非开挖穿越工程中泥浆的选用与优化设计

Selecting Optimum Design of Drilling Fluid in Gosing Project

钻井液（或称泥浆）是钻井工程中的“血液”，也是非开挖穿越工程的“血液”。通过钻井液的循环能够将钻井中各部分有机结合在一起，实现安全高效的钻进。随着我国经济的发展和社会的进步，提出的西气东输、川气东输等大型管道建设项目，数目众多的非开挖穿越工程陆续开工。论文从大型非开挖穿越工程实际需要出发，将工程中所选用泥浆的功用、选用原则等方面进行了论述，并结合国内已经施工的一些穿越工程实例，通过现场数据和试验结果分析对比，对大型非开挖穿越工程中泥浆提出了更加合理、高效的选用原则。并对不用工程条件下所使用泥浆的配合比做出了试验性配合比方案，并在工程实践中得到了很好的证明和应用。

Drilling fluid is essential mediator during drilling engineering. Every part of the drilling system can be joined by the circumstance of the drilling fluid and safely and efficiency constructed step by step. There are huge numbers of Cross-over projects which would be taken into construction in the future years with the quickly develop- ment of economy and improvement of society under the background of West-East natural gas transmission and Chuan-East gas transmission Engineering. This paper discusses the function and standard of the selection for Drilling Fluid according to the actual requirement during they Cross-over Project by Trenchless Technology. Then the author put forward to more useful selecting principle adjusted to different types of Cross-over Projects after the analysis of experiment data and the field measured data. In the end the final mix proportion program of drilling fluid was applied into field trenchless technology projects and the results is famous after the optimum designed.