Abstract
A frequent challenge encountered in the exploitation of mature gas fields located in the Getic Depression is sand production. Causes of sand production are mainly related to degree of rock consolidation, lithology, increasing water production and production rates. The effects of sand production are multiple such us low productivity of the gas wells, accumulation into the surface equipment, erosion of downhole and surface equipment, plugging the perforation zone and casing damage. The current paper will address the sand production- challenges and new perspectives in remedial work of wells which are producing from gas reservoirs located in Getic Depression. The article presents through some case studies the research performed for the implementation of the frac-pack technology in some gas wells.
Highlights
The difficulties encountered in the exploitation of natural gas fields from the Getic depression (Romania) are mainly related to the sand production and the near-reservoir aquifer’s expansion
In the current context in which mature gas fields are highly important sources of energy, the problems caused by sand production and finding the optimum technique and technology to prevent or to mitigate them, is a topic of interest for research
Commercial hydrocarbon fields (e.g natural gas) whose permeable porous media would consist of unconsolidated rocks could be included, some of them, in the category of reservoirs whose production of fluids is associated with the sand production
Summary
The difficulties encountered in the exploitation of natural gas fields from the Getic depression (Romania) are mainly related to the sand production and the near-reservoir aquifer’s expansion.
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