Published September 2015

The development of a new thermochemical composition and method for cleaning and restoration of layer bottomhole zones permeability

F.S. Ismaylov

M.G. Abdullayev

R.G. Garayev

It is known that in a certain period of development, flow rate in oil wells decreases. The reason is that deposition on the surface of the rock heavy oil components (asphaltenes, resins and paraffin particles, etc.) content in the oil composition. In order to prevent this problem, numerous studies carried out in the direction of expansion of oil filtration zone near the wellbore, and restore the primary permeability of the zone. Deterioration of permeability bottom zone occurs in cases when, after drilling near-wellbore remain untreated areas of drilling fluids. In such cases, the question arises cleaning bottomhole zones wells with different compositions. For this reason, we inserted a job that can be achieved using melt of such heavy components of crude oil and drilling mud residues using thermochemical reactions. In the proposed work as a new content of a composition based on hydrochlorid acid and sodium hydroxide is offered. Upon meeting these components with each other and an exothermic reaction occurs as result of a sufficient amount of heat is released. Dedicated heat is sufficient to melt all known components of heavy oils and residues of drilling fluids. In addition, components have good solvent power. As a result, recovers the initial conductivity of the formation, thus increasing productivity of wells.