Two field-proven cementers for most vertical wells
Halliburton’s External Sleeve (ES) stage cementers have recorded remarkable field results since their introduction in the early 1990s, achieving a success rate of 99.99%. Two types are offered: the Type-P ES cementer and the Type-H ES stage cementer.
Type-P ES cementers can be used in most vertical wells, regardless of depth, pressure or temperature. (Note: Because they are equipped with free-fall opening plugs, Type-P ES cementers should not be used in wells deviated more than 30 degrees from vertical.) Type-P ES cementers are available in casing sizes ranging from 4.5 in. to 20 in. Standard case material grade is L-80 steel, and other casing grades and premium threads can be provided at the customer's request.
Features of the Type-P ES cementer include:
Adjustable operating pressure
Type-H ES cementers are hydraulically opened stage cementers that can be used in most wells, regardless of depth, pressure or temperature. Although the Type-H ES cementer includes a free-fall plug and operates much like a Type-P ES cementer, it can also be opened with internal casing pressure after the first-stage shutoff plug lands. This design feature saves time by eliminating the need for dropping a free-fall plug from the surface. Halliburton recommends adding a baffle adapter in the casing string above the float collar to help ensure proper seating of the first-stage shutoff plug.