Cement mixwater gradient from the toc to the outer casing shoe typically 8. The design of a casing program involves the selection of setting depths, casing sizes and grades of steel that will allow for the safe drilling, and completion of a well to the desired producing configuration. Design, testing, and mechanical behavior of additively. The suctionhead casting is of special design to facilitate the removal of internal parts without dismantling the pumps. Pdf casing design is an important task in oil and gas well design. It is the process of turning ideas into material things. Drive pipe or structural pile gulf coast and offshore only 150300 below mudline. Casing design user manual revision 2 drillingsoftware. Developments in petroleum science, 42 casing design theory and practice this. This chapter discusses the principles of casing design. The collapse loading for intermediate pipe is supplied by the mud weight that the casing. A small diameter surface casing is set inside the conductor casing and extends beneath the deepest freshwater zone to protect it from contamination. Full mud gradient or deteriorated mud from the surface to the toc. However, the case of p110 casing is an exception where yield is defined as the tensile stress required to produce a total elongation of 0.
Several different versions of the competition exist, ranging from gas powered ice cars to hybrid to full electric cars. If the pressure declines more than 10 percent in 30 minutes or if there is another indication of a leak, the casing shall be recemented, repaired, or an additional casing string run and the casing tested again. Contributions to the technology in casing design have come from fundamental research and field tests, which have made casing safe and. Reliability design optimization of casing cap by sample test and fea. Through a combination of lecture and extensive handson examples, the fundamentals of casing design are. Richard carden, robert bob westermark the twoweek course is designed for engineers and field personnel involved in the planning and implementation of drilling programs. In this report author have tried to capture the best of casing design practices and available. Siwawong buthgate, anakapon saenthon and somyot kaitwanidvilai. A short conductor casing at the top of the well keeps soil, sand and gravel from sloughing into the borehole and filling in the well. The time, conditions of testing, and results of all. Purchase casing design theory and practice, volume 42 1st edition. Casing2 does not have an automatic check of this value, and the engineer should make. Burst design assume no backup fluid on the outside of the casing.
Design is based on the maximum mud weight at the casing depth 53. Leads to a logical partitioning of the inputoutput domain into interestingsubsets analysis of the observable blackbox behaviour. Chilingarian, rahman casing design by ned spe student. Welded design theory and practice idx welded design is often considered as an area in which theres lots of practice but little theory. Casing design user manual page 3 1 well data before proceeding with the casing design, the well profile must be established. Figure 23 the four curves moving from right to left represent overburden stress, fracture gradients in the shale and sands, and pore pressure in the macondo well. It is the responsibility of the end user to ensure that the material will perform. Casing design theory and practice, volume 42 1st edition. This research proposes and validates a design theory for digital platforms that support online communities dpsoc.
The test article used for this study was designed to resemble a casing. This course will focus on casing design, both from an engineering and an operation perspective. Casing design, theory and practice pdf free download. Depth and diameter values on the yaxis correspond to the final well bore architecture shown in figure 22. Working stress design wsd loads are evaluated throughout the entire length of the casing from the well head to the casing shoe. Improved burst model for casing and tubing design ntnu open. Based on figure 1, this simple design procedure is clearly conservative, especially given that the experimental liner pipes were inserted into the steel test casing after cure. Theory and practice of industrial design by angela dumas.
Welded design tends to be overlooked in engineering courses and many engineering students and engineers find materials and metallurgy complicated subjects. No part ol tns book may be reproduced il 8frj fonn, by mimeograph or any other. In casing design, the top most joint is considered weakest in tension. Introduction and api standards of casing choosing the correct size, type, and amount of casing that is used in well construction is of utmost importance to the success of. Tensile forces in casing are due to combined buoyant weight, shock load and pressure test. Design concepts will be covered for a wide range of straightforward, as well as hostile environments. Field or test data is collected for each input variable, and the pdf type determined by plotting the raw frequency distributions onto probability scales. Drilling engineering casing design objectives understand primary functions of casing recognize the various types of casing strings used. True vertical depth tvd is now fully linked to vertical well geometry or directional well geometry. Welded design theory and practice john hicks cambridge england. A pressure increase of greater than 5% of the initial test pressure is not acceptable and may indicate the well has not reached thermal equilibrium.
The statements made during the workshop do not represent the views or opinions of epa. The truth about your mortgage secrets the banks dont want you to know duration. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Directive 010 minimum casing design requirements aer.
Design and analysis of a battery for a formula electric car. The external pressure profile used for the standard burst load cases. Pore pressure profile from the outer casing shoe to the base of the production casing. Drainage design theory and practice pdf free download. The disturbance is described in terms of a series of 2 to 5 khz high voltage spikes, with 15 ms burst lengths at 300 ms intervals. Casing design the following topics will be discussed functions of casing casing types casing specifications casing design bending effects buoyancy effects shock loads functions of casing to keep the hole open and to provide a support for weak, or fractured formations. Leads to a flowgraphlike model, which enables application of techniques from the whitebox world on the blackbox model. Theory and practice is a very useful book for all drilling engineers, especially the ones who are involved in well planning and design. Developments in petroleum science, 42 casing design theory and practice this book is dedicated to his majesty king fahd bin abdul aziz for his outstanding contributions to the international petroleum industo and for raising the standard of living of his subjects developments in petroleum science. The presented industry practice is based on old theories and assumptions. Xie 2006 proposed a casing strain design limit of 1. Casing2 performs the analysis as a matter of course for the pipe, based on burst loading and, looking at the inside diameter, id stress. We focused on validating the design methodology and understanding the resulting mechanical behavior and therefore sacrificed some part complexity for features that ease experimental measurement. In conclusion, rahman and chilingarians casing design.
This abstract presents information to consider in the design of a safe and effective production. Well design introduction and api standards of casing. The yield strength, for these purposes, is defined as the tensile stress required to produce a total elongation of 0. Fundamentals of casing design petroleum engineering and development studies.
The equivalent mud weight emw, expressed in pounds per gallon ppg, must be higher than the pore pressure to avoid flow. The above procedures shall be repeated until a satisfactory test is obtained. Casing design and cementing training harness energy. Contributions to the technology in casing design have come from fundamental research and field tests, which have made casing safe and economical. Threedimensional anisotropic elasticity theory is employed to estimate the stresses in filament wound composite pipe under. Fundamentals of casing design petroleum engineering and. A tentative pipe selection is made to satisfy the burst design line see fig. To isolate porous media with different fluidpressure regimes. Tubing string design while many aspects ofcasing and tubing string design are subject to company prejerences, basic concepts and specific options are presented here. Course aims this course will enable students to acquire fundamental knowledge of casing design and cementing operations and to apply the theory to the design, evaluation and optimization of casing program and. On completion of this course, successful participants will be able to select casing points, identify tubular requirements and loads, and design and specify the required casing string. Calibration of casingtubing design criteria by use of structural reliability techniques. Drawing upon prior literature on is design theory, online communities, and platforms.
Gas well testingtheory and practice 3rd edition, 1975. Three major approaches analysisoftheinputoutput domain oftheprogram. Conclusions based on laboratory tests of tubing and casing connections. When deciding on a pressure test value, the resulting force must not be allowed to. The claims made by participants have not been verified or endorsed by epa. Exceptions are where a standard is an example of basic. The word design can be used with legitimacy in many activities, the design of a sales or financial plan, the design of a new organisation, or the. The harness casing design and cementing course is a four day intensive course designed by harness petroleum engineers following an extensive and rigorous industry consultation program. Due to the plastic loading conditions and nonlinear material response, fea. Click on document casing design theory and practice. It addresses ways in which digital platforms can effectively support social interactions in online communities.
Theory and practice understanding engineering design. A pressure loss of equal to or less than 5% of the initial test pressure is a satisfactory test. Evans and carter 1962 carter and evans 1964 presented the lab method to test shearhydraulic bond of cement to formation or casing. Only the grades and weights shown are available n80, all weights. Collapse design assume that the casing is empty on the inside, that is, no pressure inside the casing and no buoyancy effect. Casing design has followed an evolutionary trend and most improvements have been made due to the advancement of technology. Emergence of delamination fractures around the casing. Reliability design optimization of casing cap by sample. Casing and tubing design for burst are performed by requiring a safety margin. Casing design theory and practice 1st edition isbn. Pdf relevant information on oil and gas casing design. Proceedings of the international multiconference of engineers and computer scientists 2017 vol ii, imecs 2017, march 15 17, 2017, hong kong. The main casing is cast iron of a tensile strength of 30,000 pounds, annular in form, and fitted with suitable supports to attach to base. Postgraduate course outline ptrl6027 casing design.
Derogation is the effect of pumping a well on the seasonal flow from springs, the. Minimum casing design requirements december 2009 5 corrosionresistant alloys cras are specialty materials designed for use in corrosive environments. Casing design casing borehole strength of materials. This course builds a firm foundation in the principles and practices of designing, planning and conducting successful casing and cement jobs. Fundamentals of casing design petroleum engineering and development studies rabia, h.
Understand the procedures used in the design of casing strings. Design is based on the weight of the entire casing string. Formula sae is an international, intercollegiate design competition focused around the design and fabrication of a smallscale formula style race car. Welded design theory and practice pre welded design is often considered as an area in which theres lots of practice but little theory. The burst design line is the product of the resultant and a design factor. I n the following sections the current, practices used in designing casing for highly. Theory and practice of industrial design by angela dumas abstract design must be understood as a word that describes both a process and an outcome.
Intermediate casing drilling engineering netwas group oil. Calibration of casingtubing design criteria by use of. This resulted in much larger annular gaps up to 5% and hence less radial restraint than would occur in the field where such liners are truly. The iec 644 standard specifies the eftsensitivity test for electrical components. Chapter 3 principles of casing design sciencedirect.
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