ES8702586A1 - Screw type down-the-hole motor - Google Patents

Screw type down-the-hole motor

Info

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
Application number
ES546438A
Other languages
Spanish (es)
Other versions
ES546438A0 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INST BUROVOI TEKHNIK
Original Assignee
INST BUROVOI TEKHNIK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by INST BUROVOI TEKHNIK filed Critical INST BUROVOI TEKHNIK
Priority to ES546438A priority Critical patent/ES8702586A1/en
Publication of ES546438A0 publication Critical patent/ES546438A0/en
Publication of ES8702586A1 publication Critical patent/ES8702586A1/en
Expired legal-status Critical Current

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  • 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).
ES546438A 1985-08-27 1985-08-27 Screw type down-the-hole motor Expired ES8702586A1 (en)

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)

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