阅读说明：本技术 一种井下钻头及其使用方法 (A kind of downhole drill bit and its application method ) 是由 王建华 张瑞 沙涛 王剑 巫斌伟 张涛 梁鹏 计生卿 常力文 雷永飞 潘冬升 于 2019-09-27 设计创作，主要内容包括：本申请涉及一种井下钻头和使用井下钻头的使用方法。所述井下钻头用于在煤系地层中钻孔,包括钻头主体和设置在所述钻头主体侧面的刀翼,钻头主体包括依基座和钻筒,基座的一端与钻筒固定连接,基座的另一端与外部驱动装置相连接,钻筒的侧面开设有通孔,钻筒在远离钻头主体的端部设有钻刀,钻筒的端部设有第一冲洗孔,在通孔内部,靠近基座的一端设有旋转装置,沿刀翼向外旋转的方向,刀翼的侧面上设有第二冲洗孔,旋转装置铰接于钻筒的内壁,旋转装置用于控制刀翼从通孔内向外旋转,以便到达指定位置。采用本申请的结构和使用方法可解决使钻头在工作过程中避免因高温和冲击摩擦造成的钻刀和刀翼的开裂的问题发生。(This application involves a kind of downhole drill bit and use the application method of downhole drill bit.The downhole drill bit in coal measure strata for drilling, including drill main body and the wing that the drill main body side is arranged in, drill main body includes according to pedestal and drilling pipe, one end of pedestal is fixedly connected with drilling pipe, the other end of pedestal is connected with external driver device, the side of drilling pipe offers through-hole, drilling pipe is equipped with drill in the end far from drill main body, the end of drilling pipe is equipped with the first flushing hole, inside through-hole, rotating device is equipped with close to one end of pedestal, along the direction that wing rotates outward, the side of wing is equipped with the second flushing hole, rotating device is articulated with the inner wall of drilling pipe, rotating device is rotated for controlling wing from through-hole from inside to outside, to reach designated position.The cracking generation of drill and wing caused by avoiding drill bit during the work time because of high temperature and impact friction can be solved the problems, such as using the structure and application method of the application.)

1. a kind of downhole drill bit characterized by comprising drill main body (1) and setting the drill main body (1) side knife The wing (2), wherein

The drill main body (1) includes sequentially connected pedestal (11) and drilling pipe (12)；The pedestal (11) and the drilling pipe (12) be hollow cylinder structure, one end of the pedestal (11) is fixedly connected with drilling pipe (12), the pedestal (11) it is another End is connected with external driver device (3), and the external driver device (3) radially rotates for controlling the pedestal (11)； The side of the drilling pipe (12) offers through-hole (121), and the drilling pipe (12) is equipped in the end far from the drill main body (1) Drill (122), the drill (122) are used for before digging reaming, and the drill main body (1) is embedded in target position, described The end of drilling pipe (12) is equipped with the first flushing hole (125), and first flushing hole (125) is by water flow to the drill (122) Cooling and cleaning；

Internal in the through-hole (121), one end close to the pedestal (11) is equipped with rotating device (123), the rotating device (123) it is connected with the end of the wing (2), the length of the wing (2) is less than the through-hole (121) along the drilling pipe (12) axial length, along the direction that the wing (2) rotates outward, the side of the wing (2) is equipped with the second flushing hole (22), second flushing hole (22) is cooled down and is cleaned to the wing (2) by water flow, and the rotating device (123) is hinged Inner wall in drilling pipe (12), the rotating device (123) is for controlling the wing (2) out of the through-hole (121) to outward turning Turn, to reach designated position.

2. downhole drill bit according to claim 1, which is characterized in that the side that the wing (2) is in contact with coal mine Face edge is welded with the first abrasionproof alloy (21), and the first abrasionproof alloy (21) is cylindrical structure.

3. downhole drill bit according to claim 1, which is characterized in that the drill (122) is radial in the drilling pipe (12) The lateral edge of rotation direction is welded with the second abrasionproof alloy (124), and the second abrasionproof alloy (124) is cylindrical structure.

4. downhole drill bit according to claim 1, which is characterized in that the rotation angle of the wing (2) is 0 ° -90 °.

5. downhole drill bit according to claim 1, which is characterized in that the pedestal (11) is whole with the drilling pipe (12) Formula structure.

6. downhole drill bit according to claim 1, which is characterized in that the wing (2) is with the rotating device (122) Monolithic construction.

7. downhole drill bit according to claim 1, which is characterized in that length side of the wing (2) along the wing (2) To width be gradually reduced.

8. the application method of downhole drill bit described in a kind of any one of claim 1~7 characterized by comprising

External driver device (3) is fixedly connected by step 1 with pedestal (11), and external drive equipment (3) send drill main body (1) Enter default hole location；

Step 2 is passed through water flow, and one direction slowly rotates the drill main body (1), applies the drill main body (1) advance pressure Power, until the drill main body (1) reaches target position；

Start rotating device (122), the wing (2) is waited to rotate outward from the inside of the drill main body (1), until described Axis of the axis of wing (2) perpendicular to the drill main body (1)；

Step 3 starts external driver device (3), rotates drill main body (1) radially, to the drill main body (1) along diameter To rotation, reaming cutting operation is completed；

Step 4, the drill main body (1) reach default underground depth, stop supplying water, and the drill main body (1) is pressed former direction and turned Dynamic to withdraw, the wing (2) is taken in the through-hole (121) in the case where withdrawing effect, and the drill main body (1) is removed from drilling Out.

Technical field

The application belongs to coal mine drilling field, more particularly, to a kind of downhole drill bit and its application method.

Background technique

In coal mining operation, reaming cutting is carried out using drill bit to coal measure strata, reaming to certain depth judges again The density and bedding plane structure of coal measure strata design further cutting scheme.

During coal measure strata reaming is dug, because of coal measure strata high rigidity feature, with carbide bit Drill bit can be widely used because of its superior wear-resisting property and good operating efficiency, traditional drill bit include multiple groups drill with And the carbide bit in drill is set, it is generally the case that carbide bit can cover the cut surface of drill, and drill bit is made Drill and carbide bit can impact coal measure strata simultaneously when industry, in the higher coal measure strata of impact hardness, drill bit meeting Amount of heat is generated, under high temperature environment, the huge friction operation of drill is easy to appear the phenomenon that drill cracks, and affects drill bit Reaming efficiency and service life.

Summary of the invention

To overcome in above-mentioned coal mining operation, drill bit existing defect under high temperature environment, the application skill to be solved Art problem is to provide a kind of can be effectively reduced and generates high temperature because impacting and rubbing, and avoids the problem that cracking occur in drill and wing Drill bit and drill bit application method.

In order to solve the above technical problems, the downhole drill bit of the application includes drill main body and drill main body side is arranged in Wing, wherein drill main body includes sequentially connected pedestal and drilling pipe；Wherein, pedestal and drilling pipe are hollow cylinder structure, base One end of seat is fixedly connected with drilling pipe, and the other end of pedestal is connected with external driver device, and external driver device is for controlling Pedestal processed radially rotates；The side of drilling pipe offers through-hole, and drilling pipe is equipped with drill in the end far from drill main body, and drill is used In before digging reaming, the drill main body is embedded in target position, the end of drilling pipe is equipped with the first flushing hole, and first rinses Hole is cooled down and is cleaned to drill by water flow；Inside through-hole, rotating device, rotating device and knife are equipped with close to one end of pedestal The end of the wing is connected, and the length of wing is less than through-hole along the length of drilling pipe axial direction, along the direction that wing rotates outward, wing Side is equipped with the second flushing hole, and the second flushing hole is cooled down and cleaned to wing by water flow, and rotating device is articulated with drilling pipe Inner wall, rotating device is rotated for controlling wing from through-hole from inside to outside, to reach designated position.

Optionally, the lateral edge that wing is in contact with coal mine is welded with the first abrasionproof alloy, the first abrasionproof alloy For cylindrical structure.

Optionally, lateral edge of the drill in drilling pipe radial rotating direction is welded with the second abrasionproof alloy, and second is anti- Adjustment gold is cylindrical structure.

Optionally, the rotation angle of wing is 0 ° -90 °.

Optionally, pedestal and the drilling pipe are monolithic construction.

Optionally, wing and rotating device are monolithic construction.

Optionally, wing is gradually reduced along wing length direction width.

The application method of the downhole drill bit of the application includes:

External driver device is fixedly connected by step 1 with pedestal, and drill main body is sent into preset hole by external drive equipment Position.

Step 2 is passed through water flow, and one direction slowly rotates the drill main body, applies drill main body advance pressure, until The drill main body reaches target position；

Start rotating device, wing is waited to rotate outward from the inside of drill main body, until the axis of wing is perpendicular to brill The axis of head main body；

Step 3 starts external driver device, rotates drill main body radially, radially rotate to drill main body, complete At reaming cutting operation；

Step 4, drill main body reach default underground depth, stop supplying water, drill main body is withdrawn by the rotation of former direction, knife The wing is taken in through-hole in the case where withdrawing effect, and drill main body is withdrawn from from drilling.

From the above technical scheme, including drill main body and the wing that the drill main body side is arranged in, drill bit master Body includes: pedestal, and drilling pipe, through-hole, drill, the first flushing hole, the wing includes: rotating device, the second flushing hole.Wing with The lateral edge that coal mine is in contact welds the first abrasionproof alloy, and lateral edge of the drill in drilling pipe radial rotating direction welds second Abrasionproof alloy, in addition, wing is equipped with the second flushing hole, drilling pipe is equipped with the first flushing hole, effectively reduces drill bit in this way Generate high temperature because impacting and rubbing in rotary course, avoid drill main body in boring procedure drill and wing cracking ask Topic occurs, and then promotes the drivage efficiency of drill bit.

Detailed description of the invention

In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also Other drawings may be obtained according to these drawings without any creative labor.

Fig. 1 is the application drill main body structural schematic diagram；

Fig. 2 is drill main body structural schematic diagram of the application without wing；

Fig. 3 is the application drill main body side schematic view；

Fig. 4 is the application pedestal schematic diagram.

It illustrates: 1- drill main body, 2- wing, 11- pedestal, 12- drilling pipe, 121- through-hole, 122- drill, 123- rotation Device, 124- the second abrasionproof alloy, the first flushing hole of 125-, 21- the first abrasionproof alloy, the second flushing hole of 22-.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Whole description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall in the protection scope of this application.

On the one hand, as shown in Figure 1, the application provides a kind of downhole drill bit, including drill main body 1 and setting in drill main body The wing 2 of 1 side, wherein the drill main body 1 includes sequentially connected pedestal 11 and drilling pipe 12；The pedestal 11 and described Drilling pipe 12 is hollow cylinder structure, and one end of the pedestal 11 is fixedly connected with the drilling pipe 12, the pedestal 11 it is another End is connected with external driver device 3, as shown in Figure 4, it is preferred that the external driver device 3 uses spiral shell with the pedestal 11 The mode connect is connected and fixed, and the external driver device 3 is radially rotated for controlling the pedestal 11；

As shown in Fig. 2, the side of the drilling pipe 12 offers through-hole 121, the drilling pipe 12 is far from the drill main body 1 End be equipped with drill 122, the drill 122 be used for before digging reaming, by the drill main body 1 insertion target position, The end of the drilling pipe 12 is equipped with the first flushing hole 125, and first flushing hole 125 cools down to the drill 122 by water flow And cleaning；Inside the through-hole 121, rotating device 123, the rotating device 123 are equipped with close to one end of the pedestal 11 It is connected with the end of the wing 2, the rotating device 123 plays position-limiting action simultaneously, so that the wing 2 rotates outward Maximum angle be 90 °, drilling can keep default maximum diameter of hole, and it is axial along drilling pipe 12 that the length of wing 2 is less than through-hole 121 Length, along the direction that wing 2 rotates outward, the side of wing 2 is equipped with the second flushing hole 22, and the second flushing hole 22 passes through water flow Cool down to wing 2 and clean, rotating device 123 is articulated with the inner wall of drilling pipe 12, and rotating device 123 is for controlling wing 2 from logical Hole 121 rotates from inside to outside, to reach designated position.It can ensure to drill with constant aperture using the above structure, drill During reduce drill bit in coal measure strata because impact friction generate temperature opened so as to avoid drill 122 and wing 2 The problem of splitting, in addition in boring procedure, the first flushing hole 125 and the second flushing hole 22 keep clear to drill 122 and wing 2 It is clean, improve drill bit drivage efficiency.

The lateral edge that the wing 2 is in contact with coal mine is welded with the first abrasionproof alloy 21, the first abrasionproof alloy 21 be cylindrical structure, and the abrasion resistant effect of the wing 2 can be improved using the first abrasionproof alloy 21, extends the wing 2 Service life, the first abrasionproof alloy 21 are set as cylindrical structure and are arranged in the side that the wing 2 is in contact with coal mine Edge increases the bite force and frictional force of the wing 2 and coal mine, improves the drivage efficiency of downhole drill bit.

Lateral edge of the drill 122 in the 12 radial rotating direction of drilling pipe is welded with the second abrasionproof alloy 124, institute Stating the second abrasionproof alloy 124 is cylindrical structure, and the wear-resisting effect of the drill 122 can be improved using the second abrasionproof alloy 124 Fruit, extends the service life of the drill 122, and the second abrasionproof alloy 124 is set as cylindrical structure and is arranged in the drill 122 Lateral edge along the 12 radial rotating direction of drilling pipe increases the bite force and frictional force of the drill 122 and coal mine, mentions The high drivage efficiency of downhole drill bit.

As shown in figure 3, the rotation angle of the wing is 0 ° -90 °, it is ensured that the drill bit is maximum pre- in boring procedure Apertured diameter.

The pedestal and the drilling pipe are monolithic construction.Ensure the control underground that the external driver device 3 can be stable Drill bit carries out bore operation.

The wing 2 is monolithic construction with the rotating device 123.Avoid the wing 2 and the rotating device 123 90 ° cannot be maintained at because loosening causes the wing 2 to rotate angle.

The wing 2 is gradually reduced along 2 length direction width of wing.Appropriateness reduces contact of the wing 2 with coal mine Area improves the rotational efficienty of the wing 2.

On the other hand, the application method of the downhole drill bit of the application comprises the following steps:

External driver device 3 is fixedly connected by step 1 with pedestal 11, and drill main body 1 is sent into pre- by external driver device 3 Apertured position.

Step 2 is passed through water flow, and one direction slowly rotates the drill main body 1, applies 1 advance pressure of drill main body, directly Reach target position to the drill main body 1；

Start rotating device 122, wing 2 is waited to rotate outward from the inside of drill main body 1, until the axis of wing 2 hangs down Directly in the axis of drill main body 1；

Step 3 starts external driver device 3, rotates drill main body 1 radially, radially rotate to drill main body 1, Complete reaming cutting operation；

Step 4, drill main body 1 reach default underground depth, stop supplying water, and drill main body 1 is withdrawn by the rotation of former direction, Wing 2 is taken in through-hole 121 in the case where withdrawing effect, and drill main body 1 is withdrawn from from drilling.

It should be noted that the words such as " first " " second " that the application is stated, are not the limitations to specific order, only It is merely for distinguishing all parts or function.Detailed description and exemplary example is combined to carry out in detail the application above Describe in detail bright, but these explanations can not be interpreted as limitation to the application.It will be appreciated by those skilled in the art that without departing from this Shen Please in the case where spirit and scope, technical scheme and embodiments thereof can be carried out a variety of equivalencings, modification or It improves, these each fall in scope of the present application.The protection scope of the application is determined by the appended claims.