Application Benefits

Able to detect gas injection point.

Differentiate between injection at Gas Lift Valve (GLV) or from a tubing leak/packer if the cooling is not aligned with the GLV.

Detect sequence of injection during well startup, quickly identifying faulty valves.

Detect unstable operation/injection (slugging), which may indicate improperly sized GLV.

More efficient than performing gradient surveys with slickline, as DTS continuously measures the entire temperature profile along the completion.

Pre and Post Stimulations

The distributed sensing nature of Fiber Optic based measurements allows profiles to be recorded along the borehole from the surface to the deepest point reached. These profiles are repeated several times per minute to see changes in signature along all the wellbore. This represents a significant time saving in survey time.

Acquiring such profiles before and after stimulation jobs (or even recompletions) will instantly make it clear what changes have occurred as a result of the operation. Such before and after stimulation surveys allow quick and detailed evaluation of the stimulation so that subsequent operations can be adjusted for optimum results.

Single Well Application

Powerful wellsite computers now allow all this monitoring capability to happen in real time during completion operations and achieve unparalleled degrees of optimization.

Limit frac extension to avoid going out of the reservoir and into surrounding aquifers.

Multiple Well Application

The distributed nature of Fiber optic (both temperature and acoustic) measurements can provide in-depth information during all phases of a frac completion, from fracture development and propagation through proppant placement and into flowback and finally production.

As this measurement is passive and non-invasive, fiber optic cables can be placed either in the well being frac’ed or in an observation well. Coiled tubing deployed or pumped down cable will allow sensing as close as possible to the zone of interest.

Advantages of this solution:

Accurate and precise monitoring of fracture initiation and propagation

Economies achieved due to use of the correct amount of horsepower, frac fluids and proppants.