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| 加重钻井液防重晶石沉降技术 | |
| 引用本文： | 林枫,由福昌,王胜翔,杨培龙. 加重钻井液防重晶石沉降技术[J]. 钻井液与完井液, 2015, 32(3): 27-29. DOI: 10.3696/j.issn.1001-5620.2015.03.008 |
| 作者姓名： | 林枫 由福昌 王胜翔 杨培龙 |
| 作者单位： | 1.中国海油伊拉克有限公司, 北京 |
| 摘 要： | 重晶石沉降往往发生在钻井过程中,而在静置过程中由于钻井液凝胶强度的存在,沉降稳定性较好,而一直以来忽视了动态沉降问题。基于以上问题,提出采用老化罐静态沉降测试法和黏度计动态沉降测试法(改进VST法)来综合评价重晶石的沉降情况。并将重晶石的粒径与沉降稳定性的测试方法相结合,寻求出一种重晶石防沉降技术。实验结果表明:在常规重晶石中复配一定量的超细重晶石,能够较大程度地改善重晶石沉降的问题,尤其是重晶石的动态沉降问题,动态密度差由单一常规重晶石加重情况下的0.436 g/cm3下降为0.011 g/cm3,解决了重晶石沉降问题。 |
| 关 键 词： | 加重钻井液 重晶石 动态沉降 超细重晶石 |
| 收稿时间： | 2015-01-18 |
Study on Prevention of Barite Sedimentation in Weighted Drilling Fluids |
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| LIN Feng,YOU Fuchang,WANG Shengxiang,YANG Peilong. Study on Prevention of Barite Sedimentation in Weighted Drilling Fluids[J]. Drilling Fluid & Completion Fluid, 2015, 32(3): 27-29. DOI: 10.3696/j.issn.1001-5620.2015.03.008 | |
| Authors: | LIN Feng YOU Fuchang WANG Shengxiang YANG Peilong |
| Affiliation: | Level 18 of Block B, Kaiheng Mansion, No. 2 Chaoyangmen Nei Dajie, Dongcheng District, Beijing 100010, China |
| Abstract: | Settling of barite has long been a problem in deviated well and extended reach well drilling. A cost effective method for preventing barite settling is developed by combining the methods for barite particle size measurement and sedimentation stability testing. Experiments showed that by adding a certain amount of ultra-fine barite into commonly used drilling fluid barite improved the sedimentation stability, especially the dynamic sedimentation, of the barite, the dynamic density difference decreased from 0.436 g/cm3 for conventional barite only, to 0.011 g/cm3 for the mixed barite, greatly improving the sedimentation stability of barite. |
| Keywords: | Drilling fluid Barite Sedimentation |
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