Vasili, well done! Applying rocket expertise about materials and heat to drill bits revolutionized getting to the good stuff. I bet the man doing the drilling love you.
Few testimonies on this drill bit usage had a statement that "wellbore after drilling by this DB looks like a rifle barrel, smooth and with no cavities.” One of the components of that phenomena and another advantage of this DB is below: Due to fine, very small particles/cheeps size resulted as a direct impact of mud jet at the tip of the cutter, mix of very fine cheeps and mud moving upward of the well bore and settled in cavities and on uneven surfaces packing them and making well bore smooth. Diffusion and pressure gradient of fine particles to the rocks above our DB is happening way quicker and they are solidifying with rocks much better, then while drilling by the standard DB. This resulted in a smooth and very good quality wellbore in comparison with a DB from other suppliers.
It make case such mechanism of packing any cavities by our fine drill particles. However the main mechanism is the even intensive lubrications by jets. This make the uniform circumferential movement of the drill bit and greatly reduce the excitation of the vibration at drill bit end.
We have very high Dynamic pressure which prevents any cloggings. It is about 10,000,000 Pascal. And stagnation pressure developing at cutting edge provides the braking drill cuttings on very small particles. This mechanism is ABSENT in the conventional design and the cuttings has a big sizes, spiral form and brings a lot of problems! Such high stagnation pressure provides the superior cleaning which not achievable in the conventional drill bits. (You can compare with pressure washers). Because of the velocity at the cutters very low in conventional drill bits. Also such intense jet flow provides very uniform and reliable lubrications of the drill bit lateral surface. Which in turn provides uniform circumferential movement of the bit and does not excite the vibration at the end of string , at the bit. The well has form as the rifle bore.
Very interesting. However, I must warn that drilling on small land based, and shallow wells, is much different than drilling on the larger rigs and off-shore. The big guys are concerned about the quality of the hole, as it impacts the subsequent operations, such as setting casing. The small guys seem to be interested in ROP only. Don't care if the hole is straight or spirals. They also don't seem to worry about running a bit outside of the published parameters. Watch out for these guys.
The drill bit passed the 100 meters of CHERT in one pass like the knife through the butter in Oklahoma area. Before they used 4 drill bit (including rolling cone) from very big famous companies to pass this layer.
Vasili, well done! Applying rocket expertise about materials and heat to drill bits revolutionized getting to the good stuff. I bet the man doing the drilling love you.
Few testimonies on this drill bit usage had a statement that "wellbore after drilling by this DB looks like a rifle barrel, smooth and with no cavities.”
One of the components of that phenomena and another advantage of this DB is below:
Due to fine, very small particles/cheeps size resulted as a direct impact of mud jet at the tip of the cutter, mix of very fine cheeps and mud moving upward of the well bore and settled in cavities and on uneven surfaces packing them and making well bore smooth. Diffusion and pressure gradient of fine particles to the rocks above our DB is happening way quicker and they are solidifying with rocks much better, then while drilling by the standard DB. This resulted in a smooth and very good quality wellbore in comparison with a DB from other suppliers.
It make case such mechanism of packing any cavities by our fine drill particles. However the main mechanism is the even intensive lubrications by jets. This make the uniform circumferential movement of the drill bit and greatly reduce the excitation of the vibration at drill bit end.
We have very high Dynamic pressure which prevents any cloggings.
It is about 10,000,000 Pascal. And stagnation pressure developing at cutting edge provides the braking drill cuttings on very small particles. This mechanism is ABSENT in the conventional design and the cuttings has a big sizes, spiral form and brings a lot of problems!
Such high stagnation pressure provides the superior cleaning which not achievable in the conventional drill bits. (You can compare with pressure washers). Because of the velocity at the cutters very low in conventional drill bits.
Also such intense jet flow provides very uniform and reliable lubrications of the drill bit lateral surface. Which in turn provides uniform circumferential movement of the bit and does not excite the vibration at the end of string , at the bit.
The well has form as the rifle bore.
Very interesting. However, I must warn that drilling on small land based, and shallow wells, is much different than drilling on the larger rigs and off-shore. The big guys are concerned about the quality of the hole, as it impacts the subsequent operations, such as setting casing. The small guys seem to be interested in ROP only. Don't care if the hole is straight or spirals. They also don't seem to worry about running a bit outside of the published parameters. Watch out for these guys.
Curious how this’d work in hard chert reservoirs ? … if it works better I’d charge more for it, not less.
The drill bit passed the 100 meters of CHERT in one pass like the knife through the butter in Oklahoma area.
Before they used 4 drill bit (including rolling cone) from very big famous companies to pass this layer.