A method, combing the STA/LTA method in seismic identification with the negative pressure detection, was studied and applied to oil pipeline leak detection. According to the signal similarity of seismic first arrival and negative pressure produced in…
A method, combing the STA/LTA method in seismic identification with the negative pressure detection, was studied and applied to oil pipeline leak detection. According to the signal similarity of seismic first arrival and negative pressure produced in…
Since leaks in high-pressure pipelines transporting crude oil can cause severe economic losses, a reliable leak risk assessment can assist in developing an effective pipeline maintenance plan and avoiding unexpected incidents. The fast and accurate…
Since leaks in high-pressure pipelines transporting crude oil can cause severe economic losses, a reliable leak risk assessment can assist in developing an effective pipeline maintenance plan and avoiding unexpected incidents. The fast and accurate…
Since leaks in high-pressure pipelines transporting crude oil can cause severe economic losses, a reliable leak risk assessment can assist in developing an effective pipeline maintenance plan and avoiding unexpected incidents. The fast and accurate…
Due to the potential severity of oil and gas pipeline accidents, the accurate assessment of defective pipelines is a critical focus in petroleum engineering. Some parameters in the assessment standards are, however, limited in their technologies.…
Due to the potential severity of oil and gas pipeline accidents, the accurate assessment of defective pipelines is a critical focus in petroleum engineering. Some parameters in the assessment standards are, however, limited in their technologies.…
Due to the potential severity of oil and gas pipeline accidents, the accurate assessment of defective pipelines is a critical focus in petroleum engineering. Some parameters in the assessment standards are, however, limited in their technologies.…
Due to the potential severity of oil and gas pipeline accidents, the accurate assessment of defective pipelines is a critical focus in petroleum engineering. Some parameters in the assessment standards are, however, limited in their technologies.…
Due to the potential severity of oil and gas pipeline accidents, the accurate assessment of defective pipelines is a critical focus in petroleum engineering. Some parameters in the assessment standards are, however, limited in their technologies.…
Based on the characteristics of short transmission and distribution distance, large fluctuation angle and intermittent operation, the corrosion of pipelines of crude oil storage and transportation unit transporting crude oil to refinery processing…
In order to ensure the crude oil pipeline process smoothly, the driving force has a certain exergy loss. Based on the exergy analysis method, according to the required minimum potential difference of pipeline transportation, the unavoidable exergy…
Energy consumption plays a dominant role in the technical and economic indicators of pipeline operation, and is greatly influenced by operation schemes. However, the conventional energy consumption model is often analyzed from the perspective of…
The oil and gas industry has paid increasing attention to energy consumption and is taking steps to reduce emissions owing to growing environmental concerns. In this study, a method for designing the optimization of crude oil pipelines is proposed to…
Improvement of flow properties of crude oil through pipelines, the effect of temperature, diameter, water cut, and novel extracted surfactant on pressure drop, shear viscosity was studied along with energy analysis. The impact of diameter,…
The buried China-Russia Crude Oil Pipeline (CRCOP) traverses 441-km discontinuous permafrost zone and has been operating at positive oil temperature since 2011. The underlying permafrost is degrading and thaw settlement occurs in the trench. An…
The China–Russia Crude Oil Pipeline (CRCOP) was built to transport Siberian crude oil across 1030km of frozen ground. The Chinese portion of the CRCOP crosses 441km of discontinuous permafrost zones along the eastern flanks of the Da Xing'anling…
Adding small amounts of drag-reducing agents (DRA) to the crude oil can effectively reduce energy losses and its associated pressure drop in transportation pipelines. They do their roles by reducing the turbulent friction factor of the flowing…
To explore the influence of the isolation ball in a crude oil pipeline running over complex terrain, a “U” undulating crude oil pipeline with a large drop was taken as a practical case (the maximum elevation difference was 1490 m). Based on the OLGA…
In the buried waxy crude oil pipeline, considering the change of physical properties with temperature and the latent heat of wax precipitation, based on the pipeline-soil-atmosphere coupled heat transfer, the temperature drop model after shutdown is…
For oil and gas gathering and transportation field, shutdown is inevitable. After the pipeline of buried geothermal oil is shutdown, the crude oil will dissipate quickly and solidify easily. The phase change process of crude oil in the pipeline is…
A commercially available anti-agglomerant (AA) was evaluated in water-in-crude oil (W/CO) emulsions at different water cut. The injection of an AA to an emulsion affects the induction time and rate of hydrate formation. When AA was injected before…
Previous transportation fuel life cycle assessment studies have not fully accounted for the full variability in the crude oil transport stage, for example, transporting a light crude through a high-diameter pipeline, vs transporting a heavy crude…
To explore the problem of the slack flow and waterhead having a huge impact on the low point of a pipeline during the water-filling process of a large-drop pipeline, the crossing section of the Nujiang China-Myanmar crude oil pipeline (for which the…
In this paper, the chemical exergy in waxy crude oil pipeline transportation process was mainly calculated and studied. On the one hand, the specific chemical reaction exergy of waxy crude oil in oilfield was derived according to the common…
This paper investigates the effect of the viscosity of crude oil and stress acting on buried oil pipelines inside dune sand. Due to the increase in energy demand, transportation of all hydrocarbons is obligatory. However, transportation of this oil…
In order to establish a comprehensive exergy consumption evaluation system for crude oil pipeline transportation system, this paper proposed the definition and calculation method of unavoidable exergy loss based on the exergy analysis method and…
In order to ensure the safe and economic operation of waxy crude oil transportation process, the micro-dynamic mechanism and thermodynamic characteristics of wax precipitation process at nanoscale are necessary to be revealed. Here, we established…
Based on process principles and the operational features of crude oil pipelines, this research developed mathematical models to optimize steady-state pipeline operation, to apportion monthly flow into daily or hourly flow rates, and to predict…
Acidic substances (naphthenic acids) were found in crude oil, which provides favorable conditions for the formation of surfactants. N,N-Dimethylcyclohexylamine (DMCHA) can activate the naphthenic acid in the crude oil to form the surfactant by…
In this paper, wax deposition in waxy crude oil transportation process was regarded as an irreversible process. Based on the entropy production rate equations, the linear phenomenological equations for the diffusion of wax molecules were derived by…
Due to the high pour point of the oil products transported in the long-distance high wax crude oil pipeline, in order to ensure the operation safety, it is necessary to adopt heating transmission technology, so as to ensure that the oil temperature…
The electrical energy consumption forecasting for crude oil pipeline is critical in many aspects, such as energy consumption target setting, batch scheduling, unit commitment, etc. For actual crude oil pipelines, the nonlinearity of the sample is…
The basic theory of exergy was used to derive the formulae of physical and chemical exergy in the process of pipeline transportation, combined with the effect of wax deposition on the thermodynamic parameters including specific heat, density,…
Internal corrosion is a leading cause of failure of pipelines that transport crude oil. The small amounts of saline water present in crude oil separates over a period due to any stagnancy or low flow conditions. The separated water causes water…
In this work, X-ray diffraction and Mossbauer spectroscopy techniques were used to characterise and carry out a comparison of the corrosion products obtained during the pigging activities in two sour-hydrocarbon-transporting pipelines located in the…
Oil theft always results in huge economic loss, human casualties, and extremely environmental pollution especially when the leaks from crude oil pipeline are not detected and repaired timely. In this paper, we focus on how to detect and monitor…
According to the exergy balance relationship among the various items in the crude oil transportation process system, the exergy balance equation is established and each exergy loss is calculated. In a sense, the essence of exergy analysis method…
In this paper, the data of wax precipitation before and after the addition of the additives showed that the addition of the drag reducing agent (DRA) and the pour point depressant (PPD) cannot change the wax appearance temperature (WAT) of crude oil.…
Based on the phase equilibrium model of the paraffin wax precipitation in the process of oil pipeline transportation, theory and method of non-equilibrium thermodynamics were applied to obtain the linear phenomenological equations for the…
Kazakhstan is one of China's neighboring countries, there are, since the ancient times in an China commercial traffic line there are important geographical location, now China is growing stronger, Kazakhstan is China's friendly neighbors, Kazakhstan…
An investigation was made into the fatigue properties of L485MB (X70) pipeline steel after 13yr of exploitation as a crude oil pipeline material. Fatigue tests in zero-to-tension loading were carried out (i) in air, (ii) in crude oil, (iii) in a…
Su CuO oil pipeline is the first long-distance oil pipeline in Hulunbuir oilfield, which undertakes the main task of crude oil transportation. In order to reduce the cost of crude oil transportation, a mathematical model for the optimization of the…
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…
The possible threats of external corrosion and stress corrosion cracking on a series of pipelines in Kuwait have been investigated. The pipelines were constructed from API 5L Grade B steel and tended to be coated with coal tar enamel or polyethylene.…
On the basis of the experiences from some pipelines transporting oil and gas in permafrost regions, this paper investigates the formation process, influential factors, causing mechanisms of frost hazards and their impacts on the pipeline according to…
The frame of engineering-economic characteristics of oil and gas pipelines is outlined in this paper, and some key elements are also discussed on the basis of a large amount of engineering calculation and economic analysis of virtual crude oil…
This is an innovative work that may prove to be a milestone in terms of saving money that gets wasted due to the generation of unwanted interface (I/F) mixture between different petroleum products (diesel, gasoline and kerosene oil) in direct…
Based on the characteristics of short transmission and distribution distance, large fluctuation angle and intermittent operation, the corrosion of pipelines of crude oil storage and transportation unit transporting crude oil to refinery processing…