In addition, cement evaluation logs are often run within 48 hours of pumping the cement which results in lower acoustic impedance at the time of logging. The current edition, cement sheath evaluation api 10tr, is available through api. Cement bond logging is not an approved mechanical integrity test under the us epa underground injection control uic regulations. Technology trends in cement logging tools suggest that acoustic measurements such as pulseecho and flexural measurements may be the leading techniques for cement job evaluation into the next decade. Spe back to basics bond log theory and interpretation. Issues with cement bond and cement evaluation logs case. Issued 1 september 1997 updated december 2002 standards and specifications that are dual crd c and astm or aci may be obtained from those organizations. The castv not only allows determination of zonal isolation but alsoallows evaluates the casing id and pipe thickness simultaneously. The introduction of openhole waveform sonic tool tested the logging feasibility in. Tech facts engineering handbook baker hughes, a ge company. Well construction cementing, cement quality evaluationlogs and zonal isolation for hydraulically fractured wells talib syed, p.
Fully revised and updated with improved content, the new sixth edition of the cement plant operations handbook is now available. Advanced cement integrity evaluation of an old well in the. Cement bond log interpretation confidence interval. Comprehensive coverage of the latest technologies and practices, including, troubleshooting for stuck pipe, operational decisions, and logging contracts. In this case, the logging tool is isolated from the rock formations by the casing string and the cement sheath. Abstract cement bond logs cbl andor cement evaluation logs are usually conducted to evaluate the quality of the cement bond behind a cemented casing. Cement evaluation to properly perform a cement evaluation, the objectives of the cement job must be understood, and a decision made as to how the success of the operation will be determined. Challenges with cement evaluation log into your online. Case studies in evaluation of cement with wireline logs in a deep. The cement bond log cbl, later combined with the vari able density vdl waveform, has been for many years the primary way to evaluate cement quality. Epa hydraulic fracturing workshop, march 1011, 2011 arlington, va 22202 theme 1. Halliburton cementing presentation linkedin slideshare.
Allow cement to cure for a sufficient time to develop full compressive strength. Pdf advanced cement integrity evaluation of an old well. The rbt allows the detection of poor cement conditions before perforating enabling proactive, measures to be taken. The information available on this website has been obtained by baker hughes, a ge company bhge, from sources believed to be reliable. Information, standards, products, product names, properties, application methods, procedures, etc. Casedhole logging is used to provide additional information from a well or reservoir that has already been completed. Epa hf workshop march 1011, 2011 arlington, va tsa, inc. Cement bond logs were run as early as 1958 with early sonic logs and the temperature log was used to find cement top beginning in 1933. Cement plant operations handbook for dry process plants philip a alsop, phd second edition july 1998 tradeship publications ltd 3. The measurement concept relies on an acoustic wave being transmitted along the casing and received back at the tool. Cement integrity logs cbl vdl crains petrophysical handbook.
Handbook for concrete and cement table of contents. The logs were also compared to the original 40 year old lowresolution sonic log to assess the extent of degradation, if any. Although temperature logging tools are available and have potential for well integrity evaluation their application for primary cement job. This edition of the gypsum construction handbook is a guide to construction procedures for gypsum drywall, cement board, veneer plaster and conventional plaster construction in effect in 2004. Cement plant operations handbook 5th edition 17 sample 15. The image in track 5 is an acousticimpedance map from 0 to 360 left to right with 0 representing the high side of the hole. Should she decide to change the type of display, the data can be played back on the screen at the end of logging operations before. A valuable reference dedicated solely to well logging and formation evaluation. Qualitative data can only be used to give a general overview in the interpretation. Abstract cement evaluation logs are generally used to evaluate the quality of the cement sheath behind the casing or liner before a well test or production. How to use this handbook the soil study and evaluation handbook consists of five parts.
Part ii will assist you in determining limiting factors for crop growth and production. Epa hydraulic fracturing workshop, march 1011, 2011. The cement evaluation presentation includes casing ovality and tool eccentricity in track 1. The phrase appraise the effectiveness calls for three activities. Part i will assist you in studying the site and its location along with describing the characteristics of the soil profile, including fertility. The cement bond logging data will be accessed if it is qualitative or quantitative usable for the analysis. A casedhole logging operation is executed in a portion of a well after its casing string has been run in and cemented. Cement evaluation radial bond tool baker hughes, a ge. Cement integrity logs are run to determine the quality of the cement bond to the production casing, and to evaluate cement fillup between the casing and the reservoir rock.
The use of acoustic tools in the evaluation of cement placement is an established practice. Packed with moneysaving and time saving strategies for the engineer working in the field. The effectiveness of these tools and their evaluations often are challenged, and they are not regarded as a replacement for reservoir interzonalcommunication tests performed between producing reservoirs. Filter all animation annual report brochure catalog conference call corporate document financial information glbl global investor presentation multimedia paper patents proxy statement real result technical specification sheet weatherford world well delivered. In direct implementation di programs including kentucky, epa may require cement bond logging under the regulations during the construction of class i hazardous waste injection wells. Historically, casedhole acoustic logging has been focused on cement assessment behind casing. Since the acoustic properties of the cement are not yet measured o n a routine basis, the values reported in table 163 can be used as a first approximation. The standard cbl tools that were available contaminatedoverback in 1960 show a lot of red.
Later development moved cement evaluation to the domain of a new ultrasonic tool. Lacking understanding of the objectives, and limiting evaluation data increases the risk of a poor or more expensive evaluation decision. However, neither bhge nor its authors guarantee the accuracy or completeness of any information published herein, and neither bhge nor its authors shall be responsible for any errors, omissions or damages arising from the use of this information. Cement bond log interpretation and evaluation casing.
Quantitation data is high quality data in which the actual measurements values can be used for a detailed analysis and evaluation. Advanced cement integrity evaluation of an old well in the rousse field article pdf available in energy procedia 37. Cement evaluation logging handbook 1994 edition open. In addition to the traditional 3 ft amplitude and 5 ft vdl, the rbt has a radially. Case studies in evaluation of cement with wireline logs in.
Examination of cement and casing evaluation logs, a field. The cement plant operations handbook 6th edition january 2019 this handbook has been superseded by the cement plant operations handbook 7th edition. Cementing basics cement bond logs were run as early as 1958 with early sonic logs and the temperature log was used to find cement top beginning in 1933. The wide range of logging measurements and applications is covered through eleven sections, each of them organized into four chapters. Well logging and formation evaluation toby darling. The logging companies cement evaluation package main focus, as directed by the industry, is toward the up or down cement evaluation meeting immediately after running the wells cement evaluation log to determine, with the rig waiting, if the cement job is satisfactory or unsatisfactory for zone isolation thru the critical intervals for the. Technology trends in cement job evaluation using logging. If you run the bond log before the cement achieves its maximum compressive strength, the log may show poor bonding. Modern acoustic cementevaluation bond devices are comprised of monopole. Properly run and interpreted, cementbond logs cbl provide highly reliable estimates of. Despite its potential, the cement bond log is probably one of the most abused, misused, and misunderstood logs used in the oil field today. The conventional cbl output is shown in tracks 2 and 3 as per fig.
Cement placement is a critical component of the well architecture for ensuring mechanical support of the casing, protection from fluid corrosion, isolation of permeable zones at different pressure regimes to prevent hydraulic communication, and effective plugandabandonment operations. Cement provides mechanical support for the casing and the isolation seal between the casing and the formation. The wetdry and freezethaw tests wereadopted as tentative standards by astm d559 and d560 in 1940 and advanced to standard in 1944. The logging staff scientist can follow every step of the recording on the screen of the mcm unit and thus has the option of choosing the best type of display. Two kinds of cementbondlog cbl tools are run as part of a standard cementevaluation program. Cement evaluation the basic reasons for casing a well are to provide wellbore stability, zonal isolation and control of welt fluids. Ludmila adam, in handbook of borehole acoustics and rock physics for reservoir characterization, 2018. Evaluation of the cementing on the 9 58 x 7 production. Cement mapping tools cet, pet, cmt cement evaluation cet and cement mapping cmt tools continue to use many of the features of cement bond cbl logs, but add a new feature a circumferential image representing the cement quality, or lack of it.
356 109 352 1243 59 418 789 404 27 1232 531 924 753 1003 1175 7 488 1371 435 1050 1249 646 880 1181 1440 755 1271 275 1127 578 326 143 1503 726 1229 1364 682 1022 787 744 1406 47 459 1297 144 793