Pooria Aminizadeh - Kia Oxin Petro Pajoohan Sharif (PETROCO)
Saeed Mahmoudi - Sharif University of Technology

Oil wells with more than ۰.۵ percent H۲S are categorized as sour wells. Harsh media specially H۲S is a challenge in sour wells operations. In this paper, behavior of three of most conventional oil field elastomers have been investigated against H۲S with molar concentrations between ۰ to ۵ percent. For camparison, physical properties and swell behavior are measured pre and post immersion. FKM shows excellent results in all tests, HNBR is accebtable for applications under ۲ percent H۲S and also is better to use for short time services, but NBR is not a good choice at all in high temperature sour media

H۲S Service, FKM, HNBR, NBR, Inflatable Packer, Packing Element