... ABSTRACT Wax deposition prediction is of great significance for the waxy crude oil pipeline safety. Herein, the wax deposition characteristics of a new crude oil pipeline was experimentally studied in a laboratory flow loop device. It was found that the higher oil temperature and pipe/oil...

... ABSTRACT Based on the enthalpy-porous medium theory, a mathematical model of the melting phase transition process of waxy crude oil in shipwreck oil tanks is established. The research results show that in the early stage of melting, the heating rate decreases with the increase of wax content...

... Abstract China proposed to establish a Free Trade Area on the Zhoushan Islands, specifically planning to arrange 8 crude oil berths above 300,000 tons on 3 islands. Due to the overlap of berths and offshore time and so on, the large crude oil vessels have high requirements in management...

... of a marginal oilfield. upstream oil & gas oilfield pipe ii midstream oil & gas platform viscosity pipeline pigging reverse point separator water content demulsifier pipeline network operation marginal oilfield pipe iii crude oil cepa enhanced recovery kpaa bohai oilfield...

... ABSTRACT Water-in-oil (W/O) emulsions widely exist in submarine pipelines and its flow characteristics are crucial to the safety of crude oil transportation. In this study, different water content emulsions are prepared and their variations of rheological properties during pipe flow...

... separators, finally the totally mixed crude oil with 30% water content from the separator with low CO 2 content could be exported into the subsea pipeline using common carbon-steel material instead of more expensive CRA-clad pipeline. So about 1 billion RMB could be saved which is a big cost reduction...

... stores the oil over seawater. During production, the crude oil displaces the seawater, whereas during offloading, the storage compartments are refilled with seawater. In this paper, we developed a new type of wet storage system, which can provide a storage capacity of 100,000∼1,000,000 barrels of oil...

... ABSTRACT Oil lightering is the process of transferring crude oil or oil products between vessels of different sizes, usually between a barge and a bulker or oil tanker. This economic and convenient operating method develops quickly in coastal areas recently, which greatly relieves...

... surface area, were more effective than other types of nanocomposite in modifying waxy oil. INTRODUCTION Modifying the rheological properties of waxy crude oil at low temperature by pour point depressant (PPD) is an efficient and environment-friendly method to reduce viscosity and pour point of waxy...

..., and high viscosity. There are abundant oil and gas resource in the Bohai Bay of China, and however, a large portion of them are marginal oilfields, which restrict high-efficient development and construction of the Bohai oilfields. Due to limited crude oil reserves and short development cycle, equipment...

... is located in the Bohai Bay area, oil containing layers are mainly Qianshan, Guantao and Minghuazhen group, and crude oil viscosity range under reservoir conditions is 50 ~ 10,000 mPa - S. The heavy oil is categorized as naphthenic base crude oil: density @20 C is 0.96 ~ 1.07, viscosity @50C is 488mPa.s...

... ABSTRACT Asphaltenes are heavy and polar fractions present in crude oil. Literature survey reveals that studies underlying the effect of individual components of crude oil on hydrate formation are rare. In this work, asphaltene fractions were extracted from a vacuum residue of the crude oil...

... and the surrounding soil under these conditions are calculated. The thermal feature of subsea bundled pipelines is summarized, which is of significance to the development of offshore marginal oilfield, especially for high condensation point or high viscosity crude oil. KEY WORDS: bundled pipeline; thermal calculation...

... potential problems. Extensive tests, using crude oil and seawater, were performed in a 1:40 scale model of the wet storage system developed by Wang and Luo (2016). The objective of the experiment is to test and prove the feasibility of oil-water displacement principle in floating platforms, to demonstrate...

... ABSTRACT The heating process of the crude oil in a polar tanker is simulated in this paper with the heating and thermal insulation of the cargo considered. A 3-D numerical model is established and the accuracy of the numerical methods is verified by the experimental data. After...

... studies. INTRODUCTION During the transportation of cargo oil tanker, it is required to heat the oil due to its characteristics of high viscosity. However, excessive heating will increase energy consumption. Most of the scholars have studied the natural convection heat transfer process of crude oil...

... water discharged into the sea. displacement method tank water storage tank upstream oil & gas crude oil process flow diagram storage subsea system oil-water displacement method oil storage tank fpso oil storage underwater oil storage seawater system design platform storage...

... Study on the Asphaltene Deposition Prediction Theory and Method in Deepwater Crude Oil Pipelines Ping Lu and Xiaying Du Li Yang Bohai Oilfield Research Institute, Tianjin Branch, CNOOC China Limited Southwest Petroleum University Tanggu, Tianjin, China Chengdu, Sichuan, China Zhaoguang Qu...

...., 2011, Petrich et al., 2013). Discharged crude oil in ice-covered waters preferentially collects in concave depressions underneath the ice. The thickness of these oil pools typically range from 0.08 to 0.2 m. (Glaeserand Vance, 1971; NORCOR, 1975, Goodman and Fingas, 1983; Wilkinson et al., 2014...

..., and the majority of the oil would stay on the surface, and accumulate on the shoreline, rather than disperse into water column. Introduction Oil and gas resources, which account for more than 70% of Canada's primary energy production, are of significant national economic importance. The production of crude oil...