景谷盆地储层敏感性研究及其在油田开发中的应用

THE STUDY AND APPLICATION OF RESERVOIR SENSITIVITY IN JINGGU BASIN

储层的敏感性与储层砂岩中粘土矿物成份、含量及储层流体性质密切相关 ,它在油田开发过程中起着重要的作用。在钻井、完井、射孔、投产、修井、注水、酸化、压裂等油井施工作业中 ,都有可能对地层产生不同程度的损害 ,使储层岩石流动通道发生改变 ,影响油井产能 ,严重时可致使油井停产。通过对景谷盆地储层敏感性研究 ,提出钻探、开发过程中油层保护措施建议。研究成果 ,已成功地应用在大牛圈油田开发及注水开发措施中 ,具有很好的经济效益和现场指导意义 ,并对同类的第三纪盆地油气的开发具有一定的指导意义。

The reservoir sensitivity is closely related to clay mineral contents in sandstone and fluid properties of reservoir,which plays an important role in oilfield development.During the operations of drilling,completion,perforating,production,water injection,acidization and fracturing,etc,the formations might be damaged to some extent,which would change the flow channels of reservoir rocks,impact the production of oil wells,even make the wells shut down in serious situations.This paper proposes some measures on formation protection during drilling and development based on a reservoir sensitivity study of Jinggu basin.The methods proposed in this paper have been undertaken in water injection and development of Daniuquan oilfield,which have a considerable significance in economy and site guidance,and can be referred to guide the development of the similar Tertiary basins.