天然他拉胶植物胶钻井完井液配方研究

文中开展了天然他拉胶(TLJ-1)植物胶钻井完井液体系的研制,评价了魔芋胶(MYJ-1)、TLJ-1、槐豆胶(HDJ-1)、罗望子胶(LWZJ-1)及琼脂(QZ-1)这5种天然植物胶的流变性能、抗温能力及抗盐能力,优选TLJ-1作为天然植物胶钻井完井液的主要处理剂.确定聚乙二醇(PEG)、磺化酚醛树脂(SMP-Ⅰ)、聚...

Study on formula of drilling and completion fluid with vegetable tala gum

To resolve the contradiction between exploration and development of hydrocarbon resources and environment protection,this paper conducts the study of drilling and completion fluid system with natural vegetable tala gum(TLJ-1).Rheological properties,temperature resistance capability and salt resisting capability of the five vegetable gums are evaluated,including konjac gum,TLJ-1,locust bean gum,tamarind gum and agar.The paper has optimized TLJ-1 as the major treating chemical of drilling and completion fluid with vegetable gum.Polyglycol,sulfonated phenol formaldehyde resin and polyalcohol polyol are determined as the fluid loss agent of drilling and completion fluid with vegetable gum.Polyglycol is optimized as fluid loss agent and superfine calcium carbonate is regarded as rigid infilling particle.Single factor analysis method is adopted to make up the drilling and completion fluid system with vegetable gum.Laboratory test shows that the temperature resistance reaches 120 ℃ for drilling and completion fluid system with natural vegetable gum TLJ-1,that the filter loss is 5 mL at normal temperature and medium pressure and 8.6 mL at high temperature and high pressure,with rhelogical peoperty well and with biotoxicity low.The drilling and completion fluid system with vegetable gum can satisfy the performance requirements of modernized drilling and completion fluid,which is a new drilling and completion fluid system with wide development prospects.