The Performance of Water Floods with Horizontal and Multilateral Wells

Algharaib, Meshal; Gharbi, Ridha

doi:10.1080/10916460500411887

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…The production of multilateral wells was approximately 5% higher than that of highly deviated wells. The small difference was due to the substantial cumulative exposure of laterals within the entire reservoir relative to the single sections of the highly deviated wells [57]. Nevertheless, this effect was not pronounced because the reservoir is relatively shallow.…”

Section: Resultsmentioning

confidence: 97%

“…This affects oil recovery from shallow reservoirs (which are also composed of vertical non-communicating layers), resulting in the lowest recovery among the four well types (Figure 10d). In contrast, multilateral wells should have the highest recovery because of their lateral branching structure [57,58]. However, these wells only exhibited the highest production during the first three years of operation before sharply decreasing to the same production rates as those of the vertical wells.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Well Orientation on Oil Recovery from Waterflooding in Shallow Green Reservoirs: A Case Study from Central Africa

2021

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Recovery efficiency is a key factor in decision-making in oil and gas projects. Although structural setup and well type considerably influence waterflood recovery, few studies have explored the performance of highly deviated wells during the waterflooding of complex shallow reservoirs. Here, we applied numerical simulations to investigate the performance of vertical, horizontal, multilateral, and highly deviated wells during waterflooding of complex shallow reservoirs using the J1 Oilfield as a case study. Recovery efficiencies of 31%, 33%, 31%, and 26% could be achieved for vertical, horizontal, multilateral, and highly deviated wells, respectively. The gas production rate was 39% higher in the vertical wells than in the other types. Highly deviated wells yielded the highest water-cut (80%) over a short period. Highly deviated wells delivered the least production, and, despite branching laterals, multilateral wells were also not the most productive. Our results provide insights into the performance of different well types during the waterflooding of green heterogeneous non-communicating reservoirs and present an example of the successful practical application of waterflooding as an initial recovery mechanism when oil is near the bubble point. This study indicated that multilateral wells are not a panacea in reservoir development. Highly deviated wells are the ideal choice for the shallow, heterogeneous non-communicating reservoirs when economic and environmental impact are considered in decision-making. Well design should be a case-by-case study considering reservoir characteristics, economics, and environment impact.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Effect of Well Orientation on Oil Recovery from Waterflooding in Shallow Green Reservoirs: A Case Study from Central Africa

2021

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“…They cannot be directly applied to calculate the productivity of a multilateral well. Algharaib and Gharbi (2007) discussed the productivity of multilateral wells using numerical simulation; other authors studied the productivity of multilateral wells using experimental methods (e.g., Han et al, 2004;Yildiz, 2005;Huang et al, 2006).…”

Section: Introductionmentioning

confidence: 98%

Fishbone Multilateral Well Productivity in a Five-Spot Pattern

Cheng

Huang

2011

Petroleum Science and Technology

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In this work, we present an approximate model for estimating a fishbone multilateral well productivity in a five-spot well pattern producing at steady state based on the subdivision of the seepage field of a five-spot well pattern and on conformal transformation and equivalent flow resistance theories. An experimental study was conducted on an electrical analog apparatus. Experimental data were compared with the results from the model. Excellent agreement was obtained.

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The Performance of Water Floods with Horizontal and Multilateral Wells

Cited by 2 publications

References 9 publications

Effect of Well Orientation on Oil Recovery from Waterflooding in Shallow Green Reservoirs: A Case Study from Central Africa

Effect of Well Orientation on Oil Recovery from Waterflooding in Shallow Green Reservoirs: A Case Study from Central Africa

Fishbone Multilateral Well Productivity in a Five-Spot Pattern

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