Sanjel Energy Services has a diverse and comprehensive line of products to deliver the desired well integrity for any type of cementing application in the WCSB. With a full suite of both standard and highly specialized slurries, we work with you to understand your challenges and deliver the unique solutions and options for your situation and budget, be it low, mid-range or high-end.
Using sophisticated laboratory equipment, all of our blends are tested under downhole conditions to ensure optimal performance. With the proven success of our innovative and solutions focused engineered products, Sanjel Energy Services' aims to always exceed your expectations.
Sanjel Energy’s cement blends are grouped by common technology or common well applications to provide the best solution for any challenge.
Sanjel Energy utilizes all types of base cements to provide the best performance possible while maintaining quality and consistency.
Mixtures of flyash and cement have been very standard but are currently being optimized to provide unique benefits in today’s horizontal wellbores.
Thermally stable cement blends for use in high temperature wells. These may be deep unconventional shale wells or shallow oil sands wells utilizing steam injection for oil production. Mixes may also contain performance attributes of other families such as flexible or expansive.
Sanjel Energy has three distinct families of Thermal Cements: Thermal 40, Proteus, & THERMAmix.
- Segments of any well which will experience temperatures over 115°C (240°F) at any point in the life of the well
- Thermal Cements can be thermally stimulated up to a well temperature of 360°C (680°F)
- Areas in which regulations state a thermal cement must be used
- Contains silica flour, typically either a 200 or 325 mesh grade
- Concentration of silica flour may vary from 35-45% depending on the purity of the silica and the well application
- SLW blends contain hollow beads to reduce density while maintaining strength and well integrity
- EXP and PRO blends are thixotropic meaning they will quickly gel up upon becoming static in the well to prevent losses to the formation and resist formation fluid or gas invasion
- Eliminates strength retrogression at high temperatures
- Maintains low permeability throughout well life
- Thixotropic blends reduce lost circulation and gas migration
- EXP and PRO blends contain expansion agents to improve bonds in the annulus
Blends designed to ensure well integrity over surface formations and groundwater sources. We have a variety of density and economic choices for downhole performance and to reduce the time the drilling rig is waiting on the cement.
- Wellbores that cannot withstand the hydrostatic pressure of conventional high density surface cements
- Wells where a shorter wait on cement time is desired
- Wells where shallow fluids or gas present a risk to the surface wellbore integrity
- Lower density than typical surface cements
- Variable density blends to produce affect wait on cement time, cost or hydrostatic pressure
- Compatible with fluid loss and free water additives for enhanced performance
- Improved well integrity
- Critical intervals less than 30 minutes even at low temperatures
- Lower density slurry options
- Wait on cement time is comparable or shorter to conventional Class G cements Higher yields compared to traditional surface cements helps to reduce cost
Lightweight cements utilizing specialized chemistry and low-density cementing materials that are utilized to lower the hydrostatic pressure in wells with long cement columns or weak formations at any temperature.
- Typically intermediate or production casing covering potential lost circulation zones
- Wellbores suited to economic fill cements
- Wells where a stage tool could compromise wellbore integrity
- No hollow spheres or bubbles that are susceptible to crushing under pressure
- Variable densities to ensure lead cement correctly fits in recommended density hierarchy
- Different cement bases to achieve desired compressive strength
- Ability to pair with a number of lost circulation materials to avoid lost circulation
- Lowers the hydrostatic pressure in the wellbore
- Eliminates the need for stage tools, saving time and cost
- Higher yield reduces cementing costs
- Meets or exceeds regulatory requirements
- Safer and simpler operation compared to foam cementing operation
Ultra-lightweight cements that contain glass or ceramic beads to reduce density to that near or below water while still ensuring well integrity.
- Production and intermediate casing strings across weak formations
- Used when hydrostatic pressures must be kept to a minimum
- Higher compressive strength than typical low density blends using extenders
- Simplified alternative to foam cementing
- Bubbles or ceramic spheres have various pressure ratings depending on expected wellbore pressure
- High solids content leads to low permeability, good compressive and tensile strength development
- Fluid loss and free water additives can be incorporated as needed
- Able to place longer columns of cement, eliminating the need for stage tools
- Designed to meet or exceed applicable regulatory requirements
- Good mechanical properties provide integrity before, during and after well completion stresses
- Safer and simpler operation compared to energized foam cementing
High performance blends created with the total well life in mind addressing both the short and long-term risks to the cement sheath. Contains customized additives to protect and isolate the producing zones in the well.
- Tail cements on intermediate and production casings
- Regions with a history of gas migration
- Casings that experience multistage fracturing treatments
- Protection from gas migration though optimizing solids volume fraction, critical interval and controlling slurry fluid properties
- Contain a mixture of cementing products to improve the mechanical properties to withstand wellbore stresses
- Lightweight (LW) options utilize performance cementing products to create high solid volume fraction slurries
- Slurry properties such as fluid loss, free water and static gel strength are enhanced to control gas migration
- Low density options for weak or under-pressured zones
- PRODUCTIONmix blends have the option to contain expansion additives to ensure a superior bond in the producing zone
Cement blends that exhibit post set expansion. After this cement has set, it will continue to react over a number of days and weeks to expand in the wellbore to improve the overall zonal isolation. Blends are available for any temperature or application.
- Wells with potential for gas migration or surface casing vent flows
- Acid gas injection wells
- Shallow wells prone to lost circulation
- Remedial situations with high formation feed rates
- All blends contain set expansion technology relevant to their intended applications and temperature ranges
- Low permeability to resist gas migration and acid gas corrosion
- Expands after setting to improve isolation between formations
- Short critical interval limits the chance of gas migration
- Thixotropic at low temperatures to reduce lost circulation
Microfine and Thixotropic cement designs to successfully repair or abandon wells regardless of feed rates or temperatures.
- Cements which are ideal for surface casing vent flow and gas migration repairs
- Casing corrosion, leaking casing collars, or any similar problem
- Low feed rates
- Particle size: 90% of the cement particles are smaller than 15 microns
- Low viscosity (approximately 35 cP)
- Density can be changed to manipulate slurry properties for specific applications
- Controlled particle size distribution that aids in controlling viscosity and flow properties, enabling the slurry to penetrate into very small channels in the formation
- Low permeability cement prevents gas from migrating through
- Build compressive strength quickly to prevent channeling to occur in transition phase