![]() The well is then fractured and the tubing is installed inside the production casing. At the conclusion, the drill string is removed and the production casing is inserted into the wellbore and cemented into place. Thanks to horizontal drilling, deposits can be reached in a more targeted way. The “kickoff point” is where the wellbore gradually transitions from vertical to horizontal. Anything smaller is called tubing, anything larger is casing.įrom the surface to the bottom of the well, the casing telescopes down in size – there are various types of casing depending on their purpose and diameter. An outer diameter of 114.3 mm (4 1/2 inches) is considered a threshold and can be either casing or tubing. Tubing naturally has a smaller diameter than casing, except for the 4 1/2-inch diameter. Oil and gas occasionally rise to the surface on their own usually, pumps are needed to bring the fluids to the surface. Tubing transports the oil and gas from deep in the well to the surface – the third phase of the wellbore. The drilling and casing alternate – the drill string is taken out at specific intervals and the wellbore is lined with casing and cemented. It also stabilizes the wellbore, so casing must be able to withstand especially high loads. Casing lines the wellbore and thus protects the layers of soil and above all the groundwater from being contaminated by the drilling mud and/or frac fluids. Drilling mud meanwhile cools the drill bit and carries the rock cuttings, i.e. Drilling with drill pipe is the first phase of every wellbore. The last drill pipes before the drill bit are often nonmagnetic drill collars, particularly in horizontal drilling. In many cases the drill pipe turns the drill bit, which cuts into the rock until it reaches the deposits. All re-runs are premium quality and available for use in soft, medium, and hard formations.Production of oil or gas is a complex, time- and cost-intensive undertaking, but in principle, every wellbore goes through three phases.ĭrill pipes are durable steel pipes that conduct the force to the drill bit. Hole Products offers a variety of re-run carbide bits in sizes ranging from 2 1/2" to 36". Re-runs offer significant cost savings over new carbide insert bits. Re-run carbide insert bits are used bits that have been re-worked, cleaned, and often times painted. Re-tip bits are available for use in soft, medium, and hard formations.Ĭontact a Hole Products representative for additional details about our complete line of re-tip steel tooth tricone drill bit product offerings. Hole Products offers a wide range of premium, oil field quality re-tip steel tooth bits in sizes ranging from 2 1/2" to 36". ![]() ![]() These bits offer significant cost savings over new bits. They are refurbished for use in non-oilfield rotary applications, such as water wells, HDD, and construction type drilling. Re-tip steel tooth tricone bits are gently used bits that usually come from the oil fields. Sealed roller bearing bits extend the bearing life, allowing for increased utilization of the cutting structure.Ĭlick here to view IADC codes for additional tricone bit ordering guidelines.Ĭontact a Hole Products representative for additional details about our complete line of new tricone drill bit product offerings. iii ) use drilling bits which drill a full-size or full-gauge hole during the entire time they are on bottom. ii ) run drilling bits with a long working life to reduce trip time. Sealed bearing tricone bits are available for use in applications where, historically, bearing life has limited bit performance. The aim of oil well drilling is to: i ) make hole as fast as possible by selecting drilling bits which produce good penetration rates. Open bearing bits are generally cheaper than sealed bearing bits, and recommended for shallower holes. ![]() Open bearing bits feature bearings without a seal that are open to outside debris. TCI bits offer increased durability over steel tooth bits but also carry a higher cost. Steel teeth or carbide inserts come in a variety of shapes, sizes, and grades of tungsten carbides to address specific drilling conditions. Tricone bits can be customized to optimize penetration rates and bit life in particular formations and under specific operating weights and rotation speeds. Hole Products offers new steel tooth and tungsten carbide insert (tci) tricone bits in sizes from 2 1/2" – 36", with open or sealed bearings, regular or jet circulation, and a wide range of additional custom features for ideal performance in any formation. Tricone bits are available in new and used (re-tip and re-run) steel tooth and tungsten carbide insert, in sizes from 2 1/2" to 36", for use in all formations, with any bearing/seal type, and with a wide range of additional custom features. Hole Products offers a complete line of tricone drill bits. ![]()
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