Hydrogenated hot gas chemical solution component and application thereof in increasing yield of horizontal well

Abstract

The invention belongs to the technical field of oil exploitation and particularly relates to a hydrogenated hot gas chemical solution component and application thereof in increasing the yield of a horizontal well. The component is formed by mixing a first solution and a second solution at 1:1 by mass. The first solution is prepared from, by the mass sum of 100%, 50-55% of ammonium nitrate NH4NO3, 8-13% of hydrocarbon fuel, 4.5-5.5% of sodium chloride NaCl or potassium chloride KCl, 7-9% of nitric acid HNO3, 0.5-3.0% of an emulsifying agent and 15-20% of water, wherein the emulsifying agent is a mixed solution of polyethylene polyamines and tall oil fatty acid at 3:(0.5-0.7) by mass. The second solution is prepared from, by the mass sum of 100%, 22-26% of sodium nitrate NaNO2, 25-31% of urea CO(NH2)2, 20-25% of sodium borohydride NaBH4 and 27-31% of tetrachloroethylene C2C14. By means of the hydrogenated hot gas chemical solution component and application thereof in increasing the yield of a horizontal well, the yield of a horizontal well is increased while the problem of blockage of a horizontal well is solved, the technology is safe, reliable and low in cost, and meanwhile a stratum is protected.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a hydrogenation hot gas chemical solution component and its application in increasing production of horizontal wells. Background technique [0002] In this century, the structure of oil and gas wells in the oil and gas industry has become significantly more complex and tends to be horizontal, thereby increasing the drainage area of ​​ore beds. At the same time, it is believed that horizontal oil and gas wells have a larger contact area with rock formations, which can increase the release of hydrocarbons in the well. Extraction efficiency and acceleration capabilities. The construction, development and operation of horizontal wells and the inflow enhancement of hydrocarbons are significantly different from the hydrocarbon recovery techniques of vertical wells. Because of this, the methods used for vertical wells are largely unsuitable for horizontal oil ...

AI Technical Summary

Problems solved by technology

All of these lead to reduced permeability near the well, so the production rate is often only more than 60% of the design, what's more, the oil and gas wells suffer greater damage and the production is completely interrupted

[0005] In the prior art, the thermochemical oil stimulation methods using hydrogenation have shown significant efficiency in commercial practice, but due to the different structures of oil and gas wells, these methods are not suitable for the treatment of horizontal oil and gas wells near the wellbore

Images