Major factors affecting the closure of marine carbonate caprock and their quantitative evaluation: A case study of Ordovician rocks on the northern slope of the Tazhong uplift in the Tarim Basin, western China

2017 ◽  
Vol 83 ◽  
pp. 231-245 ◽  
Author(s):  
Xiuxiang Lü ◽  
Yafang Wang ◽  
Hongfeng Yu ◽  
Zhongkai Bai
Keyword(s):  
Quantitative Evaluation ◽  
Tarim Basin ◽  
Western China ◽  
Northern Slope ◽  
Factors Affecting ◽  
Marine Carbonate ◽  
Major Factors ◽  
Tazhong Uplift

scholarly journals Paleozoic Carbonate Hydrocarbon Accumulation Zones in Tazhong Uplift, Tarim Basin, Western China

2009 ◽  
Vol 27 (2) ◽  
pp. 69-90 ◽  
Author(s):  
Xiuxiang Lü ◽  
Weiwei Jiao ◽  
Xinyuan Zhou ◽  
Jianjiao Li ◽  
Hongfeng Yu ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Oil And Gas ◽  
Carbonate Reservoirs ◽  
Source Rocks ◽  
Western China ◽  
Hydrocarbon Accumulation ◽  
Upper Ordovician ◽  
Marine Carbonate ◽  
Marine Source ◽  
Tazhong Uplift

Diverse types of marine carbonate reservoirs have been discovered in the Tazhong Uplift, Tarim Basin, and late alteration of such reservoirs is obvious. The marine source rocks of the Cambrian-lower Ordovician and the middle-upper Ordovician provided abundant oil and gas for hydrocarbon accumulation. The hydrocarbons filled various reservoirs in multiple stages to form different types of reservoirs from late Caledonian to early Hercynian, from late Hercynian to early Indosininan and from late Yanshanian to Himalayan. All these events greatly complicated hydrocarbon accumulation. An analysis of the discovered carbonate reservoirs in the Tazhong Uplift indicated that the development of a reservoir was controlled by subaerial weathering and freshwater leaching, sedimentation, early diagenesis, and alteration by deep fluids. According to the origin and lateral distribution of reservoir beds, the hydrocarbon accumulation zones in the Tazhong area were identified as: karsted reservoirs, reef/bank reservoirs, dolomite interior reservoirs, and hydrothermal reservoirs. Such carbonate hydrocarbon accumulation zones are distributed mainly in specific areas of the Tazhong uplift, respectively. Because of differences in the mechanism of reservoir formation, the reservoir space, capability, type and distribution of reservoirs are often different in different carbonate hydrocarbon accumulation zones.

Freight Vehicle Travel Time Analysis: A Case Study of Birgunj Nagdhunga Corridor

2021 ◽  
Vol 08 (02) ◽  
pp. 1-13
Author(s):  
Abhishek Jha ◽  
Keyword(s):  
Travel Time ◽  
Traffic Congestion ◽  
License Plate ◽  
Monitoring Method ◽  
Factors Affecting ◽  
Average Travel Time ◽  
Major Factors ◽  
Vehicle Travel Time ◽  
Freight Vehicles

This study covers the freight vehicle, which clears the custom clearance process for Kathmandu and transports the same goods to Kathmandu from Birgunj. In this study average travel time for freight vehicles from Birgunj to Nagdhunga has been studied, along with the factors affecting the travel time from Birgunj to Nagdhunga. License plate monitoring method of the freight vehicles was done to find the average travel time and a questionnaire survey was done to identify the factors affecting travel time of the freight vehicle. The travel time from Birgunj to Nagdhunga is different for different types of, vehicle and good. The fastest average travel time is of fixed container of 40 feet size with 23.2 hours and longest average time is for fixed container of 20 feet size with 28.95 hours. The average travel time for non-degradable goods is 26.5 hours and for degradable goods is 22.38 hours. Major factors affecting the travel time are traffic congestion along the route, bad road condition along the route and hilly road with sharp bends, turns and grade.

Terrestrial heat flow and crustal thermal structure in the northern slope of Tazhong uplift in Tarim Basin

Geothermics ◽  
2020 ◽  
Vol 83 ◽  
pp. 101709
Author(s):  
Yuchen Liu ◽  
Nansheng Qiu ◽  
Huili Li ◽  
Anlai Ma ◽  
Jian Chang ◽  
...  
Keyword(s):  
Heat Flow ◽  
Tarim Basin ◽  
Thermal Structure ◽  
Northern Slope ◽  
Terrestrial Heat Flow ◽  
Crustal Thermal Structure ◽  
Tazhong Uplift

Multi-layered ordovician paleokarst reservoir detection and spatial delineation: A case study in the Tahe Oilfield, Tarim Basin, Western China

2016 ◽  
Vol 69 ◽  
pp. 53-73 ◽  
Author(s):  
Fei Tian ◽  
Qiang Jin ◽  
Xinbian Lu ◽  
Yuhong Lei ◽  
Likuan Zhang ◽  
...  
Keyword(s):  
Tarim Basin ◽  
Western China ◽  
Tahe Oilfield

Factors affecting maintenance cost of public buildings: case study of Tanzania Buildings Agency and National Housing Corporation

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kassim Slim Zeni ◽  
Geraldine John Kikwasi
Keyword(s):  
Maintenance Cost ◽  
Public Buildings ◽  
Related Factors ◽  
Maintenance Costs ◽  
Content Type ◽  
Factors Affecting ◽  
Housing Corporation ◽  
Major Factors ◽  
National Housing

PurposeThe state of public buildings in Tanzania exhibits evidence of a lack of maintenance and repair. Despite efforts to raise the performance of public buildings, little emphasis is placed on maintenance works and related factors affecting maintenance costs of public buildings, which are often high. This study aims to examine factors affecting maintenance costs of public buildings.Design/methodology/approachThis was a case study involving two government building agencies – Tanzania Buildings Agency (TBA) and National Housing Corporation (NHC). A total of 387 tenants and 29 experts participated in the study. Data were collected using questionnaires and analyzed using Stata version 16 – descriptive statistics feature reporting absolute numbers and frequencies.FindingsBoth tenants and experts ranked building age, poor quality control, building material used, execution of work when it is urgent and inadequate financial resources as major factors affecting maintenance costs of public buildings. In the distinctive rating, tenants ranked resource management as a major factor, while experts ranked ignorance about the property of materials, misuse of buildings and faulty maintenance as major factors.Research limitations/implicationsThe study has some limitations such as geographical coverage which is limited to Dar es Salaam and Dodoma regions, hence missing information from other regions may have different experiences. Additionally, data were collected in a self-reported manner which could bring about information bias.Practical implicationsFindings of this study provide an insight on recent developments on the factors affecting maintenance cost of buildings using two cases of NHC and TBA which are single entities owning a substantial amount of housing units in Tanzania. Factors affecting the maintenance cost of public buildings identified in this study is a threshold for experts to devise strategies for minimizing maintenance costs.Originality/valueTo the best of the authors’ knowledge, this is the first study that assessed factors affecting maintenance cost in public buildings run by TBA and NHC from the tenant and expert perspectives.

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