CN215256030U

CN215256030U - Rotary guide device for well drilling device

Info

Publication number: CN215256030U
Application number: CN202120889808.5U
Authority: CN
Inventors: 赵海茜; 胡东泽
Original assignee: Sichuan Zhong'an Jiasheng Petroleum Technology Co ltd
Current assignee: Sichuan Zhong'an Jiasheng Petroleum Technology Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-12-21
Anticipated expiration: 2031-04-27

Abstract

The utility model discloses a rotatory guider for drilling rig, including the well drilling guider main part, the well drilling guider main part flows the siphunculus including front end threaded connection's mud, and mud flows siphunculus outer wall and rotates and be connected with the outer tube, and a plurality of filtration pores on the helical blade surface are seted up including helical blade opposite with well drilling guider main part direction of rotation, axial to the outer tube, and helical blade flows the siphunculus inner wall laminating rotation with mud. The utility model discloses utilize the outer tube to rotate the in-process, be in relatively fixed structure between mud pipe and the geology, helical blade and the relative reverse rotation of outer tube for great granule is discharged by helical blade all the time, makes mud enter into mud through filtering the hole simultaneously and flows inside the siphunculus, has avoided great particulate matter to cause the jam, reduces current limiting device's damage.

Description

Rotary guide device for well drilling device

Technical Field

The utility model relates to a drilling rig rotary guide technical field, concretely relates to rotary guide device for drilling rig.

Background

The task of drilling a borehole from the surface using mechanical equipment or manual labor is known as drilling. Generally refers to the engineering of drilling boreholes and large diameter water-supply wells for the exploration or exploitation of liquid and gaseous minerals such as oil, gas, and the like. The drilling well is widely applied to national economic construction, and the rotary disc drilling well is widely used in oil (gas) fields in China at present. The main equipment comprises a derrick, an operation platform, a diesel engine, a drilling rig, a drilling tool, a slurry pump, a generator, test equipment, a fuel oil tank, a boiler and the like;

when the existing flow restrictor flows into mud, the front end of the existing flow restrictor is of an open structure, so that large stones are clamped into the flow restrictor in the drilling process of the drilling device, the mud enters the flow restrictor to be blocked, the inflow of the mud is further influenced, and meanwhile, when large particles are accumulated, the mud is easily extruded and damaged by the pulser, the use of the rotary guide device is further influenced, and the drilling efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rotary steering device for drilling rig solves great particulate matter and blocks up the current limiter and make the problem of damage, utilizes the more accurate purpose of the pressure pulse that produces when mud flows through current limiting device.

The utility model discloses a following technical scheme realizes:

a rotary guide device for well drilling apparatus is composed of a main body of well drilling guide unit consisting of a mud tube with screw thread at its front end, a flow-limiting unit for limiting the flow of mud, a pulse wave generated by the pressure pulse generated by mud flowing through the flow-limiting unit, an external sleeve tube connected to the external wall of mud tube and connected to said mud tube, and a casing tube with spiral blades and filter holes axially arranged on the surface of spiral blades and connected to the internal surface of mud tube, be the antiport between helical blade and the outer tube to with the separation of great particulate matter in the outer end under the effect of filtration hole, and through helical blade for the retrograde rotation of well drilling guider main part, make great granule be discharged by helical blade all the time, make mud enter into inside the mud circulation pipe through filtering the hole simultaneously. The specific implementation mode is as follows:

firstly, the outer sleeve is sleeved on the outer surface of the mud flow through pipe, the roller groove is matched with the rolling ball, the rotation of the outer sleeve is convenient, the threaded joint is in threaded connection with the front end part of the drilling guide device main body, then, in the rotation process of the outer sleeve, the mud pipe and the geology are in a relatively fixed structure, the inner part of the outer sleeve is provided with a helical blade which is in fit rotation with the inner wall of the outer sleeve, therefore, in the rotation process of the outer sleeve, the helical blade and the outer sleeve reversely rotate, larger particles are separated at the outer end under the action of the filter hole, and the helical blade reversely rotates relative to the drilling guide device main body, so that the larger particles are always discharged by the helical blade, meanwhile, mud enters the mud flow through pipe through the filter hole, the blockage caused by the larger particles is avoided, and the damage of the flow limiting device is reduced.

The outer sleeve comprises a plurality of roller grooves which are arranged on the inner wall in an annular mode and are uniformly arranged in the axial direction, the mud flow pipe comprises a plurality of rolling balls which are arranged on the outer wall in a rotating mode and rotate with the roller grooves in the radial direction, the rolling balls are connected with the roller grooves in a rolling mode, the rotating effect is better, and the effect influenced by mud is smaller; the mud runner pipe is kept away from screwed joint one end outer tube and is advanced the thick liquid mouth inner wall and offset, avoids the great particulate matter in the mud liquid to enter into seam crossing.

The caliber of the front end of the outer sleeve is the same as the inner diameter of the mud flow through pipe, the aperture of the mud inlet is kept the same, and mud can conveniently enter the mud flow through pipe; the mud circulation pipe comprises a threaded joint which is integrally formed and is in threaded connection with the front end of the drilling guide device main body, the mud circulation pipe is convenient to disassemble and assemble through the threaded joint, and meanwhile, the thread direction of the threaded joint is opposite to the rotating direction of the drilling guide device main body, so that the mud circulation pipe is prevented from being separated in the rotating process of the drilling guide device main body.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model discloses utilize the outer tube to rotate the in-process, be in relatively fixed structure between mud pipe and the geology, helical blade and outer tube relatively reverse rotation for bigger granule is discharged by helical blade all the time, makes mud enter into mud through filtering the hole simultaneously and flows the inside of siphunculus, has avoided bigger particulate matter to cause the jam, reduces the damage of current limiting device;

2. the utility model discloses a screwed joint and the threaded connection of guider main part front end, the later stage dismouting maintenance of the mud runner pipe of being convenient for.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic view of the installation structure of the present invention;

FIG. 2 is a schematic view of the outer sleeve in cooperation with a slurry flow pipe;

FIG. 3 is an exploded view of the outer sleeve and the slurry flow pipe;

FIG. 4 is a schematic cross-sectional view of an outer sleeve and a slurry flow tube;

fig. 5 is a schematic view of the structure of the slurry flow pipe.

Reference numbers and corresponding part names in the drawings:

100-drilling guide device body, 110-outer sleeve, 111-helical blade, 112-filtering hole, 113-roller groove, 120-mud flow pipe, 121-rolling ball and 122-threaded joint.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example (b):

as shown in fig. 1 to 5, the embodiment includes a drilling guide device main body 100, the drilling guide device main body 100 includes a mud flow pipe 120 with a front end connected by a thread, during the drilling guide process, mud enters the flow limiting device through the mud flow pipe 120, and pulse waves are generated by pressure changes caused by pressure pulses generated when mud flows through the flow limiting device, an outer sleeve 110 is connected to the outer wall of the mud flow pipe 120 in a rotating manner, the outer sleeve 110 is connected to the mud flow pipe 120 in a rotating manner, during the rotation of the outer sleeve 110, the mud pipe 120 and the geology are in a relatively fixed structure, the outer sleeve 110 includes a helical blade 111 opposite to the rotation direction of the drilling guide device main body 100, a plurality of filtering holes 112 are axially formed on the surface of the helical blade 111, the helical blade 111 rotates in a manner of being attached to the inner wall of the mud flow pipe 120, the helical blade 111 rotating in a manner of being attached to the inner wall of the outer sleeve 110 is disposed inside the outer sleeve 110, therefore, during the rotation of the outer casing 110, the helical blades 111 and the outer casing 110 rotate in opposite directions, and the larger particles are blocked at the outer end by the filter holes 112, and are discharged by the helical blades 111 all the time through the reverse rotation of the helical blades 111 relative to the drill guide body 100, and simultaneously, the mud enters the mud flow pipe 120 through the filter holes 112.

The specific implementation mode is as follows:

firstly, the outer sleeve 110 is sleeved on the outer surface of the slurry flow pipe 120, the roller groove 113 is matched with the rolling ball 121, the rotation of the outer sleeve 110 is facilitated, the threaded joint 122 is in threaded connection with the front end part of the drilling guide device main body 100, then, in the rotation process of the outer sleeve 110, the slurry pipe 120 and the geology are in a relatively fixed structure, the inner part of the outer sleeve 110 is provided with the helical blade 111 which is attached to the inner wall of the outer sleeve 110 to rotate, in the rotation process of the outer sleeve 110, the helical blade 111 and the outer sleeve 110 rotate reversely, larger particles are blocked at the outer end under the action of the filter hole 112, and the helical blade 111 rotates reversely relative to the drilling guide device main body 100, so that the larger particles are discharged by the helical blade 111 all the time, and simultaneously, slurry enters the slurry flow pipe 120 through the filter hole 112, thereby avoiding the blockage caused by the larger particles, the damage of the current limiting device is reduced.

Preferably, the outer sleeve 110 comprises a plurality of roller grooves 113 which are arranged on the inner wall in a ring mode and are uniformly arranged in the axial direction, the slurry circulating pipe 120 comprises a plurality of rolling balls 121 which are arranged on the outer wall in a ring mode and rotate in the radial direction of the roller grooves 113, and the rolling balls 121 are in rolling connection with the roller grooves 113, so that the rotating effect is better, and the effect influenced by slurry is smaller; the mud flowing pipe 120 is far away from the inner wall of the mud inlet of the outer sleeve 110 at one end of the threaded joint 122, so that larger particles in mud can be prevented from entering the joint.

Preferably, the caliber of the front end of the outer sleeve 110 is the same as the inner diameter of the slurry flow pipe 120, the aperture of the slurry inlet is kept the same, and the slurry can conveniently enter the slurry flow pipe 120; the mud flow pipe 120 includes a screw joint 122 integrally formed to be screw-coupled to the front end of the drill guide body 100, and the screw joint 122 facilitates the assembly and disassembly of the mud flow pipe 120, and the screw direction of the screw joint 122 is opposite to the rotation direction of the drill guide body 100, thereby preventing the mud flow pipe 120 from being separated during the rotation of the drill guide body 100.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A rotary steerable assembly for a drill string, comprising a drill guide body (100), characterized by: the drilling guide device comprises a drilling guide device body (100) and is characterized in that the drilling guide device body (100) comprises a mud circulating pipe (120) with the front end in threaded connection, the outer wall of the mud circulating pipe (120) is rotatably connected with an outer sleeve (110), the outer sleeve (110) comprises a helical blade (111) opposite to the rotating direction of the drilling guide device body (100) and a plurality of filter holes (112) axially formed in the surface of the helical blade (111), and the helical blade (111) is attached to the inner wall of the mud circulating pipe (120) to rotate.

2. A rotary guide device for a drill well as claimed in claim 1, wherein: the outer sleeve (110) comprises a plurality of roller grooves (113) which are arranged on the inner wall in a ring mode and are uniformly arranged in the axial direction.

3. A rotary guide device for a drill well as claimed in claim 1, wherein: the slurry circulating pipe (120) comprises a plurality of rolling balls (121) which are arranged on the outer wall in a ring mode and rotate, and the rolling balls and the roller groove (113) rotate in the radial direction.

4. A rotary guide device for a drill well as claimed in claim 1, wherein: the caliber of the front end of the outer sleeve (110) is the same as the inner diameter of the slurry circulating pipe (120).

5. A rotary guide device for a drill well as claimed in claim 1, wherein: the mud flow pipe (120) includes a threaded connector (122) integrally formed with the front end of the drill guide body (100).

6. A rotary guide device for a drill well as claimed in claim 1, wherein: the mud circulating pipe (120) is far away from the inner wall of the mud inlet of the outer sleeve (110) at one end of the threaded joint (122).

7. A rotary guide device for a drill well according to claim 5, wherein: the thread direction of the threaded joint (122) is opposite to the rotation direction of the drill guide main body (100).