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The process of drilling a pilot hole along a present path between the predetermined entrance and exit points is known as directional drilling. Over the past 50 years, it has undergone modifications to allow for the drilling of multiple holes from a single rig; in the past, vertical drilling was the only method available for drilling a wellbore. It is a method or ability to direct the drill stem and bit to a certain downhole in order to divert a wellbore to a predetermined destination. Directional wells are bored straight down to a predetermined depth and then gradually bent at one or more places to penetrate one or more target reservoirs. Directional drilling is often achieved by using a fluid-driven downhole motor to turn the drill bit. The limitations of directional drilling are primarily dependent upon maximum hole angle, rate of angle change, and torque or friction considerations. Below are the various Directional Drilling techniques used in Oil & Gas field: 1.  Multiple we...

Choosing the right drill bit for any application is of utmost importance in terms of ensuring success and productivity. Other than ground conditions, some other factors that influence the choice of most suitable drill bit have been discussed below. 1. Drill Rig One of the first things that need to be given attention to when choosing the perfect drill bit is the type of drill and its working capacity. When using an old-style drill rig, go ahead with a bit specified for lower RPM. 2. Drilling Expertise If you are still new to the world of drilling and drilling technologies, you should put in extra effort to make sure that the RPM corresponds with the diameter you are using. 3. Knowledge of Area to be Drilled If you have no idea about the area that needs to be drilled, you should start off by taking a look at the previous drilling campaigns that might have been carried out in that area. As a precautionary measure, you may want to go ahead with choosing a drill bit that is suited for a wid...

A drag bit usually consists of a couple of rigid steel blades which rotate as a single unit to drill through soft to medium formations. Drag bits underwent major transformation until hard facing was introduced to the surface of the blades and the design of fluid passageways improved its performance several folds. Since these bits drill through scraping action, they have high rate of penetration. Even though drag bits have been around for the longest time and were the first bits used in rotary drilling applications across the globe, they lost their importance over time for several reasons. Some of these being: 1. Roller cone drill bits could drill soft formations in a much better way than the drag bits. 2. Since drag bits were designed to work on low WOB, excess WOB would result in excessive torque and thus, lead to bit failure. 3. As drag bits would drill crooked holes, the need for some means of controlling this deviation arose. 4. Drag bits were designed to drill through formations t...

  Be it for a waterwell or a construction project, choosing the right drill bits for any project is a critical decision that can save you a lot of money on costly replacements and even optimizes the performance. There is an ideal bit for every kind of rock formation and soil type – the key for effective drilling is identifying this bit. Let’s take a look at the performance characteristics of some of the most commonly available drill bits: Step Drag Bits : Step drag bits are well-suited for clay, sand, and medium hard formations. These bits are capable of drilling pilot holes quickly and feature a hardness that ensures a sharp cutting edge and longevity. These can be paired with reamers of different sizes for opening holes. Roller Cone Bits: Roller cone bits will allow you to power through the toughest of the soils and rocks. The durable TCI inserts steel-based products with increased efficiency and longevity PDC Bits : Polycrystalline Diamond Compact bits have spinning PDC cutters ...

Before we delve deep into the comparison between tricone drill bits and PDC drill bits, it is important to understand what drill bits actually are. There exists a drill bit for just about every application, from simple bits for drilling into sheet metal on home projects, to specialized tungsten carbide diamond impregnated bits for drilling into hard rock formations . Knowing which drill bits are the most efficient comes with years of drilling experience and research. Tricone drill bits have been in the market way before rock-shearing bits like PDC ’s came into existence. While the drilling bit PDC may be a relative newcomer to the drilling industry, its strength and solidity have enabled it to hit the ground running on a number of fronts : 1.       Live Long and Prosper While tricones require a lower the initial investment, PDC bits can be more cost-effective in the long run, thanks to the fact that their greater lifespan equates to a less frequent b...