Wax deposition in diesel transportation pipe at low temperatures is one of the harassing problems faced by the diesel transportation companies. In winter, the temperature is very low and the demand of diesel is increasing greatly in northern region…
With the exploration and development of natural gas gradually extended to the deep sea, low-temperature and high-pressure environmental conditions and long-distance transportation make flow assurance engineers have to consider the impact of the…
Wax deposition in waxy crude oil pipelines can cause the flow safety problems of the tieback pipes, therefore it is necessary to make a full study on the deposition and control laws for these pipes. In this study, based on certain waxy crude oil…
In order to explore the micro-dynamic principle of radial deposition and adhesion behavior and analyze the effect-principle of the features in construction of rough tube surfaces on each link, a molecular dynamic model was established to characterize…
Asphaltene deposition is a ubiquitous problem in crude oil exploitation, which can cause the blockage of pore throat, leading to a significant reduction of oil recovery. Understanding the microscopic mechanism of asphaltene deposition and its…
This work aims to study the effect of wax deposition process parameters during crude oil transportation process. A mathematical model and optimization parameters of wax deposition were introduced. The input parameters considered were Temperature T…
The deposition of paraffin on the pipeline surface during crude oil transportation is a significant issue for oil industries. In this regard, the demand for adequate methods of wax deposition has gained considerable attention. In the current work,…
Pour point depressant is one of the effective approaches to improve the low temperature fluidity of high-wax crude oil. Understanding the gelation of waxy oil on the pipe wall and the mechanism of pour point depressant is of great significance for…
Hydrate plugging in pipes is a serious issue that affects flow safety in the trial production of offshore natural gas hydrates. Current research on hydrate flow assurance has primarily focused on conventional oil-and-gas production and transportation…
Wax deposition is a serious issue during the pipeline transportation of crude oil. This research work has investigated the effects of some important parameters on the flow characteristic of crude oil during the pipeline transportation in offshore and…
Solid and wax precipitation during production, transportation, and storage of petroleum fluids is a common problem faced by the oil industry throughout the world. Continuous wax deposition is a critical issue for offshore transport pipeline and for…
Although the problem of wax deposition in multiphase transportation pipelines have been addressed and some related wax deposition models have been developed in recent years, the complex wax deposition paths derived from the potential variety of flow…
Wax deposition is one of the most expensive flow assurance issues encountered in crude oil production and transportation. It can lead to drastic production loss and ultimately heavy economic losses to E&P companies. Thus, precise prediction for field…
Paraffin wax deposition has been a reoccurring problem in transportation of waxy crude oil in the oil industry. Chemical treatment had been the most convenient and economical method for tackling this problem. This paper considered the study on…
Most of the oil produced from oil fields is paraffin-contained crude oil. Ultrasonic treatment has been proven to be good method for paraffin inhibition. In this article, it is proved, from the microscopic point of view, that ultrasonic wave can…
In Malaysia, solid depositions of paraffin wax in the inner walls of production and transportation pipelines, and on the surface of production equipment have been identified as the utmost challenge in production and transportation of crude oil. In…
Wax deposition and gel formation have been crucial problems to the oil industries. The deposition of waxes would lead to gelation which blocks flow in pipelines and interrupts steady production of oil at offshore fields. The plugged gel needs to be…
Two separate petroleum systems have been identified in the Austrian sector of the North Alpine Foreland Basin: a lower Oligocene Cenomanian/Eocene oil and thermogenic gas system
The study employed thirteen (13) crude oil samples from thirteen (13) producing wells, with the aim of examining the source of organic matter and the paleoenvironment of deposition. The crude oils were deasphaltened and the maltene fraction…
Evaluating any subsurface CO2 storage site comprises the reservoir, seal, and overburden investigation to mitigate injection and storage-related complications. The Upper-Middle Jurassic Sognefjord, Fensfjord, and Krossfjord formation sandstones are…
This study develops an integrative simulation model of a water alternating gas (WAG) process that co-injects carbon dioxide (CO2) and methane (CH4)–CO2–CH4 WAG—for formation damage caused by asphaltene deposition in an oil reservoir. The influences…
Storage of large amounts of carbon dioxide (CO2) within deep underground aquifers has great potential for long‐term mitigation of climate change. The U.S. Gulf Coast is an attractive target for CO2 storage because of the favorable formation…
A comparative study on organic geochemistry and kinetics was performed on two representative coal measure mudstone and coal samples of the Eocene Pinghu Formation in the Xihu Sag, East China Sea Shelf Basin, China. Gas chromatographymass spectrometry…
The research aims to study how the magnetic fields affect the cold flowability and wax deposition of the crude oil, which has been stirred by the low-intensity magnetic field for a long time. The corresponding cold flowability of crude oil can be…
Light crude oil from the lower member of the Paleogene Xiaganchaigou Formation of Gaskule in Qinghai Oilfield was selected to carry out thermal kinetic analysis experiments and calculate the activation energy during the oil oxidation process. The…
Crude oils are generally very complex chemical systems consisting predominantly of hundreds to thousands of hydrocarbon compounds from simple low-molecular-weight paraffin to high-molecular-weight waxes. There are many factors effecting wax…
In order to explore the micro-dynamic principle of radial deposition and adhesion behavior and analyze the effect-principle of the features in construction of rough tube surfaces on each link, a molecular dynamic model was established to characterize…
The prevention and control of natural gas hydrate (hereinafter, "hydrate" for short) blockage during deepwater gas well production tests is very important in ensuring the test safety. In this paper, the distribution of wellbore temperature and…
The Upper Cretaceous Waha Formation is the prime hydrocarbon reservoir in the RG Field in the central Sirte Basin, Libya. The porosity and permeability of the Waha carbonate reservoir vary widely from 5 to 20 % and 0.01 to 2000 md, respectively,…
Carbonate reservoirs represent a steadily growing part of sedimentary formations targeted for oil and gas exploration worldwide. It is currently evaluated that over 50% of the remaining conventional hydrocarbon reserves are in carbonate formations.…
Production, transportation and storage of highly waxy crude oil is very challenging. This is because they are usually characterised by high content of macro-crystalline waxes, predominantly consisting of n-alkanes (C18 to C36) that which could cause…
Asphaltenes represent the most polar solubility fraction of crude oil. The polar-polar interactions between asphaltene-water, asphaltene-clay, or asphaltene-asphaltene molecules can cause severe flow assurance issues in the oilfield such as formation…
Different from other gas drive processes, phase behavior performs more significant roles in natural gas drive process. The main reason is that more severe mass transfer effect and similar phase solubility effect have been caused by multicomponent…
Hydrocarbons are trapped at great depths with pressure and temperature higher than surface conditions which would vary depending on reservoir properties. When the well is set on production, these hydrocarbons travel through the wellbore over reducing…
Production from highly paraffinic crude oil wells poses unique technical challenges such as poor flowability and paraffin deposition on the production tubing. Paraffin deposition increases the lift load on the pump, reduces pump efficiency, and…
We investigated the spatio-temporal trends of polycyclic aromatic compounds (PACs) deposition in the Athabasca Oil Sands Region (AOSR) between 2008 and 2017, and applied source apportionment tools to assess sources using snowpacks. Estimated PAC mass…
Wax deposition and gel formation have been crucial problems to the oil industries. The deposition of waxes would lead to gelation which blocks flow in pipelines and interrupts steady production of oil at offshore fields. The plugged gel needs to be…
Asphaltene deposition is one of the key technical problems in the safe production and transportation of deepwater asphalt base crude oil. This paper analyzes the asphaltene deposition condition and its existence in deepwater crude oil pipeline system…
Different from other gas drive processes, phase behavior performs more significant roles in natural gas drive process. The main reason is that more severe mass transfer effect and similar phase solubility effect have been caused by multicomponent…
Volatile organic compounds (VOCs) are toxic to the ecological environment. The emission of VOCs into the atmosphere has already caused attention. However, few studies focus on their regional effects on soil. As a major VOCs source in China, research…
Petroleum industry is the mainstay of the economical enlargement of many nations. Most of the market prices of all commodities are built on the cost of wide-range of petroleum products. Prompt identifying and alleviating challenges facing this sector…
Hydrate plugging in pipes is a serious issue that affects flow safety in the trial production of offshore natural gas hydrates. Current research on hydrate flow assurance has primarily focused on conventional oil-and-gas production and transportation…
This study develops an integrative simulation model of a water alternating gas (WAG) process that co-injects carbon dioxide (CO2) and methane (CH4)–CO2–CH4 WAG—for formation damage caused by asphaltene deposition in an oil reservoir. The influences…
The mechanisms by which hydrates deposit in a petroleum production-line are probably related to pipeline surface properties, e.g. pipeline material, surface energy and roughness. In this work, the wettability alteration of pipeline surfaces from…
Wax deposition and gel formation have been crucial problems to the oil industries. The deposition of waxes would lead to gelation which blocks flow in pipelines and interrupts steady production of oil at offshore fields. The plugged gel needs to be…
In Malaysia, solid depositions of paraffin wax in the inner walls of production and transportation pipelines, and on the surface of production equipment have been identified as the utmost challenge in production and transportation of crude oil. In…
After years of research into the heavy components of crude oil, asphaltenes are still one of the most complex and unknown organic molecules. During these years, asphaltene has been the subject of research by chemists, chemical engineers, petroleum…
Petroleum industry is the mainstay of the economical enlargement of many nations. Most of the market prices of all commodities are built on the cost of wide-range of petroleum products. Prompt identifying and alleviating challenges facing this sector…