Utilizing MPFM to evaluate the effectiveness and efficiencies of various well operations throughout all stages of petroleum recovery offers significant benefits to the end users. These operations or workovers include gas lifting and pump placement, hydraulic fracturing, water, gas and chemical injection, as well as heat injection. For some operations such as gas lift optimization, MPFM offers immediate evaluation of the optimization operation. On the other hand, MPFM should be used on a continuous basis for an extended period of time to evaluation the effectiveness of operations such as water flooding. MPFM offers the unique feature of small foot print and minimum pressure drop, hence minimum interference with the evaluated operations, while provides real time results to assist optimization process and design. Haimo can deploy mobile or fixed MPFM units for such evaluation services.