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 Angsi: Malaysia’s 1st. Tight Gas Development
Sri Ganesh Gopalakrishnan, SPE and Razli Shawari,
petronas Carigali Sdn Bhd and Kamal Kassim, SPE,
Mohd Naguib Ab Majid, SPE and M Nazri M Nor, SPE,
Esso Production Malaysia Inc.
Although the Angsi field is considered to be “lean,” as the maximum liquid dropout is only 1.5%, this paper documents substantial productivity impairment as condensate yield increases due to multiphase flow effects.
In light of these issues, the fracture conductivity was improved by substituting 16/30 mesh CARBOPROP® instead of 20/40 CARBOHSP®. Laboratory testing suggested a 40% increase in effective conductivity with the larger proppant at the projected stress level of 7500 psi. In addition to reducing total proppant cost, these conclusions were verified with a four-fold increase in production using 16/30 ceramic CARBOPROP®. Even in this tight gas formation, the fracture conductivity was shown to be a controlling factor in production rate.
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