The Development and Application of a New Low Density Cement Reducer SXJ-1
-
摘要: 针对超长封固段低压易漏层顶替压力高、固井风险大、易发生漏失和憋泵等问题，研制了新型低密度水泥减轻材料SXJ-1，并进行了现场应用。利用缩聚反应得到了改性环氧树脂并与活性SiO2、固化剂等复配开发出了新型低密度水泥减轻材料SXJ-1；以SXJ-1为减轻材料，根据紧密堆积理论，通过加入早强材料XC-1及具有水化活性的复合增强材料XE60S，配制出密度为1.3~1.5 kg/L的实心微珠低密度水泥浆，评价了该水泥浆的基本性能，分析了压力与搅拌速度对其密度的影响。结果表明，该水泥浆具有良好的基本性能，随压力及搅拌速度变化其密度也会发生变化，但其变化量在0.03 kg/L以内，且性能无明显变化，具有良好的承压能力及抗剪切性能。电镜扫描试验显示，该水泥浆形成的水泥石结构致密，无明显破碎渗水现象，有利于提高水泥石的综合性能。配制的水泥浆已在胜利油田应用30余井次，全部实现单级固井一次返至井口的目的，合格率达到100%。研究认为，新型低密度水泥减轻材料SXJ-1具有良好的承压能力及抗剪切性能，用其配制的实心微珠低密度水泥浆能够解决超长封固段低压易漏层的固井难题。Abstract: Low-pressure formations susceptible to circulation lost in ultra-long cementing intervals are characterized by high displacing pressures,high cementing risks,frequent lost circulation,pump choking and other problems.Under such circumstances,an innovative low-density cement lightening material,SXJ-1,has been developed and applied in the fields.Through condensation polymerization,modified epoxy can be generated and be used in combination with active SiO2,curative agent and other materials to generate low-density cement lightening material,SXJ-1.With SXJ-1 as the lightening material and in accordance with the theory of close packing,setting accelerator XC-1 and the composite reinforcing material,XE60S with hydrate activity have been used to prepare low-density cement slurry with densities of 1.3-1.5 kg/L composed of solid beads.In the subject study,the basic performances of the cement slurry were evaluated along with the impact of pressures and agitation speeds on densities.Assessment tests resulted in outstanding primary performance with the cement slurry.Densities of the slurry may vary with changes in pressures and agitation speeds,but the fluctuations can be controlled within 0.03 kg/L. With no significant changes in performances,Further,these slurries displayed outstanding pressure-bearing and anti-shearing capacities.SEM tests showed that the cement concretions formed by the slurry have high bond integrity,with tight structures showing no obvious cracking or water seepage.Generally speaking,the material can effectively promote overall performances of the cement concretions.Prepared cement slurry has been applied in over 30 wells in Shengli Oilfield.Cement returned to wellhead in one trip with success rate of 100% for all these wells.Research results showed that the innovative low-density cement lightening material,SXJ-1,possesses outstanding pressure-bearing and anti-shearing capacities.The low-density cement slurry composed by solid beads prepared by the lightening material can effectively meet the challenges in cementing operations in low-pressure cementing intervals susceptible to lost circulation.
-
Keywords:
- lightening agent /
- low density /
- cement slurry /
- long cementing interval /
- well cementing
-
-
[1] 罗发强,郭小阳,杨远光.一种新型天然类火山灰低密度水泥浆的实验研究[J].天然气工业,2004,24(2):51-54. LUO Faqiang,GUO Xiaoyang,YANG Yuanguang.Lab study of a new cement slurry with low density from natural volcanic ash[J].Natural Gas Industry,2004,24(2):51-54. [2] 苑铭,刘秀成,李社坤.微硅复合低密度水泥浆的室内研究与应用[J].石油钻探技术,2001,29(5):36-38. YUAN Ming,LIU Xiucheng,LI Shekun.Lab study and application of silicon composite low density cement slurry[J].Petroleum Drilling Techniques,2001,29(5):36-38. [3] 黎泽寒,李早元,刘俊峰,等.低压易漏深井大温差低密度水泥浆体系[J].石油钻采工艺,2012, 34(4):43-46. LI Zehan,LI Zaoyuan,LIU Junfeng,et al.Temperature stable low density slurry for low pressure loss deep wells[J].Oil Drilling Production Technology,2012,34(4):43-46. [4] 李美平,严海兵,程严军,等.高强度低密度水泥体系性能研究[J].钻采工艺,2007,30(3):128-130. LI Meiping,YAN Haibing,CHENG Yanjun,et al.Research on cement system performance with high strength and low density[J].Drilling Production Technology,2007,30(3):128-130. [5] 顾军,尹会存,高德利,等.泡沫水泥稳定性研究[J].油田化学,2004,21(4):307-309. GU Jun,YIN Huicun,GAO Deli,et al.A study on foam-admixtured oil well cement[J].Oilfield Chemistry,2004,21(4):307-309. [6] 应建成.新型泡沫水泥浆体系在胜利油田莱州湾区块的应用[J].钻采工艺,2009,32(6):113-115. YING Jiancheng.Application of new type of foam cement slurry system in Shengli Oilfield[J].Drilling Production Technology,2009,32(6):113-115. [7] 张宏军.中空玻璃微球超低密度水泥浆体系评价与应用[J].石油钻采工艺,2011,33(6):41-44. ZHANG Hongjun.Hollow glass particles super low density slurry evaluation and application[J].Oil Drilling Production Technology,2011,33(6):41-44. [8] 李绍晨.高温复合低密度水泥浆的研究与应用[J].钻井液与完井液,2011,28(2):92-94. LI Shaochen.Research and application of high temperature and low density cement slurry[J].Drilling Fluid Completion Fluid,2011,28(2):92-94. [9] 桑来玉,张红卫.漂珠低密度水泥浆性能的影响因素分析研究[J].西部探矿工程,2008,20(9):91-94. SANG Laiyu,ZHANG Hongwei.Analytic study on influencing factors of microsphere low density cement slurry performance[J].West-China Exploration Engineering,2008,20(9):91-94. [10] 冯克满,朱江林,王同友,等.颗粒级配技术的超高密度水泥浆体系研究[J].长江大学学报(自然科学版),2010,7(2):54-57. FENG Keman,ZHU Jianglin,WANG Tongyou,et al.Ultrahigh high density slurry system based on grain composition[J].Journal of Yangtze University (Natural Science Edition),2010,7(2):54-57. [11] 黄柏宗.紧密堆积理论优化的固井材料和工艺体系[J].钻井液与完井液,2001,18(6):1-9. HUANG Baizong.New cementing materials and technique developed on the concept of high packing density[J].Drilling Fluid Completion Fluid,2001,18(6):1-9. -
期刊类型引用(13)
1. 朱连望，殷志明，田得强，刘俊博，杜威，苗典远，张帅. 极地冷海井控应急救援关键技术和装备探讨. 石化技术. 2025(02): 88-90 . 
百度学术
2. 马金龙，李继丰，刘惠惠. 俄罗斯北极陆上钻井技术挑战与关键技术. 采油工程. 2023(01): 54-59+85-86 . 百度学术
3. 范西哲，李晓，吴永川，张居贵，楼一珊，刘善勇，朱亮. 北极永冻区钻井地层压力预测方法. 天然气工业. 2022(03): 99-105 . 百度学术
4. 王磊，胡志强，柯珂，张辉，李莅临，闫莉. 极地冷海浅层天然气水合物地层声学特性模拟实验研究. 中国海上油气. 2022(04): 218-224 . 百度学术
5. 刘浩亚，鲍洪志，刘亚青，何青水，胡志强，金鑫. 改性高铝水泥浆的负温硬化性能及其增强机制. 石油钻探技术. 2021(02): 54-60 . 本站查看
6. 周晓晖，苏义脑，牛成成，程远方，魏佳. 保护冻土层的真空隔热套管性能试验与数值模拟研究. 石油钻探技术. 2021(03): 21-26 . 本站查看
7. 鲍洪志，孙元伟，邹德一，牛成成. 含寄生管和中心管的套管隔热效果影响因素研究. 石油钻探技术. 2021(03): 42-47 . 本站查看
8. 路保平，侯绪田，柯珂. 中国石化极地冷海钻井技术研究进展与发展建议. 石油钻探技术. 2021(03): 1-10 . 本站查看
9. 陈远鹏，王志远，孙宝江，陈野，郑凯波. 极地钻井关键设备橡胶密封材料的优选. 石油钻探技术. 2020(01): 54-60 . 本站查看
10. 王建伟，袁继胜，李晓维，孟普伟，蒋毅. 北极地区低温防气窜固井技术研究与应用. 中外能源. 2020(09): 56-59 . 百度学术
11. 曾祥禹. 国内外钻井液技术进展及对钻井液的有关认识. 西部探矿工程. 2020(10): 75-76 . 百度学术
12. 朱亮，范西哲，李军伟，邹和均，楼一珊，李忠慧. 寒带海域永冻层的力学特性对油气钻井的挑战. 天然气工业. 2020(11): 110-119 . 百度学术
13. 刘浩亚，赵卫，李燕，豆宁辉，周朝. 负温早强水泥浆体系的室内实验. 石油钻采工艺. 2019(03): 294-300 . 百度学术
其他类型引用(10)
计量
- 文章访问数: 7933
- HTML全文浏览量: 101
- PDF下载量: 6671
- 被引次数: 23
下载:
