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BS区块大斜度井分段压裂工艺研究与应用

Natural Gas and Oil(2013)

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Abstract
大港油田BS85区块储层具有物性差、泥岩含量高、自然产能低等特点,需要通过压裂改造才能获得工业油流。BS19-67井是该区块的一口大斜度井,最大井斜67.69°,为最大限度改造储层,采用套管固井+滑套分段压裂工艺技术分5段进行压裂。由于该区块无准确的地应力方位测试数据,有可能在裂缝方位与井筒方位形成较小夹角,增加了施工难度。因此采用支撑剂段塞工艺、大排量施工等技术保证施工成功率,并在压裂施工过程中采用井下微地震技术对裂缝进行监测,为下步设计优化提供依据。
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Key words
Dagang oilfield,Fracturing,Highly-deviated well,Downhole microseism
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