Research on the optimization of sand control technologies for shale oil platform wells

At present, large-scale volume fracturing has become the primary technique for reservoir reconstruction. The conductivity associated with multi-scale fractures requires the application of a significant quantity of proppant. Nevertheless, the flowback of the proppant after the fracturing operation may reduce its efficacy. Furthermore, the proppant that ascends to the surface has the potential to erode and compromise surface pipelines, disrupting normal oil and gas production. In addressing the sand production challenges encountered after fracturing operations on the Jimsar platform, two sand control methodologies were proposed: fiber sand control and coated sand control. A comparative evaluation of the efficacy of these two sand control techniques resulted in the development of a multi-stage fiber sand control approach. This approach is specifically designed for horizontal wells following fracturing, with a focus on determining the optimal timing for fiber addition during the different phases of sand addition, aimed at reducing the flowback of proppant. The experimental findings demonstrate that incorporating fibers during the final quarter of the pumping process for 30/50 mesh quartz sand leads to a reduction in the amount of proppant flowback by 59.03%. This approach not only contributes to the stability of the proppant structure at the fracture roots but also minimizes the amount of proppant flowback, reduces material costs, and improves the effectiveness of sand control.