Deepwater Challenges Deepwater Challenges
Deepwater Rheology Between the temperature differential from the deepwater seafloor to the bit and the narrow fracture gradient window caused by reduced overburden or depleted reservoirs, designing a deepwater drilling fluid with optimized rheological properties can be the answer to this challenge.
Gas Hydrates Gas hydrates are a crystalline combination of water and methane that form under the temperature and pressure conditions of the seafloor in deepwater environments.
Riserless Drilling When drilling riserless, drilling fluid is pumped without circulation and is deposited, or dumped, on the sea floor in what is coined 'pump and dump' operations.
Shale Inhibition Water-based drilling fluids often outperform non-aqueous drilling fluids in terms of ECD management; reservoir analysis; environment, health and safety protection; and penetration rates.
Salt Formations Salt formations frequently lay over oil-bearing formations, which can be termed pre-salt if older than the salt or sub-salt if younger.
Ballooning Offshore When formation ballooning or breathing happens, drilling fluid losses occur in proportion to pump rates and then return when pumps are turned off.
Lost Circulation Lost circulation occurs when drilling fluid is lost to the formation through porous, vugular or fractured formations.