一种具有暂堵性的防砂筛管OA

In recent years,innovative applications of high-strength soluble new composite materials have emerged in the field of drilling and completion engineering at home and abroad.Their practice in downhole tools has become a new technology that has attracted much attention,providing key solutions for optimizing completion processes.The core of this technology is to use high-strength soluble composite materials as raw materials to prepare soluble pins that are suitable for underground working conditions.In the early stage of screen completion operations,soluble pins are accurately installed to temporarily plug the screen flow channel,thereby quickly establishing a stable mechanical sealing environment,meeting core operational requirements such as wellbore pressure control and drilling fluid circulation during the drilling process,and ensuring early construction safe and efficient advancement.When the drilling operation enters the later completion stage,complex mechanical operations are not needed.Only the conventional well washing fluid-high-concentration chloride solution is injected to start the dissolution process of the temporary plugging material.This kind of salt solution can have a controllable chemical reaction with the soluble pin,causing it to gradually dissolve and disappear,and the originally blocked screen flow channel will be smooth.Finally,the full-process closed loop of the screen temporary plugging completion process is efficiently realized,greatly simplifying the operation steps and reducing construction risks.