Schlumberger - 27% (https://www.macroaxis.com/invest/ratio/SLB--Probability-Of-Bankruptcy)
Cameron - 37% (https://www.macroaxis.com/invest/ratio/CAM--Probability-Of-Bankruptcy)
Halliburton - 1% (https://www.macroaxis.com/invest/ratio/HAL--Probability-Of-Bankruptcy)