JPS59187988A - Improvement in drive rod for driving one-line drill rod - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a drive rod that is vertically displaceably attached to a rotary table and that drives all drill rods in a row when drilling wells such as oil wells.

Currently, the drive rod is screwed onto the upper end of the single-row drill rod. Therefore, each time a new drill rod is added, the assembly consisting of the drive rod and the row of drill rods is raised, the row of drill rods is locked above the turntable, and the drive rod is unscrewed. , screw the drive rod to the new drill rod, raise the assembly consisting of the drive rod and the new drill rod, and machine the lower end of the new drill rod to the i end of the row drill rod, and then attach both ends. After screwing them together, it is necessary to lower the entire drill rod with a new drill rod and perform the next drilling.

Not only are these operations time-consuming and expensive, but tightening and loosening the screws can often damage the threads of the drill rod, and the downtime involved can cause blockages. The drive rod must be the same length as the drill rod, which could lead to undesired displacement, and because it is located within the safety device, it would be impossible to reliably close the safety device in the event of a blowout. becomes.

According to one feature of the invention, there is provided a hollow drive rod for driving a row of drill rods, which is mounted on the rotary table to drive the row of rods via its upper end; The hollow drive rod has an internal longitudinal passage f of a width sufficient to be penetrated by a row of drill rods; and a controllable gripping means provided within the body for gripping the row of drill rods. It consists of

With such a drive rod, drilling can be carried out to a depth equal to several times the length of the drive rod, by successive lowering and raising of the drive rod, before adding a new drill rod to a row of drill rods. Moreover, new elements can be added directly without the need for subsequent loosening of the drive rod screws or subsequent screw tightening.

Preferably, the gripping means are distributed over substantially the entire length of the drive rod body.

The drive rod can be used in a drilling rig consisting of, from top to bottom, a turntable, a spout pipe and a safety device, and has a length approximately equal to the spout pipe. In this way, the drive rod can have maximum length without interfering with the safety lid.

Preferably, the internal passageway of the drive rod body has a circular cross section.

The gripping means consists of a deformable cylindrical casing which is fixed at its end to the drive rod body in a leak-tight manner, the inlet means for the damping fluid being confined between the drive rod body and the casing. It is provided so as to communicate with the control space. The hollow drive rod body may also include radial guide means for the deformable cylindrical casing.

Preferably, the cylindrical casing consists of an elastically flexible reinforcement.

The cylindrical casing has a gripping block fixed through the casing on its radially (a) inner surface, supporting a bottle-guiding block located opposite the handle on the opposite side of the casing. Ru.

Each bin is guided within an opening in the drive rod body between successive rings of nodular pins; by spacer collars disposed within the interior of the rod body.

The drive rod may also be provided with a counterweight for speed limiting, including winching means.

The lifting device is fixed axially to the upper end of the drive rod c,
It consists of two horizontal arms that are fully guided on vertical brackets. The horizontal arm can be formed by a reservoir for admitting control fluid into the control sheath.

Embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings.

1.2 FIG. 1l-i: Mounting means 2ff having a number of holes 3 for receiving component parts (not shown) for driving the drive rod 4: Shows a conventional rotary table 1 equipped with a drive rod 4 is screwed to the uppermost rod end of a single row drill rod (not shown).

Below the rotary table 1, a gushing pipe 5 is provided with a drilling mud discharge chute 6 and extends between the rotary table 1 and safety devices 7 and 80.
The safety devices range from blowout preventers such as ram type preventers and current type preventers manufactured by Hytril Corporation, which are mounted on the head 9 of the well casing 10 during drilling.

Figure 3 shows the same safety devices 7 and 8 below the turntable 1 as in Figure 1.
It shows. However, in FIG. 3, the drive rod 4 from j/I has been replaced by a hollow drive rod 11.
1. The hollow drive rod 11 has a larger It2i' property than the drive rod 4 of ◇E, and the width of the drill row rod is larger than the width of the drill row rod. 5. The excitation rod 11 has a vertical passage therein for negative passage.) The excitation rod 11 also has a means for gripping the upper element 12 of the row-shaped drill rod in the internal passage. The element 12 is formed by a drill rod or an assembly of mantissa drill rods.The gripping means are shown in FIG. 3, examples of which can be seen in FIGS. 6.8 and 9. and explain.

The drive rod 11 has a square outer shape in the actual example shown in FIGS. 3 to 10, and therefore, as shown in FIG.
Component 13C has a square orifice for driving. However, the drive rod 11 is not limited to this, and may have a large rectangular or generally polygonal outer shape, or may simply be provided with longitudinal protrusions or grooves. * F) The external shape of the Nb rod 11 should be such that it can be freely displaced in the vertical direction, while being fixed so that it can rotate integrally with the rotary table. The TMR rod 11 preferably has a length equal to the discharge tube 5, typically about 4 to 8 m, most commonly about 6 m.

The drive rod 11 has a two-way thrust bearing 1 at its upper end.
4, whose fixed part 15 supports two horizontal arms 16.
It is fixed at 17. The arms 16.17 are vertically movable and their free ends 18, 1.9 have two vertical platens (20.2) which serve as guide rails.
1 by a guide device.

The guide device a is not shown because it is conventionally known. The vertical displacement of the horizontal arm 16.17 is linked to the displacement of the mechanical cable 22.23, which extends in its intermediate section to the projections 24.25 and 26.27 of the arm 16.17, respectively. Each cable 22, 23r/i, with one end attached to a return winch 28, 29
0.21 Tanigami Road (warm) attached l-Lee-3
Pass through 0,3'l, balance J at the other end, - 32,3
I support 3.

Placed within the drive rod 11 is the means for holding the drill row element 12.
], the counterweight from the entire drill row is 32.33
Since it is +14, the sole (1st 1st part) is lowered into the pond.
and drive the horizontal arms 16, 17 downward. fλf, the arms 16 and 17 are lowered, while the joints h and 32 and 33 are raised.

When the drive rod 11 or its lower end position 1 is pressed, the internal gripping means is deenergized and the drive rod 11 is released from the workpiece 12 of the row-shaped drill rod.

Next, the counterweight Q32.33 is moved to the east, and in order to avoid increasing the load applied to the horizontal arm 16.17, the drive rod 1 is raised to its upper end position. Ru. The raising of the drive rod 11 is retarded by the action of the return latch 28,29. Thereafter, the gripping means is activated again and excavation continues.

I did the above. By repeating the lowering and raising cycles of the drive rod 1], the length of the element 12, in other words the length of the drill rods, i.e. the length of the drill rods previously connected to each other and already screwed into the rod row in a predetermined position. It is possible to excavate to a depth equal to Thus the analogy is 27 m consisting of three interconnected rods.
elements can be used.

In the process of adding a new element 12 to the rod row, it is secured by a conventionally known wedge such as the twisted wedge 34 shown in FIG. inserted. This wedging may be performed by an automatic method.

The gripping means arranged υ in the drive rod 11 can be constructed in various different shapes. For example, the drive rod 11 may be mechanical.
With the relative rotation of the element 12 and the drive rod 11
Move the sleeve inward and move 1 = j force, j'iM the inside of the 1 river mouth provided on the drive rod 11! It may be biased with a mat attached to the turntable VC to act on the auxiliary pin, or it may be biased with a key forming a wedge between the drive rod 11 and the element 12, or it may be biased electromagnetically or fluidically. For example, a fluid pump may be installed at the level of the B thrust bearing 14, and the element 2 may be locked when the drive rod 11 and the element 12 rotate relative to each other.

The hydrodynamic gripping means will be explained below with reference to Nos. 6 to 101. This method is particularly preferred since it allows 0T capability to grip the upper drill rod element 12 over a large area and avoids the risk of damage.

The Wi control fluid for the gripping means, for example air, is IQl/-
1 mechanically resistant and are preferably introduced into the drive rod 11 via the inlet or outlet ports 9736, 37 interposed with the arms 16, 17 mentioned above.

These tubes 36 and 37 are connected to cables 22゜2, respectively.
By sliding along the vertical platen 20.21 attached to the arm 16.21, it performs the same mechanical function as the arm 16.17 when the drive rod 11 is lowered and raised. The inlet or outlet tubes 36.37 have their respective free ends 38.3
At 9, it is fluidly connected to a pipe f (not shown) for introducing or discharging a control fluid.

In FIG. 6, the left half shows the gripping means in an inactive state, and the right half shows the gripping means in an active state gripping the element 12.

The gripping means arranged in the internal passage of the drive rod 11 consist of a deformable cylindrical casing 40 coaxial with the axis of symmetry of the rod 11. The casing 40 is held at its upper longitudinal end by a yield-shaped end piece 41, and at its lower longitudinal end is connected to a first connecting shell 42 attached to the drive rod 11, for example by screwing. A second annular leak-proof fitting 43 is secured to the fitting 42 .

The drive rod 11 consists of a body 44 of elongated shape, the inner passage of which is formed by an inner circular surface 46 (assumed as an inner cylindrical space 15). The corner is chamfered as shown at 47, and the 9+1 (゛ in the ffi direction) id hole 4 is machined by ('r)14, for example, an external t1b milling cutter.
It has 8. Insert a wedge 49, for example a welded V-shape, into the guide hole 48, complement the outer shape of the drive rod 11, and give it a square shape as shown in Figure 8.

A guide bin 50 is inserted into each guide hole 48 in the radial direction, and is positioned within the guide bin 50 in the radial direction. Each guide bin 50 has a trailing handle 51 connected to a freely screwable cylindrical casing 40 and a gripping block 52 located inside the casing 40 on the opposite side of the guide bin 50. γ mark. Upper element 1 of drill rod
The front opening of the gripping Glock 5z facing the Glock 2 has an arc-shaped lU
It is configured so that it can come into contact with the element 12. Guide holes in 6 directions 43. guide bin 50
These assembly keys, consisting of +4L retaining block 52 and connecting screw 51, are distributed over the entire length of the drive rod and are spaced apart from each other.

The deformable cylindrical casing 40 is made of an elastically flexible material such as rubber, synthetic elastomer, or other synthetic resin reinforced with, for example, fibers with high mechanical resistance, and is moved to its rest position relative to the casing 40. It is composed of a mineral that gives it natural reversible properties. During manufacture of this material, a small copper ring surrounding each screw 51 is incorporated to prevent leakage around the screw. You can also make fun of it. The guide pin 50 and the gripping block 52 are made of steel, for example, and the gripping block 52 has a high 1&:+'A
The next surface is temporarily covered with a coefficient coating.

As is clear from FIG. 6, the fixed foot 15 of the bearing 14 is in the form of a rectangular block with radial ducts 53, 54 into which a tube 36 is connected, respectively. .37 is open. The fixed annular block 15 has a ball bearing 55 at its upper part and a ball bearing 56 at its lower part, and is clamped between a rotating lower annular body 57 and a rotating upper annular body 58. Both of these bodies are fixed to an elongated main body 14. Tsumashi bisimal body 57. , 58 are connected to each other by assembly bolts 59, and the lower annular body 57 is aligned. The lower annular body 57 has an axially extending passage 60 and a half-length duct 53. The inner 1h1 is limited by the main body 411 and the deformable cylindrical casing 40]
It is connected to 61. The annular end piece 41 of the casing 40 is fixed by the skeleton 62.
It is Ai+ fitted to the lower annular body 57 so as not to cause any distortion, and is held there by a sharp-tipped screw 63 to prevent leakage.

Leakage prevention between the stationary annular block 15 and the rotating lower bar 57 is ensured by the lips 64 and 65.

In FIG. 6, the assembly bolt 59 is located opposite the passage 60 to facilitate manufacturing. Each +f bolt 59 is provided with an O-ring-shaped storage gasket 66 at its lower end.

In order to effectively apply force to the casing 40, a spacer collar 67 is provided between the upper and lower bottles 50, and the collar 67 is coaxial with the inner cylindrical surface 46 of the main body 44 and is connected to the inner cylindrical surface 460. The outer diameter is slightly smaller than the surface and diameter.

If the part of the workpiece 1/ment 12 gripped by the drive rod 11 includes the joint 68 of the two drill rods,
The gripping action of the block 52 in contact with this joint 68 is less effective, but the element 12 is
can be reliably supported by the curved rod 11.

The part of the upper element 12 located above the drive rod 11 is gripped by a lifting device, an embodiment of which is partially shown in FIG. However, in FIG. 11, the vertical rail 7 is biased by a lift tool (not shown) and
A horizontal arm 71 supporting a guide roller 72 that comes into contact with
The handling hook connected to 9 is not shown. The lift carriage 70 carries uprights 74 + 75, an upper tub beam 76 and a lower force field 41 and a dowel 77.

The transverse member 76 is connected to the mud conveying pipe 79: 1. Contributed/ζ
Support 17゛1: Tool 78 and cement hardening work, etc. F[
It has 80 threads and 2 threads, which are used for the work of the priests.

These connectors are connected to a central vertical cylindrical duct 81, 82', respectively, through a central vertical cylindrical duct 831; A cylindrical part 84 with a range of ψ11□ at the incisal end.
in fluid communication.

In this way, the vertical passage extends from the duct 837JΔ to the l-shaped part 84.
There are three devices distributed in series, each serving the functions of rotating deposit, support and rotation, respectively.
+5, 86 and 87.

The device 85 includes a fixed ring 88 supporting an upper bearing 89 and a lower bearing 90 supported by a duct 83.
has. The upper and lower grates 91°92 are the upper and lower bearings 89, 90, respectively. ! = It is plated and tightened together by the tightening means 93. Below the lower grate 92 and duct 83 'IM'l D: A! A sealing force socket 94 is provided between them.

The lower plate 92 extends downwardly by a first tube 95, and a second tube 96 having a larger diameter and having an internal thread for receiving a retaining ring 97 is connected to the first tube 95, for example by screwing. 1st team 9
5 holds the inner gasket 98 and reliably prevents it from coming into contact with the upper end of the cylindrical portion 84 extending into the first tube 95 before insertion.

The tubular portion 84 is fixed to a bearing disc 99, which extends into the second cheep 96 and rests on the retaining ring 97 when the tubular portion 84 is in the lower position.
It has a part that is ff. The vertical displacement of the cylindrical portion 84 is possible over a distance A defined between the uppermost and lowermost positions of the bearing disc 99 within the second hinge 96.

The cylindrical part 84 is fixed at the level of the device 87 to a large gear 100, which can be engaged with a pinion 101 driven by a motor 102, for example. motor 10
2 and a pinion 101 are engaged with the large gear 100.

Funnel 77 is held on upright 74.75 by locking pin deflector nand 104.

Upper element of row drill rod attached to displacement jack 106] 2f: Retractable side arm 10 with tightening means 107 for gripping 71-7
5 is provided below the funnel-shaped body 77.

In use, a new element 12 is aligned below and in line with the tubular portion 84 (as shown in FIG. 11). External thread 10 at the end of the cylindrical part 84
Since it has a male screw thread 108 corresponding to 9, the lift carriage 70 is lowered to lower the ) shaped part 84 to engage with the element 12, and by the operation of the rank 103, it is engaged with the large gear 100. By rotating the cylindrical portion 84 with the pinion 101, the element 12 is fixed to the IJJ.
``Mg.'' When tightening this screw, the bearing di-
descends within the second cheese 96. In addition, what kind of 1rl can be added to the male screw thread 108 with a threaded reversing diameter insert?
A lift carriage can also be adapted to the i 3'j4 element 12.

The temporary element 12 is then screwed via the pinion 101 to the upper end of the row rod which is held locked within the drive rod 11. When the cylindrical portion 84 is unscrewed from the row of drill rods locked in the drive rod 11 before starting the work of adding a new element 12, the same L <M1' 102 Tobinion 101 used.

As described above, according to the present invention, it is possible to obtain a drive rod that not only reduces the necessary handling work but also maintains the track of the equipment and improves the safety of workers.

[Brief explanation of the drawing]

Figure 1 is a schematic front view of the casing head of an oil well and a part of the conventional drilling equipment placed at 1ijJ of the rotary table; Figure 8g2 is a plan view of a part of the equipment shown in Figure 1; Figure 3 The figure is a schematic front view of 1)ζ1 similar to FIG. 1, showing a part of the drill device of the present invention including an embodiment of the drive rod according to the present invention; FIG. 4 is a diagram of the rotary table of FIG. Figure 5 is a perspective view of the wedge used in the device shown in Figure 3, rl; Figure 6 is an enlarged vertical 'r'f
R-side view, along 6-6 Hi in Figures 8 and 9 (new view;
Figure 7 is a plan view of the t drive rod in Figure 6; Figure 8.9 is an Mt view of the drive rod along lines 8-8 and 9-9 in Figure 6-1; )'x! l < IJ Drill in the inner part of the mate), ' is the released state and the tightened state,
Cross-sectional views each showing the relaxation; Section 10 is a bottom view of the in rod, and section 10 in FIG.
- a sectional view along 10 points; and FIG. 11 shows the lift ik R associated with the device 6 of FIG.
+'+: is a plan view showing half of it in cross section. 1. Turntable, 5. Sound output, 7.8.Safety equipment [)--1
11...Hollow shape, drive rod, 12...-I11j
Trill rod, 16.17...Horizontal arm, 2o l
21 Il Illustrated bracket), 28.29 Winch hand j5.32゜33 Lift device, 36, 37
Population Means, 4(). 52... Gripping means (40; cylindrical caning with deformable eyes, 52; grasping block), 44., 1. Extinguishing rod body, 41.43...Casing end, 46...
Inner wall of the rod body of the drive j, 48, :) 0-;
'74 do means (48;, jP id hole, 50; 〃id bin), 61... control space 11j]. Out a person Koni//Hi Francais Dévetrol agent °Me L Yama Yuki male procedure convergence 1-sun (Kaji,) lHi 1459 people E April /θ 1 yoη temple child 5'long'self Wakasugi O υ wo,,: 3G x blade 1゜1, fight Y to display p, 'i 7i 58 year city' of k, l ': 4'
), 2430 i 6 '+32, Jimei's name and profit X - row drill I: f, 7
゛Komeno. Cut, do(r)j, b,, 31″Ni1E
-1 Nagisa Φ matter and silence Mui'-1 Degumi people's office Tokyo C; jP4 ward front! IX+ii S-1425
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(03) 443-8) +86 Name Patent Attorney (6ii7
4) ゛・Yama Rod No. 4:. 5. B of the amendment order t + 59 years 3 no 7 days (Bu, 5 sending: t1j'i
L March 270) 6, Target of correction Fig.
Submit X Lu,? Wow.

Claims (1)

[Claims] 1. In a hollow drive rond for driving a row of drill rods, the hollow drive rond is mounted on a turntable for driving the row of drill rods through its upper end; Rondo (1
1) a body (44) defining a longitudinally extending internal passageway (45) of sufficient width for passage of a row of drill rods (12); and a row of drill rods disposed within the body; controllable gripping means (4,0,
52) A driving rod comprising: 2. According to the claims 1. "(
moving rod. :(, From the top to the bottom, the rotating table (1), the gushing pipe (
5) and a safety device (7, 8) for use in a drilling device, all characterized in that the driving rod (11) has substantially the same length as the gushing pipe (5). Ichimu's・II; mouth, rL as described in tII Section 1 or 2! The upper and lower ends (41, 43) of the Y-movement rod gripping means (40, 52) prevent leakage.
From the deformable cylindrical casing (40) connected to the drive rod body (44) at J. ! 1
Inlet means (36, 37) communicating with a control space (61) defined between the incorporeal inner wall (46) of the 11" throat and the cylindrical casing (40) are provided in the vIL body i1i! It was established for the purpose of I. In the drive rod, the range of the sum WFhn is determined by the fact that the drive rod body (44) includes radial guide means (48, 50) for the deformable cylindrical casing (40). 1-drive rondo according to any one of the items. 5. The cylindrical casing (40) supports a gripping block (52) on its radially inner surface, and the gripping block is connected to a guide bin (50) disposed on the other side of the casing (40) opposite thereto. Casing (40) fixed via e (5
1) The drive rod according to claim 4, characterized in that: 6. Any one of claims 1 to 4, characterized in that the lifting device (32, 33) with a counterweight for speed restriction including winch means (28, 29) is provided. A drive rod assembly including the drive rod described in . 7. The lifting device (32, 33) comprises two horizontal arms (16, 17), which are fixed except for allowing rotation to the upper end of the drive rod and attached to the vertical bracket ( 7. The drive rod assembly according to claim 6, characterized in that the drive rod assembly is guided along the drive rods 20, 21).