Highly effective viscosity-reducing agent for thermodynamic oil extraction process
A technology for thermal oil recovery and viscosity reducing agent, which is applied to drilling compositions, chemical instruments and methods, etc., can solve the problems of practical application of difficult thermal oil recovery technology, poor solubility of layered asphaltenes, limited viscosity reduction ability, etc. Achieve the effect of solving the problem of the timeliness of the agent, improving the ultimate recovery factor, and reducing the viscosity and pour point.
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Embodiment 1
[0045] The present invention is a kind of high-efficiency viscosity reducer that is used for thermal oil recovery process, and it is made up of the raw material of following weight percent:
[0046] 1) Biphenyl 4%;
[0047] 2) Diesel 35%;
[0048] 3) Sodium alkyl sulfonate 18%;
[0049] 4) Fusel oil 5%;
[0050] 5) Ethylene glycol butyl ether 10%;
[0051] 6) Alkylphenol formaldehyde resin 2%;
[0052] 7) Performic acid 0.5%,
[0053] Dicumyl peroxide 0.5%;
[0054] 8) Urea 20%;
[0055] 9) Cyclopentanone 5%
[0056] The content of chlorine element and sulfur element in the diesel oil is less than one thousandth. The high-efficiency viscosity reducer used in the thermal oil recovery process of the present invention is prepared by mixing the above-mentioned raw materials at normal temperature and pressure.
Embodiment 2
[0058] The present invention is a kind of high-efficiency viscosity reducer that is used for thermal oil recovery process, and it is made up of the raw material of following weight percent:
[0059] 1) Naphthalene 0.1%;
[0060] 2) 97.7% of natural aggregates of hydrocarbons in granular state at room temperature;
[0061] 3) Alkyltrimethylammonium chloride 0.1%;
[0062] 4) Fusel oil 0.5%;
[0063] 5) Diethylene glycol ethyl ether 0.5%;
[0064] 6) Polyacrylate 0.1%;
[0065] 7) Ammonium carbonate 0.5%;
[0066] 8) Cyclopentanone 0.5%;
[0067] The content of chlorine element and sulfur element in the hydrocarbon natural aggregates in granular state at normal temperature is less than 1 / 1000. The high-efficiency viscosity reducer used in the thermal oil recovery process of the present invention is prepared by mixing the above-mentioned raw materials at normal temperature and pressure.
Embodiment 3
[0069] The present invention is a kind of high-efficiency viscosity reducer that is used for thermal oil recovery process, and it is made up of the raw material of following weight percent:
[0070] 1) Methylnaphthalene 1%;
[0071] 2) Emulsified diesel oil 89%;
[0072] 3) Polyoxyethylene alkylphenol ether carboxylic acid sodium salt 1%;
[0073] 4) Fusel oil 1%;
[0074] 5) Diethylene glycol butyl ether 1%;
[0075] 6) Polyvinyl carboxylate 1%;
[0076] 7) Dibenzoyl peroxide 2%;
[0077] 8) Ammonium bicarbonate 2%;
[0078] 9) Hexanone 2%;
[0079] The contents of chlorine element and sulfur element in the emulsified diesel oil are less than one thousandth. The high-efficiency viscosity reducer used in the thermal oil recovery process of the present invention is prepared by mixing the above-mentioned raw materials at normal temperature and pressure.
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