JP2022141390A5 - Heavy oil recovery method, recovery system, and recovery device - Google Patents

Description

The present invention relates to a heavy oil recovery method , recovery system , and recovery device .

Further, the surfactant has low hydrophilicity and high lipophilicity, and a numerical value (HLB) indicating the balance between the hydrophilicity and the lipophilicity of the surfactant is less than 20. suitable .

A recovery system for emulsifying and recovering heavy oil according to claim 6 includes: a pipe through which the heavy oil flows; and water in an amount of 10% by weight or more and 45% by weight or less based on the heavy oil; an addition means for adding 0.5% by weight or more and 5% by weight or less of a surfactant; a stirring means for stirring the heavy oil, the water, and the surfactant; and stirring with the stirring means to form an emulsion. and a pump means for recovering the converted heavy oil.

Further, it is preferable that the heavy oil recovery ship has a transfer means for further transferring the stored heavy oil to a heavy oil carrier.
A heavy oil recovery device according to claim 15 is a recovery device that emulsifies and recovers heavy oil, and includes a pipe attached to a heavy oil tank containing the heavy oil, and a tip end of the pipe. an ejector provided in the section, a working fluid supply pipe connected to the ejector, and a high-pressure pump that supplies water and a surfactant as working fluid to the ejector via the working fluid supply pipe; The heavy oil recovery apparatus is characterized in that the water and the surfactant are added to the heavy oil to form an emulsion, and the emulsion is recovered via the piping.
Here, it is preferable to include an addition means for adding 10% by weight or more to 45% by weight of the water and 0.5% to 5% by weight of the surfactant to the heavy oil. It is.
Further, the addition means includes a mixing tank for pre-mixing the water and the surfactant, and supplies the mixed solution of the water and the surfactant mixed in the mixing tank to the ejector via the high-pressure pump. It is preferable to lead to
Further, it is preferable that the ejector that sucks the heavy oil has a heating means for preheating the working fluid.

Further, the heavy oil recovery ship has a transfer means for further transferring the stored heavy oil to a heavy oil carrier, so that the heavy oil can be recovered while the heavy oil is being recovered by the heavy oil recovery ship. The heavy oil can be efficiently transported by the heavy oil carrier.
According to the heavy oil recovery device of the present invention, the recovery device emulsifies and recovers heavy oil, and includes a pipe attached to a heavy oil tank containing the heavy oil, and a tip end of the pipe. a high-pressure pump that supplies water and surfactant as working fluid to the ejector via the working fluid supply piping; Adding the water and the surfactant to the heavy oil to form an emulsion and collecting the emulsion through the piping reduces the viscosity of the heavy oil and facilitates processing such as recovery of the heavy oil. Can be done.
Here, by providing an addition means for adding 10% to 45% by weight of the water and 0.5% to 5% by weight of the surfactant to the heavy oil, In particular, when mixing heavy oil, water, and a surfactant to form an emulsion, the viscosity of the heavy oil can be rapidly reduced and the emulsion can be formed within a range where transition occurs, so it is highly effective in effectively reducing viscosity. . It can also improve work efficiency, reduce costs, and help protect the environment.
Further, the addition means includes a mixing tank for pre-mixing the water and the surfactant, and supplies the mixed liquid of the water and the surfactant mixed in the mixing tank to the ejector via the high-pressure pump. By directing the oil to the oil, it is possible to more quickly recover the heavy oil whose viscosity has been reduced.
Further, by providing the ejector that sucks the heavy oil with a heating means for preheating the working fluid, the viscosity of the heavy oil is further reduced, and processing such as recovery of the heavy oil is made easier. be able to.

Pump 106 is a means for applying pressure to heavy oil. The pump 106 is not particularly limited, but can be, for example, a jet pump or an ejector (vacuum) pump. The ejector pump includes a heating section and a jet section, and by injecting heated working fluid as steam at high speed, the fluid on the high vacuum side is drawn into the injected steam and flows from the upper jet section to the lower jet section. This is a pump that compresses fluid by transporting it and discharges it from the outlet . In addition, when a jet pump or an ejector (vacuum) pump is used, the pump 106 can serve as the emulsion unit 102, and can also serve as the injection nozzle 14. In this way, by using a jet pump or an ejector (vacuum) pump, it is also possible to integrate the stirring function, pump function, and injection (addition) function. In addition, as the driving fluid, a mixed liquid of water and surfactant pressurized by the pump 16, a separate supply of water and surfactant, pressurized water, and a separately generated heating liquid are used. It can be steam, etc. It is preferable that the pump 106 be disposed downstream of the injection nozzle 14 of the emulsion unit 102 along the flow direction of the heavy oil. The pump 106 is provided, for example, at the tip or midway of the recovery pipe 104. By applying pressure to the heavy oil with the pump 106, a flow is formed in the heavy oil heading from the emulsion unit 102 to the recovery vessel 200 via the recovery piping 104, and the heavy oil is recovered. Further, the pump 106 may be used as one of the stirring means for stirring the heavy oil, water, and surfactant within the main body 10. The rating of the pump 106 may be determined as appropriate depending on the type, amount, etc. of heavy oil to be recovered.

Claims (18)

A recovery method for recovering heavy oil by emulsifying it,
The viscosity is lowered by adding 10% to 45% by weight of water and 0.5% to 5% by weight of a surfactant to the heavy oil and stirring to form an emulsion. A method for recovering heavy oil, which is characterized by recovering heavy oil. The heavy oil recovery method according to claim 1 ,
A method for recovering heavy oil, wherein the heavy oil is a substance having a viscosity of 50 mPa·s or more. The heavy oil recovery method according to claim 1 or 2 ,
A method for recovering heavy oil, comprising heating the heavy oil in advance to lower the viscosity before adding the water and the surfactant. The method for recovering heavy oil according to any one of claims 1 to 3 , comprising:
The surfactant has low hydrophilicity and high lipophilicity, and a numerical value (HLB) indicating the balance between the hydrophilicity and the lipophilicity of the surfactant is less than 20. A method for recovering heavy oil. The method for recovering heavy oil according to any one of claims 1 to 4 , comprising:
A method for recovering heavy oil, the method comprising: agitating the heavy oil after the heavy oil is pulverized by spraying the water and the surfactant. A recovery system that emulsifies and recovers heavy oil,
a pipe through which the heavy oil flows;
Addition means for adding 10% to 45% by weight of water and 0.5% to 5% by weight of a surfactant to the heavy oil;
a stirring means for stirring the heavy oil, the water, and the surfactant;
A heavy oil recovery system comprising: pump means for recovering the heavy oil that has been stirred and emulsified by the stirring means. The heavy oil recovery system according to claim 6 ,
A heavy oil recovery system, wherein the addition means includes a high-pressure injection nozzle that injects the water and the surfactant toward the heavy oil flowing inside the pipe. The heavy oil recovery system according to claim 7 ,
The addition means includes a mixing tank for pre-mixing the water and the surfactant, and supplies the liquid mixture of the water and the surfactant mixed in the mixing tank to the high-pressure injection nozzle via a high-pressure pump. A heavy oil recovery system characterized by The heavy oil recovery system according to any one of claims 6 to 8 ,
A heavy oil recovery system characterized in that the stirring means includes a stirrer in which a propeller is disposed inside the pipe downstream of the addition means. The heavy oil recovery system according to any one of claims 6 to 9 ,
A heavy oil recovery system characterized in that, as the stirring means, the pump means also has a stirring function. The heavy oil recovery system according to any one of claims 6 to 10 ,
A heavy oil recovery system, characterized in that a preheating means for preheating the heavy oil is provided at the tip of the pipe that sucks the heavy oil. The heavy oil recovery system according to any one of claims 6 to 11 ,
Flow rate detection means for detecting the flow rate of the heavy oil passing through the inside of the piping;
A heavy oil recovery system comprising a control means for controlling the amounts of the water and the surfactant added by the addition means in accordance with the flow rate of the heavy oil detected by the flow rate detection means. . The heavy oil recovery system according to any one of claims 6 to 12 ,
The piping is attached to a heavy oil tank containing the heavy oil in a sunken ship located below the water surface,
The addition means, the stirring means, and the pump means are provided at the tip of the piping on the heavy oil tank side,
A heavy oil recovery system characterized in that the recovered heavy oil is transported to and stored in a heavy oil recovery vessel facing the water surface. The heavy oil recovery system according to claim 13 ,
A heavy oil recovery system, wherein the heavy oil recovery ship has a transfer means for further transferring the stored heavy oil to a heavy oil carrier. A recovery device that emulsifies and recovers heavy oil,
A pipe attached to the heavy oil tank containing the heavy oil, an ejector provided at the tip of the pipe, a working fluid supply pipe connected to the ejector, and the ejector via the working fluid supply pipe. and a high-pressure pump that supplies water and a surfactant as working fluids to the heavy oil, and the ejector adds the water and the surfactant to the heavy oil, emulsifies the oil, and collects the emulsion through the piping. Heavy oil recovery equipment. The heavy oil recovery device according to claim 15,
The heavy oil is characterized by being equipped with an addition means for adding 10% to 45% by weight of the water and 0.5% to 5% by weight of the surfactant to the heavy oil. Quality oil recovery equipment. The heavy oil recovery device according to claim 16,
The addition means includes a mixing tank for pre-mixing the water and the surfactant, and guides the liquid mixture of the water and the surfactant mixed in the mixing tank to the ejector via the high-pressure pump. A heavy oil recovery device characterized by: The heavy oil recovery device according to any one of claims 15 to 17,
A heavy oil recovery device characterized in that the ejector that sucks the heavy oil has heating means for preheating the working fluid.