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靖南区块漏失井固井工艺研究

吴阳,  肖志海,  沈小刚,  郭一兵,  金志轩

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文章导航 > 钻井液与完井液  > 2017 >  34(6): 95-99
吴阳, 肖志海, 沈小刚, 郭一兵, 金志轩. 靖南区块漏失井固井工艺研究[J]. 钻井液与完井液, 2017, 34(6): 95-99. doi: 10.3969/j.issn.1001-5620.2017.06.018
引用本文: 吴阳, 肖志海, 沈小刚, 郭一兵, 金志轩. 靖南区块漏失井固井工艺研究[J]. 钻井液与完井液, 2017, 34(6): 95-99. doi: 10.3969/j.issn.1001-5620.2017.06.018
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WU Yang, XIAO Zhihai, SHEN Xiaogang, GUO Yibing, JIN Zhixuan. Study on Well Cementing Techniques for Wells with Lost Circulation in Jingnan Area[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(6): 95-99. doi: 10.3969/j.issn.1001-5620.2017.06.018
Citation: WU Yang, XIAO Zhihai, SHEN Xiaogang, GUO Yibing, JIN Zhixuan. Study on Well Cementing Techniques for Wells with Lost Circulation in Jingnan Area[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(6): 95-99. doi: 10.3969/j.issn.1001-5620.2017.06.018
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靖南区块漏失井固井工艺研究

doi: 10.3969/j.issn.1001-5620.2017.06.018

  • 川庆钻探工程有限公司长庆固井公司, 陕西榆林 718500

基金项目: 

川庆钻探工程有限公司研究项目“苏里格小套管固井工艺技术推广应用”（CQ2015D-48-4-3）。

详细信息
    作者简介:

    吴阳,毕业于西安石油大学材料工程学院,主要从事固井技术研究工作。电话18591937520;E-mail:xiaozhihai06011@163.com。

  • 中图分类号: TE256.9

Study on Well Cementing Techniques for Wells with Lost Circulation in Jingnan Area

  • CCDC Changqing Cementing Company, Yulin, Shaanxi 710018

    摘要
  • 摘要: 为了提高苏里格气田靖南区块漏失井填充段固井质量，考察了不同堵漏剂对水泥浆性能的影响，研制了一套适合该区块的轻珠堵漏水泥浆体系。首先优选出植物颗粒（A）、纤维混合物QD-2和复合纤维DF-NIN堵漏剂，并通过正交实验可知，3种堵漏剂的质量分数分别按照2%、2%和3%复配堵漏效果最好，水泥石的抗压强度为7.6 MPa。通过堵漏性能评价可知，水泥浆的漏失量大幅度降低，且基本性能均满足固井质量要求。通过对该区块地质特征进行调研，制定出一套新的固井工艺技术，该工艺技术在靖南区块试验8井次，其一界面固井质量合格率均在95%以上，二界面固井质量合格率均在99%以上。这说明轻珠堵漏水泥浆体系及漏失井固井工艺能大幅提升填充段固井质量，最大程度地满足漏失井全井段封固质量的要求。

     

    Abstract: A cementing slurry treated with light weight plastic beads has been developed to improve well cementing job quality of the gravel-packing section of a well in Jingnan block, Sulige gas field. Lost circulation has been frequently encountered in this area, hence different lost circulation materials (LCMs) were studied for their effects on the properties of the cementing slurry developed. Three LCMs, a plant particle (A), a mixed fiber QD-2 and a compound fiber DF-NIN, were studied through orthogonal experiment. It has been found that when the three LCMs were added into cement slurries in concentrations of 2%, 2% and 3% respectively, best performance of lost circulation control can be obtained, and the cement slurry had compressive strength of 7.6 MPa. In laboratory lost circulation test, the volume of slurry lost was greatly reduced, and the basic properties of the cement slurry were able to satisfy the needs of well cementing. A set of well cementing techniques were established based on the investigation of the geological characteristics of the formations. The cement slurry and the techniques developed have been applied in Jingnan area for 8 times, the percent of pass of cementing between cement sheath and casing string was 95%, and this number was 99% for the cementing between cement sheath and borehole wall, demonstrating that the light weight lost circulation control cement slurry is able to greatly improve the quality of cementing job in the gravel-packing section of a well, and satisfy the needs at utmost of sealing a whole well.

     

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出版历程
  • 收稿日期:  2017-07-21
  • 刊出日期:  2017-11-30

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