CN2075692U - Inverted u type telescopic derrick - Google Patents

Abstract

The utility model belongs to the technical field of a deep well boring derrick, relating to a telescopic gate type derrick which is composed of a fixed segment, a telescopic segment, a horizontal pulling rod, an inclined pulling rod, a telescopic pulley wheel, rails, a movable joint, an auxiliary frame, a two-layer platform, etc. The telescopic gate type derrick has no the problem of eccentricity because the two rails are arranged at the back side of the telescopic gate type derrick. The utility model has the advantages of reasonable structural design, convenient and rapid installation, reliable and firm connection, and can reduces the workload of installation before drilling and dismantlement carry and after drilling, reduces the labour intensity of workers and saves the production cost.

Description

Inverted U type telescopic derrick

The utility model belongs to deep-well and creeps into the derrick technical field.

At present, be used to creep into the drilling derrick of deep-well and ultradeep well both at home and abroad, mainly contain whole the rising of tower-type headframe, " A " type derrick and " Jiong " type and put three kinds on derrick.Tower-type headframe generally is to adopt section bar such as angle steel channel-section steel etc., by the bolt mother piece by piece up assembly unit get up, when this derrick is moved at every turn except on the smooth solid and ground that do not have any aerial barrage vertically the integral body, generally all be that it is splitted into the loose mail carrying, arrive behind the destination part again and up adorn, operating personnel will (more than 50 meter) operation in the high-altitude during mounting or dismounting, and labour intensity is very big, and abnormally dangerous, time-consuming taking a lot of work.Especially on the winter or ocean of north cold, mounting or dismounting are just difficult and dangerous more.When loose mail is removed in addition, cause easily each rod member distortion, damage, lose, and the damage of attachment bolt nut with lose just more serious.The distortion of rod member not only makes installs the difficulty that becomes, and has reduced the supporting capacity of derrick.Whole the rising of " A " type put derrick, adopts the tubing assembly welding to become the two legs of rectangular cross section, is divided into plurality of sections, installs under the level of ground (low level) by pin, by rig power derrick worked the operated in vertical position state that is raised to then.The same with the tower derrick can only be smooth solid, the whole haul in the area of aerial clear.The location, oil field in general, ground and out-of-flatness, and aerial high-voltage line interweaves as net.Drag derrick and derrick lowering or cut off high-voltage line and lose more than gain for whole, and have a strong impact on the oil field and recover the oil and produce.So after this derrick generally adopts derrick lowering, leg is splitted into several sections resettlements.Because two legs is that tubing is welded into, and can collide inevitably in transit, make tubing that depression and distortion take place.These behaviour's damages can't be repaired and proofread and correct at all, seriously influence its supporting capacity, even the forfeiture supporting capacity, cause derrick to scrap in advance." Jiong " type derrick, its section configuration are " Jiong " font structure that differs in size, and generally use hot rolling i iron (or wide flange steel section or welding I beam) assembly welding to become several sections laminated structures (being that foreleg and back leg are formed sheet by web member).Couple together between their back legs by diagonal member, drag link and pin, also couple together formation " Jiong " font work structuring between sheet and the sheet with pin, the same with " A " type derrick, install the back at low level and rise with the rig dynamic entirety and put.Because its structure is undefined structure, thus with preceding two kinds of derricks mutually weight/power ratio obviously increase, required large-scale crane quantity obviously increases during installation, installs much also time-consuming.Also unavoidably need fall during same the resettlement and break.The shortcoming of above-mentioned three kinds of derricks is conspicuous.

Have both at home and abroad at present to plant and be used for the flexible derrick of light-duty oil-well rig or workover rig shown in figure six.Its cross section also is " Jiong " font, the straight barrel structure of two sections.It is very little that shelves are opened in the front, can't adapt to moving up and down of traveling system.Derrick (well head direction) angle that tilts forward when therefore working is so this derrick also claims the masts type derrick.Service load must be shared fractional load with the canopy rope except derrick itself bears.So supporting capacity is less relatively.Only be applicable to 2000 meters with interior rig or workover rig.On its structure, it is gone up hypomere and links up by wedge block (19) (or water chestnut seat), and tubular telescopic section (18) active force is delivered to tubular canned paragraph (21) by wedge block (19).There is eccentric throw in the thigh position, and supporting capacity is restricted.Again because (21) four legs of canned paragraph are the slide rail of telescopic section (18), so, just be easy to make on the derrick and clamp between the hypomere if generation is turned round partially when flexible.Be subjected to structure influence simultaneously, the general height of this flexible derrick can not satisfy the technological requirement of creeping into deep-well about 30m.

Continuous development along with drilling technology, requirement to drilling equipment is also more and more higher, except that the requirement of satisfying growing new drilling, it is quick and convenient also must to reach installation, reduce and bore preceding installation workload, reduce labor strength and producing cost, but both satisfied drilling technology and the requirement of removal of home fast from being used to creep at present the drilling derrick of deep-well ultradeep well both at home and abroad, not having which kind of derrick to reach.

At present domestic and international various derrick disadvantages, the utility model has designed the flexible derrick of this novel " Jiong " font section.It is positive the same substantially with conventional " Jiong " derrick with side view.It can satisfy the requirement of boring deep-well, ultradeep well, in the time of and the place removal of home of high-voltage line being arranged in the landform of complexity again, carries out whole horizontal or vertical removal of home.And during with the haul of marine drilling or offshore boring island, the invasion that can hide typhoon.

" Jiong " flexible derrick mainly contains canned paragraph (figure three), telescopic section (figure four), drag link (10), diagonal member (9), flexible head pulley and auxilliary positive pulley (5), track (7), active section (12), auxiliary frame (6), quadruple board platform compositions such as (13).Each joint also adopts shaped steel (i iron, welding I beam, wide flange steel section) assembly welding slabbing, links up with attachment pegs (2) with diagonal member (9), drag link (10) between section and section, joint and the joint.Easy for installation.Connect reliable.Two tracks place the derrick back leg to look like figure (five) outward, so just can guarantee the derrick telescopic section neatly to dock and do not have off-centre with canned paragraph, owing to have only two tracks, except the head pulley that bears flexible load, auxilliary positive pulley has also been arranged in the telescopic section both sides, guarantees that telescopic section is capable of expansion and contraction.Derrick gets up to install (or level is flexible install after withdrawal again) at level telescopic section and canned paragraph cover.Or after integral body hauls new well location, can adopt multiple mode that it is hoisted into plumbness (and conventional " Jiong " type, " A " type derrick must can rise with rig power and put), because orthocenter is much far away than new design derrick from fulcrum during the derrick level, it is much bigger far away to play lift.After derrick erects, by flexible block pulley system (4) telescopic section has slowly been stretched, the at this moment flexible motion principle of head pulley (5) in track moves the same in slideway with forklift, forklift frame.Telescopic section rises and is raised to certain altitude and just active section is opened automatically.Treat telescopic section put in place the back it active section resets to nature under resetting-mechanism (14) effect opening again, dock together with telescopic section (a little higher than active section of telescopic section), and put on attachment pegs and fix, at this moment the rig front shape is stressed the same with routine " Jiong " derrick.The thigh position is alignment, continuous.During resettlement, earlier telescopic section is mentioned slightly, active section (12) is outwards opened, telescopic section just can be contracted down smoothly, after waiting to fix, can vertically haul,, at this moment haul much more steady than aforementioned three kinds of derricks because center of gravity reduces.Also can whole withdrawal level, hauled by the exclusive trail car level after falling, derrick is distorted, bending is sent out change and caused damage and can not make, at this moment can carry out remote integral moving, all dismounting at every turn when this generally speaking thus derrick is moved, reduce labor strength, saved producing cost.If on marine drilling platform, running into typhoon (or in platform haul) can withdraw telescopic section, reduces the derrick center of gravity and reduces wind area, has improved its safety, and this derrick is that other any large-scale derrick is incomparable.Now that description of drawings is as follows:

Figure one, rig front figure

Figure two, derrick side view

Figure three, derrick canned paragraph front view

Figure four, derrick telescopic section front view

Figure five, derrick canned paragraph section (overlook and cut open) figure

Figure six, light-duty flexible rig front sketch

1, joint, 2, attachment pegs on the telescopic section, 3, save under the telescopic section, 4, flexible block pulley 5, flexible head pulley and auxilliary positive pulley, 6, auxiliary frame, 7, track, 8, save on the canned paragraph, 9, diagonal member, 10, drag link, 11, the following joint of canned paragraph, 12, active section, 13, quadruple board platform, 14, open resetting-mechanism, 15, position-limit mechanism, 16, derrick foreleg, 17, the derrick back leg, 18, the tubular telescopic section, 19, wedge block (water chestnut seat), 20, pin, 21, the tubular canned paragraph.

The utility model is compared with prior art, reasonable in design, install quick and convenient, connect solid and reliable, can reduce remove after installing before boring and boring, the workload of resettlement, can reduce labour intensity again, save producing cost.

Claims (3)

1, a kind of deep-well creeps into derrick, mainly form by canned paragraph and telescopic section, it is characterized in that at the back fan of canned paragraph two slideways being installed, telescopic section back is equipped with not only lifting but also plays the pulley of centralizing function, and the derrick telescopic section is flexible by itself pulley and the slideway on the canned paragraph.

2, derrick according to claim 1, when it is characterized in that derrick is in running order, four thigh connection place end faces of canned paragraph and telescopic section align, the zero lap section, the center line of four thighs is continuous separately.

3, derrick according to claim 1 is characterized in that the thigh center lines constitute behind the thigh or two before two front or back geometry are trapezoidal, and preceding thigh is approximately square with the side view that constitutes with the rear flank thigh.

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