The Duvernay project in Canada was taken as an example to summarize the advanced technology and engineering management model of shale oil and gas development in North America.Preliminary suggestions were put forward t...The Duvernay project in Canada was taken as an example to summarize the advanced technology and engineering management model of shale oil and gas development in North America.Preliminary suggestions were put forward to accelerate the commercial development of domestic continental shale oil and gas.The advanced technologies,valuable knowledge and rich experience were introduced,including the evaluation of geological target area of the project,rapid long horizontal drilling and completion,high-intensity fracturing,and well spacing optimization.In particular,the concept and connotation of the full-life cycle management of North American unconventional resource projects were analyzed.Its emphasis on early evaluation and risk management,and a highly competitive market environment have played an important role in promoting technological innovation and management innovation.In addition,the low-cost sharing system of industry-wide knowledge and experience and the management mode were applied.These management approaches are of great significance for reference in accelerating the exploration and development of unconventional resources in China.China possesses abundant shale oil and gas resources,which are an important replacement to guarantee the national oil and gas energy supply.However,due to the late start and special geological characteristics and engineering difficulties in China,there is a large gap in technology level and management mode compared with North America.According to the advanced experience and enlightenment of the shale oil and gas development in North America,a preliminary proposal to accelerate the development of shale oil and gas in China was made.展开更多
The paper explores the possibility of estimating the horizontal scale of fluctuation(dh)with limited CPTs.The following conditions are desirable:(1)the CPT depth is large;(2)there are more than two CPTs;(3)the CPT sep...The paper explores the possibility of estimating the horizontal scale of fluctuation(dh)with limited CPTs.The following conditions are desirable:(1)the CPT depth is large;(2)there are more than two CPTs;(3)the CPT separation distances are distinct and preferably less than 2 dh;and(4)the Whittle-Matérn auto-correlation model is adopted.展开更多
为增加对南半球气旋及爆发性气旋的理解,利用美国国家环境预报中心NCEP(National Centers for Environmental Prediction)提供的1(°)×1(°)FNL格点资料对南大洋2004~2007年3个夏季(12,1,2月)热带地区以外的...为增加对南半球气旋及爆发性气旋的理解,利用美国国家环境预报中心NCEP(National Centers for Environmental Prediction)提供的1(°)×1(°)FNL格点资料对南大洋2004~2007年3个夏季(12,1,2月)热带地区以外的气旋及爆发性气旋的位置及路径等特征进行统计分析,发现1月份为南大洋夏季气旋与爆发性气旋发生发展的高峰月,55°S~70°S为气旋分布最大值区,较多的气旋生成于南美洲东部、南极半岛附近,而爆发性气旋则大多生成于澳大利亚大陆西南50°S~60°S内,南极半岛东北部以及20°E,60°E附近,并且随着夏季向秋季过渡,南大洋气旋位置分布逐渐向高纬度集中。南大洋夏季气旋及爆发性气旋路径走向大多为东一东南走向,个别为东北走向。南大洋夏季气旋生命周期平均为2~6d,水平尺度平均约为1000km,爆发性气旋一般维持在1周左右,水平尺度平均约为3000km。特殊的地理环境使得南大洋气旋具有发生频率高、中心气压值低、水平尺度大等特点。展开更多
基金Supported by the Key Intergovernmental Special Project on International Science and Technology Innovation Cooperation(2016YFE0102400)
文摘The Duvernay project in Canada was taken as an example to summarize the advanced technology and engineering management model of shale oil and gas development in North America.Preliminary suggestions were put forward to accelerate the commercial development of domestic continental shale oil and gas.The advanced technologies,valuable knowledge and rich experience were introduced,including the evaluation of geological target area of the project,rapid long horizontal drilling and completion,high-intensity fracturing,and well spacing optimization.In particular,the concept and connotation of the full-life cycle management of North American unconventional resource projects were analyzed.Its emphasis on early evaluation and risk management,and a highly competitive market environment have played an important role in promoting technological innovation and management innovation.In addition,the low-cost sharing system of industry-wide knowledge and experience and the management mode were applied.These management approaches are of great significance for reference in accelerating the exploration and development of unconventional resources in China.China possesses abundant shale oil and gas resources,which are an important replacement to guarantee the national oil and gas energy supply.However,due to the late start and special geological characteristics and engineering difficulties in China,there is a large gap in technology level and management mode compared with North America.According to the advanced experience and enlightenment of the shale oil and gas development in North America,a preliminary proposal to accelerate the development of shale oil and gas in China was made.
文摘The paper explores the possibility of estimating the horizontal scale of fluctuation(dh)with limited CPTs.The following conditions are desirable:(1)the CPT depth is large;(2)there are more than two CPTs;(3)the CPT separation distances are distinct and preferably less than 2 dh;and(4)the Whittle-Matérn auto-correlation model is adopted.
文摘为增加对南半球气旋及爆发性气旋的理解,利用美国国家环境预报中心NCEP(National Centers for Environmental Prediction)提供的1(°)×1(°)FNL格点资料对南大洋2004~2007年3个夏季(12,1,2月)热带地区以外的气旋及爆发性气旋的位置及路径等特征进行统计分析,发现1月份为南大洋夏季气旋与爆发性气旋发生发展的高峰月,55°S~70°S为气旋分布最大值区,较多的气旋生成于南美洲东部、南极半岛附近,而爆发性气旋则大多生成于澳大利亚大陆西南50°S~60°S内,南极半岛东北部以及20°E,60°E附近,并且随着夏季向秋季过渡,南大洋气旋位置分布逐渐向高纬度集中。南大洋夏季气旋及爆发性气旋路径走向大多为东一东南走向,个别为东北走向。南大洋夏季气旋生命周期平均为2~6d,水平尺度平均约为1000km,爆发性气旋一般维持在1周左右,水平尺度平均约为3000km。特殊的地理环境使得南大洋气旋具有发生频率高、中心气压值低、水平尺度大等特点。