US3882946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbodrill
Assignee: Individual
•
Filing: 1974-04-24
•
Granted: 1975-05-13
•
Expires: 1994-04-24
Abstract
Abstract A turbodrill provided with at least two multistage hydraulic turbines mounted one after another and operating in succession at different speeds. According to the invention, the first element along the path of the drilling fluid fed from the turbodrill is a low-speed turbine and/or hydrodynamic braking stages mounted on a solid shaft and capable of passing the total flow of the fluid. The second element along the path of the drilling fluid is a high-speed turbine capable of utilizing a high pressure drop and developing a high torque, with the turbine being mounted on a hollow shaft connected to a bit. Ahead of the high-speed turbine inlet, there is mounted a device dividing the fluid coming from the low-speed turbine into two flows, one being directed to the high-speed turbine and the other being directed to the bit through the hollow shaft of this turbine. The turbodrill allows a high pressure drop to be utilized in the bit without increasing the pressure in the delivery line of the mud pump and thereby providing for a hydraulic effect without using a packing gland at low speeds of the bit and high axial loads on the bottom hole.
Inventors
- 👤 Rolen Arsenievich Ioannesian
- 👤 Jury Rolenovich Ioanesian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:05
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02; F; F03; F03B; F03B13/00; F03B13/02; Y; Y10; Y10S; Y10S415/00; Y10S415/903
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
218 words
A turbodrill for drilling oil and gas wells in an assembly with a drilling unit comprising drill pipes, through which a drilling fluid is supplied into the turbodrill and a mud pump for delivering the drilling fluid into said drill pipes; said turbodrill, comprising, in combination, a housing, at least two multistage hydraulic turbines having different speeds, said turbines being mounted in said housing one after another and operating in succession; the low-speed turbine passing the total flow of the drilling fluid coming from said drill pipes being located as a first element along the path of said fluid; the next element along the path of said fluid being the high-speed turbine utilizing a high pressure drop and developing a high torque; a solid shaft on which said low-speed turbine is mounted; a hollow shaft on which said high-speed turbine is mounted and having one end connected to a bit; a device dividing the fluid coming from said low-speed turbine into two flows, one flow being directed to said high-speed turbine and the other flow being directed through said hollow shaft to said bit so that the turbodrill operates with a hydraulic effect defined by the pressure drop in both the turbines and utilized by the high-speed turbine without applying any substantial additional load to said mud pump.
Claim 2
Dependent Claim
218 words
A turbodrill for drilling oil and gas wells in an assembly with a drilling unit comprising drill pipes, through which a drilling fluid is supplied into the turbodrill and a mud pump for delivering the drilling fluid into said drill pipes; said turbodrill, comprising, in combination, a housing, at least two multistage hydraulic turbines having different speeds, said turbines being mounted in said housing one after another and operating in succession; the low-speed turbine passing the total flow of the drilling fluid coming from said drill pipes being located as a first element along the path of said fluid; the next element along the path of said fluid being the high-speed turbine utilizing a high pressure drop and developing a high torque; a solid shaft on which said low-speed turbine is mounted; a hollow shaft on which said high-speed turbine is mounted and having one end connected to a bit; a device dividing the fluid coming from said low-speed turbine into two flows, one flow being directed to said high-speed turbine and the other flow being directed through said hollow shaft to said bit so that the turbodrill operates with a hydraulic effect defined by the pressure drop in both the turbines and utilized by the high-speed turbine without applying any substantial additional load to said mud pump.
Claim 3
Dependent Claim
71 words
The turbodrill as claimed in claim 1, in which the device dividing the fluid into two flows is a coupling connecting the solid shaft with the hollow shaft for summing up the torques developed by the turbine and transmitted to the bit; the half-coupling secured on the solid shaft having openings for bypassing a portion of the fluid running from the low-speed turbine into the hollow shaft of the high-speed turbine.
Claim 4
Dependent Claim
47 words
The turbodrill as claimed in claim 1, in which the high-speed turbine is made so that the inlet and outlet angles of the rotor blades are substantially equal to each other and the inlet and outlet angles on the stator blades are substantially equal to each other.
Claim 5
Dependent Claim
33 words
The turbodrill as calimed in claim 1, in which the high-speed turbine has stator and rotor blades whose inlet and outlet angles are less than the similar angles of the low-speed turbine blades.
Claim 6
Dependent Claim
47 words
The turbodrill as claimed in claim 4, in which the high-speed turbine is made so that the inlet and outlet angles of its rotor blades are substantially eqial to each other and the inlet and outlet angles of the stator blades are substantially equal to each other.
Claim 7
Dependent Claim
26 words
The turbodrill as claimed in claim 1, in which the high-speed turbine has blades whose radial heights are lower than those of the low-speed turbine blades.
Claim 8
Dependent Claim
47 words
The turbodrill as claimed in claim 6, in which the high-speed turbine is made so that the inlet and outlet angles of its rotor blades are substantially equal to each other and the inlet and outlet angles of its stator blades are substantially equal to each other.
Claim 9
Dependent Claim
190 words
A turbodrill for drilling gas and oil wells in an assembly with a drill unit comprising drill pipes, through which a drill fluid is supplied into the turbodrill, and a mud pump for delivering the drilling fluid into said drill pipes; said turbodrill comprising, in combination, a Housing, a low-speed turbine defining, hydrodynamic braking stages and a high-speed turbine located in said housing one after another and operating in succession; the hydrodynamic braking stages being arranged first along the path of the drilling fluid coming from said drill pipes and passing the total flow of said fluid; the next element along the path of said drilling fluid being the high-speed turbine capable of utilizing a high pressure drop and developing a high torque; a solid shaft mounting the hydrodynamic braking stages; a hollow shaft mounting said high-speed turbine and one end of which is connected to a bit; a device dividing the fluid coming from the low-speed turbine into two flows, one of which is directed to said high-speed turbine, while the other is directed through said hollow shaft to said bit so that the turbodrill operates with hydraulic effect.
Claim 10
Dependent Claim
190 words
A turbodrill for drilling gas and oil wells in an assembly with a drill unit comprising drill pipes, through which a drill fluid is supplied into the turbodrill, and a mud pump for delivering the drilling fluid into said drill pipes; said turbodrill comprising, in combination, a Housing, a low-speed turbine defining, hydrodynamic braking stages and a high-speed turbine located in said housing one after another and operating in succession; the hydrodynamic braking stages being arranged first along the path of the drilling fluid coming from said drill pipes and passing the total flow of said fluid; the next element along the path of said drilling fluid being the high-speed turbine capable of utilizing a high pressure drop and developing a high torque; a solid shaft mounting the hydrodynamic braking stages; a hollow shaft mounting said high-speed turbine and one end of which is connected to a bit; a device dividing the fluid coming from the low-speed turbine into two flows, one of which is directed to said high-speed turbine, while the other is directed through said hollow shaft to said bit so that the turbodrill operates with hydraulic effect.
Claim 11
Dependent Claim
72 words
The turbodrill as claiamed in claim 8, in which the device dividing the fluid into two flows is a coupling connecting the solid shaft to the hollow shaft for summing up the torques developed by the turbines and transmitted to the bit; the half-coupling secured on the solid shaft having openings for bypassing a portion of the fluid flow running from the low-speed turbine into the hollow shaft of the high-speed turbine.
Claim 12
Dependent Claim
33 words
The turbodrill as claimed in claim 8, in which the high-speed turbine has stator and rotor blades whose inlet and outlet angles are less than the similar angles of the low-speed turbine blades.
Claim 13
Dependent Claim
47 words
The turbodrill as claimed in claim 10, in which the high-speed turbine is made so that the inlet and outlet angles of the rotor blades are substantially equal to each other and the inlet and outlet angles of the stator blades are substantially equal to each other.
Claim 14
Dependent Claim
26 words
The turbodrill as claimed in claim 8, in which the high-speed turbine has blades whose radial heights are lower than those of the low-speed turbine blades.
Claim 15
Dependent Claim
47 words
The turbodrill as claimed in claim 12, in which the high-speed turbine is made so that the inlet and outlet angles of its rotor blades are substantially equal to each other and the inlet and outlet angles of its stator blades are substantially equal to each other.
Claim 16
Dependent Claim
193 words
A turbodrill for drilling gas an oil wells in an assembly with a drilling unit comprising drill pipes, through which a drilling fluid is supplied into the turbodrill, and a mud pump for delivering said drilling fluid into said drill pipes; said turbodrill comprising in combination, a housing, two multistage hydraulic turbines operating with different speeds and hydrodynamic braking stages arranged in said housing one after another and operating in succession; the first element along the path of the drilling fluid coming from said drill pipes being the low-speed turbine and the hydro-dynamic braking stages which pass the total flow of said fluid; the next element along the path of said drilling fluid being a high-speed turbine capable of utilizing a high pressure drop and developing a high torque; a hollow shaft mounting said high-speed turbine and one end of which is connected to a bit; and a device dividing the fluid coming from said low-speed turbine and hydrodanymic braking stages into two flows, one of which is directed into said highspeed turbine and the other is directed through said hollow shaft to said bit so the turbodrill operates with a hydraulic effect.
Claim 17
Dependent Claim
193 words
A turbodrill for drilling gas an oil wells in an assembly with a drilling unit comprising drill pipes, through which a drilling fluid is supplied into the turbodrill, and a mud pump for delivering said drilling fluid into said drill pipes; said turbodrill comprising in combination, a housing, two multistage hydraulic turbines operating with different speeds and hydrodynamic braking stages arranged in said housing one after another and operating in succession; the first element along the path of the drilling fluid coming from said drill pipes being the low-speed turbine and the hydro-dynamic braking stages which pass the total flow of said fluid; the next element along the path of said drilling fluid being a high-speed turbine capable of utilizing a high pressure drop and developing a high torque; a hollow shaft mounting said high-speed turbine and one end of which is connected to a bit; and a device dividing the fluid coming from said low-speed turbine and hydrodanymic braking stages into two flows, one of which is directed into said highspeed turbine and the other is directed through said hollow shaft to said bit so the turbodrill operates with a hydraulic effect.
Claim 18
Dependent Claim
68 words
The turbodrill as claimed in claim 14, in which the device dividing the fluid into two flows is a coupling connecting the solid shaft with the hollow shaft for summing up the turbine torques transmitted to the bit; the half-coupling secured on the solid shaft having openings for bypassing a portion of the fluid flow running from the low-speed turbine into the hollow shaft of the high-speed turbine.
Claim 19
Dependent Claim
31 words
The turbodrill as claimed in claim 14, in which the high-speed turbine has stator and rotor blades whose inlet and outlet angles are less than those of the low-speed turbine blades.
Claim 20
Dependent Claim
47 words
The turbodrill as claimed in claim 16, in which the high-speed turbine is made so that the inlet and outlet angles of its rotor blades are substantially equal to each other and the inlet and outlet angles of its stator blades are substantially equal to each other.
Claim 21
Dependent Claim
26 words
The turbodrill as claimed in claim 14, in which the high-speed turbine has blades whose radial heights are lower than those of the low-speed turbine blades.
Claim 22
Dependent Claim
47 words
The turbodrill as claimed in claim 18, in which the high-speed turbine is made so that the inlet and outlet angles of its rotor blades are substantially equal to each other and the inlet and outlet angles of its stator blades are substantially equal to each other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |