Case Histories of Improved Horizontal Well Cleanup and Sweep Efficiency With Nozzle-Based Inflow Control Devices in Sandstone and Carbonate Reservoirs

Raffn, Anne; Zeybek, Murat; Moen, Terje; Lauritzen, Jon; Sunbul, Ahmed; Hembling, Drew; Majdpour, Abdi

doi:10.2118/19172-ms

Cited by 2 publications

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“…Sequential opening and closing of valves allows imposing higher drawdown on one zone after another, providing better clean-up than conventional completion and resulting in better near Chammout et al 101 wellbore pressure profile and higher well productivity as illustrated in Figure 3 (Jones et al, 2009;Raffn et al, 2008).…”

Section: Poor Wellbore Clean-upmentioning

confidence: 99%

Downhole flow controllers in mitigating challenges of long reach horizontal wells: A practical outlook with case studies

Chammout¹,

Ghosh²,

Alklih³

2017

J. Petroleum Gas Eng.

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Production and injection in long reach horizontal wells pose several challenges in production optimization, flow assurance and reservoir management. Horizontal wells are known to be superior to vertical wells in terms of productivity, however, they are also susceptible to early water and/or gas cut production due to the heel-toe effect and/or permeability contrasts. Uniform distribution of water injection into all zones can also be a challenge in case of high-permeability streaks and fractures. To negate some of the adverse reservoir properties and to control the flow profile of production and injection fluids, downhole flow control devices are increasingly in use and beneficial in regulating flow, improved overall reservoir sweep, improved productivity from the tail section of the well and reduced water coning or gas cusping. Wellbore hydraulics for a long reach well completed with downhole valves have great influence on the reservoir performance and recovery in the long run. This paper presents a discussion aimed at better understanding of the critical challenges that long reach horizontal wells are prone to in terms of completion, as well as the developments so-far that have been applied to capture the physics across the long horizontal section. Three case studies are also discussed with some details emphasizing practical experiences of such wells.

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Section: Poor Wellbore Clean-upmentioning

confidence: 99%

Downhole flow controllers in mitigating challenges of long reach horizontal wells: A practical outlook with case studies

Chammout¹,

Ghosh²,

Alklih³

2017

J. Petroleum Gas Eng.

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Production Optimization for Second Stage Field Development Using ICD and Advanced Well Placement Technology

et al. 2008

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The paper covers the application of new technology drilling and completions equipment in horizontal wells to maximize production and recovery in a thin oil rim reservoir. The parallel process applied to the engineering design, drilling and completion operations, real-time decisions, and results are presented. As part of the second stage development of a mature oil field offshore Malaysia, a shallow target was identified. Initial engineering and reservoir studies suggested that three deviated wells or two horizontal wells would be required to develop the area. While the horizontal wells option was expected to have lower costs, the well construction was far more technically challenging. To ensure maximum production and recovery a 2,000ft lateral section was required, further detailed studies indicated that for the long lateral to be successful, well placement with respect to reservoir boundaries and fluid contacts, and open-hole sand screens of a high mechanical integrity would be critical. Additionally, in order to ensure even oil production and limit early water and gas production In-flow Control Devices (ICD) would be required as part of the completion. The well was actively steered using a Rotary Steerable System (RSS), and Logging While Drilling (LWD) measurements including a deep azimuthal resistivity distance to boundary device. Drilling was very efficient with the well placed close to the top of the sand, avoiding shale contact that could cause screen plugging, and the required distance from fluid contacts. The Real-Time (RT) logs were used to select optimum settings for the adjustable ICD completion prior to running in hole. The completion was run without incident and when the well was placed on line, produced without water breakthrough and without requiring gas lift due to effective clean-up of the entire horizontal section. Production from the well has exceeded expectations and is currently over double that of traditional wells. The application of advanced well placement technology and field adjustable ICD completions has enabled the economic development a small area of remaining hydrocarbon in a mature field, while maximizing production and recoverable reserves. Even with the increased technology cost, the overall project cost was 15% less than if standard well construction techniques had been applied. The accurate placement of the wellbore close to the upper shale and even production along the lateral due to the ICD completion has resulted in a more efficient reservoir sweep increasing recoverable reserves by ~100 MSTB.

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Case Histories of Improved Horizontal Well Cleanup and Sweep Efficiency With Nozzle-Based Inflow Control Devices in Sandstone and Carbonate Reservoirs

Cited by 2 publications

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Downhole flow controllers in mitigating challenges of long reach horizontal wells: A practical outlook with case studies

Downhole flow controllers in mitigating challenges of long reach horizontal wells: A practical outlook with case studies

Production Optimization for Second Stage Field Development Using ICD and Advanced Well Placement Technology

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