Gas lift advantages?

1) Operation of gas lift valves is unaffected by produced solids (sand etc.)

2) Gas lift operation is unaffected by deviated or crooked holes

3) Use of Side Pocket Mandrels allows easy wireline replacements of (inexpensive) gas lift valves when deviation < 60 ̊

4) Provides full bore tubing access for coiled tubing or other well service work

5) High fluid gas oil ratio improves lift performance rather than problems as with other artificial methods.

6) Flexible - can produce from a wide range depth & flow rates;

- uses the same well equipment from 100-10000 bpd production rates;

- copes with uncertainties and changes in reservoir performance, reservoir

pressure, water cut & production index over the well life.

7) Low surface profile important for offshore & urban locations;

8) Tubing & annular subsurface safety valves available when required by safety regulations;

9) Gas lift tolerates “bad” design – though “good” design is more difficult;

10) Gas lift has a low initial (downhole) equipment cost;

11) Gas lift has a low operational and maintenance cost. Major workover are infrequent when wireline servicing is possible.

12) Well completions are relatively simple. This can be important in remote areas.

13) Gas lift operation independent of bottom hole operation.