Drill bit and drilling equipment

[0053] Example one

[0054] figure 1 A cross-sectional view of the drill bit provided in this example, figure 2 for figure 1 In the cross-sectional view of A-A, image 3 A first bottom surface structure of the drill bit provided in this embodiment, Figure 4 A second bottom surface structure of the drill bit provided in this embodiment, the combination of the following Figure 1 ~ 4 Specifically, the specific embodiment of the present embodiment will be specifically described.

[0055] This embodiment provides a drill bit, including a drill body 100, a swirling nozzle 200, and a plurality of radial nozzles 300, a mainstream passage 101 having a liquid flow flow in a drill bore body 100, and a plurality of radial nozzle 300 along the drill body 100. The circumferential direction is disposed in the outer edge of the drill body 100, and the radial nozzle 300 is in communication with the main runway 101, and the plurality of radial nozzles 300 are injective in a plurality of tangential direction of the same circle, and the swirl nozzle 200 is in communication with the main runner 101. The swirl nozzle 200 is eccentricly disposed at the bottom of the drill body 100.

[0056] Specifically, the drill body 100 may be any suitable shape and structure, and may, for example, be a cylindrical shape, or a circular stage, of course, may also be other suitable shapes suitable for use within the tube. Preferably, the drill body 100 is a cylindrical shape, and the cylindrical drill body 100 is smaller when rotating around the central axis, thereby making the drill body 100 with a faster rotational speed.

[0057] The mainstream passage 101 having a liquid flow is formed in the drill body 100, the shape and structure of the main flow channel 101, the present embodiment does not specifically define, such as the cross section of the main runway 101 may be circular, or may be elliptical, mainstream The road 101 can be an isometric flow, or may vary the flow channel, in one example, such as figure 1 As shown, the mainstream is composed of two towers, the diameter of the first trine near the drill body 100 is greater than the diameter of the second region away from the drill body 100 into the liquid port. The mainstream 101 can be disposed coaxially with the drill body 100, or may be a non-concealed setting.

[0058] The swirl nozzle 200 is in communication with the main runway 100. The swirl nozzle 200 provided in this embodiment may be any suitable shape and structure, and may be, for example, a cylindrical shape or image 3 The inner wall of the swirl nozzle may be a cylindrical shape or a conical shape may be a cylindrical shape.

[0059] In one example, such as figure 1 As shown, the mainstream passage 101 is inserted with the drill body 100, and the swirl nozzle 200 communicates with the main flow channel 101 by the first communication passage 102, and the first communication passage 102 includes a first connection section and a second linkage section, the first connection section. Vertical is parallel to the main runway 101 perpendicular to the main runner 101. The liquid nozzle 200 can be located figure 1 In the second connection section shown, that is, the swirl nozzle is located inside the second linkage; or the liquid opening of the swirl nozzle 200 can also be located outside the second communication section, that is, part of the swirl nozzle 200 is located in the second communication. During the paragraph; the swirl nozzle 200 is fixed to the second linkage section, for example by a threaded connection, or can also be passed.

[0060] In this example, the eccentric setting of the swirl nozzle 200 is realized by the first connection section and the second connection section. Of course, the structure of the first communication passage 102 is not limited to the structure provided in the present embodiment, for example, the first communication passage 102 may also be a linear conduit, between the central axis of the first communication passage 102 and the central axis of the main track 101 having a clip. The angle is less than 90 °, and may be 30 °, or may be 20 °.

[0061] In another example, the mainstream 101 is not coaxially disposed with the drill body 100, that is, the main runway 101 itself is provided in the drill body 100, and can be mounted directly in the mainstream channel.

[0062] The swirl nozzle 200 provided in this embodiment can be image 3 1 shown, or may be multiple, for example, 3, or may be 5. Alternatively, when the swirl nozzle 200 is plural, the swirl nozzle 200 can be uniformly disposed about the axis of the drill body 100, for example Figure 4 When the swirl nozzle 200 is 3, the center of the triangle formed by the three swirl nozzles 200 is located on the axis of the drill body 100; or when the swirl nozzle 200 is 4, four swirl nozzles 200 The center of the formed square is located on the axis of the drill body 100.

[0063] In the present embodiment, the plurality of radial nozzles 300 are disposed along the outer edge of the drill body 100 along the circumferential direction of the drill body 100. The main runway 101 extends in its radial direction to form a plurality of second communication passages 104, and the plurality of radial nozzles 300 passes figure 2 The plurality of second communication passages 104 shown are in communication with the main runway 101, and the axis of the second communication passage 104 is 90 ° angle to the axis of the radial nozzle 300 such that the radial nozzle 300 is ejected in the tangent direction of the circle The drill body 100 is rotated.

[0064] Specifically, the radial nozzle 300 can be any suitable shape, and may be, for example, a cylindrical shape, or may be a square column shape, and the inner wall of the radial nozzle can be formed. figure 2 The cone shown, or may also form a cylindrical shape, the structure of the radial nozzle 300 is not specifically defined, as long as the injection function can be realized.

[0065] In one example, the drill body 100 is a cylindrical shape, and in the side wall of the drill body 100 is formed along the circumferential direction. figure 2 The plurality of sector recess 103 mounted in the radial head 300. The length of the sector groove 103 is not specifically defined, which can extend along the axial direction of the drill body 100 to the bottom surface of the drill body 100, or may extend along the axial direction of the drill body 100 to the bottom surface of the drill body body 100. In a specific example, if figure 2 As shown, the radial nozzle 300 is inserted within the side wall of the sector groove 103, and the radial nozzle 300 is in the same plane and the side wall of the sector groove 103 is located at the same plane; in another example, the radial nozzle 300 is located Inside the sector groove 103, the inlet port of the radial nozzle 300 is fixed to the side wall of the sector groove 103.

[0066] In another example, the radial nozzle 300 further includes a right angle elbow, one end of the right angle elbow fixed to the radial nozzle 300, the other end of the right angle elbow is fixed within the second communication passage 104, radial nozzle 300 A right angle elbow is in communication with the second communication passage 104 such that the radial nozzle 300 is ejected in the tangent direction.

[0067] The plurality of radial nozzles 300 provided in this embodiment can be uniformly disposed along the outer edge of the drill body 100, for example, when the radial nozzle 300 is 3, the second communication passage 104 cooperated with the radial nozzle 300 is also 3 And the angle between the three second communication channels is 120 °; for example, when the radial nozzle 300 is 4, such as figure 2 As shown, the angle between the second communication passages 104 mounted in the radial nozzle 300 is 90 °.

[0068] Here is the mode of operation of the drill bit provided by the present embodiment:

[0069] The drilling apparatus is incorporated into the vicinity of the gray sand consolidation layer, and the high-speed drilling fluid is injected into the tube, and the drilling fluid injected from the plurality of radial nozzles is injected in the tangential direction of the same circle to drive the drill body wind around the central axis. The drilling fluid emitted by the eccentric set of swirling nozzles form a tapered, and the drill body is rotated while rotating, and the tapered drilling fluid is rotated about the central axis of the drill bit, thereby covering the jug of the sleeve of the jacket. Further, the obstruction from the cross section is cleaned. As the drill body is continuously decentralized, the cone drilling fluid is cleaned out of the sleeve, and the drilling fluid ejected from the radial nozzle is further further. Clean the closing objects near the wall to complete the entire cleaning process.

[0070] The drill bit provided in this embodiment is inserted by providing an eccentric swirl nozzle at the bottom of the drill body and the swirling nozzle and the main flow in the drill body, and the outer side of the drill body is provided in the circumferential direction and radial nozzle and radial direction The nozzle is in communication with the main flow, and the plurality of radial nozzles are ejected in a plurality of tangential directions of the same circle, thereby driving the drill bit to rotate, so that the spray range of the drill bit covers the entire cross section of the sleeve, that is, from a swirling nozzle injection The injection surface formed by the liquid can be covered by all the casing cross section, so the drill bit provided in this example can clean all the closures in the sleeve, and does not affect the inner diameter of the sleeve, thereby making the wells produced normally.

[0071] Example 2

[0072] Figure 5 A cross-sectional view of the mounting head of the drilling apparatus provided in this embodiment, Figure 6 A schematic structural diagram of a slider switch for drilling equipment provided in this embodiment, Figure 7 for Figure 6 The cross-sectional view of the slide switch shown, Figure 8 Structure of the drilling apparatus provided in this embodiment, combined below Figure 5 ~ 8 Specifically, the embodiment of the present embodiment will be described.

[0073] This embodiment provides a drilling apparatus, including any of the mounting head 400, the oil pipe 700, and the above-described embodiment, the drill bit detachable by the mounting head 400 and the tubing 700, and the oil pipe 700 passes the mainstream of the mounting head 400 and the drill bit Road 101 is connected.

[0074] Specifically, in one example, such as Figure 5 As shown, the mounting head 400 includes a housing 401, a hollow connecting shaft 402, and a first bearing 403, and a second bearing 404. A annular support table 4021 is formed, and the first bearing 403 is arranged above the annular support table 4021, and the second bearing 404 is sleeved below the annular support table 4021. The outer casing 401 includes a detachable connection upper casing 4011 and a lower housing 4012, an inner wall of the upper casing 4011, forms an upper abutment surface 4013 mating with the annular support table 4021, and the inner wall of the lower casing 4012 is formed with a ring support station 4021. The fitting surface 4014 is blended. The first bearing 403 is disposed between the upper surface and the upper contact surface 4013 of the annular support table 4021, and the second bearing 404 is disposed between the lower surface and the inclined surface 4014 of the annular support table 4021. The upper housing 4011 is formed with a cavity communication with the hollow connection shaft 402 and the top surface of the upper housing 4011 is opened, and the oil pipe 700 is inserted and fixed in the first through hole 4015. The tubing 700 and the first through hole 4015 can be fixed by a thread or can be fixed by a snap. The bottom end of the lower casing 4012 is opened with a second through hole 4016, and a portion of the connecting shaft 402 passes through the second through hole 4016, inserts the bottom end of the connecting shaft 402 and is fixed within the mainstream 101 of the drill body 100, the connecting axis The bottom end of 402 and mainstream passage 101 can be fixed by a snap, or can be fixed by a pin, of course, can also be fixed by a key connection.

[0075] Alternatively, the first bearing 403 and the second bearing 404 are thrust bearings, and the force in the direction of the axial direction is achieved during assembly mounting heads.

[0076] The drilling apparatus provided in this embodiment achieves the effect of rotating within the housing 401 under the action of the first bearing 403 and the second bearing 404 by the mounting head 400, that is, the rotation of the drill is only transmitted to the connecting axis. 402, the housing 401 of the mounting head 400 does not rotate from the mounting head 400 connecting the oil pipe 700, i.e., when the liquid is ejected, only the drill bit is driven and the connecting shaft 402 is rotated, thereby ensuring high-efficiency rotation of the drill bit.

[0077]Of course, the specific structure of the mounting head 400 is not limited to the embodiments described in this embodiment, as long as the drill bit is in communication with the tubing 700 and the detachable connection can be achieved. For example, the mounting head 400 can also be hollow cylindrical shape, and the lower end card of the mounting head 400 is disposed within the main runway 101 of the drill bit, the upper end of the mounting head is connected to the tubing 700 key.

[0078] Alternatively, a seal ring 500 is mounted between the outer casing 401 and the connecting shaft 402. Specifically, the sealing ring 500 includes an upper seal disposed over the first bearing 403 and a lower seal in the second bearing 404. In one example, a sealing ring is disposed between the upper housing 4011 and the connecting shaft 402, and a seal ring is disposed between the lower case 4012 and the connecting shaft 402. Of course, you can Figure 5 The seal ring 500 is provided between the connecting shaft 402 and the drill body body.

[0079] Alternatively, the drilling apparatus provided in this embodiment also includes a sliding switch 600, and the slider switch 600 includes an outer cylinder 601 and a slide sleeve 602, and the outer cylinder 601 has a plurality of bypass holes 6011 in the circumferential direction, and the slide sleeve 602 passes The shear pin 603 is fixed to the outer cylinder 601 to block the bypass through hole 6011. Such as Figure 8 As shown, the tubing 700 is in communication with the top end of the outer cylinder 601, and the bottom end of the outer cylinder 601 is in communication with the mounting head 400.

[0080] Specifically, the outer cylinder 601 is hollow, and the outer cylinder 601 can be any suitable shape, for example, may be a cylindrical shape, or may be a square column shape, and the upper end of the outer cylinder 601 forms a hollow first convex in its axial direction. Since then, the first protrusion is used to connect with the tubing 700. The lower end of the oil pipe 700 is formed in an axially formed second projection, and the second projection is used to connect to the mounting head 400.

[0081] The bypass hole 6011 on the outer cylinder 601 can be a circular vias, or may Figure 6 The elliptical vias shown can of course be other, the bypass holes 6011 may be 4, or may be 5, the present embodiment does not specifically limit the number of the bypass holes 6011, in the art The skilled person can set the number of bypass holes 6011 according to actual needs.

[0082] The slider 602 is hollow, the shape of the slider 602 is equipped with the shape of the outer cylinder 601, for example, when the outer cylinder 601 is a cylindrical shape, the sliding sleeve 602 is also a cylindrical shape with the outer cylinder 601 to achieve a slide jacket. 602 blockage of the bypass hole 6011.

[0083] Such as Figure 7 As shown, in order to improve the ability of the slide 602 seal, the inverted shape can be formed at the opening of the upper end of the slider 602, so that the steel ball in which the steel ball can fall in the inverted opening of the slide 602 during the seat. Thereby, the inner wall contact area of ​​the steel ball and the inverted axis opening is increased, thereby enabling the steel ball to achieve a better seal.

[0084] The slider 602 is fixed to the outer cylinder through the shear pin 603 to block the bypass hole 6011, in particular, the shear pin 603 is uniformly provided along the circumferential direction of the outer cylinder 601, and the shear pin 603 can be Figure 7 2 shown, or may be 3, for example, when the shear pin 603 is 2, the angle between the two shear pin 603 can be 180 °.

[0085] Specifically, the oil pipe 700 is inserted and fixed to the first projection of the outer cylinder 601 to connect the oil pipe 700 to the outer cylinder 601, and the oil pipe 700 and the outer cylinder 601 can be threaded, or can also be connected.

[0086] Specifically, the second projection of the outer cylinder 601 is coupled to the top end of the mounting head 400, such as the second projection of the outer cylinder 601, can be fixed to the upper casing 4011 through the first through hole 4015 of the mounting head 400. The outer cylinder 601 is in communication with the mounting head 400.

[0087] The slider switch provided in this embodiment is for discharging the grasted grasses after the cleaning. Specifically, the slide switch is first picked up, and the steel ball is put into the tubing. The steel ball enters the slider switch and the seat is held at the opening of the slider; then injects high-speed sandbrasulating liquid into the tube. The sand fluid is inflowed into the slippery switch. Under the action of the sandbatting, the shear pin is broken so that the sliding sleeve can be opened, and the bypass hole is opened, and the bypass opening stops to inject the grinding fluid in the oil pipe; finally Injecting high-speed sandbrasulating liquid to the annular space between the tubing and the sleeve, the grinding liquid has a certain viscosity therefore can carry the gray solid joint debris from the bypass hole into the tubing, and finally carry a sand ash solidifying layer The liquid returns from the tubing to the ground, and the discharge of the gray consolidation layer fragment is achieved.