دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to reverse the flow of fluid from a water injection well to get rid of sediment that has clogged the wellbore.

v: The verb form of backwashing.

n: a polymer whose basic repeating unit, or rnonorner, is a cornbination of carbon, hydrogen, oxygen, and nitrogen. Polyacrylarnides are used to adjust the viscosity of water slugs during chernical flooding operations. They can also adhere to the walls of rock pores, decreasing the effective permeability of established channels, forcing the injection fluid into new channels, and thus irnproving sweep efficiency.

n: polymer with a high molecular weight. The basic repeating unit or monomer of polyacrylamide is a combination of carbon, hydrogen, oxygen and nitrogen. Polyacrylamides increase the viscosity of the water slug that precedes the final water injection. Polyac

a polymer with a very stable carbon chain. A good friction reducer in small amounts, but the polymer may cause formation damage. Can be used to gel acid, but the polymer will not break.

produced water injection.

n: pump used in waterflooding or in water disposal. In waterflooding, the pump injects water into a well drilled in one part of a reservoir to force oil to a production well. In water disposal, the pump injects water produced from a well into a reservoir for disposal.

n: a well into which water is pumped to dispose of the water or to recover oil in a waterflood.

n: a method of improved recovery in which water is injected into a reservoir to remove additional quantities of oil that have been left behind after primary recovery. Waterflooding usually involves the injection of water through wells specially set up for water injection and the removal of water and oil from production wells drilled adjacent to the injection wells.