| 沁水盆地岩性交替井绒囊钻井液实践 |
| |
| 引用本文： | 闫立飞,申瑞臣,袁光杰,夏焱,刘兆利,王武.沁水盆地岩性交替井绒囊钻井液实践[J].煤田地质与勘探,2016,44(1):137-140. |
| |
| 作者姓名： | 闫立飞 申瑞臣 袁光杰 夏焱 刘兆利 王武 |
| |
| 基金项目： | 国家科技重大专项课题（2011ZX05036-003） |
| |
| 摘 要： | 为有效解决沁水盆地煤层气井因岩性变化快而引发的漏失、坍塌、掉块等情况，通过室内研究及现场应用，采用绒囊钻井液能够有效解决上述问题。MBS26-11防塌试验井和MBS24-5防漏堵漏试验井钻遇地层多而复杂，邻井坍塌、漏失严重。MBS26-11井二开采用绒囊钻井液，密度为0.95~1.05 g/cm3，黏度为35~38 s，平均机械钻速10.79 m/h，比邻井钻速提高9.2%。钻进过程中无掉块、卡钻现象，顺利完钻。MBS24-5井一开采用膨润土泥浆，漏失严重，漏失速率达6.95 m3/h，采用绒囊钻井液后漏失速率为1.68 m3/h。二开仍采用绒囊钻井液，密度保持0.93~0.98 g/cm3，漏斗黏度在38 s以上，塑性黏度6~14 mPa·s，动切力3.00~6.64 YP/Pa，动塑比保持在0.43~1.66Pa/mPa·s。平均机械钻速5.6 m/h。
|
| 关 键 词： | 沁水盆地 煤层气 岩性交替 钻井液 绒囊 防漏堵漏 防塌 |
| 收稿时间： | 2014-10-15 |
Application of fuzzy-ball drilling fluid in alternating lithology well of Qinshui Basin |
| |
| Abstract: | According to the experiments and applications, it was proved that the Fuzzy-ball drilling fluid can effectively solve the leakoff, block and collapses induced by quickly changed lithology. MBS26-11 and MBS24-5 were two directional production wells in Qinshui Basin. The drilled layers were many and complex. And the lithology was alternated frequently. And in the second interval of MBS26-11, the clay-free fuzzy ball drilling fluid was used. The density covers from 0.95~1.05 g/cm3. The viscosity was from 35 to 38 seconds. The average ROP was 10.79 m/h which was 9.2% more than adjacent well. In the first interval of MBS24-5, by applying bentonite drilling fluid, the leakoff was severe and the loss rate was 6.95m3/h. Then, by using fuzzy-ball drilling fluid, the loss rate was controlled within 1.68m3/h. In the second interval, the clay-free fuzzy ball drilling fluid was also applied. The density of drilling fluid was 0.93 g/cm3 to 0.98 g/cm3 with the viscosity of above 38 seconds, the plastic viscosity of 6 to 14mPa·s, a yield value of 3.00 to 6.64YP/Pa and a ratio of dynamic to plastic viscosity of 0.43~1.66Pa/mPa·s. The average ROP was 5.6 m/h. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《煤田地质与勘探》浏览原始摘要信息 |
| 点击此处可从《煤田地质与勘探》下载免费的PDF全文 |
|
