Evergrow Calcium Chloride Uses in Drilli g and Maintenance Oil Gas Wells

Evergrow Calcium Chloride

Uses in Drilling and Maintenance Oil Gas Wells

Dr .Adel Abdel Khalik EVERGROW CONSULTANT

Egyptian Calcium Chloride produced by Evergrow Company is mainly used inestablishing and maintaining oil and gas wells,to improve its efficiency and productivity.It helps well fluids gain needed consistency, increases density and stabilizes shale formations. It is also, seals well casings and displaces drilling mudkeeping gases from forming and helps sludge from getting out of hand. It is mainly used as:-

1- Drilling Muds:

Calcium Chloride is used in drilling mud to cool and lubricate the bit and to remove cuttings from the hole. Calcium Chloride helps add density to the mud to overcome formation pressures and keep oil, gas, and water in place. Calcium Chloride inhibits clay and shale hydration, adds needed weight to overcome formation pressure, aids in carrying cuttings to the surface, and is easily diluted from more concentrated solution.

2- Completion Fluids:

Calcium Chloride is ideal as a completion fluid .It is used just before

the producing formation is reached to the producing formation is reached to flush the hole clean of solids.Thus, the flush the hole clean of solids.Thus, the casing can be cemented into place. casing can be cemented into place. place to provide a way to control well place to provide a way to control well pressure. The concrete also prevents pressure. The concrete also prevents caving and confines production to the caving and confines production to the well bore.well bore.

3- Concrete Accelerator: 3- Concrete Accelerator:

Calcium Chloride dramatically cuts Calcium Chloride dramatically cuts set time needed for the concrete, and set time needed for the concrete, and can be used down-hole to several can be used down-hole to several thousand feet.To ensure a pressure thousand feet.To ensure a pressure tight connection of pipe runs from the tight connection of pipe runs from the reservoir to the surface of oil and gas reservoir to the surface of oil and gas wells, the casing must cemented into wells, the casing must cemented into

4- Packer Fluid:4- Packer Fluid:

Calcium Chloride is usedwith a packer Calcium Chloride is usedwith a packer fluid in packing the circular space fluid in packing the circular space between the tubing and the casingthat between the tubing and the casingthat keeping the well fluids away from keeping the well fluids away from the casing to minimize corrosion and the casing to minimize corrosion and reduces well pressure on the casing reduces well pressure on the casing and reduces the prospect that a and reduces the prospect that a casing leak could become a blowout. casing leak could become a blowout. It also helps maintain pressure levels It also helps maintain pressure levels because it has sufficient density to because it has sufficient density to offset the pressure on the casing. offset the pressure on the casing.

5- Workover Fluid:5- Workover Fluid:

Calcium Chloride is used as a Calcium Chloride is used as a workover fluid, flushing wells free workover fluid, flushing wells free of solids before they are repaired or of solids before they are repaired or before reworking a well that has been before reworking a well that has been idle for some time.idle for some time.