固井工程中的流动问题

SOME PROBLEMS OF FLUID MECHANICS IN WELL CEMENTING IN PETROLEUM ENGINEERING

  • 摘要: 固井是油气井在建过程中的重要工程,一般分下套管和注水泥两个过程. 本文结合作者近年来的研究,着重阐述了钻井液、前置液、水泥浆在环形空间中流动的流体力学问题,包括:高温高压下的水泥浆流变性、偏心环形空间中浆液的流动特性、钻井液-前置液和前置液-水泥浆界面的稳定性等,介绍了国内外学者对这些问题的研究进展,提出了今后应深入研究的问题.

     

    Abstract: Well cementing is an important operation in theconstruction of any oil well. After a section of the steel casing isinserted into the hole, a sequence of cement slurry is pumped down theinside of the tubing and coming back up through the annular gap, and thenallowed to settle in the annulus. Several fluid mechanics problems arediscussed in the present paper, such as, how to determine the mechanicalmodels for describing rheological behavior of cementing slurry at hightemperature and high pressure, the influences of eccentricities on slurryflow, and the stability of the interface between slurry and spacer. This paper briefly reviews the latestinvestigations on fluid mechanics problems, and some importantdirections for future researches are pointed out.

     

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