CN202194566U

CN202194566U - Anti-counter-rotation screw drilling tool with better efficiency

Info

Publication number: CN202194566U
Application number: CN2011202626100U
Authority: CN
Inventors: 刘峰; 迟天玺
Original assignee: TIANJIN ZHENGFANG TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN ZHENGFANG TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2011-07-23
Filing date: 2011-07-23
Publication date: 2012-04-18
Anticipated expiration: 2021-07-23

Abstract

The utility model relates to an anti-counter-rotation screw drilling tool with better efficiency. The anti-counter-rotation screw drilling tool includes an upper joint, a bypass valve, a stator, a rotor, a coupler, a water-passing joint, a bearing assembly, a drive shaft and a lower joint, wherein the upper joint is in threaded connection with an oil pipe or a drilling rod and applies positive rotation torque onto the oil pipe or the drilling rod through a tool. A drilling tool body is a cylinder, and the lower joint is connected with the drive shaft which is connected with the coupler via the water-passing joint and the bearing assembly. The stator and the rotor are fixedly connected to the coupler, and the bypass valve is situated at a place near the upper joint. The stator and the rotor are arranged in a double-spiral manner, and the eccentric throw between a rotor shaft and the central line of the stator is e. The anti-counter-rotation screw drilling tool effectively prevents a drilling tool from falling into a well due to counter rotation of the drilling tool and loosening of threads, always maintains proper drilling pressure to prevent idle running, and improves efficiency so as to yield twice the result with half the effort.

Description

Anti-reverse synergy helicoid hydraulic motor

Technical field

The utility model relates to a kind of mud motor that is used for address exploration, oil exploitation, especially relates to a kind of anti-reverse synergy helicoid hydraulic motor.

Background technology

In existing technology helicoid hydraulic motor be a kind of be power with the drilling fluid, can transfer fluid pressure to the positive displacement mud motor of mechanical energy.The slurry flows that pumps when slush pump gets into motor through bypass valve, forms certain pressure differential in the import and export of motor, promotes the axis rotation of rotor around stator, and rotating speed and moment of torsion are passed to drill bit through universal drive shaft and power transmission shaft, thus the realization drillng operation.Decades, on-the-spot the use found: 1. top connected oil pipe or drilling rod and counter-rotating takes place is prone to cause screw thread the fall generation of well accident of drilling tool of releasing when operation the pressure of the drill was bigger than normal; 2. workmanship drill bit or milling, cover mill when reducing the pressure of the drill, instrument such as sidetracking dallies, and form invalid operation.

Summary of the invention

The problem that the utility model will solve provides a kind of anti-reverse synergy screw drill, eliminates the counter-rotating of oil pipe or drilling rod, and can remain suitable the pressure of the drill and prevent idle running, raise the efficiency.

For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of anti-reverse synergy helicoid hydraulic motor; Comprise top connection, bypass valve, stator, rotor, shaft coupling, cross water swivel, bearing assembly, driving shaft and lower contact; Said top connection is connected with oil pipe or drill rod thread, and applies positive torque for said oil pipe or drilling rod by instrument; Said drilling tool body is a cylinder, and said lower contact is connected with driving shaft, and said driving shaft is connected with shaft coupling with the mistake water swivel through bearing assembly, and said stator and rotor are fixed in shaft coupling, and bypass valve is positioned at the position near top connection.Said stator and rotor are double helix and arrange.The eccentric throw of armature spindle and stator center line is e.

Advantage and the good effect that the utlity model has are: owing to adopt technique scheme; Apply positive torque to top connection oil pipe or drilling rod; Not only eliminate the counter-rotating of oil pipe or drilling rod and cause screw thread the fall generation of well accident of drilling tool of releasing; And accomplished to remain suitable the pressure of the drill prevent idle running, the effect of getting twice the result with half the effort of raising the efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model

Among the figure:

1, top connection 2, bypass valve 3, stator

4, rotor 5, shaft coupling 6, mistake water swivel

7, bearing assembly 8, driving shaft 9, lower contact

The specific embodiment

As shown in Figure 1; The utility model provides a kind of anti-reverse synergy spiral drill; Comprise top connection 1, bypass valve 2, stator 3, rotor 4, shaft coupling 5, cross water swivel 6, bearing assembly 7, driving shaft 8 and lower contact 9; Said top connection 1 is connected with oil pipe or drill rod thread, and applies positive torque for said oil pipe or drilling rod by instrument; Said drilling tool body is a cylinder, and said lower contact 9 is connected with driving shaft 8, and said driving shaft 8 is connected with shaft coupling 5 with mistake water swivel 6 through bearing assembly 7, and said stator 3 is fixed in shaft coupling 5 with rotor 4, and bypass valve 2 is positioned at the position near top connection 1.Said stator 3 is double helix with rotor 4 and arranges.4 eccentric throws with stator 3 center lines of rotor are e.

The course of work of this instance: top connection 1, bypass valve 2, stator 3, rotor 4, shaft coupling 5, mistake water swivel 6, bearing assembly 7, driving shaft 8 are connected with lower contact 9 successively.When anti-reverse synergy helicoid hydraulic motor was gone into the well, strict control lowering velocity in case stator 3 and rotor 4 reversings when too fast are threaded off inner thread, prevented locating to break drilling tool through sand bridge, casing shoe etc. simultaneously.Be lowered to oil pipe or drilling rod to subscribing the degree of depth; Turn on pump is supplied with anti-reverse synergy helicoid hydraulic motor high-pressure work power, and after highly pressurised liquid got into drilling tool through the drilling tool endoporus, valve ball was pushed and moves down; Close bypass valve 2, thereby get into each annular seal space of rotor 3 and stator 4 formation.The pressure differential of liquid in each chamber promotes the helical duct rolling of rotor 3 along stator 4.Rotor 3 is in the rotational of self, also around with rotor 3 parallel axes, and revolve round the sun with the stator that an eccentric distance e is arranged 4 center lines.Because rotor 3 all adopts helix with stator 4, thereby rotor 3 rotates counterclockwise around stator 4 axis, and clockwise rotates with self axis and to drive torque and rotate.After outlet was returned out normally, oil pipe or the drilling rod of being connected for top connection 1 applied positive torque.Not only eliminate the counter-rotating of oil pipe or drilling rod and cause the screw thread drilling tool generation of well accident that falls of releasing, and accomplished to remain suitable the pressure of the drill and prevent idle running, the effect of getting twice the result with half the effort of raising the efficiency.

More than the embodiment of the utility model is specified, but said content is merely the preferred embodiment of the utility model, can not be considered to be used to limit the practical range of the utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the utility model.

Claims

1. anti-reverse synergy helicoid hydraulic motor; Comprise top connection (1), bypass valve (2), stator (3), rotor (4), shaft coupling (5), cross water swivel (6), bearing assembly (7), driving shaft (8) and lower contact (9); It is characterized in that: said top connection (1) is connected with oil pipe or drill rod thread, and applies positive torque for said oil pipe or drilling rod by instrument;

Said drilling tool body is a cylinder; Said lower contact (9) is connected with driving shaft (8); Said driving shaft (8) is connected with shaft coupling (5) with mistake water swivel (6) through bearing assembly (7), and said stator (3) and rotor (4) are fixed in shaft coupling (5), and bypass valve (2) is positioned at the position near top connection (1).

2. anti-reverse synergy helicoid hydraulic motor according to claim 1 is characterized in that: said stator (3) and rotor (4) are double helix and arrange.

3. anti-reverse synergy helicoid hydraulic motor according to claim 1 and 2 is characterized in that: rotor (4) axle is e with the eccentric throw of stator (3) center line.