Boost Capacity of Velocity String Completions in Sultanate of Oman by Including Sliding Side Door

Hinai, Khalid Al; Veeken, Kees C.A.M.; Janusz, Norbert; Mabsali, Laila; Naabi, Hajer; Al-Ruheili, Sharifa; Ruzaiqi, Musallam

doi:10.2118/188827-ms

Day 2 Tue, November 14, 2017 2017

DOI: 10.2118/188827-ms

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Boost Capacity of Velocity String Completions in Sultanate of Oman by Including Sliding Side Door

Khalid Al Hinai¹,

Kees C.A.M. Veeken²,

Norbert Janusz³

et al.

Abstract: Velocity strings are routinely installed to remediate liquid loading of gas wells. However, besides restoring stable production, velocity strings also reduce well capacity, easily by up to 50%. In PDO, a sliding side door (SSD) was introduced as part of the velocity string completion to reduce the loss of capacity by facilitating additional gas flow via the new annulus created between velocity string and original tubing. This paper documents different field cases that demonstrate how the SSD is manipulated to … Show more

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Cited by 4 publications

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Gas Well Deliquification Strategy in Sultanate of Oman

Veeken¹,

Al-Rashdi²,

Al-Hashami³

2022

Day 3 Wed, March 23, 2022

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PDO is operating some 600 gas wells in the Sultanate of Oman and almost all these gas wells will experience liquid loading during their production life. Surface depletion compression and gas well deliquification are essential to sustain stable production and to maximize ultimate gas recovery. This paper provides an overview of the deliquification measures that are assessed, adapted and implemented in PDO, and describes how to select the best suitable combination of deliquification measures based on well specific reservoir, inflow and outflow parameters.

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Gas Well Deliquification Strategy in Sultanate of Oman

Veeken¹,

Al-Rashdi²,

Al-Hashami³

2022

Day 3 Wed, March 23, 2022

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Velocity Strings in Sultanate of Oman Gas Fields; A Case Study

Janusz¹

2022

Day 3 Wed, March 23, 2022

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Petroleum Development Oman operates large amount of gas wells in Sultanate of Oman. Due to the liquid loading occurring in these ageing assets, PDO has already installed 110+ Velocity String completions in the various gas fields across the concession area. In the 2015–2019 period, 39 wells in the Saih Rawl field were retrofitted with Velocity Strings. This paper presents the integrated and standardized approach to Velocity String candidate selection and compares the production performance post-installation against the forecast.

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Deep-Set Velocity String for Liner Deliquification

Hajri¹,

Ghaempanah²,

Veeken³

et al. 2022

Day 2 Tue, November 01, 2022

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The installation of a smaller size tubing or velocity string inside an existing tubing completion is a well-known deliquification technique. The velocity string comes in various designs providing different functionalities for deliquification. Typically, velocity strings are installed to the top of the producing reservoir interval. In case multiple reservoirs produce across significant liner length (the liner here is the length/area between the two reservoirs), this "shallow" velocity string does not provide deliquification across the reservoir liner section. Depending on the size and length of the reservoir liner and the inflow performance of the producing reservoirs, the liquid loading across the liner can have significant adverse impact on production in which case deliquification by means of a "deep" velocity string installed across the reservoir liner becomes essential. This paper shares different designs, a modeling methodology and real-life assessment cases of such deep-set velocity strings, to achieve deliquification across the tubing completion above the reservoir and the liner completion straddling the reservoir. The proposed designs provide different flow options by changing the setting of sliding side doors (SSD's) embedded in the design or isolating the two zones by packers. The proposed modeling methodology helps to compare the performance of different flow options for shallow and deep velocity string designs. This paper continues by sharing three field cases of deep-set VS for the assessment of its real-life application.

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Boost Capacity of Velocity String Completions in Sultanate of Oman by Including Sliding Side Door

Cited by 4 publications

References 1 publication

Gas Well Deliquification Strategy in Sultanate of Oman

Gas Well Deliquification Strategy in Sultanate of Oman

Velocity Strings in Sultanate of Oman Gas Fields; A Case Study

Deep-Set Velocity String for Liner Deliquification

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