Multi-functional drilling experiment platform

Abstract

The present invention relates to a multi-functional drilling experiment platform, which consists of a gantry, a hydraulic cylinder, a power swivel and a platform base. The gantry mainly realizes the control of the drill string during the drilling-in process. In order to simulate the vertical well, the inclined well, and the horizontal well, the drilling machine needs to rotate between 0 and 90. The rotation of the gantry is realized by the extension and contraction of the hydraulic cylinder. The platform base is used to set up the gantry and the hydraulic cylinder, bearing the pulling, pressing and twisting loads of drilling experiments. Also, the platform base can move along the track to achieve different types of experiments. The multi-functional drilling experiment platform of the present invention realizes the load simulation experiment of the drilling machine at different angles using the gantry and the hydraulic cylinder.

Claims

1. A multi-functional drilling experiment platform, comprising: a gantry, a hydraulic cylinder, a power swivel, and a platform base, wherein the gantry comprises a gantry rib, a gantry column, a column support lug, a crossbeam, a pulling-pressing hydraulic cylinder lug, a pulling-pressing force sensor, a gantry double lug, a limiting platform, a guide pillar mounting seat, a guide pillar, a guide pillar rib, a crossbeam guide seat, and a crossbeam support lug; the gantry rib is fixed on two gantry columns by bolts, the column support lug is fixed on the gantry column by welding, the guide pillar mounting seat, the guide pillar, and the guide pillar rib are installed in a U-shaped steel channel of the gantry column; the crossbeam guide seat is fixed with both ends of the crossbeam by screws, the crossbeam guide seat is configured to move upwards and downwards through the cooperation of the crossbeam guide seat and the guide pillar; the hydraulic cylinder of the multi-functional drilling experiment platform is divided into a pitching hydraulic cylinder and a pulling-pressing hydraulic cylinder, the pitching hydraulic cylinder is composed of a pitching hydraulic cylinder plunger and a pitching hydraulic cylinder block the pulling-pressing hydraulic cylinder is composed of a pulling-pressing hydraulic cylinder block and a pulling-pressing hydraulic cylinder plunger; the pitching hydraulic cylinder plunger is connected to the column support lug by a first pin, the length of the pitching hydraulic cylinder is changed by a hydraulic control system to realize a rotation of the gantry; the pulling-pressing hydraulic cylinder block is fixed on both ends of the crossbeam through a trunnion seat, the pulling-pressing hydraulic cylinder plunger is installed on the pulling-pressing hydraulic cylinder lug by a second pin, the length of the pulling-pressing hydraulic cylinder is changed by the hydraulic control system to move the crossbeam along the guide pillar; the power swivel is in a middle of the crossbeam, the power swivel is composed of a hydraulic motor and a reduction gear; the platform base comprises a gantry support lug, a platform pedestal, a drill rod clamping device, and a track slider; the gantry support lug is installed to the platform pedestal by bolts, the drill rod clamping device is installed under a wellbore of the platform pedestal to clamp the experimental drill rod; the track slider is provided on both sides of the platform pedestal to cooperate with a ground track to realize a movement of the multi-functional drilling experiment platform; a gantry double lug is connected to the gantry support lug through a pin shaft, an angle of the gantry with respect to a ground is changed under an action of the pitching hydraulic cylinder to achieve multi-angle drilling experimental simulation, and since the experimental simulation is mostly vertical drilling experiment simulation, a rotary pin shaft is used to strengthen the gantry double lug and the gantry support lug to increase a reliability of the experiment platform.

2. The multi-functional drilling experiment platform according to claim 1, wherein the power swivel is designed at a center position of the crossbeam of the experimental drilling machine, and the reduction gear is required to achieve a transmission of drilling speed and force between the hydraulic motor and the drilling tool.

3. The multi-functional drilling experiment platform according to claim 1, wherein in order to simulate a function of a drilling pressure of drilling in and a pulling force for lifting, two telescopic pulling-pressure hydraulic cylinders are fixed on the drilling machine to control a displacement of the power swivel; and a pulling-pressing force sensor is placed at a lower end of the pulling-pressing hydraulic cylinder plunger to give feedback of applied pulling force and pressing force when the experiment platform is simulating drilling.

4. The multi-functional drilling experiment platform according to claim 1, wherein in order to realize multi-functional simulations of vertical wells, inclined wells, and horizontal wells, the drilling machine needs to rotate between 0 and 90, and the pitching hydraulic cylinder is stretched out and drawn back to drive the gantry to rotate around the pin shaft to achieve drilling at different angles.

5. The multi-functional drilling experiment platform according to claim 4, wherein the multi-functional drilling experiment platform simulates a drilling experiment between 0 and 90, a groove and a shearing force bar is designed to increase capacity of the screw of the gantry support lug to withstand shearing force.

6. The multi-functional drilling experiment platform according to claim 4, wherein in order to increase a stability during work, the rotary pin shaft is installed at the gantry support lug which cooperates with the pitching cylinder to support.

7. The multi-functional drilling experiment platform according to claim 1, wherein the drill rod clamping device is installed at a wellhead position on a bottom of the platform pedestal by a screw connection, the drill rod clamping device is composed of a clamping cylinder block, a clamping hydraulic cylinder plunger, a clamping holder, a clamping block, a spacer block, a gland; the hydraulic control system is used to change hydraulic pressure, and the clamping hydraulic cylinder plunger works on the clamping block to clamp the drill rod.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a schematic structural diagram of the present invention.

(2) FIG. 2 is a side view of FIG. 1 of the present invention.

(3) FIG. 3 is a schematic structural diagram of a column and a crossbeam of the gantry.

(4) FIG. 4 is a schematic structural diagram of a drill rod clamping device.

(5) FIG. 5 is a three-dimensional structural diagram of the present invention.

(6) FIG. 6 is a schematic diagram of the simulation of the drilling at 60 of the multi-functional drilling experiment platform.

(7) FIG. 7 is a schematic diagram of the simulation of the horizontal drilling of the multi-functional drilling experiment platform.

(8) FIG. 8 is a schematic structural diagram of a gantry double lug.

(9) FIG. 9 is a schematic structural diagram of a gantry support lug.

(10) In the Figures: 1. gantry ribs, 2. gantry column, 3. column support lug, 4. pin a, 5. pitching hydraulic cylinder plunger, 6. pitching hydraulic cylinder block, 7. pulling-pressing hydraulic cylinder block, 8. power swivel, 9. trunnion base, 10. crossbeam, 11. pulling-pressing hydraulic cylinder plunger, 12. pin b, 13. pulling-pressing hydraulic cylinder support lug, 14. pulling-pressing force sensor 15. gantry support lug, 16. gantry double lug, 17. pin shaft, 18. rotary pin shaft, 19. platform pedestal, 20 limiting platform, 21. drill rod clamping device, 22. guide pillar mounting seat, 23. guide pillar, 24. clamping cylinder block, 25. clamping hydraulic cylinder plunger, 26. clamping holder, 27. clamping block, 28. spacer block, 29. gland, 30. guide pillar rib, 33. crossbeam guide seat, 32. crossbeam support lug, 33. track slider.

DETAILED DESCRIPTION OF THE INVENTION

(11) Hereinafter, the present invention is further described with reference to the accompanying drawings:

(12) Referring to the drawings, a multi-functional drilling experiment platform is characterized in that the drilling experiment platform includes a gantry, a hydraulic cylinder, a power swivel and a platform base. The gantry includes gantry rib 1, gantry column 2, column support lug 3, crossbeam 10, pulling-pressing hydraulic cylinder support lug 13, pulling-pressing force sensor 14, gantry double lug 16, limiting platform 20, guide pillar mounting seat 22, guide pillar 23, guide pillar rib 30, crossbeam guide seat 31, and crossbeam support lug 32. Gantry rib 1 fastens two gantry columns 2 by bolt. Column support lug 3 is fixed on gantry column 2 by welding. Guide pillar mounting seat 22, guide pillar 23 and guide pillar rib 30 are installed in the U-shaped steel channel of the guide pillar. Crossbeam guide seat 31 is fixed at both ends of crossbeam 10 by screws. Crossbeam guide seat 31 can move upwards and downwards through the cooperation of crossbeam guide seat 31 and guide pillar 23.

(13) The hydraulic cylinder of the multi-functional drilling experiment platform is divided into a pitching hydraulic cylinder and a pulling-pressing hydraulic cylinder. The pitching hydraulic cylinder is composed of pitching hydraulic cylinder plunger 5 and pitching hydraulic cylinder block 6. The pulling-pressing hydraulic cylinder is composed of pulling-pressing hydraulic cylinder block 7 and pulling-pressing hydraulic cylinder plunger 11. Pitching hydraulic cylinder plunger 5 is connected to column support lug 3 by pin a 4. The length of the pitching hydraulic cylinder is changed by a hydraulic control system to realize the rotation of the gantry. Pulling-pressing hydraulic cylinder block 7 is fixed on both ends of crossbeam 10 through trunnion seat 9. Pulling-pressing hydraulic cylinder plunger 11 is installed on pulling-pressing hydraulic cylinder support lug 13 by pin b 12. The length of the pulling-pressing hydraulic cylinder is changed by the hydraulic control system to move crossbeam 10 along guide pillar 23. Power swivel 8 is in the middle of crossbeam 10. The power swivel is composed of a hydraulic motor and a reduction gear.

(14) The platform base comprises gantry support lug 15, platform pedestal 19, drill rod clamping device 21 and track slider 33. Gantry support lug 15 is installed to platform pedestal 19 by bolts. Drill rod clamping device 21 is installed under a wellbore of platform pedestal 19, so as to clamp the experimental drill rod easily. Track slider 33 is provided on both sides of platform pedestal 19 to cooperate with a ground track to realize the movement of the multi-functional drilling experiment platform. Gantry double lug 16 is connected to gantry support lug 15 through pin shaft 17. The angle of the gantry with respect to the ground is changed under the action of the pitching hydraulic cylinder to achieve multi-angle drilling experimental simulation. Since the experimental simulations are mostly vertical drilling experimental simulations, rotary pin shaft 18 is used to strengthen gantry double lug 16 and gantry support lug 15 to increase the reliability of the experiment platform.

(15) Drill rod clamping device 21 of the multi-functional drilling experiment platform is installed at the wellhead position on the bottom of platform pedestal 19 by a screw connection. Drill rod clamping device 21 is composed of clamping cylinder block 24, clamping hydraulic cylinder plunger 25, clamping holder 26, clamping block 27, spacer block 28, and gland 29. The hydraulic control system is used to change hydraulic pressure. Clamping hydraulic cylinder plunger 25 is worked on clamping block 27 to clamp the drill rod.

(16) In order to realize the function of the pulling force and pressing force required by the drilling simulation, the multi-functional drilling experiment platform uses two telescopic pulling-pressing hydraulic cylinders fixed on the drilling machine. Also, pulling-pressing force sensor 14 is used to give feedback of applied pulling force and pressing force when the experiment platform is simulating the drilling. In order to realize a multi-functional simulation of vertical wells, inclined wells, and horizontal wells, the drilling machine is required to rotate between 0 and 90, the pitching hydraulic cylinder is stretched out and drawn back to drive the gantry to rotate around pin shaft 17 to achieve the drilling at different angles.