Secondary cementing:

Secondary cementing includes a plug-back job, in which a plug of cement is positioned at a specific point in the well and allowed to set.

Wells are plugged to shut off bottom water or to reduce the depth of the well for other reasons.

Terms Related to Secondary cementing

• Plug-back cementing

  A secondary-cementing operation in which a plug of cement is positioned at a specific point in the well and allowed to set.

• Cementing

  1. The application of a liquid slurry of cement and water to various points inside or outside the casing. 2. To prepare and pump cement ...

• Squeeze cementing

  A cementing repair technique involving injecting cementing under pressure to fill channels in the primary cementing treatment.

• Primary cementing

  The cementing operation that takes place immediately after the casing has been run into the hole. It provides a protective sheath around the casing, segregates ...

• Cementing head

  An accessory attached to the top of the casing to facilitate cementing of the casing. It has passages for cement slurry and retain chambers for ...

• Cement squeeze

  A remedial cementing operation designed to force cement into leak paths in wellbore tubulars. The required squeeze pressure is achieved by carefully controlling pump pressure. ...

• Packer squeeze method

  A squeeze cementing method in which a packer is set to form a seal between the working string (the pipe down which cement is pumped) ...