COSL Openhole Horizontal Gravel-Pack System (COHP)IntroductionCOSL Openhole Horizontal Gravel-Pack System applied for gravel-pack sand control completion in openhole horizontal wells, which can successfully accomplish the string tripping in, setting, testing, releasing, circulation, gravel pack, acid, washing, tripping out etc. The designed string can maintain the pressure in horizontal wellbore, which is greater than that of formation, protecting the stability of openhole wall and ensuring smooth of the gravel pack operation. • COHP allows normal circulation and proper rotating to resolve the problem of tight trip quickly, when tripping. • The packer of COHP with beginner diameter has reliable setting and hanging performance, and two-stage setting
mechanism • COHP can bear load to prevent pipe moving and ensure the best filling result, when pack • COHP can keep the well bore clean after pulling the service tool from the hole at the end of pack. • COHP can withstand 46MPa working pressure and 300 degrees F (150 degrees C) working temperature, which could
meet the requirement of frac-pack Completion.
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