Single Trip Multizonal Resin Sand Consolidation and Fracturing, A Novel Technique in Sand and Fines Control

Abstract

Abstract Objectives/Scope An Unconsolidated Near Wellbore (NWB) area of the formation as well as the high fines content in the formation have led to massive sand and fines production and therefore, Loss of Pressure Containment (LOPC) at surface facilities. Resin sand consolidation to strengthen the NWB area and fracturing to immobilize fines during production are necessary. However, performing both resin sand consolidation and fracturing completions in multizonal reservoirs is too costly. Therefore, a single trip multizonal sand consolidation and fracturing job is performed to reduce operational days and cost Methods, Procedures, Process Three (3) different techniques to perform resin sand consolidation and fracturing are compared. First, is using a "Mechanical Service Packer (MSP) with Sand Plug" to perform both resin sand consolidation and screenless fracpack jobs. Second, is using "MSP with Sand Plug" to perform resin sand consolidation and to utilize Multizone Single Trip (MZST) tool to fracpack. Third, is using a Straddle Packer to perform resin sand consolidation and to utilize MZST tool to fracpack. The first technique was performed in wells W-1 and D-1 and the third technique was performed in well H-1 Results, Observations, Conclusions The technique to perform resin sand consolidation as part of the primary sand control method in a new well followed by fracturing the formation to immobilize the fines is a novel technique. The utilization of a Straddle Packer to perform multizonal single trip resin sand consolidation followed by running MZST tool for fracturing has managed to reduce the operational days by more than half compared to the other techniques. Sand and fines production has been reduced significantly in wells W-1 and H-1 as a result of the novel technique. Novel/Additive Information The decision to perform resin sand consolidation prior to fracturing the reservoir is dependent on the Ultimate Compressive Strength (UCS) of the rock. Unconsolidated formation with UCS less than 2,000 psi is to be strengthened via resin consolidation. The single trip multizonal resin sand consolidation via straddle packer was first performed in well H-1 with 6 zones.