查询词典 natural gas

Premise Liquefied petroleum gas is derived from oil gas, natural gas, the gas production of refinery and petrochemicals. The main components are dimethylmethane, propylene, butane, butylene and such low class hydrocarbon. It's a gas with achromaticity and transparence; LPG is hardly dissolved in water, but dissolved in ethanol and aether, it can dissolve gas production, propagation oil and caoutchouc.

液化石油气（liquefied petroleum gas，LPG）是石油伴生气、天然气、炼油厂及石油化工厂的气体产品，经分离精制而来，其主要成分为丙烷、丙烯、丁烷、丁烯等低分子烃；无色透明，带有微弱的臭味；难溶于水，溶于乙醇和乙醚等，并能溶解石油产品，动植物油和天然橡胶。

To promote the coordinated development of upstream, mid-stream, and downstream of the natural gas industrial chain and map Out national policies on natural gas industry; a. to encourage the users in urban gas. gas-fueled vehicles, and industrial gases; c. to build up a full range of natural gas supply security system; b. to allow the local governments to develop regional economy by supporting natural gas industry; f. to complete the price formation mechanism of natural gas by adjusting the prices at each link from upstream to downstream; e.

提出了6条具有可操作性与政策前瞻性的保持协调发展的策略：①促进天然气产业上中下游协调发展，制钉国家层面的天然气工业发展规划，培育以城市燃气、天然气汽车、工业用气为主导的天然气市场体系；②构建全方位的天然气供应安全保障体系；③地方政府大力支持天然气行业，促进区城经济发展；④抓住当前调价的良好时机，尽快建立天然气产业链各环节合理化的价格机制。

China mainly natural gas used in the production of nitrogen, followed by the production of methanol, formaldehyde, acetylene, methylene chloride, carbon tetrachloride, carbon disulfide, nitromethane, hydrocyanic acid and extraction of helium and carbon black. Since the 70s, has built more than natural gas and oil field associated gas as raw materials for large-scale ammonia plant, as well as a number of small and medium-sized ammonia plant, so that the national structure of the synthetic ammonia production of raw materials, natural gas share of about 30%; also be built at the same time A system of acetylene gas plant to manufacture Vinylon and vinyl acetate, acetylene gas used in the production of methanol.

中国天然气主要用于生产氮肥，其次是生产甲醇、甲醛、乙炔、二氯甲烷、四氯化碳、二硫化碳、硝基甲烷、氢氰酸和炭黑以及提取氦气。70年代以来，已兴建多座天然气和油田伴生气为原料的大型合成氨厂，以及一批中、小型合成氨厂，使全国合成氨生产原料结构中，天然气所占的比例约达到30％；同时还兴建了天然气制乙炔工厂，以制造维尼纶和醋酸乙烯酯，乙炔尾气用于生产甲醇。

Based on natural gas state equation and dynamic theory of natural gas migration, natural gas velocity of flow rate equation before and after temperature and pressure decreasing is fetched, and with which interface natural gas lengths in different reservoirs are calculated and the changing law of equivalent-length natural gas in migration is analyzed, whence it is discovered that migrating velocity of natural gas along tilting up reservoir is increasing inch by inch, along with temperature and pressure continuously decreasing.

由此发现，在运载层物性不变的情况下，天然气沿上倾地层向上倾方向运移的过程，是随地层温度和压力不断降低、其运移速度逐渐增大的过程，如果有后续气体的加入，会使气体长度增大，致使运移速度增加得更快。

Based on the achievements and developm ents in studying natural gas hydrates at home and abroad,the mechanism of causi ng the oil and gas reservoirs to be tightly sealed by the natural gas hydrates i s systematically analyzed in the paper through discussing the formation mechani sms,evolution properties and distribution laws of the natural gas hydrates.In li ght of the research on their control effects on petroleum accum ulation and reservoir preservation,several geologic models of oil and gas accumu lation and preservation related to the natural gas hydrates are proposed,such as vertically and laterally screened models,screened-by-drape and screened-by- contact models and syngenetically and epigenetically screened models,etc.

以国内外天然气水合物的研究成果和进展为基础，通过讨论天然气水合物的形成机制、演化特征以及其分布规律，系统分析了天然气水合物可以得天独厚地封盖油气藏的机理，探讨了其对油气藏尤其是气藏聚集和保存的控制作用，提出了天然气水合物聚集和保存油气的多类地质模式，如垂向遮挡和侧向遮挡、披覆遮挡和接触遮挡以及同生遮挡和后生遮挡等。

Express as a result that the study area gets close to hydrocarbon generation center, have high-quality coal measures hydrocarbon source rock along with big hydrocarbon generation intensity, so it has abundant gas source and the material foundation to form large scale natural gas reservoir; Evaporitic tidal flat facies of the Ordovician Majiagou Formation in this area is situated in the austral expanded range of the karstification zone, and is the optimum natural gas prospecting targets of the lower-Paleozoic; In the south of study area, there are well-developed delta deposition system sand bodies of Shanxi Formation and Xiashijezi Formation, hence this area becoming the most beneficial Neopaleozoic natural gas enriched region; In this area, the Paleozoic develop various concealed non-structured traps, the natural gas migration and accumulation process is very beneficial and both the cover and the conservancy condition are also very good.

结果表明：研究区紧邻上古生界生烃中心，发育优质煤系烃源岩，生烃潜力大，气源充足，具备形成大型天然气藏的物质基础；区内奥陶系马家沟组发育有蒸发潮坪相沉积，位于北部古潜台的向南延伸带上，是下古生界天然气的有利勘探目标；南部山西组和下石盒子组发育三角洲沉积体系砂体，是有利的上古生界天然气富集区；研究区古生界发育各种隐蔽性非构造型圈闭，天然气运聚成藏过程非常有利，封盖和保存条件也很好。

According to the researches, the natural gas in this area is mainly controlled by structures and sedimentation, faults play a very important role in the natural gas's movement, the high spot areas of paleostructures are the advantageous gathering places of natural gas today; the sedimentary facies of the area is mainly the delta front subfacies, and the thickness of sand bed is relatively thin, the fuzzy diagnosis of natural gas indicates that the gas of this oil layer is distributed dispersively.

研究认为，本地区的天然气分布主要受构造和沉积控制，断层对天然气的运移起到至关重要的作用，古构造的高点地区是现今天然气的有利聚集区；本区沉积相主要为三角洲前缘亚相，砂体厚度相对较小，模糊识别天然气预测显示该油层天然气呈分散状分布；但总体看，由于本区天然气埋藏很浅，容易开发，且天然气预测分布面积之总和具一定规模，因此有较好的发展前景。

Including high temperature for the pyrolysis of natural gas to produce carbon black and acetylene; steam reforming of natural gas or partial oxidation of natural gas, synthetic gas can be obtained; natural gas through chlorination, sulfide, nitrification, ammoniated oxide, oxidation can be obtained A N all kinds of derivatives; in the wet gas ethane, propane, butane and natural gas liquid condensate, and so on, the steam cracker or pyrolysis to produce ethylene, propylene and butadiene; dehydrogenation of butane oxidation or produce small Diene or acetic acid, methyl ethyl ketone, and maleic anhydride, and so on.

包括在高温下进行的天然气热裂解，主要生产乙炔和炭黑；天然气蒸汽转化或天然气的部分氧化，可制得合成气；天然气经过氯化、硫化、硝化、氨化氧化、氧化可制得甲烷的各种衍生物；湿性天然气中的乙烷、丙烷、丁烷和天然气凝析液等，经蒸汽裂解或热裂解可生产乙烯、丙烯和丁二烯；丁烷脱氢或氧化可生产丁二烯或醋酸、甲基乙基酮、顺丁烯二酸酐等。

The aim of this study is to discuss the improving recycle engineering for shaft seal gas of pressure energy expander and the reduction of carbon dioxide emission in a Liquefied Natural Gas receiving terminal.

本文研究目的在於探讨液化天然气（Liquefied Natural Gas，简称LNG）接收站内，LNG能用於压能膨胀发电机之轴封气回收改善工程与二氧化碳节能减碳之研究。

The main courses are political theory and foreign language, engineering mathematics, elasto-plastic mechanics, computer applications, fluid mechanics, seepage mechanics, numerical simulation of petroleum deposits, petroleum chemistry, recovery ratio theory, petroleum and natural gas exploration techniques, petroleum and natural gas well engineering, shaft engineering, natural gas engineering, petroleum deposit engineering, pipe engineering for petroleum transport, pipe engineering for gas transport, petroleum and gas transport, simulation of petroleum and gas pipes, natural gas liquefaction technique, management theory and energy economics.

研修的主要课程有：政治理论课、外语课、工程数学、弹塑性力学、计算机应用技术、高等流体力学、高等渗流力学、油藏数值模拟、油田化学、采收率原理、现代油气勘探技术、现代油气井工程、现代凿井工程、天然气工程、高等油藏工程、高等采油工程、高等输油管道工程、高等输气管工程、油气田采输系统、油气管道运行模拟、天然气液化技术、高等管理学基础、能源经济等。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。