Well metering: giving insight in what is happening in your reservoir

Measurement of the fluids, coming out of each well, is necessary for a number of reasons. It is obvious that such measurements are needed for production management, but that is not the only reason. Wells produce not only hydrocarbons, but also water. By combining the known properties of the reservoir and the reservoir rock with the measurements from all the wells, producing from the reservoir, the operator can get a complete overview from what is happening in the reservoir and how to get the most out of it: to maximize the ultimate recovery.

The amounts of fluids, produced from the individual wells to evacuate a reservoir, need to be measured for several reasons. Of course, without such measurements, production management would be impossible, but that is not the only reason. The well fluids do not consist solely of hydrocarbons, but also of water and sometimes solids (sand). The reservoir is internally connected, but often in a complex way, so both the knowledge of the reservoir and the reservoir rock as well as the produced fluids are necessary to get a complete picture of the way the reservoir is produced and how the ultimate recovery can be maximized.
The data from the reservoir measurements need to be managed on a short term basis (e.g. for production management) as well as on a long term basis (e.g. for reservoir management), knowledge and expertise available from Hint as an independent consultant.

The metering philosophy is gradually changing from “test separator” with P-Q curves to individual well metering using multi-phase flow or wet-gas metering. But a complicating factor is that the fluids from the reservoir are unprocessed, which means that the well meters are exposed to corrosion (e.g. sour water) and erosion (e.g. solids). Also, wax and scale depositions can play a role. It is therefore crucial to select the best suited meter type for such measurements, a choice in which Hint B.V. can give you independent advice which can also cover the changes in well fluid properties over the lifetime of the well.

Benefits

  • Better production management.
  • Higher ultimate recovery.
  • Reduced metering costs.
  • Good data for production management.
  • Insight in the reservoir during to production.