钻井液与完井液2023，Vol.40Issue(6)：711-717,7.DOI:10.12358/j.issn.1001-5620.2023.06.003
OBM-1油基钻井液用聚合物微球
A Polymeric Microsphere OBM-1 for Oil Based Drilling Fluids
摘要
Abstract
Serious losses of oil based drilling fluids during drilling greatly affect the time efficiency of the drilling operation and the economic benefits of oil and gas development.Lost circulation materials presently in use are almost all developed for use in water based drilling fluids and thus have deficiencies for use in oil based drilling fluids.A polymeric microsphere OBM-1 for oil based drilling fluids was synthesized through inverse emulsion polymerization and organophilic groups were introduced into the molecules of the final product.OBM-1,a basically spherical material,has particle sizes between 1 μm and 100 μm,and disperses very well in oil based drilling fluids.An oil based drilling fluids treated with 3%OBM-1 has stable rheology and reduced medium pressure filtration rate and high temperature high pressure filtration rate.High temperature high pressure test results show that the higher the temperature,the better the filtration control performance of OBM-1.Test results of plugging under pressure with OBM-1 show that OBM-1 can plug the fractures of 5-40 μm under 15 MPa.Lost circulation test results show that OBM-1 can plug quartz sand-beds of 20-40 mech under 15 MPa.In field application,OBM-1 can effectively reduce the volume of mud lost,the well drilled with an oil based drilling fluid treated with OBM-1 has mud consumption that was reduced by 30.3%,greatly saved the drilling cost.This study has provided a strong technical support for safe and efficient drilling with oil based drilling fluids.关键词
油基钻井液/OBM-1聚合物微球/抗高温/堵漏剂Key words
Oil based drilling fluid/OBM-1 polymeric microsphere/Pressure and temperature resistant/Lost circulation material分类
能源科技引用本文复制引用
张蔚,邱士鑫,张硕,马佳蓥,王龙燕,杨丽丽,蒋官澄..OBM-1油基钻井液用聚合物微球[J].钻井液与完井液,2023,40(6):711-717,7.基金项目
中国石油集团西部钻探工程有限公司横向成果转化-技术服务"油基钻井液用聚合物微球"(HX20210652). （HX20210652）
