer

Yue

Yang

He³

et al. 2020

ACS Omega

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“…Due to the complex structure of herringbone wells and the influence of perforations on the inflow, it is difficult to predict and evaluate the transient productivity, resulting in a certain gap between theoretical yield and actual yield. − Since Ozkan − introduced the theory of the point-source function method, extensive experimental, numerical simulation, and theoretical studies have been conducted on the reservoir pressure in single horizontal wellbores. − Wang − presented an unsteady seepage model for a horizontal well in a homogeneous anisotropic reservoir. The pressure distribution of the horizontal well on the plane is derived by applying the integration method.…”

Section: Introductionmentioning

confidence: 99%

Transient Productivity Analysis and Completion Parameter Optimization of Perforating Herringbone Wells

et al. 2023

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Herringbone wells are of great significance in tapping the potential of remaining reservoirs, improving recovery efficiency, and reducing development costs and have been widely used in oilfields, especially offshore oilfields. Due to the complex structure of herringbone wells, there is mutual interference between wellbores during seepage, resulting in complex seepage problems, and it is difficult to analyze the productivity and evaluate the perforating effect. In this paper, considering the mutual interference between branches and perforations, a prediction model of transient productivity of perforated herringbone wells was derived based on the theory of transient seepage, and the complex structure with any number of branches, arbitrary configurations, and orientations in three-dimensional space could be considered in this model. The formation pressure in reservoir points at different production times, IPR curves, and the radial inflow of herringbone well were studied by the line-source superposition method, which directly reflected the process of productivity and pressure change, avoiding the one-sidedness caused by using a point source to replace the line source in the stability analysis. Then, through the productivity calculation of different perforation schemes, the influence curves of perforation density, perforation length, perforation phase angle, and perforation radius on unstable productivity were obtained. Orthogonal tests were performed to obtain the degree of impact of each parameter on productivity. Lastly, the selective completion perforation technology was adopted. When the shot density at the end of the wellbore was increased, the productivity of herringbone wells could be improved economically and effectively. According to the above study, a scientific and reasonable construction scheme is recommended for oil well completion construction, which provides a theoretical basis for the improvement and development of perforation completion technology.

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“…Dikken [1] in 1989 proposed the first model to evaluate the production performance of a horizontal well with the consideration of the wellbore pressure drop. Since then, [2,3] active research work has been carried out on horizontal wellbore pressure drop using experimental [4][5][6][7][8], analytical [9][10][11][12], and simulation methodologies. Asheim et al [7] made a study on friction factor correlation for horizontal wellbore, which included accelerational pressure drop caused by the continuous fluid inflow along the wellbore.…”

Section: Introductionmentioning

confidence: 99%

The Pressure Drop Model of Liquid Flow with Wall Mass Transfer in Horizontal Wellbore with Perforated Completion

Yue

Chen

et al. 2014

Mathematical Problems in Engineering

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The fluids in horizontal wells can exhibit complicated flow behaviors with wall mass transfer, partly due to the interaction between the main flow and the radial influx along the wellbore and the completion parameters used. This paper presents a novel regression model established based on the experiment data retrieved from the available literatures to determine the apparent friction factor for a single phase wellbore flow. The proposed model has the potential to be readily applicable to different perforation parameters, such as shot phasing and shot density. Compared with other models in the same practical example which is offered by Ouyang et al., the model of this paper to calculate the wellbore pressure is applicable and reasonable. This new model can be easily incorporated into reservoir simulators or analytical reservoir and horizontal wellbore inflow coupling models.

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Corrections to horizontal drain hole productivity equations for wellbore friction effect

Cited by 7 publications

References 23 publications

Theoretical Approach for the Calculation of the Pressure Drop in a Multibranch Horizontal Well with Variable Mass Transfer

Theoretical Approach for the Calculation of the Pressure Drop in a Multibranch Horizontal Well with Variable Mass Transfer

Transient Productivity Analysis and Completion Parameter Optimization of Perforating Herringbone Wells

The Pressure Drop Model of Liquid Flow with Wall Mass Transfer in Horizontal Wellbore with Perforated Completion

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