Download or read book Development and application of a drilling hydraulics simulator including pressure and temperature dependent fluid density and rheology behavior written by Benjamin Ames Leonard and published by . This book was released on 2006 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory and Applications of Drilling Fluid Hydraulics written by EXLOG/Whittaker and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this book are (1) to serve as a reasonably comprehensive text on the subject of drilling hydraulics and (2) to provide the field geologist with a quick reference to drilling hydraulics calculations. Chapter 1 introduces the basic principles of fluid properties, and Chapter 2 presents the general principles of fluid hydraulics. Chapters 3 through 10 analyze specific hydraulic considerations of the drilling process, such as viscometric measurements, pressure losses, swab and surge pressures, cuttings transport and hydraulic optimization. References are presented at the end of each section. The units and nomenclature are consistent throughout the manual. Equations are given generally in consistent S.1. units; some common expressions are also given in oilfield units. Nomenclature is explained after every equation when necessary, and a comprehensive list of the nomenclature used is given in Appendix A. Units are listed in Appendix B. In Appendix C, all the important equations are given in both S.1. and oilfield units. Appendix D contains example hydraulics calculations. A glossary is included. THEORY AND APPLICATION OF DRILLING FLUID HYDRAULICS 1 INTRODUCTION To dri 11 a we 11 safely and succes sfull y depends upon a thorough unders tandi ng of drilling hydraulics principles. Thus, drilling hydraulics is a very impor tant subject with which all logging geologists should be familiar.

Download or read book Estimation of Temperature dependent Parameters Using an Integrated Thermal and Hydraulics Simulator for Drilling Applications written by AmirHossein Fallah and published by . This book was released on 2018 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today, wells are being drilled under complex conditions with complex well geometries, under High-Pressure High-Temperature (HPHT) conditions, with risk of riser gas unloading in deepwater operations, while using Managed Pressure Drilling (MPD) techniques, etc., resulting in a clear need for comprehensive multi-phase hydraulics software to simulate these conditions. To address this need, a thermal model is developed and added to a previously developed multi-phase software package. The de-coupled thermal model is able to estimate the temperature in the drillstring and the annulus fluids, as well as the formation temperature adjacent to the well, using an advanced explicit finite volume approach integrated with a semi-implicit scheme used in the hydraulics model. The model solves the energy equation for the wellbore fluids, assuming that the gas and liquid phases are at the same temperature. Comprehensive thermal resistance networks are used to calculate the heat transfer between the annulus and drillstring fluids, the annulus fluid and the formation, and in the formation. For better accuracy, axial heat conduction in the drilling fluid and heat generation at the bit are accounted for. Results of the model are compared against the well-known Hasan and Kabir model and commercial software, showing a very good match for both steady-state and transient cases. To show the importance of accurate temperature estimations, offshore and onshore kick scenarios are simulated for different drilling fluids and kick control methods. Using a comprehensive heat transfer model, a user-friendly Graphical User Interface (GUI) and advanced numerical schemes makes this model a robust tool for estimation of the drilling fluid and the formation during complex well control applications. The developed model is able to estimate crucial parameters during complex conditions, such as the pressure and temperature profiles, increased pit gain and outflow during kicks, gas solubility and unloading at low pressures, and even temperature-dependent formation strength. The addition of the energy equation comes without loss of previous modeling capabilities of the hydraulics simulator, such as accounting for area discontinuity in the well and drillstring, non-Newtonian fluid rheology, MPD techniques, and arbitrary 3-D well trajectories

Download or read book Rheological Characterization of Complex Drilling Fluid and the Effects on Drilling Hydraulics written by Shiraz Gulraiz and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pressure management and hole cleaning are fundamental aspects of a successful drilling operation. Despite a plethora of research articles, contradictory results continue to be reported in the literature. The variables involved have been extensively researched but rheology continues to suffer from severe oversimplifications. Few studies go beyond the canonical time-independent characterization and even fewer consider the addition of drill cuttings and thermal effects. The composition of drilling fluids makes them a typical case of complex fluids such that the rheology is dependent on shear rate and flow history. Complex fluids exhibit several peculiar rheological features that are augmented in a drilling environment. The present work investigates the interplay between complex rheology and drilling hydraulics; the latter here refers to bottomhole pressure and cuttings transport. In this work, rheological algorithms are developed to characterize complex rheology. The multiphase mixture of fluid and cuttings is modeled as thixotropic viscoplastic (TVP) suspension. It is observed that high yield stress and flow rate do not guarantee efficient hole cleaning. In most cases, high yield stress deteriorates cuttings transport. A large stress overshoot improves cuttings transport, though the distinction between the static and dynamic yield stresses diminishes as particle concentration increases. Since viscosity lags shear rate changes in thixotropic flows, pressure fluctuates and swirling viscosity profiles are generated, giving rise to localized turbulence and Taylor vortices even at low velocities. Moreover, cuttings transport varies as a power-law function of particle shape, size, and flow rate. Under a geothermal gradient, high-temperature regions develop near the inner pipe as fluid moves upwards. Temperature has a diverse effect on rheology and temperature-viscosity profiles are often non-monotonic. For such fluids, the pressure profile is highly non-linear as most of the frictional losses occur near the bottomhole. Fluids with non-monotonic temperature-viscosity profiles yield better cuttings transport but at the cost of higher pressure. Modeling the time-dependent rheology of drilling fluids while studying drilling hydraulics helps in addressing several contradictions found in the literature. It is recommended that the experimental and computational efforts focused on drilling hydraulics should characterize complex rheology for a better understanding of drilling hydraulics

Download or read book A Dynamic Model of Well Hydraulics in Deepwater Riserless Drilling Operations Using Synthetic based Drilling Fluids written by Heitor Rodrigues Lima and published by . This book was released on 1998 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory and Application of Drilling Fluid Hydraulics written by Alun Whittaker and published by Springer. This book was released on 1985-01-01 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Co Simulation Approach for Hydraulic Percussion Units written by Håkan Andersson and published by Linköping University Electronic Press. This book was released on 2018-09-11 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Licentiate of Engineering thesis concerns modelling and simulation of hydraulic percussion units. These units are often found in equipment for breaking or drilling in rock and concrete, and are also often driven by oil hydraulics, in which complex fluid-structure couplings are essential for their operation. Current methodologies used today when developing hydraulic percussion units are based on decoupled analyses, which are not correctly capturing the important coupled mechanisms. Hence, an efficient method for coupled simulations is of high importance, since these mechanisms are critical for the function of these units. Therefore, a co-simulation approach between a 1D system simulation model representing the fluid system and a structural 3D FE-model is proposed. This approach is presented in detail, implemented for two well-known simulation tools and evaluated for a simple but relevant model. The Hopsan simulation tool was used for the fluid system and the FE-simulation software LS-DYNA was used for the structural mechanics simulation. The co-simulation interface was implemented using the Functional Mock-up Interface-standard. The approach was further developed to also incorporate multiple components for coupled simulations. This was considered necessary when models for the real application are to be developed. The use of two components for co-simulation was successfully evaluated for two models, one using the simple rigid body representation, and a second where linear elastic representations of the structural material were implemented. An experimental validation of the co-simulation approach applied to an existing hydraulic hammer was performed. Experiments on the hydraulic hammer were performed using an in-house test rig, and responses were registered at four different running conditions. The co-simulation model was developed using the same approach as before. The corresponding running conditions were simulated and the responses were successfully validated against the experiments. A parameter study was also performed involving two design parameters with the objective to evaluate the effects of a parameter change. This thesis consists of two parts, where Part I gives an introduction to the application, the simulation method and the implementation, while Part II consists of three papers from this project.

Download or read book Applied Drilling Circulation Systems written by Boyun Guo and published by Gulf Professional Publishing. This book was released on 2011-04-21 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Used to clean the borehole, stabilize rock, control pressures, or enhance drilling rates, drilling fluids and their circulation systems are used in all phases of a drilling operation. These systems are highly dynamic and complicated to model until now. Written by an author with over 25 years of experience, Applied Drilling Circulation Systems: Hydraulics, Calculations and Models provide users with the necessary analytical/numerical models to handle problems associated with the design and optimization of cost-effective drilling circulation systems. The only book which combines system modeling, design, and equipment, Applied Drilling Circulation Systems: Hydraulics, Calculations and Models provides a clear and rigorous exposition of traditional and non-traditional circulation systems and equipment followed by self contained chapters concerning system modelling applications. Theories are illustrated by case studies based on the author’s real life experience. The book is accompanied by a website which permits readers to construct, validate, and run models employing Newtonian fluids, Bingham Plastic fluids, Power Law fluids, and aerated fluids principles. This combination book and website arrangement will prove particularly useful to drilling and production engineers who need to plan operations including pipe-tripping, running-in casing, and cementing. In-depth coverage of both on- and offshore drilling hydraulics. Methods for optimizing both on- and offshore drilling hydraulics. Contains problems and solutions based on years of experience.

Download or read book Drilling Fluid Engineering written by and published by Bookboon. This book was released on with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation on the Effects of Ultra high Pressure and Temperature on the Rheological Properties of Oil based Drilling Fluids written by Chijioke Stanley Ibeh and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Designing a fit-for-purpose drilling fluid for high-pressure, high-temperature (HP/HT) operations is one of the greatest technological challenges facing the oil and gas industry today. Typically, a drilling fluid is subjected to increasing temperature and pressure with depth. While higher temperature decreases the drilling fluid0́9s viscosity due to thermal expansion, increased pressure increases its viscosity by compression. Under these extreme conditions, well control issues become more complicated and can easily be masked by methane and hydrogen sulfide solubility in oil-base fluids frequently used in HP/HT operations. Also current logging tools are at best not reliable since the anticipated bottom-hole temperature is often well above their operating limit. The Literature shows limited experimental data on drilling fluid properties beyond 350°F and 20,000 psig. The practice of extrapolation of fluid properties at some moderate level to extreme-HP/HT (XHP/HT) conditions is obsolete and could result in significant inaccuracies in hydraulics models. This research is focused on developing a methodology for testing drilling fluids at XHP/HT conditions using an automated viscometer. This state-of-the-art viscometer is capable of accurately measuring drilling fluids properties up to 600°F and 40,000 psig. A series of factorial experiments were performed on typical XHP/HT oil-based drilling fluids to investigate their change in rheology at these extreme conditions (200 to 600°F and 15,000 to 40,000 psig). Detailed statistical analyses involving: analysis of variance, hypothesis testing, evaluation of residuals and multiple linear regression are implemented using data from the laboratory experiments. I have developed the FluidStats program as an effective statistical tool for characterizing drilling fluids at XHP/HT conditions using factorial experiments. Results from the experiments show that different drilling fluids disintegrate at different temperatures depending on their composition (i.e. weighting agent, additives, oil/water ratio etc). The combined pressure-temperature effect on viscosity is complex. At high thresholds, the temperature effect is observed to be more dominant while the pressure effect is more pronounced at low temperatures. This research is vital because statistics show that well control incident rates for non- HP/HT wells range between 4% to 5% whereas for HP/HT wells, it is as high as 100% to 200%. It is pertinent to note that over 50% of the world0́9s proven oil and gas reserves lie below 14,000 ft subsea according to the Minerals Management Service (MMS). Thus drilling in HP/HT environment is fast becoming a common place especially in the Gulf of Mexico (GOM) where HP/HT resistant drilling fluids are increasingly being used to ensure safe and successful operations.

Download or read book Applied Hydro Aeromechanics in Oil and Gas Drilling written by Eugeniy G. Leonov and published by John Wiley & Sons. This book was released on 2011-12-14 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: An all-in-one reference combining hydrodynamic theory with drilling applications for the design, planning, and optimization of drilling operations Hydromechanical processes underlie the majority of technology operations in drilling and present a crucial concern as the pace and depth of drilling increasesin today's energy-hungry world. Applied Hydro-aeromechanics in Oil and Gas Drilling offers a unique resource for properly modeling and understanding the hydro-dynamic forces affecting a drilling site. Combining hydrodynamic theory with specific drilling applications, this coverage provides readers with a comprehensive reference for designing, planning, and optimizing drilling operations. Featuring the latest technologies and developments affecting the field, Applied Hydro-aeromechanics in Oil and Gas Drilling covers topics including: The physics of hydro-aeromechanical phenomena in drilling processes Calculation methods for understanding and designing circulation systems for the washing, blasting, and cementing of wells Problems of interaction between wells and reservoirs Problems with the fluid, gas, and liquid-gas mixture flows necessary in designing and building of wells Presenting an unmatched combination of theory, modeling issues, and concrete, illustrative examples, Applied Hydro-aeromechanics in Oil and Gas Drilling bringstogether formerly widespread technical information to offer a systematic and methodical guide. It is an essential reference for both students and researchers studying fluid mechanics, as well as engineers and other professionals working in the oil and gas industry.

Download or read book Petroleum Abstracts Literature and Patents written by and published by . This book was released on 1990 with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managed Pressure Drilling written by Wilson C Chin and published by Gulf Professional Publishing. This book was released on 2012-01-17 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: If done properly, MPD can improve economics for any well being drilled by reducing a rig's nonproductive time. Written for engineers, drilling managers, design departments, and operations personnel, Managed Pressure Drilling Modeling is based on the author's on experience and offers instruction on planning, designing and executing MPD projects. Compact and readable, the book provides a step by step methods for understanding and solve problems involving variables such as backpressure, variable fluid density, fluid rheology, circulating friction, hole geometry and drillstring diameter. All MPD variations are covered, including Constant Bottomhole Pressure, Pressurized MudCap Drilling and Dual Gradient Drilling. Case histories from actual projects are designed and analyzed using proprietary simulation software online.

Download or read book Drilling Fluid Hydraulics Simulator with Emphasis on Rheological Models written by Kolawole Babajide Ayeni and published by . This book was released on 2003 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Drilling Fluids Processing Handbook written by ASME Shale Shaker ASME Shale Shaker Committee and published by Elsevier. This book was released on 2011-03-15 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by the Shale Shaker Committee of the American Society of Mechanical Engineers, originally of the American Association of Drilling Engineers, the authors of this book are some of the most well-respected names in the world for drilling. The first edition, Shale Shakers and Drilling Fluid Systems, was only on shale shakers, a very important piece of machinery on a drilling rig that removes drill cuttings. The original book has been much expanded to include many other aspects of drilling solids control, including chapters on drilling fluids, cut-point curves, mud cleaners, and many other pieces of equipment that were not covered in the original book. Written by a team of more than 20 of the world's foremost drilling experts, from such companies as Shell, Conoco, Amoco, and BP There has never been a book that pulls together such a vast array of materials and depth of topic coverage in the area of drilling fluids Covers quickly changing technology that updates the drilling engineer on all of the latest equipment, fluids, and techniques

Download or read book A New Approach to Drilling Fluids Engineering in HPHT Environments written by Aleruchi Boniface Oriji and published by LAP Lambert Academic Publishing. This book was released on 2015-09-08 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drilling HPHT wells pose a big challenge in the oil and gas industry. Wells with a BHST and BHSP in excess of 300 deg. F and above 10,000 psi respectively are considered as HPHT wells. Conventional designs and test equipment fell short of addressing the inherent problems associated with these types of wells. A typical oil and gas field was studied and prognosed to be HPHT field at 500 deg. F BHST and above 10,000 psi BHSP. The field was investigated and a new approach to drilling fluids engineering was developed through experimental procedures, simulation studies, field application and computer modeling. Actual field data were obtained and used for qualitative and quantitative guide for the development of a software called HPHT Rheo-Analyzer. Experimental and field results indicated that the rheological properties were dependent on temperature, pressure and also on the interaction effect of HPHT. A multiple regression results from the software showed good agreement with the experimental and the field values with less than 1% deviation. The model therefore served as a proactive step for practical drilling experience and well planning for HPHT wells in the XYZ field.

Download or read book Development of a Multiphase Flow Simulator for Drilling Applications written by Sebastian Calvache Mejia and published by . This book was released on 2017 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drilling, or gas kick, simulators are becoming prevalent in industry due to their ability to replicate wellbore conditions that are not feasible in a laboratory setting. This is becoming more desirable as deeper wells are being explored. One of the biggest dangers that could happen during drilling operations is the onset of a gas kick. This occurs when a zone in the formation whose pressure is higher than that of the wellbore is breached. This allows for the undesired influx of formation fluids into the wellbore. If left uncontrolled, it could develop into a blowout. Gas kick simulators allow for testing of procedures that could be used to contain kicks at such depths. Furthermore, the use of drilling simulators could provide more insight into other phenomena. These include wellbore breathing and fracture ballooning, that cause similar kick symptoms at the surface and lead to expensive misdiagnosis, and the dissolution of gas into oil based mud, which could delay the identification of a kick. This thesis investigates the development of the initial integration of a drilling simulator into UTWELL, the wellbore simulator program developed at The University of Texas at Austin, by implementing a gas kick module. The transport equations of mass and momentum conservation were discretized using a Semi-Implicit Homogeneous Method over a one dimensional staggered grid. The multiphase phenomena were modelled using a Drift Flux approach as opposed to a mechanistic, two fluid approach. This was due to increased stability of the solution and faster computation time, despite the risk of loosing accuracy. The simulator was successful at simulating single phase flows for fluids with distinct rheology models, and with wellbores with discontinuities in the geometry. When attempting to simulate the well control of a gas kick in water based mud, the results were mixed. Attempt at simulating a ‘Floating Mud Cap’ method failed due to the simulator’s inability to perform drainage functions that allow for the raising and lowering of the mud level in the wellbore. However, the simulator was successful at capturing the behaviour of the gas kick as it entered and migrated through the wellbore, matching literature results. The simulator was compared to experimental data gathered from a test well. Three different scenarios were tested: No Drillstring, Semi-Submerged Drillstring and Drillstring at the Bottom. In all three cases, there was a good match between the experimental and simulation results for the bottomhole and choke pressures. The pit gain was severely overestimated in the 'No Drillstring' and 'Semi-Submerged Drillstring Case', however this was due to a higher influx of simulated gas having entered the wellbore during simulations. The drillstring at the Bottom’ simulation matched well with all data and with other simulators. Recommendations included full integration and testing of a compositional model to simulate oil based mud cases, implementation of automatic choke control and special flux splitting techniques in the discretization in order to better handle pressure waves caused by discontinuities.