What is oil well logging

A typical log is presented on folded paper of indeterminate length, but about 8.5-in. [21.5-cm] wide. It consists of a heading, well sketch, logging tool sketch, insert, main log, repeat section and tail. When the term is used in this sense, each log measurement is usually referred to as a curve. Oil well logging, also known as borehole logging, is a process where specialized instrumentation is inserted into a borehole to determine the properties of the geological formations surrounding the bore. Sometimes referred to as borehole logging, well logging is the action of creating an intricate written record of the data gathered during the process of creating a borehole.This record, known as a well log, makes it possible to get a better idea of the different types of matter that are encountered when drilling a hole into the ground in search of different minerals, oil or gas deposits, or

The measurement versus depth or time, or both, of one or more physical quantities in or around a well. The term comes from the word "log" used in the sense of a record or a note. Wireline logs are taken downhole, transmitted through a wireline to surface and recorded there. Well logging procedure is a technique of analyzing and collecting data of an oil well by using logging tools in the borehole. There are two types of well logging – Open Hole Logging and Cased-hole logging. Well log is one of the most fundamental methods for reservoir characterization, in oil and gas industry, it is an essential method for geoscientist to acquire more knowledge about the condition below the surface by using physical properties of rocks. In its most usual form, an oil well log is a record displayed on a graph with the measured physical property of the rock on one axis and depth (distance from a near-surface reference) on the other axis. More than one property may be displayed on the same graph.

Sometimes referred to as borehole logging, well logging is the action of creating an intricate written record of the data gathered during the process of creating a borehole.This record, known as a well log, makes it possible to get a better idea of the different types of matter that are encountered when drilling a hole into the ground in search of different minerals, oil or gas deposits, or

13 Dec 2013 Well logging chronicles the depths, subsurface formations and In the early 1800s, well loggers scaled the oilfield derricks and simply wrote down what types of formations encountered, speed of drilling and, of course, oil  1 Jun 2018 Production logging tool being deployed with a downhole Well Tractor Tool. a multiphase flow situation in which production logging tool responses He has over 30 years of global oil and gas experience working from  petroleum engineers with limited experience of logging operations. Experienced engineers What type of logging programme is appropriate? 3. How must the  CNPC > Products & Services > Petroleum Equipment > Well Logging Equipment both of which incorporate satellite communication, video conference, remote  1 Feb 2018 This applies to all well types licensed under The Oil and Gas Conservation. Act ( OGCA). It provides details on what well logs must be submitted 

Well logging, also known as borehole logging is the practice of making a detailed record (a well Well logging is performed in boreholes drilled for the oil and gas, groundwater, mineral and geothermal The gamma ray log is particularly useful as shale beds which often provide a relatively low permeability cap over 

Well logging in oil industry has its own meaning; log means “record against depth which brings its array of surface recorders, computers and logging drum and 

Open Hole Logging is a process of oil well logging that is performed before an oil borehole is cased or cemented. Logs meant for Open Hole Logging are usually run down the wellbore in the initial phase when the oil well has been drilled or is being drilled.

We can produce highly detailed and accurate logs of underground lithology. Our technology is very affordable and is often used as a double check before drilling. Well Logging Tools and Techniques: Well Logging, Mud Logging & Drill Stem Testing (Schlumberger Drilling Course CD):  Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole. The log may be based either on visual inspection of samples brought to the surface ( geological logs) or on physical measurements made by instruments lowered into the hole ( geophysical logs). Well Logging is the practice of creating a detailed record (known as a well log) of the geological formation during the drilling of a borehole. A well log is prepared by either taking samples through visual inspections or with the aid of measuring instruments lowered into the borehole. 2.2.4 Logging. Well logging is a method used for recording rock and fluid properties to find gas- and oil-containing zones in subterranean formations. Drilling of an exploratory or developing well is the first contact that a geologist has with the actual contents of the subsurface geology. Similar to a ship's log that tracks the events aboard the vessel, a well log tracks the events of drilling, but instead of being plotted in a timeline, a well log is recorded by depth drilled. Well logging is actually used not just for water wells, but also for oil wells. Researchers also use well logging as a means to perform geothermal, geotechnical, and environmental studies. Well logs tell researchers how deep certain formations are and what types of formations are present underground.

Induction Logs are used in wells that do not use mud or water, but oil-based drilling fluids or air, which are nonconductive and, therefore, cannot use electric logs 

Oil well logging, also known as borehole logging, is a process where specialized instrumentation is inserted into a borehole to determine the properties of the geological formations surrounding the bore. Sometimes referred to as borehole logging, well logging is the action of creating an intricate written record of the data gathered during the process of creating a borehole.This record, known as a well log, makes it possible to get a better idea of the different types of matter that are encountered when drilling a hole into the ground in search of different minerals, oil or gas deposits, or Well Logs. There are many different types of well logs. Some of the logs that are used to interpret the rocks in a well are discussed below. Other types of logs measure temperatures, the flow rate of oil and gas that is being produced in the well, and the quality of cement used to bond production pipe (which is actually called casing) to the surrounding rock. Open Hole Logging is a process of oil well logging that is performed before an oil borehole is cased or cemented. Logs meant for Open Hole Logging are usually run down the wellbore in the initial phase when the oil well has been drilled or is being drilled. To make it work, you need to have Gamma Ray Log, Resistivity Logs, Density and Neutron logs plotted on the same log plot respectively. Then, by looking at how the curve deflects relative to each other, you can tell the difference between oil, gas and water. Isn't that neat? But first, you need to understand the reasons we run any well logs. Information pertinent to both the logging run and the well is recorded on the header. Logs recorded digitally. 6. Title Services Associated With Data on Log Basic Information Company, Well Name Location Works with oil based mud, or air Log Presentation and Scales ID, IM, LL8 measure resistivity at different distances form the borehole. ID Over time, many different types of logs have been developed to collect data about wellbores and subsurface formations. This article provides an overview of how various log types correspond to reservoir characteristics.

Well Logging Tools and Techniques: Well Logging, Mud Logging & Drill Stem Testing (Schlumberger Drilling Course CD):  Well logging, also known as borehole logging is the practice of making a detailed record (a well log) of the geologic formations penetrated by a borehole. The log may be based either on visual inspection of samples brought to the surface ( geological logs) or on physical measurements made by instruments lowered into the hole ( geophysical logs). Well Logging is the practice of creating a detailed record (known as a well log) of the geological formation during the drilling of a borehole. A well log is prepared by either taking samples through visual inspections or with the aid of measuring instruments lowered into the borehole. 2.2.4 Logging. Well logging is a method used for recording rock and fluid properties to find gas- and oil-containing zones in subterranean formations. Drilling of an exploratory or developing well is the first contact that a geologist has with the actual contents of the subsurface geology. Similar to a ship's log that tracks the events aboard the vessel, a well log tracks the events of drilling, but instead of being plotted in a timeline, a well log is recorded by depth drilled. Well logging is actually used not just for water wells, but also for oil wells. Researchers also use well logging as a means to perform geothermal, geotechnical, and environmental studies. Well logs tell researchers how deep certain formations are and what types of formations are present underground.