Information AboutGas Lift |
| CATEGORIES ABOUT GAS LIFT | |
| petroleum production | |
|
The amount of gas to be injected to maximize oil production varies based on well conditions and geometries. Too much or too little injected gas will result in less than maximum production. Generally, the optimal amount of injected gas is determined by well tests, where the rate of injection is varied and liquid production (oil and perhaps water) is measured. Although the gas is recovered from the oil at a later separation stage, the process requires energy to drive a Compressor in order to raise the pressure of the gas to a level where it can be re-injected. The gas-lift mandrel is a device installed in the tubing string of a gas-lift well onto which or into which a gas-lift Valve is fitted. There are two common types of mandrel. In the conventional gas-lift mandrel, the gas-lift valve is installed as the tubing is placed in the well. Thus, to replace or repair the valve, the tubing string must be pulled. In the sidepocket Mandrel , however, the valve is installed and removed by Wireline while the mandrel is still in the well, eliminating the need to pull the tubing to repair or replace the valve. The gas-lift valve is a device installed on (or in) a gas-lift mandrel, which in turn is put on the Tubing String of a gas-lift well. Tubing and casing pressures cause the valve to open and close, thus allowing gas to be injected into the fluid in the tubing to cause the fluid to rise to the surface. In the lexicon of the industry, gas lift mandrels are said to be "tubing retrievable" wherein it is deployed and retrieved attached tto the production tubing. See gas-lift mandrel. Examples of typical gas lift valves and mandrels may be found at: http://www.tejasre.com/Products_Gas_Lift_Home.cfm SEE ALSO |
|
|