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Water Injection

Ball valves designed to handle the high pressures involved in water injection oil & gas recovery

Process

Water injection is used in the production of oil where high pressure water is injected into the oil reservoir to increase pressure to increase oil recovery from an existing reservoir. Water injection wells can be found both on- and offshore. The injected water pressurizes the reservoir and displaces the oil, pushing it towards a well. Typically 30% of the oil in a reservoir can be extracted using well pressure, but water injection increases this recovery factor percentage and maintains the production rate of a reservoir over a longer period.

Any source of bulk water can be used for injection. Water that has been produced as a byproduct along with the oil and gas, known as ‘produced water’, is often used as an injection fluid. But, because the volumes of water being produced are never sufficient to replace all the production volumes (oil and gas, in addition to water), additional ‘make-up’ water must be provided. Mixing waters from different sources, such as from the sea, aquifers and rivers, exacerbates the risk of scaling or corrosion in pipework. And, when mixed with the hydrocarbons, solids and pressure, the ‘water injection mixture’ is harmful to the system and its components. Even though processing of the produced water takes place, it still carries hydrocarbons and solids (sand).

Engineered Solutions

MOGAS ball valves handle high pressures, entrained particulates, and harsh environments, such as water injection, during a variety of methods used to increase production of gas and oil reservoirs and extend the life of conventional wells. Valve features include:

  • Recessed metal seats are shielded from continual exposure to the process flow and particulate erosion
  • Robust forged bodies and end connections have greater wall thickness in critical areas
  • Heavy duty mounting bracket minimizes stresses and maintains precise stem alignment
  • Blow-out proof stem is fully supported
  • Dual delta gasket sealing between the body and end connect as well as the body and bonnet protect against any body leakage
  • Packing area is protected from potential particulate erosion
  • Live loaded packing ensures constant packing energization
  • Quick-quarter turn operation of non-rising stem does not pull destructive particles through the interior diameter of packing area
  • Sealing surfaces (ball and seat face) are in permanent contact throughout its 90-degree operation

 
  1. Manual Isolation
  2. Water Injection Control
  3. Emergency Shutdown
  4. Drain