JP3701072B2 - Drilling equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for digging oil wells or wells. More particularly, it relates to an improved device using a long rod with a threaded connection at the end.
[0002]
[Prior art]
In the case of a conventional long boring rod, when a new rod is added to perform boring at a deeper position, or vice versa, that is, when a single rod is disassembled after the boring operation is completed A considerable amount of wasted time was required during the sampling operation.
[0003]
Another drawback that can occur in this area is that when a long rod is in the well, it is associated with the risk of the wall of the well collapsing, in which case the equipment in the well is damaged. , It took time to return.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention provides a well device that overcomes the above-mentioned drawbacks of the prior art. Specifically, it is to provide a device that can perform a safer boring operation.
[0005]
[Means for Solving the Problems]
The above object is an apparatus for boring a well using a long rod having a threaded connecting end according to the present invention, and supports the long rod by removably fixing the uppermost rod. A drive head which is centered on a vertical axis and transmits rotational translation along the axis to the rod, and a hydraulic torque wrench which allows the upper rods of the long rod to be bridged, The hydraulic torque wrench has a pair of mutually rotatable clamps to which each elongated rod can be removably secured to engage or disengage with each other by the threaded connecting ends, An auxiliary rotary device for rotating about the axis, the rotary device being independent of the drive head and having locking means for removably fixing the rod; The lock means comprises a tapered hole suitable for passing a long rod and a wedge-shaped lock member. At the retracted position of the lock member, the wedge-shaped lock member does not interfere with the long rod, and the lock member In this locking position, the locking member is inserted between the long rod and the tapered hole, whereby the long rod is fixed to the tapered hole.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0007]
Initially shown in FIG. 1 is a long bowling rod that is operated in a well 1. The uppermost rod 20 is connected to the drive head 3 via a threaded sleeve 5 having a water inlet valve 4. In order to achieve an operation centered on the vertical axis and combined with rotational translation along this axis, the drive head 3 either bores the well or lifts the rod to the surface of the well when the well is completed. Perform sampling.
[0008]
The direction of rotation of the drive head 3 applied to the rod is always the direction indicated by the arrow A for both boring or rod extraction operations. The deionized water is sent through the inlet valve 4 and passes through the hollow long rod and carries the debris created by excavation to the surface through the gap between the well and the rod. Water that circulates during the rod extraction operation protects the well walls from collapse and at the same time keeps the wells clean.
[0009]
The apparatus also includes a hydraulic torque wrench 6 having double clamps 6a and 6b, a hydraulic or pneumatic wedge lock member 7, and a tapered hole 8. The tapered hole 8 is an auxiliary rotary. A rod is passed through the tapered bore 8 and fixedly coupled to the device 12. These members are not manipulated when the rod is withdrawn.
[0010]
An auxiliary well 2 is provided in the vicinity of the well 1, and each rod is temporarily placed in the auxiliary well 2 before being attached to a long rod that has already been operated. This auxiliary well 2 is also used during the extraction operation to place each rod that has been unraveled from the long rod. A known crane (not shown) is used to move the rod from the auxiliary well 2 to a compatible container (not shown) and vice versa.
[0011]
In FIG. 2, the rod extraction operation stage is shown, and the rod is recovered at this stage. Next, only the rod extraction operation will be described, but it can be suggested that the operation is reversed at the boring stage.
[0012]
Both the rotation of the drive head 3 and the feeding of water through the inlet valve are interrupted. From the retracted position 7 ′ where the wedge-shaped lock member 7 does not interfere with the long rod to be operated, the lock member 7 is pushed into the tapered hole 8, retracted, and firmly fixed to the uppermost rod 20 of the long rod. . The wedge-shaped locking member 7 inserted in the rod and the tapered hole 8 is shown at position 7 '' in FIG. The hydraulic torque wrench 6 is moved to a position bridging between the two top rods to engage the connecting sleeve (threaded connecting end) 21 and each clamp 6a, 6b and each sleeve Engaging separates one rod from the other. At that time, the auxiliary rotary device 12 rotates the long rod inserted into the well in the direction of arrow A. Thereby, the uppermost rod connected to the drive head is unscrewed away from the rest of the long rod. The rotation of the auxiliary rotary device 12 also ensures that the rod maintains a certain degree of freedom of motion associated with the well.
[0013]
On the other hand, if it is not possible to rotate the long rod, unscrewing can also be achieved by rotating the drive head 3 in the direction opposite to the direction of rotation indicated by the arrow A.
[0014]
FIG. 3 shows how the rod is moved to the auxiliary well 2 using a parallelogram link member pivoted after being pulled away from the rest of the long rod. A hydraulic clamp 11 in the auxiliary well 2 fixes the rod and is unscrewed by rotating the drive head 3 in the opposite direction (counterclockwise).
[0015]
The torque with which the threaded sleeve 5 is screwed into the drive head 3 is appropriately chosen to be greater than the torque used to screw the rod into the threaded sleeve 5 during this operation. As a result, during operation, the threaded sleeve 5 is prevented from being loosened incidentally.
[0016]
FIG. 4 shows the return of the drive head 3 to a position that is in line with the well, where the drive head 3 is screwed into the uppermost rod next to the long rod. As a result, the rotation of the long rod is stopped in order for the drive head to perform the screwing.
[0017]
As soon as the operation described above is completed, the feeding of water through the inlet valve 4 is resumed and the operating cycle can be started again. At the same time, a single joint elevator 9 suspended on a jib crane line of a crane (not shown) collects the rods finally disassembled into a rod container.
[0018]
5 to 8, only the operation of inserting and collecting the rod is shown. That is, deionized water is not used for these operations.
[0019]
FIG. 5 shows the stage where the long rod inside the well is suspended on the drive head 3 by means of a vertical bracket 17 which is detachably connected to the lower lifting collar 16 via a hook 14. .
[0020]
Obviously, during all these operations, during the next operation and generally when the drive head 3 is not connected to the rod, the supply of water through the inlet valve 4 is stopped. The crane uses a jib crane line 10 and a single joint elevator 9 to carry a single rod to the auxiliary well 2 or remove a single rod. FIG. 6 shows the sequence of operations for collecting the rods. Then, only rod recovery will be described, but it can be suggested that in the boring stage the operation is the reverse.
[0021]
In the hydraulic torque wrench 6, the second rod from the top is fixed by the wedge-shaped lock member 7 in the same manner as described above with reference to FIG. 2, rotated in the horizontal plane, and carried to the connecting sleeve 21. An independent spinning wrench unit 15 is used at the upper end of the uppermost rod. This unit 15 is rotated so that the top rod rotates counterclockwise and it is unscrewed from the rest of the long rod. The clamp is then opened and the long rod is rotated using the auxiliary rotary device 12 if necessary. This is because the movement of the rod in the well is not disturbed, for example, by the collapse of the interior of the well wall.
[0022]
FIG. 7 shows how the rod once removed from the long rod is transported to the auxiliary well using the pivoted parallelogram link member to remove the drive head. . Subsequently, the hydraulic clamp 11 of the auxiliary well 2 is fixed and removed from the lifting collar 16.
[0023]
The stage shown in FIG. 8 shows the return of the drive head 3 with respect to the center line of the well, where the lifting collar 16 is connected to the rod at the top of the long rod. Obviously it is necessary to stop any rotation by the auxiliary rotary device 12 to allow the connection of the lifting collar 16.
[0024]
In FIG. 9 to FIG. 12, the operational steps for inserting or retrieving the rod are illustrated. That is, deionized water is not used for these operations. A friction hydraulic spinning device 18 driven by the head 3 is used.
[0025]
FIG. 9 shows the stage where the long rod inside the well is suspended in the drive head 3 by a vertical bracket 17 which is removably connected to the lower lifting collar 16 through the hook 14. . In this case, the crane uses the jib crane line 10 and the single joint elevator 9 to carry or remove a single rod from the auxiliary well 2. FIG. 10 shows an operation stage in which the rod is pulled out. Next, only the boring operation will be described, but it can be suggested that the operation is the reverse in the rod extraction stage.
[0026]
The hydraulic torque wrench 6 provided with the above-described spinning wrench unit 15 fixes the second rod 20b from the top with the wedge-shaped lock member 7 in the horizontal plane in the same manner as described above with reference to FIG. It is rotated and carried to the coupling sleeve 21.
[0027]
The lower part of the hydraulic torque wrench 6 is fixed to the second rod 20b. The frictional hydraulic spinning device 18 actuating member 13 is operated to a contact portion which cooperates with the upper edge of the connecting portion of the rod. The counterclockwise rotation of the drive head 3 removes the rod from the long rod. The rotation of the rod is made possible by the lifting collar 16.
[0028]
In this position, the hydraulic torque wrench 6 is removed and, as described above, the auxiliary rotary device is operated to prevent it from remaining fixed in the well.
[0029]
FIG. 11 shows how the rod once removed from the long rod is transported to the auxiliary well using the pivoted parallelogram link member to open the drive head. Yes. Subsequently, the auxiliary well hydraulic clamp 11 is fixed and the rod is lifted and released from the collar 16.
[0030]
The stage shown in FIG. 12 shows the return to the center line of the well as shown in FIG. A single joint elevator suspended on the jib crane line 10 passes the last disassembled rod to a suitable container (not shown).
[Brief description of the drawings]
FIG. 1 shows a first stage of operation using a first embodiment of the device according to the invention.
It is a diagram showing a second stage of operation using the first embodiment of Figure 2 device according to the invention.
Is a diagram showing a third stage of operation using the first embodiment of FIG. 3. The apparatus according to the present invention.
[4] using the first embodiment of the apparatus according to the present invention is a diagram showing a fourth stage of operation.
It is a diagram showing a first stage of the operation using the second embodiment of Figure 5. The apparatus according to the present invention.
It is a diagram showing a second stage of the operation using the second embodiment of Figure 6 the device according to the invention.
Is a diagram showing a third stage of the operation using the second embodiment of FIG. 7 apparatus according to the present invention.
Is a diagram showing a fourth stage of operation using the second embodiment of FIG. 8 according to the present invention.
Is a diagram showing a first stage of operation using the third embodiment of FIG. 9 the device according to the invention.
It is a diagram showing a second stage of operation using the third embodiment of FIG. 10. The apparatus according to the present invention.
11 is a diagram showing a third stage of operation using the third embodiment of the apparatus according to the present invention.
Is a diagram showing a fourth stage of operation using the third embodiment of FIG. 12 according to the present invention.
[Explanation of symbols]
1 Well 2 Auxiliary Well 3 Drive Head 4 Inlet Valve 5 Threaded Sleeve 6 Hydraulic Torque Wrench 6a, 6b Clamp 7 Wedge Locking Member 8 Tapered Hole 10 Jib Crane Line 11 Hydraulic Clamp 12 Rotary Device 14 Hook 15 Spinning Wrench Unit 16 Lifting collar 18 Friction spinning device 20 Long rod 21 Threaded connection

Claims (5)

In an apparatus for boring a well using a long rod with a threaded connecting end (21),
A driving head (3) for supporting the long rod by removably fixing the uppermost rod and transmitting a rotational translational motion to the rod about the vertical axis and along the axis;
In addition , a hydraulic torque wrench (6) that enables the upper two rods (20a, 20b) to be bridged is provided, and the hydraulic torque wrench (6) is connected to the threaded connecting end (21). A pair of mutually rotatable clamps (6a, 6b) to which each of the long rods (20a, 20b) can be removably secured to engage or disengage with each other,
Furthermore, an auxiliary rotary device (12) for rotating around the axis is provided, the rotary device (12) being independent of the drive head (3),
The rotary device (12) has locking means (7, 8) for removably fixing the rod, wherein the locking means (7, 8) is a tapered hole (8) suitable for passing a long rod. ) And a wedge-shaped lock member (7). In the retracted position (7 ') of the lock member (7), the wedge-shaped lock member (7) does not interfere with the long rod, and the lock member (7) 7) At the lock position (7 ″), the lock member (7) is inserted between the long rod (20) and the tapered hole (8), whereby the long rod (20) is tapered. A device fixed to (8).   The uppermost rod (20a) of the long rod is attached to the drive head (3) by being screwed into the threaded sleeve (5) with the first coupling torque, and in this case, the sleeve (5) is attached to the drive head. Device according to claim 1, characterized in that the second coupling torque screwed into the part (3) is greater than the first coupling torque.   The drive head (3) is coupled to a lower collar (16) for lifting the uppermost rod (20a), and the collar (16) is removable by a plurality of brackets (17) to drive the head (3 The device according to claim 1, wherein the device is hung on.   Device according to claim 3, characterized in that it comprises an independent spinning wrench unit (15) for screwing and loosening the rod.   A friction hydraulic spinning device (18) driven by the drive head (3) is provided in connection with the drive head (3), the friction hydraulic spinning device (18) providing the friction means as the uppermost rod. Device according to claim 3, characterized in that it has a hydraulic actuating member (13) for engaging the upper end of (20a).

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