Despite the advances achieved so far, some important aspects of the operation of the conventional intermittent gas-lift (IGL) remain unexplored or poorly studied, as for instance, the concurrency of cycle stages, as presented by Carvalho (2004), or the stability of cycles due to motor valve timing and adjustment of the gas-lift valve. At the same time, the Zadson pneumatic pump (ZPP) has presented good results in Brazilian fields, motivating studies to develop computational simulators for the design of this method. In the course of the present work, a physical simulator was built for the IGL and ZPP, to validate numerical simulators proposed by previous authors. The laboratory apparatus consists of three operational sets, the first set represents the well-reservoir coupling, the second set is the injection system of compressed gas and the third set is a collection of columns of production of the conventional IGL and ZPP. For measurement, there are pressure transducers located at various points of the laboratory apparatus and tanks for measuring the produced volume. The system of data acquisition and actuation of the gas-lift and motor valves are controlled by a microcontroller board. Tests were performed by changing the operating variables. As conclusions of the study the concurrent stages during the IGL cycle were identified, the fallback was rated for various operating conditions, the stability of the IGL cycles was studied, and an operating map of the conditions of a stable IGL cycle was drawn. In addition, three operating modes of the ZPP were tested.

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