Abstract
Summary This paper discusses the design and execution of dual-zone gravel packs in very shaly and silty formations of median sand grain size less than 30 μm. An oversized gravel was selected for sand control and, as a consequence, the openhole gravel-pack technique was adopted to reduce the effect of intermixing between formation and gravel-pack sand. During the completions in the first five wells, we encountered and solved several operational problems, including those involving (1) borehole stability, (2) setting of inflatable packer for zone isolation, (3) hole preparation, and (4) gravel placement. From the lessons we learned, another 11 wells were completed with dual openhole gravel packs without significant problems. After 1 year of production, the flow performance from the wells met or exceeded the initial objectives.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
