«Onshore and offshore oil and gas well construction»

Study of various materials influence on cement stone porosity

UDC: 622.245.422
DOI: -

Authors:

¹ National University of Oil and Gas ("Gubkin University"), Moscow, Russia

Keywords: cement stone, porosity, fillers, well cementing, UMSS copolymers, cementing material

Annotation:

Porosity is an important parameter the magnitude and nature of change of which can be used for predicting changes of the structure and insulating properties of developing cement stone. In recent years, few studies have addressed the problem of cement stone porosity. To reduce porosity and improve the insulating properties of developing cement stone, it has been proposed to use, for example, lightweight additives, micro-cement, gypsum and suspensions with increased solids content achieved by optimizing the composition of fillers in the mixture. The authors of the article demonstrate the effect of various fillers and functional additives on the cement stone porosity. Specific examples demonstrate that UMSS copolymers and styrene-butadiene latex do not allow reducing the porosity of cement stone, while the use of micro-fillers and optimization of the dry mix composition by particle size can significantly reduce pore space.

Bibliography:

1. GOST 26450.1-85. Porody gornye. Metod opredeleniya koeffitsienta otkrytoy poristosti zhidkostenasyshcheniem. – Vved. 1986–07–01. – M.: Gosudarstvennyy komitet SSSR po standartam, 1985. – 8 s.
2. Ridha S., Irawan S., Ariwahjoedi B. Strength prediction of Class G oilwell cement during early ages by electrical conductivity // Journal of Petroleum Exploration and Production Technology. – 2013. – Vol. 3, Issue 4. – P. 303–311. – DOI: 10.1007/s13202-013-0075-9
3. Pat. OA12001A, IPC C04B 28/02, E21B 33/13, C04B 28/08. A low-density and low-porosity cementing slurry for oil wells or the like / B. Drochon, A. Garnier. – Application OA1200200033A; Application filed 2000–07–06; Publication 2006–04–18.
4. De Larrard F., Sedran T. Optimization of Ultra-High-Performance Concrete by the Use of Packing Model // Cement and Concrete Research. – 1994. – Vol. 24, Issue 6. – P. 997–1009. – DOI: 10.1016/0008-8846(94)90022-1
5. Impact of Engineered Particle Size Distribution of Ordinary Portland Cement on Slag Supplemented Cement: A Comparative Performance Analysis with Commercial Portland Slag Cement / R.S. Kamble, K.G. Guptha, A.K. Nayak, J. Vengala // The Scientific World Journal. – 2025. – Article Id. 5442750. – 11 p. – DOI: 10.1155/tswj/5442750