阅读说明：本技术 一种新型防堵pdc钻头及使用方法 (Novel anti-blocking PDC drill bit and use method ) 是由 孙继光 赵果 王尧军 范玉栋 于 2020-06-06 设计创作，主要内容包括：本发明涉及石油、地质钻头装置技术领域,具体涉及一种新型防堵PDC钻头及其使用方法包括钻头本体和立式钻井泵,所述立式钻井泵包括泵体罩、驱动电机和泵轮,所述驱动电机固定设置在泵体罩的上表面,所述驱动电机的输出轴伸入泵体罩的内腔与泵轮相连接,所述泵体罩的侧面连接有进水管,所述泵体罩的下表面连接有出水管；本发明在旋转空心轴与钻头体之间设置圆筒,圆筒外表面设置螺旋肋条,其螺旋肋条在随钻头体旋转的过程中,其螺旋肋条起到运输螺旋叶的作用,能够将沟道中被冲刷出的岩屑向上方运输,从而快速将岩屑排出,防止岩屑堆积,能够有效防止其钻头体被堵塞,其结构简单,防堵塞效果优异。(The invention relates to the technical field of petroleum and geological drill bit devices, in particular to a novel anti-blocking PDC drill bit and a using method thereof, wherein the novel anti-blocking PDC drill bit comprises a drill bit body and a vertical drilling pump, the vertical drilling pump comprises a pump body cover, a driving motor and a pump wheel, the driving motor is fixedly arranged on the upper surface of the pump body cover, an output shaft of the driving motor extends into an inner cavity of the pump body cover to be connected with the pump wheel, the side surface of the pump body cover is connected with a water inlet pipe, and the lower surface of the pump body cover is connected with; according to the invention, the cylinder is arranged between the rotary hollow shaft and the drill bit body, the spiral ribs are arranged on the outer surface of the cylinder, and the spiral ribs play a role of conveying the spiral blades in the process of rotating along with the drill bit body, so that rock debris flushed out of the channel can be conveyed upwards, the rock debris can be discharged quickly, the rock debris accumulation can be prevented, the drill bit body can be effectively prevented from being blocked, the structure is simple, and the anti-blocking effect is excellent.)

1. The utility model provides a novel prevent stifled PDC drill bit, includes drill bit body (1) and vertical drilling pump (2), its characterized in that, vertical drilling pump (2) are including pump body cover (201), driving motor (202) and pump impeller, driving motor (202) are fixed to be set up at the upper surface of pump body cover (201).

2. The novel anti-blocking PDC drill bit as claimed in claim 1, wherein an output shaft of the driving motor (202) extends into an inner cavity of the pump body cover (201) to be connected with a pump impeller, a water inlet pipe (203) is connected to the side surface of the pump body cover (201), a water outlet pipe (204) is connected to the lower surface of the pump body cover (201), a plurality of lug seats (205) are uniformly arranged on the outer side surface of the pump body cover (201), a fixed bottom plate (206) is arranged under the pump body cover (201), a hydraulic cylinder (207) corresponding to each lug seat (205) is arranged on the upper surface of the fixed bottom plate (206), the top end of the hydraulic cylinder (207) is connected with the lug seats (205), a through hole (208) is formed in the middle of the fixed bottom plate (206), and the water outlet pipe (204) is connected with a multi-section connection high-pressure water pipe (3) which extends into the ground through the, the bottom end of the multi-section type connection high-pressure water pipe (3) is connected with the drill bit body (1);

wherein the drill bit body (1) comprises a drill bit body (101), a rotary hollow shaft (102), a cylinder (103) and a connecting cylinder (104), a water inlet is formed in the top end of the connecting cylinder (104), the multi-section type connection high-pressure water pipe (3) is connected with the water inlet, a drum-shaped partition plate (1041) and a horizontal partition plate (1042) are arranged in the connecting cylinder (104), the drum-shaped partition plate (1041) and the horizontal partition plate (1042) divide the inside of the connecting cylinder (104) into a driving area (1043), a transmission area (1044) and a sewage discharge area (1045), a transmission box (105) is arranged on the outer wall of the connecting cylinder (104) at one side of the driving area (1043) and the transmission area (1044), a turbine blade assembly (106) is arranged in the driving area (1043), and a first gear (107) is arranged at the end part of a rotating shaft at one end of the turbine blade assembly (, the lower end of the transmission box (105) is provided with a second gear (108) meshed with the first gear (107), the second gear (108) is provided with a rotating rod (109) extending into the transmission area (1044), the end part of the rotating rod (109) is connected with a first bevel gear (110), the top end of the rotating hollow shaft (102) penetrates through a drum-shaped partition plate (1041) to be communicated with a driving area (1043), the rotating hollow shaft (102) positioned in the transmission area (1044) is provided with a second bevel gear (111) meshed with the first bevel gear (110), the outer side surface of the rotating hollow shaft (102) positioned in the pollution discharge area (1045) is provided with a plurality of crushing blades (112), a connecting cylinder (104) positioned at the crushing blades (112) is provided with a pollution discharge port (113), and the lower end of the rotating hollow shaft (102) is connected with a cylinder (103), be provided with spiral rib (114) on drum (103) lateral surface, the lower extreme of drum (103) is connected with bit body (101), the lower extreme circumference of bit body (101) is provided with a plurality of cutting pterygoid lamina (115), adjacent two form the channel between cutting pterygoid lamina (115), the surface of cutting pterygoid lamina (115) is inlayed and is had a plurality of cutting teeth (116), be provided with shower nozzle (117) on the side of cutting pterygoid lamina (115), it is three to be provided with ear seat (205) on the lateral surface of pump body cover (201), PMKD (206) are triangle-shaped, just pneumatic cylinder (207) are fixed to be set up in the three corner of PMKD (206).

3. The novel anti-clogging PDC drill bit as claimed in claim 2, wherein shock-absorbing pads (5) are arranged on the lower surfaces of the three corners of the fixed base plate (206).

4. A novel anti-clogging PDC drill bit according to claim 2, characterized in that the outer ends of the outlet pipe (204) and the inlet pipe (203) are provided with connecting flanges (4).

5. The novel anti-blocking PDC drill bit as claimed in claim 2, wherein the multi-section connection high-pressure water pipe (3) is formed by hermetically connecting a plurality of short pipes (301), and the length of each short pipe (301) ranges from 60 cm to 100 cm.

6. The novel anti-clogging PDC drill bit according to claim 2, wherein the number of the crushing blades (112) arranged on the outer side surface of the rotating hollow shaft (102) is three, and the three crushing blades (112) are not arranged on the same horizontal plane.

7. The novel anti-clogging PDC drill bit of claim 2, wherein the seal bearings (118) are arranged at the position where the rotating shaft of the turbine blade assembly (106), the rotating rod (109) penetrate through the connecting cylinder (104) and the position where the rotating hollow shaft (102) penetrates through the horizontal partition plate (1042).

8. The novel anti-blocking PDC drill bit as claimed in claim 2, wherein five cutting wings (115) are arranged on the drill bit body (101), and the width of the channel between the adjacent cutting wings (115) is gradually increased from bottom to top.

9. The novel anti-clogging PDC drill bit of claim 8, wherein two rows of cutting teeth (116) are embedded in both ends of the cutting wing plate (115), and each row of cutting teeth (116) is five.

10. The use method of the novel anti-blocking PDC drill bit according to any one of claims 2 to 9, characterized by comprising the following steps:

s1: selecting and marking the position of a drill hole;

s2: a drilling machine is used for discharging shallow holes, then the drilling machine is removed, and the vertical drilling pump (2) is arranged above the shallow holes;

s3: the lower end of the multi-section connection high-pressure water pipe (3) is connected with the drill bit body (1), then the upper end of the multi-section connection high-pressure water pipe (3) is connected with a water outlet pipe (204) of the vertical drilling pump (2), and meanwhile, a water inlet pipe (203) of the vertical drilling pump (2) is connected with a water source;

s4: the driving motor (202) is started, high-pressure water is injected into the drill bit body (1) through the pump impeller rotating at a high speed and the multi-section connection high-pressure water pipe (3), the high-pressure water drives the pump impeller to rotate, then the drill bit body (101) rotates at a high speed through the left and right transmission among the first gear (107), the second gear (108), the first bevel gear (110) and the second bevel gear (111), the drill hole is drilled through the cutting wing plates (115) and the cutting teeth (116), and meanwhile the drill bit body (1) is pushed into the drill hole through the hydraulic cylinder (207);

s5: and after drilling is finished, taking out the drill bit body (1), and removing the vertical drilling pump (2).

Technical Field

The invention relates to the technical field of petroleum and geological drill bit devices, in particular to a novel anti-blocking PDC drill bit and a use method thereof.

Background

Drill bits are the primary tool for drilling broken rock, and have developed to date into different types and families for different formations and lithologies. Generally, when a drill bit is selected, engineering and geological conditions are considered, and meanwhile economic benefit factors are considered. The PDC drill bit is a polycrystalline diamond compact bit, the existing PDC drill bit which is difficult to block rock debris creeps into a soft stratum and a hard interlayer in a centering mode, and when the drill bit creeps into a high speed, the rock debris generated by cutting teeth is more, and the rock debris is easy to accumulate. At present, because the channels between the blades are parallel to the central axis of the drill bit body, rock debris can be accumulated in the channels in the process of drilling and rotating the drill bit body, so that the rock debris is not easy to discharge, and the rock debris can only be extruded out of the channels along with the increase of the rock debris. In the drilling process, the homogeneous rock debris is not smoothly discharged, so that the resistance of the drill bit during drilling is increased, the drilling speed of the drill bit is influenced, and the continuous friction between the rock debris and the drill bit seriously influences the use conditions of blades and cutting teeth of the drill bit.

The invention with the patent number CN110374517A discloses a novel anti-blocking PDC drill bit, wherein an inner cone and an outer cone both have a certain height, the crown profile adopts the crown profile described by 2, 3, 5 and 6 in the bit section classification table of the International drilling contractor Association, the cutting teeth of the PDC drill bit select phi 19mm to 13mm composite sheets, the PDC drill bit can wash rock debris in the drilling process from the channels through the special design of a nozzle, but when the rock debris above the PDC is accumulated more, the rock debris is difficult to effectively clean up only by jet flow of the nozzle, and the blocking condition still occurs in the actual use process. Therefore, aiming at the defect that the existing PDC is easy to block in the actual use process, the novel anti-blocking PDC drill bit capable of effectively clearing and dredging rock debris in the channel between the two cutting wing plates and the use method thereof are designed to solve the technical problem.

Disclosure of Invention

The invention aims to overcome the defects of the conventional anti-blocking PDC drill bit and designs a novel anti-blocking PDC drill bit capable of effectively cleaning and dredging rock debris in a channel between two cutting wing plates and a using method thereof.

The invention is realized by the following technical scheme:

a novel anti-blocking PDC drill bit comprises a drill bit body and a vertical drilling pump, wherein the vertical drilling pump comprises a pump body cover, a driving motor and a pump wheel, the driving motor is fixedly arranged on the upper surface of the pump body cover, an output shaft of the driving motor extends into the inner cavity of the pump body cover to be connected with the pump impeller, the side surface of the pump body cover is connected with a water inlet pipe, the lower surface of the pump body cover is connected with a water outlet pipe, a plurality of ear seats are uniformly arranged on the outer side surface of the pump body cover, a fixed bottom plate is arranged right below the pump body cover, the upper surface of the fixed bottom plate is provided with a hydraulic cylinder corresponding to each ear seat, the top end of the hydraulic cylinder is connected with the ear seat, the middle of the fixed bottom plate is provided with a through hole, the water outlet pipe is connected with a multi-section type connection high-pressure water pipe which penetrates through the through hole and extends into the ground, and the bottom end of the multi-section type connection high-pressure water pipe is connected with the drill bit body;

wherein, the drill bit body comprises a drill bit body, a rotary hollow shaft, a cylinder and a connecting cylinder, the top end of the connecting cylinder is provided with a water inlet, the multi-section type connecting high-pressure water pipe is connected with the water inlet, a drum-shaped clapboard and a horizontal clapboard are arranged in the connecting cylinder, the drum-shaped clapboard and the horizontal clapboard divide the inside of the connecting cylinder into a driving area, a transmission area and a sewage discharge area, a transmission box is arranged on the outer wall of the connecting cylinder at one side of the driving area and the transmission area, a turbine blade assembly is arranged in the driving area, the end part of a rotating shaft at one end of the turbine blade assembly extends into the transmission box and is provided with a first gear, the lower end of the transmission box is provided with a second gear which is meshed with the first gear, a rotating rod which extends into the transmission area is arranged on the second gear, the end part of the rotating rod is connected with a first conical, be located be provided with the second bevel gear with first bevel gear engaged with on the inside rotating hollow shaft in transmission district, be located be provided with a plurality of broken blades on the inside rotating hollow shaft lateral surface in blowdown district, and be located the drain has been seted up on the connecting cylinder of broken blade department, rotating hollow shaft's lower extreme is connected with the drum, be provided with the spiral rib on the drum lateral surface, the lower extreme of drum is connected with the drill bit, the outer circumference of the lower extreme of drill bit is provided with a plurality of cutting pterygoid lamina, adjacent two form the channel between the cutting pterygoid lamina, the surface of cutting pterygoid lamina is inlayed and is had a plurality of cutting teeth, be provided with the shower nozzle on the side of cutting.

As a further improvement of the above scheme, three lug seats are arranged on the outer side surface of the pump body cover, the fixed base plate is triangular, and the hydraulic cylinders are fixedly arranged at three corners of the fixed base plate.

As a further improvement of the scheme, the lower surfaces of the three corners of the fixed bottom plate are provided with shock absorption pads.

As a further improvement of the scheme, the outer end parts of the water outlet pipe and the water inlet pipe are respectively provided with a connecting flange.

As a further improvement of the scheme, the multi-section type connection high-pressure water pipe is formed by hermetically connecting a plurality of short pipes, and the length range of each short pipe is-cm.

As a further improvement of the above scheme, the number of the crushing blades arranged on the outer side surface of the rotary hollow shaft is three, and the three crushing blades are not arranged on the same horizontal plane.

As a further improvement of the scheme, the sealing bearings are arranged at the position where the rotating shaft and the rotating rod of the turbine blade assembly penetrate through the connecting cylinder and the position where the rotating hollow shaft penetrates through the horizontal partition plate.

As a further improvement of the above scheme, the number of the cutting wing plates arranged on the bit body is five, and the width of the channel between the adjacent cutting wing plates is gradually increased from bottom to top.

As a further improvement of the scheme, two rows of cutting teeth are embedded at two ends of the cutting wing plate, and each row of cutting teeth is five.

The use method of the novel anti-blocking PDC drill bit is characterized by comprising the following steps:

s1: selecting and marking the position of a drill hole;

s2: using a drilling machine to drill a shallow hole, then removing the drilling machine, and installing a vertical drilling pump above the shallow hole;

s3: connecting the lower end of the multi-section connection high-pressure water pipe with the drill bit body, then connecting the upper end of the multi-section connection high-pressure water pipe with a water outlet pipe of the vertical drilling pump, and simultaneously connecting a water inlet pipe of the vertical drilling pump with a water source;

s4: and starting a driving motor, injecting high-pressure water into the drill bit body through a pump impeller rotating at a high speed and a multi-section connection high-pressure water pipe, driving the pump impeller to rotate by the high-pressure water, enabling the drill bit body to rotate at a high speed through transmission among the first gear, the second gear, the first bevel gear and the second bevel gear, drilling the drill bit body through the cutting wing plates and the cutting teeth, and simultaneously pushing the drill bit body into the drilled hole by using a hydraulic cylinder.

S5: and after drilling is finished, taking out the drill bit body, and removing the vertical drilling pump.

Has the advantages that:

1. compared with the prior art, the high-pressure water injected by the vertical drilling pump is used as a power source, the high-pressure water entering the driving area acts on the turbine blade assembly, so that the turbine blade assembly rotates rapidly, the rotating rod rotates through the meshing action between the first gear and the second gear, the drill bit body, the rotary hollow shaft and the cylinder rotate rapidly through the meshing action between the first bevel gear and the second bevel gear, then the cutting teeth on the cutting wing plate can drill holes rapidly, the high-pressure water entering the driving area enters the rotary hollow shaft to be further pressurized, and finally the high-pressure water is sprayed out of the spray head, the spray head is arranged on the side surface of the cutting wing plate, and channel rock debris between the two cutting wing plates can be washed clean; the whole PDC drill bit has the advantages of large power, strong self-cleaning capability and excellent effect.

2. The invention also provides a cylinder between the rotary hollow shaft and the drill bit body, the outer surface of the cylinder is provided with a spiral rib, and the spiral rib plays a role of a conveying spiral blade in the process of rotating along with the drill bit body, so that the rock debris flushed out from the channel can be conveyed upwards, the rock debris can be quickly discharged, the rock debris accumulation can be prevented, the drill bit body can be effectively prevented from being blocked, the structure is simple, and the anti-blocking effect is excellent.

3. The inner part of the connecting cylinder is divided into a driving area, a transmission area and a sewage discharge area, the rotary hollow shaft in the sewage discharge area is provided with a plurality of crushing blades, when rock debris conveyed by the conveying spiral blades enters the sewage discharge area, larger rock debris can be crushed into fine powder debris with uniform size through the crushing effect of the crushing blades in the high-speed rotation process, and finally the fine powder debris is discharged from the sewage discharge port along with the sprayed high-pressure water, so that the whole drill bit body is further facilitated to be dredged, and the rock debris accumulation condition is prevented.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first angular perspective view of the present invention;

FIG. 2 is a second perspective view of the present invention;

FIG. 3 is a plan view of the interior of the connector barrel of the present invention;

FIG. 4 is a perspective view of a bit body, a rotary hollow shaft, and a cylinder according to the present invention;

FIG. 5 is a perspective view of a bit body of the present invention;

FIG. 6 is a perspective view of the connector barrel of the present invention;

FIG. 7 is a perspective view of a turbine blade assembly of the present invention;

fig. 8 is a view showing the internal plan view of the bit body in the present invention.

Wherein, 1-a bit body, 101-a bit body, 102-a rotary hollow shaft, 103-a cylinder, 104-a connecting cylinder, 1041-a drum-shaped clapboard, 1042-a horizontal clapboard, 1043-a driving area, 1044-a transmission area, 1045-a sewage discharge area, 105-a transmission box, 106-a turbine blade component, 107-a first gear, 108-a second gear, 109-a rotating rod, 110-a first bevel gear, 111-a second bevel gear, 112-a crushing blade, 113-a sewage discharge outlet, 114-a spiral rib, 115-a cutting wing plate, 116-a cutting tooth, 117-a spray head and 118-a sealed bearing;

2-vertical drilling pump, 201-pump body cover, 202-driving motor, 203-water inlet pipe, 204-water outlet pipe, 205-ear seat, 206-fixed bottom plate, 207-hydraulic cylinder, 208-through hole;

3-multi-section type connection high-pressure water pipe, 301-short pipe, 4-connecting flange and 5-shock pad.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The novel anti-blocking PDC drill bit of the invention is specifically described with reference to the accompanying drawings 1-8 in combination with the embodiment.