Designing and Implementing Deepwater Extended-Reach Sand-Control Initial Completions and Interventions

Pourciau, Robert Donald

doi:10.2118/98563-ms

Cited by 3 publications

References 9 publications

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Expandable Tubulars Facilitate Improved Well Stimulation and Well Production

Durst

Ruzic

2009

SPE Western Regional Meeting

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Growing energy demand is leading the industry to re-evaluate resources found in challenging conditions such as unconventional gas formations, re-entry wells, and/or low producing wells. Cost-effective development of these resources depends on strategic application of advancing production solution technologies. To enhance production and improve recovery processes, more efficient perforating and fracturing methods have evolved along with advancements in wellbore production hardware via use of solid expandable tubulars or combinations of solid expandable and conventional tubulars.Expandable technology applied as a completion/production string facilitates increased fracturing rates, resulting in improved conductivity and enhanced hydrocarbon production. Expandable tubulars can be used in re-entry wells to isolate old perforations, allowing for new zones or new sections within zones to be perforated and stimulated. Either a combination tubular cladding system or a solid expandable system can provide an integral component in new wells or re-entry wells where low-permeability reservoirs, such as those characteristic of unconventional gas formations, require isolation and separation for selective or pinpoint hydraulic fracturing or re-fracturing.Although successful stimulation is routinely attained from hydraulic fracturing, ancillary downhole tools such as conventional completion equipment often compromise results by restricting flow and affecting pressure performance. Solid expandable systems can optimize the fracturing parameters by maintaining larger diameters and providing seals for selective multi-zone or zonal isolation purposes. These production systems can consist of either solid expandable tubulars or expandable sealing sections combined with conventional tubulars using premium connections, thus providing a superior completion solution.This paper will explain how solid expandable tubulars can be used to facilitate first-time fracturing, re-fracturing, and multi-zone fracturing, refurbishing older wells, and attaining large-diameter production/reservoir conduits. Integration and system development of this technology will be discussed. Case histories will be cited to illustrate the effectiveness of solid expandable systems in enhanced production and fracturing applications.

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Expandable Tubulars Facilitate Improved Well Stimulation and Well Production

Durst

Ruzic

2009

SPE Western Regional Meeting

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Best Practices for Sustained Well Productivity: A Lookback in to Deepwater Frac-Pack Completions

Knobles

Blake

Fuller

et al. 2017

Day 1 Mon, October 09, 2017

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Long term productivity is impacted by both the magnitude and rate of skin growth during the life of the well. Many deepwater Gulf of Mexico (GOM) Operators experience premature Productivity Index (PI) decline, which significantly impairs the economics of many major capital projects (MCP). Stringent application of best practices in both design and execution phases of deepwater wells can alleviate premature skin growth during the well life. The current study summarizes some critical best practices that impact the rate of PI decline in a broad dataset of recent cased hole frac pack (CHFP) completions. This study outlines a methodology to assess the relative impact of numerous variables that affect the frac pack deliverability. Application of this methodology requires early project phase development of a 3D mechanical earth model optimizing the number and location of drill centers and associated well paths ensuring they are optimal for frac pack completions. The methodology includes the completion phase, and that the assessment of completion-execution performance is fed back into the planning of future wells. This feedback loop across deepwater projects identifies best practices in execution and continual improvement in future completions. Over 70 CHFP completions in six different deepwater fields are assessed and correlated to their productivity trends. Information from this broad dataset helps to develop new and confirm established best practices. These best practices are derived by cross-functional analysis of factors related to the reservoir, completion-design, execution and the effects on long term deliverability of these wells. Our analysis concluded that three specific factors showed the highest impact in achieving a successful CHFP with improved initial skins and anticipated lower rate of skin-increase with reservoir pressure decline. While many sub-factors contribute to their relative impact, these three key factors include: 1) fracture- wellbore connectivity; 2) sufficient fracture-width and conductivity in the near-wellbore region to withstand changing reservoir conditions; and 3) an undamaged and intact annular proppant pack. The details associated with improving the likelihood of achieving each of the key factors and other findings are explored in-depth in the current work. Consideration of these high-impact variables and other best practices is-assessed and quantified within the new workflow, providing feedback to improve future completions and MCP developments. Our data set provides the most comprehensive collective study of frac pack completions in the Gulf of Mexico. Furthermore, the cross-functional expertise that contributed to the analyses of sub-variables brought the "best minds to the table". These attributes and the wide number of variables that were examined outline key best practices that should apply to any CHFP execution. The improved completions- workflow and comparison between producing CHFP completions allow prediction of future productivity trends. Possession of this knowledge enhances the predictability of production forecasting for business planning purposes.

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Downhole Video Logging

2021

Production Logging: Theoretical and Interpretive Elements

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Designing and Implementing Deepwater Extended-Reach Sand-Control Initial Completions and Interventions

Cited by 3 publications

References 9 publications

Expandable Tubulars Facilitate Improved Well Stimulation and Well Production

Expandable Tubulars Facilitate Improved Well Stimulation and Well Production

Best Practices for Sustained Well Productivity: A Lookback in to Deepwater Frac-Pack Completions

Downhole Video Logging

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