CN201013249Y - Novel oil-well rig lifting foundation - Google Patents

Abstract

The utility model relates to a novel oil well rig lifting base, which consists of a drill floor body and an elevating mechanism. The drill floor body consists of an upper floor surface, an underplate and four upright posts articulated between four corners of the upper floor surface and the underplate. The elevating mechanism consists of a left elevating device and a right elevating device which are the same and are symmetrically arranged. Each of the left elevating device and the right elevating device comprises a multilevel telescopic hydraulic cylinder, follow-up telescopic struts and a multilevel telescopic hydraulic cylinder. The follow-up telescopic struts are articulated between the upper floor surface and the underplate in a cross shape. The follow-up telescopic struts are of inner and outer tube enclosing structure. The inner tube is provided with a spacing shoulder to restrict the inner tube from keeping on retracting when the upper floor surface rises to the highest position. Guide pins are arranged in knock holes between the inner tube and the outer tube. The base is lifted stably, has simple structure, is light; and the lifting load is small. By adopting the utility model, drills can be moved quickly; the cost to manufacture, install and transport the rig base is reduced.

Description

A kind of nonpetroleum rig base that hoists

Technical field

The utility model relates to the oil drilling equipment technical field, particularly a kind of nonpetroleum rig base that hoists.

Background technology

The oil-well rig base is used to install derrick, winch, rotating disk, puts drilling rod and rig tool etc., and the installing space of wellhead assembly and the operating platform of drillng operation are provided.The deep-well oil-well rig is used increasingly extensive at present, the deep drilling rig general requirements provides bigger well head space, to satisfy well head the well control system is installed, thereby the requirement of the safety of down-hole when improving drillng operation, thereby rig substructure daylight opening DLO ground level generally can be less than 7.5 meters, all between 9.5 to 10.5 meters, the deep drilling rig base adopts the mounting method of routines such as crane installation to be difficult to meet the demands to most of rig substructure daylight opening DLO ground levels.Therefore now the employing with derrick one of deep drilling rig base reinstated the form of structure that winch hoists or falls more, hoist or when falling, there is the unstable impact load that easily forms of speed, cause derrick base to play the big problem of load up, simultaneously owing to play load up considerably beyond live load, for having satisfied the requirement of strength of load up, complex structure, weight increase during base designs, and the increase of base weight brings the increase of manufacturing, installation and cost of transportation again.Excessive load up also causes certain hidden danger to safety in production.

Summary of the invention

The purpose of this utility model provides a kind of nonpetroleum rig stable, simple in structure, that weight is lighter base that hoists that falls that hoists.

The scheme that the utility model is taked is: a kind of nonpetroleum rig base that hoists, form by rig floor body and elevating mechanism, it is characterized in that: described rig floor body is by upper table surface, pedestal and four columns that are hinged between four jiaos of upper table surfaces and the pedestal constitute, described elevating mechanism is by an identical symmetrically arranged left side, right lifting gear is formed, a left side, right lifting gear includes the multi-stage expansion hydraulic cylinder, the servo-actuated telescopic strut, the multi-stage expansion hydraulic cylinder, the servo-actuated telescopic strut is cross-shaped to be hinged between upper table surface and the pedestal, in the servo-actuated telescopic strut is, the outer tube sleeve assembling structure, have on pipe in it when upper table surface rise limit when rising to the extreme higher position in pipe continue the spacing shoulder of withdrawing, have corresponding upper table surface on the interior pipe and rise and fall the dowel hole of two positions when putting in place, have on the outer tube and the corresponding dowel hole of interior pipe dowel hole, in, in the dowel hole between the outer tube alignment pin is housed.

The column of described rig floor body is the twin columns frame construction that connects by cross bar, and described servo-actuated telescopic strut is the double-rod structure that connects by cross bar, and the multi-stage expansion hydraulic cylinder is between two bars of servo-actuated telescopic strut.

The utility model makes the derrick that is installed in rig floor body upper table surface do the parallelogram displacement with upper table surface and hoists by the effect of multi-stage expansion hydraulic cylinder, the servo-actuated telescopic strut hoists to put in place at upper table surface and afterwards limits its continuation displacement, penetrate alignment pin on the servo-actuated telescopic strut, base just is in steady-working state.Base hoists steadily, and the process of hoisting does not have impact load, and it is little to play load up, and base designs is simple in structure, and weight is lighter relatively.Hoist and dropping process in, operating personnel can carry out Long-distance Control by hydraulic system, do not need operating personnel on the rig floor, have improved safety guarantee; Base is quick for installation, and is light relatively, can realize the quick movement of rig, reduced manufacturing, installation and the cost of transportation of rig substructure.

Description of drawings

Fig. 1 is the utility model structural representation when falling

Fig. 2 is the utility model back structural representation when in running order that puts in place that hoists

Fig. 3 is Fig. 2 lateral view

Fig. 4 is the partial enlarged drawing of servo-actuated telescopic strut among Fig. 1

Fig. 5 is the enlarged drawing of Y part among Fig. 2

The specific embodiment

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the nonpetroleum rig base that hoists is made up of rig floor body and elevating mechanism, the rig floor body is made of upper table surface 1, pedestal 2 and four columns 3 being hinged between 1 four jiaos of upper table surfaces and the pedestal 2, column 3 is the twin columns frame construction that connects by cross bar, elevating mechanism is made up of identical left and right symmetrically arranged a pair of lifting gear, each lifting gear is made up of multi-stage expansion hydraulic cylinder 4, servo-actuated telescopic strut 5, and multi-stage expansion hydraulic cylinder 4 tilts to be hinged between upper table surface 1 and the pedestal 2.Servo-actuated telescopic strut 5 is in two, the double-rod structure that the single pole of outer tube suit connects into by cross bar, servo-actuated telescopic strut 5 and multi-stage expansion hydraulic cylinder 4 cross-shaped being hinged between upper table surface 1 and the pedestal 2, multi-stage expansion hydraulic cylinder 4 is positioned in the middle of two bars of servo-actuated telescopic strut 5, have pipe 5a in when 1 of upper table surface rises to the extreme higher position and is the operating position, limiting on the interior pipe 5a of servo-actuated telescopic strut 5 and in outer tube 5b, continue the spacing shoulder 5c that withdraws, have corresponding upper table surface 1 on the interior pipe 5a and rise and fall the dowel hole of two positions when putting in place, have the dowel hole corresponding on the outer tube 5b with the dowel hole of interior pipe 5a, in, alignment pin 6 is housed in the dowel hole between the outer tube.Derrick 7 is installed on the upper table surface 1.

Upper table surface is used to install derrick, the deadweight of the hook load when bearing drillng operation, derrick, deposits the drilling well rig tool and provides the operation place for the drillng operation personnel.The loading transfer that upper table surface was subjected to when pedestal was used for drillng operation is to the basis.Column is used for upper table surface and pedestal are coupled together, and the operation height of large space is provided, the requirement of headway when satisfying drillng operation.

Installation process: as shown in Figure 1, rig floor base transportation and install before be full state, carry out after the derrick low level installs in the well site, the winch by rig rises derrick is whole, and derrick uprightly is fixedly mounted on the base upper table surface.As Fig. 1, Fig. 2, shown in Figure 3, handle a left side synchronously, right multi-stage expansion hydraulic cylinder piston stretches out, the multi-stage expansion hydraulic cylinder applies the active force of upper right side direction to upper table surface, making upper table surface do the parallelogram displacement together with derrick to the upper right side hoists, the servo-actuated telescopic strut is withdrawn in outer tube with the pipe that hoists in it of upper table surface, when upper table surface is moved to the extreme higher position and is the operating position, pipe continued withdrawal in locating shoulder on the interior pipe of servo-actuated telescopic strut limited, thereby limit upper table surface and continue displacement, controlling the multi-stage expansion hydraulic cylinder piston simultaneously stops to stretch out, penetrate alignment pin between the internal and external casing of servo-actuated telescopic strut, base just is in steady-working state.

Unloading process: under the upright duty of base, remove the internal and external casing alignment pin of servo-actuated telescopic strut, handle the withdrawal of multi-stage expansion liquid cylinder piston, upper table surface and derrick are under the effect of gravity and multi-stage expansion hydraulic cylinder piston, the parallelogram displacement is done in the below left, and until the lowering position that drops to upper table surface, the multi-stage expansion hydraulic cylinder quits work, penetrate alignment pin between the internal and external casing of servo-actuated telescopic strut, base is in transportation and preceding state is installed.

Claims (2)

1. nonpetroleum rig base that hoists, form by rig floor body and elevating mechanism, it is characterized in that: described rig floor body is by upper table surface (1), pedestal (2) and four columns (3) that are hinged between (1) four jiao of upper table surface and the pedestal (2) constitute, described elevating mechanism is by an identical symmetrically arranged left side, right lifting gear is formed, a left side, right lifting gear includes multi-stage expansion hydraulic cylinder (4), servo-actuated telescopic strut (5), multi-stage expansion hydraulic cylinder (4), servo-actuated telescopic strut (5) is cross-shaped to be hinged between upper table surface (1) and the pedestal (2), in servo-actuated telescopic strut (5) is, outer tube (5a), (5b) sleeve structure, have on the pipe (5a) in it when upper table surface (1) rise limit when rising to the extreme higher position in pipe (5a) continue the spacing shoulder (5c) of withdrawing, have corresponding upper table surface (1) on the interior pipe (5a) and rise and fall the dowel hole of two positions when putting in place, have on the outer tube (5b) and the corresponding dowel hole of interior pipe dowel hole, in, outer tube (5a), alignment pin (6) is housed in the dowel hole (5b).

2. the nonpetroleum rig base that hoists according to claim 1, it is characterized in that: the twin columns frame construction of the column of described rig floor body (3) for connecting by cross bar, described servo-actuated telescopic strut (5) is the double-rod structure that connects by cross bar, and multi-stage expansion hydraulic cylinder (4) is positioned between two bars of servo-actuated telescopic strut (5).

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