If you have ever visited an oil drilling site, you may wonder, “What is a drill string?” Drill strings are columns of drill pipes that are connected. send the drilling fluid to the drill bit through mud pumps and torque. The drilling rods in a drill string are attached to the head to ensure smooth drilling.
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A drill string comprises a group of pipes and tools that allow oilfield operators to deliver the weight, rotation, and fluids to the bottom of the drilled oil well. It plays a vital role in the rotary drilling process. Some drill string components are the drilling bits, weight on bits, and drill pipes. Now, let’s see how these parts work.
Drill String Components
Comprises a
drilling bitfor breaking up rock formations and heavy
drill collarsthat exerts weight on the drill bit during oil well drilling. BHA also comprises reamers, jars, shock subs, and drill string stabilizers.
A transition pipe is a heavy-weight drill pipe (HWDP). Some few years back, a drill string consisted of two major parts: pipes and collars. But since drill pipe
fatigue damagebecame too common, transition pipes were built.
A drill pipe comprises most of a drill string from the bottom of an oil well to the surface. Every drill pipe has a long tubular section with a specific outside diameter. Each end of a drill pipe tubular has tool-joint connections.
How it Works
So, how does a drill string work during oil well drilling? A drill string is a drill pipe that transmits the driving force from a rig on the surface to the drill bit at the bottom of the well. This works through a rotational motion. Drill strings are tubular to allow the supply of drilling fluid to cool the components and transfer rock cutting back to the surface.
Where Blowout Preventers Fit In
Blowout preventers are vital in preventing potential “kicks” that may occur during drilling. If a kick happens, the highly pressurized, combustible fluids can uncontrollably flow up the wellbore and cause a blowout. Installing a blowout preventer (BOP) above the drill string can control the flow of pressurized fluids by sealing off the well in many ways.
BOP Products Can Help
Now that you understand how a drill string works and where blowout preventers can fit in, you need to invest in blowout preventers to protect your workers from harm. An oil well blowout can be catastrophic, so drilling an oil well without a blowout preventer risks your workers’ lives. BOP Products can help you install the right BOP for your oil well.
Contact us today for reliable and affordable blowout preventers and accessories.
Details
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Rotary BOP device:
1. Equipment usage
The equipment is a rotary deflector, that is, to guide the fluid returned from the parallel barrel away from the drill floor, establish the shielding between the annulus and the drill floor, and bear certain pressure, so as to realize the purpose of underbalanced drilling. It can be widely used in negative pressure drilling, natural gas and air drilling, workover operation and normal drilling. It can effectively reduce drilling cost, reduce mud damage to formation, increase oil well production and achieve the effect of environmental protection drilling.
2. Product development
Rotary BOP, also known as rotary control head, is an indispensable key equipment for underbalanced drilling technology. With the increasingly strict requirements of environmental protection drilling, the equipment will also be used in the field of normal drilling. The rotary control head is installed on the top of annular BOP or ram blowout preventer, which is used to seal the rotary drilling tool and play a diverting role in realizing underbalanced drilling technology and other pressurized drilling operations. It can be used for drilling with pressure and tripping without killing after matching with hydraulic BOP, check valve of drilling tool, gas separator and snubbing pressure device. It plays an important role in special operations such as releasing low pressure oil and gas reservoir, leak proof drilling, aerated drilling, snubbing and workover. At present, most of the rotary blowout preventers used in domestic oil fields are imported products, which are expensive. In order to promote the large-scale application of underbalanced drilling technology in China and meet the drilling requirements of different oilfield areas, our company has jointly developed a series of rotary blowout preventers (double rubber core rotary head and single rubber core rotary head) jointly with Sinopec Zhongyuan Oilfield. The new fxb20 / 35-17.5/35 rotary BOP can pass through 51 / 2 Drilling tools (this type of equipment has always been a monopoly product of foreign countries, only leased to the Chinese market, not sold, resulting in high operating costs in China's domestic oilfields. When competing for the third bid abroad, it was often led by foreign companies because of its high price). The birth of this type of equipment filled in the domestic blank, thus obtained the patent right, and made due contributions to China's oilfield industry.
3. List of specifications and models of series products:
FXB18/35-17.5/35-35 FXB18/35-14/21-35
FXB18/35-17.5/35-70 FXB18/35-14/21-70
FXB20/35-17.5/35-35 FXB18/35-7/14-35
FXB20/35-17.5/35-70 FXB18/35-7/14-70
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