Calcium carbonate in oil drilling

Calcium carbonate in oil drilling Oil and gas drilling includes many complex operations in which calcium carbonate and various other minerals play an important role. Normally, natural minerals (barite and calcium carbonate) are used in oil and gas drilling as additives to the fluids used in the step Drilling and cementing are used.

Application of calcium carbonate in oil drilling

is mainly used as a plutonium agent. A mixture of pre-designed particle sizes is added to the drilling fluid. These minerals help to control the amount of infiltration fluid in the formation of the rock being drilled. This is important to avoid damaging the rock, which in turn can limit oil and gas production. Additionally, the acid solubility of calcium carbonate (CaCO3) means that potentially harmful solids can be acidified and removed from wells to maximize production. Excavated calcium carbonate can also be used as a weighting agent.

Calcium carbonate in oil drilling is one of the most common scale in oilfield operations. Different fluids (salt, oil and gas) can be mixed in the tank or wells under different thermodynamic, kinetic and hydrodynamic conditions, which affects the formation trends of carbonate scale. Usually, drilling calcium carbonate is ignored in critical conditions. At present, the calcium carbonate scale formation mechanism considered by the industry only considers the liquid wastewater phases. It is important.

The main variables determining the location and amount of calcium carbonate scale deposits in an oil field are:

pressure and temperature anywhere in the entire system. Salt water and oil compositions have been exposed to temperature or pressure changes during and after reservoir fluids. Bubble point and corresponding flash behavior of a three-phase system of oil, salt, and gas as a function of pressure and temperature.

Distribution of CO2 between oil and salt phases and drastic changes of carbon dioxide before and during each production operation. Constant changes of water (brine) and oil ratio (WOR), gas and oil ratio (GOR) and gas, water and salt ratio (GWR) in each production operation. This reservoir and production variables at different locations in the production system can be continuously changed as a function of position and time in any type of production operation in a specific area. Carbonate is a weighing agent that is mainly used in horizontal wells