Development of a new type of inflatable packer for HPHT wells

To satisfy the requirements of completion crafts and improve the pressure-bearing capacity of inflatable packers,a series of improvements were conducted over traditional inflatable packer.The rubber material was optimized to improve its pressure-bearing and temperature-bearing capacity.The design of wrappage skeleton structure was re-designed to enhance the anti-sulfur capacity.The design of wrappage backing ring was also improved to enhance the overall pressure-bearing capacity and sealing performance.Based on these improvements,a new type of inflatable packer for HPHT wells was developed. The field tests show that this inflatable packer could work well under 170℃ and 40 MPa conditions.