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self-healing cement system, the composition of which is designed so that upon contact with hydrocarbons, there is volumetric expansion of the cement in the contact point. It allows successfully addressing issues such as micro-cracks in the cement, which occur as it cures long-term, caused by changes in stresses within the cement, and micro-gaps resulting from cement shrinkage and/or short-term column impacts - squeezes, drilling impact loads, perforation, Hydraulic Fracturing.
SHC
SHC
Chemical description
SHC (SELF-HEALING CEMENT SYSTEM) REPRESENTS A MULTICOMPONENT MIXTURE OF MATERIALS, PREDOMINANTLY OF INORGANIC ORIGIN.
Physical properties
Appearance: powder, ranging from grey to dark grey color
Solubility in water: partial
Solubility in water: partial
Properties of cement stone
Density from 1.4 to 2.1 g/cm3
Compressive strength after 24 hours from 5 to 25 MPa depending on density and temperature
Setting time – adjustable
Young's Modulus: 1.5-7 GPa
Self-healing ability upon contact with hydrocarbons
Compressive strength after 24 hours from 5 to 25 MPa depending on density and temperature
Setting time – adjustable
Young's Modulus: 1.5-7 GPa
Self-healing ability upon contact with hydrocarbons
Advantages
- Self-heals in the presence of hydrocarbons without compromising strength properties and maintains integrity in the annular space;
- Enhances adhesive properties and imparts elasticity to the cement stone, low Young's Modulus;
- Eliminates microgaps (up to 1000 microns) in cement-column/cement-rock;
- Prevents annular hydrocarbon crossflow (oil, oil, gas, gas condensate);
- Withstands multiple cyclic and temperature loads (including operation, pressurization, hydraulic fracturing, perforation during well completion without damaging the cement stone);
- Minimizes expenses on repair and insulation works and loss of profit due to production shutdown;
- Increases the well's service life and its inter-repair period.
Usage limitations
Usage limitations: working temperature range from 5°C to 150°C.
Packaging and storage conditions
The self-healing cement system (SHC) is packaged in flexible containers (МКР) weighing up to 1 ton, equipped with a double polyethylene liner. The product should be stored in a dry place, away from moisture, open flames, and heating devices. After the bag has been opened, it should be tightly sealed to prevent product damage. The product has a shelf life of at least 12 months.
Head Office:
11A Building 1, Novinskiy Boulevard,
Moscow, 121099, Russia
Production:
Building 4, 23rd km of the Federal Highway
Tyumen — Tobolsk — Khanty-Mansiysk,
Tyumen, 625512, Russia
+7 (495) 780-32-31
+7 (964) 789-26-80
11A Building 1, Novinskiy Boulevard,
Moscow, 121099, Russia
Production:
Building 4, 23rd km of the Federal Highway
Tyumen — Tobolsk — Khanty-Mansiysk,
Tyumen, 625512, Russia
+7 (495) 780-32-31
+7 (964) 789-26-80
LLC NEFTESERVIS © 2023