低压易漏井提高固井质量的研究与应用

Research and application on technology of improving cement quality
in low pressure and easy leaking wells

孙清华 彭明旺 夏宏南 张俊 严维锋 屈胜元

长江大学石油工程学院， 湖北 荆州 434023

School of PetroleumEngineering,Yangtze University,Jingzhou 434023,China

普光3井是一口典型的低压易漏井，由于该地区地质条件较为复杂，固井时存在长裸眼、长封固段、多压力系统易漏的特点，给固井施工造成很大的困难，固井质量一直不甚理想。文中综合了提高固井质量的措施，从水泥浆性能与用量设计入手，通过顶替排量优选，现场应用取得了满意的效果。

Well Puguang 3 is a typical low pressure and easy leaking well. It is easy leaking in long open hole, long sealing sections,
multiple pressure regime because the geologic condition is very complex in this area, which bring about many difficulties in
cementing operation.The cementing quality is not satisfactory. This thesis integrates the measures of enhancing cement quality. The
satisfactory effect has been acquired in field application through studying the property and volume of cement paste and optimizing
the displacement effect