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Nitrogen Injection Technology
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Overview

With the comprehensive development of oil and gas fields, the pressure of reservoir will decline, and the problem of water invasion in high-pressure gas wells has become very prominent. In order to increase the gas well production capacity and improve the effectiveness of comprehensive water control, water control measures must be taken. And according to the current production situation, organize and implement operations such as gas injection for energy replenishment, gas injection for water control.

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Nitrogen energy replenishment, water control technology
Nitrogen surfactant huff and puff technology
Nitrogen foam flooding and water injection composite flooding technology
Nitrogen flooding can reduce oil-water interfacial tension, which is beneficial to improving oil recovery efficiency; and the injected nitrogen can replenish reservoir energy and increase formation pressure.
Nitrogen foam flooding has a plugging and profile control effect. The foam first enters the high permeability layer, and the flow resistance will gradually increase. As the injection pressure increases, the foam can enter the low permeability layer in turn to increase the sweep coefficient.
Nitrogen surfactant composite huff and puff technology is mainly based on nitrogen huff and puff technology, adding surfactants for oil recovery. Under the high pressure of gas, the surfactants enter farther from the wellbore area, quickly stripping more crude oil from the pores to form a water-in-oil emulsion with lower viscosity, so as to improve the oil well huff and puff effect, extend the production cycle and improve the oil washing efficiency.
The service market is distributed in PetroChina Tarim Oilfield and Sinopec Northwest Oilfield, etc.
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SERVICE
Well Stimulation & EOR Services
Anton Well Stimulation & Efficiency Enhancement Center (WSEEC) focuses on the stimulation and development of new Wells, and the comprehensive treatment and efficiency enhancement of old Wells. By integrating the resources of the geological and engineering team, WSEEC provides integrated operation services and one-stop efficiency improvement technical services for oil and gas fields. Anton Well Stimulation & Efficiency Enhancement Technology Services （WSEETS）take geological research as a starting point to accurately diagnose and solve the problems in the production well of oil and gas fields. The WSEETS is covering the whole life cycle of oil and gas well, to solve various problems in the production process.
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Foaming Drainage
In the process of natural gas exploitation, with the deepening of gas field exploitation and the prolongation of gas well production time, tube and case pressure will continue to decline and formation energy will gradually decrease. When the gas well production decreases to a certain extent, the liquid carrying capacity will decrease, and the fluid accumulation in the well will gradually increase. The use of capillary precise bubble drainage technology can realize the intelligent, all-year, all-weather, remote automatic control and local manual control of the two modes of accurate injection to the bottom of the well to improve the production of gas Wells.
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SCP Treatment
With the increase of gas Wells, the problem of sustained casing pressure (SCP) is becoming more and more prominent. According to statistics, more than 60% of gas Wells have SCP Hazards. It is urgent to adopt new technologies to prevent and treatment the problem of the Wells.
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Heavy Oil Electric Heating
Anton electric heating technology mainly realizes the efficient conversion of electric energy to heat energy through electromagnetic induction and skin effect, so as to reduce the heat loss of heavy oil and high pour point oil in the production process and ensure the flow of crude oil. Anton Electric heating technical service has the service capabilities of program design, temperature field fitting, compensation power optimization, on-site operation and technical guidance. We have integrated technical service capabilities, including formation, wellbore, wellhead and surface gathering lines. We are committed to providing customers with safe, energy-saving and efficient electric heating technology services.
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Ultrasonic Atomizing Drainage
Ultrasonic cyclone atomization drainage technology is based on the atomization principle combined with the critical velocity theory, relying on the gas well's own energy, using the multiple functions of mechanical, pneumatic and ultrasonic atomization to achieve the purpose of liquid drainage and gas recovery. The application of this technology can improve the liquid carrying capacity of gas Wells, prevent the accumulation of liquid in low pressure gas Wells, and extend the production time of gas Wells.
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Fracturing Flooding EOR
"Fracturing" refers to hydraulic fracturing, "flooding" refers to chemical flooding. Fracturing flooding EOR technology has two types: forward and reverse. Forward F-F EOR technology, aiming at the extremely low permeability injection-production imbalance oil field, the remaining oil is difficult to recover Use of high flow rate and pressure equipment, pumping a large amount of water, to provide energy for the oil Wells, and improve the oil recovery. Reverse F-F EOR technology, the oil well is operated according to the mode of "fracturing - flooding - injection - production". After stimulation treatment, the injection well is restored to normal injection, so as to realize effective development of remaining oil.
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Reservoir Identification Technology
In the process of oil and gas exploitation, oil and gas layer identification is very important, which can solve various geological and engineering technical problems in oil exploration and development. It is an important means for discovering oil and gas layers, evaluating oil and gas resources and reservoir management. Anton oil and gas reservoir identification technology is to use logging data to analyze formation lithology and provide customers with value-added services; Through oil and gas reservoir identification technology, we can re-understand reservoirs and provide an optimized integrated solution of geological engineering for oil and gas well efficiency improvement measures.
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Selective Water Plugging Service
Smart gel water plugging agent is a selective water plugging product based on special polymers, which forms glue in water but it is dispersed in oil. By injecting the fluid system into the plugging section without moving the tubing, the fluid system is controlled to form colloid under the formation temperature and set time. Under the condition of formation temperature, the fluid system will form a colloid with certain strength when it encounters formation water or water channels, but it will not produce colloid when it encounters oil or oil channels. The system can maintain a long-term effective strength under the condition of formation water, so as to achieve the goal of selective water plugging in the formation.
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Nanobubble EOR Technology
Micro-nano bubbles refer to bubbles with a particle size (diameter) between 10 microns and hundreds of nanometers. At the moment of microbubble rupture, due to the drastic change of the disappearance of the gas-liquid interface, the high concentration of ions gathered on the interface will release the accumulated chemical energy at once, which can stimulate a large number of carboxyl free radicals with ultra-high redox potential. Its super strong oxidizing property can degrade pollutants that are difficult to decompose under normal conditions in water. Nanobubbles are injected into oil wells to reduce the surface tension of the liquid, improve the flow of oil, and thus increase oil recovery. By reducing the adhesion between oil and rock, nanobubbles can help release oil from the reservoir.
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T-Shaped Well
T-shaped well drilling technology is a kind of horizontal well drilling technology with large curvature and ultra-short radius. Because its single-branch drilling track profile is like "T", so it is called "T"-shaped well drilling technology.
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Multiple Heat Flow of HOR Service
The multi-component thermal fluid generator utilizes the high-pressure combustion injection mechanism. High-pressure air and natural gas/diesel are fully burned under high-pressure and closed conditions to generate high-temperature and high-pressure carbon dioxide, nitrogen and water vapor. The high-temperature flue gas is mixed with water to form a multi-component thermal fluid, which is directly injected into the oil layer.
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SERVICE
Solid Acid Reservoir Acidizing
The main component of solid acid is acid ester, which has no acidity in solid state. and forms the corresponding carboxylic acid after dissolution in water, which can dissolve formation rocks. In the aqueous solution, when reaching a certain temperature, the solid acid undergoes a chemical reaction to form an organic/inorganic acid, which produces physical and chemical effects on special blockages in the reservoir, and finally transforms into "soluble complexes" to achieve the purpose of reservoir reconstruction and plugging removal.
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Power Ultrasonic Plugging Removal
The ultrasonic frequency commonly used in industry is 20kHz~2MHz, and the ultrasonic application between 20kHz~100kHz is also called power ultrasound. Power ultrasound technology mainly uses the physical and chemical effects such as strong cavitation, heat, and vibration generated by the ultrasonic field in the surrounding medium to change its physical and chemical properties.
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