本文選題：海泡石鉆井液 + 鉆井液漏失�。� 參考：《石油勘探與開發(fā)》2017年03期

【摘要】：通過室內(nèi)實驗和理論分析,研究了不同溫度、壓力條件下添加碳酸鈣前后海泡石水基鉆井液對不同滲透性地層的封堵性能,論證將碳酸鈣作為堵漏劑添加到海泡石鉆井液中的可行性。在實驗溫度為27~204℃、實驗壓力為2 070 kPa和6 895 kPa條件下進(jìn)行流變性和濾失性測試,結(jié)果表明,除了在149℃時,其他各溫度下海泡石鉆井液流變性質(zhì)較好、懸固能力較強(qiáng),高溫高壓濾失量較低。孔隙堵塞器(PPA)實驗中用孔徑10~90μm的滲透性陶瓷盤模擬地層,實驗結(jié)果表明,不含碳酸鈣的海泡石鉆井液不能封堵孔隙,而含碳酸鈣的海泡石鉆井液可在較短時間內(nèi)封堵孔隙,且在高溫下也能保持碳酸鈣顆粒懸浮,使用溫度可高達(dá)193℃。掃描電鏡分析及理想充填理論分析結(jié)果驗證了PPA實驗結(jié)果。
[Abstract]:Through laboratory experiments and theoretical analysis, the sealing performance of sepiolite water-based drilling fluid to different permeable formations before and after adding calcium carbonate at different temperatures and pressures was studied. The feasibility of adding calcium carbonate as plugging agent to sepiolite drilling fluid is demonstrated. The rheological properties and filtration properties of sepiolite drilling fluid were tested under experimental temperature of 27 鈩，

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