High Pressure Steel Injection Packer is the core component of downhole tube and plays an important role in oil production process. The development of injection packers has gone through a history of more than 100 years since the advent of early packers. As the oil industry grew, it was found that early packers were not enough to meet production needs, so the development of injection packers with anchors was introduced.The injection packer has undergone a development process from unanchored to unidirectional and bidirectional anchoring. In general, unanchored packers have low bidirectional bearing capacity, unidirectional anchored packers have high unidirectional bearing capacity, and bidirectional anchored packers have high bidirectional bearing capacity.
