一种超深水平井堵漏材料室内评价研究

摘要

针对超深水平井堵漏中常规堵漏材料的抗温、抗压特性,以及大颗粒堵漏材料输送等问题,室内研制了一种超深水平井架桥颗粒堵漏材料CQ-GXJQ.通过室内评价分析表明,该堵漏材料具有粒度可调、抗高温、机械强度高、密度低、具化学惰性等优点,可作为刚性架桥粒子用于超深水平井桥接堵漏技术中,避免因高温、高压作用导致堵漏剂性能发生变化或因长水平段运移过程中大颗粒堵漏材料提前沉降堆积而引起的堵漏失败问题.%Conventional plugging materials has some problems during the plugging process in ultra-deep horizontal wells,such as poor high-temperature resistance,poor compression resistance and large particle plugging material migration.A ultra-deep horizontal well plugging material CQ-GXJQ was developed and evaluated.The results show that the CQ-GXJQ has excellent performance.CQ-GXJQ can be made into different size particles with high temperature resistance,high mechanical strength,low density and high chemical inertness.It can be used in the lost circulation control in ultra-deep horizontal wells as rigid bridging particles.And its properties can effectively avoid the failure of plugging caused by the performance change of plugging materials in high temperature and high pressure and the early sedimentation of large particle plugging materials in the long horizontal section migration process.