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Pressure / Temperature Surveys

FESCO uses memory electronic pressure/temperature gauges to acquire different types of reservoir BHP/BHT data.
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Wellbore Fluid Gradient Surveys
(Pressure and Temperature)

1. Static Gradient Surveys
A. Used to determinei. Wellbore fluid types
ii. Wellbore fluid interfaces (liquid levels)
iii. Wellbore fluid densities
iv. Wellbore pressure and temperature profile versus depth

Flowing Gradient Surveys:

1. Used to determine
A. Wellbore density profile versus depth

Lifting Gradient Surveys:

1. Used to determine
A. Wellbore density profile in a well producing via gas-lift
B. The working gas-lift valve

Temperature Gradient Surveys

1. Electronic Temperature Memory Tool

2. Temperature RTD located directly in the wellbore fluid for fast response

3. Used to detect small temperature changes in applications such as
A. Detecting cement tops after cementing casing in place
B. Holes in tubing while flowing, etc.

Pressure Transient Data

1. Test Types
A. Buildup Test
B. Drawdown Test
C. Falloff Test
D. Injection Test
E. Interference Test
F. Deliverability Tests

2. Wellbore Configurations
A. Vertical/Slanted
B. Horizontal

3. Well Types
A. Producing Wells
B. Salt Water Injection/Disposal Wells
C. Monitor Wells