Biological enzyme oil-displacing agent for increasing crude oil production rate and its oil displacing method
An oil displacement method and bio-enzyme technology, applied in drilling compositions, chemical instruments and methods, and production fluids, etc., can solve problems such as environmental and formation pollution, large temperature influence, and non-degradability, so as to improve water injection capacity, Prevent water damage and improve oil recovery
Inactive Publication Date: 2007-05-16
BEIJING VICTEX ENVIRONMENTAL PROTECTION TECH DEV
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Problems solved by technology
[0004] In order to solve the problems of poor stability, high temperature influence, non-degradable, toxic, corrosive, causing fouling in the oil layer, and pollution to the environment and strata in the existing oil displacement process, the present invention provides a method for increasing crude oil The bio-enzyme flooding method of oil recovery can effectively improve the water injection capacity, reduce the sand-carrying capacity of oil, and reduce the friction between fluid and sandstone, so as to stabilize the reservoir structure and improve the recovery rate. Purpose
Method used
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Embodiment 1
[0016] Example 1, 120 kg of biological enzymes, 40 kg of bis-quaternary ammonium salts, alkyl glycoside C 8～10 120 kg of APG and 720 kg of water are put into the liquid distribution tank, and injected into the formation by the injection pump through the injection pipeline.
Embodiment 2
[0017] Example 2, 200 kilograms of biological enzymes, kilograms of double quaternary ammonium salts 4, alkyl glycoside C 8～10 50 kg of APG and 746 kg of water are put into the liquid distribution tank, and injected into the formation by the injection pump through the injection pipeline.
Embodiment 3
[0018] Example 3, 160 kg of biological enzymes, 120 kg of bis-quaternary ammonium salts, alkyl glycoside C 8～10 4 kg of APG and 716 kg of water are put into the liquid distribution tank, and injected into the formation by the injection pump through the injection pipeline.
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Abstract
The invention relates to a kind of biological enzyme oil driving agent used for improving crude oil extraction rate and oil driving method. It mainly solves the problems in present oil driving process that: the stability is bad, it is greatly effected by temperature, it can't degrade, is nocuous, has corrosiveness, can cause oil layer form smudgily, and bring pollution to stratum and environment. Its characteristics are: the biology enzyme oil driving agent is comprised of following weight percents of components: biology enzyme 12 - 20%, diquaternary salt 0.4 - 12%, alkyl polysaccharide glucoside (C8-10APG) 0.4 - 12%, and the remaining is water. The biological enzyme oil driving method can effectively improve affusion ability, decrease petroleum granulated substance carrying ability, reduce the friction liquid and sandstone, so as to achieve the purpose of stabilizing oil storage and improving the recovery ratio.
Description
Technical field: [0001] The invention relates to an oil displacement agent and an oil displacement method for enhancing crude oil recovery, and belongs to a biological enzyme oil displacement agent and an oil displacement method for enhancing crude oil recovery. Background technique: [0002] The crude oil recovery rate refers to the percentage of the accumulatively produced oil volume of the oilfield to the geological reserves of the oilfield, that is, the ratio of the recovered crude oil volume to the original underground oil storage volume. With the advancement of oilfield development technology, many effective methods of enhancing oil recovery have appeared one after another. In the initial stage of oil field development, water flooding is usually used for production. That is, by injecting water into the formation to drive the flow of crude oil and be produced. This method of extracting crude oil by relying on natural energy is called primary oil recovery. The recover...
Claims
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IPC IPC(8): C09K8/04E21B43/22
Inventor 赵力陈韶军于洋金艳方
Owner BEIJING VICTEX ENVIRONMENTAL PROTECTION TECH DEV
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