Various types of surface pressure tests usually for gas wells. Pressure transient analysis oil and gas well testing. Geologists, drilling engineers, production engineers and reservoir engineers with 15 years experience. Processing and analysis of transient pressure measurements from. Well test analysis for wells produced at a constant pressure. The success of the result obtained from well testing analysis is a function of the range and the quality of pressure and rate data available and also the approach used for the analysis. For horizontal wells, the earlytime transient data are the most sensitive to the vertical permeability and skin if the wellbore storage effect is minimized. Pdf well testing and interpretation for horizontal wells. Pressure transient well test analysis procedures are based on classical mathematical relationships between flow rate, pressure and. Several types of transient well testing in norne field are presented in this.
Analysis and interpretation of the pressure transient data measured by well testing may be instrumental in providing the critical information about the skin factors s and formation capacity permeabilitythickness product, kh required for formation damage quantification. Spe member price usd 105 pressure transient testing presents the fundamentals of pressuretransient test analysis and design in clear, simple language and explains the theoretical bases of commercial welltestanalysis software. Understand the behavior of well and reservoir response patterns observed in well tests, what. Unconventional reservoir production rate transient analysis. The dynamic reservoir properties can be measured using a well test. Production test at an increasing production rate well 1 relative rate 1 drainage boundary pressure well 2 relative rate 2 bottomhole pressure p. The faster the rise time of the load current transient is, the more critical inductance becomes, both in the output capacitor as well as the pc board traces connecting it to the load. Traditional pressuretransient analysis pta, also called buildup testing or well testing, relies on the use of downholepressure measurements from retrievable or permanent gauges in combination with a. Experience how to simulate pressure transient test behavior and how to design well tests 3. The two basic categories of well tests are transient and stabilized tests.
Pressure transient analysis is mainly used for reservoir characterization in exploration and appraisal stage. Welltesting, insitu fluid sampling, and stress determination methods for unconventional reservoirs. Pressure measurements recorded near the productive interval form the basis for transient welltest analysis, and are primarily used for determining reservoirrock properties and producingformation limits. Transient tests can be used throughout the life of the. On the other hand, transient well testing is one of the practical and indirect techniques to characterize wells. Experience how to process, quality check, diagnose, and analyze pressure transient data 4. Basic concepts in well testing for reservoir description. Table of contents table of contents 1 introduction. Very, very common test so learn about them used to determine formation permeability boundary conditions.
Well testing and pressure transient analysis is used from oil and gas exploration to production. Determination of insitu reservoir absolute permeability. During a well test, a transient pressure response is created. These include buildup tests and drawdown tests in production wells and falloff tests in injection wells. Transient well testing monograph series by medhat m. Practicing petroleum engineers need a single uptodate reference for transient testing of oil, gas, and water wells. When the load current reaches the new value il2, the esl voltage spike will be over. Pdf fieldwide determination of directional permeabilities. Description of a well test dd i bu p p pt p pt p t. The faster the rise time of the load current transient is, the more critical inductance becomes, both in the output capacitor as well as the pc board traces connecting it. Injection well transient testing and analysis are simple as long as the mobility ratio between the injected and insitu fluids is about unity and the radius of investigation is not beyond the water injected fluid bank. Everyday low prices and free delivery on eligible orders. This paper shows applications of various welltesting methods during the exploration.
Pressuretransient analysis of bottomhole pressure and. Minimize well testing cost and reduce flaring some special efforts in well test design and operations can be pursued to minimize the well testing cost and reduce flaring. The results provided valuable information to optimize production and evaluate reservoir potential. Bratvold and horne 1990 as well as abbaszadeh and kamal 1989 generated an approximation to the falloff pressure response by analogy. To understand this important discipline, well testing experts have developed definitions ranging from average reservoir pressure to dst and well interference testing. Training course and seminar catalog society of petroleum. Pressure transient formation and well testing, volume 57. Determination of in situ reservoir absolute permeability under multiphase flow conditions using transient well testing. Well test and pta for reservoir characterization of key properties. Use of transient testing in reservoir management onepetro. Pressure transient testing syllabus and administrative. Pdf pressuretransient testing of waterinjection wells.
Med kamal is a senior research consultant with chevron energy technology. Ameli iran university of science and technology 122517 1. Well tests in which pressure is recorded as a function of time and interpreted using various analysis methods. It is one of the most important in a spectrum of diagnostic tools used by petroleum engineers to characterize hydrocarbon assets and predict their future performance. Rate transient analysis rta, also know as advanced decline analysis is a relatively recent development that uses well flowing pressures to characterize well and reservoir properties and estimate inplace volumes. Pte 517 testing of wells and aquifers spring semester 2017.
Pressure transient testing and productivity analysis for horizontal wells. Pressure transient analysis using generated well test data. To be able to interpret the results of well test analysis 4. A comprehensive system of wizards is designed to guide the user through the appropriate steps to ensure data is entered properly and that a reliable analysis is obtained. Determination of insitu reservoir absolute permeability under multiphaseflow conditions using transient well testing mm kamal, s morsy, f suleen, y pan, a dastan, mr stuart, e mire. Pressure transient well test is sometimes also called as pressure transient analysis. Ground water ruletesting your water to see if it has e. During a well test, a transient pressure response is created by a temporary change in production rate. C distance between the test well and offset well s completed in the same interval or involved in an interference test c simple illustration of locations of the injection and offset wells 8. Basic concepts in well testing for reservoir description patrick corbett hamidreza hamdi. The primary purpose of performing a pressure transient well test is to determine the key performance indicators of an oil or gas well i,e. Transient pressure an overview sciencedirect topics. A method to use transient testing results in reservoir simulation. Pressuretransient analysis of bottomhole pressure and rate.
This technique has been made available by the introduction of scada supervisory. Heinemann professor for reservoir engineering leoben, october 2005 actualized by. During an exploration well test, hydrocarbon is produced for the first time and flared via a temporary facilities platform rig at sea to evaluate the potential and. Additional exercises for classroom or individual practice are provided. Nitratenitrite ruletesting your water for inorganic chemicals normally found in fertilizer, sewage and animal waste. On the other hand, transient well testing is one of the. He is the lead author and editor of spe monograph 23 transient well testing, and has published more than 35 technical papers in various spe journals.
Pdf on oct 1, 2005, medhat kamal and others published numerical well testing. Transient well testing provides indirect determination of reservoir and well parameters. During an exploration well test, hydrocarbon is produced for the first time and flared via a temporary facilities platform rig at sea to evaluate the potential and reserves of an oil and gas field. Transient well testing has been written to fill that gap. This reference presents a comprehensive description of flow through porous media and solutions to pressure diffusion problems in homogenous, layered, and heterogeneous reservoirs. Purchase pressure transient formation and well testing, volume 57 1st edition. Ameli iran university of science and technology 1 transient well testing, kamal, chap. Textbook 1 pressure transient testing john lee, john b. Several well testing applications are discussed with corresponding analyses pertaining to unconventional gas and gas condensate wells in addition to some case studies for tight oil formations. If the time periods are short, the pressure change remains transient. In addition, in each type of test carried out, there are various information on the reservoir properties that can be obtained shown in table 1.
Pte 517 testing of wells and aquifers spring semester 2017 dr. Pressure drop in a production well inside a finite reservoir. This data is also used to calculate bottomhole pressures 3. Pressure transient formation and well testing fikri kuchuk.
Pressuretransient welltest analysis procedures are based on classical mathematical relationships between flow rate, pressure and time, which are directly analogous to the theory. Determination of insitu reservoir absolute permeability under. The use of transient well testing for determining reservoir parameters and productivity of horizontal wells has become common because of the upsurge in horizontal drilling. A method to use transient testing results in reservoir. An honorary member of spe, kamal has over 40 years of industry experience in well testing, reservoir description, and production and reservoir engineering. On the other hand, transient well testing is one of the practical.
Transient testing is facing a challenge to have the information it provides incorporated in numerical simulators used to predict reservoir. Experience how well test models are derived and computed 2. Testanalysis techniques are illustrated with complete and clearly written examples. Russell spe monograph 1 reference transient well testing monograph, medhat kamal spe monograph 23.
C distance between the test well and offset wells completed in the same interval or involved in an interference test c simple illustration of locations of the injection and offset wells 8. During a well test, a transient pressure response is created by a temporary change. A recently developed method kamal and pan, 2010 to determine the insitu absolute permeability under twophase flowing conditions extended the applicability of transient well testing and has been adopted in commercial software. Complexities in the analysis of pressure transient response in faulted naturally fractured reservoirs. Presented at the spe annual technical conference and exhibition, houston, 28. Pressure transient formation and well testing fikri kuchuk, florian hollaender and mustafa onur eds.
Unconventional petroleum engineering for nonengineers. Figure 141 shows types of tests, limitations, and their uses. Also called well test interpretation or well test analysis. Welltest horizontal well, student presentation ppt. Uic pressure falloff testing guideline third revision. Flaring less volume and for a less amount of time is not only good for safety and environmental reasons, but also cost effective. Furthermore, for every test conducted, there is an objective to be arrived but there are challenges of improper design of the test to meet objectives and moreso, the test duration too short to capture the transient phase where important parameters are. In this paper, the problems encountered in analysis of pdg transient pressure are investigated. Sample location at the entry point to the distribution system after treatment. A gap in the petroleum engineers library for a comprehensive book covering the state of the art in welltest analysis has existed for some time now. To understand the fundamental principles of well testing 2. Buy transient well testing monograph series by kamal, medhat m. Numerical well testing synthetic studies are performed to demonstrate these procedures.
759 1 527 1103 1596 1112 694 1596 964 1165 314 258 895 317 84 40 617 1356 921 1546 1023 447 730 1259 148 264 962 1065 1000 967 115 973