Volume 32 Issue 6
Nov.  2015
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LIU Zhentong, SONG Zhiqiang, WANG Jun, GAO Fei, SONG Yuanhong, DANG Donghong, WU Yongchao, YIN Xuan. Application of Sodium Silicate Prepad Fluid in Cementing Heavy Oil Zones in Venezuela[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(6): 96-99. doi: 10.3969/j.issn.1001-5620.2015.06.024
Citation: LIU Zhentong, SONG Zhiqiang, WANG Jun, GAO Fei, SONG Yuanhong, DANG Donghong, WU Yongchao, YIN Xuan. Application of Sodium Silicate Prepad Fluid in Cementing Heavy Oil Zones in Venezuela[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(6): 96-99. doi: 10.3969/j.issn.1001-5620.2015.06.024

Application of Sodium Silicate Prepad Fluid in Cementing Heavy Oil Zones in Venezuela

doi: 10.3969/j.issn.1001-5620.2015.06.024
  • Received Date: 2015-06-20
  • Publish Date: 2015-11-30
  • Viscous oil in the heavy oil zones in Venezuela is buried in shallow depths and the shale caps are unconsolidated.The reservoir formations have low pressure bearing capacity and are full of fractures.Conventional prepad fluids used in previous cementing jobs often resulted in lost circulations, making it difficult for the cement slurries to return to the designed depth.Cleaning of the annular spacing were generally poor during cementing, and cementation of the two interfaces(interface between casing string and cement sheath and the interface between cement sheath and borehole wall) is weak, resulting in annular channeling in thermal recovery and corrosion of uncemented casing string by acid gases such as H2S and CO2.The life of the production well is thus shortened.In field practices, it was found that by adding 25%sodium silicate solution into prepad fluid, lost circulation and discontinuity of cementing were prevented from occurring, the cement slurries in the annular space returned to the designed depth and the cement sheath was intact.Bond strengths of the two interfaces were enhanced.All these contributed to the prevention of casing damage by acid corrosion.The key point in cementing with sodium silicate prepad fluid is to prevent the sodium silicate from contacting with cement slurry, because the contact of the two will inevitably shorten the thickening time of the cement slurry and lead to cementing disasters.

     

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  • 穆龙新,韩国庆,徐宝军. 委内瑞拉奥里诺科重油带地质与油气资源储量[J]. 石油勘探与开发,2009,36(6):784-789. Mu Longxin,Han Guoqing,Xu Baojun.Geology and reserve of the Orinoco heavy oil belt, Venezuela[J].Petroleum Exploration and Development,2009,36(6):784-789.
    杨香艳,郭小阳,杨远光,等. 固井前置冲洗液的研究发展[J]. 西南石油学院学报,2005,28(1):70-74. Yang Xiangyan, Guo Xiaoyang, Yang Yuanguang, et al. The research and development of the well cementation preposition flushing fluid[J]. Journal of Southwest Petroleum Institute,2005,28(1):70-74.
    李友臣,吴旭辉,张轩,等. 固井前置液技术研究[J]. 西部探矿工程,2005,111(增刊):128-129. Li Youchen, Wu Xuhui, Zhang Xuan, et al.Study of cementing pad fluid technology[J].West-China Exploration Engineering,2005,111(S0):128-129.
    范廷秀,郑琦铭,贾付山,等. 固井内置悬浮液研究与应用[J]. 石油钻采工艺, 2007,29(4):92-94. Fan Tingxiu, Zheng Qiming,Jia Fushan,et al.Research on inner suspension and its application to GIF cementing[J].Oil Drilling & Production Technology, 2007,29(4):92-94.
    杨振杰, 马成云, 朱海涛,等. 自修复固井前置液实验研究[J]. 钻井液与完井液,2013,30(2):55-58. Yang Zhenjie, Ma Chengyun, Zhu Haitao, et al. Experimental study of self-healing cementing pad fluid[J]. Drilling Fluid & Completion Fluid,2013,30(2):55-58.
    陈大钧,王雪敏,吴永胜,等.高密度高效冲洗液XM-1[J]. 钻井液与完井液,2015,32(3):70-72. Chen Dajun, Wang Xuemin, Wu Yongsheng, et al.High density flushing fluid XM-1[J].Drilling Fluid & Completion Fluid,2015,32(3):70-72.
    任春宇, 陈大钧.RC型冲洗液性能的室内研究[J].钻井液与完井液,2012,29(6):66-67. Ren Chunyu Chen Dajun. Research on performance of rc flushing fluid[J].Drilling Fluid & Completion Fluid,2012, 29(6):66-67.
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