General Drilling Guidelines
The general guidelines for drilling given below should be followed along with hole specific requirements:
Quick Tips About Drilling Problems
Below general good practice steps to avoid general drilling problems encountered during drilling operations Inadvertent Side-tracking (in soft formation) Gumbo (sticky shale) Hole Cleaning Borehole Instability (brittle shale) Lost Circulation (common in drilling carbonate formations) Swelling Shale
Drilling Bits Types In Oil And Gas Rigs
All types of drilling bits used in oil and gas have seen perhaps more technological advancements over the past years than any other type of drilling equipment. These advancements include such items as: Each of these advancements represents a significant improvement over previous designs, and they tend to increase the effectiveness of the drilling process. …
Margin Of Overpull Calculations & Excel Sheet
Overpull Drilling is the maximum pull exerted on a stuck drill pipe without causing failure in the Drill String. In this article, we shall learn more about the margin of drill pipe overpull calculations, and there is also an online calculator for it. Maximum Overpull In Drilling The maximum overpull exerted on stuck drill pipe …
Drill String Design For Inclined & Horizontal Wells
As was discussed in the previous sections (Drill String Design), the drill string in vertical wells is designed so that the mechanical weight on the bit is provided by the drill collars. The buckling neutral point should always be below the top of the drill collars to prevent any buckling to the DP and HWDP. …
Drill String Design For Horizontal Wells
How Drill String Design In Horizontal Wells Differs From In Vertical Wells The design approach in high inclination and horizontal wells differs from the approach in vertical wells in the following respects: The objectives of drill string design in horizontal wells are: Provide adequate weight on bit without buckling the drill pipe or heavy weight …
Drill String Friction Coefficient Calculation
Friction Coefficient Definition Drill String Friction Coefficient determines how much of the normal force is transformed into drag or torque and it is an important factor in calculating Torque And Drag in a wellbore. Drill String Friction Coefficient can be calculated from actual drilling situations for a particular well geometry using a computer program with …
Example On Drilling Torque & Drag Calculations
Example On The Drill String Drag Calculations Given: Well bore Drill String With the drill string at bottom, calculate: The first step is to divide the drill string into small elements from bottom to top as shown in below Table. The drill collars are considered as one element since there is no change in inclination …
Torque And Drag In Drilling & Calculations Spreadsheet
In Drilling Torque and Drag Calculations, we will discuss how to manually calculate the total Torque & drag in the drill string. Then we will direct you to the torque calculations section also we will provide you with simple examples showing how to calculate. In addition to the above, you can also download a torque …
Drill String Weight Calculation Methods
In this article we will talk about the Drill String weight calculation and its design methods. In this article we will mention the different methods of calculation drill string weight calculation and what is the difference between them. How To Calculate Drill String Weight Calculate Weight in Air which will be an assumption of all …