Ways to improve the efficiency of chemical using in wells

UDK: 622.276.72
DOI: 10.24887/0028-2448-2021-6-74-79
Key words: chemical reagent, inhibitor, efficiency, well, negative factor
Authors: Е.Yu. Nevyadovskiy (Rosneft Oil Company, RF, Moscow), V.V. Gorbunov (Rosneft Oil Company, RF, Moscow), R.Т. Israfilov (Rosneft Oil Company, RF, Moscow), I.G. Klyushin (Rosneft Oil Company, RF, Moscow)

The choice of technology for dealing with well negative factors is based on comparative technical and economic calculations. The effectiveness of the use of chemical reagents is evaluated by increasing the operating time of the submersible equipment and the absence of negative factors. From a regulatory point of view, this is a post-factum approach, when the effectiveness of using a chemical reagent on a complicated well (like any other technology) can be fully evaluated after a stop and the fact of failure, other manifestations of complications during the operation of pumping equipment (increased electric current loads, sub-links, etc.) speak only of indirect signs of low efficiency, which may manifest themselves due to other factors. The lack of online monitoring methods and an individual approach to varying technologies depending on the characteristics of the well have a negative impact on the control of the effectiveness of chemical using in wells.

The article highlights the problem of the possibility of operational influence on the effectiveness of the use of chemical reagents in wells. The main indicators are identified, which should undergo a more in-depth assessment in terms of their consideration in tests and industrial applications. The main ones are: correct models of the treated liquids, conditions and design of wells (production rate, dynamic fluid level, etc.), and also the technological possibility of delivering the reagent to the effective area (problem area) in the well to protect the deep-pumping equipment from the negative influence of the complicating factor. In the future, in order to improve the efficiency of chemical using in wells, the test results and modeling of the influence of indicators should form the basis of the IT-model, which will take into account not only the inhibitory effect of the reagent, but also its behavior in certain well conditions.


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