New-type Dual Sealing Multi-function Mechanical Packer (Patent product)

Brief introduction
After many years’ oil recovery, almost all the casing in old wells are in distortion, corrosion etc. So packer could not set and seal normally and bring operation failure. According to this problem, our engineer discussed with oilfield expert and designed this new-type dual sealing packer. There are two sets of rubber elements in packer, and all could be set reliable. One reliable setting, then whole packer could set strictly. This type of packer is mainly for resolving the problem of unset in casing which in distortion, corrosion and etc.

Structure feature
New-type Dual Sealing Multi-function Mechanical Packer is large diameter hanging packer which could seal dual pressure. It seals annulus by string tool weight which set on rubber element. Pull up string tool to remove weight on rubber element and unset packer. It could be used for formation test, acidification and fracturing, cementing and other downhole operations. Large diameter could allow to pump large liquid when pressure decreased little, and transit of through tubing perforator. So, New-type Dual Sealing Multi-function Mechanical Packer could achieve many operations in one time of running.
New-type Dual Sealing Multi-function Mechanical Packer is composed by hydraulic anchor system, dual elements sealing system, slip anchor system and friction rachet system. Connecting structure between two series of elements are crucial for designing. Two series of elements could set as soon as bottom slip open and clamp, one element set not strictly and failure cause of two elements movement will not happen.

Technical parameter
1. Size: 5’’, 5 1/2’’, 7’’, 7 7/8’’, 9 5/8’’, 10 3/4’’
2. Setting power:
  5’’& 5 1/2’’ Packer: 80~100KN;
  7’’& 7 7/8’’ Packer: 100~140KN;
  9 5/8’’& 10 3/4’’ Packer: 140~180KN.

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