Vapor pressure of water at 183 C is 1073 kPa, but that is absolute pressure. Your "1000 kPa" - is that gauge pressure? If so, you have liquid water coming out and a fair amount of heat is being left in the well. If your stated exit pressure is absolute, then it doesn't look like anything condenses. If, again, your pressure is absolute, then it is rather close to the saturation point, and accuracy of the measured data will be most important.