Cimentação

.-' .:...1 140 Fundamentals of Drilling Engineering .•~ of Portland Cement ~Composition main ingredient in almost all drilling cements is Portland cement, an artificial cement made by burning a blend of limestone and clay. This is the same basic type of cement used in making concrete. A slurry of Portland cement in water is ideal for use in wells because it can be pumped easily and hardens readily in an underwater environment. The name "Portland cement" was chosen by its inventor, Joseph Aspdin, because he thought the produced solid resembled a stone quarried on the Isle of Portland off the coast of England. A schematic representation of the manufacturing process for Portland cement is shown in Fig. 4.1. The oxides of calcium, aluminum, iron, and silicon react in the extreme temperature of the kiln (2,600 to 2,800°F), resulting in balls of cement clinker upon cooling. After aging in storage, the seasoned clinker is taken to the grinding mills where gypsum (CaS04-2HP) is added (1 to 3% by weight of cement) to control setting time and hardening of cement (strength). The units sold by the cement company are the barrel, which contains 376 Ibm or four 94-lbm sacks, or by U.S. tons (2,000 Ibm) and metric tonnes (2,205 Ibm). Cement chemists have found that there are four crystalline compounds in the clinker that hydrate to form or aid in the formation of a rigid structure. These are tricalcium silicate (3CaO-Si07 or C3S), dicalcium silicate (2CaO-SiO~ or C2S),…

This is a sample document for selenium testing. It has a lot more english text than spanish. Workroom Productions Paper: The Importance of Data in Functional Testing The Importance of Data in Functional Testing Author: Version: James Lyndsay 1.0 Author Biography James Lyndsay, Workroom Productions Ltd. James Lyndsay is an independent test consultant with ten years experience. Specialising in test strategy, he has worked in a range of businesses from banking and telecoms…

This is a sample document for selenium testing. It has a lot more english text than spanish. Workroom Productions Paper: The Importance of Data in Functional Testing The Importance of Data in Functional Testing Author: Version: James Lyndsay 1.0 Author Biography James Lyndsay, Workroom Productions Ltd. James Lyndsay is an independent test consultant with ten years experience. Specialising in test strategy, he has worked in a range of businesses from banking and telecoms…

This is a sample document for selenium testing. It has a lot more english text than spanish. Workroom Productions Paper: The Importance of Data in Functional Testing The Importance of Data in Functional Testing Author: Version: James Lyndsay 1.0 Author Biography James Lyndsay, Workroom Productions Ltd. James Lyndsay is an independent test consultant with ten years experience. Specialising in test strategy, he has worked in a range of businesses from banking and telecoms…

accessible Internet services as well as penetrating the firewall to find additional live systems. [pic] 4. Detect Vulnerabilities The SLB team then conducts the authorized attacks using public, custom, and professional tools, to search for vulnerabilities in the targets, which will allow access permission. These tests will expose compromised hosts that will be used as escalating points during the next stages. [pic] 5. Analyze and Plan Next the SLB team collates…

later to playback them. Here is the basic paradigm for GUI-based automated regression testing – the so called Record/Playback method (also called as Capture/Replay approach) 1. Design a test case in the test management tool. 2. Using the capture feature of the automation testing tool record the user actions. The result is a macro-like script where each user action is presented. 3. Enhance the recorded script with verification points, where some property or data is verified…

SQA Planning SQA Project Metrics SQA Software and Tools SQA Analysis SQA Approaches and Methodologies SQA Planning and Requirements SQA Lifecycle Standards SQA Implementation SQA Costs and Benefits Why SQA is 2. What is Software Quality Assurance? What is Software Quality Assurance Business software is never built overnight. It takes a lot of planning consultation and testing to be able to come up with an initial version of the application. If a business hurries up the development…

simufact.forming Experience Meets Simulation Global competition, smart R&D investments to create innovative products with the best possible quality at competitive prices, these are the challenges today’s forming industry is facing. It is helpful to get a detailed insight into development and manufacturing processes, to assure that innovative ideas will find their way into production - without the risk of failure within the development process. Today, companies in the forming…

effectively enhancing impact analysis in a timely fashion. 1. Introduction In a sustained system, impact analysis is required to make decisions prior to making system changes associated with new requirements [1]. System engineers are faced with the problem of analyzing nonfunctional impacts as well as functional impacts. There is a growing recognition of the role of the system engineer in determining the quality of a system. This analysis is driven by non-functional requirements such…

......... 75 W................................................................................ 75 X................................................................................. 78 Y................................................................................. 79 Z ................................................................................. 79 © Alpha Thames Ltd 2004 1 Dictionary of Oil Industry Terminology DEFINITIONS ACRONYMS and ABBREVIATIONS A AAV Annulus…