库车山前巨厚盐膏层提速技术探索与应用

发布时间：2018-01-28 23:21

本文关键词： 盐膏层垂直钻井油基钻井液机械钻速　出处：《钻采工艺》2017年01期 　论文类型：期刊论文

【摘要】：库车山前是塔里木油田增储上产的重点区域,但该地区深部巨厚盐膏层工程地质特征复杂,强度软硬交替,井斜难以控制,一直制约着该区钻井速度。为此,塔里木油田开展了库车山前巨厚盐膏层钻井提速增效的探索与实践,打破Power-V垂直钻井工具不适用于盐膏层钻进的固有思维,率先将垂直钻井工具、油基钻井液、高效PDC钻头等技术工艺进行集成配套并试验,解决了库车山前巨厚盐膏层防斜打快的难题。试验表明,深部盐膏层使用油基钻井液配合Power-V垂直钻井工具钻进能有效控制井斜角,大幅度提高机械钻速,缩短钻井周期。该技术的成功应用对国内外同类油气田钻井提速具有重要的借鉴意义。
[Abstract]:The front of Kuqa Mountain is the key area of increasing reservoir and production in Tarim Oilfield, but the engineering geological characteristics of the deep thick salt and gypsum layer in this area are complex, the intensity is alternating between soft and hard, the well deviation is difficult to control, which has been restricting the drilling speed in this area. In Tarim Oilfield, the exploration and practice of increasing the speed and efficiency of drilling in the huge thick salt layer in front of Kuqa Mountain has been carried out, which breaks the inherent thinking that Power-V vertical drilling tool is not suitable for drilling in salt paste formation, and takes the lead in vertical drilling tool. Oil based drilling fluid and high efficiency PDC bit were integrated and tested to solve the problem of quick slanting prevention in the huge thick salt paste in front of Kuqa Mountain. Drilling with oil base drilling fluid and Power-V vertical drilling tool in deep salt paste can effectively control the angle of well and improve the drilling speed greatly. The successful application of this technology is of great significance for improving drilling speed in similar oil and gas fields at home and abroad.
【作者单位】：中国石油大学石油工程学院·华东;中国石油塔里木油田分公司;
【分类号】：TE24
【正文快照】： 库车山前深部巨厚盐膏层钻井过程中防斜和强化钻井参数打快之间的矛盾突出,导致机械钻速低、周期长[1],由于国内外不同区域、不同环境下形成的盐膏层差异极大,可参考性有限,且同一口井中盐膏层不均质性严重,因此盐膏层的钻井提速面临着较大困难[2-5]。通过对库车山前巨厚盐膏

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