| 摘要 |
A method of inhibiting the growth of bacteria, especially anaerobic sulphate reducing bacteria, within oil and gas reservoirs by the addition of peroxy compounds to injected flood water is described. Suitable peroxy compounds include one or more of methyl ethyl ketone peroxide, cyclohexanone peroxide, acetyl acetone peroxide, diacetone alcohol peroxide, dibenzoyl peroxide, ditertiary butyl peroxide, tertiary butyl peroxide, hydrogen peroxide, tertiary butyl peroxy benzoate, inorganic and organic peroxycarbonates, or functional equivalents or derivatives of these compounds. The peroxy compound additives have the advantage of being thermally sensitive such that penetration into the reservoir and placement in strategic zones can be achieved leading to sterilisation deep within the reservoir. The compounds may also be tailored to optionally scavenge hydrogen sulphide produced by bacterial growth from the reservoir fluids. |
