ESTADRIL

CHEMICALS FOR USE IN INDUSTRY, NAMELY, CHEMICALS AND CHEMICAL SUBSTANCES ALL FOR USE IN THE PETROLEUM INDUSTRY; CHEMICALS AND CHEMICAL SUBSTANCES, PREPARATIONS AND COMPOSITIONS ALL FOR USE IN OIL, GAS AND WATER DRILLING AND EXPLORATION OPERATIONS; CHEMICALS AND CHEMICAL SUBSTANCES, PREPARATION AND COMPOSITIONS ALL FOR USE IN OIL, GAS AND WATER DRILLING COMPLETION AND WORKOVER; CHEMICALS AND CHEMICAL SUBSTANCES, PREPARATIONS AND COMPOSITIONS FOR USE IN OIL, GAS AND WATER DRILLING AND CEMENTING PROCEDURES, STIMULATION, NAMELY, ACIDIZING AND FRACTURING; CHEMICALS AND CHEMICAL SUBSTANCES, PREPARATIONS AND COMPOSITIONS FOR USE IN OIL AND GAS PRODUCTION, TRANSPORTATION AND REFINING