Abstract: In order to effectively develop the Sarvak reservoir of the YD Oilfield, PIPESIM software was used to optimize tubing size, gas volume, gas lift valve and the production string in the Phase I Production Capacity Building Plan. Analyses were made based on formation lithology, property and fluid properties, combined with the characteristics of the gas lift development.An integrated gas lift completion string comprising of gas lifting, acidizing and production and supporting completion tools were also developed. Based on the contrastinganalysis of production in well tests and the expected values for those wells in Phase I, screen completion string in horizontal section in Sarvak reservoir was further optimized froman engineering aspect. Adding flushing pipe to the slotted screen was suggested, so that the residual completion fluid in outer circular of the screen could be effectively displaced, providing a clean wellbore for subsequent acidizing treatment. This optimized technique would provide a more reliable support for efficient development of the Sarvak reservoir in the near future.