涌水含气地层封孔材料的设计及野外试验

Design and Field Test of Sealing Material for the Water Gushing and Gas Bearing Formations

常规素水泥浆封孔材料不能完全满足涌水含气特殊地层条件的封孔要求。以水泥砂浆为研究对象,通过正交实验,设计了水泥砂浆的配比,得到了适用于涌水含气地层的封孔材料配方,达到了钻探对封孔质量的技术要求。在室内实验的基础上,结合通地1井具体地层条件,根据不同井段的封孔质量要求,采用相应封孔材料配方进行了野外应用试验。结果表明,所设计的封孔材料配方能够满足涌水含气地层的封孔质量要求。

The conventional plain cement sealing material cannot fully meet the sealing requirements of the special geological （ormation with water gushing and gas Dearing. Taking the sealing cement mortar as the research object, the proportion of cement mortar was designed by orthogonal exlperiment, the formula of the sealing material suitable for the water gushing and gas bearing formation was obtained, and the technical requirements for borehole sealing quality are obtained. On the basis of laboratory exlperiments and combined with the specific formation conditions of Tongdi well- 1 , the field application tests were carried out with the corresponding sealing material formula accord ing to the sealing quality requirements of different well sections. The results show that the designed sealing material formula can meet the requirements of borehole sealing quality in the water gushing and gas bearing formation.