Review the oil well problem, determining calculations for pumping rate, chemical additives and concentrations for treatments. Then make and decide the right chemical to do the stimulation / fracturing job, and test it with the right way to get the perfect successful stimulation / fracturing job.• Conduct quality control tests during job (fluid testing) to ensure proper delivery of service; make changes/corrections as required; utilize and apply sound engineering principles on the job.• Matrix Acidizing / Scale Treatment on Carbonate or Sandstone Formation in order to remove the scale to make a more flow of oil to surface.• High Rate Water Pack Job, fill the screen of perforation with the right size of gravel using high pressure pump.• Acid Fracturing, the treatment system will fracture the formation using acid and gel, so the acid will reaction slowly, it can penetrate more deeper to fracture the formation. • Hydraulic Fracturing, the treatment system will carry the sand into the formation, giving a higher pressure than the formation’s fracture pressure, so the sand stay in the formation’s fracture and the treatment system flow back to surface.• Clean the tubing from paraffin, all the treatment system should be avoid corrosion from the tubing and coiled tubing.• Nitrogen services, for nitrified acid in commingle well and nitrified kick off use Coiled Tubing, in order to make the well condition in Under-balance so the Oil can flow to surface. Determine the right way, calculation for pumping rate and volume.