A new type of petroleum wax removal device

A technology for removing equipment and petroleum wax, which is applied in the direction of cleaning equipment, wellbore/well parts, chemical instruments and methods, etc., can solve problems such as complex process and management, loss of economic benefits in oil fields, and increased cost of hot washing, etc., to achieve extended Effects of cleaning cycle, reduction of sewage discharge, and labor cost reduction

Active Publication Date: 2021-12-21
奥宸科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the four types of wax removal methods, electric heating wax removal is the most effective wax removal and anti-wax measure, but it is expensive and unsafe.
Organic solvent wax removal mostly uses mixed benzene and light hydrocarbons, the effect of wax removal is very good, but the disadvantage is that it is flammable and explosive, and the price is high
Chemical cleaning and anti-wax have good effect, low cost, safety and reliability, appropriate selection of drugs, and good effect, but the process and management are complicated
[0004] At present, hot oil wax removal vehicles are widely used in our oilfields, but the cost is high. On the one hand, a large amount of diesel oil needs to be burned, and on the other hand, a large amount of equipment is required, including two tank cars, one wax removal vehicle, and a group of people. The second is that water is used as a carrier during hot washing in the oil field, which not only seriously pollutes the formation, but also requires 2-3 days for pumping water to resume normal production after each washing. A rough calculation of a well hot washing takes 4000- The cost is 5,000 yuan. Some wells deposit wax quickly, and they need to be hot-washed once every 7-15 days. Ordinary wells also need to be washed once a month. The increase in the cost of hot-washing will bring great losses to the economic benefits of the oil field.

Method used

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  • A new type of petroleum wax removal device
  • A new type of petroleum wax removal device
  • A new type of petroleum wax removal device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A new type of petroleum wax removal device, such as figure 1 As shown, including rope cap, control room, main control board, power module, first motor, coupling, swivel head, second motor, linear guide, slide table, tool assembly, liquid supply system, end cover, seal centralizer ring. The rope cap is located at the uppermost end of the wax remover, and the lower end is connected to the control room, which is a hollow cylindrical structure, and the main control board, the power module, the first motor and the shaft coupling are arranged in sequence inside it , the main control board includes a wireless transmission module for signal transmission with an external controller, the power supply module supplies power to all electrical components of the wax remover, and the first motor is connected to the rotary head through a coupling , the rotating head is a hollow cylindrical structure, inside which is provided with a second motor and a linear guide rail connected in sequ...

Embodiment 2

[0026] The device can choose to use different working modes according to the clogging degree of the petroleum pipeline. The working mode can be set according to the clogging degree of the petroleum pipeline. The working mode includes but not limited to the following two working modes:

[0027]General cleaning mode. When the blockage of the oil pipeline to be cleaned is not serious, the cutter assembly is in an open state, the second motor drives the slide table to move forward, and the wax removal knife is opened in the circumferential direction, and the spring can make the cutter head of the wax removal knife self-adaptive to different Diameter of the oil pipeline, and make the cutter head tightly fit on the inner wall of the oil pipeline; then, the liquid supply system starts to work continuously, and sprays the new wax preventive agent through the second nozzle group and adheres to the paraffin on the pipe wall , to achieve anti-wax treatment on the pipe wall after wax remo...

Embodiment 3

[0031] One of the main causes of wax deposition on the inner wall of the pipeline is that the crude oil absorbs the wax through the film. Specifically, when the oil-water emulsion contacts the oil pipe and the surface of the equipment, two types of orientation layers are usually formed, namely, a hydrophobic orientation layer and a hydrophilic orientation layer. . On the one hand, oil-soluble surfactants in hydrocarbons are adsorbed by the surface of oil pipes or equipment, forming an orientation layer with hydrophobic tendency and a crude oil film; on the other hand, when the crude oil film contacts with water without surfactant rupture, forming a hydrophilic alignment layer on its surface. At this time, a large amount of surfactants in hydrocarbons that have not been adsorbed by the metal surface begin to adsorb on this new oil-water interface in the form of hydrophilic groups absorbing water and hydrophobic groups absorbing oil, thus forming a double-layer surface active ag...

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PUM

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Abstract

The invention provides a new type of petroleum wax removal device, which can realize wax removal processes such as wax breaking, wax removal, and wax prevention at one time. Environmentally friendly wax removal process. During the process of wax removal, chemical wax removal softens the wax layer to achieve high efficiency of mechanical wax removal, and softens the wax layer through chemical wax removal to protect the wax removal cutter head. Anti-wax and wax-removing treatment can remove dead corners and residual wax that cannot be touched by the cutter head.

Description

technical field [0001] The invention relates to the field of petroleum machinery, in particular to a novel petroleum wax removal device. Background technique [0002] In the production process of crude oil fields, wax deposition in oil wells is an important reason affecting the production of oil wells. Implementing wax removal and anti-wax measures for wax deposition wells is one of the main means to ensure the normal production of high wax content wells. There are many types of oil well wax removal and wax removal, which can be divided into electric heating wax removal, organic solvent wax removal, chemical agent removal, wax removal and hot oil wax removal car wax removal. [0003] Among the four types of wax removal methods, electric heating wax removal is the most effective wax removal and anti-wax measure, but it has disadvantages such as high cost and unsafety. Organic solvent wax removal mostly uses mixed benzene and light hydrocarbons, and the wax removal effect is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B37/06E21B37/02C09K8/528C09K8/524
CPCE21B37/02E21B37/06C09K8/524C09K8/528
Inventor 钱正楠
Owner 奥宸科技有限公司
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