First Multi-Stage Swell packers Open Hole Completion in Rub Al-Khali Empty desert: Case Study

2011 ◽  
Author(s):  
Joseph Ekpe ◽  
Andrey Kompantsev ◽  
Jamal Al-Thuwaini ◽  
Yuri Belousov ◽  
Ayman Ashoor ◽  
...  
Keyword(s):  
Multi Stage ◽  
Open Hole

Case Study on Successful Deployment of Open Hole Multi Stage Fracturing Completion at a Mature Gas Condensate Field in Pakistan

2017 ◽  
Author(s):  
Syed Munib Ullah Farid ◽  
Hassaan Ahmed ◽  
Shahid Hameed Mangi ◽  
Syed Dost Ali ◽  
Ijaz Ahmed ◽  
...  
Keyword(s):  
Gas Condensate ◽  
Multi Stage ◽  
Open Hole

Study on Axial Force of Multi-Stage Fracturing String in Horizontal Wells

2013 ◽  
Vol 790 ◽  
pp. 381-385
Author(s):  
Hong Qiang Zhang ◽  
Bao Kui Gao ◽  
Xuan Zhuo Han ◽  
Xing Qin ◽  
Wei Wang
Keyword(s):  
Axial Force ◽  
Working Process ◽  
Model Case ◽  
Multi Stage ◽  
Fracturing Process ◽  
Open Hole ◽  
Original Direction ◽  
Pressure Changes ◽  
Direction Opposite

In order to investigate packer failures during multi-stage fracturing in horizontal open-hole wells, mechanical model is established according to the working process of multi-stage fracturing. The influence of temperature and pressure changes on packers and tubing string is considered in this model. Case study indicated that force in each packer changes obviously in different fracturing stage; the force on the hanger is large in the whole fracturing process, and it will change direction opposite to the original direction in the last fracturing interval; in a given fracturing interval, the force in the upper packer is much higher than that in the lower packer; due to the restriction of the packers, the axial force distribution of the tubing is not smooth and changes abruptly at packers. Therefore, the pressure bearing capacity of packers should be taken into account during design and operation, and based on which appropriate packers and operation parameters be selected.

Logging Optimization and Data Analysis Enabling Bypass Pay Identification and Hydrocarbon Quantification with Advanced Pulsed Neutron Behind Casing

2021 ◽  
Author(s):  
Sviatoslav Iuras ◽  
Samira Ahmad ◽  
Chiara Cavalleri ◽  
Yernur Akashev
Keyword(s):  
Cross Section ◽  
Pore Space ◽  
High Energy ◽  
Elastic Cross Section ◽  
Gas Production ◽  
Donets Basin ◽  
Lithology Identification ◽  
Open Hole ◽  
Pulsed Neutron

Abstract Ukraine ranks the third largest gas reserves in Europe. Gas production is carried out mainly from the Dnieper-Donets Basin (DDB). A gradual decline in reserves is forcing Ukraine to actively search for possible sources to increase reserves by finding bypassed gas intervals in existing wells or exploration of new prospects. This paper describes 3 case studies, where advanced pulsed neutron logging technology has shown exceptional value in gas-bearing layer identification in different scenarios. The logging technology was applied for formation evaluation. The technology is based on the neutron interaction with the minerals and the fluids contained in the pore space. The logging tool combines measurements from multiple detectors and spacing for self-compensated neutron cross-capture section (sigma) and hydrogen index (HI), and the Fast Neutron Cross Section (FNXS) high-energy neutron elastic cross section rock property. Comprehensive capture and inelastic elemental spectroscopy are simultaneously recorded and processed to describe the elemental composition and the matrix properties, reducing the uncertainties related to drilling cuttings analysis, and overall, the petrophysical evaluation combined with other log outputs. The proposed methodology was tested in several wells, both in open hole and behind casing. In the study we present its application in three wells from different fields of the DDB. The log data acquisition and analysis were performed across several sandstone beds and carbonates formation with low porosities (<10%), in various combinations of casing and holes sizes. The results showed the robustness and effectiveness of using the advanced pulsed neutron logging (PNL) technologies in multiple cases: Case Study A: Enabling a standalone cased hole evaluation and highlighting new potential reservoir zones otherwise overlooked due to absence of open hole logs. Case Study B: Finding by-passed hydrocarbon intervals that were missed from log analysis based on conventional open hole logs for current field operator. Case Study C: Identifying gas saturated reservoirs and providing solid lithology identification that previously was questioned from drilling cuttings in an unconventional reservoir.

DETERMINING THE DENSITY OF MULTIPLE LAYERS USING GAMMA SPECTROSCOPY

2021 ◽  
Author(s):  
Mayir Mamtimin ◽  
◽  
Jeffrey Crawford ◽  
Keyword(s):  
Gamma Spectroscopy ◽  
Laboratory Data ◽  
Hole Density ◽  
Radial Density ◽  
New Approach ◽  
Simulation Tools ◽  
Radial Density Profile ◽  
Gamma Density ◽  
Open Hole

Due to the volumetric nature of the physics and the measurement, traditional gamma-gamma density tools measure an average bulk density of the formation. However, a bulk measurement is not adequate for certain applications where a more detailed resolution of a radial density profile is necessary. In this paper, a new approach of gamma spectral analysis is introduced focusing on the main Compton scattering angles. Several energy windows are linked to the unique radial layers based on scattering angles and location of interaction. As a result, the density of multiple layers can be calculated. The paper first outlines the main principles and analytical structures to formulate two methods to measure layer densities. Then computer simulation tools are used to simulate realistic tool configuration and measurement response to validate and benchmark efficacies of the outlined methods. Finally, a case study is presented to demonstrate the applicability of these methods using laboratory data. The paper is concluded with a list of other possible applications such as open-hole density and behind-pipe evaluation where layer density can provide more details for the analysis.

scholarly journals Son-of-God traditions in the Synoptic Gospels: Ferdinand Hahn's diachronic perspective

2001 ◽  
Vol 57 (1/2) ◽  
Author(s):  
Yolanda Dreyer
Keyword(s):  
Early Christianity ◽  
Synoptic Gospels ◽  
Son Of God ◽  
Multi Stage ◽  
Stage Development ◽  
Hellenistic Judaism ◽  
Cultural World ◽  
Historical Origins

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.

Multi-Stage Recovery Resilience: A Case Study of the Dique Canal

2019 ◽  
pp. 428-442
Author(s):  
Daniel Romero-Rodriguez ◽  
Alex Savachkin ◽  
Weimar Ardila-Rueda ◽  
Alvaro Sierra-Altamiranda ◽  
Julio-Mario Daza-Escorcia
Keyword(s):  
Multi Stage

scholarly journals Challenges of Urban Transport in the Face of Studentification – A Case Study of Toruń

2018 ◽  
Vol 11 (4) ◽  
pp. 90-109
Author(s):  
Mirosław Wylon ◽  
Agnieszka Kempa ◽  
Alicja Słowy ◽  
Justyna Chodkowska-Miszczuk
Keyword(s):  
Public Transport ◽  
Research Area ◽  
Urban Transport ◽  
Research Approach ◽  
Relative Speed ◽  
Multi Stage ◽  
The World ◽  
The Face ◽  
Different Dimensions

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.

Sign in / Sign up

Export Citation Format

Share Document