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针对科探井高图１井压力系统复杂、油气显示活跃、区域性井壁失稳严重的特点，结合邻井安平１井实钻中遇到的难题，文章进行了大量的前期研究及预测工作，理清钻井液工作技术思路，制定了阶段性的目标及攻关计划及现场试验，使科研成果及进应用到钻井工作中去。选择和应用两套适合该井特点的ＫＣ１－聚合物钻井液和钾石灰－聚合物钻井液体系，并在合理确定钻井液密度方面进行了新的探索，确保了该井安全、优质、高效的完成。文章试图

PROBE OF DRILLING FLUID TECHNIQUE FOR SCIENCE EXPLORATION WELL����STUDY AND APPLICATION OF DRILLING FLUID TECHNIQUE FOR WELL GAOKE-1

??In view of the characteristics of well Gaoke-1,a science exploration well,such as complex pressure system,active oil and gas shows and seriously unstable borehole wall regionally and in the light of the difficult problems encountered in the practice of drilling adjacent well-well Anping-1,the authors make a lot of preliminary studies and forecasting works,make clear the train of thought to the drilling fluid technique,work out a plan for tackling key problem and on-site test,define the objective in each stage as well as make the achievements in scientific research be applied to drilling work in time.The potassium chloride polymer and potassium lime polymer drilling fluid systems suited to the characteristics of this well are selected and used,and a new exploration on determining drilling fluid density is made,ensuring a safe,high-quality and high-efficiency well completion.The article tries to explore a general law of the drilling fluid for science exploration well through analyzing the application situation of the drilling fluid technique adopted in well Gaoke-1.