Rotary self-advancing spray head
Technical Field
The utility model relates to a drilling tool technical field specifically is a rotatory formula shower nozzle of advancing.
Background
The unconventional oil gas resources such as coal bed gas, shale gas, compact sandstone oil gas and the like in China are rich, and the development prospect is good. Unconventional oil and gas resource development is listed in the important development plan of 'twelve five' in China. The radial horizontal well is drilled by breaking rock by water jet, one or more radially distributed tiny boreholes are drilled along the radius direction of the boreholes, the characteristics of high-pressure water jet are fully exerted, and the radial horizontal well drilling device has incomparable effects on improving the pressure distribution of an oil-gas reservoir, increasing the oil-gas recovery ratio and the single-well yield by other technologies. The hydraulic jet radial sidetracking micro well bore technology is a new method with bright technical characteristics developed in recent years and has wide development and application potential in unconventional oil and gas resource exploitation. The technology is mainly carried out in two steps, wherein in the first step, an oil pipe is used for lowering a steering gear to a preset well depth for fixing, then a coiled tubing is used for lowering a small-size well bottom power drilling tool, a mechanical nozzle with a universal joint is used for opening a circular window with the diameter of 20-30 mm in a sleeve through the steering gear, and the drilling tool is lifted out; and secondly, a jet flow nozzle is arranged in the well through a high-pressure hose and a continuous pipe, and the well is drilled in the stratum through a diverter and a drilled casing pipe window by utilizing the rock breaking action of jet flow. However, there are still many problems to be solved in the art, and key technical problems to be solved in the art include: (1) the existing jet flow nozzle has weak reaming capability or unsmooth rock breaking hole and poor roundness; (2) the jet flow nozzle has insufficient self-advancing force, so that the preset position cannot be drilled; (3) the drilling track of the hydraulic jet hose is bent and is difficult to control.
The high-performance jet flow nozzle is designed to solve the problems that the reaming capability of the jet flow nozzle is not strong, the smoothness and roundness of a broken rock hole are poor, the self-feeding force of the jet flow nozzle is insufficient, the track of a hydraulic jet hose is bent and the like in the hydraulic jet radial sidetracking micro well bore technology. At present, several types of jet flow spray head design schemes are available at home and abroad, but indoor tests and field application find that the spray heads cannot thoroughly solve the key problems, and have the defects of insufficient reaming capability, poor smoothness of a rock breaking hole, large length and diameter of the whole device, incapability of passing through a steering gear, easiness in blocking and blockage in complex strata and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rotatory formula shower nozzle of advancing has solved the problem that proposes among the background art.
In order to achieve the above object, the utility model provides a following technical scheme: a rotary self-propelled nozzle mainly comprises a nozzle body, a turbine and a rotary nozzle body, wherein the nozzle body consists of a thread, a backward nozzle, a flow guide port, a central shaft and a bearing groove; the turbine consists of blades, a turbine shell and a key groove; the rotary spray head body consists of a central hole, a forward nozzle, a rotary spray head body shell and a bearing groove; the tail end of the spray head body is provided with a thread, and a backward nozzle is fixed above the thread; a flow guide opening is machined in the spray head body, a central shaft is machined above the flow guide opening, and a bearing groove is formed around the flow guide opening; the center of the turbine is a hollow cylinder, and a key groove is processed on the turbine shell; the rotary spray head body is provided with a forward spray nozzle and a central hole, and a bearing groove is formed around the central hole; the central shaft of the nozzle body penetrates through the center of the turbine and the central hole of the rotary nozzle body and is fixed by a nut; the turbine is assembled by a key groove and a rotary spray head body; and the rotary spray head body is connected with the spray head body and the nut through bearings.
As a preferred embodiment of the present invention, four flow guide ports are formed in the sprinkler body, six backward nozzles are arranged below the flow guide ports, the spray angle is 20 ° to 40 °, and the nozzles are uniformly distributed around the outer shell of the rotary sprinkler body, the water outlets of the backward nozzles are all located on the same cross section of the outer shell of the rotary sprinkler body, and the central shaft is installed on the center of the flow guide port; and a bearing is fixed on the side surface of the flow guide opening.
As a preferred embodiment of the present invention, the turbine passes through the center shaft, and the outer groove of the turbine center is connected to the rotary nozzle body by a key groove.
As a preferred embodiment of the present invention, a turbine is installed outside the rotary nozzle body.
As a preferred embodiment of the present invention, the forward nozzles are set to four in total, and the opening direction of the forward nozzles is determined as follows: the method comprises the following steps of firstly deflecting a certain angle by taking the axis of a central nozzle as a reference, setting the angle as alpha, defining the position at the moment as a first dotted line, defining a plane where the first dotted line and the axis of the central nozzle are located as a first plane, defining a plane which is perpendicular to the first plane and has an intersection line as the first dotted line as a second plane, then deflecting the first dotted line in the second plane by a certain angle, setting the angle as beta, defining the deflected position as a second dotted line, and arranging a forward nozzle on a hemisphere along the second dotted line or a position parallel to the second dotted line; the alpha is 15-50 degrees, and the beta is 15-50 degrees; when the opening directions of the plurality of forward nozzles are determined, the first dotted lines deflect towards the same side in the second set plane.
As an optimized embodiment of the present invention, the bottom of the rotary sprayer body is connected to the sprayer body through a bearing, and the front end of the rotary sprayer body is fixed to the bearing through a nut.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a preceding nozzle is seted up on the sprinkler body according to certain position angle, can make the sprinkler body wind self rotation under the effect of high-pressure water jet, is favorable to improving broken rock punchhole circularity, reinforcing reaming ability turns into the anti-power of spouting that originally is the resistance simultaneously and effectively promotes the means of fluidic sprinkler self-advancing. In addition, after the jet flow spray head rotates, the stability of the spray head can be improved, and the drilling track is guaranteed to be straight.
2. The utility model discloses a rotatory back of jet sprayer makes preceding nozzle intermittent type nature impact rock, has pulse jet characteristic, can improve broken rock speed.
3. The utility model discloses the structure is simple relatively, and application prospect is wide.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is an overall sectional view of a rotary self-propelled nozzle of the present invention;
FIG. 2 is a cross-sectional view of a nozzle body of a rotary self-propelled nozzle of the present invention;
FIG. 3 is a cross-sectional view of a rotary sprinkler body of a rotary self-propelled sprinkler of the present invention;
FIG. 4 is a three-dimensional view of a turbine of the rotary self-propelled nozzle of the present invention;
FIG. 5 is a three-dimensional view of a nozzle body of a rotary self-propelled nozzle of the present invention;
fig. 6 is a three-dimensional view of a rotary nozzle body of the rotary self-propelled nozzle of the present invention.
In the figure: 1. a nozzle body; 2. a turbine; 3. rotating the spray head body; 4. a nut; 5. a bearing; 6. a thread; 7. a backward nozzle; 8. a bearing groove; 9. a flow guide port; 10. a central shaft; 11. rotating the nozzle body housing; a forward nozzle; 13. a central bore; 21. a blade; 22. a turbine shell; 23. a keyway.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "disposed" are to be construed broadly, and may for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-6, the present invention provides a technical solution: a rotary self-propelled nozzle mainly comprises a nozzle body 1, a turbine 2 and a rotary nozzle body 3, wherein the nozzle body 1 consists of a thread 6, a backward nozzle 7, a diversion port 9, a central shaft 10 and a bearing groove 8; the turbine 2 consists of blades 21, a turbine shell 22 and a key groove 23; the rotary spray head body 3 consists of a central hole 13, a forward nozzle 12, a rotary spray head body shell 11 and a bearing groove 8; the tail end of the spray head body 1 is provided with a thread 6, and a backward nozzle 7 is fixed above the thread 6; a flow guide opening 9 is formed in the spray head body 1, a central shaft 10 is formed above the flow guide opening 9, and a bearing groove 8 is formed around the flow guide opening 9; the center of the turbine 2 is a hollow cylinder, and a key groove 23 is processed on a turbine shell 22; a forward nozzle 12 and a central hole 13 are arranged on the outer side of the rotary spray head body 3, and a bearing groove 8 is formed around the central hole 13; a central shaft 10 of the nozzle body 1 penetrates through the center of the turbine 2 and a central hole of the rotary nozzle body 3 and is fixed by a nut 4; the turbine 2 is assembled by the key slot 23 and the rotary spray head body 3; the rotary head body 3 is connected to the head body 1 and the nut 4 by a bearing 5.
The sprayer comprises a sprayer body 1, a rotary sprayer shell 11, a central shaft 10, a plurality of water outlets and a plurality of back nozzles 7, wherein the sprayer body 1 is internally provided with four flow guide ports 9, the six back nozzles 7 are arranged below the flow guide ports 9, the spraying angle is 20-40 degrees and are uniformly distributed on the periphery of the rotary sprayer shell 11, the water outlets of the back nozzles 7 are all positioned on the same cross section of the rotary sprayer shell 11, and the central shaft 10 is arranged in the center of the flow; and a bearing 5 is fixed on the side surface of the flow guide opening 9.
Wherein, the turbine 2 passes through the central shaft 10, and the outer groove of the center of the turbine 2 is connected with the rotary spray head body 3 by a key groove 23.
Wherein, the turbine 2 is arranged outside the rotary spray head body 3.
The number of the forward nozzles 12 is four, and the opening direction of the forward nozzles 12 is determined as follows: the method comprises the following steps of firstly deflecting a certain angle by taking the axis of a central nozzle as a reference, setting the angle as alpha, defining the position at the moment as a first dotted line, defining a plane where the first dotted line and the axis of the central nozzle are located as a first plane, defining a plane which is perpendicular to the first plane and has an intersection line as the first dotted line as a second plane, then deflecting the first dotted line in the second plane by a certain angle, setting the angle as beta, defining the deflected position as a second dotted line, and arranging a forward nozzle on a hemisphere along the second dotted line or a position parallel to the second dotted line; the alpha is 15-50 degrees, and the beta is 15-50 degrees; when the opening directions of a plurality of the forward nozzles 12 are determined, the dotted lines I are deflected towards the same side in the set plane II.
The bottom of the rotary sprayer body 3 is connected with the sprayer body 1 through a bearing 5, and the front end of the rotary sprayer body 3 is fixedly installed through a nut 4 and the bearing 5.
When the rotary self-advancing type spray head is used, in the operation process of hydraulic jet radial sidetracking micro well bores, high-pressure drilling fluid enters the spray head device from the continuous pipe, and a part of drilling fluid is sprayed out from the rear nozzle 7 to provide self-advancing force for the spray head. The remaining high-pressure drilling fluid passes through the diversion opening 9 and then acts on the blades 21 of the turbine 2, so that the turbine 2 rotates, and the high-pressure drilling fluid forms a rotary jet to act on the forward nozzle 12. The turbine 2 is assembled with the rotary sprayer body 3 through the key groove 23, and the turbine 2 rotates to drive the rotary sprayer body 3 to rotate, so that the drilling area is enlarged. In addition, the jet flow spray head body 3 can also enhance the stability of the spray head by rotating, and the straight drilling track is ensured; meanwhile, the reverse spray force of the forward nozzle 12 is reduced by the rotation of the spray head, and the reverse spray force of the original resistance is changed into a means for effectively improving the self-advancing capability of the jet spray head.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.