基于有机盐钻井液的稳定井壁新技术应用研究

介绍了低密度基液和高密度基液的有机盐钻井液在克拉玛依、塔里木、华北等油田的应用典型实例。实例表明,有机盐钻井液具有低固相含量,强抑制性,较低静切力,维护处理简单等优点,而且钻井综合成本可以接受。但没有得到大面积推广应用的原因主要是自身单位成本较高,因此,有机盐钻井液推广应用的对策在于降低加重剂成本,开发配套处理剂,优化钻井液配方,研制更高水溶液密度的加重剂,增加开发商以促进竞争,加强有机盐微观作用机理研究以及重复利用废弃钻井液研究。

A Novel Technology for Stabilizing Borehole by Using Organic-salts Drilling Fluids

It is introduced that the low density brines and high density organic-salt drilling fluids is applied in Karamay,Tarim and Huabei Oilfields in China.These cases indicated that the organic-salts have advantages as follows: low solids content,strong inhibitive ability,lower shear strength,simple field maintenance,and reasonably combined cost.To reduce organic salt unit cost it needs reducing weighting material cost,developing drilling fluid agents,preparing optimizing drilling fluid formula,developing weighted agents for more high-water-soluble density,and increasing more suppliers for competition,strengthening the study of microcosmic action mechanics and researching recycle waste mud.