深部钻进井底冲洗液压力自动控制系统分析研究

Analytical research on automatic control system of bottom hole drilling fluid pressure in deep drilling

摘要:

我国计划施工一口深度为13000 m的地质特深井，意义重大。在深井钻进中，特别是超深井钻进中，如何把井底的钻进工况参数准确及时地传送到地面，进行调节控制，以保证正常钻进和提高钻探技术经济指标，俄罗斯专家提出了组合联系通道。如何控制冲洗液井底压力，以保证钻进安全，防止事故发生，需要有一个自动控制系统，以及如何解决此系统中的信号响应滞后问题，俄罗斯钻探科研人员在这些方面做了大量的工作，取得了一定成果。这些研究成果值得引起我们的注意。

Abstract:

It is planning to drill an extremely deep hole with depth of 13000m in China that has great significance. In deep drilling， particularly in superdeep drilling it is a difficult problem to transfer the bottom hole drilling parameters to the surface in time and correctly and to adjust and control them so that the normal drilling and good technical and economic results can be guaranteed. Russian experts propose a combination link channel and that has definite reference value probably. It is very important to have an automatic control system to solve the problem of how to adjust and control the bottom hole drilling fluid pressure in order to guarantee the normal drilling and prevent accident and how to resolve the response lateness of signal in the link channel. Russian scientists have done a lot of work in these fields and got a definite success and that deserves our attention.