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Abstract The reservoir in Bohai bay, China is mainly composed of unconsolidated sandstone, which necessitates the use of effective sand control techniques due to high potential for sand production. The Single-Trip Multi-Zone sand control technology can help customers to save large quantity of rig time over Cased-hole conventional stack pack technology by significantly reducing the number of trips in and out of the well with the work string. As a result, it has been widely used in the development of Bohai bay, because of its cost effectiveness and ability to complete multiple zones in a single trip. However, increasing demands for longer perforation length in Bohai bay have introduced new challenges. The current Single-Trip Multi-Zone sand control technology, limited by the length of the inner tube, is no longer sufficient to complete sand control operations in a single trip. Many sand control operations now require multiple stages of Single-Trip Multi-Zone completions, which involve additional perforation and casing cleanup trips. To address customer's demands for ultra-long sand control completions and maintaining operational efficiency, the Enhanced Single-trip Multi-zone technology was introduced into China by Halliburton. With the new technology, customers now can complete ultra-long sand control operations in a single trip. All pay zones are perforated, simultaneously. And all lower sand control equipment (screens, sleeves, packers, etc.) as well as service tools are assembled and deployed together. Through the manipulation of the frac sleeves and circulation sleeves, each zone is treated individually from the bottom up. After each zone is completed, the corresponding sleeves are closed and pressure tested, providing well control between the wellbore and the reservoir. As of May 2025, a total of two wells, each well with six treatment zones, have been successfully completed with Enhanced Single-trip Multi-zone technology. The two field installations demonstrate great advantages. Equipment preparation in the workshop requires no more than seven days.The second sand control operation was completed in seven days, approximately five days ahead of the customer's scheduled timeline. On average, each zone was treated within five hours, and no HSE incidents or non-productive time (NPT) were recorded. This paper discusses the challenges, planning, workshop preparation, field execution, and results of the Enhanced Single-trip Multi-zone completions, with a focus on the downhole completion hardware. It also describes why Enhanced Single-trip Multi-zone technology was chosen. Finally, the paper outlines the "best practices" learned from the first two installations; the challenges encountered during the job execution and providing a comparison between Enhanced Single-trip Multi-zone technology with conventional Single-Trip Multi-Zone technology to highlight the advantages of the new system.