CAJ | 학술논문

金山地区是松辽盆地的主要油气聚集区。该区岩性复杂，泥岩发育，钻井过程中随着钻井液浸泡时间的延长，井壁稳定问题突出。通过对地层理化性质和力学稳定性分析，是由于钻井液的化学稳定性不足导致了井壁的失稳。为了提高钻井液的化学稳定性，提出了“封堵”防塌的技术方案。研制的防塌钻井液体系具有封堵和抑制性强等特点。该体系高温高压失水可以控制在11 mL／30 min以内，砂床侵入深度2 cm，泥页岩回收率达到95％以上，钻井液抑制和封堵效果显著。
금산지구시송료분지적주요유기취집구。해구암성복잡，니암발육，찬정과정중수착찬정액침포시간적연장，정벽은정문제돌출。통과대지층이화성질화역학은정성분석，시유우찬정액적화학은정성불족도치료정벽적실은。위료제고찬정액적화학은정성，제출료“봉도”방탑적기술방안。연제적방탑찬정액체계구유봉도화억제성강등특점。해체계고온고압실수가이공제재11 mL／30 min이내，사상침입심도2 cm，니혈암회수솔체도95％이상，찬정액억제화봉도효과현저。
Jinshan is hydrocarbon accumulation area chiefly, which have complex lithology and mudstone development. With long soak time of drilling mud, problems of wall stability are projecting.Be based on layer physics and chemistry and mechanics stability analysis, scarce chemistry stability of drilling mud which cause wall instability.To heighten wall stabili-ty,Proposeing first opinion of plugging prevent caving.Prepareing prevent caving drilling mud.The system have sealing and restrain characteristics powerfully.High temperature and pressure filtration can attain eleven millilitre under.Sand bed in-trude into two centimeter.Mud shale rate of recovery can attain ninetyfive percent above, effect of drilling mud prevent ca-ving marked are remarkably.