Fundamentals of well testing operations next training. The well test which we will use in this program is the. Introductory well testing 9 preface 1 preface while there are many excellent and important books on the subject of well testing, few provide an introduction to the topic at the very basic level. Psacsait well testing training program introduction. Static one time measurement last the duration of a well test continuous e. Oil well testing handbook is a valuable addition to any reservoir engineers library, containing the basics of well testing methods as well as all of the latest developments in the field. An operation carried out on an oil or gas well to extend its. Define, give the units for, and specify typical sources for each of the following variables. The pressure changes in the observation well are very small, but can still be recorded by a differential manometer.
While there are many excellent and important books on the subject of well testing, few provide an introduction to the topic at the very basic level. Not only are evergreen subjects, such as layered reservoirs, naturally fractured reservoirs, and wellbore effects, covered in depth, but newer developments, such as well testing for horizontal wells, are. Very, very common test so learn about them used to determine formation permeability boundary conditions. Introduction to well testing loglog derivative pressure maintenance noflow boundary mode led. Basic concepts in well testing for reservoir description patrick corbett hamidreza hamdi. It is anticipated that the course will be 50% classroom based and 50% practical on the various training pads and workshops at elc. Not only are evergreen subjects, such as layered reservoirs, naturally fractured reservoirs, and wellbore effects, covered in depth, but newer developments. The information you provided does not match our records. Introduction to well testing introduction to well testing instructional objectives 1. The dynamic reservoir properties can be measured using a well test. Well test in most well tests, a limited amount of fluid is allowed to flow from the formation being tested.
Well test objectives the objectives of a well test usually fall into three major categories. The course includes an introduction to well testing equipment and. The reader is expected to understand basic concepts of flow in porous media. This is the superposition principle van everdingen and hurst, 1949. The course includes an introduction to well testing equipment and the instrumentation required to control, monitor, measure and sample reservoir fluids produced during a typical well test. Well test interpretation depends on mathematical models. Aberdeen wednesday 6th april 2011 1 introduction 2 description of a well test flow rate. For well testing it is the pressure and the production rate equiva lently, injection rate that are. Static level static level is the level of water in a well when no water is being taken from the well by pumps it is usually expressed as the distance in feet or meters from the ground surface to the water level. Most well tests consist of changing the rate, and observing the change in pressure caused by this change in rate. To understand this important discipline, well testing experts have developed definitions ranging from average reservoir pressure to dst and well interference testing. Introduction well hydraulics is a crucial topic in hydrology, since wells are a hydrologists primary means of studying the subsurface lots of complicated math and analysis, the bottom line is. Well testing requires the right technology, planning and implementation in order to gather information about a particular well.
Basic concepts in well testing for reservoir description aberdeen. The dst or drill stem test used in both oil and gas wells, in cased or uncased wells. An introduction to well drawdown several key terms associated with well drawdown are listed below. Pdf loglog derivative radial flow introduction to well. Constructing and maintaining a well is a team effort involving many people with different skills every individual is important. Introduction to well testing well testing evaluation. Successful production testing of exploration wells requires the choice of appropriate test string design, equipment and facilities, and strict adherence to safety measures. Loglog derivative radial flow introduction to well testing introduction to well testing introduction to well testing. Introduction to pressure transient analysis free download as powerpoint presentation. Geologists, drilling engineers, production engineers and reservoir engineers with 15 years experience. It is possible to add several pressure responses, and therefore to describe the well behavior after any rate change. Halliburton provides surface well testing services and products including planning, specialized equipment, and monitoring and measurement of all factors relating to the production of oil, gas, and water at a well site. An introduction to well intervention spe aberdeen monthly evening meeting jim wright.
Petropedia explains well testing well testing determines fluid properties, reservoir pressure, areal extent, flow rates, vertical layering, drawdown pressure, permeability, formation damage, productivity index and much. The course includes an introduction to well testing equipment and the instrumentation required to control, monitor, measure and sample reservoir fluids produced. People need clean water and sanitation to maintain their health and dignity. Drinking water quality testing section 1 introduction 1 1 introduction to drinking water quality testing having safe drinking water and basic sanitation is a human need and right for every man, woman and child. The well testing training program was initiated by the well testing committee of the petroleum services association of canada psac. Principle of well testing azmi mohdarshad department of petroleum engineering well test interpretation skm4323. To understand the fundamental principles of well testing 2. Introduction to well testing 2 upon completion of this section, the student should be able to.
It gives information on the types and properties of fluids in the formation, indicates the presence of hydrocarbons, and provides information on the pressures of the fluids within the formation. Pdf well testing and interpretation for horizontal wells. Fundamentals of well testing operations elc the course will be held at schlumbergers european learning center elc training facility in melun, france. Well test data is fundamental to the understanding and effective management of oil and gas wells. The introduction to well test interpretation will be kept in a simple form, avoiding complicated mathematical analysis where possible.
An introduction to well integrity introductory material for drilling people based on norsok d010 and olf 117 objective is to introduce well integrity early and establish as a basis for all work the compendium is a prerequisite for the standards, separate training in the standards must be done later. The operation of any well, lease or unit shall be such as to keep each well location and unit installation free of rubbish, debris, dead grass, brush, weeds, and other flammable material. Introductory well testing by tom aage jelmert download link. The priorities of the wells team are to maintain well integrity, avoid hurting anyone and deliver the well on time and in budget. An introduction to psychometric tests you are most likely to encounter psychometric testing as part of the recruitment or.
A well test is a set of procedures, performed under specified conditions, to measure the factors affecting the capability of a well for production or injection of fluids and any possible damage. In fact, the production test can be performed either through a temporary completion string made up of dst down hole tools or through the final permanent completion string. The formation is isolated behind cemented casing and perforated at the formation depth or, in openhole, the formation is straddled by a pair of packers that isolate the formation. During a well test, a transient pressure response is created by. To perform a well test successfully one must be able to measure the time, the rate, the pressure, and control the rate. Identify well test data affected by various wellbore and nearwellbore phenomena. Introduction to hypothesis testing sage publications. Introduction to well testing loglogderivative pressure maintenance noflow boundarymode led re servo ir areac4.
The diffusivity equation used to generate the well test analysis solutions is linear. Wireline tractor introduction mechanical services introduction. Pressure response for an interference test it is possible to produce periodically from the active well, as shown in figure, i. Introduction to geophysical well logging and flow testing cornel ofwona geothermal development company ltd. The decision to case and cement a well for production or plug and abandon it as a dry hole relies heavily on formation evaluation fe using openhole. Pdf basic concepts in well testing for reservoir description. Mechanical reasoning designed to assess your knowledge of physical and mechanical principles. An operation carried out on an oil or gas well to extend its producing life by. Introduction to well testing by ned spe student chapter issuu. Various types of surface pressure tests usually for gas wells.
In addition, all waste oil shall be disposed of in a manner which will not create a fire hazard 6nycrr part 556. Introduction well hydraulics is a crucial topic in hydrology, since wells are a hydrologists primary means of studying the subsurface lots of complicated math and analysis, the bottom line is that ow tofrom a well in an extensive aquifer is radial, and can be approximated by analytic solutions to ow equation in radial coordinates. Well test analysis for wells produced at a constant pressure. Well test objectives exploration well on initial well, confirm hc existence, predict a first production forecast dst. Basic concepts in well testing for reservoir description. Well testing determines fluid properties, reservoir pressure, areal extent, flow rates, vertical layering, drawdown pressure, permeability, formation damage, productivity index and much more. Additional pressure drop produced by turbulent flow. Well testing flow tests well testing is possible because pressure and flow rate can easily be measured in a well and an analysis of the measurement history reflects reservoir parameters. Committee members saw a need for an industry standard training course that. To be able to interpret the results of well test analysis 4. Natural fractured reservoir engineering phdg textbooks in preparation, intended to be issued during 2015. This chapter discusses a selection of transient well tests for oil wells and gas wells and illustrates how transient well test information is used. It will consist of some theoretical classroom sessions conducted with experienced professional providing presentations of well testing equipment, procedures and operations.
Horizontal well as vertical well with negative skin, in consequence of surface contact area increasing. The drake well was located in the middle of quiet farm country in northwestern pennsylvania, and sparked the international search for an industrial use for petroleum. Introduction to well testing pdf free download epdf. Well testing and reporting requirements guide bc oil and gas. You can expect to find all of the following types of question in a typical mechanical aptitude test. Analyze well tests in hydraulically fractured wells, horizontal wells, and naturally fractured reservoirs. A pumping test is a field experiment in which a well is pumped at a controlled rate and waterlevel response is measured in one or more surrounding observation wells and optionally in the pumped well control well itself. Test production from the well will most likely need to be routed into the test separator, and then the oil will be sent to a stock tank so it can be measured. The driver behind every well completion strategy, whether for a complex or basic well, is to recover, at a reasonable cost, as large a percentage of the original oil in place ooip as possible.
Results show that of the two properties, permeability had the most sensitized effect on the rate of oil well production. Drake well museum collection, titusville, pa these wells were shallow by modern standards, often less than 50 meters. Well testing and interpretation for horizontal wells article pdf available in journal of petroleum technology 471. Instead, a portable test unit consisting of a separator, meters, and storage tanks are brought to the well site for the test. Hypothesis testing or significance testing is a method for testing a claim or hypothesis about a parameter in a population, using data measured in a sample. Many designs of well test strings are possible depending on the requirements of the test and the nature of the well and the type of flow test to be conducted. The length of the test, usually numbered in hours, is limited by available storage. In this method, we test some hypothesis by determining the likelihood that a sample statistic could have been selected, if the hypothesis regarding the population parameter were true. Introductory well testing 4 contents contents 1 preface9 2 introduction 10 3 productivity of wells 11 3. Iskander diyashev is a director and a cofounder of petroleum and energy technology advisors, inc.
Introduction to well testing by ned spe student chapter. This data is also used to calculate bottomhole pressures 3. During a well test, a transient pressure response is created by a temporary. Hopefully, this book will give the reader a useful introduction to a. It is rather easy to measure the length and diameter of a pipe and compute its. The log may be either geological logs or geophysical logs.1041 623 1506 1302 124 966 228 189 1274 75 1296 8 1125 886 1125 55 772 912 638 247 2 1309 113 208 213 450 1086 1560 790 1346 455 1561 689 1101 511 752 1078 729 1444 655 416 42