Submit an Article
Become a reviewer
N. I. Nikolaev, Lyu Khaoya (2017) Results of cement-to-rock contact study. Journal of Mining Institute. Vol 226. p. 428. DOI: 10.25515/pmi.2017.4.428
NikolaevN. I., & KhaoyaL. (2017). Results of cement-to-rock contact study. Journal of Mining Institute, 226, 428.

Results of cement-to-rock contact study

N. I. Nikolaev1
Lyu Khaoya2
  • 1 — Saint-Petersburg Mining University
  • 2 — Jilin University
Date submitted:
Date published:


The paper focuses on the problems of oil and gas well cementation. It has been established that the main reason why formation fluids leak behind the casing is due to poor isolation of the annulus caused by incomplete cleaning of the filter cake, which results in weak or absent adhesion between the cement and the rock. The authors demonstrate that adding polymer modifier GM-II to the spacer fluid strengthens the cement-to-rock contact by several times. Moreover, mixing spacer with cement slurry does not degrade such important properties as spreadability and consistency of the latter. The paper contains investigation results on the content of polymer spacers that improve cementation quality of oil and gas wells. Spectral infrared and X-ray analysis allowed to define the impact of phase composition and mineral structure of the system «cement stone-filter cake-formation rock» on improving leak tightness of the annulus. Electron microscopic study showed that the use of polymer spacers facilitates formation of felted net-like structures between hydrated minerals. The composition of these structures, binding cement grains and clay minerals, has been studied by means of energy dispersive X-ray microanalysis. Obtained results allow to come to the conclusion that these structures mostly consist of hydrated calcium silicate (more than 77% by mass), which agrees well with the findings of infrared and X-ray analysis. Pilot tests, performed at the Shengli oil field in China, have confirmed efficiency of developed spacer fluids.

Go to volume

Similar articles

Determination of parameters of the underground inclined coal seam mining in Quang Ninh basin under protected objects on the surface
2017 Le Van Khau
Challenges and trends of quality management in the context of industrial and mineral resources economy
2017 V. P. Semenov, Yu. I. Mikhailov
Application of electronic learning tools for training of specialists in the field of information technologies for enterprises of mineral resources sector
2017 E. V. Katuntsov, Ya. Kultan, A. B. Makhovikov