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储气库固井用油井水泥增韧材料的优选与应用

王秀玲,  任文亮,  周战云,  刘卫军,  孙丽,  侯平

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文章导航 > 钻井液与完井液  > 2017 >  34(3): 89-93
王秀玲, 任文亮, 周战云, 刘卫军, 孙丽, 侯平. 储气库固井用油井水泥增韧材料的优选与应用[J]. 钻井液与完井液, 2017, 34(3): 89-93. doi: 10.3969/j.issn.1001-5620.2017.03.018
引用本文: 王秀玲, 任文亮, 周战云, 刘卫军, 孙丽, 侯平. 储气库固井用油井水泥增韧材料的优选与应用[J]. 钻井液与完井液, 2017, 34(3): 89-93. doi: 10.3969/j.issn.1001-5620.2017.03.018
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WANG Xiuling, REN Wenliang, ZHOU Zhanyun, LIU Weijun, SUN Li, HOU Ping. Selection and Application of Toughening Agent Used in Cementing Gas Storage Well[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 89-93. doi: 10.3969/j.issn.1001-5620.2017.03.018
Citation: WANG Xiuling, REN Wenliang, ZHOU Zhanyun, LIU Weijun, SUN Li, HOU Ping. Selection and Application of Toughening Agent Used in Cementing Gas Storage Well[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(3): 89-93. doi: 10.3969/j.issn.1001-5620.2017.03.018
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储气库固井用油井水泥增韧材料的优选与应用

doi: 10.3969/j.issn.1001-5620.2017.03.018

  • 中石化中原石油工程有限公司固井公司, 河南濮阳 457001

基金项目: 

中国石油化工集团公司研究项目"枯竭砂岩气田改建储气库钻完井关键技术研究"（JP14028）。

详细信息
    作者简介:

    王秀玲,高级工程师,1973年生,1994年毕业于西北大学,现在主要从事固井水泥浆体系的研究工作。电话13939361820;E-mail:13939361820@163.com。

  • 中图分类号: TE256

Selection and Application of Toughening Agent Used in Cementing Gas Storage Well

  • Cementing Branch of Zhongyuan Petroleum Engineering Ltd., Sinopec, Puyang, Henan 457001

    摘要
  • 摘要: 针对储气库生产对水泥石韧性的特殊要求，优选了粒径为0.15~0.18 mm经表面改性的橡胶粉作为弹性材料，聚丙烯纤维作为增韧材料，通过实验确定弹性材料和增韧材料的最佳加量分别为3.0%和0.1%，并配合使用PVA胶乳类降失水剂，改善水泥石脆性，提高耐冲击能力及抗折能力，满足水泥环频繁高压注采条件下的长期密封性。综合评价了增韧水泥石的弹性模量、抗折强度、抗压及胶结强度、渗透率及应力条件下水泥环密封性，与净浆水泥石相比，弹性模量降低了43%，抗折强度增加了84.6%，渗透率小于0.05 mD，能够满足35 MPa压力、35℃温差下的水泥环密封性要求，适用于储气库固井。

     

    Abstract: A toughness-enhanced cement slurry was formulated to cement gas storage wells which have special requirements for the toughness of set cement. A surface modified rubber powder (particle size between 0.15 mm and 0.18 mm) and a polypropylene fiber were used in the cement slurry as an elastic enhancer and a toughening agent, respectively. The optimum concentrations of the elastic enhancer and the toughening agent were determined to be 3.0% and 0.1%, respectively, through laboratory experiments. PVA latex was used as a filter loss reducer to minimize the brittleness of the set cement, improving its impact resistance and antibreaking performance, and satisfying the needs of cement sheath for long-term airtightness under frequent high-pressure injection and production. Laboratory experiments were done to evaluate the toughness-enhanced set cement for its elastic modulus, anti-breaking strength, compressive strength, bonding strength, permeability, and the airtightness of the cement sheath under stress. Compared with the set cement formed with base cement slurry, the elastic modulus of the toughness-enhanced cement slurry was reduced by 43%, the anti-breaking strength was increased by 118%, and the permeability of the set cement was less than 0.05 mD. These data indicated that the toughness-enhanced cement slurry was able to satisfy the needs for airtightness of the cement sheath under 35 MPa and 35℃ temperature difference, suitable for cementing gas storage wells.

     

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  • 收稿日期:  2016-12-05
  • 刊出日期:  2017-05-31

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