One of the limitations of the conventional gas lift system is that it requires wireline intervention step to swap the dummy gas-lift valve placed to facilitate well-pressurization with a live gas-lift valve needed for well production. This wireline intervention step can be costly, can cause HS&E issues, and can delay the hydrocarbon production. Hence, operators look for ways of bringing well to production without having to employ the wireline intervention.
The current paper discusses an intelligent gas-lift valve, which switches from a "dummy valve" configuration to "live valve" configuration without the need of external wireline intervention. The switch from dummy to live valve occurs via use of a temporary dis-integrable plug made out of proprietary degradable alloy, which completely degrades away in the well after the duration chosen by the operation. The valve design, the degradable alloy's property, and laboratory results aimed at demonstrating the usefulness of the intelligent GLV is discussed.
Number of Pages
Rashid K., Bailey W., and Couet, B., "A survey of methods of gas-lift optimization", Modelling and Simulation in Engineering, Vol. 2012, Article ID 516807, Hindwai Publishing Corporation, 2012.
Salinas, B., Zu, Z., Benneet M. R., "Optimizing gas lift operations using disintegrable gas lift valve plugs", SPE-171374-MS, SPE Artificial Lift Conference & Exhibition, Houston, TX, USA, October 2014.
Xu, Z., Bennett M. R., Kritzler H. J., "Smart gas lift valves enhance operational efficiency of offshore wells", SPE-166291, SPE Annual Technical Conference and Exhibition, New Orleans, LA, USA, October 2013.
Xu, Z., Bennett M. R., Kritzler H. J., "Smart gas lift system provides intervention less completions", Offshore Magazine, February 11, 2015.
Chapman, W., "Mono-trip cement-tolerant completions breathe new life into disposable wells", IADC Drilling Contractor, November/December 2005, pp. 60–62.
Boonmeelapprasert, C., , "Gas Lift Journey to Maximize the Asset Value in Platong Field, Gulf of Thailand", IPTC 14807, SPE International Petroleum Technology Conference, 7-9 February 2012, Bangkok, Thailand.
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