ARCHIVED REPORTS UIC PERMIT APP - Laserfiche WebLink

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7.0 SAND CONTROL DESIGN AND GRAVEL PACK It is considered likely that the sand fill discovered on May 16 was produced into the wellbore and carried up the hole during the final minutes of flow on the previous day, after nitrogen injection had been shut off and the well was surging. Considering this and the earlier problem with running sand, it was decided that some form of sand control would be necessary to stop the sand influx, even with the well in injection service. 7.1 Design Samples of sand from the cleanout operation were given to Otis Engineering and Baker Hughes Inteq (formerly Baker Sand Control) for size distribution analysis and sand control design recommendations. Both companies produced similar recommendations for a gravel- packed wire-wrapped screen liner inside the 5-in. cemented liner. Otis also proposed, as an alternative, an insitu consolidated gravel pack with no screen. The gravel-packed screen completion was selected, and Baker was chosen to supply the liner equipment and gravel packing services. The design called for a 0.020 gauge wire-wrapped screen and a 12-20 U.S. mesh gravel pack. Figure 7.1 is a diagram of the well, as completed, with the liner and gravel pack. The sand size distribution analysis and details of the wire-wrapped screen liner assembly are in Appendix C. 7.2 Field Operations Beginning on June 2, rig operations were resumed to clean out sand and install the liner assembly and gravel pack. Sand was cleaned out of the hole by conventional circulation with Mesquite Group, Inc. -15