阅读说明：本技术 一种石油开采过程防止石油蜡化的方法 (Method for preventing petroleum from waxing in petroleum exploitation process ) 是由 姜波 杨诚 翟丽杰 娄世龙 于 2021-09-14 设计创作，主要内容包括：一种石油开采过程防止石油蜡化的方法,本发明涉及一种石油开采过程防止石油蜡化的方法。本发明是要解决水或者油为热载体进行清防蜡成本设备费用高,对参数要求高,耗时耗能的问题。采用地下自然热源通过热传导载体防止石油蜡化。利用自然热源为抽油芯管提供温度补充,提高抽油芯管温度,能够防止设备出现蜡沉积,而且不采用外部能源,大大节约了能耗。(The invention discloses a method for preventing petroleum from waxing in a petroleum exploitation process, and relates to a method for preventing petroleum from waxing in a petroleum exploitation process. The invention aims to solve the problems of high equipment cost, high requirement on parameters, time consumption and energy consumption in wax removal and prevention by using water or oil as a heat carrier. The petroleum wax is prevented by using underground natural heat source and heat conduction carrier. The oil pumping core pipe temperature compensation device has the advantages that natural heat sources are utilized to provide temperature compensation for the oil pumping core pipe, the oil pumping core pipe temperature is improved, wax deposition of equipment can be prevented, external energy sources are not adopted, and energy consumption is greatly saved.)

1. A method for preventing petroleum from waxing in the petroleum exploitation process is characterized in that: the petroleum wax is prevented by using underground natural heat source and heat conduction carrier.

2. The method of claim 1 for preventing waxing of oil during oil recovery, wherein: the underground natural heat source is underground high-temperature rock mass heat.

3. The method of claim 1 for preventing waxing of oil during oil recovery, wherein: the graphite sheet is wrapped on the outer wall of the oil pumping core pipe to serve as a heat conduction carrier of an underground natural heat source, and the outer layer is wrapped with a heat insulation material.

4. The method of claim 1 for preventing waxing of oil during oil recovery, wherein: an outer sleeve steel pipe is arranged outside the oil pumping core pipe, a spiral support frame is arranged between the outer sleeve steel pipe and the oil pumping core pipe to form a cavity, and a high-thermal-conductivity composite material is filled in the cavity to serve as a thermal conduction carrier.

5. The method of claim 4, wherein the petroleum extraction process is characterized by the steps of: the outer sleeve steel pipe is made of stainless steel.

6. The method of claim 4, wherein the petroleum extraction process is characterized by the steps of: the high-thermal-conductivity composite material is a SiC nanowire.

Technical Field

The invention relates to a method for preventing petroleum from waxing in the petroleum exploitation process.

Background

In the process of oil exploitation, the depth generally reaches about 3000 meters, the temperature of the bottommost end of an oil well is highest, and the temperature is gradually reduced towards the earth surface; and the oil well generally reaches crude oil solidification temperature when more than 1000 meters are deep, and the wax deposition condition easily appears in the pipe wall of equipment such as oil pipe, oil-well pump, sucker rod, and this will make oil well output reduce to can increase energy resource consumption, can reduce equipment life even, increase ground transportation system load, it is huge to pump harm, influence the load of hanging point, can make the oil field stop production even.

The method uses water or oil as heat carrier to transfer heat energy into the shaft to raise the temperature of the shaft, melts the wax deposited on the pipe wall, oil pump and other places, and takes the wax out of the shaft by fluid, thus realizing the purpose of removing and preventing the wax.

Disclosure of Invention

The invention aims to solve the problems of high equipment cost, high requirement on parameters, time consumption and energy consumption in the process of petroleum exploitation in order to solve the problem that the wax removal and prevention by using water or oil as a heat carrier is high.

The invention relates to a method for preventing petroleum from waxing in the petroleum exploitation process, which adopts an underground natural heat source to prevent petroleum from waxing through a heat conduction carrier.

The invention has the beneficial effects that:

the invention utilizes natural heat source to provide temperature supplement for the oil pumping core pipe, improves the temperature of the oil pumping core pipe, can prevent wax deposition of equipment, does not adopt external energy, and greatly saves energy consumption.

Detailed Description

The first embodiment is as follows: the method for preventing petroleum from waxing in the petroleum exploitation process adopts an underground natural heat source and a heat conduction carrier to prevent petroleum from waxing.

The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: the underground natural heat source is underground high-temperature rock mass heat. The rest is the same as the first embodiment.

The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the graphite sheet is wrapped on the outer wall of the oil pumping core pipe to serve as a heat conduction carrier of an underground natural heat source, and the outer layer is wrapped with a heat insulation material. The other is the same as in the first or second embodiment.

The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: an outer sleeve steel pipe is arranged outside the oil pumping core pipe, a spiral support frame is arranged between the outer sleeve steel pipe and the oil pumping core pipe to form a cavity, and a high-thermal-conductivity composite material is filled in the cavity to serve as a thermal conduction carrier. The others are the same as in one of the first to third embodiments.

The fifth concrete implementation mode: the difference between this embodiment and one of the first to fourth embodiments is: the outer sleeve steel pipe is made of stainless steel. The other is the same as one of the first to fourth embodiments.

The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is: the high-thermal-conductivity composite material is a SiC nanowire. The other is the same as one of the first to fifth embodiments.

The following examples were used to demonstrate the beneficial effects of the present invention:

the first embodiment is as follows: the method for preventing petroleum from waxing in the petroleum exploitation process adopts graphite sheets wrapped on the outer wall of an oil pumping core pipe as a heat conduction carrier of an underground natural heat source, and the outer layer is wrapped with a heat insulation material.

The heat conductivity coefficient of the graphite sheet is 800-1000 (W/(m.K)), and the heat insulation material is an inorganic flexible heat insulation material.

The oil pumping core pipe temperature can be improved, wax deposition of equipment can be prevented, external energy is not adopted, and energy consumption is greatly saved. The defect caused by manual water heating is overcome.