坨30井钻井液工艺技术

Drilling Fluid Technology in Tuo 30 Well

根据地层特征及邻井经验，辽河油田坨３０井分井段别选用普通分散、细分散、硅稳定剂及充气钻井液体系。按照评价井和定向井的要求，对充气钻井液及邻近直井所用钻井液配方进行了改进。结果表明，坨３０井分开段选用不同钻井液体系是成功的，其中充气钻井液经受了裸眼长、井温高和定向、取心等考验。

According to formation characters and experience of adjacent wells,conventional dispersed,fine dipersed,siljcon stabilized and aerated drilling fluid systems were respectively adopted in different intervals of Tuo 30 well in Liaohe oilfield.In order to meet the requirements of evaluational well and directional well,the ingredients of aerated drilling fluid and that used in adjacent straight well were modified.It proved that using different drilling fluid systems in different intervals of Tuo 30 well was successful.The aerated drilling fluid withstanded tests of long open hole,high temperature,orientation and coring.