田军, 刘文堂, 李旭东, 刘云飞, 郭建华. 快速滤失固结堵漏材料ZYSD的研制及应用[J]. 石油钻探技术, 2018, 46(1): 49-54. DOI: 10.11911/syztjs.2018011
引用本文: 田军, 刘文堂, 李旭东, 刘云飞, 郭建华. 快速滤失固结堵漏材料ZYSD的研制及应用[J]. 石油钻探技术, 2018, 46(1): 49-54. DOI: 10.11911/syztjs.2018011
TIAN Jun, LIUWentang, LI Xudong, LIU Yunfei, GUO Jianhua. Development and Application of Rapid Filtration and Consolidation Lost Circulation Material ZYSD[J]. Petroleum Drilling Techniques, 2018, 46(1): 49-54. DOI: 10.11911/syztjs.2018011
Citation: TIAN Jun, LIUWentang, LI Xudong, LIU Yunfei, GUO Jianhua. Development and Application of Rapid Filtration and Consolidation Lost Circulation Material ZYSD[J]. Petroleum Drilling Techniques, 2018, 46(1): 49-54. DOI: 10.11911/syztjs.2018011

快速滤失固结堵漏材料ZYSD的研制及应用

Development and Application of Rapid Filtration and Consolidation Lost Circulation Material ZYSD

  • 摘要: 裂缝性漏失的漏失通道复杂且诱导敏感性强,采用常规桥塞堵漏材料堵漏,由于堵漏材料的粒径难以与裂缝尺寸相匹配,堵漏成功率低,且易发生重复漏失,而采用水泥浆堵漏,不但水泥浆驻留性差且存在安全风险。为此,根据"快速滤失驻留+纤维成网封堵+胶凝固化"的堵漏思路,选用滤失材料、纤维成网材料及胶凝材料复配了适用于裂缝性漏失的快速滤失固结堵漏材料ZYSD。室内性能评价表明:ZYSD堵漏浆的悬浮稳定性好,1 min析水率小于5%;滤失速度快,在0.69 MPa压力下全滤失时间为10~15 s;封堵能力强,在缝宽5.0~10.0 mm裂缝中形成封堵层的承压能力达18.5 MPa。ZYSD堵漏材料在鄂北、延长、冀东、中原和涪陵等油气田应用了32井次,一次堵漏成功率达87.5%,且未再发生重复漏失。这表明ZYSD堵漏材料可以有效解决裂缝性漏失堵漏成功率低、堵漏有效期短,易发生重复漏失的问题。

     

    Abstract: Channels in fractured leakage are complex and sensitive to induction.If conventional bridge plug lost circulation material is used,its particle size is hard to match with the fracture size,so the success rate of plugging is low and repeated leakage is likely to occur.If cement slurry is used,besides poor retention performance,it may also cause safety risk.Therefore,based on the principle of "rapid filtration and retention+fiber mesh plugging+gel solidification",filtration material,fiber mesh material and gel solidification material were prepared to fabricate the rapid filtration and consolidation lost circulation material ZYSD that is suitable for fractured leakage.Lab performance evaluation tests showed that the suspending stability of ZYSD plugging slurry was good,and the syneresis rate in 1min was less than 5%.Moreover,the filtration rate was fast with the total filtration time of 10-15 s under the pressure of 0.69 MPa and the plugging capacity was good with the bearing pressure of the formed plugged zone in 5-10 mm fractures up to 18.5 MPa.The lost circulation material ZYSD was used in 32 wells in North Ordos,Yanchang,Jidong,Zhongyuan,Fuling and other oil/gas fields.The one-time plugging success rate was up to 87.5% and no repeated leakage occurred.The successful applications indicated that the lost circulation material ZYSD could effectively solve the problems of low plugging success rate,brief effective plugging period and repeated leakage in fractured leakage.

     

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