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Search Petrowiki: 1.12.2 Logging while drilling
...Category:1.12.2 Logging while drilling . Pages in category "...1.12.2 Logging while drilling" The following 7 pages are in this category, out of 7 total. A * Acoustic ...logging while drilling C * Collecting data ...
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...Induction logging Induction ...logging[1] was originally developed to measure formation resistivities in boreholes containing oil-based mu... combine these array measurements to focus the resulting log to the desired depth of investigation, while at the same time doing so with a high vertical resolution and minimizing cave effect. The log-forma...
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...PEH:Acoustic Logging Publication Information Petroleum Engineering Handbook Larry W. Lake, Editor-in-Chief Volu...Edward D. Holstein, Editor Copyright 2007, Society of Petroleum Engineers Chapter 3C - Acoustic Logging Doug Patterson, Baker Hughes and Stephen Prensky, SPE, Consultant Pgs. 167-242 ISBN 978-1-5556...methods cover a broad range of scales from millimeters to hundreds of meters (Fig. 3C.1 ). Acoustic logging is a subset of borehole-geophysical acoustic techniques. This chapter provides an overview of boreh...
The principles of borehole acoustic logging (and surface seismic methods) are based on the theory of wave propagation in an elastic medium, as detailed in several sources[3][4][5][6]. The oscillating motion generated by a sound source (transducer) in an elastic medium (rock formation) is called an elastic wave or acoustic wave (also called head or body waves). Wave theory predicts how an acoustic signal propagates through the borehole and formation. Snell's law explains how the acoustic signal behaves at the velocity boundary separating the borehole and the formation, that is, how it is transmitted into the formation and back to the receivers. Elasticity is the property of matter that causes it to resist deformation in volume or shape.
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...PEH:Resistivity and SP Logging Publication Information Petroleum Engineering Handbook Larry W. Lake, Editor-in-Chief Volu...Holstein, Editor Copyright 2007, Society of Petroleum Engineers Chapter 3B โ Resistivity and SP Logging T.D. Barber, A. Brie, and B.I. Anderson, Schlumberger Pgs. 89-165 ISBN 978-1-55563-120-8 Get ...permission for reuse Contents * 1 Fundamentals * 1.1 Earth Resistivity * 2 The Logging Environment * 3 Electrode Resistivity Devices * 3.1 Normal and Lateral Devices * 3.2 Laterologs ...
Resistivity logging is an important branch of well logging. Essentially, it is the recording, in uncased (or, recently, even cased) sections of a borehole, of the resistivities (or their reciprocals, the conductivities) of the subsurface formations, generally along with the spontaneous potentials (SPs) generated in the borehole. This recording is of immediate value for geological correlation of the strata and detection and quantitative evaluation of possibly productive horizons. The information derived from the logs may be supplemented by cores (whole core or sidewall samples of the formations taken from the wall of the hole). As will be explained later, several types of resistivity measuring systems are used that have been designed to obtain the greatest possible information under diverse conditions (e.g., induction devices, laterolog, microresistivity devices, and borehole-imaging devices). Many service companies offer resistivity-logging services, and most offer a Web-based catalog that describes each service.
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...Nuclear magnetic resonance (NMR) logging Nuclear magnetic resonance (NMR) has been, and continues to be, widely used in chemistry, physics...ly adapted this technology to petrophysical laboratory research and subsequently developed downhole logging tools for in-situ reservoir evaluation. Contents * 1 Purpose of NMR ...logging * 2 Historical development * 3 NMR physics * 3.1 In-gradient diffusion * 4 Nomenclature * 5 Re...
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...Taxonomy Contents * 1 Drilling * 2 Completions * 3 Production and operations * 4 Projects, facilities, and construction * 5 Re...afety, environment, and sustainability * 7 Management * 8 Data science and engineering analytics Drilling 1 ...Drilling 1.1 Well planning 1.1.1 Well site preparation 1.1.2 Authority for expenditures (AFE) 1.1.3 Tr...
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...ication Information Petroleum Engineering Handbook Larry W. Lake, Editor-in-Chief Volume II - Drilling Engineering Robert F. Mitchell, Editor Copyright 2006, Society of Petroleum Engineers Chapter...preventing blowouts by quickly forming a seal, (3) protecting the casing from shock loads in deeper drilling, and (4) sealing off zones of lost circulation or thief zones. Remedial cementing is usually done ... approach to remedial cementing is to avoid it by thoroughly planning, designing, and executing all drilling, primary cementing, and completion operations. The need for remedial cementing to restore a well ' ...
Remedial cementing requires as much technical, engineering, and operational experience, as primary cementing but is often done when wellbore conditions are unknown or out of control, and when wasted rig time and escalating costs force poor decisions and high risk. Squeeze cementing is a "correction" process that is usually only necessary to correct a problem in the wellbore. Before using a squeeze application, a series of decisions must be made to determine (1) if a problem exists, (2) the magnitude of the problem, (3) if squeeze cementing will correct it, (4) the risk factors present, and (5) if economics will support it. Most squeeze applications are unnecessary because they result from poor primary-cement-job evaluations or job diagnostics. Squeeze cementing is a dehydration process. A cement slurry is prepared and pumped down a wellbore to the problem area or squeeze target. The area is isolated, and pressure is applied from the surface to effectively force the slurry into all voids. The slurry is designed specifically to fill the type of void in the wellbore, whether it is a small crack or micro-annuli, casing split or large vug, formation rock or another kind of cavity. Thus, the slurry design and rate of dehydration or fluid loss designed into the slurry is critical, and a poor design may not provide a complete fill and seal of the voids.
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...Automated well construction The drilling process through automation is gaining greater acceptance within the upstream oil and gas industry. ...ce the well construction process. Well construction automation can help improve operational safety, drilling, control systems across multiple ...drilling rigs, customer specifications, and operational costs. Contents * 1 Improving operational efficie...
The drilling process through automation is gaining greater acceptance within the upstream oil and gas industry. Well construction is also moving into using automation as a means to enhance the well construction process. Well construction automation can help improve operational safety, drilling, control systems across multiple drilling rigs, customer specifications, and operational costs. Numerous industry representatives were surveyed to determine their specific needs for improving operational efficiencies, reducingNPT and increasing the overall quality of the wells drilled. All of them expressed a desire for collective improvements that would result in a significant increase in drilling performance through techniques.
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...y * 2 Engineered nanoparticles * 3 Applications in the oil and gas industry * 4 Exploration * 5 Drilling and completion * 5.1 ...Drilling fluids * 5.1.1 Fluid Loss Control and Wellbore stability * 5.1.2 Bit Balling * 5.1.3 Torque and ...Drag * 5.1.4 Removal of Toxic Gases * 5.2 Increase down hole tools life * 5.2.1 Drilling bits * 5.3 Down hole tools * 5.3.1 ...
Nanotechnology has become the buzz word of the decade! The precise manipulation and control of matter at dimensions of (1-100) nanometers have revolutionized many industries including the Oil and Gas industry. Its broad impact on more than one discipline is making it of increasing interest to concerned parties. Removal of Toxic Gases * 5.2 Increase down hole tools life * 5.2.1 Drilling bits * 5.3 Down hole tools * 5.3.1 Logging * 5.4 Production * 5.4.1 Recovery of hydrates * 5.4.2 Scale inhibition * 6 Reservoir characterization and management * 6.1 Enhanced oil recovery * 6.2 Nanosensors for hydrocarbon detection in oil-field rocks * 6.3 Oil-microbe detection tool using nano optical fibers * 6.4 Refining and processing * 7 Conclusions * 8 References * 9 Noteworthy papers in OnePetro * 10 See also * 11 External links * 12 Page champions * 13 Category Nanotechnology is the use of very small pieces of material, at dimensions between approximately 1 and 100 nanometers, by themselves or their manipulation to create new large scale materials, where unique phenomena enable novel applications. In simple terms, Nanotechnology is science, engineering, and technology conducted at the Nano-scale.
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... * Water High-molecular-weight waxes tend to deposit in the higher-temperature sections of a well, while lower-molecular-weight fractions tend to deposit in lower-temperature regions. Prior to solidificat... Removal of deposits Removal of wax deposits within a wellbore is accomplished by: * Cutting * Drilling * Chemical dissolution * Melting--the use of hot oil, hot water, or steam Of these, the use of h...e coiled tubing. For wellbore cleaning this is obviously less of a problem. References * 1.0 1.1 1.2 Garcia, M.C., Carbognani, L., Urbina, A. et al. 1998. Correlation Between Oil Composition and Paraf...
Many crudes contain dissolved waxes that can precipitate and deposit under the appropriate environmental conditions. These can build up in production equipment and pipelines, potentially restricting flow (reducing volume produced) and creating other problems. This page discusses how to anticipate, prevent, and remediate wax problems in production. Paraffin wax produced from crude oil consists primarily of long chain, saturated hydrocarbons (linear alkanes/n-paraffins) with carbon chain lengths of C18 to C75, having individual melting points from 40 to 70 C. This wax material is referred to as "macrocrystalline wax."
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