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Jet-type thick oil diluting and mixing tool

A jet-type, heavy oil technology, applied in fluid mixers, mixers, production fluids, etc., can solve problems such as slug flow, increased energy consumption of the pumping system, and waste of thin oil

Pending Publication Date: 2020-04-24
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the common problem of the mixer is that the mixing effect is not ideal, and the phenomenon of slug flow often occurs
In addition, the pressure drop of blending is relatively large, resulting in increased energy consumption of the oil pumping system, which not only increases the amount of thinner blended, but also causes a lot of waste of thin oil

Method used

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  • Jet-type thick oil diluting and mixing tool
  • Jet-type thick oil diluting and mixing tool
  • Jet-type thick oil diluting and mixing tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 1 to Figure 4 As shown, a jet-type thick oil mixed with dilute mixing tool includes an outer cylinder (1), a wing plate (2), an upper plug (41), a lower plug (42), and the outer cylinder (1 ) is provided with a thin oil port (5), and a first connection thread (11) and a second connection thread (12) are provided at both ends; a jet hole (3) is provided on the wing plate (2), two The wing plate (2) forming an included angle α together with the upper plug (41) and the lower plug (42) form a jet cavity. There are three groups of jet chambers, which are evenly distributed and fixed on the inner wall of the outer cylinder (1), arranged parallel to the geometric centerline (a) of the outer cylinder (1); and the jet holes (3) of the jet chamber ) total area is not greater than the thin oil port (5) area. Wherein, the upper plug (41) and the lower plug (41) are tapered structures; the thin oil port (5) is an A-shaped keyway structure.

[0040] Such as figur...

Embodiment 2

[0043] Such as Figure 5As shown, this embodiment is basically the same as Embodiment 1. The difference is that the jet cavity is composed of two parallel wings (2) (wing angle: α=0°), and the geometric center line of the jet cavity and the outer cylinder (1) (a) Arranged in a helical shape, the value range of the helix angle β of the wing plate: 45°≦β≦75°. The helix angle of the thin oil port (5) is the same as the helix angle β of the wing plate.

[0044] The existence of the wing plate helix angle β enables the heavy oil or mixed oil to form a circumferential rotation and cause a certain degree of turbulent flow during the upward return process, which is beneficial to further improve the mixing uniformity of the oil.

Embodiment 3

[0046] Such as Figure 6 As shown, this embodiment is basically the same as Embodiment 1. The difference is that: the jet cavity is helically arranged with the geometric center line (a) of the outer cylinder (1), and the value range of the helix angle β of the wing plate is: 45°≦β≦75°; The helix angle of the oil port is the same as the wing plate helix angle β. Moreover, there is no direct contact between the jet cavities, that is, the thick oil or mixed oil channels (jet mixing regions) separated by the jet cavities communicate with each other.

[0047] In this embodiment, the blending areas are connected, which is more suitable under the condition of low viscosity of heavy oil, or under the condition that secondary blending process is required in the lifting process of heavy oil. For oil with better fluidity, the solution adopted in this embodiment can further improve its fluidity, so as to fully utilize fluid kinetic energy and effectively improve the mixing effect.

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Abstract

The invention discloses a jet-type thick oil diluting and mixing tool, which comprises an outer cylinder, wing plates, an upper plug and a lower plug, a thin oil port is formed in the outer cylinder,and thread features are arranged at the two ends of the outer cylinder. Jet holes are formed in the wing plates, and the two wing plates forming an included angle alpha, the upper plug and the lower plug jointly form a jet cavity. The tool is characterized in that the jet cavity is fixed on the inner wall of the outer cylinder and is parallel to or spirally arranged with the geometric center lineof the outer cylinder; and the total area of the jet holes of the jet cavity is not greater than the area of the thin oil port. By means of the jet principle, thin oil and thick oil can be mixed morefully and evenly, so that the mechanical energy consumption of thick oil recovery is reduced, and the oil recovery efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oil extraction equipment, in particular to a heavy oil mixed with thinner mixing tool. Background technique [0002] Crude oil with higher viscosity has better fluidity under formation conditions, but after entering the wellbore, as the wellbore temperature decreases during the upward flow process, the viscosity of crude oil increases and the fluidity becomes poor. In severe cases, the oil pipe will be blocked, making the oil well unable to maintain production, or causing a significant increase in lifting resistance and a significant increase in mechanical energy consumption. [0003] Heavy oil blending is an important technology in heavy oil production. The mixing tool involved in this technology is a main tool for blending thin oil into heavy oil to reduce the viscosity of heavy oil. Hybrid tools are classified into static, dynamic, or combined dynamic / static. [0004] The so-called static tool means ...

Claims

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Application Information

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IPC IPC(8): B01F5/04E21B43/16
CPCE21B43/16B01F25/31423B01F25/31434B01F25/3141B01F2101/50
Inventor 任海涛田海萍周春晓张园杨迎新唐一鑫张灯
Owner SOUTHWEST PETROLEUM UNIV
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