RE:RE:RE:RE:RE:Kawa Pay Zone?I know exactly what h2s does. 150 ppm is the limit after that you get headaches and other effects. 500-1000 you font know what hit you. What im saying i have drilled many wells that there is no H2s in it. After flowing it was up to 5%. Thats how inaccurate it is. Chromos do tell you that. I have also drilled though shales that swell and collapse with inproper mud or being on a hole too long. Very hard to control. It can be a compounding problem due to other issues