20 Years of Horizontal Multistage Completions: A Summary of Industry Evolution in Unconventional and Conventional Plays

2021 ◽  
Author(s):  
Alberto Casero
Keyword(s):  
Industrial Revolution ◽  
Source Rocks ◽  
Petroleum Engineering ◽  
Hydraulic Fractures ◽  
Paradigm Shifts ◽  
Geological Time ◽  
The Past ◽  
Sand Control ◽  
Recoverable Resources ◽  
The Right

Abstract In the past two decades, the advent of the Shale Gas Revolution (SGR) was made possible by the visionary idea that hydrocarbons contained in ultra-low permeability source rocks could be extracted using available technology. Usually, these hydrocarbons take geological time to migrate to higher permeability reservoir rocks until the right structural conditions evolve to extract as recoverable resources. However, paradigm shifts in drilling and completion engineering have enabled unlocking resources from these ultra-tight formations. The innovative idea at the base of this industrial revolution was the combination of horizontal well drilling and hydraulic fracturing, which allowed increasing the surface area available for hydrocarbon flow and overcame the slow and shallow hydrocarbon release from the source rock. This approach can be considered as a bridge between petroleum engineering based on radial diffusivity equation and mining engineering based on physically accessing and extracting the resource. To achieve the high number of hydraulic fractures needed for economical production, different execution techniques evolved and developed in what is known as horizontal multistage fracturing (HMSF) completions. Although HMSF is indescribably linked to SGR, it was surprisingly applied in tight gas formation and offshore sand control applications more than 30 or 40 years ago. SGR contributed to the fast development of new innovative systems engineered and deployed at scale all over North America land operations and was subsequently exported internationally in conventional, unconventional, land, and offshore applications. This paper will cover the most common HMSF completion systems types with a primary focus on unconventionals. It will encompass the evolution of these systems over the past several decades. It will also explore the opportunity case for conventional, and high permeability plays through a series of theoretical and real examples.

An updated stratigraphic framework for the Georgina Basin, NT and Queensland

2013 ◽  
Vol 53 (2) ◽  
pp. 487 ◽  
Author(s):  
Tegan Smith ◽  
Andrew P Kelman ◽  
Robert Nicoll ◽  
Dianne Edwards ◽  
Lisa Hall ◽  
...  
Keyword(s):  
Sedimentary Rocks ◽  
Hydrocarbon Exploration ◽  
Source Rocks ◽  
Geological Time ◽  
Geological Time Scale ◽  
The Past ◽  
The North ◽  
Stratigraphic Framework ◽  
Southern Central ◽  
Siliciclastic Rock

The Georgina Basin is a Neoproterozoic to Lower Devonian sedimentary basin covering 325,000 km2 of western Queensland and the NT. It is a northwest-southeast-trending extensional basin, with prospective conventional and unconventional hydrocarbon targets in Cambrian and Ordovician carbonate and siliciclastic rock units. The unconventional gas and oil potential of the basin has led to recent exploration interest, although the basin has been relatively less explored in the past. At the southern end of the basin, depocentres contain up to 2.2 km of Cambrian to Devonian sedimentary rocks, overlying Neoproterozoic sedimentary rocks more than 1.5 km thick. The basin succession thins toward the north, where Cambrian sediments overlie the McArthur Basin sediments in the Beetaloo Sub-basin. Biostratigraphic interpretations of the prospective southern, central and eastern regions of the basin have been revised to reflect the 2012 Geological Time Scale (Gradstein, Ogg, Schmitz, and Ogg, 2012), resulting in an updated chronostratigraphic framework for the basin. The revised biostratigraphic interpretations have implications for important hydrocarbon source rocks. For example, the limestone unit in the southern parts of the basin, generally regarded as the Thorntonia Limestone, is of a different age to the type section for this unit, located in the Undilla Sub-basin. Additionally, the basal hot shale of the Arthur Creek Formation is diachronous across the Dulcie and Toko synclines, which may have ramifications for hydrocarbon exploration. This revised chronostratigraphic framework (by Geoscience Australia) for the Georgina Basin provides a baseline for the first basin-wide assessment of the unconventional hydrocarbon potential of the basin.

COMMONWEALTH Forum: The Politics of Science or the Science of Politics

Commonwealth ◽  
2017 ◽  
Vol 19 (1) ◽  
Author(s):  
John Arway
Keyword(s):  
Public Policy ◽  
Natural Resource ◽  
Factual Information ◽  
The Past ◽  
Difference Of Opinion ◽  
History Of ◽  
The Right ◽  
Scientific Facts ◽  
Environmental Agency ◽  
Laws And Regulations

The challenges of including factual information in public policy and political discussions are many. The difficulties of including scientific facts in these debates can often be frustrating for scientists, politicians and policymakers alike. At times it seems that discussions involve different languages or dialects such that it becomes a challenge to even understand one another’s position. Oftentimes difference of opinion leads to laws and regulations that are tilted to the left or the right. The collaborative balancing to insure public and natural resource interests are protected ends up being accomplished through extensive litigation in the courts. In this article, the author discusses the history of environmental balancing during the past three decades from the perspective of a field biologist who has used the strength of our policies, laws and regulations to fight for the protection of our Commonwealth’s aquatic resources. For the past 7 years, the author has taken over the reins of “the most powerful environmental agency in Pennsylvania” and charted a course using science to properly represent natural resource interests in public policy and political deliberations.

Accelerating Agricultural Growth—Is Irrigation Institutional Reform Necessary? (Distinguishedl Lecture)

1996 ◽  
Vol 35 (4I) ◽  
pp. 399-417 ◽  
Author(s):  
John W. Mellor
Keyword(s):  
Growth Rates ◽  
Irrigation System ◽  
Institutional Reform ◽  
Residual Effect ◽  
Agricultural Growth ◽  
The Past ◽  
Major Reform ◽  
History Of ◽  
The Right ◽  
Economic Growth Rates

The right to the flow of income from water is vigorously pursued, protected, and fought over in any arid part of the world. Pakistan is of course no exception. Reform of irrigation institutions necessarily changes the rights to water, whether it be those of farmers, government, or government functionaries. Those perceived rights may be explicit and broadly accepted, or simply takings that are not even considered legitimate. Nevertheless they will be fought over. Pakistan has a long history of proposals for irrigation reform, little or none being implemented, except as isolated pilot projects. Thus, to propose major changes in irrigation institutions must be clearly shown to have major benefits to justify the hard battles that must be fought and the goodwill of those who might win those battles for reform. Proponents of irrigation institution reform have always argued the necessity of the reforms and the large gains to be achieved. Perhaps, however, those arguments have not been convincing. This paper will briefly outline the failed attempts at irrigation reform to provide an element of reality to the discussion. It will then proceed to make the case of the urgency of reform in a somewhat different manner to the past. Finally, current major reform proposals will be presented. This paper approaches justification of irrigation reform by focusing on the agricultural growth rate. It does so because that is the critical variable influencing poverty rates and is a significant determinant of over-all economic growth rates. The paper decomposes growth rates and suggests a residual effect of deterioration of the irrigation system that is large and calls for policy and institutional reform. The data are notional, suggesting the usefulness of the approach and paves the way for more detailed empirical analysis and enquiry for the future.

THE ROLE OF THE CIVIL SERVICE IN THE INDUSTRIALIZATION OF NIGERIA

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Chiemeka Onyema
Keyword(s):  
Public Service ◽  
Industrial Development ◽  
Industrial Revolution ◽  
National Development ◽  
Public Servants ◽  
Business Policy ◽  
Technological Base ◽  
Development Plans ◽  
Ease Of Doing Business ◽  
The Right

The goal of berthing Nigeria’s full-scale industrial revolution is yet to be achieved. All the industrial development plans have so far failed to accelerate the nation’s industrialization, hence the country’s low industrial base which has kept her in the league of developing nations. In fact, Nigeria has in recent times been experiencing deindustrialization, as several industries have collapsed and some others, such as Unilever and Michelin, have relocated to other countries. Several factors are responsible for Nigeria’s low industrial development and they include: inadequate infrastructure (particularly, energy), poor technological base, multiple taxes and levies, and, the shortage and high cost of foreign exchange. Despite a growing body of literature on industrialization in Nigeria, not much has been written about the link between Public Service Reforms and industrialization in Nigeria. This paper examines the links between the implementation of the Service Compact (SERVICOM) Charter and the achievement of Nigeria’s industrial development policies, especially the ‘Ease of Doing Business’ Policy. The paper makes the case that the goal of industrializing Nigeria will not be fully realised without an efficient Public Service. Furthermore, the paper highlights the need for Nigerian public servants to have the right work attitude, and to be morally upright and patriotic, in order to create a business-friendly environment and to build investor confidence, so as to facilitate and accelerate the country’s industrialization and overall national development. The author recommends that the Nigerian government should strengthen the implementation of the Servicom Charter and also incorporate the Charter into the industrialization plan.

Sleep in western culture

2018 ◽  
Author(s):  
Roger Ekirch
Keyword(s):  
Nineteenth Century ◽  
Sleep Deprivation ◽  
Industrial Revolution ◽  
Sleep Onset ◽  
Western Culture ◽  
The Past ◽  
Predominant Form ◽  
Artificial Illumination ◽  
Illness Anxiety

Although a universal necessity, sleep, as the past powerfully indicates, is not a biological constant. Before the Industrial Revolution, sleep in western households differed in a variety of respects from that of today. Arising chiefly from a dearth of artificial illumination, the predominant form of sleep was segmented, consisting of two intervals of roughly 3 hours apiece bridged by up to an hour or so of wakefulness. Notwithstanding steps taken by families to preserve the tranquillity of their slumber, the quality of pre-industrial sleep was poor, owing to illness, anxiety, and environmental vexations. Large portions of the labouring population almost certainly suffered from sleep deprivation. Despite the prevalence of sleep-onset insomnia, awakening in the middle of the night was thought normal. Not until the turn of the nineteenth century and sleep’s consolidation did physicians view segmented sleep as a disorder requiring medication.

Introduction

2018 ◽  
Author(s):  
Gianfranco Pacchioni
Keyword(s):  
Industrial Revolution ◽  
Homo Sapiens ◽  
Modern Society ◽  
Full Time ◽  
Human Race ◽  
Hunter Gatherers ◽  
The Past ◽  
The World ◽  
The Universe ◽  
Radical Transformation

About 10,000 years ago, at the beginning of the agriculturalrevolution, on the whole earth lived between 5 and 8 million hunter-gatherers, all belonging to the Homo sapiens species. Five thousand years later, freed from the primary needs for survival, some belonging to that species enjoyed the privilege of devoting themselves to philosophical speculation and the search for transcendental truths. It was only in the past two hundred years, however, with the advent of the Industrial Revolution, that reaping nature’s secrets and answering fundamental questions posed by the Universe have become for many full-time activities, on the way to becoming a real profession. Today the number of scientists across the globe has reached and exceeded 10 million, that is, more than the whole human race 10,000 years ago. If growth continues at the current rate, in 2050 we will have 35 million people committed full-time to scientific research. With what consequences, it remains to be understood. For almost forty years I myself have been concerned with science in a continuing, direct, and passionate way. Today I perceive, along with many colleagues, especially of my generation, that things are evolving and have changed deeply, in ways unimaginable until a few years ago and, in some respects, not without danger. What has happened in the world of science in recent decades is more than likely a mirror of a similar and equally radical transformation taking place in modern society, particularly with the advent ...

Disability and Work During the Industrial Revolution in Britain

2018 ◽  
Author(s):  
Daniel Blackie
Keyword(s):  
Disability Studies ◽  
Industrial Development ◽  
Industrial Revolution ◽  
Coal Industry ◽  
Historical Research ◽  
Disabled People ◽  
Industrial Sites ◽  
The Past ◽  
Paid Employment

A common claim in disability studies is that industrialization has marginalized disabled people by limiting their access to paid employment. This claim is empirically weak and rests on simplified accounts of industrialization. Use of the British coal industry during the period 1780–1880 as a case study shows that reassessment of the effect of the Industrial Revolution is in order. The Industrial Revolution was not as detrimental to the lives of disabled people as has often been assumed. While utopian workplaces for disabled people hardly existed, industrial sites of work did accommodate quite a large number of workers with impairments. More attention therefore needs to be paid to neglected or marginalized features of industrial development in the theorization of disability. Drawing on historical research on disability in the industrial workplace will help scholars better understand the significance of industrialization to the lives of disabled people, both in the past and the present.

Does the Injunction Gap Violate Implementers’ Fair Trial Rights Under the ECHR?

2020 ◽  
Author(s):  
Léon E Dijkman
Keyword(s):  
Human Rights ◽  
Case Law ◽  
Fair Trial ◽  
European Convention ◽  
The Past ◽  
European Court ◽  
The Subject ◽  
The Right ◽  
Federal Supreme ◽  
Validity Of A Patent

Abstract Germany is one of few jurisdictions with a bifurcated patent system, under which infringement and validity of a patent are established in separate proceedings. Because validity proceedings normally take longer to conclude, it can occur that remedies for infringement are imposed before a decision on the patent’s validity is available. This phenomenon is colloquially known as the ‘injunction gap’ and has been the subject of increasing criticism over the past years. In this article, I examine the injunction gap from the perspective of the right to a fair trial enshrined in Art. 6 of the European Convention on Human Rights. I find that the case law of the European Court of Human Rights interpreting this provision supports criticism of the injunction gap, because imposing infringement remedies with potentially far-reaching consequences before the validity of a patent has been established by a court of law arguably violates defendants’ right to be heard. Such reliance on the patent office’s grant decision is no longer warranted in the light of contemporary invalidation rates. I conclude that the proliferation of the injunction gap should be curbed by an approach to a stay of proceedings which is in line with the test for stays as formulated by Germany’s Federal Supreme Court. Under this test, courts should stay infringement proceedings until the Federal Patent Court or the EPO’s Board of Appeal have ruled on the validity of a patent whenever it is more likely than not that it will be invalidated.

The Specter of the Past: Reconstructing Conservative Historical Memory in South Korea

2021 ◽  
Vol 49 (3) ◽  
pp. 337-362
Author(s):  
Myungji Yang
Keyword(s):  
South Korea ◽  
Historical Memory ◽  
Political Legitimacy ◽  
New Right ◽  
Historical Narratives ◽  
Right Wing ◽  
Far Right ◽  
The Past ◽  
The Republic ◽  
The Right

Through the case of the New Right movement in South Korea in the early 2000s, this article explores how history has become a battleground on which the Right tried to regain its political legitimacy in the postauthoritarian context. Analyzing disputes over historiography in recent decades, this article argues that conservative intellectuals—academics, journalists, and writers—play a pivotal role in constructing conservative historical narratives and building an identity for right-wing movements. By contesting what they viewed as “distorted” leftist views and promoting national pride, New Right intellectuals positioned themselves as the guardians of “liberal democracy” in the Republic of Korea. Existing studies of the Far Right pay little attention to intellectual circles and their engagement in civil society. By examining how right-wing intellectuals appropriated the past and shaped triumphalist national imagery, this study aims to better understand the dynamics of ideational contestation and knowledge production in Far Right activism.

scholarly journals Sudden Unexpected Death Associated with Arrhythmogenic Cardiomyopathy: Study of the Cardiac Conduction System

Diagnostics ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1323
Author(s):  
Giulia Ottaviani ◽  
Graziella Alfonsi ◽  
Simone G. Ramos ◽  
L. Maximilian Buja
Keyword(s):  
Fibromuscular Dysplasia ◽  
Ventricular Myocardium ◽  
Conduction System ◽  
Cardiac Conduction ◽  
Future Research ◽  
Cardiac Conduction System ◽  
Arrhythmogenic Cardiomyopathy ◽  
Unexpected Death ◽  
The Past ◽  
The Right

A retrospective study was conducted on pathologically diagnosed arrhythmogenic cardiomyopathy (ACM) from consecutive cases over the past 34 years (n = 1109). The anatomo-pathological analyses were performed on 23 hearts diagnosed as ACM (2.07%) from a series of 1109 suspected cases, while histopathological data of cardiac conduction system (CCS) were available for 15 out of 23 cases. The CCS was removed in two blocks, containing the following structures: Sino-atrial node (SAN), atrio-ventricular junction (AVJ) including the atrio-ventricular node (AVN), the His bundle (HB), the bifurcation (BIF), the left bundle branch (LBB) and the right bundle branch (RBB). The ACM cases consisted of 20 (86.96%) sudden unexpected cardiac death (SUCD) and 3 (13.04%) native explanted hearts; 16 (69.56%) were males and 7 (30.44%) were females, ranging in age from 5 to 65 (mean age ± SD, 36.13 ± 16.06) years. The following anomalies of the CCS, displayed as percentages of the 15 ACM SUCD cases in which the CCS has been fully analyzed, have been detected: Hypoplasia of SAN (80%) and/or AVJ (86.67%) due to fatty-fibrous involvement, AVJ dispersion and/or septation (46.67%), central fibrous body (CFB) hypoplasia (33.33%), fibromuscular dysplasia of SAN (20%) and/or AVN (26.67%) arteries, hemorrhage and infarct-like lesions of CCS (13.33%), islands of conduction tissue in CFB (13.33%), Mahaim fibers (13.33%), LBB block by fibrosis (13.33%), AVN tongue (13.33%), HB duplicity (6.67%%), CFB cartilaginous meta-hyperplasia (6.67%), and right sided HB (6.67%). Arrhythmias are the hallmark of ACM, not only from the fatty-fibrous disruption of the ventricular myocardium that accounts for reentrant ventricular tachycardia, but also from the fatty-fibrous involvement of CCS itself. Future research should focus on application of these knowledge on CCS anomalies to be added to diagnostic criteria or at least to be useful to detect the patients with higher sudden death risks.

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