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a collection of Oil Well Drilling Articles.
Perforating Is probably the most important of all completion functions in cased holes. Adequate communication between the wellbore and all desired zones, as well as isolation between zones, is essential to evaluate and to optimize production and recovery from each zone. The objective of perforating a well is to establish communication between the wellbore and […]
Questions and Answers about Oil Well Kick Handling Methods 1) What should the driller do at a drilling break? a) Circulate bottoms up. b) Flow check. c) Reduce weight on bit. d) Increase pump speed. Answer: b 2) A kicking well has been shut in. The drill pipe pressure is ‘0’ because there is a non-return […]
Kick While Tripping a collection of Questions and Answers about Oil Well Kicks: 1) The driller is tripping pipe out of a 12 ¼” diameter hole. 25×92 ft. stand of 5” pipe have already been pulled. There are 85 more stands to pull. The calculated metal displacement of the 9 ½” collars is 0.08 bbls/ft. […]
Normal and abnormal formation pressure 1) What is primary well control? a) The slow Circulating Rate Pressure used in the kill process. b) The used of Mud hydrostatic to balance fluid pressures in the formation. c) The use of Blow Out Preventers to close in a well that is flowing. d) The use of Pit […]
Schlumberger Drilling Course the biggest source ever about oil well drilling, from the biggest company in the oil industry fields. it helps you to understand the drilling process fro the beginning, in other words; it is an “A to Z drilling course” , With highly interactive show with visual and vocal effects illustrating drilling and other […]
like any process in the oil industry, oil well drilling has its own problems, and each problem has its own causes and remedy, you have to well-understand the drilling process to deal with drilling problems. we can summarize the drilling problems as follows: Oil Well Drilling Problems : – Stuck pipe – Lost […]
Functions of cement – Restriction of fluid movement between permeable zones – Provision of mechanical support of the casing string – Protection of casing from corrosion – Support of the well-bore walls to prevent collapse of formations The manufacture and composition of cement – Raw material from calcareous and argillaceous rocks (limestone, clay, shale […]
Porosity Porosity is the fraction of the total volume of the rock that is pore (non rock) space or void and not made of solid pieces of the formation. It will be filled with a gas, water or hydrocarbon or two or more at the same time. Porosity will range from a high […]
Drilling Muds A water-base drilling fluid is one that has water as its continuous or liquid phase. The types of drilling fluids are briefly described in the following lines. Freshwater muds are generally lightly treated or untreated muds having a liquid phase of water, containing small concentrations of salt, and having a pH […]
Types of Casing Based on the primary function of the casing string, there are five types of casing to be distinguished. Stove or Surface Casing The stovepipe is usually driven to sufficient depth (15–60 ft) to protect loose surface formation and to enable circulation of the drilling fluid. This pipe is sometimes cemented […]
Each drilling fluid vendor provides a wide array of basic and specialty chemicals to meet the needs of the drilling industry. The general classification of drilling fluid additives below is based on the definitions of the International Association of Drilling Contractors (IADC): Alkalinity or pH control additives are products designed to control […]
Fishing Operations and Equipment A fish is a part of the drill string that separates from the upper remaining portion of the drill string while the drill string is in the well. This can result from the drill string failing mechanically, or from the lower portion of the drill string becoming stuck or otherwise becoming […]
