scholarly journals Experimental Study on Fe3O4 Nanoparticle-Assisted Microwave Enhancing Heavy Oil

Geofluids ◽  
2022 ◽  
Vol 2022 ◽  
pp. 1-14
Author(s):  
Teng Lu ◽  
Faqiang Dang ◽  
Haitao Wang ◽  
Qingmin Zhao ◽  
Zhengxiao Xu
Keyword(s):  
High Temperature ◽  
Microwave Heating ◽  
Heavy Oil ◽  
Microwave Power ◽  
Mass Concentration ◽  
Hydrogen Donor ◽  
Viscosity Reduction ◽  
Wave Absorption ◽  
Heating Capacity ◽  
Heavy Oil Upgrading

Nanoparticle-assisted microwave heating of heavy oil has the advantages of fast temperature rise and high thermal efficiency. Compared with traditional heating methods, it can reduce viscosity in a shorter time. In addition, the heavy components in the heavy oil are cracked into light components at high temperatures (this high temperature cannot be reached by conventional heating methods). This process is irreversible and avoids the problem of viscosity recovery of heavy oil after the temperature is reduced. Through absorbing microwave heating experiments, study the effect of nanoparticles on the improvement of the ability of heavy oil to absorb waves and raise temperature; through the heavy oil upgrading experiment and the four-component analysis experiment, the effect of adding hydrogen donor to assist microwave on the viscosity reduction of heavy oil upgrading by nanoparticles was studied, and the problem of viscosity recovery was determined; Through the gravity drainage experiment, the mechanism of nanoparticle-assisted microwave to improve the recovery of heavy oil is studied, and the influence of water content, nanocatalyst, and microwave power on the production of drainage is analyzed. The results show that nanoparticles can improve the wave absorption and heating capacity of heavy oil, and adding 0.6 wt% of nanomagnetic iron oxide catalyst can increase the heating rate of heavy oil in microwave by 60.6%; nanoparticle-assisted microwave heating method can effectively upgrade heavy oil and reduce viscosity. The experimental conditions are 2 wt% tetralin mass concentration, 0.5 wt% nano-Fe3O4 particle mass concentration, microwave heating time 50-60 min, and microwave power 539 W. Under this experimental condition, the viscosity is reduced by 40%. This method has viscosity recovery problems, but final viscosity reduction effect is still very significant. Obtaining the mechanism of nanoparticle-assisted microwave to enhance oil recovery, one of which is that nanoparticles improve the wave absorption and heating capacity of heavy oil and increase the heating speed of heavy oil; the second is that the nanoparticles form local high temperature under the action of microwave, which catalyzes the hydrocracking reaction between the heavy components in the heavy oil and the hydrogen donor, upgrading and reducing the viscosity of the heavy oil, and accelerating the production of heavy oil.

Experimental Investigation of In-Situ Emulsion Formation To Improve Viscous-Oil Recovery in Steam-Injection Process Assisted by Viscosity Reducer

SPE Journal ◽  
2016 ◽  
Vol 22 (01) ◽  
pp. 130-137 ◽  
Author(s):  
Chuan Lu ◽  
Huiqing Liu ◽  
Wei Zhao ◽  
Keqin Lu ◽  
Yongge Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Oil Recovery ◽  
Heavy Oil ◽  
Steam Injection ◽  
Viscosity Reduction ◽  
Injection Process ◽  
Viscous Oil ◽  
Viscosity Reducer ◽  
High Temperature Steam

Summary In this study, the effects of viscosity-reducer (VR) concentration, salinity, water/oil ratio (WOR), and temperature on the performance of emulsions are examined on the basis of the selected VR. Different VR-injection scenarios, including single-VR injection and coinjection of steam and VR, are conducted after steamflooding by use of single-sandpack models. The results show that high VR concentration, high WOR, and low salinity are beneficial to form stable oil/water emulsions. The oil recoveries of steamflooding for bitumen and heavy oil are approximately 31 and 52%, respectively. The subsequent VR flooding gives an incremental oil recovery of 5.2 and 6.4% for bitumen and heavy oil, respectively. Flooding by steam/VR induces an additional oil recovery of 8.4–11.0% for bitumen and 12.1% for heavy oil. High-temperature steam favors the peeling off of oil and improving its fluidity, as well as the in-situ emulsions. VR solution is beneficial for the oil dispersion and further viscosity reduction. The coinjection of high-temperature steam and VR is much more effective for additional oil production in viscous-oil reservoirs.

Additives on Hydrogen Donor Catalytic Upgrading for Viscosity Reduction of Heavy Oil under the Conditions of Steam Injection

2011 ◽  
Vol 55-57 ◽  
pp. 57-62 ◽  
Author(s):  
Fa Jun Zhao ◽  
Yong Jian Liu ◽  
Bo Zhang ◽  
Si Ha ◽  
Shi Ping Li
Keyword(s):  
Heavy Oil ◽  
Steam Injection ◽  
Reduction Reaction ◽  
Thermal Recovery ◽  
Hydrogen Donor ◽  
Viscosity Reduction ◽  
Nickel Salt ◽  
Oil Viscosity ◽  
Ammonium Hydrocarbonate ◽  
Group Compositions

Under the simulated thermal recovery condition, fundamental experiments were carried out in the high temperature high pressure reactor to study the aquathermolysis reaction of heavy oil using formic acid as hydrogen donor and oil-soluble organic home-made nickel salt as catalytic. Urea was selected optimally from the alternative chemical addictivess of ammonium carbonate, urea and ammonium hydrocarbonate and its dosage was 20wt%. The affect of the adding addictives in water for viscosity, group composition and element content of heavy oil during the hydrogen donor catalytic pyrolysis reaction, was researched. It was revealed that there mechanism in the heavy oil viscosity reduction reaction process. The addition of addictives had not only some degree of viscosity reduction function, but also synergistic interaction to the catalyzed reaction with hydrogen donor. Compared to the oil sample from reaction without addictives, there was no obvious change on group compositions, the contents of atom C, H, S, N and O nearly kept unchanged. the introduction of addictives basically did not change structure of heavy oil.

Thermal and Structural Analysis of Asphaltine in Heavy Oil before and after the Hydrogen Donor Catalytic Reaction of Upgrading and Viscosity Reduction under the Effect of Auxiliary Agents

2011 ◽  
Vol 55-57 ◽  
pp. 918-923 ◽  
Author(s):  
Fa Jun Zhao ◽  
Yong Jian Liu ◽  
Xian You Qi ◽  
He Wang ◽  
Jie Zhao
Keyword(s):  
Structural Analysis ◽  
Heavy Oil ◽  
Structural Changes ◽  
Thermal Transformation ◽  
Thermal Recovery ◽  
Hydrogen Donor ◽  
Viscosity Reduction ◽  
Nickel Salt ◽  
Before And After ◽  
Body Self

This paper applies high-pressure reactor to simulate conditions of thermal recovery and uses formic acid as hydrogen donor body, self-made oil-soluble organic nickel salt as catalyst and urea as auxiliary agents to conduct the study on of heavy oil. By TG-DTA, IR and NMR spectra, it makes an analysis on thermal transformation behavior and structural changes of asphaltine in heavy oil before and after the reaction of upgrading and viscosity reduction under the effect of auxiliary agents. The results show that the stability of the asphaltine in heavy oil after aquathermolysis reaction of hydrogen donor catalyzing is decreased. Infrared spectroscopy analysis reveals that the absorption peaks of IR functional groups of asphaltine in heavy oil is unchanged and the addition of auxiliary agents basically does not change the structure of asphaltine. NMR structural analysis shows that.

Hydrogen Donor Catalytic Aquathermolysis Upgrading for Heavy Oil: A Laboratory Study

2011 ◽  
Vol 480-481 ◽  
pp. 142-147 ◽  
Author(s):  
Fa Jun Zhao ◽  
Yong Jian Liu ◽  
Bo Zhang ◽  
Long Dong ◽  
Hai Tao Yu
Keyword(s):  
Formic Acid ◽  
Heavy Oil ◽  
Thermal Recovery ◽  
Hydrogen Donor ◽  
Viscosity Reduction ◽  
Nickel Salt ◽  
Oil Viscosity ◽  
Catalytic Aquathermolysis ◽  
Before And After

Heavy oil pyrolysis reaction was studied with formic acid as a body for hydrogen donor and homemade of oil-soluble organic nickel salt as a catalyst, by high-temperature and high-pressure Reactor simulating Thermal Recovery conditions. Explore the influence of the addition of hydrogen donor on heavy oil viscosity, group composition and sulfur contents before and after the catalytic aquathermolysis reaction. The results show that catalytic aquathermolysis of heavy oil leads to a percentage viscosity reduction of 64.69%, to an increase in saturates and aromatics contents from 24.32% and 36.89% to 26.12% and 38.08%, and to a decrease in resins, asphaltenes, and sulfur contents from 30.27%, 8.52%, and 0.5650% to 28.27%, 7.53%, and 0.3365%,respectively; when formic acid is introduced at dosage of 1-7% heavy oil mass, the percentage viscosity reductio is continuously raised to 69.16-87.02%, the saturates and aromatics contents-increased to 27.73-31.12% and 39.68-41.26% and the resins, asphaltenes, and sulfur contents-decreased to 26.29-24.12%, 6.66-3.50%, and 0.3095-0.0742%, respectively. The role of hydrogen donor formic acid and the functioning mechanisms involved in catalytic aquathermolysis of heavy oil are discussed.

Preparation of WC-TiC-Ni3Al-CaF2 functionally graded self-lubricating tool material by microwave sintering and its cutting performance

2020 ◽  
Vol 39 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Siwen Tang ◽  
Rui Wang ◽  
Pengfei Liu ◽  
Qiulin Niu ◽  
Guoqing Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Microwave Heating ◽  
Cutting Performance ◽  
Conventional Heating ◽  
Hard Alloys ◽  
Dry Cutting ◽  
Temperature Oxidation ◽  
Lubricating Material ◽  
Heating Technology

AbstractWith the concern of the environment, green dry cutting technology is getting more and more attention and self-lubricating tool technology plays an important role in dry cutting. Due to the demand for high temperature performance of tools during dry cutting process, cemented carbide with Ni3Al as the binder phase has received extensive attention due to its excellent high temperature strength and high temperature oxidation resistance. In this paper, WC-TiC-Ni3Al-CaF2 graded self-lubricating material and tools were prepared by microwave heating method, and its microstructure, mechanical properties and cutting performance were studied. Results show that gradient self-lubricating material can be quickly prepared by microwave heating technology, and the strength is equivalent to that of conventional heating technology. CaF2 not only plays a role in self-lubrication, but also refines the grain of the material. A reasonable gradient design can improve the mechanical properties of the material. When the gradient distribution exponent is n1 = 2, the material has high mechanical properties. Cutting experiments show that the WC-TiC-Ni3Al-CaF2 functional gradient self-lubricating tool has better cutting performance than the homogeneous WC-TiC-Ni3Al hard alloys.

Sign in / Sign up

Export Citation Format

Share Document