Using method for oil-well microorganism paraffin removal and inhibition agent

Abstract

The invention provides a using method for an oil-well microorganism paraffin removal and inhibition agent. The using method comprises the steps that (1) indoor evaluation is conducted, specifically, the microorganism emulsification degradation effect and pour point depressing effect and the influence on the surface tension and PH value of a culture solution are evaluated; (2) oil-well screening is conducted; (3) oil-well washing is conducted, specifically, a hot washing method is adopted, and the hot water temperature is higher than 90 DEG C; and (4) microorganism casing injection is conducted, specifically, during oil-well paraffin removal and inhibition, the following parameters including the production electric current, the indicator diagram, the load and the oil-well yield should be noticed and studied, and according to the parameters, the strain adding quantity and the adding period are adjusted; and effect detection and evaluation are conducted, specifically, the polish rod lifted-up paraffin checking method and the biology microscopic examination method are adopted to obverse the paraffin precipitation condition, the oil-field paraffin removal period is recorded, and then comparison is conducted. According to the using method for the oil-well microorganism paraffin removal and inhibition agent, construction is easy, the casing adding method does not influence normal production of an oil well, paraffin precipitation and viscosity reduction can be prevented, the oil-well clearing period is prolonged, and the oil-well liquid yield is increased.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a method for using an oil well microbial wax removing and preventing agent. technical background [0002] In the process of oil exploitation, as the wellbore temperature and pressure drop, the waxy components in crude oil will often precipitate, grow and deposit in the tubing, and then form oil well wax deposits, seriously affecting the normal production of oil wells. Therefore, effective measures must be taken to control oil well wax deposition. [0003] At present, the methods for controlling wax deposition in oil wells mainly include physical and chemical methods. However, the physical method (mainly including hot washing and mechanical wax scraping) has the disadvantages of high cost and great damage to the formation; the chemical method (mainly including chemical wax remover and chemical wax remover) has the disadvantages of large consumption, high cost, Poo...

AI Technical Summary

Problems solved by technology

However, the physical method (mainly including hot washing and mechanical wax scraping) has the disadvantages of high cost and great damage to the formation; the chemical method (mainly including chemical wax remover and chemical wax remover) has the disadvantages of large consumption, high cost, Disadvantages such as poor safety and environmental performance