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国外某超深水油田水深1550-1750米,下部完井方式采用OHGP(裸眼砾石充填)、OP-SAS(油井独立筛管)、WI-SAS(水井独立筛管)三种。本文以注水井W-1井为例,重点突出每个完井工序中,完井液的变化位置和物性,阐述在深水完井过程中完井液的选择、特点、用量、注意事项以及压力的控制等要求。深水完井配套技术在海外已经应用较为成熟,完井液体系也已经日趋成熟,本文介绍的体系不仅仅适用于E油田,更是适用于很多深水完井项目中。只是需要在油层保护、井壁控制等方面根据地层岩性、配伍性及当量密度等做出相应的调整。
Some foreign ultra-deepwater oilfields have a depth of 1550-1750 meters. The lower completion methods use OHGP (open hole gravel packing), OP-SAS (oil well independent screen) and WI-SAS (independent well screen). Taking Well W-1 for water injection well as an example, this paper focuses on the changing location and physical properties of completion fluid in each completion process, and expounds the selection, characteristics, dosage, precautions and pressure of completion fluid during deepwater completion Control and other requirements. Completion technology of deepwater completion has been more mature overseas, and completion fluid system has also matured. The system described in this paper is not only applicable to E field, but also applied to many deepwater completion projects. It is only necessary to make corresponding adjustments according to lithology, compatibility and equivalent density in reservoir protection and borehole control.