江汉盆地南部监利地区浅层生物气的发现及成因

江汉盆地南部监利地区由于农田灌溉打水井,偶然发现井水抽出时伴有气体流出,点燃后能长时间燃烧。为此,对该地区的浅层气进行了采样分析。结果表明,浅层天然气气样CH₄含量介于44.11%~51.57%之间,均值为47.03%,不含C₂H₆及其他重烃气体,干燥系数(C₁/C_1-5)为1,属典型干气。CH₄碳同位素值介于-70.8‰ ~-71.0‰之间,均值为-70.9‰,CH₄氢同位素值介于 -223‰~-226‰之间,均值为-224‰,CO₂碳同位素值介于-12.6‰~-14.7‰之间,均值为-13.9‰,同位素特征表明研究区浅层气为氢气还原二氧化碳途径生成的生物气。通过与江浙-沿海平原、长江三角洲和洞庭盆地的第四系浅层生物气赋存特征进行对比,进一步明确了研究区内第四系生物气成藏特征,认为研究区第四系浅层生物气具有进一步勘察和研究的潜力。     

基于多元统计方法的油气成藏关键因素筛选与分析——以江陵凹陷新沟嘴组岩性油藏为例

岩性油藏是江汉盆地江陵凹陷未来油气勘探的重要领域,但其成藏控制因素尚未进行系统研究。基于多元统计方法开展了岩性油藏成藏控制因素筛选分析,提出储层条件是江陵凹陷古近系新沟嘴组岩性油藏成藏的关键因素。江陵凹陷新沟嘴组沉积期处于咸化湖盆沉积环境,硬石膏胶结物含量对新沟嘴组岩性油藏砂岩储层致密化起到主要控制作用。其中,硬石膏胶结物含量达7.5%是储层物性的临界值,当含量小于7.5%时物性好,当含量大于7.5%时储层物性变差明显,测井解释偏干。可利用古水深与硬石膏含量的关系,划分有利储层的分布。     

Bearing capacity of isolated square footing resting on contaminated sandy soil with crude oil

The main objective of this paper is the evaluation of bearing capacity of isolated square footing resting on clean and oil-contaminated sand. The study is aimed at determining the effect of percentage of oil content in sand and the depth of the contaminated sand layer under the footing on the bearing capacity of footing. A series of routine laboratory tests were carried out on sand to obtain the physical, mechanical, and chemical properties. Crude oil is used as a contamination material. The research-included the completion of experimental work that consists of a series of loading tests carried on model of isolated square footing resting on clean and oil-contaminated sand. The contaminated sand layers were prepared by mixing the sand with crude oil at percent (10 and 20) % by weight of dry sand to simulate the field conditions. The depth of contaminated sand layer (d) under the footing was chosen depending on the footing width (B) as expressed by (d/B) ratio and varied as (0.5, 1, 1.5 and 2) to simulate the field conditions. The results showed that the contamination influences the load-settlement curves and leads to a reduction in its bearing capacity. The bearing capacity of the footing decreases significantly with increasing both the percentage of oil content and the depth of the contaminated sand layer. The results also showed that the presence of oil in sand changes the mode of shear failure in sand under the footing from local shear failure to the punching shear failure.     

Companies

Net earnings after pre-tax profits. Profiles include: Anadarko Petroleum, Chevron Texaco, Conoco Phillips, Exxon Mobil, Occidental, Schlumberger, YPF SA, EnCana Corporation, Imperial Oil, Petroleo Brasileiro, Total SA, E.ON, ENI, Repsol, Ecopetrol SA, Norsk Hydro, Statoil, Devon Energy Corporation. BP, Shell, BHP Billiton, CNOOC, Sinopec and PetroChina. Updated on a monthly basis.     

Companies

Net earnings after pre-tax profits. Profiles include: Anadarko Petroleum, Chevron Texaco, Conoco Phillips, Exxon Mobil, Occidental, Schlumberger, YPF SA, EnCana Corporation, Imperial Oil, Petroleo Brasileiro, Total SA, E.ON, ENI, Repsol, Ecopetrol SA, Norsk Hydro, Statoil, Devon Energy Corporation. BP, Shell, BHP Billiton, CNOOC, Sinopec and PetroChina. Updated on a monthly basis.     

Companies

Net earnings after pre-tax profits. Profiles include: Anadarko Petroleum, Chevron Texaco, Conoco Phillips, Exxon Mobil, Occidental, Schlumberger, YPF SA, EnCana Corporation, Imperial Oil, Petroleo Brasileiro, Total SA, E.ON, ENI, Repsol, Ecopetrol SA, Norsk Hydro, Statoil, Devon Energy Corporation. BP, Shell, BHP Billiton, CNOOC, Sinopec and PetroChina. Updated on a monthly basis.     

Oil Demand and Stocks

Current data of world oil demand. This includes international bunkers and refinery fuel. Updated on a monthly basis. Current data of oil demand from counties such as Canada, the United States of America, Japan, OECD Europe, Belgium, France, Germany, Italy, Netherlands, Spain, Sweden, the United Kingdom, Australia, Mexico, Republic of Korea, and Turkey. Updated on a monthly basis. Current data for crude oil and refined product stocks in Canada, Chile, Mexico, the United States (Western Hemisphere), France, Germany, Italy, Netherlands, Spain, the United Kingdom and Other Europe (Europe), Japan, Republic of Korea, Other Pacific (Asia-Pacific), and Total OECD (Table 12.1) Current data for refined product stocks in the OECD Western Hemisphere, OECD Europe, OECD Asia-Pacific and Total OECD. Products include gasoline, diesel and gasoil, and heavy fuel oil. Updated on a monthly basis (Table 12.2).     

Oil Demand and Stocks

Current data of world oil demand. This includes international bunkers and refinery fuel. Updated on a monthly basis. Current data of oil demand from counties such as Canada, the United States of America, Japan, OECD Europe, Belgium, France, Germany, Italy, Netherlands, Spain, Sweden, the United Kingdom, Australia, Mexico, Republic of Korea, and Turkey. Updated on a monthly basis. Current data for crude oil and refined product stocks in Canada, Chile, Mexico, the United States (Western Hemisphere), France, Germany, Italy, Netherlands, Spain, the United Kingdom and Other Europe (Europe), Japan, Republic of Korea, Other Pacific (Asia-Pacific), and Total OECD (Table 12.1) Current data for refined product stocks in the OECD Western Hemisphere, OECD Europe, OECD Asia-Pacific and Total OECD. Products include gasoline, diesel and gasoil, and heavy fuel oil. Updated on a monthly basis (Table 12.2).     

Oil Demand and Stocks

Current data of world oil demand. This includes international bunkers and refinery fuel. Updated on a monthly basis. Current data of oil demand from counties such as Canada, the United States of America, Japan, OECD Europe, Belgium, France, Germany, Italy, Netherlands, Spain, Sweden, the United Kingdom, Australia, Mexico, Republic of Korea, and Turkey. Updated on a monthly basis. Current data for crude oil and refined product stocks in Canada, Chile, Mexico, the United States (Western Hemisphere), France, Germany, Italy, Netherlands, Spain, the United Kingdom and Other Europe (Europe), Japan, Republic of Korea, Other Pacific (Asia-Pacific), and Total OECD (Table 12.1) Current data for refined product stocks in the OECD Western Hemisphere, OECD Europe, OECD Asia-Pacific and Total OECD. Products include gasoline, diesel and gasoil, and heavy fuel oil. Updated on a monthly basis (Table 12.2).     

泡沫油油藏模拟气泡含量变化初探

随着稠油冷采开采技术的发展,泡沫油油藏模拟作为该领域的重要方向之一,其开采过程中气泡变化情况的研究占有着重要地位。本文结合泡沫油油藏开采过程的表征特性与流动模型,进行了在泡沫油油藏开采过程中气泡含量的变化探究,助力于稠油冷采技术的发展。