Fresh po rtable water that is free from organic matter and oil is ... To study the effect of partial replacement of cement by fly-ash, studies have been conducted on concrete mixes with 300 to ...
Well cementing is the process of introducing cement to the annular space between the well-bore and casing or to the annular space between two successive casing strings. Most commonly, cementing is used to permanently shut off water penetration into the well. ... Alternatives to Fly Ash. Oil drilling companies, concrete suppliers, and ...
Oil well cementing is big business in many parts of North America, and cementitious blends would not work the same without using fly ash. This light-weight pozzolanic material provides an ideal mix of down hole performance and cost savings.
Fly ash based geopolymer cement has been recently investigated as a low-cost, environmentally friendly alternative to Portland cement. This research develops a novel formulation of Class C fly ash based geopolymer and investigates its applicability as an alternative to Portland cement in …
Fly ashes have found utility in numerous oil and gas well cementing applications, namely: 1) fly ash can be dry-blended with regular Portland cements or hydrated lime for use in primary cementing; 2) lightweight cement compositions can be formulated by adding lime and finely ground quartz to fly ash/cement mixtures; and 3) an ultralight-weight ...
Khalifeh M, Saasen A, Vralstad T, Hodne H (2014) Potential utilization of Class C fly ash-based geopolymer in oil well cementing operations. Cement Concr Compos 53:10–17. CAS Article Google Scholar Komnitsas K, Zaharaki D (2007) Geopolymerisation: a review and prospects for the minerals industry.
A new technology called geopolymeric cement system is developed from the secondary byproducts of the industry to replace the conventional cement slurry in oil well cementing operation. This study focus on the preparation of cement slurry with new formulation using fly ash and alkali binders at two sodium hydroxide treatment methods with various ...
Petroleum Engineering under the title ''New Formulation of Fly Ash Class C Based Geopolymer for Oil Well Cementing''. Paper II: Pages 82 - 108, have been submitted to The Journal of Petroleum Science and Engineering, under the tittle ''Investigating Rheological and Mechanical Performance
Evaluation of Guinea Corn Husk Ash as Oil-Well Cement Slurry Extender S. A. Marfo, W. A. Owusu* and E. M. Amarfio Department of Petroleum Engineering, University of Mines and Technology, Tarkwa, Ghana. 1. INTRODUCTION Extenders are a class of additives used in preparing cement slurry for cementing operations in the oil and gas industries.
The current Portland Fly Ash cement is widely used in both construction and oil well cementing process. This paper will focus on cement for oil well cementing process only. Volcanic tuff, which is consolidated volcanic ash largely made up of silicon dioxide and calcium
Fly ash based geopolymer cement has been recently investigated as a low-cost, environmentally friendly alternative to Portland cement. This research develops a novel formulation of Class C fly ash based geopolymer and investigates its applicability as an alternative to Portland cement in hydrocarbon well cementing.
The present invention provides fly ash cementing compositions and methods which are useful in any cementing application, and are particularly suitable for cementing in subterranean zones penetrated by well bores. The cementing compositions can include a portion of the drilling fluid used to drill a well bore as a component thereof. Also, drilling fluid can be disposed of by combining it with ...
1. n. [Drilling Fluids] The noncombustible residue from the burning of pulverized coal.Fly ash is pozzolanic and is frequently used to replace a portion of the cement and reduce its density.
In this study, the potential utilization and performance of the class C fly ash (CFA) geopolymers in oil well cementing operations have been considered under high pressure and high temperatures of curing. 2. Experimental procedures2.1. Materials
way for the beneficiation of South African CFA in the petroleum, oil, and gas industry. oil well cementing, coal fly ash, sodium silicate, compressive strength. * School of Chemical and Metallurgical Engineering, Faculty of Engineering and the Built Environment, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa.
An alternative cement system created through geopolymerization of fly ash offers favorable properties such as able to resist acidic fluids and possess high compressive strength. However, the application of fly ash geopolymer as wellbore cement under carbon dioxide (CO2) environment at elevated temperature is not well recorded in the literature. This paper characterizes the fly ash-based ...
@article{osti_7212284, title = {API specification for oil-well cements and cement additives}, author = {}, abstractNote = {Standards for cements and additives used during oil and gas well cementing are presented. Requirements for bentonite, barite, and fly ash are given along with information on cement marking, packaging and storage, and inspection.
Fly ash based geopolymer cement has been recently investigated as a low-cost, environmentally friendly alternative to Portland cement. This research develops a novel formulation of Class C fly ash based geopolymer and investigates its applicability as an alternative to Portland cement in hydrocarbon well cementing.
substitute for Portland Fly ash cement in oil well cementing process. For the current time, there is no economic value for using tuff in Lawin. The study of the rock (tuff) characteristic and the new cement formed is important for both geological field and oil and gas cementing industry. The current Portland
A cementing composition of this invention containing drilling fluid and used to perform well cementing operations or to solidify drilling fluid as a part of its disposal is basically comprised of the fine particle size ASTM Class C or equivalent fly ash described above, a dispersing agent, preferably the condensation polymer product of acetone ...
Ensuring oil-well-integrity is one of the challenging tasks when cementing is designed. It has been well established that cement tends to degrade when exposed to a corrosive environment and at elevated temperatures. This paper presents the results of the uniaxial compressive strength of the qualified mixes of geopolymer cement containing fly ash as the precursor. Geopolymer cement …
Bentonite is a natural pozzolanic material that is abundant in nature. This pozzolanic property is enhanced upon heat treatment; however, this material has never been explored in oil-well cementing in such form. This study compares the performance of 13-ppg heated (dehydroxylated) sodium bentonite and fly-ash cement systems.
Class F fly ash based geopolymer cement has been identified as a potential replacement due to its abundant availability and to address waste management issues. The lack of research and a standard formulation for geopolymer cement has hindered the efforts to apply geopolymer cement for oil well cementing operations.
The study here presents laboratory testing results of Class F fly ash geopolymer for oil well cementing applications. The challenge reported in literature for the short thickening time of ...
cement and Fly Ash Geopolymer (FAGP) cement pertaining to the identified facto rs were made. In addition, a thorough analysis on the factors affecting the properties of geopolymer in reg ards to its application in oil well cementing was performed.
A recycled material that enhances your mix. Fly ash is a fine powder that comes from coal combustion, typically resulting from power generation, and one of the construction industry's most commonly-used pozzolans. Pozzolans are siliceous or siliceous/aluminous materials which can form cementitious compounds when mixed with lime and water.
With the increasing awareness of global warming, geopolymer cement has been identified as one of the methods in reducing the emission of CO2 during oil well cementing operation. However, it is important that geopolymer cement can meet the specific requirement of oil well condition in order to be the substitute of current conventional cement system.
Fly ash based geopolymer cement has been recently investigated as a low-cost, environmentally friendly alternative to Portland cement. This research develops a novel formulation of Class C fly ash based geopolymer and investigates its applicability as an alternative to Portland cement in …
Performance evaluation of South African coal fly ash- derived sodium silicate in oil well cementing operation. Southern African Institute of Mining and Metallurgy (SAIMM) Journal. (under review). 2. Daramola M. O., Kaduku T. & Iyuke S. E. (2015). Beneficiation of South African coal-fly ash in oil well cement operation, In: Proceedings
34 Keywords: Oil well cementing, coal fly ash, sodium silicate, compressive strength 35 36 37 . 2 38 Introduction 39 During the oil and gas well cementing process, some wells often possess lost circulation 40 zones, and therefore prone to formation breakage. Often, low density slurries are …
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