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A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of oil field well repair, in particular to a cement paste system for plugging casing coupling gap leakage for petroleum well repair. The cement paste system consists of dry powder and water, wherein the dry powder comprises the following components in parts by mass: 100 parts of superfine cement dry powder, 3 parts of elastic particle dry powder and 1 part of plastic particles; the three components of the dry powder are uniformly mixed and stirred and then blended with water to form a paste product with the density of 1.62 g/cm<3>. According to theinvention, the elastic material and the plastic material are gathered in the threaded gap of leakage to deform, extend, fill and compact; the requirement for leakage pressure test of the threaded gapof the plugged casing coupling is met, the inner diameter of the casing is not changed after leakage repair of the threaded gap of the plugged casing, through reasonable proportion, cement paste has good blending performance, field construction is facilitated, the plugging effect is good, and the pressure test of the leakage well section of the threaded gap of the plugged casing coupling can meetthe design requirement after plug drilling.
本发明涉及油田修井技术领域，特别涉及一种石油修井用封堵套管接箍缝隙渗漏的水泥浆体系。该水泥浆体系由干粉剂和水组成，干粉剂的各组成成分及其质量份数为：超细水泥干粉100份，弹性颗粒干粉3份，塑性颗粒1份；将干粉剂的三种成分混拌均匀后与水调配成密度为1.62克/立方厘米的浆体形成本产品。本发明实现了弹性材料和塑性材料集聚在渗漏螺纹的缝隙内变形伸展填满压实，满足封堵套管接箍螺纹缝隙渗漏试压的要求，封堵套管螺纹缝隙渗漏修补后套管内径不变，通过合理的比例配比，使水泥浆具有良好的调配性能，利于现场施工，封堵效果好，钻塞后对封堵套管接箍螺纹缝隙渗漏井段试压能够达到设计要求。
The invention relates to the technical field of oil field well repair, in particular to a cement paste system for plugging casing coupling gap leakage for petroleum well repair. The cement paste system consists of dry powder and water, wherein the dry powder comprises the following components in parts by mass: 100 parts of superfine cement dry powder, 3 parts of elastic particle dry powder and 1 part of plastic particles; the three components of the dry powder are uniformly mixed and stirred and then blended with water to form a paste product with the density of 1.62 g/cm<3>. According to theinvention, the elastic material and the plastic material are gathered in the threaded gap of leakage to deform, extend, fill and compact; the requirement for leakage pressure test of the threaded gapof the plugged casing coupling is met, the inner diameter of the casing is not changed after leakage repair of the threaded gap of the plugged casing, through reasonable proportion, cement paste has good blending performance, field construction is facilitated, the plugging effect is good, and the pressure test of the leakage well section of the threaded gap of the plugged casing coupling can meetthe design requirement after plug drilling.
本发明涉及油田修井技术领域，特别涉及一种石油修井用封堵套管接箍缝隙渗漏的水泥浆体系。该水泥浆体系由干粉剂和水组成，干粉剂的各组成成分及其质量份数为：超细水泥干粉100份，弹性颗粒干粉3份，塑性颗粒1份；将干粉剂的三种成分混拌均匀后与水调配成密度为1.62克/立方厘米的浆体形成本产品。本发明实现了弹性材料和塑性材料集聚在渗漏螺纹的缝隙内变形伸展填满压实，满足封堵套管接箍螺纹缝隙渗漏试压的要求，封堵套管螺纹缝隙渗漏修补后套管内径不变，通过合理的比例配比，使水泥浆具有良好的调配性能，利于现场施工，封堵效果好，钻塞后对封堵套管接箍螺纹缝隙渗漏井段试压能够达到设计要求。
Cement paste system for plugging casing coupling gap leakage for petroleum well repair
一种石油修井用封堵套管接箍缝隙渗漏的水泥浆体系
2020-11-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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