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Oil-water two-phase flow drag reducer
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of drag reducer and phase flow, which is applied in the field of polymer compound composition and pipeline system, can solve the problems of large investment, reduced production, long cycle, etc., and achieve the effects of stable performance, convenient use and obvious drag reduction effect
Active Publication Date: 2011-05-25
BC P INC CHINA NAT PETROLEUM CORP +2
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Abstract
Description
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Problems solved by technology
When the liquid production of the oil well is greater than the transportation capacity of the gathering pipeline, it is necessary to increase the transportation capacity of the pipeline, otherwise it will cause production suppression and affect the production of the oil field
Increasing the delivery capacity of the pipeline can be achieved by installing an oil delivery pump and increasing the delivery pressure. Such measures require a large investment and a long cycle. It will be convenient and economical to add oil-water two-phase flow drag reducer to the pipeline to increase the delivery capacity. much
Method used
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Effect test
Embodiment 1
[0012] Embodiment 1. This example is formulated according to the following composition and proportioning principle: it is made up of oil-soluble polymer, water-soluble polymer, water-soluble demulsifier and solvent, is 100 with gross weight, and oil-soluble polymer accounts for 5%~ 15%, water-soluble polymer accounts for 5%-15%, water-soluble demulsifier accounts for 10%-20%, and appropriate amount of solvent.
[0013] The oil-soluble polymer is a homopolymer or copolymer of α-olefins with 3 to 30 carbon atoms, and the number average molecular weight is above 5 million.
[0014] Among them, the water-soluble polymer is polyethylene oxide and cationic modified starch, and the molecular weight is above 3 million.
[0015] Wherein the water-soluble demulsifier is ethylene oxide propylene oxide block copolymer, the content of ethylene oxide in the polymer is 30%-45%, and the average molecular weight of the polymer is less than 1500.
[0016] Wherein the monohydric alcohol in the ...
Embodiment 2
[0027] Embodiment 2. This example is prepared according to the composition and proportioning principles described in Embodiment 1.
[0028] Specifically, add 550 milliliters of isooctyl alcohol and 150 milliliters of polyoxyethylene-oxypropylene block polyether (average molecular weight is 1100) in a 1-liter high-speed disperser and mix evenly, add 100 grams of polydodecene powder, the particle size is less than 200 Micron, then add 100 grams of polyethylene oxide powder, the particle size is less than 30 microns, and disperse at high speed for 5 minutes to form a uniform slurry. The drag reduction rate test method and device are the same as in Example 1. Through actual calculation, the drag reduction rate of this product is 23%.
Embodiment 3
[0029] Embodiment 3. This example is prepared according to the composition and proportioning principles described in Embodiment 1.
[0030] Specifically, add 550 milliliters of isooctyl alcohol and 150 milliliters of propylene glycol to a 1-liter high-speed disperser and mix evenly, add 100 grams of polydodecene powder with a particle size of less than 200 microns, and then add 100 grams of polyethylene oxide powder with a particle size of less than 30 microns. Micron, disperse at high speed for 5 minutes to form a uniform slurry. The drag reduction rate test method and device are the same as in Example 1. Through actual calculation, the drag reduction rate of this product is 19%.
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Abstract
The invention provides an oil water two-phase flow drag reducer, which relates to the technical field of a macromolecular compound composite and a pipeline system. The oil water two-phase flow drag reducer is characterized in that the drag reducer consists of an oil-soluble polymer, a water-soluble polymer, a water-soluble demulsifier and a solvent; if the total weight is counted as 100, a poly alpha olefin and copolymers thereof which are used as the oil-soluble polymer account for 5 to 15 percent, a polyethylene oxide or cation modified starch which is used as the water-soluble polymer accounts for 5 to 15 percent, an ethylene oxide propylene oxide block copolymer which is used as the water-soluble demulsifier accounts for 10 to 20 percent, and monobasic alcohol, polybasic alcohol, or ethylene glycol monoether or mixed solution is used as the solvent with the solution density of 0.87 to 0.90g / ml. The oil water two-phase flow drag reducer has good drag reducing effect, stable performance, high economical efficiency and convenient use.
Description
technical field [0001] The invention is an oil-water two-phase flow drag reducer. It relates to the technical field of polymer compound composition and pipeline system. Background technique [0002] Oil phase drag reducer is a chemical additive used in crude oil and refined oil pipeline transportation. Dissolving in oil products can reduce the resistance of oil products in turbulent flow, increase the flow rate and thus increase the pipeline throughput. This method does not need to increase the pipeline It is a convenient and economical way to adjust the pipeline transportation volume. The oil phase drag reducer is usually polyalphaolefin and its copolymer and high molecular weight polyacrylic acid high carbon alcohol ester. When the oil-phase drag reducer in the pipeline is purely crude oil or refined oil, it can ensure a relatively high drag reduction or increase the transmission effect, but if the pipeline transport medium is an oil-water mixture, the drag reduction effe...
Claims
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Application Information
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