A new formulation for lightweight oil well cement slurry using a natural pozzolan

 Fluid loss during cementing operation in depleted reservoirs or in deep wells of reservoirs with low breakdown pressure is a major concern for maintaining well integrity. To overcome this problem, the weight of cement slurry is usually reduced. Although various slurry formulations have been proposed during the last decade, the cost and availability of required additives is still an important concern, especially when the oil price is low. The objective of this study is to make lightweight cement slurry with a density of 105 lb/ft3, using the combination of natural pozzolan and API class G cement.  In this study, a new formulation based on the optimum amount of a natural pozzolan and other additives is proposed. Based on the results of 24-hour compressive strength test and free water volume, 30% replacement of cement powder with pozzolan was selected as an optimal amount. Addition of more pozzolan into the slurry reduces its pumpability even at room temperature. Bottom-hole condition was simulated by increasing the temperature to 150°F and chemical additives were used to maintain the rheological properties of this slurry. Fluid loss control agent, dispersant and retarder were used at optimum values 0.5, 0.08 and 0.05 (%bwoc), respectively. The compressive strength of the cement rock was monitored at 3, 7 and 30 days, reaching 3528 psi after 30 days.Cited as: Larki, O., Norouzi Apourvari, S., Schaffifie, M., Farazmand, R. A new formulation for lightweight oil well cement slurry using a natural pozzolan. Advances in Geo-Energy Research, 2019, 3(3): 242-249, doi: 10.26804/ager.2019.03.0

Editors’ Introduction: An Overview of the Educational Administration and Leadership Curriculum: Traditions of Islamic Educational Administration and Leadership in Higher Education

This chapter provides an overview of several topics relevant to constructing an approach to teaching educational administration and leadership in Muslim countries. First, it places the topic in the context of the changing nature and critiques of the field that argue for a greater internationalisation to both resist some of the negative aspects of globalisation and to represent countries’ traditions in the professional curriculum. Then, it identifies literature that presents the underlying principles and values of Islamic education that guide curriculum and pedagogy and shape its administration and leadership including the Qur’an and Sunnah and the classical educational literature which focuses on aims, values and goals of education as well as character development upon which a ‘good’ society is built. This is followed by a section on the Islamic administration and leadership traditions that are relevant to education, including the values of educational organisations and how they should be administered, identifying literature on the distinctive Islamic traditions of leadership and administrator education and training as it applies to education from the establishment of Islam and early classical scholars and senior administrators in the medieval period who laid a strong foundation for a highly sophisticated preparation and practice of administration in philosophical writings and the Mirrors of Princes writings, and subsequent authors who have built upon it up to the contemporary period. The final section provides an overview of the chapters in this collection

Role of Government in an Era of Total Quality Management (TQM) and Globalization: Challenges and Opportunities

This article addresses the changing role of government in the rapidly changing environment of globalization, a process through which worldwide integration is pursued by forces of global capitalism. Government is challenged by conflicting and contradictory forces of globalization of corporate capitalism seeking absolute profit, while at the same pressures for quality services and quality assurance are mounting worldwide. As a result, an impossibility theorem develops, with new challenges and opportunities facing governments. Alternative theories of government are presented, and suggestions are offered on what government should do to promote quality assurance and TQM in the age of globalization. Copyright Springer Science + Business Media, Inc. 2005government, globalization, TQM, Quality Assurance (QA), public administration, capitalism, state, impossibility theorem, organizational performance, principal-agent theory,

Modern organizations : theory and practice, 2nd ed./ edit.: Ali Farazmand

xxix, 285 hal.; 24 cm