Cement retainer and squeeze technique

A method of squeezing casing in a subterranean well comprising:

• running a cement retainer, having a passage therethrough open to allow flow into the well, on a wire line into the casing and setting the cement retainer above perforations through the casing;
• sealing between the cement retainer and the casing;
• pumping cement into the casing followed by a wiper plug wiping an interior of the casing;
• and
• latching the wiper plug onto the cement retainer and sealing the passage thereby preventing back flow of cement into the casing.

A method of squeezing casing in a hydrocarbon well comprising:

• a) running a cement retainer, having a passage therethrough open to allow flow into a well, on a wire line into the casing and setting the cement retainer above first perforations;
• b) pumping cement into the casing string followed by a wiper plug wiping an interior of the casing;
• and
• c) passing cement through the passage into the first perforations;
• then,
• creating second perforations in the casing at a location nearer earth's surface than the first perforations, repeating steps a)-c) and then
• drilling out all the cement retainers and wiper plugs.