A large independent Operator discovered several leaks and a parted section in the 7 in. production casing from 2,000 ft. to 500 ft. In order to fracture the well, casing integrity had to be restored to handle over 6,000 psi surface fracture pressure to ensure the well could become a viable asset...
Results from two case histories in shale plays indicate that the use of an expandable refrac liner gives comparable, or better, gas production than other methods of perforation isolation, and provides assurance
for frac stage injectivity.
In the Utica Shale, an Operator drilled three wells and experienced loss zones and formation integrity issues.
While drilling an exploration well, an Operator encountered a narrow pore pressure/fracture gradient window that required using more casing strings than planned.
Isolate a lower pressured oil production zone from other nearby higher pressured zones to mitigate cross-flow between the different reservoirs.
The ESeal Liner provided the maximum flow area for injector fluids resulting in greater injection volumes and rates due to less friction pressure loss during injection. The standard conventional scab liner is the 5 in. liner which provides a 4.481 in. ID., while the 5½ x 7 in. ESeal liner...
A Corrosion across the entire 1,100 ft. of 7 in. casing installed in a natural gas liquids (NGL) storage cavern risked NGL leakage into the surrounding formation.
In the first stage of the fracturing program, the uppermost fracture sleeve failed - leaving the economic viability of the wells at risk.
A major operator in the Eagle Ford began a well recovery program to re-activate over 30 wells that stopped producing due to compromised well integrity (leaks).