ES8702586A1 - Screw type down-the-hole motor - Google Patents
Screw type down-the-hole motorInfo
- Publication number
- ES8702586A1 ES8702586A1 ES546438A ES546438A ES8702586A1 ES 8702586 A1 ES8702586 A1 ES 8702586A1 ES 546438 A ES546438 A ES 546438A ES 546438 A ES546438 A ES 546438A ES 8702586 A1 ES8702586 A1 ES 8702586A1
- Authority
- ES
- Spain
- Prior art keywords
- modules
- rotor
- eccentricity
- rotors
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Drilling And Boring (AREA)
Abstract
Screw-type motor to act as the down-the hole drive for a rotary drill bit in deep well drilling operations contains several screw mechanisms, connected in series with coaxial stators. Rotors in them have centre lines which are displaced relative to those of the stators by an eccentricity (e). The individual mechanisms are grouped into modules of two and the modules in blocks of four mechanism. The offsets of the rotor compensate each other across a block. - The down-the-hole motor (1) consists of one block (3), divided in two modules (4,5), each with two screw mechanisms (6,7) and (8,9). Each mechanism has a stator (10,12,14,16) which are joined by threaded sleeves (18), and a rotor (11,13,15,17) which are offset relative to the centre line 0-0 by the eccentricity (e). The last rotor (17) is coupled by flexible shaft (20) to the spindle (19) carrying the drill bit. Flexible shafts (21,22,23) join the rotors, in combination with guide joints (25) designed with cranks (26,27,28) which have a working surface (29,30) in bearings (31,32).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES546438A ES8702586A1 (en) | 1985-08-27 | 1985-08-27 | Screw type down-the-hole motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES546438A ES8702586A1 (en) | 1985-08-27 | 1985-08-27 | Screw type down-the-hole motor |
Publications (2)
Publication Number | Publication Date |
---|---|
ES546438A0 ES546438A0 (en) | 1986-12-16 |
ES8702586A1 true ES8702586A1 (en) | 1986-12-16 |
Family
ID=8489747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES546438A Expired ES8702586A1 (en) | 1985-08-27 | 1985-08-27 | Screw type down-the-hole motor |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES8702586A1 (en) |
-
1985
- 1985-08-27 ES ES546438A patent/ES8702586A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES546438A0 (en) | 1986-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19960603 |