High pour-point oil sludge profile control ground injection heating and heat preservation system and method
A technology of heating and heat preservation and high pouring oil, which is applied in chemical instruments and methods, earthwork drilling, isolation devices, etc., can solve the problems that high pouring oil sludge cannot be injected normally, and achieve the effect of harmless treatment
Pending Publication Date: 2021-10-22
PETROCHINA CO LTD
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[0005] One object of the present invention is to provide a high pouring oil sludge profile control ground injection heating and heat preservation system to solve the problem that high pouring oil sludge cannot be injected normally at room temperature
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[0049] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0050] Due to the oil properties of high pour point oil, the freezing point is high, and it is in a solid state at normal temperature. The ground must be heated and kept warm during injection. The problem that the high pour point oil sludge cannot be injected normally.
[0051] Specifically, combined with figure 1 , a high pour point oil sludge profile control surface injection heating and heat preservation system, comprising: a sludge profile control agent preparation device, a circulation heating device, a filtering device and an injection device;
[0052]The discharge port of the oil sludge profile control agent pre...
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The invention discloses a high pour-point oil sludge profile control ground injection heating and heat preservation system and a method. The invention provides a high pour-point oil sludge profile control ground injection heating and heat preservation system. The high pour-point oil sludge profile control ground injection heating and heat preservation system comprises an oil sludge profile control agent preparation device, a cyclic heating device, a filtering device and an injection device, wherein the oil sludge profile control agent preparation device comprises a first heating assembly and a first heat preservation assembly; the filtering device comprises a second heating assembly and a second heat preservation assembly. The invention also provides a high pour-point oil sludge profile control ground injection heating and heat preservation method. The high pour-point oil sludge profile control ground injection heating and heat preservation method comprises the following steps that (1) an oil sludge solution is prepared; (2) an oil sludge profile control agent is prepared; (3) the oil sludge profile control agent is heated circularly; and (4) filtering is achieved and the oil sludge profile control agent is injected into a measure well. Through five ground heating and heat preservation procedures, high pour-point oil is injected into the well in a good flow state, efficient implementation of a high pour-point oil sludge profile control well is guaranteed, harmless treatment of oil sludge discharge is achieved, and the high pour-point oil sludge profile control ground injection heating and heat preservation method plays a positive role in cost reduction and efficiency improvement of an oil field.
Description
technical field [0001] The invention relates to the technical field of oil recovery. More specifically, it relates to a heating and heat preservation system and method for ground injection of high pour point oil sludge profile control. Background technique [0002] At present, my country's oil fields have a high content of oily sewage and a large amount of sludge generated annually. The treatment of sludge is not only costly but also easy to cause environmental pollution. How to effectively use sludge and realize the transformation of "waste" into "treasure" is particularly important. [0003] The oil sludge profile control technology is a physical profile control of particle plugging, and its mechanism is mainly to improve the mobility ratio and physical plugging, and also has the functions of adsorption and residual resistance. Sludge with high pour point oil content has complex components and poor fluidity. Therefore, it is necessary to study and improve the sludge profi...
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Patent Timeline
Login to view more IPC IPC(8): E21B43/22E21B43/24E21B36/00C09K8/512
CPCE21B43/16E21B43/24E21B36/005C09K8/512C09K8/5083
Inventor 韩锋冷彪刘大伟周学金王肖杨轶博彭继明杨洪梅邵堃李松王帅
Owner PETROCHINA CO LTD
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