Tripping system for horizontal hole drilling

Abstract

The utility model discloses a tripping system for horizontal hole drilling, and belongs to the technical field of drilling machine tools. The system comprises a drilling machine, a drill tower, a winch, a crown block, a guide pulley, a fixed pulley, a steel wire rope, a drill rod guide device and a special elevator, the drilling machine is mounted in the middle of the drill tower, the winch is arranged at the top of the drilling machine, the guide pulley is fixed above the winch through a mounting frame, the fixed pulley is fixed on a mountain above a drill hole through an anchor rod, and a crown block beam is fixed at the top of the drill tower. The crown block is fixed on the crown block beam, one end of the steel wire rope is fixed on the winch, the other end of the steel wire rope sequentially bypasses the guide pulley, the crown block and the fixed pulley and then is sequentially connected with the drill rod guide device and the special elevator, the special elevator is sleeved on the drill rod groove, and the clamping groove of the drill rod clamps the drill rod groove. The utility model has the characteristics of reliability, simplicity, practicability, economy and safety, and can realize quick trip-out and trip-down through the pulley combination.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the drilling rig tool technical field, specifically a kind of tripping system for horizontal hole drilling. BACKGROUND

[0002] The drilling of the drilling tool in prior art for horizontal drilling has the following problems:

[0003] First, the gravity direction of the drilling tool is 90° with the drilling direction when horizontal drilling, which will make the drilling tool deviation, thereby deviating from the drilling direction. Secondly, horizontal drilling must be applied by the drilling rig to the drill bit through the drill rod to generate drilling pressure, which will cause the drill rod to bend. Finally, when completing a round trip footage, the drilling rig drives the steel wire rope to extract the core during the process of winding, in addition to overcoming the gravity of the drill rod and the drilling rig itself, it also needs to overcome the friction with the hole wall. Therefore, horizontal hole construction needs more horsepower. During the tripping process, guide pulleys need to be installed around the drilling hole to change the direction of the hoisting steel rope, which also needs to overcome the friction between the drill rod, drilling tool and hole wall. Moreover, during the process of pushing the drill rod into the drilling hole, the drill rod is often bent, and the steel wire rope tension is decomposed into vertical force and horizontal force, which further aggravates the burden of the drilling rig.

[0004] In the field of engineering survey drilling, the lifting device is an important tool in drilling equipment and a very important key component for lifting and hanging the drill rod and drilling tool. Currently, the lifting device used on the market can fully meet the needs of the downhole drilling and horizontal hole drilling, but it cannot be used for horizontal hole drilling.

[0005] When using the vertical shaft type core drilling rig to implement horizontal hole drilling, it will be difficult to rely on manual pushing and pulling of the drill rod to implement tripping or tripping when the drilling depth reaches 20-30 m. The drilling rig winch cannot be used directly as in vertical hole drilling, and needs to be combined with pulley according to the different tripping or tripping to complete. Utility model content

[0006] To solve the above problems, the utility model provides a tripping system for vertical shaft type core drilling rig horizontal hole drilling, which is simple in structure, safe and reliable, and can be used for vertical shaft type core drilling rig horizontal hole drilling.

[0007] A system for drilling horizontal hole is characterized in that it comprises a drilling machine, a derrick, a winch, a crown block, a guide sheave, a fixed sheave, a steel wire rope, a drill rod guiding device and a special lifting device, the drilling machine is installed in the middle of the derrick, the winch is arranged at the top of the drilling machine, the guide sheave is fixed above the winch through a mounting frame, the fixed sheave is fixed on a mountain above a drilling hole through an anchor rod, the top of the derrick is fixed with a crown block beam, the crown block is installed on the crown block beam, one end of the steel wire rope is fixed on the winch, the other end of the steel wire rope is sequentially wound around the guide sheave, the crown block and then connected with the drill rod guiding device and the special lifting device, the special lifting device is sleeved on a drill rod groove, and a clamping groove of the drill rod clamps the drill rod groove.

[0008] Further, the derrick comprises a horizontal tower leg and a vertical tower leg, the horizontal tower leg is fixed at the top of the vertical tower leg, one end of the horizontal tower leg is fixed with the crown block beam, and the other end is fixed in the mountain.

[0009] Further, the drill rod guiding device comprises a traveling block, the traveling block slides through two traction ropes, and the two traction ropes are connected with the mountain and the crown block beam respectively.

[0010] Further, the special lifting device comprises an open barrel lifting device body, a U-shaped hook and a nut, the top of the lifting device body is provided with a clamping groove, the nut is welded on the clamping groove, two nuts are welded on the clamping groove, the two nuts are consistent in specification, the central points of the two nuts are connected with the axis of the barrel lifting device body vertically, the two nuts are symmetrical about the y-axis of the lifting device body, the U-shaped hook is located in the middle of the barrel lifting device body and is perpendicular to the opening surface of the barrel lifting device body, the nut cooperates with a bolt to fix the lifting device, and the U-shaped hook is connected with the steel wire rope.

[0011] Further, the crown block beam is provided with cable-anchor connection at both ends.

[0012] The system has the advantages that the special lifting device is connected with the steel wire rope on the horizontal plane, the traction force is converted into reverse traction force through the directional sheave installed near the hole, the purpose of lowering the drill rod into the hole is achieved, the problem of horizontal hole drilling in the prior art is solved, safety production accidents caused by the falling of the lifting device are avoided, and the system is reliable, simple, practical, economical and safe. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of a system for drilling horizontal hole.

[0014] Figure 2 It is a top view of a drill rod guiding device.

[0015] Figure 3A schematic diagram of the side structure of a specially designed lifting device.

[0016] Figure 4 A schematic diagram of the front structure of a specially designed lifting device.

[0017] Figure 5 This is a schematic diagram of a tripping system for horizontal hole drilling.

[0018] Wherein: 1—Drilling rig, 11—Drill rod, 2—Drill tower, 21—Horizontal tower leg, 22—Vertical tower leg, 23—Heavy crane beam, 3—Wind, 4—Heavy crane, 5—Guide pulley, 6—Fixed pulley, 7—Wire rope, 8—Drill rod guiding device, 81—Traveling trolley, 82—Traction rope, 9—Conventional hoist, 10—Special hoist, 101—Cylindrical hoist body, 102—U-hook, 103—Nut, 104—Slot. Detailed Implementation

[0019] Example 1: A drilling system for horizontal hole drilling includes a drilling rig 1, a drilling tower 2, a winch 3, a gantry crane 4, a guide pulley 5, a fixed pulley 6, a wire rope 7, a drill rod guiding device 8, and a specially designed hoist 10. The drilling rig 1 is installed in the middle of the drilling tower 2. The winch 3 is located on top of the drilling rig 1. The guide pulley 5 is fixed above the winch 3 by a mounting frame, and the fixed pulley 6 is fixed to the mountain above the borehole by anchor bolts. The drilling tower 2 includes horizontal legs 21 and vertical legs 22. The horizontal legs 21 are fixed to the top of the vertical legs 22. One end of the horizontal legs 21 is fixed to a gantry crane beam 23, and the other end is fixed to the mountain. The gantry crane 4 is fixed to the gantry crane beam 21. Cables are provided at both ends of the gantry crane beam 23 and anchored to the ground. The drill rod guiding device includes a traveling pulley 81, which slides via two traction ropes 82. The two ends of the traction ropes 82 are connected to the mountain and the gantry crane beam 23, respectively. The special lifting device 10 consists of an open cylindrical lifting device body 101, a U-shaped hook 102 welded to the body, and a nut 103. The top of the lifting device body 101 is provided with a slot 104. The nut 103 is welded to the slot 104. Two nuts 103 are welded to the slot 104. The two nuts 103 are of the same specification, and the line connecting their center points is perpendicular to the axis of the cylindrical lifting device body 101. The two nuts 103 are symmetrical about the y-axis of the lifting device body. The U-shaped hook 102 is located in the middle of the cylindrical lifting device body 101 and is perpendicular to the opening surface of the cylindrical lifting device body 101. The nut 103 is used with bolts to fix the lifting device. The U-shaped hook 102 is connected to the wire rope 7. The special lifting device 10 is fitted onto the groove of the drill rod 11, and the slot is locked in the groove of the drill rod.

[0020] When drilling down, if Figure 1 As shown, one end of the wire rope 7 is fixed to the winch 3, and the other end passes through the guide pulley 5, the overhead crane 4, and the fixed pulley 6 in sequence before being connected to the drill rod guide device 8 and the special lifting device 9 in sequence.

[0021] When tripping out, as shown in Figure 5 the special elevator 10 is replaced by a conventional elevator 9, one end of the wireline 7 is fixed to the winch 3, and the other end is wound over the guide pulley 5, the crown block 3, and then connected to the drill pipe guide device 8 and the conventional elevator 9 in sequence.

Claims

1. A drilling system for horizontal borehole drilling, characterized by: The drilling machine is installed in the middle of the drilling tower, the hoist is arranged on the top of the drilling machine, the guide pulley is fixed above the hoist through a mounting frame, the fixed pulley is fixed on the mountain above the drilling hole through an anchor rod, the top of the drilling tower is fixed with the trolley beam, the trolley is installed on the trolley beam, one end of the steel wire rope is fixed on the hoist, the other end is sequentially wound around the guide pulley, the trolley and the fixed pulley, and then is sequentially connected with the drill pipe guiding device and the special lifting device, the special lifting device is sleeved on the drill pipe groove, and the clamping groove of the drill pipe clamps the drill pipe groove.

2. A drilling system for drilling a horizontal wellbore as defined in claim 1, wherein The drilling tower comprises horizontal tower legs and vertical tower legs, the horizontal tower legs are fixed at the top of the vertical tower legs, one end of the horizontal tower legs is fixed with the trolley beam, and the other end is fixed in the mountain.

3. A drilling system for horizontal well drilling as defined in claim 1, characterized in that The drill pipe guiding device comprises a traveling block, the traveling block is slid through two traction ropes, and the two ends of the traction ropes are connected with the mountain and the trolley beam respectively.

4. A drilling system for horizontal well drilling as defined in claim 1, characterized in that The special lifting device comprises an open barrel lifting device body, a U-shaped hook and a nut, the top of the lifting device body is provided with a clamping groove, the nut is welded on the clamping groove, two nuts are welded on the clamping groove, the two nuts are consistent in specification, the central points of the two nuts are perpendicular to the axis of the barrel lifting device body, the two nuts are symmetrical about the y-axis of the lifting device body, the U-shaped hook is located in the middle of the barrel lifting device body and is perpendicular to the opening surface of the barrel lifting device body, the nut cooperates with a bolt to fix the lifting device, and the U-shaped hook is connected with the steel wire rope.

5. A drilling system for horizontal well drilling as defined in claim 1, characterized in that The trolley beam is provided with cable-ground anchoring connections at two ends respectively.

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