Single-Phase Inflow Performance Relationship for Horizontal, Pinnate-Branch Horizontal, and Radial-Branch Wells

Liu, Huiqing; Jing, Wang; Zheng, Jianming; Zhang, Ying

doi:10.2118/163054-pa

Cited by 14 publications

(5 citation statements)

References 16 publications

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“…For the IPR curve obtained from the simulation, a curve fitting was performed in which a generalized Vogel-type relationship was fitted to the curve (Vogel, 1968). The IPR curve of the base case can be described by the following equation (Bendakhlia and Aziz, 1989;Liu et al, 2012).…”

Section: Procedures For Obtaining Iprsmentioning

confidence: 99%

Single-phase inflow performance relationship in stress-sensitive reservoirs

Wang¹,

Gong²,

Huang³

et al. 2021

Adv. Geo-Energy Res.

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For stress-sensitive reservoirs, understanding the characteristics of the inflow performance relationship is vital for evaluating the performance of a well and designing an optimal stimulation. In this study, a reservoir simulator was used to establish the inflow performance relationship of a well for a wide variety of reservoirs and wellbore conditions. First, a base case was simulated using typical reservoir, wellbore, and fluid parameters. Subsequently, variations from the base case were investigated. The results of the simulation indicate that the dimensionless inflow performance relationship in the stress-sensitive reservoir is similar to the Vogel-type inflow performance relationship, which is used for evaluating the productivity of a vertical well in a solution-gas-drive reservoir. Unlike the two-phase flow in a solution-gas-drive reservoir, the nonlinear characteristic of the inflow performance relationship in stress-sensitive reservoirs is caused by stress-dependent permeability. Furthermore, the stress sensitivity level is the only parameter that affects the nonlinearity coefficient of the dimensionless inflow performance relationship equation. The nonlinearity coefficient was plotted against the stress sensitivity index, and the nonlinearity coefficient was found to be linearly proportional to the stress sensitivity index. This study provides a realistic and less expensive methodology to evaluate the reservoir productivity of stresssensitive reservoirs when the reservoir stress sensitivity level is known and to predict the reservoir stress sensitivity level when the inflow performance relationship of the stresssensitive reservoirs is known.

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Section: Procedures For Obtaining Iprsmentioning

confidence: 99%

Single-phase inflow performance relationship in stress-sensitive reservoirs

Wang¹,

Gong²,

Huang³

et al. 2021

Adv. Geo-Energy Res.

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“…Because its branches increase the contact area between the wellbore and oil formation and make it easier for oil to enter the wellbore or for fluids to be injected into the reservoir. 1 − 3 Moreover, previous studies indicate that the fishbone well has obvious advantages in enhanced oil recovery (EOR) and wide market prospects. 4 , 5 …”

Section: Introductionmentioning

confidence: 99%

“…Compared with the conventional horizontal well, the fishbone well, with multilateral wellbores and increased reservoir drainage area, has high potential for enhancing oil production in the oilfield. Because its branches increase the contact area between the wellbore and oil formation and make it easier for oil to enter the wellbore or for fluids to be injected into the reservoir. − Moreover, previous studies indicate that the fishbone well has obvious advantages in enhanced oil recovery (EOR) and wide market prospects. , …”

Section: Introductionmentioning

confidence: 99%

Dynamic Distribution Characteristics of Oil and Water during Water Flooding in a Fishbone Well with Different Branch Angles

et al. 2022

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Lab experiments, field pilots, and numerical modeling focusing on fluid flow aspects have indicated that multi-branch wells are technically effective and promising. Several researchers have conducted some experiments for a fishbone well strategy with mixed results. Our objective in this work is to study the impact of the different fishbone well patterns, such as branch angle, on the distribution of remaining oil after water flooding. In this paper, the interference effect between branches on oil recovery is studied in three steps. First, the interferences between fishbone wells with different branch angles were measured by hydro-electric simulation experiments. Second, two-dimensional visualization water flooding experiments were carried out to clarify the remaining oil distribution at different branch angles. Third, the distribution of oil and water in fishbone wells was verified by establishing a numerical model. The modeling results agree well with the experimental phenomena. At the same time, the variation trend of water and oil production in each branch is analyzed by numerical simulation results. The results indicate that the production is strongly dependent on the branch angles, and the highest recovery was 60.2% at a 45° branch angle.

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“…The ability of fishtail wells (Figure ) (sometimes referred to as fishbone wells) has been proven by a few authors . Its performance stems from the improved contact areas of the wellbore with the formation due to its branches . Ayokunle and Hashem performed design optimization studies using design of experiments and response surface methodology to investigate the application of fishtail wells to heterogeneous reservoirs with favorable impact of fishtail wells on improving production from reservoirs.…”

Section: Introductionmentioning

confidence: 99%

A fishtail well design for cyclic steam injection—A case study from Yarega heavy oil field in Russia

Abzaletdinov

Ajayi

Elnoamany

et al. 2019

Energy Science & Engineering

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Yarega heavy oil field (YHOF) is a naturally fractured heavy oil field where only recently steam‐assisted gravity drainage (SAGD) technology has been introduced. SAGD employed in this field has so far resulted in early steam breakthrough leading to producer well abandonment and recurrent drilling procedures invariably increasing costs. Therefore, as opposed to SAGD, we propose the joint application of cyclic steam injection (CSS) technology with fishtail wells. The advantages of CSS are well documented. The addition of fishtail wells to this strategy assists in reducing the travel time the mobilized oil takes to arrive at a well perforation. Our results demonstrate that the synergy between these two strategies can further improve recoveries in heavy oil reservoirs. A reservoir simulation model of a sector in the YHOF is employed to understand heat/mass transfer mechanisms and for production enhancement recommendations. Different well configuration strategies were tested on this model. Results from the three‐dimensional sector in the YHOF model suggest that in addition to the thermal development technologies employed in this reservoir, CSS coupled with fishtail wells provided favorable steam‐oil ratios, cumulative energy‐oil ratios, and enhanced cumulative oil recovery for a naturally fractured reservoir. Well abandonment issues arising from SAGD approach currently being applied can therefore be eliminated. Based on results from this research, we recommend the testing of a fishtail well development plan with CSS that includes a 10‐day steam injection, 10‐day soaking period, and 10‐day production period. In comparison with continuous steam injection recovery (4.5% over 3 years), our simulation results showed an improved recovery of 7% over the same period with this concept. In addition to the technical advantage of this strategy, favorable steam‐oil and energy‐oil ratios imply that minimal economic costs are achieved and carbon footprints are lessened.

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Single-Phase Inflow Performance Relationship for Horizontal, Pinnate-Branch Horizontal, and Radial-Branch Wells

Cited by 14 publications

References 16 publications

Single-phase inflow performance relationship in stress-sensitive reservoirs

Single-phase inflow performance relationship in stress-sensitive reservoirs

Dynamic Distribution Characteristics of Oil and Water during Water Flooding in a Fishbone Well with Different Branch Angles

A fishtail well design for cyclic steam injection—A case study from Yarega heavy oil field in Russia

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