检索结果-南通市图书馆

A review on casing while drilling technology for oil and gas production with well control model and economical analysis

引用

Petroleum 2019年第1期5卷 1-12页

作者： dipal patel Vivek Thakar Sivakumar Pandian Manan Shah Anirbid Sircar School of Petroleum Technology Pandit Deendayal Petroleum UniversityGandhinagar382007India

The extraction of petroleum fluids from sub-surface accumulations mandates the drilling of a well into the formation containing the *** drilling techniques have evolved over time to overcome several challenges while some of the issues still prevail with the currently used drilling practices like loss circulation,large tripping time to change bottom hole assembly,stuck pipe problems and low well bore stability,to name a *** decrease the drilling efficiency and increase the Non-Productive Time(NPT)of this highly capitalintensive industry encouraging the Petroleum Industry to look for new *** while Drilling(CwD)is a technique of drilling which has been proven to alleviate many of the problems faced while *** this method,drilling and casing of a well bore is carried out simultaneously,which improves the drilling efficiency by reducing the *** has proven to be beneficial in controlling loss circulation and improving wellbore stability by‘Plastering’effect,high quality cement job and increased rig floor *** uses smaller rig and less fuel thereby reducing carbon footprint in the *** paper studies comprehensive well control and casing string design *** encourages its application that has been discussed in the paper.A case study on the application of CwD in Malay basin for top hole drilling is ***,the paper briefly outlines the technical challenges that need attention to get better results from CwD.

关键词： Casing while drilling Non productive time Plastering effect Well control

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Assessing suitability of Andrographis paniculata genotypes for rain-fed conditions in semi-arid climates

引用

Information Processing in Agriculture 2021年第2期8卷 359-368页

作者： Kuldeepsingh A.Kalariya Narendra A.Gajbhiye Ram Prasnna Meena Parmeshwar L.Saran dipal Minipara Sinora Macwan K.A.Geetha ICAR-Directorate of Medicinal and Aromatic Plants Research BoriaviAnandGujaratIndia

Medicinal plants are generally suggested for degraded land or areas having low *** paniculata is an important medicinal plant known for its diterpene lactone *** exposed 26 genotypes of *** to rain-fed condition during early-season rain-fed(ESRF)and mid-season rain-fed(MSRF)conditions and compared with the control to assess their suitability in semi-arid climate region of Gujarat,*** study was performed during two consecutive years 2016–2017 in split plot design with rain-fed conditions as main-plot treatment and genotypes as sub-plot treatment in three *** gaseous exchange parameters taken at 85100 days after transplanting exhibited mean photosynthesis rate was 20.5 lmol CO_(2) m^(-2)s^(-1) ranging between 15.9 lmol CO_(2) m^(-2)s^(-1) and 24.0 lmol CO_(2) m^(-2)s^(-1).Exceeding 7%decrease in stomatal conductance was recorded compared to the control plants under imposed rain-fed *** mean value of transpiration rate was 4.8 mmol H2O m^(-2)s^(-1).The mean value of water use efficiency was *** condition decreased leaf water potential from-0.517 to-1.189 *** dry herbage decreased by 29.2%due to MSRF condition as compared the *** andrographolide yield per plant suffered significantly and under ESRF condition it reduced mainly due to reduction in andrographolide *** andrographolide yield per plant in MSRF condition was mainly due to reduction in herbage *** revealed that ESRF and MSRF condition characterized by erratic rainfall pattern and dry spell is not beneficial for quality production in *** on the least decrease in andrographolide,yield two genotypes viz.,AP 6 and AP 12 identified to be suitable for ESRF condition and two genotypes viz.,AP 19 and AP 6 suitable for MSRF ***,four genotypes,AP 35,AP 39,AP 61 and AP 24 were suitable as the promising genotypes having high andrographolide yield.

关键词： Andrographis paniculata Andrographolide content Andrographolide yield Photosynthesis Rainfed condition Transpiration

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

GIS Based Identification and Assessment of Groundwater Quality Potential Zones in Puri City, India

引用

Journal of Water Resource and Protection 2011年第6期3卷 440-447页

作者： Ritesh Vijay dipal Samal P. K. Mohapatra 不详

Puri city is situated on the east coast of India and groundwater is the only source available to meet the potable water supply of the city. The objective of the study was to assess the impact of anthropogenic activities on groundwater quality and to identify the groundwater potential zones for drinking water production using GIS. Major sources of groundwater contamination in the city were open discharges of domestic sewage, inadequate sewerage system, open defecation, septic tanks, soak pits, contaminated water pools and unorganized solid waste dumping. Groundwater samples were collected and analyzed during post and pre monsoon to evaluate the drinking water quality as per Indian standards. The groundwater zones were prepared based on weighted index overlay analysis by assigning the weights based on the drinking water standards under different classes of individual water quality parameters. Finally, the potential zones were identified and assessed as suitable, moderately suitable and unsuitable for domestic purpose. Based on groundwater quality and geospatial analysis, measures were suggested to protect groundwater resources.

关键词： Groundwater Contamination Anthropogenic Activity Abstraction GIS

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

GIS Based Identification and Assessment of Groundwater Quality Potential Zones in Puri City, India

引用

Journal of Water Resource and Protection（水资源与保护） 2011年第6期 440-447页

作者： Ritesh Vijay dipal Samal P. K. Mohapatra

来源：评论

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：