Cased-Hole Logging Services
Production Optimization
 The very basis of increased profits from an oil and/or gas field is well productivity or production optimization. Profit can be generated through increased production from each well, or enhanced recovery through an extended lifetime for the wells. No matter how the operator may try to structure his efforts in this direction, he will need quality data. Cheap and reliable quality data can be achieved from surface measurements like pressure data and fluid samples, but in order to finally assess the challenges and plan a strategy to increase production, downhole data are required.
TecWel can offer the Oil & Gas industry state-of-the-art services within downhole sand detection with its Well Sand Detector (WSD) tool, and downhole inflow profile with its Well Flow Profile (WFP) tool.
Sand detection
Data from downhole sand detection tools can assist the customer in tuning the well to a sand-free downhole production rate. An important activity is preventing the wellbore from filling up with sand without the customer knowing it taking place. Such information can save the operator having to initiate expensive clean- out operations, but the most profitable result from the logging is the prevention of reduced production caused by sand fill in the wellbore. Data from downhole sand detection can also pinpoint the exact entry point of sand from the producing intervals, enabling the operator to perform sand control activities. It does not matter to the WSD tool whether the sand is being produced through perforations, sliding sleeves, sand control devices like gravel packs etc, still the tool will log the entry point of sand into the wellbore.
Inflow profile
WFP from TecWel outperforms the commonly-known production logging tools in identification of the flowing intervals in the producing sections of the well. The tool can also be run in injection wells. Data showing the operator where the inflow is taking place in the well (inflow profile) will enable the operator to stimulate his production in an optimized way using any kind of chemicals. The data will also enable the operator to more effectively and correctly choose which intervals to re-perforate; and finally, the data from the WFP can be used as input to reservoir simulations.
When planning a stimulation operation in the producing interval (scale treatment, acid stimulation, water & gas shut off, chemical sand control, removal of water block etc) the engineers spend a lot of time doing chemical analysis of fluids from the well, planning the placement technique etc. In addition the engineers use data from production logs to decide which intervals to target with the treatment. In this part of the design the WFP can add substantial information to the engineer, assisting the engineer in obtaining a correct understanding of what the downhole flow conditions in the well actually are.
It is a well-known challenge for the Oil & Gas Industry that the operators do not always get the anticipated and desired outcome of stimulation jobs. This happens even though every effort has been made to properly compose the chemicals being used and a lot of work has also been invested in placement techniques. A lot of factors may contribute to a failed operation, some of which may be related to physical conditions in the well. However, some of the failures are definitely a result of poor-quality information being used in the design process. With the WFP the industry now has a tool that can mitigate such problems.
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