Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Abstract Ordinary foams such as the head of a glass of beer and more exotic ones such as solid metallic foams raise many questions for the physicist and have attracted a substantial research community in recent years. This book describes the results of extensive experiments, computer simulations and theories in an aut…
Abstract In recent years a number of new HT/HP reservoirs have been developed in the North Sea, for example the ETAP (Eastern Trough Area Project) and Shearwater fields, which have a number of important "scale" control issues. In addition to harsh downhole conditions (T > 175°C; P • 13,000 psi), high salinity (…
Abstract An alternative scale inhibition method using encapsulated scale inhibitor has been successfully used to control calcium carbonate scaling in the Ghawar Field oil wells of Saudi Aramco, Saudi Arabia. Field tests indicate that the Ghawar Field requires a low threshold scale inhibitor concentration for scale mit…
Highly transparent carbon nitride thin films have been prepared on transparent plastic substrates at low temperatures by radio frequency reactive magnetron sputtering of a graphite target in the plasmas of pure nitrogen and nitrogen-hydrogen gas mixtures. The amorphous films thus obtained have been characterized for t…
Abstract The squeezing of scale inhibitors into the near well bore region of oil producing wells is a recognised solution to downhole scale prevention. In many cases, this downhole application leads to an initial decrease in the well productivity, which can recover to the pre squeeze level with time. However, in some…
The transition between cubic and tetragonal phases in KMnF 3 has been studied by x-ray diffraction rocking curves and calorimetry. Comparison of the excess entropy with the order parameter Q obtained from spontaneous strain shows that the mean field relationship S Q 2 is obeyed to within experimental error. The data a…
The influence of probing laser power density on the band-edge and the trap luminescence from CdS x Se 1- x nanoparticles embedded in a glass matrix is reported. Both the position and the strength of the band-edge luminescence are found to be very sensitive to the laser power. It is observed for the first time that the…
Abstract In the development of Elf Exploration Angola’s Girassol field located approximately 200 km west of the coast of Angola in 1,500 m of water depth, 390,000 barrel per day of seawater will be needed for a waterflood operation. Formation water analysis indicate both barium and strontium levels of approximately 23…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTPerfluorocyclobutyl Liquid Crystalline Fluoropolymers. Synthesis and Thermal Cyclopolymerization of Bis(trifluorovinyloxy)-α-methylstilbeneD. W. Smith, H. W. Boone, R. Traiphol, H. Shah, and D. PerahiaView Author Information Departm…
Abstract Ester cross-linking of various classes of organic acid scale inhibitors has been investigated as a possible means to enhance inhibitor retention in the near wellbore reservoir. Three generically different polycarboxylic acid based inhibitors have been successfully ester cross-linked. Inhibition tests indicate…
Abstract Chemical inhibitors that prevent the formation of sulphate and carbonate mineral scale formation are used in field squeeze treatments. The demand for competent evaluation of all issues associated with mineral scaling in wells and pipelines is continuous throughout the lifetime of any producing asset and the c…
Abstract This paper describes the development of a PMPA scale inhibitor chemistry, for potential ‘squeeze’ application, to provide scale inhibition under severe Barium Sulphate scaling conditions. Phosphonate type inhibitor chemistries have been applied in ‘squeeze’ treatments as they have the desired adsorption chara…
Abstract Carbonate or sulphate scaling is usually mitigated by using chemical inhibitors that alter the growth mode of the scale mineral, but with halite scaling the apparent absence of a suitable inhibitor has meant that periodic removal with low-salinity water has been favoured. We report laboratory testing and the…
Abstract Calcium carbonate scale impacts oil production in a large number of fields worldwide. This scale is generally managed by acid washing to removal the scale and/or by performing scale inhibition treatments. The choice between inhibition and regular stimulation is cost driven, with high cost operations generally…
Abstract Aqueous based scale inhibitor squeeze treatments have been routinely deployed on Total Oil Marine’s North Alwyn field for many years. More recently, declining reservoir pressure in parts of the field, coupled to poor reservoir communication has led to a considerable increase in the time required to bring trea…
SrTiO 3 and KTaO 3 are incipient ferroelectrics whose phase transition temperature is suppressed by quantum fluctuations. The recent observation of induced ferroelectricity due to exchange of 16 O by 18 O (1999 Phys. Rev. Lett. 82 3540) is reproduced for the dielectric data by an anharmonic electron-phonon interaction…
Abstract This paper describes the effect of chemical interactions on the efficiency of removing iron sulfide scale. Most types of iron sulfide can be removed by inorganic acids. A corrosion inhibitor (amine-type chemical) is added to the acid to protect the well tubulars. In addition, a hydrogen sulfide scavenger (ald…
Optical transitions at the single substitutional nitrogen centre (P1) in synthetic diamond are discussed. It is shown that the 4.6 eV absorption band is not due to P1, but due to some other centre, tentatively suggested as a nitrogen-boron complex. The 4.5 eV photocurrent threshold is assigned to the transition from t…
Abstract Although waterflooding is a common method for increasing oil recovery, certain production problems may arise after water breakthrough. In addition to affecting oil recovery, these problems may also have an adverse impact on the environment. One particular production problem is mineral scale formation due to m…
Colloidal copper particles (20−100 nm) are formed in the γ-irradiation of aqueous solutions of KCu(CN) 2, which also contain methanol or 2-propanol as OH scavenger. The radiation chemical yield is of the order of 0.1 Cu atoms formed per 100 eV absorbed radiation energy and decreases with increasing concentration of ex…