Multi-stage Controlled Acid Fracturing, A Unique Acid Stimulation System Proved Efficient in a Field of Bombay Offshore Basin - A Case Study

Author(s):  
Surendra Nainwal ◽  
Pawan Agarwal ◽  
Surajit Haldar
2001 ◽  
Vol 57 (1/2) ◽  
Author(s):  
Yolanda Dreyer

This study makes use of Ferdinand Hahn's insights (with Son of God as case study) to indicate how the naming of Jesus developed in stages. It is shown that the name Son of God was not used by Jesus. It functioned within the context of the cultic activities of early Christianity, was taken over from the surrounding religious, political and cultural world while its referential meaning shifted in the various layers. Hahn focuses on the multi-stage development of the Jesus tradition from an Aramaic "Judaism", through  a Hellenistic "Judaism" to a Gaeco-Roman stage. First the possible historical origins of the title Son of God are discussed, after which Hahn's view is taken into consideration.


Author(s):  
Daniel Romero-Rodriguez ◽  
Alex Savachkin ◽  
Weimar Ardila-Rueda ◽  
Alvaro Sierra-Altamiranda ◽  
Julio-Mario Daza-Escorcia
Keyword(s):  

2018 ◽  
Vol 11 (4) ◽  
pp. 90-109
Author(s):  
Mirosław Wylon ◽  
Agnieszka Kempa ◽  
Alicja Słowy ◽  
Justyna Chodkowska-Miszczuk

Summary Subject and purpose of work: Urban transport is a key element of the functioning of urban agglomerations around the world. As it is of strategic importance, the needs of its users have to be diagnosed. Due to the fact that students are the most numerous social group using public transport, particular attention should be paid to students as the real creators of the needs of urban transport. The paper aims to diagnose the challenges in urban transport shaped by the process of studentification based on the case study of Toruń. Materials and methods: The multi-stage research approach was adopted, among others a survey among students. The choice of the research area was determined by the fact that Toruń is one of the largest academic centres in Poland. Results: Toruń is experiencing the effects of the studentification process in different dimensions, including the spatial and transport facets. Conclusions: The majority of students use public transport, daily or several times a week. The most preferred means of transport is the tram owing to its relative speed and punctuality.


2017 ◽  
Author(s):  
Syed Munib Ullah Farid ◽  
Hassaan Ahmed ◽  
Shahid Hameed Mangi ◽  
Syed Dost Ali ◽  
Ijaz Ahmed ◽  
...  
Keyword(s):  

2021 ◽  
Author(s):  
Rencheng Dong ◽  
Mary F. Wheeler ◽  
Hang Su ◽  
Kang Ma

Abstract Acid fracturing technique is widely applied to stimulate the productivity of carbonate reservoirs. The acid-fracture conductivity is created by non-uniform acid etching on fracture surfaces. Heterogeneous mineral distribution of carbonate reservoirs can lead to non-uniform acid etching during acid fracturing treatments. In addition, the non-uniform acid etching can be enhanced by the viscous fingering mechanism. For low-perm carbonate reservoirs, by multi-stage alternating injection of a low-viscosity acid and a high-viscosity polymer pad fluid during acid fracturing, the acid tends to form viscous fingers and etch fracture surfaces non-uniformly. To accurately predict the acid-fracture conductivity, this paper developed a 3D acid fracturing model to compute the rough acid fracture geometry induced by multi-stage alternating injection of pad and acid fluids. Based on the developed numerical simulator, we investigated the effects of viscous fingering, perforation design and stage period on the acid etching process. Compared with single-stage acid injection, multi-stage alternating injection of pad and acid fluids leads to narrower and longer acid-etched channels.


2018 ◽  
Vol 19 (6) ◽  
pp. 1580-1601 ◽  
Author(s):  
Shakeel Ahmad Sofi ◽  
Fayaz Ahmad Nika ◽  
Mohd Shoib Shah ◽  
Ather Sidiq Zarger

The main aim of this study is to examine the impact of subliminal messages in TV advertisements on consumer behaviour. Though there are number of ways through which impact of subliminal advertisements can be unearthed, in the current study, behavioural approach was adopted, which included discussion on case study (group discussion on subliminal ads) followed by response on a questionnaire. A sample of 390 respondents was chosen from Kashmir division through multi-stage random sampling framework, which, by and large, consisted of young students being a part of higher education in the state of Jammu and Kashmir. Data was collected through structured questionnaire which was reliability tested and validated as well. Apart from exploratory factor analysis and confirmatory factor, discriminant analysis was also utilized for reliability, validity and data analysis, respectively. On the whole, the observations have been found considerable and it has been observed that mostly subliminal exposure inveigles young consumers and seduces them into illicit relationships through the subconscious mechanism. Besides it, subliminal advertising has paramount significance in determining purchase intentions and compulsive buying tendencies of a young consumer. Consumers under study have shown significant differences in their compulsive buying propensity after having being exposed to subliminal advertising. The present study has greater importance for welfare advocates who can utilize present work and suggestions, in particular, to safeguard youth from the tactics of subliminal exposure.


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