The DSQ-B type packer has added an upper end connecting cylinder structure on the basis of the DSQ-A type packer. It is mainly used for production tasks such as oil well sealing and production, gas well completion production, and ultra-high pressure water injection and gas injection into injection wells. It can also be used as a hanging packer in multi-layer fracturing strings. The principle is to use the matching insertion tube and ball seat to form a seal at the inner hole of the packer, apply pressure from the oil pipe, use the thrust generated by the piston of the packer itself to act on the slip, and squeeze the sealing rubber cylinder through the upper and lower cones. Under the designed sealing pressure, the upper and lower slips of the packer break and bite into the inner wall of the casing, and the rubber cylinder expands and seals, completing the sealing; At the same time, the locking ring inside the packer locks the sealing force, maintaining the sealing of the slip and rubber sleeve.

Features/Advantages

When going down the well, the tubing assembly is lowered to connect the packer, and one trip of the tubing string completes the seat sealing and tubing anchoring

When making a suspension packer, a separate sealing tool can be used to feed it into the sealing chamber

The ratchet lock ring maintains the seating load, ensuring safe seating even under pressure changes

The intubation and packer are connected by special threads for easy retrieval of the intubation

Has a large inner diameter and can withstand high pressure

The maximum working pressure is 70MPa (10000psi)

The recommended temperature for regular rubber sleeves is within 148 ℃ (300 ℉), and higher temperatures can be customized