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Cement is used to hold casing in place and to prevent fluid migration between subsurface formations. Cementing operations can be divided into two broad categories: primary …
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Cementing is the process of mixing a slurry of cement and water and pumping it down through casing to critical points in the annulus around the casing or in the open hole …
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A method may include obtaining, by a computer processor, a request to initiate a cementing procedure. The method may further include determining, by the computer processor, an automated sequence for the cementing procedure. The method may further include transmitting, by the computer processor and based on the automated sequence, …
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A method of initiating fluid circulation in a well bore through a casing inner diameter and an annulus outside the casing, the method having
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It is obvious from the above discussion that in both cases, the sources that lead to intrinsic self-healing are not infinite. Unhydrated cement grains eventually hydrate and in the carbonation process, after the initial crystal growth stage the cementitious matrix in the vicinity of the crack becomes less rich in the elements promoting precipitation of …
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MY8500918A - Method of cementing wells - Google Patents Method of cementing wells Info Publication number MY8500918A ... Malaysia Prior art keywords cementing wells cementing wells Prior art date Application number MY918/85A Inventor Robert Bruce Stewart Original Assignee Shell Int Research
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The new method of Dynamic Cementation, where pipe movement is maintained until cement begins to set, maximizes the mud-cement displacement process. It can achieve a high-quality completion using a combination of modern cementing software, real-time rig instrumentation and casing rotation/reciprocation with a CRT …
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ABSTRACT. Deepwater oil and gas resource development can be hindered by hydrates in the shallow layer, which proposed solution is to use a low-hydration early-strength insulating cement system to seal the hydrate layer. The paper establishes guidelines for evaluating the thermal insulation properties of cement rings and presents …
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Methods and systems for cementing casing in well bores drilled in subterranean formations, and more particularly, methods and systems for cementing casing in a well bore without surface casing or a we
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Five pastes and five mortar mixtures were prepared with increasing limestone content from 0 to 55 wt%, as shown in Table 2 which also includes the water-to-cement ratio (w/c) and the water-to-solid ratio (w/s). Standard natural sand (conform to EN 196) was used for the preparation of mortar samples, with the mass of sand being three times the …
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Abstract In order to overcome the disadvantages of traditional test devices and methods, new accelerated test device and efficient test method for critical chloride concentration (Ccrit) initiating steel depassivation in cement-based materials were developed. Based on the theory of electromigration, a new accelerated test device for …
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Radical Cations in Versatile High Performance Initiating Systems for Thermal, Redox, and Photopolymerizations. Macromolecules 2018, 51 ... Methods and Protocols 2023, 6 (2), 38. ... Identification of Free Radicals Generated by Different Curing Modes in a Dental Resin Cement. Applied Magnetic Resonance 2016, 47 (9), ...
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Cementing operations are initiated by lowering Plug Landing Nipple (PLN) before pumping cement after which cement pumping is done. During pumping operations, …
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A method of initiating fluid circulation in a well bore through a casing inner diameter and an annulus outside the casing, the method having the following steps: inducing an increas
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For technical assistance regarding cement-based concrete . paving, contact the Portland Cement Association or the CP Tech Center: Wayne Adaska, Director Pavements and Geotechnical Markets. Portland Cement Association 200 Massachusetts Avenue NW, Suite 200. Washington, DC 20001 847-972-9056. info@cement Peter …
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Relevant studies are compiled and broken into main sections such as current cementing methods and challenges, alternative cementitious materials, monitoring systems, and environmental impact.
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Oil and Gas Well Cementing for Engineers Practical approach covering the chemistry, processes, and modeling in the field of cementing engineering Oil and Gas Well Cementing for Engineers is a comprehensive and reader-friendly book that delves into the chemistry, processes, and modeling involved in cementing engineering in the oil and …
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Cement production contributes significantly to anthropogenic greenhouse gas emissions (GHG), a major contributor to global carbon emissions. The environmental impacts of cement production have grown in recent years and it is urgent to reduce its carbon footprint. Systems dynamics (SD) is a simulation method used to understand …
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A method of initiating fluid circulation in a well bore through a casing inner diameter and an annulus outside the casing, the method having
Details
A method may include obtaining, by a computer processor, a request to initiate a cementing procedure. The method may further include determining, by the computer processor, an automated sequence for the cementing procedure. The method may further include transmitting, by the computer processor and based on the automated sequence, …
Details
EP1774134A1 - Cementing methods and systems for initiating fluid flow with reduced pumping pressure - Google Patents Cementing methods and systems for initiating fluid flow with reduced pumping pressure ... cement composition Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not ...
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A method for cementing a casing in an open well bore having no surface casing, wherein an annulus is defined between the casing and the well bore, the method having: sealing the ann Methods and systems for cementing wells that lack surface casing - Badalamenti, Anthony M.
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The developed method, accounting for mechanical properties of a coupled casing-cement-rock system with the influence of temperature changes, applied internal pressures, and isotropic far-field ...
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A method of initiating fluid circulation in a well bore through a casing inner diameter and an annulus outside the casing, the method having the following steps: inducing an increase in the annulus fluid pressure; flowing cement composition into the annulus at the top of the well bore; maintaining a difference in pressure between the fluid ...
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To further prevent the drilling fluid from contaminating the cement, a 2-plug system is used. The one released ahead of cement slurry is called the bottom plug. It stops at the float collar, and pump pressure ruptures the diaphragm so that the cementing slurry can pass through it. ... Chapter 4 (Casing Running) discusses these issues, methods ...
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WO2006008475A1 - Cementing methods and systems for initiating fluid flow with reduced pumping pressure - Google Patents Cementing methods and systems for initiating fluid flow with reduced pumping pressure ... cement composition Prior art date Application number PCT/GB2005/002769 Other languages English (en) …
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In order to overcome the disadvantages of traditional test devices and methods, new accelerated test device and efficient test method for critical chloride concentration (Ccrit) initiating steel depassivation in cement-based materials were developed. Based on the theory of electromigration, a new accelerated test device for Ccrit was invented first by …
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Considering these points, it becomes evident that casing and cementing are fundamental components of deepwater drilling operations. In the subsequent section, we will delve into the specific importance of these techniques to gain a deeper understanding of their role in maintaining well integrity while exploring potential …
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Cement sheath integrity is a critical concern in the successful implementation of geologic carbon capture and storage (CCS) projects. Conventional ordinary Portland cement (OPC) is not thermodynamically compatible with the carbon dioxide (CO2) present in CO2 storage media. When OPC cement sheaths interact with …
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Dry pouring refers to a method of concrete placement where the dry concrete mix is poured into a form or mold, followed by the addition of water to initiate hydration and curing. ... such as dry mix trucks or mixing systems, involves higher initial costs compared to traditional wet mixing methods. Limited Application in Certain Conditions: ...
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A method of cementing a casing in a well bore, wherein an annulus is defined between the casing and the well bore, the method having the following steps: connecting a circulation …
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CA2574510C - Cementing methods and systems for initiating fluid flow with reduced pumping pressure - Google Patents Cementing methods and systems for initiating fluid flow with reduced pumping pressure ... cement composition Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not ...
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In this paper, we present an analytical method for evaluating the stress field within a casing-cement-formation system of oil/gas wells under anisotropic in-situ stresses in the rock formation and uniform pressure within the casing. The present method treats the in-situ stresses in the formation as initial stresses since the in-situ stresses have already …
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Erle P. Halliburton in 1921 patented an advanced technology for cementing wells that brought greater production and environmental safety to America's oilfields. With his "Method and Means for Cementing Oil Wells," the young inventor significantly improved how wells were completed after drilling.Halliburton was 27 years old when he founded …
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Primary cementing operations involve many geologic, chemical, and mechanical parameters and rank among the most important elements of well construction. The …
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2.2. Preparation of cement samples. The preparation of cementing system A was carried out employing a modified test procedure (longer mixing time; lower shear rates) as set forth in Recommended Practice for Testing Well Cements, API Recommended Practice 10 B, issued by the American Petroleum Institute [26].Cementing systems B, …
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For the rheology-based methods, The FCT101 type fresh concrete tester is widely used, which can quickly estimate the slump, water-cement ratio and other properties [16, 17]. These testing methods are easy to be conducted, and the test results can reflect the fluidity of fresh concrete, but none of them can monitor the workability and the mixing ...
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