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S12井是位于伊朗境内Khuzestan省的Y油田开发井之一,构造位置属于中东波斯湾盆地扎格罗斯山前褶皱和阿拉伯地台东缘的过渡带,构造轴向为近南北向的一个大型的长轴背斜。该区块Sarvak油藏埋深3100米左右,采用水平段裸眼完井。81/2″钻头钻至4100m左右完钻,水平段长900m左右,7″尾管下至A点进行注水泥作业。对Y油田区块S12井φ177.8mm生产尾管固井质量进行认真分析,找出可能的影响原因,以提高Y油田区块后续固井质量。
Well S12 is one of the Y well development wells in Khuzestan Province in Iran. It is located in the transition zone between the Zagros mountain fold in the Middle East Persian Gulf basin and the eastern margin of the Arabian platform, and is constructed with a large-scale Long axis anticline. The Sarvak reservoir in this block has a depth of about 3,100 meters and is completed with open-hole horizontal sections. 81/2 “drill drill to about 4100m finished drilling, the horizontal section of about 900m long, 7” tail pipe down to point A for cementing operations. The cementing quality of tail pipe of φ177.8mm production in S12 well of Y Oilfield Block is carefully analyzed to find out the possible reasons to improve the quality of subsequent cementing in Y Oilfield block.