控压固井技术在B304井的应用

Application of controlled pressure well cementation technology in B304 well

B304井是一口预探井,在钻井过程中发现了较好的油气显示,为了保证该井固井施工顺利,并确保固井质量合格,通过冲洗液性能的改进、加重隔离液体系的优选、防窜水泥浆体系的筛选等制定了该井的控压固井技术方案,较好地解决了该井"既涌又漏"而造成的固井施工液柱密度调整窗口小、井壁油污清洗困难和水泥浆顶替效率低的难题,确保了该井固井施工安全和固井质量。

B304 is wildcat well,better oil and gas show existed in the drilling process.In order to ensure the smooth cementing construction and qualified quality,we improved the washing fluid performance,increased the space fluid system optimization, screened anti - channeling cement slurry system,consulted well cementing technical materials with flush and leakage, formed controlled pressure well cementation,which better solved the problem of small liquid column density adjusment widow size,difficult well face oil stain cleaning and low cement slurry displace efficiency caused in cementing construction and ensured the safe cementing construction and qualified cementation quality.