A kind of hoisting system of oil-well rig
Technical field
The present invention relates to oil exploration equipment, propose especially a kind of new petroleum drill machine hoisting system simple in structure, easy for installation.
Background technology
Drilling floor surface is ingredient important in oil-well rig equipment, and its major function is parts indispensable in the drilling process such as placing rotary disk, driller house, winch.The area of drilling floor surface own is little, place essential equipment after remaining space very compact, in like this narrow space operation, be easy to have an accident.
Oil-well rig need to just can reach vertical duty by hoisting system in initial installation site, as depicted in figs. 1 and 2, in tradition hoisting system, derrick 5` and base 3` adopt with rising form, be that derrick 5` and base 2` rely on pin otic placode to be connected to an integral body, the pulling force while derrick telescoping 5` and the base 2` that rely on big lifting rope 4`, now big lifting rope 4` has born derrick 5` and the coefficient load of base 2`.The large rope 3` of drilling well one end is connected on winch, and the other end is connected on tourist bus after walking around the overhead traveling crane on pulley on man-like shelf 1` and derrick 5` top.Man-like shelf 1` in traditional hoisting system highly surpasses drilling floor surface, and man-like shelf 1` has just taken a part of floor space like this, makes originally compacter with regard to narrow and small drilling floor surface.
The man-like shelf 1` of traditional structure as shown in Figures 2 and 3, wherein, left front supporting leg 9` is connected with left back supporting leg 10`, right front supporting leg 14` is connected with right back supporting leg 13`, between two supporting legs in two, left side supporting leg and the right, be provided with a cross bearer 12`, the two ends of cross bearer 12` are respectively provided with a cantilever hanging wheel 11`.Just because of above-mentioned man-like shelf height, higher than drilling floor surface, is restricted the height of part drill floor equipment.In addition, traditional oil-well rig is under the operating mode that hoists, and tourist bus can be up gradually along with what hoist, and this just requires derrick to reach a certain height, and to tourist bus, leaves enough safe distances, prevents that tourist bus collision overhead traveling crane from causing the accident.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and the hoisting system of using on a kind of new petroleum drill machine is provided.Oil-well rig hoisting system of the present utility model is wanted to guarantee under the state normally hoisting, increase the usable area of drilling floor surface, and will keep to tourist bus, leaving enough safe distances under prerequisite that derrick height is constant, must increase the safety factor of big lifting rope.
In order to reach foregoing invention object, the technical scheme that the utility model provides is as follows:
A kind of hoisting system of oil-well rig, in this oil-well rig, include derrick, overhead traveling crane, tourist bus and base, top at derrick is provided with overhead traveling crane, on derrick, be also provided with tourist bus moving up and down, hoisting system includes the large rope of drilling well and big lifting rope, it is characterized in that, described base is provided with man-like shelf, the height of drilling floor surface when the height of this man-like shelf hoists lower than base, described derrick and base junction are the cantilever pulley that hoists, the large rope of described drilling well one end is located on winch, and the other end is walked around described overhead traveling crane and tourist bus and is fixed on derrick; When needs derrick telescoping, one end of described big lifting rope is fixedly connected on the hook of described tourist bus bottom, and fixed pulley, the freely-supported pulley on derrick and cantilever pulley that the other end is walked around on described man-like shelf are successively fixed on derrick; When needs hoist base, one end of described big lifting rope is fixedly connected on the hook of described tourist bus bottom, the cantilever pulley that hoists, the fixed pulley on described man-like shelf that the other end is walked around on freely-supported pulley on derrick and cantilever pulley, base are successively fixed on one and hoist on fixed point, and the described fixed point that hoists is arranged on base.
In the hoisting system of the utility model oil-well rig, described man-like shelf includes left back supporting leg, left front supporting leg, right back supporting leg, right front supporting leg, described left back leg length equals the length of right back supporting leg, the length of described left front supporting leg equals the length of right front supporting leg, and the length of left back supporting leg is greater than the length of left front supporting leg, at the top of described left back supporting leg and right back supporting leg, be fixed with respectively a fixed pulley, the below of fixed pulley on left back supporting leg is fixed at the top of described left front supporting leg, the below of fixed pulley on right back supporting leg is fixed at the top of described right front supporting leg, between described left front midleg and left back midleg, be provided with support bar, between described right anterior branch midleg and right back midleg, be provided with support bar.
Based on technique scheme, driller Hoisting System of the present utility model has compared with prior art obtained following technique effect:
1. in hoisting system of the present utility model, man-like shelf left and right thigh has been carried out to structure optimization, make it stability better, reduced the height of man-like shelf, make it the height lower than oil rig drill floor face, guaranteeing, under the state normally hoisting, to increase the usable area of liking drilling floor surface.
2. in hoisting system of the present utility model, adopt the method for continuous lifting, derrick telescoping first, the base that then hoists, when hoisting, big lifting rope stressed is just reduced to original half like this, increased the safety of big lifting rope, improves safety factor.
3. when hoisting system of the present utility model is worked, after derrick lifting completes, need below tourist bus, allow big lifting rope pass the cantilever pulley that hoists on base, the utilization cantilever pulley driving base that hoists rises, because the height of drilling well is determined, adopt and first transfer after tourist bus, then the process raising has just increased the safe distance of tourist bus.
Accompanying drawing explanation
The composition view before hoisting of the hoisting system of Tu1Shi prior art PetroChina Company Limited. rig.
The view that the structure of the hoisting system of Tu2Shi prior art PetroChina Company Limited. rig has hoisted.
The structure elevation of man-like shelf in the hoisting system of Tu3Shi prior art PetroChina Company Limited. rig.
The structure side view of man-like shelf in the hoisting system of Tu4Shi prior art PetroChina Company Limited. rig.
Fig. 5 is that the hoisting system of the utility model oil-well rig structure before hoisting forms schematic diagram.
Fig. 6 is the magnifying state figure at label I place in Fig. 5.
Fig. 7 is the magnifying state figure at label II place in Fig. 5.
Fig. 8 is the complete big lifting rope wire rope handling of derrick lifting view in the utility model oil-well rig hoisting system.
Fig. 9 is that the structure of man-like shelf in the hoisting system of the utility model oil-well rig forms elevation.
Figure 10 is that the structure of man-like shelf in the hoisting system of the utility model oil-well rig forms lateral view.
Figure 11 is the view that the structure of the hoisting system of the utility model oil-well rig has hoisted.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment, the hoisting system of the utility model oil-well rig is elaborated further, in the hope of being more expressly understood that its structure forms and working method, but can not limits protection domain of the present utility model with this.
First please see Figure 5, Fig. 5 is the structure composition schematic diagram of the hoisting system of the utility model oil-well rig.The utility model belongs to the hoisting system that a kind of new petroleum drill machine is used, similar to oil-well rig of the prior art, in newly-designed oil-well rig, include derrick 19, overhead traveling crane, tourist bus and base 15, top at derrick 19 is provided with overhead traveling crane, on derrick 19, be also provided with tourist bus moving up and down, in hoisting system, also include the large rope 18 of drilling well and big lifting rope 17.
As a new outstanding design, on the base 15 of the utility model oil-well rig, be provided with novel man-like shelf 16, the height of drilling floor surface when the height of this man-like shelf 16 hoists lower than base 15, like this after rig rises, drilling floor surface on base 15 is higher than the height of man-like shelf 16, this has just reduced the area of the shared drilling floor surface of hoisting system, increases the usable area of drilling floor surface.
As shown in Figure 6 and Figure 7, above-mentioned derrick 19 is provided with the cantilever pulley 20 that hoists with base 15 junctions, and the position near man-like shelf top on derrick 19 is provided with freely-supported pulley 22 and cantilever pulley 21.In hoisting system of the present utility model, one end of the large rope 18 of drilling well is located on winch, and the other end is walked around a fixed point that is fixed on derrick after the overhead traveling crane on derrick top and the tourist bus on derrick.When needs derrick telescoping, one end of described big lifting rope 17 is fixedly connected on the hook of tourist bus bottom, and the other end is fixed on a fixed point of derrick after walking around successively fixed pulley 23, the freely-supported pulley 22 on derrick 19 and the cantilever pulley 21 on described man-like shelf 16.
Hoisting system of the present utility model, after installing, starts winch, and first derrick telescoping 19, when 19, derrick is raised to operating position, is stamped derrick 19 with the pin that man-like shelf 15 is connected.In the ban derrick telescoping complete after, as shown in Figure 8, in the time of need to hoisting base, tourist bus on derrick 19 segment distance that first declines, then one end of big lifting rope 17 is fixedly connected on the hook of described tourist bus bottom, the other end is walked around freely-supported pulley 22 and the cantilever pulley 21 on derrick 19 successively, and then through the cantilever pulley 20 that hoists on base 15, after fixed pulley 23 on man-like shelf 16, be fixed on one and hoist on fixed point, the described fixed point that hoists is also arranged on base 15.Continue to hoist base 15 until operating position, then stamp the pin between base 15 and derrick 19.
Please see Figure again 9 and Figure 10, above-mentioned man-like shelf includes left back supporting leg 24, left front supporting leg 25, right back supporting leg, right front supporting leg, described left back leg length equals the length of right back supporting leg, the length of described left front supporting leg equals the length of right front supporting leg, and the length of left back supporting leg 24 is greater than the length of left front supporting leg 25, at the top of described left back supporting leg and right back supporting leg, be fixed with respectively a fixed pulley 23, the below of fixed pulley on left back supporting leg is fixed at the top of described left front supporting leg, the below of fixed pulley on right back supporting leg is fixed at the top of described right front supporting leg, between described left front midleg and left back midleg, be provided with support bar, between described right anterior branch midleg and right back midleg, be provided with support bar.
Man-like shelf in novel hoisting system of the present utility model has been cancelled the cross bearer in traditional man-like shelf structure, and man-like shelf left and right thigh in novel hoisting system has been carried out to structure optimization, makes it stability better.Because traditional man-like shelf can cause the area of drilling floor surface to reduce higher than drilling floor surface, and in novel hoisting system owing to having reduced the height of man-like shelf, make it lower than oil rig drill floor face, thereby increased the area of drilling floor surface.In addition, hoisting system of the present utility model is derrick and base) the pin otic placode that is connected between the two changes to the cantilever pulley that hoists, and the original pulley structure on derrick is suitably adjusted into new freely-supported pulley and cantilever pulley simultaneously.
Hoisting system of the present utility model is the method that adopts continuous lifting at work, i.e. then derrick telescoping first utilizes the cantilever pulley that the hoists base that hoists.This advantage mainly contains following two kinds: 1) compare traditional hoisting system, big lifting rope stressed is kept to original half.2) after derrick completes and hoists, need transfer tourist bus, allow big lifting rope pass and hoist after cantilever pulley, utilize the cantilever pulley driving base that hoists to hoist, the process of now transferring tourist bus has increased safe distance.Traditional hoisting system is that derrick and base hoist simultaneously, in the process that hoists, cannot transfer tourist bus.Therefore novel hoisting system is compared traditional hoisting system, increased the safe distance after having hoisted, in other words, novel hoisting system can reduce the height of derrick.