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Water injection well on-line profile control agent prepared from oil field sewage treatment waste residues

A technology of oilfield sewage and profile control agent, which is applied in the direction of drilling composition, chemical instruments and methods, etc., can solve the problems of scaling and environmental damage, and achieve the effect of good suspension and strong consolidation ability

Inactive Publication Date: 2011-09-21
曾琛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But now with the increase of water consumption, the water contains a large amount of calcium ions, magnesium ions, bicarbonate ions and other inorganic ions that can corrode the water injection pipes and cause scaling. In addition, these inorganic ions will decrease during the preparation of the polymer solution. The viscosity and activity of the polymer, therefore, it is necessary to treat this kind of sewage to reduce the content of inorganic ions in the water and improve its water quality
However, in the process of water treatment, a large amount of mud and sand are produced, which occupy a large amount of land for storage, and at the same time cause damage to the environment due to the chemical substances such as oil, so it is of great economic benefit and environmental benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0024] The present invention will be further described below in conjunction with the embodiments, but the protection scope of the present invention is not limited thereto.

[0025] The raw materials used in the examples, unless otherwise specified, are all commercially available products.

Embodiment 1

[0027] Weigh 100g of mud sand produced by water treatment, add 0.1g of magnesium oxide (bonding accelerator), 1g of sodium dodecylbenzene sulfonate (emulsifier), 0.5g of sodium polymethacrylate (suspending agent), 0.5g of amine propylene Triethoxysilane (reinforcing agent), the cement is Portland cement 52.5R from Shanshui Group, the amount of cement is variable, after mixing evenly, add it to 900g of water, precipitate, consolidate, and test the strength.

[0028] Cement dosage / g

Embodiment 2

[0030] Weigh 100g of mud sand produced by water treatment, 20g Portland cement 52.5R of Shanshui Group, 1g sodium dodecylbenzenesulfonate (emulsifier), 0.5g sodium polymethacrylate (suspending agent), 0.5g amine Propyl triethoxysilane (strengthening agent), add a variable amount of calcium sulfate (adhesion accelerator), mix well, add it to 900 g of water, precipitate, consolidate, and test the strength.

[0031] Calcium sulfate dosage / g

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PUM

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Abstract

The invention relates to a water injection well on-line profile control agent prepared from oil field sewage treatment waste residues and belongs to the technical field of oil field chemical industry. The water injection well on-line profile control agent prepared from the oil field sewage treatment waste residues comprises the following components in part by weight: 100 parts of sand, 15 to 30 parts of cement, 0.1 to 0.3 part of adhesion accelerator, 1 to 3 parts of emulsifying agent, 0.5 to 0.8 part of suspending agent and 0.5 to 2 parts of reinforcing agent. By the water injection well on-line profile control agent prepared from the oil field sewage treatment waste residues, the discharging amount of the sand from the oil field is reduced; oil production efficiency is improved; environment is protected; and water treatment basically reach zero pollution.

Description

technical field [0001] The invention relates to an on-line profile control agent for water injection wells prepared by utilizing oilfield sewage treatment waste residue, and belongs to the technical field of oilfield chemical industry. Background technique [0002] With the development of oil wells and the exploitation of oil in my country, the exploitation of oil in my country has entered the stage of high water and low oil. Now oil wells produce a large amount of sewage. Generally, the sediment and polymers in these sewage are sedimented and separated, and then the It is injected back into the oil well as injection water and the polymer solution prepared with it is then injected into the oil well, so that it can be effectively utilized, so as to achieve the purpose of saving water and realizing resource utilization. But now with the increase of the amount of water, the water contains a large amount of inorganic ions such as calcium ions, magnesium ions, bicarbonate ions, wh...

Claims

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Application Information

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IPC IPC(8): C09K8/467
Inventor 曾琛
Owner 曾琛