Optimization of gravel pack techniques in Baram South using a statistical tool

Hatta, S.A.M. and Jadid, M. and Saaid, I.M. (2012) Optimization of gravel pack techniques in Baram South using a statistical tool. In: UNSPECIFIED.

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Abstract

Baram field is a mature oil field in Sarawak, Malaysia and it is the largest and most structurally complex field in the Baram Delta Province. The reservoirs are thinly stacked and predominantly friable and unconsolidated requiring active sand control by gravel packing techniques being the most reliable sand control method available. Sand production in Baram wells resulted in several wells being shut-in, low oil production and costly surface maintenance to remove the sand. The drawbacks of gravel packing techniques were its high wellbore skins due to gravel carrier fluids, intermixing of gravel and fine sands, and blockage of gravel filter bed from fines migration over time resulting in lower well PIs and flow efficiencies through the gravel pack (GP) completions. This paper reviews the gravel packing techniques applied in 47 completions in Baram South with the aim of identifying the most optimum method for gravel packing in future Baram South wells. A statistical tool called Taguchi Method for Design of Experiment and Analysis of Variance (ANOVA) were employed to analyze impact of the well deviations, gravel packing techniques and permeability variation on skin factor. It is a simple and reliable tool to analyze extensive amount of data and introduces the signal-to-noise ratio as an indication of effect each variable has on the output (skin). The statistical study concluded that the most suitable gravel packing technique for Baram South is High Rate Water Frac (HRWF). The GP technique adopted appears to be the dominant factor contributing to the skin while the type of reservoir and the deviation of the well have minimal effect. Copyright 2012, Society of Petroleum Engineers.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 0; Conference of SPE Annual Technical Conference and Exhibition 2012: Unconventional Wisdom, ATCE 2012 ; Conference Date: 8 October 2012 Through 10 October 2012; Conference Code:95576
Uncontrolled Keywords: Carrier fluids; Complex fields; Dominant factor; Experiment and analysis; Fine sand; Fines migration; Flow efficiency; Gravel filters; Gravel pack; Gravel packing; High rate; Malaysia; Mature oil fields; Minimal effects; Oil production; Optimum method; Sand control; Sand control methods; Sand production; Sarawak; Skin factors; Statistical study; Statistical tools; Well deviations; Wellbore, Exhibitions; Oil fields; Oil well completion; Petroleum reservoir evaluation; Reservoirs (water); Statistical mechanics; Taguchi methods, Gravel
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 15:50
Last Modified: 09 Nov 2023 15:50
URI: https://khub.utp.edu.my/scholars/id/eprint/2600

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