Sigra manufactures inflatable borehole packers that are used within its own testing equipment. It has also manufactured a range of packers for external clients. Many of these have been built to meet a specific requirement – something that is seldom justified for a one off product. Because the requirements for packer applications vary widely, Sigra does not generally maintain a stock of packers. Sigra has constructed packers for borehole diameters ranging from 50 to 305 mm.
The range of packers that have been built includes:
- Packers for polyurethane resin injection
- Grouting packers
- Well testing packers
- Packers for lifting well screens
- Packers for water injection into underground gas drainage holes