Drilling Reagent FHLS

Appearance:

• brown powder

• mass fraction of water: no more than 10%

• pH level: within 4-5

• solubility in water: not less than 90%

• liquefaction rate: not less than 40%

• Foaming capacity: no more than 30 ^cm3

Regulation of drilling fluid properties

During drilling, drilling fluid interacts with the rocks being drilled, formation waters, and is exposed to mechanical stress, temperature, pressure, atmospheric air, and precipitation. Internal processes occur within the fluid, including the weakening of electrical charges on the particles and the aging of its components. All this leads to a deterioration in the fluid's properties, and it loses its ability to perform its required functions. Therefore, during drilling, its required properties must be restored and maintained.

Often, alternating rock types in a geological section necessitate modifications to certain drilling fluid functions. Therefore, if it's possible to avoid changing the fluid, its properties are adjusted during drilling as the appropriate interval is approached.

Thus, the need to regulate the properties of drilling fluid arises in the following cases:

1. during preparation - to obtain a solution with specified properties;

2. during the drilling process - to maintain the required functions;

3. during the drilling process - to change parameters in response to changing geological conditions.

One method of regulating properties is chemical treatment (by introducing special substances – reagents). FHLS reagent is used in the construction of oil and gas wells as a viscosity reducer for water-based drilling fluids of any density at temperatures up to 180 ^° C. The reagent can also be used as a plasticizer and setting retarder for cement slurries.

Thus, in order for drilling fluids to perform the required functions during well drilling, it is necessary to select the basic materials for their preparation, specially process them with chemical reagents, and introduce substances designed to regulate their properties.