泽74-1X井尾管固井技术

LINER CEMENTING TECHNOLOGY IN WELL ZE 74-1X

钟福海 范先祥 宋振泽 陆兆裕

Zhong Fuhai Fan Xianxiang Song Zhenze Lu Zhaoyu

华北石油管理局固井工程技术处, 河北任丘 062552

Cementing Engineering Department, Hubei Petroleum Administration Bureau

泽74-1X井是利用原上部井眼进行侧钻的1口重点评价井,井身剖面为"直增稳降直"五段制定向井。完钻井深3860m,进入潜山5m,最大井斜41.46°,最大井眼曲率11.03(°)/30m,水平位移574.21m。在?215.9mm井眼内下?177.8mm尾管先期完井,尾管实际下深3859.8m,尾管全长1852.49m,属于超长封固段小间隙井下尾管固井范畴。介绍了下套管固井存在的技术难点,针对该技术难点,优选了水泥浆体系,采取了合理的下套管固井措施。该井固井的成功为今后同类井的固井提供了有益的经验。

Well Ze 74 1X is a five sectional directional well s idetracked from the top hole of the original well, and its profile is of "vertical-building-holding-dropping-vertical". It is an important evaluating well, with a drilled depth of 3860m, a maximum inclination of 41.46°, a maximum hole curvature of 11.03(°)/30m, a horizontal displacement of 574.21m, and 5m into the buried hill. In the ?215.9mm hole, ?177.8mm liner is run to 3859.8m, and the liner string is as long as 1852.49m, which may be classified as slim hole liner cementing of ultra long isolation section. Technical difficulties in liner cementing are presented, and in accordance with these difficulties, optimized cement slurry systems are selected, and proper techniques are applied. The success of this well offers beneficial experience for cementing such wells in the future.

10.3969/j.issn.1000-7393.2002.04.004