A kind of wax prevention and dewaxing equipment used in petroleum production

An equipment and wax prevention technology, applied in drilling compositions, wellbore/well components, detergent compositions, etc., can solve the problem of insufficient wax removal, and achieve the extension of wax removal cycle, reduction of labor costs, and investment in The effect of large output ratio

Active Publication Date: 2022-02-25
华运隆腾机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wax scraper or wax scraper hook to scrape off the paraffin deposits on the pipe wall. This method has been used for decades. In some oil fields, the effect is quite good, but in some oil fields, it also exposes its clear wax. Disadvantages of insufficient quantity

Method used

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  • A kind of wax prevention and dewaxing equipment used in petroleum production
  • A kind of wax prevention and dewaxing equipment used in petroleum production
  • A kind of wax prevention and dewaxing equipment used in petroleum production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of anti-wax and wax-removal equipment used in petroleum production, 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 line...

Embodiment 2

[0025] The anti-wax and wax-removing equipment used in oil production 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:

[0026]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 achie...

Embodiment 3

[0030] 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 an anti-wax and wax-removing equipment used in petroleum production. The wax-preventing and wax-removing equipment is equipped with a wax-repelling agent, which can reduce wax removal measures and costs, save hot washing oil, protect the oil layer; reduce wax To prevent stuck accidents, ensure balanced production and smooth implementation of the plan. After taking wax prevention measures, there is little wax attached to the inner wall of the tubing, and well flushing can be carried out together with other measures, thereby reducing the number of pumping times, wax removal time and workload, and reducing oil pumping Equipment and oil well damage; anti-wax measures can reduce the load on the up and down strokes of the sucker rod, reduce the motor current, and save energy consumption.

Description

technical field [0001] The invention relates to the field of petroleum machinery, in particular to a wax prevention and wax removal equipment used in petroleum production. Background technique [0002] When crude oil is mined from the ground to the ground, due to significant changes in geological conditions such as pressure and temperature, some of the paraffin wax originally dissolved in the oil will precipitate and adhere to the inner wall of the crude oil gathering and transportation pipeline. Decline, the flow rate decreases, and in severe cases, it will cause blockage of the oil pipeline. [0003] Oil well wax removal and control technologies commonly used in oil fields mainly include mechanical wax removal technology, thermal wax removal and control technology, surface energy technology, chemical agent wax removal and control technology, magnetic wax control technology and microbial wax removal and control technology. The principle of mechanical wax removal and mechan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B37/06E21B37/02C09K8/524C11D7/40C11D7/60
CPCE21B37/02E21B37/06C09K8/524C11D7/40
Inventor 花金年
Owner 华运隆腾机械制造有限公司
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