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High-Efficiency Self-Excited

Resonance Anti-Wax and Anti-Scale Equipment

High-efficiency self-excited resonance wax and scale prevention technology is a scientific and technological innovation product used in oil wells to prevent wax and scale formation in the wellbore. After a large number of practical applications on site, it has achieved good results. It completely replaces traditional wax prevention technologies such as hot washing, chemical washing, and strong magnetic, greatly reducing production costs, improving production well efficiency, extending pump inspection cycles, and saving energy by about 10% to 20%, with considerable economic benefits. This technology is simple to use, efficient, energy-saving, and environmentally friendly.

This product has two models:

1. JZFL-I:

Applicable to oil wells with viscosity ≤1,000mPa.s (50℃) and freezing point less than 35℃;

2. JZFL-II:

Applicable to oil wells with viscosity ≤30,000mPa.s

(50℃) and freezing point less than 45℃.

CONNECTING

1. For rod pumps, it is generally connected below the pump with an oil pipe in between. 2. For rodless pumps, if there is a scaling problem, it must be connected below the pump with an oil pipe in between. If there is no scaling problem, it can be connected below the pump or connected to the pump with an oil pipe between it and the pump, but it must be installed below the oil drain valve and separated from it by an oil pipe, because this tool cannot be used for positive circulation well washing, well killing and other operations. 3. The connection of the production string shall be subject to the design.

Schematic Diagram of The Rod Pump Tool Connected to the Wellbore Structure

Schematic diagram of the wellbore structure with the rodless pump tool

connected to the pump

Schematic Diagram of The Wellbore Structure

With the Rodless Pump Tool Connected to The Pump

Product Technical Principles and Technical Parameters---Wax Plugging Formation Mechanism

Wax plugging formation mechanism: Due to the stratification and anisotropy of oil-bearing strata, the original production fluid seeps out from different production layers and naturally presents the phenomenon of "like attracts like" in front of the pump, with each phase clumping together and enriched; during the gradual rise in the oil pipe, as the temperature and pressure decrease, it presents a state of segregation, aggregation and biased flow.

Product Technical Principles and Technical Parameters---Product Technical Principles

Changes in flow state. During the lifting process of the rod pump well, the oil, gas and water three-phase flow in the tubing changes from a segregated, aggregated and biased flow state to a mutually enveloping and shielded three-phase bubble flow after being treated by the "anti-wax and anti-scaling device", which is emulsified.

Original ecological liquid before treatment

Original ecological liquid after treatment

Technological Innovation

Shear oscillation vortex flow mixed phase technology Self-excited resonance atomization pulse technology Multi-jet impact atomization technology Ultrasonic cavitation technology Multi-stage turbocharging technology

Innovation

Innovation 1: Shear Oscillation Vortex Flow Mixed Phase Technology

Through the shearing action and high-frequency oscillation of the oil, gas and water produced liquid, the produced liquid forms a vortex flow state, breaking the enrichment conditions of wax crystals and scale crystals, and the oil, gas and water produced liquid forms a good mixed phase effect. By dispersing wax molecules or wax crystal clusters and scale crystal clusters, the segregation and aggregation of wax crystals or scale crystals are eliminated.

Innovation 2: Self-Stimulated Resonant Atomization Pulse Technology

Self-excited resonant atomization pulse technology is based on the principle of the Helmholtz resonant cavity, that is, the fluid relies on itself to generate vibrations in a specific structure without the need for any external excitation device. The fluid itself converts the initial oscillation of the jet into periodic energy with a certain frequency and amplitude through feedback and expansion in the resonant cavity. In this process, the energy of the fluid is gathered and intermittently released, and the instantaneous energy of the pulse jet is several times higher than that of the continuous jet.

Under the condition of constant pressure, the best oscillation effect, pulse jet effect and atomization effect can be achieved by optimizing parameters such as cavity diameter, cavity length, inlet and outlet nozzle diameters, etc.

The fluid enters the self-excited oscillation pulse generator, passes through the liquid inlet nozzle (zone 1), forms a vortex flow in zone 2, and forms a negative pressure zone in zone 4. A vortex flow is formed in the cavity and the fluid is atomized, and oscillation and collision are formed in zone 3. When the pressure in the cavity increases, the liquid enters the liquid outlet nozzle (zone 5), and the fluid is discharged through the self-excited liquid outlet nozzle, forming a pulse oscillation liquid flow, achieving the effect of flow state change and phase mixing.

Innovation 3: Multi-jet Impact Flow Atomization Technology

Using the principle of ramjet engine, the oil, gas and water three-phase flow is transformed into multiple jets, which are focused at one point after being ejected from the hole, and collide with each other in the axial and radial directions at the same time, so that all components in the three-phase flow are atomized, that is, dispersed, to achieve the "bubble flow" state of the oil, gas and water three-phase.

Innovation 4: Ultrasonic cavitation technology

When sound waves propagate in three-phase flow, the molecular distance increases when the wave trough reaches the flow, and "cavitation" will be generated between the molecules with increased distance. When the wave crest reaches the flow, the molecular distance is compressed, and the "cavitation" is instantly annihilated, while releasing powerful energy, causing large crystal clusters and large molecular clusters to crack, slip, and break, thus being dispersed, refined, and shielded and covered by different phases, fundamentally eliminating the conditions for wax and scale molecules to gather and block the well.

Innovation 5: Multi-stage turbocharging mixed-phase technology

The turbine consists of a set of moving wheels and a set of fixed wheels to form a basic stage. When the fluid flows through a basic stage, the internal pressure and temperature will increase. When the oil, gas and water three-phase flow flows through multiple basic stages, the internal pressure and temperature will increase significantly. At the same time, under the combined action of centrifugal force and boundary impact waves, the components in the oil, gas and water three-phase flow are extremely dispersed and emulsified, so that the wax scale molecular clusters and molecules are shielded and covered by different phases, making them lose the aggregation conditions.