CN104929542A - Power rat hole device applicable to butting strings of well drilling platforms - Google Patents
Power rat hole device applicable to butting strings of well drilling platforms Download PDFInfo
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- CN104929542A CN104929542A CN201510281285.5A CN201510281285A CN104929542A CN 104929542 A CN104929542 A CN 104929542A CN 201510281285 A CN201510281285 A CN 201510281285A CN 104929542 A CN104929542 A CN 104929542A
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- scabbard
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Abstract
The invention belongs to the field of drilling and production equipment, and particularly discloses a power rat hole device applicable to butting strings of well drilling platforms. The power rat hole device comprises a laying table, a rat hole scabbard and a drilling pipe lifting table. A clamping mechanism is arranged at an opening of the rat hole scabbard and comprises a mounting seat and a pair of clamping cylinders, the clamping cylinders are horizontally oppositely arranged in the mounting seat, each clamping cylinder can drive a corresponding clamping head, and the two clamping heads are of complementary Y-shaped structures; a hole is formed in the mounting seat, and a drilling pipe can penetrate the hole; the drilling pipe lifting table is mounted at the tail end of the rat hole scabbard, two lifting mechanisms of a fixing seat are mounted on an lower rat hole scabbard and can drive the drilling pipe lifting table to ascend and descend, each lifting mechanism comprises a pulley block, a steel wire rope and a telescopic adjusting cylinder, one end of each steel wire rope is connected with a lug plate of the drilling pipe lifting table, the other end of each steel wire rope is wound through the corresponding pulley block and then is fixed to a wedge-shaped connector on the fixing seat, and movable pulleys in the pulley blocks can be pushed and pulled by the telescopic adjusting cylinders. The power rat hole device has the advantages that three-joint unit connection operation and drilling operation can be simultaneously carried out, and the power rat hole device is applicable to drilling pipes with different lengths.
Description
Technical field
The invention belongs to drilling-production equipment field, specifically a kind of dynamic rathole device being applicable to the docking of offshore boring island tubing string.
Background technology
Connect thribble operation in conventional drilling machine can not carry out with drill-well operation, when connecing thribble, drill-well operation can only interrupt simultaneously.After having there is conventional rat hole subsequently, can carry out with drill-well operation although connect thribble operation simultaneously, the drilling rod of regular length can only be suitable for.
Mostly existing drilling rod clamping mechanism is the form adopting " oil cylinder+linkage ", as shown in Figure 1.This method of clamping be homonymy or symmetrical oil cylinder push away (drawing) dynamic under, linkage action, holds drilling rod tightly or unclamps.Its technical characterstic is: by mechanism's centering.But chucking power is relatively little, structure is more complicated, and arrangement space is large, takies the space of well head.
Mostly existing drilling rod hoisting mechanism is the form adopting " hoist engine+pallet ", as shown in Figures 2 and 3.This power mode of lifting is: pallet is arranged in rat-hole scabbard, wire rope holder tray bottom, utilizes hoist engine to drive pallet lifting.Its technical characterstic is: lifting mechanism setting height(from bottom), take up room very large, complex structure.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of dynamic rathole device being applicable to the docking of offshore boring island tubing string is provided, can meets and connect thribble operation and carry out with drilling operation simultaneously, the drilling rod of different length can be adapted to again, decrease labour, improve operating efficiency.
For realizing above-mentioned technical purpose, scheme provided by the invention is: a kind of dynamic rathole device being applicable to the docking of offshore boring island tubing string, comprise paving platform, rat-hole scabbard, drilling rod elevating stage, rat hole mouth of pipe place is provided with clamping device, described rat-hole scabbard comprises upper, middle and lower segment rat-hole scabbard, upper rat-hole scabbard is installed on derrick crossbeam, and the two ends up and down of middle rat-hole scabbard are connected with upper rat-hole scabbard, lower rat-hole scabbard with alignment pin respectively by flange.
Described clamping device is installed on the top open part of rat-hole scabbard, and it comprises mount pad, and is placed in horizontally-opposed a pair clamping cylinder in mount pad, and each clamping cylinder drives a clamping head respectively, and these two clamping heads are complementary Y-shaped structure; Mount pad is provided with the hole passed for drilling rod.
Described drilling rod elevating stage is installed on the inside of lower rat-hole scabbard, and the guide openings that the otic placode of drilling rod elevating stage is offered by lower rat-hole scabbard middle and lower part sidewall is stretched out; Lower rat-hole scabbard upper portion side wall installs the elevating mechanism driving drilling rod lifting of lifting table by holder, elevating mechanism comprises assembly pulley, wire rope, telescopic adjustment oil cylinder, the otic placode of wire rope one end jointed rod elevating stage, the other end is fixed on wedge joint place on holder after walking around assembly pulley, the movable pulley in telescopic adjustment oil cylinder push-and-pull assembly pulley.
And, described clamping head forms Y-shaped structure by V-arrangement clamping face and connector, stiffener is provided with between V-arrangement clamping face and connector, V-arrangement clamping face is stepped, two clamping heads turn upside down assembling mutually, make the long section of arbitrary V-arrangement clamping face can stretch into short section of the other side's V-arrangement clamping face, form complementary type clamping.
And, described clamping head forms Y-shaped structure by V-arrangement clamping face and connector, stiffener is provided with between V-arrangement clamping face and connector, V-arrangement clamping face is stepped, two clamping heads turn upside down assembling mutually, make the long section of arbitrary V-arrangement clamping face can stretch into short section of the other side's V-arrangement clamping face, form complementary type clamping.
And described V-arrangement clamping face is provided with the axial anti-skidding serrated face in the same way with drilling rod.
And, described drilling rod elevating stage comprises drilling rod pallet, otic placode connector and buffer spring, the side of otic placode connector is fixedly connected with otic placode, drilling rod pallet is connected by bolt and nut with otic placode connector, buffer spring is sheathed on bolt and between drilling rod pallet and otic placode connector, supporter for drilling rod tray bottom is provided with the guide strip adapted with the opening size of otic placode connector.
Beneficial effect of the present invention is: 1, chucking power is large, and structure is simple, and easy to manufacture, arrangement space is little, and clamping head simplicity of design is novel, can the drilling rod of compatible different-diameter; 2, lift height is determined by oil cylinder stroke, not only takes up room little, and structure is simple, and operation and maintenance is more convenient, and whole lifting mechanism is arranged on lower rat-hole scabbard, and height dimension is less than 3 meters, and hoist engine+pallet artificial lifting way, height is at about 9 meters.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing drilling rod clamping mechanism.
Fig. 2 is the structural representation of existing drilling rod hoisting mechanism.
Fig. 3 is the right view of Fig. 2.
Fig. 4 is structural representation of the present invention.
Fig. 5 is the left view of Fig. 4.
Fig. 6 is stereogram of the present invention.
Fig. 7 is A-A face sectional view in Fig. 4.
Fig. 8 is the structural representation of clamping head of the present invention.
Fig. 9 is the structural representation of drilling rod elevating stage of the present invention.
Figure 10 is the sectional view of Fig. 9.
Wherein, 1, slip position, 2, rat hole mouth, 3, clamping device linkage, 4, clamping device oil cylinder, 5, hoist engine, 6, wire rope rope, 7, pallet, 8, rat-hole scabbard, 9, derrick crossbeam, 10, paving platform, 11, upper rat-hole scabbard, 12, middle rat-hole scabbard, 13, lower rat-hole scabbard, 14, mount pad, 15, clamping cylinder, 16, clamping head, 17, clamping face, 18, connector, 19, stiffener, 20, otic placode, 21, guide openings, 22, drilling rod pallet, 23, otic placode connector, 24, buffer spring, 25, bolt, 26, nut, 27, guide strip, 28, holder, 29, wire rope, 30, telescopic adjustment oil cylinder, 31, fixed pulley, 32, movable pulley, 33, wedge joint.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
The present embodiment provides a kind of dynamic rathole device being applicable to the docking of offshore boring island tubing string, and as shown in Fig. 4 ~ Fig. 6, comprise paving platform 10, rat-hole scabbard, drilling rod elevating stage, rat hole mouth of pipe place is provided with clamping device.
Described rat-hole scabbard comprises upper, middle and lower segment rat-hole scabbard, and upper rat-hole scabbard 11 is installed on derrick crossbeam 9, bears drilling rod and the deadweight of bottom steel pipe; The two ends up and down of middle rat-hole scabbard 12 are connected with upper rat-hole scabbard 11, lower rat-hole scabbard 13 with alignment pin respectively by flange.Sectionally assembled rat-hole scabbard can reduce length when transporting.
Described clamping device is installed on the top open part of rat-hole scabbard 11, as shown in Figure 7, it comprises mount pad 14, and is placed in mount pad 14 in horizontally-opposed a pair clamping cylinder 15, each clamping cylinder 15 drives a clamping head 16 respectively, and these two clamping heads 16 are complementary Y-shaped structure; Mount pad 14 is provided with the hole passed for drilling rod.Two clamping oil cylinders 15, by flexible, ensure that drilling rod can have certain chucking power in centering position after putting into rat hole, and provide clamping torsion for during drilling rod connecting thribble.
As shown in Figure 8, described clamping head 16 forms Y-shaped structure by V-arrangement clamping face 17 and connector 18, stiffener 19 is provided with between V-arrangement clamping face 17 and connector 18, V-arrangement clamping face 17 is stepped, two clamping heads 16 turn upside down assembling mutually, make the long section of arbitrary V-arrangement clamping face 17 can stretch into short section of the other side's V-arrangement clamping face 17, form complementary type clamping.V-arrangement clamping face 17 is provided with the axial anti-skidding serrated face in the same way with drilling rod, drilling rod rotation can be avoided to skid, strengthen the stability of clamping further.
Clamping head 16 simplicity of design, be suitable for drilling rod caliber scope large, appearance and size is compact, and imperial sizing is 2-7/8 " ~ 9-3/4 ", metric system external diameter is about 80mm ~ 250mm.
The clamping torque of clamping cylinder 15: clamping oil cylinder cylinder diameter is d=100mm, drilling rod maximum dimension D=250mm, maximum grip moment T
max=F/2 ÷ Sin55 ° × μ × D × 2=P × S ÷ 2 ÷ Sin55 ° × μ × D × 2=P × d ÷ 2 × d ÷ 2 × 3.14 ÷ Sin55 ° × μ × D × 2=28.37KN.m(wherein F is oil cylinder maximum thrust, μ is the friction system of clamping device, P is design pressure, S is clamping cylinder tube internal diameter), regulate press force by reducing valve.
Described drilling rod elevating stage is installed on the inside of lower rat-hole scabbard 13, and the guide openings 21 that the otic placode 20 of drilling rod elevating stage is offered by lower rat-hole scabbard 13 middle and lower part sidewall is stretched out; Lower rat-hole scabbard 13 upper portion side wall installs the elevating mechanism driving drilling rod lifting of lifting table by holder 28, elevating mechanism comprises assembly pulley, wire rope 29, telescopic adjustment oil cylinder 30, the otic placode 20 of wire rope 29 one end jointed rod elevating stage, the other end is fixed on wedge joint 33 place on holder 28 after walking around assembly pulley, movable pulley 32 in telescopic adjustment oil cylinder 30 push-and-pull assembly pulley, the stroke of wire rope can be amplified by push-and-pull movable pulley 32, thus reach the object taken up room reducing elevating mechanism.Elevating mechanism can in the position of 1.2 meters of range regulation drilling rod elevating stages (i.e. drill steel support face), and the docking location stretching out rat hole by different length drilling rod is identical, adapts to the docking of different length drilling rod.
The lifting force of telescopic adjustment oil cylinder 30 calculates: when hoisting, oil cylinder maximum weighted is F
max=3660Kgf × 2=71736, system pressure is P=16MPa, can calculate lift cylinder cylinder diameter D>=(4 × F/(P) according to formula below)
0.5=(4 × 71736/(× 16))
0.5=61.84mm, according to hydraulic cylinder internal diameter series GB/T2348-1993, selects oil cylinder internal diameter 100mm to meet the demands.
The assembled hydraulic station that above-mentioned clamping cylinder 15 and telescopic adjustment oil cylinder 30 all can be carried by rig provides hydraulic coupling, the design pressure P=16MPa at general assembled hydraulic station, maximum stream flow 120L/min.
Further, as shown in Figure 9 and Figure 10, above-mentioned drilling rod elevating stage comprises drilling rod pallet 22, otic placode connector 23 and buffer spring 24, the side of otic placode connector 23 is fixedly connected with otic placode 20, drilling rod pallet 22 is connected by bolt 25 nut 26 with otic placode connector 23, buffer spring 24 to be sheathed on bolt 25 and between drilling rod pallet 22 and otic placode connector 23, to be provided with the guide strip 27 adapted with the opening size of otic placode connector 23 bottom drilling rod pallet 22.Such design can provide certain stroke surplus for drilling rod, and can, for providing certain buffering when drilling rod falls, avoid drilling rod impaired.
Rig is when drillng operation, and after one section, lower brill, supernumerary segment wanted by drilling rod.In order to reduce in drilling process the supernumerary segment time frequently, nowadays add dynamic rathole.Dynamic rathole after two drilling rods being connected, then hang the drilling well-head on side, is connected with the lower drilling rod bored.
Dynamic rathole two drilling rods connect (connecing thribble) process: first hang in rat hole with suspender by 1 drilling rod, bottom is dropped on drilling rod pallet 22, rat-hole scabbard 11 mouthfuls about 1 meter is stretched out in one end of drilling rod, if extension elongation is inadequate, utilize elevating mechanism to adjust the height of drilling rod pallet 22 until the extension elongation that requires, then clamp drilling rod upper rat-hole scabbard 11 mouthfuls with clamping device centering.Then hang another root drilling rod to dock with the drilling rod in rat-hole scabbard, there is butt tube screw thread drilling rod termination.
This programme completes the docking operation of drilling rod by dynamic rathole, avoid in conventional drilling machine the shortcoming connecing thribble operation and can not carry out with drilling operation simultaneously, the design of dynamic rathole simultaneously can meet the needs of different length scope drilling rod, decrease labour, improve operating efficiency, and by the use to assembly pulley, the Long Distances realizing Mobile buffer with the oil cylinder of little stroke can be realized, reduce equipment cost.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvement or distortion, these improve or distortion also should be considered as protection scope of the present invention.
Claims (4)
1. be applicable to a dynamic rathole device for offshore boring island tubing string docking, comprise paving platform, rat-hole scabbard, drilling rod elevating stage, rat hole mouth of pipe place is provided with clamping device, it is characterized in that:
Described rat-hole scabbard comprises upper, middle and lower segment rat-hole scabbard, and upper rat-hole scabbard is installed on derrick crossbeam, and the two ends up and down of middle rat-hole scabbard are connected with upper rat-hole scabbard, lower rat-hole scabbard with alignment pin respectively by flange;
Described clamping device is installed on the top open part of rat-hole scabbard, and it comprises mount pad, and is placed in horizontally-opposed a pair clamping cylinder in mount pad, and each clamping cylinder drives a clamping head respectively, and these two clamping heads are complementary Y-shaped structure; Mount pad is provided with the hole passed for drilling rod;
Described drilling rod elevating stage is installed on the inside of lower rat-hole scabbard, and the guide openings that the otic placode of drilling rod elevating stage is offered by lower rat-hole scabbard middle and lower part sidewall is stretched out; Lower rat-hole scabbard upper portion side wall installs the elevating mechanism driving drilling rod lifting of lifting table by holder, elevating mechanism comprises assembly pulley, wire rope, telescopic adjustment oil cylinder, the otic placode of wire rope one end jointed rod elevating stage, the other end is fixed on wedge joint place on holder after walking around assembly pulley, the movable pulley in telescopic adjustment oil cylinder push-and-pull assembly pulley.
2. a kind of dynamic rathole device being applicable to the docking of offshore boring island tubing string according to claim 1, it is characterized in that: described clamping head forms Y-shaped structure by V-arrangement clamping face and connector, stiffener is provided with between V-arrangement clamping face and connector, V-arrangement clamping face is stepped, two clamping heads turn upside down assembling mutually, make the long section of arbitrary V-arrangement clamping face can stretch into short section of the other side's V-arrangement clamping face, form complementary type clamping.
3. a kind of dynamic rathole device being applicable to the docking of offshore boring island tubing string according to claim 2, is characterized in that: described V-arrangement clamping face is provided with the axial anti-skidding serrated face in the same way with drilling rod.
4. a kind of dynamic rathole device being applicable to the docking of offshore boring island tubing string according to claim 1, it is characterized in that: described drilling rod elevating stage comprises drilling rod pallet, otic placode connector and buffer spring, the side of otic placode connector is fixedly connected with otic placode, drilling rod pallet is connected by bolt and nut with otic placode connector, buffer spring is sheathed on bolt and between drilling rod pallet and otic placode connector, supporter for drilling rod tray bottom is provided with the guide strip adapted with the opening size of otic placode connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281285.5A CN104929542A (en) | 2015-05-28 | 2015-05-28 | Power rat hole device applicable to butting strings of well drilling platforms |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281285.5A CN104929542A (en) | 2015-05-28 | 2015-05-28 | Power rat hole device applicable to butting strings of well drilling platforms |
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| CN104929542A true CN104929542A (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510281285.5A Pending CN104929542A (en) | 2015-05-28 | 2015-05-28 | Power rat hole device applicable to butting strings of well drilling platforms |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837211A (en) * | 2017-03-04 | 2017-06-13 | 烟台杰瑞石油装备技术有限公司 | A kind of horizontal sliding formula dynamic rathole device |
| CN112096318A (en) * | 2020-08-14 | 2020-12-18 | 四川宏华石油设备有限公司 | Pipe conveying system and conveying method |
| CN113404446A (en) * | 2021-08-18 | 2021-09-17 | 东营金昱技术开发有限公司 | Self-balancing marching type well repair equipment |
| CN109138871B (en) * | 2018-07-31 | 2021-11-30 | 中石化石油工程技术服务有限公司 | Hydraulic clamping and lifting device for rat hole of drilling tool |
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| CN85200440U (en) * | 1985-04-01 | 1986-07-09 | 大港石油管理局科技处 | Clamping device for rat-hole scabbard bit |
| CN201620779U (en) * | 2010-02-10 | 2010-11-03 | 成都世唯科技有限公司 | Mechanism for connecting and disconnecting drill rod and casing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837211A (en) * | 2017-03-04 | 2017-06-13 | 烟台杰瑞石油装备技术有限公司 | A kind of horizontal sliding formula dynamic rathole device |
| CN109138871B (en) * | 2018-07-31 | 2021-11-30 | 中石化石油工程技术服务有限公司 | Hydraulic clamping and lifting device for rat hole of drilling tool |
| CN112096318A (en) * | 2020-08-14 | 2020-12-18 | 四川宏华石油设备有限公司 | Pipe conveying system and conveying method |
| CN112096318B (en) * | 2020-08-14 | 2022-11-11 | 四川宏华石油设备有限公司 | Pipe conveying system and conveying method |
| CN113404446A (en) * | 2021-08-18 | 2021-09-17 | 东营金昱技术开发有限公司 | Self-balancing marching type well repair equipment |
| CN113404446B (en) * | 2021-08-18 | 2021-12-07 | 东营昱辰技术有限公司 | Self-balancing marching type well repair equipment |
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Application publication date: 20150923 |
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