CN202544754U

CN202544754U - Screw drilling tool

Info

Publication number: CN202544754U
Application number: CN2012202009134U
Authority: CN
Inventors: 陈业宏; 沈郁平; 王国华; 朱加全; 陈飞
Original assignee: YANCHENG HUAYA PETROLEUM MACHINERY MANUFACTURE CO Ltd
Current assignee: YANCHENG HUAYA PETROLEUM MACHINERY MANUFACTURE CO Ltd
Priority date: 2012-05-07
Filing date: 2012-05-07
Publication date: 2012-11-21
Anticipated expiration: 2022-05-07

Abstract

The utility model discloses a screw drilling tool with a good using effect. The screw drilling tool comprises a bypass valve, a motor, a universal shaft and a transmission shaft assembly, wherein a cable drilling and deflection preventing assembly and a drill bit joint are arranged at the lower end of an inner shaft of the transmission shaft assembly; the cable drilling and deflection preventing assembly comprises a jacket connected with the transmission shaft assembly, a plurality of grooves formed on the jacket, centering edges matched with the grooves, and springs arranged in the grooves between the centering edges and the jacket; the upper ends of the centering edges are welded on the jacket through pressing rings; and the lower ends of the centering edges are fixed on the jacket through locking nuts. The screw drilling tool has the advantages that when the drilling tool is pulled in a horizontal well, an inclined well and a measure well, the centering edges with the springs are stressed and compressed if a casing wall is impacted, effective buffer and shock absorbing effects can be achieved, the drilling tool is convenient to pull, and the drilling tool and a casing are protected; and when the drilling tool is positioned at the bottom of the well for milling, the centering edges of the cable drilling and deflection preventing assembly have a centering effect, so that the phenomena that eccentric wear is caused and the casing and a milling head are damaged because a drill bit is tightly attached to the casing are avoided.

Description

Helicoid hydraulic motor

Technical field

The utility model relates to a kind of drilling well, well workover power drilling tool.

Background technology

Petroleum resources are a kind of non-renewable resources, and along with the increasing of oil exploitation synergy control potentiality degree, oil drilling, workover treatment are gradually to more deeply more complicated geological extension; Inclined shaft, horizontal well and service shaft are more and more; Owing to casing deformation, bending, tiltedly stretch, frequent bump casing wall when common drilling tool removes, cause the drilling tool percussion drill impaired with the cover tube damage; Also usually produce deflection during milling, sleeve pipe, drill bit damage accident take place.

The utility model content

The utility model technical problem to be solved is: provide a kind of result of use good helicoid hydraulic motor.

In order to solve the problems of the technologies described above; The technical scheme that the utility model adopts is: helicoid hydraulic motor; Comprise: bypass valve, motor, universal drive shaft and driving-shaft assembly; The lower end of axle is provided with anti-anti-inclined to one side assembly and bit adapter in the said driving-shaft assembly; The structure of said anti-anti-inclined to one side assembly comprises: the overcoat that is connected with driving-shaft assembly, on the coat some grooves are set, set upright rib and be arranged on and set upright the spring in the groove between rib and the overcoat with groove cooperatively interacts, the said upper end of setting upright rib is set upright the lower end of rib and is fixed on the coat through locking nut through the trim ring welding on the coat.

In order to solve the problems of the technologies described above better, the further technical scheme that the utility model adopts is: said outside, put and four grooves are set and set upright rib.

The utility model has the advantages that: above-mentioned helicoid hydraulic motor, during drilling, if the bump casing wall, the rib of setting upright that has spring receives force compresses in horizontal well, inclined shaft and service shaft; Effectively bumper and absorbing shock is convenient to remove, protection drilling tool and sleeve pipe; When drilling tool was located in the shaft bottom milling, anti-the rib of setting upright of preventing inclined to one side assembly had centralizing function concurrently; Prevent that drill bit is adjacent to sleeve pipe, eccentric wear takes place, damage sleeve pipe and milling head.

Description of drawings

Fig. 1 is the sectional structure sketch map of the utility model helicoid hydraulic motor the first half.

Fig. 2 is the sectional structure sketch map of the utility model helicoid hydraulic motor the latter half.

Among the figure: 1, bypass valve, 2, motor, 3, universal drive shaft, 4, driving-shaft assembly, 5, axle, 6, bit adapter, 7, overcoat, 8, groove, 9, set upright rib, 10, spring, 11, trim ring, 12, locking nut.

The specific embodiment

Describe the particular content of the utility model in detail below in conjunction with accompanying drawing and specific embodiment.

Like Fig. 1, shown in Figure 2; Helicoid hydraulic motor; Comprise: bypass valve 1, motor 2, universal drive shaft 4 and driving-shaft assembly 4; The lower end of axle 5 is provided with anti-anti-inclined to one side assembly and bit adapter 6 in the said driving-shaft assembly 4; The structure of said anti-anti-inclined to one side assembly comprises: the overcoat 7 that is connected with driving-shaft assembly 4, be arranged on some grooves 8 on the overcoat 7, set upright rib 9 and be arranged on and set upright the interior spring 10 of groove between rib 9 and the overcoat 78 with groove 8 cooperatively interacts, the said upper end of setting upright rib 9 is welded on the overcoat 7 through trim ring 11, and the lower end of setting upright rib 9 is fixed on the overcoat 7 through locking nut 12; Four grooves 8 are set on said overcoat 7 and set upright rib 9.

Above-mentioned helicoid hydraulic motor, during drilling, if the bump casing wall, the rib of setting upright that has spring receives force compresses in horizontal well, inclined shaft and service shaft; Effectively bumper and absorbing shock is convenient to remove, protection drilling tool and sleeve pipe; When drilling tool was located in the shaft bottom milling, anti-the rib of setting upright of preventing inclined to one side assembly had centralizing function concurrently; Prevent that drill bit is adjacent to sleeve pipe, eccentric wear takes place, damage sleeve pipe and milling head.

Claims

1. helicoid hydraulic motor; Comprise: bypass valve (1), motor (2), universal drive shaft (4) and driving-shaft assembly (4); It is characterized in that: the lower end of axle (5) is provided with anti-anti-inclined to one side assembly and bit adapter (6) in the said driving-shaft assembly (4); The structure of said anti-anti-inclined to one side assembly comprises: the overcoat (7) that is connected with driving-shaft assembly (4), be arranged on some grooves (8) on the overcoat (7), set upright rib (9) and be arranged on and set upright the interior spring (10) of groove (8) between rib (9) and the overcoat (7) with groove (8) cooperatively interacts; The said upper end of setting upright rib (9) is welded on the overcoat (7) through trim ring (11), and the lower end of setting upright rib (9) is fixed on the overcoat (7) through locking nut (12).

2. according to the described helicoid hydraulic motor of claim 1, it is characterized in that: four grooves (8) are set on said overcoat (7) and set upright rib (9).