CN109611031B - Independent hydraulic telescopic derrick - Google Patents
Independent hydraulic telescopic derrick Download PDFInfo
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- CN109611031B CN109611031B CN201811444299.4A CN201811444299A CN109611031B CN 109611031 B CN109611031 B CN 109611031B CN 201811444299 A CN201811444299 A CN 201811444299A CN 109611031 B CN109611031 B CN 109611031B
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- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000008439 repair process Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 56
- 239000011148 porous material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/003—Supports for the drilling machine, e.g. derricks or masts adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
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Abstract
The invention provides an independent hydraulic telescopic derrick, which comprises a derrick lower section, a derrick middle section and a derrick upper section which are mutually sleeved, wherein a middle section telescopic oil cylinder is arranged between the derrick lower section and the derrick middle section, and an upper section telescopic oil cylinder is arranged between the derrick middle section and the derrick upper section. Through adopting above scheme, can overcome the defect among the prior art, transport length is littleer, and road transportation performance is better. The total length of the three-section telescopic derrick with the clear height of 29 meters after the upper section and the middle section are retracted to the lower section in a transportation state is only 12.8 meters, and is 2.2 meters shorter than the transportation length of the upper section and the middle section. During transportation, the upper section and the middle section of the derrick are recovered into the lower section of the derrick, the derrick is lifted by using a crane to be connected with a derrick foundation embedded in an anchor pit near a wellhead in a pin joint mode, the whole derrick is lifted to a state of about 85 degrees with the ground in a horizontal state by using the crane again, a guy rope is pulled, a telescopic oil cylinder is controlled to sequentially extend out of the middle section and the upper section, and the crawler-type tractor hoist is in place to carry out well repair operation.
Description
Technical Field
The invention relates to the field of derrick for well repair in the petroleum and gas industry, in particular to an independent hydraulic telescopic derrick.
Background
At present, self-propelled vehicle-mounted workover rig is mainly adopted in workover equipment in the petroleum and gas industry. However, most of oil and gas wells in the four-river oil fields, the Changqing oil fields and other places in China are located in mountainous areas and hilly lands, the road transportation conditions of the oil areas are poor, and the conventional self-propelled vehicle-mounted workover rig has poor passing performance and cannot adapt to the working environment of the areas due to the cross-country capacity, turning radius and the like.
According to research and analysis, the oil area adopts the following main solution to solve the problem: a crawler-type tractor hoist with excellent trafficability replaces a winch of a conventional workover rig, a free-standing two-section pin-connected or bolted derrick is matched, the clearance height of the derrick is 29m, two sections are folded during transportation and dragged by a flat trailer, an upper section and a lower section are connected together by using a crane during operation, then the upper section and the lower section are lifted to a bracket of a special derrick vertical placing vehicle, a lifting oil cylinder on the derrick vertical placing vehicle is used for pushing the bracket to lift the derrick in place, then a guy rope is tied up, the derrick vertical placing vehicle retracts the bracket and then automatically drives away, and the crawler-type tractor hoist is in place to carry out workover operation. For example, a large-space telescopic derrick described in chinese patent document CN 2769489Y.
The main problems with this solution are as follows:
1. the independent two-section pin-jointed or bolted derrick has larger transportation length. Two sections of derrick with clear height of 29m are in pin joint or bolt joint, the total length of the two sections is about 15 m in a transportation state after being folded, and the requirement on turning radius is high;
2. the process of connecting the upper derrick and the lower derrick wastes time and labor, has poor safety and is difficult to lift;
3. the process of hoisting the derrick to the bracket of the derrick vertical placement vehicle is time-consuming, labor-consuming and poor in safety;
4. the cost of the equipped derrick vertical placing vehicle is high. The conventional derrick vertical placing vehicle mainly comprises a second-class chassis, a hydraulic oil tank, a front support, a rear support, a derrick bracket, a lifting oil cylinder, a locking oil cylinder, an adjusting oil cylinder and the like, and the cost is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing an independent hydraulic telescopic derrick, which can shorten the transportation length of the derrick, greatly reduce the erection difficulty of the derrick and reduce the lifting operation difficulty of the derrick.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a kind of independent hydraulic telescopic derrick includes lower derrick section, middle derrick section and upper derrick section which are mutually sleeved, a middle telescopic oil cylinder is set between the lower derrick section and the middle derrick section, and an upper telescopic oil cylinder is set between the middle derrick section and the upper derrick section.
In a preferred scheme, the cross section of the lower section of the derrick comprises two lower section side trusses and a lower section bottom truss, and the lower section bottom truss is fixedly connected with the end head of the lower section side truss;
the cross section of the middle section of the derrick comprises two middle section side trusses and a middle section bottom truss, the middle section bottom truss is fixedly connected with a position close to the end head of the middle section side truss, the cross section of the middle section of the derrick is H-shaped, and a middle section telescopic oil cylinder is positioned between the lower section bottom truss and the middle section bottom truss;
the cross section of the upper section of the derrick comprises two upper section side trusses and an upper section bottom truss, the upper section bottom truss is fixedly connected with a position close to the end head of the upper section side truss, the cross section of the upper section of the derrick is H-shaped, and an upper section telescopic oil cylinder is positioned between a middle section bottom truss and the upper section telescopic oil cylinder;
the cross sections of the upper section and the middle section of the derrick are H-shaped, so that a larger position space for installing the telescopic oil cylinder is obtained, and the reliable stress condition is improved.
In the preferred scheme, a lower-section bottom limiting rod and a lower-section top limiting rod are respectively arranged at two ends of the inner side of the lower-section side truss;
the two ends of the middle section side truss are respectively provided with a middle section bottom limiting rod and a middle section top limiting rod, the lower section bottom limiting rod is in sliding contact with the middle section bottom limiting rod, and the lower section top limiting rod is in sliding contact with the middle section top limiting rod;
the inner free end of the middle section side truss is provided with a middle section first limiting rod, the middle section bottom truss is provided with a middle section second limiting rod, the two ends of the upper section side truss are respectively provided with an upper section top limiting rod and an upper section bottom limiting rod, the middle section first limiting rod is in sliding contact with the upper section top limiting rod, and the middle section second limiting rod is in sliding contact with the upper section bottom limiting rod.
In the preferable scheme, an upper section telescopic oil cylinder is arranged between a middle section of the derrick and an upper section of the derrick, and an oil cylinder guide device is also arranged, wherein two upper guide swing arms are positioned at two sides of the upper section telescopic oil cylinder in the oil cylinder guide device, the upper guide swing arms are hinged with an upper guide swing seat fixedly arranged at the middle section of the derrick, and the free ends of the upper guide swing arms are provided with upper guide rings;
an upper guide tension spring is arranged between the upper guide swing arm and the derrick middle section;
the upper guide swing arm is provided with an upper guide collision block, an upper guide sliding rail is fixedly arranged on the upper section of the derrick and is in sliding contact with the guide collision block, so that the upper guide swing arm is in an open state in a partial stroke of jacking of the upper section of the derrick, and the guide ring is closed to embrace the upper section telescopic oil cylinder in the partial stroke.
In the preferable scheme, two middle-section telescopic oil cylinders are arranged between the lower section of the derrick and the middle section of the derrick, and an oil cylinder guide device is also arranged, wherein a middle guide swing arm positioned in the middle is hinged with a lower-section bottom truss of the lower section of the derrick, middle side guide swing arms positioned on two sides are hinged with a lower-section side truss of the lower section of the derrick, and free ends of the middle guide swing arms and the middle side guide swing arms are provided with middle guide rings;
the middle guide swing arm is connected with the lower derrick section through a middle guide tension spring;
the middle section of the derrick is also provided with a middle guide slide rail which is in sliding contact with the middle guide swing arm and the middle side guide swing arm so that the middle guide swing arm and the middle side guide swing arm are in an open state in a partial stroke of jacking of the middle section of the derrick, and the middle guide ring is folded to embrace the middle section telescopic oil cylinder in the partial stroke.
In the preferable scheme, a lock pin device is arranged at the position of the lower section of the derrick, which is close to the top end, wherein a rotating pin seat is fixedly connected with the lower section of the derrick, one end of a rotating pin is hinged with the rotating pin seat, the rotating pin is L-shaped, a protruding part is arranged outside the middle bending part of the rotating pin, one end of a lock pin cylinder is connected with the protruding part, the other end of the lock pin cylinder is fixedly connected with the lower section of the derrick, and when the lock pin cylinder retracts, the free end of the rotating pin extends into the lower section of the derrick.
In the preferred scheme, a self-locking device is arranged at the position of the upper section of the derrick, which is close to the bottom end, wherein one end of a self-locking wedge block respectively positioned at two sides of the self-locking device is hinged with the upper section of the derrick, the self-locking wedge block is L-shaped, the bent outer part of the middle part of the self-locking wedge block is hinged with one end of a self-locking push rod, the other end of the self-locking push rod is hinged with a self-locking swing rod, the middle part of the self-locking swing rod is hinged with the upper section of the derrick, and the self-locking swing rod is also connected with the upper section of the derrick through;
the free end of the self-locking wedge block is provided with a wedge surface, so that the upper section of the derrick can slide away in the jacking process and form a support in the falling process;
the derrick structure is characterized by further comprising a rotating pin, the rotating pin is hinged with the derrick upper section (3), a hook head is arranged at the top end of the rotating pin, a pin is arranged on the self-locking wedge block (71), and the rotating pin is used for hooking the pin of the self-locking wedge block (71) when the self-locking wedge block (71) contracts, so that the position of the self-locking wedge block (71) is locked, and the derrick upper section (3) can conveniently descend.
In the preferred scheme, still be equipped with anti-vibration device in the end position of festival under the derrick and in the derrick, anti-vibration device be located the position of being close to the end truss, anti-vibration device in, anti-vibration crossbeam and end truss sliding connection, one side of anti-vibration crossbeam sets firmly and is used for inserting the anti-vibration voussoir between the gag lever post, the anti-vibration crossbeam passes through the anti-vibration extension spring and is connected with end truss, is equipped with between anti-vibration crossbeam and end truss and breaks away from the jar.
In the preferred scheme, the bottom of the lower section of the derrick is hinged with a derrick foundation, and one side of the lower section of the derrick is connected with a derrick diagonal brace, so that the whole derrick is inclined by 3-8 degrees.
In the preferred scheme, the whole derrick is connected with a guy rope assembly;
a hanging bracket assembly is arranged at the top of the upper section of the derrick;
an operating platform is arranged in the derrick.
The invention provides an independent hydraulic telescopic derrick, which has the following beneficial effects by adopting the scheme:
1. the defects in the prior art can be overcome, the transport length is shorter, and the road transport performance is better. The total length of the three-section telescopic derrick with the clear height of 29 meters after the upper section and the middle section are retracted to the lower section in a transportation state is only 12.8 meters, and is 2.2 meters shorter than the transportation length of the upper section and the middle section.
2. The installation process of the invention is more convenient and safer. The independent hydraulic telescopic derrick is characterized in that an upper derrick section and a middle derrick section are recovered into a lower derrick section during transportation, a crane is used for assisting in hoisting the derrick during operation and is in pin joint with a derrick foundation embedded in an anchor pit near a wellhead, the crane is used again for hoisting the whole derrick from a horizontal state to a state of about 85 degrees with the ground, a guy rope is pulled, a telescopic oil cylinder is controlled to sequentially extend out of the middle and upper sections, and a crawler-type drifting machine is in place to carry out well repairing operation.
3. The hydraulic station and the telescopic oil cylinder which are equipped by the invention are much more economical than the derrick vertical placement vehicle. The platform trailer, the crane, the hydraulic station and the derrick vertical placing vehicle can realize the sharing of multiple well positions, and can finish the transportation, lifting and lowering operation of the derrick in a one-to-many way. Therefore, when the cost of the independent two-section pin-jointed or bolted derrick is compared with that of the three-section independent hydraulic telescopic derrick, the difference is that the independent two-section pin-jointed or bolted derrick needs to be equipped with a special derrick vertical placement vehicle, but the independent hydraulic telescopic derrick only needs to be equipped with a hydraulic station and a telescopic oil cylinder for derrick lifting, so that the cost can be greatly saved.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic structural diagram of the present invention during hoisting.
Fig. 2 is a schematic structural diagram after the installation of the present invention is completed.
Fig. 3 is a schematic cross-sectional view of the present invention.
Fig. 4 is a schematic structural view of the oil cylinder guide device between the derrick middle section and the derrick upper section when the oil cylinder guide device is folded.
Fig. 5 is a schematic structural view of the oil cylinder guide device between the derrick middle section and the derrick upper section in the invention when expanded.
FIG. 6 is a schematic sectional view taken along line B-B in FIG. 5.
FIG. 7 is a schematic sectional view taken along line A-A in FIG. 4.
Fig. 8 is a schematic front view of the oil cylinder guide device between the lower section and the middle section of the derrick in the invention.
Fig. 9 is a schematic front view of the oil cylinder guide device between the lower section and the middle section of the derrick in the invention.
Fig. 10 is a schematic structural view of the middle guide swing arm in the middle guide slide rail driving oil cylinder guide device of the invention when being opened.
FIG. 11 is a schematic cross-sectional view C-C of FIG. 9.
FIG. 12 is a schematic view of a hanger assembly of the present invention.
FIG. 13 is a schematic view of the latch mechanism of the present invention.
Fig. 14 is a schematic structural view of the self-locking device of the present invention.
Fig. 15 is a schematic view of the structure of the vibration preventing device of the present invention.
In the figure: a derrick lower section 1, a derrick lower section side truss 101, a lower section stopper 102, a derrick lower section bottom truss 103, a lower section bottom stopper 104, a derrick lower section top stopper 105, a derrick middle section 2, a middle section first stopper 201, a middle section top stopper 202, a middle section side truss 203, a middle section bottom stopper 204, a middle section bottom truss 205, a middle section telescopic cylinder 206, a middle section second stopper 207, a derrick upper section 3, an upper section top stopper 301, an upper section side truss 302, an upper section bottom stopper 303, an upper section bottom truss 304, an upper section telescopic cylinder 305, a derrick 4, an anti-vibration wedge 41, an anti-vibration beam 42, a release cylinder 43, an anti-vibration tension spring 44, a derrick foundation 5, a hanger assembly 6, a first guide wheel 62, a first guide wheel 63, a second guide wheel 64, a self-locking device 7, a self-locking wedge 71, a self-locking push rod 72, a self-locking tension spring 73, a self-locking swing rod 74, a cylinder guide device 8, an upper guide swing arm 81, the derrick comprises an upper guide collision block 82, an upper guide ring 83, an upper guide tension spring 84, an upper guide sliding rail 85, an upper guide swinging seat 86, a middle guide swinging arm 801, a middle guide ring 802, a middle guide swinging arm 803, a middle guide tension spring 804, a middle guide tension spring 805, a middle guide sliding rail 806, a lock pin device 9, a rotating pin seat 91, a rotating pin 92, a boss 93, a lock pin cylinder 94, a derrick inclined strut 10, a wellhead center line 11, an operation platform 12, a guy rope assembly 13 and a derrick 14 in a sleeved state.
Detailed Description
As shown in fig. 1 to 3, the independent hydraulic telescopic derrick comprises a derrick lower section 1, a derrick middle section 2 and a derrick upper section 3 which are mutually sleeved, a middle section telescopic cylinder 206 is arranged between the derrick lower section 1 and the derrick middle section 2, and an upper section telescopic cylinder 305 is arranged between the derrick middle section 2 and the derrick upper section 3. By the structure, the transportation length can be greatly reduced through the mutually sleeved lower derrick section 1, the middle derrick section 2 and the upper derrick section 3, the turning radius is reduced, and the characteristics of transportation roads of oil fields in mountain areas can be adapted. The jacking oil cylinder can greatly reduce the requirement on the hoisting height of the crane.
Preferably, as shown in fig. 3, the cross section of the lower derrick section 1 includes two lower derrick side trusses 101 and a lower derrick bottom truss 103, and the lower derrick bottom truss 103 is fixedly connected with the ends of the lower derrick side trusses 101;
the cross section of the derrick middle section 2 comprises two middle section side trusses 203 and a middle section bottom truss 205, the middle section bottom truss 205 is fixedly connected with a position close to the end of the middle section side truss 203, the cross section of the derrick middle section 2 is H-shaped, and a middle section telescopic oil cylinder 206 is positioned between the lower section bottom truss 103 and the middle section bottom truss 205;
the cross section of the derrick upper section 3 comprises two upper section side trusses 302 and an upper section bottom truss 304, the upper section bottom truss 304 is fixedly connected with the position close to the end of the upper section side truss 302, the cross section of the derrick upper section 3 is H-shaped, and an upper section telescopic oil cylinder 305 is positioned between a middle section bottom truss 205 and the upper section telescopic oil cylinder 305. With this structure, a large position space for installing the lift-up cylinder can be obtained. And the stress condition is more reliable. Further preferably, the upper-stage telescopic cylinder 305 and the middle-stage telescopic cylinder 206 in this example are configured by a multi-stage cylinder, for example, a three-stage cylinder, and thus the installation space of the cylinders is further reduced. In a further preferred scheme, the middle-section bottom limiting rod 204 and the lower-section bottom limiting rod 104 are further provided with pore plates, and when the two pore plates are sleeved, the two pore plates are overlapped, so that a locking pin can be conveniently inserted into the pore plates, and the separation in the transportation process is avoided. A hole plate for locking with each other is also arranged between the upper-section bottom limit rod 303 and the middle-section second limit rod 207. Facilitating the penetration of the locking pins to avoid disengagement during transport.
In a preferred scheme, as shown in fig. 3, a lower-section bottom limiting rod 104 and a lower-section top limiting rod 105 are respectively arranged at two ends of the inner side of a lower-section side truss 101;
the two ends of the middle-section side truss 203 are respectively provided with a middle-section bottom limiting rod 204 and a middle-section top limiting rod 202, the lower-section bottom limiting rod 104 is in sliding contact with the middle-section bottom limiting rod 204, and the lower-section top limiting rod 105 is in sliding contact with the middle-section top limiting rod 202;
the inner free end of the middle-section side truss 203 is provided with a middle-section first limiting rod 201, the middle-section bottom truss 205 is provided with a middle-section second limiting rod 207, the two ends of the upper-section side truss 302 are respectively provided with an upper-section top limiting rod 301 and an upper-section bottom limiting rod 303, the middle-section first limiting rod 201 is in sliding contact with the upper-section top limiting rod 301, and the middle-section second limiting rod 207 is in sliding contact with the upper-section bottom limiting rod 303. By the structure, the sliding fit precision among the lower derrick section 1, the middle derrick section 2 and the upper derrick section 3 can be improved, and in the application, the gaps among the lower derrick section 1, the middle derrick section 2 and the upper derrick section 3 are within 5 mm. Higher accuracy is beneficial to reducing vibration of the derrick.
In the preferred scheme as shown in fig. 4-7, an upper section telescopic oil cylinder 305 is arranged between a derrick middle section 2 and a derrick upper section 3, and an oil cylinder guide device 8 is further arranged, wherein in the oil cylinder guide device 8, two upper guide swing arms 81 are positioned at two sides of the upper section telescopic oil cylinder 305, the upper guide swing arms 81 are hinged with an upper guide swing seat 86 fixedly arranged on the derrick middle section 2, and the free ends of the upper guide swing arms 81 are provided with upper guide rings 83;
an upper guide tension spring 84 is arranged between the upper guide swing arm 81 and the derrick middle section 2;
an upper guide collision block 82 is arranged on the upper guide swing arm 81, an upper guide sliding rail 85 is fixedly arranged on the derrick upper section 3, and the upper guide sliding rail 85 is in sliding contact with the guide collision block 82, so that the upper guide swing arm 81 is in an open state in a partial stroke of jacking of the derrick upper section 3, for example, the first half stroke of jacking, and a guide ring 83 is folded to hold the upper section telescopic oil cylinder 305 in the partial stroke, for example, the second half stroke of jacking. Through the arranged oil cylinder guide device 8, the movement of the upper section telescopic oil cylinder 305 can be guided, and the lateral stress of the upper section telescopic oil cylinder 305 is reduced. The provided upper guide slide rail 85 and the swinging upper guide swing arm 81 can avoid interference.
According to the preferable scheme, as shown in fig. 8-11, two middle-section telescopic oil cylinders 206 are arranged between a derrick lower section 1 and a derrick middle section 2, and an oil cylinder guide device is further arranged, wherein a middle guide swing arm 801 positioned in the middle is hinged with a lower-section bottom truss 103 of the derrick lower section 1, middle side guide swing arms 803 positioned on two sides are hinged with a lower-section side truss 101 of the derrick lower section 1, and free ends of the middle guide swing arm 801 and the middle side guide swing arm 803 are provided with middle guide rings 802;
the middle guide swing arm 801 is connected with the derrick lower section 1 through a middle guide tension spring 805, and the middle guide swing arm 803 is connected with the derrick lower section 1 through a middle guide tension spring 804;
the derrick middle section 2 is further provided with a middle guide slide rail 806, and the middle guide slide rail 806 is in sliding contact with the middle guide swing arm 801 and the middle guide swing arm 803, so that the middle guide swing arm 801 and the middle guide swing arm 803 are in an open state in a partial stroke of jacking of the derrick middle section 2, for example, in the first half stroke of jacking, and the middle guide ring 802 is folded to embrace the middle section telescopic cylinder 206 in a partial stroke, for example, in the second half stroke of jacking. By the structure, the movement of the middle-section telescopic oil cylinder 206 can be guided, the lateral stress of the middle-section telescopic oil cylinder 206 is reduced, and the jacking reliability and safety are improved.
In a preferred scheme, as shown in fig. 13, a lock pin device 9 is arranged at a position close to the top end of the derrick lower section 1, in the lock pin device 9, a rotating pin seat 91 is fixedly connected with the derrick lower section 1, one end of a rotating pin 92 is hinged with the rotating pin seat 91, the rotating pin 92 is in an "L" shape, a protruding part 93 is arranged outside the middle bending part of the rotating pin 92, one end of a lock pin cylinder 94 is connected with the protruding part 93, the other end of the lock pin cylinder 94 is fixedly connected with the derrick lower section 1, and when the lock pin cylinder 94 retracts, the free end of the rotating pin 92 extends into the derrick lower section 1. With this structure, before the derrick upper section 3 starts to be jacked, the piston rod of the lock pin cylinder 94 extends to rotate the rotating pin 92, and the free part of the rotating pin 92 leaves the side wall of the derrick lower section 1, so that the derrick middle section 2 can be jacked freely. When the derrick middle section 2 is jacked in place, the piston rod of the lock pin cylinder 94 retracts to enable the rotating pin 92 to rotate, the rotating pin 92 is placed on the rotating pin seat 91, the free end of the rotating pin 92 extends into the derrick lower section 1 and is located below the derrick middle section 2 or in a pin hole of the derrick middle section 2, at the moment, the pressure of the pressure relief middle section telescopic cylinder 206 is released, the derrick middle section 2 falls on the rotating pin 92, and the derrick middle section 2 is supported.
In a preferred scheme, as shown in fig. 14, a self-locking device 7 is arranged at a position of the derrick upper section 3 close to the bottom end, in the self-locking device 7, one end of a self-locking wedge 71 respectively positioned at two sides is hinged with the derrick upper section 3, the self-locking wedge 71 is in an L shape, the bent outer part of the middle part of the self-locking wedge 71 is hinged with one end of a self-locking push rod 72, the other end of the self-locking push rod 72 is hinged with a self-locking swing rod 74, the middle part of the self-locking swing rod 74 is hinged with the derrick upper section 3, and the self-locking swing rod 74 is also connected with the derrick upper section 3 through a self-locking tension spring 73, so that the self;
the free end of the self-locking wedge 71 is provided with a wedge surface to allow the derrick upper section 3 to slide open during jacking and form a support during lowering. With the structure, when the derrick upper section 3 is jacked, the self-locking wedge 71 cannot interfere due to the existence of the wedge surface, and after the derrick upper section 3 is jacked in place, the upper section telescopic oil cylinder 305 is decompressed, and the derrick upper section 3 falls on the self-locking wedge 71 to form reliable support. In a preferable scheme, a rotating pin is further arranged and hinged with the derrick upper section 3, a hook head is arranged at the top end of the rotating pin, a pin is arranged on the self-locking wedge block 71, and the rotating pin is used for hooking the pin of the self-locking wedge block 71 when the self-locking wedge block 71 contracts, so that the position of the self-locking wedge block 71 is locked, and the derrick upper section 3 can be conveniently lowered.
In a preferred scheme, as shown in fig. 15, the anti-vibration device 4 is further arranged at the end positions of the lower derrick section 1 and the middle derrick section 2, the anti-vibration device 4 is located at a position close to the bottom truss, in the anti-vibration device 4, an anti-vibration cross beam 42 is slidably connected with the bottom truss, an anti-vibration wedge 41 for inserting between limiting rods is fixedly arranged on one side of the anti-vibration cross beam 42, the anti-vibration cross beam 42 is connected with the bottom truss through an anti-vibration tension spring 44, and a disengagement cylinder 43 is arranged between the anti-vibration cross beam 42 and the bottom truss. By the structure, shaking among the lower derrick section 1, the middle derrick section 2 and the upper derrick section 3 can be avoided, the stability of the whole derrick is improved, and especially the influence of alternating stress generated by vibration on the whole derrick is reduced. In a default state, the anti-vibration wedge 41 is inserted between the lower derrick section 1 and the middle derrick section 2, or between the middle derrick section 2 and the upper derrick section 3, and when the derrick needs to be jacked up or retracted, the piston rod of the release cylinder 43 extends out, so that the anti-vibration wedge 41 is released.
In a preferred scheme, as shown in figures 1 and 2, the bottom of a derrick lower section 1 is hinged with a derrick foundation 5, and one side of the derrick lower section 1 is connected with a derrick inclined strut 10, so that the whole derrick is inclined by 3-8 degrees. In a preferred solution, the derrick is tilted 5 °. By the structure, the working space of the derrick is enlarged.
In a preferred scheme, as shown in fig. 2, the whole derrick is connected with a guy rope assembly 13 to ensure the stability of the derrick;
in the preferred scheme as shown in fig. 2 and 12, a hanging bracket assembly 6 is arranged at the top of the derrick upper section 3; in the hanger assembly 6, a first guide wheel 62, a pulley block 63 and a second guide wheel 64 are arranged in a hanger 61 and used for installing a steel wire rope.
In a preferred solution, as shown in fig. 2, the sections 2 are provided with an operating platform 12 in the derrick.
The independent hydraulic telescopic derrick is integrally lifted by a crane and is in pin joint with a derrick foundation 5 pre-embedded in an anchor pit near a wellhead, then the derrick is lifted by the crane to be lifted to an approaching working position, four guy ropes at the top of a derrick lower section 1 are connected, and a locking pin among the derrick lower section 1, a derrick middle section 2 and a derrick upper section 3 is removed. And starting the hydraulic station to work normally, extending the middle section telescopic oil cylinder 206 out of the derrick middle section 2, guiding the middle section telescopic oil cylinder 206 by the oil cylinder guiding device 8, and inserting the locking pin device 9 between the derrick lower section 1 and the derrick middle section 2 to a working position from outside to inside. An upper section telescopic oil cylinder 305 is adopted to extend out of the derrick upper section 3. The self-locking device 7 between the derrick middle section 2 and the derrick upper section 3 extends out to provide support, namely the extending process of the independent hydraulic telescopic derrick is completed. When the derrick is recovered, the hydraulic station is started to work normally, the upper derrick section 3 is recovered by using the upper section telescopic oil cylinder 305, the middle derrick section 2 is recovered by using the middle section telescopic oil cylinder 206, and the upper derrick section 3 and the middle derrick section 2 are connected by the locking pins between the derrick middle section 2 and the lower derrick section 1. And (3) hoisting the whole derrick by using a crane, loosening four guy wires at the top of the lower derrick section 1, and lowering the whole derrick to a position close to the horizontal position, so that the derrick sections can be transported in a sleeved mode. During transportation, a plurality of triangular transportation supports are arranged at the bottom of the derrick and then are fixedly arranged on the platform trailer.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. A stand-alone hydraulic telescopic derrick is characterized in that: the derrick comprises a derrick lower section (1), a derrick middle section (2) and a derrick upper section (3) which are mutually sleeved, wherein a middle section telescopic oil cylinder (206) is arranged between the derrick lower section (1) and the derrick middle section (2), and an upper section telescopic oil cylinder (305) is arranged between the derrick middle section (2) and the derrick upper section (3);
the cross section of the derrick lower section (1) comprises two lower section side trusses (101) and a lower section bottom truss (103), and the lower section bottom truss (103) is fixedly connected with the end of the lower section side truss (101);
the cross section of the derrick middle section (2) comprises two middle section side trusses (203) and a middle section bottom truss (205), the middle section bottom truss (205) is fixedly connected with a position close to the end of the middle section side truss (203), the cross section of the derrick middle section (2) is H-shaped, and a middle section telescopic oil cylinder (206) is positioned between a lower section bottom truss (103) and the middle section bottom truss (205);
the cross section of the derrick upper section (3) comprises two upper section side trusses (302) and an upper section bottom truss (304), the upper section bottom truss (304) is fixedly connected with a position close to the end of the upper section side truss (302), the cross section of the derrick upper section (3) is H-shaped, and an upper section telescopic oil cylinder (305) is positioned between a middle section bottom truss (205) and the upper section bottom truss (304);
the cross sections of the derrick upper section (3) and the derrick middle section (2) are H-shaped, so that a larger position space for installing the telescopic oil cylinder is obtained, and the reliable stress condition is improved;
a self-locking device (7) is arranged at a position, close to the bottom end, of the derrick upper section (3), in the self-locking device (7), one end of a self-locking wedge block (71) respectively positioned at two sides is hinged with the derrick upper section (3), the self-locking wedge block (71) is L-shaped, the bent outer part of the middle part of the self-locking wedge block (71) is hinged with one end of a self-locking push rod (72), the other end of the self-locking push rod (72) is hinged with a self-locking swing rod (74), the middle part of the self-locking swing rod (74) is hinged with the derrick upper section (3), and the self-locking swing rod (74) is also connected with the derrick upper section (3) through a self-locking tension spring (73) so that the self-locking wedge block (71) tends to be;
the free end of the self-locking wedge block (71) is provided with a wedge surface, so that the upper section (3) of the derrick can slide away in the jacking process and form support in the falling process;
the derrick structure is characterized by further comprising a rotating pin, the rotating pin is hinged with the derrick upper section (3), a hook head is arranged at the top end of the rotating pin, a pin is arranged on the self-locking wedge block (71), and the rotating pin is used for hooking the pin of the self-locking wedge block (71) when the self-locking wedge block (71) contracts, so that the position of the self-locking wedge block (71) is locked, and the derrick upper section (3) can conveniently descend;
the end position of festival (2) still is equipped with anti-vibration device (4) under the derrick in (1) and the derrick, anti-vibration device (4) be located the position near the end truss, anti-vibration device (4) in, anti-vibration crossbeam (42) and end truss sliding connection, one side of anti-vibration crossbeam (42) sets firmly and is used for inserting anti-vibration voussoir (41) between the gag lever post, anti-vibration crossbeam (42) are connected with end truss through anti-vibration extension spring (44), are equipped with between anti-vibration crossbeam (42) and end truss and break away from jar (43).
2. A freestanding hydraulic telescopic mast as claimed in claim 1, wherein: a lower-section bottom limiting rod (104) and a lower-section top limiting rod (105) are respectively arranged at two ends of the inner side of the lower-section side truss (101);
two ends of the middle section side truss (203) are respectively provided with a middle section bottom limiting rod (204) and a middle section top limiting rod (202), the lower section bottom limiting rod (104) is in sliding contact with the middle section bottom limiting rod (204), and the lower section top limiting rod (105) is in sliding contact with the middle section top limiting rod (202);
the inner free end of the middle-section side truss (203) is provided with a middle-section first limiting rod (201), the middle-section bottom truss (205) is provided with a middle-section second limiting rod (207), the two ends of the upper-section side truss (302) are respectively provided with an upper-section top limiting rod (301) and an upper-section bottom limiting rod (303), the middle-section first limiting rod (201) is in sliding contact with the upper-section top limiting rod (301), and the middle-section second limiting rod (207) is in sliding contact with the upper-section bottom limiting rod (303).
3. A freestanding hydraulic telescopic mast as claimed in claim 1, wherein: an upper section telescopic oil cylinder (305) is arranged between the derrick middle section (2) and the derrick upper section (3), an oil cylinder guide device (8) is further arranged, in the oil cylinder guide device (8), two upper guide swing arms (81) are positioned on two sides of the upper section telescopic oil cylinder (305), the upper guide swing arms (81) are hinged with an upper guide swing seat (86) fixedly arranged on the derrick middle section (2), and an upper guide ring (83) is arranged at the free end of each upper guide swing arm (81);
an upper guide tension spring (84) is arranged between the upper guide swing arm (81) and the derrick middle section (2);
an upper guide collision block (82) is arranged on the upper guide swing arm (81), an upper guide sliding rail (85) is fixedly arranged on the upper section (3) of the derrick, the upper guide sliding rail (85) is in sliding contact with the upper guide collision block (82), so that the upper guide swing arm (81) is in an open state in a partial stroke of jacking of the upper section (3) of the derrick, and an upper guide ring (83) is folded to hold the upper section telescopic oil cylinder (305) in the partial stroke.
4. A freestanding hydraulic telescopic mast as claimed in claim 1, wherein: two middle-section telescopic oil cylinders (206) are arranged between a derrick lower section (1) and a derrick middle section (2), and an oil cylinder guide device is also arranged, wherein a middle guide swing arm (801) positioned in the middle is hinged with a lower-section bottom truss (103) of the derrick lower section (1), middle side guide swing arms (803) positioned on two sides are hinged with a lower-section side truss (101) of the derrick lower section (1), and middle guide rings (802) are arranged at the free ends of the middle guide swing arms (801) and the middle side guide swing arms (803);
the middle guide swing arm (801) is connected with the lower derrick section (1) through a middle guide tension spring (805), and the middle guide swing arm (803) is connected with the lower derrick section (1) through a middle guide tension spring (804);
the derrick middle section (2) is also provided with a middle guide sliding rail (806), the middle guide sliding rail (806) is in sliding contact with the middle guide swinging arm (801) and the middle side guide swinging arm (803), so that the middle guide swinging arm (801) and the middle side guide swinging arm (803) are in an open state in a partial stroke of jacking of the derrick middle section (2), and the middle guide ring (802) is folded to embrace the middle section telescopic oil cylinder (206) in the partial stroke.
5. A freestanding hydraulic telescopic mast as claimed in claim 1, wherein: the derrick structure is characterized in that a lock pin device (9) is arranged at a position, close to the top end, of a derrick lower section (1), in the lock pin device (9), a rotating pin seat (91) is fixedly connected with the derrick lower section (1), one end of a rotating pin (92) is hinged with the rotating pin seat (91), the rotating pin (92) is L-shaped, a protruding portion (93) is arranged outside the middle bending portion of the rotating pin (92), one end of a lock pin cylinder (94) is connected with the protruding portion (93), the other end of the lock pin cylinder is fixedly connected with the derrick lower section (1), and when the lock pin cylinder (94) retracts, the free end of the rotating pin (92) extends into the derrick lower section (1).
6. A freestanding hydraulic telescopic mast as claimed in claim 1, wherein: the bottom of the lower derrick section (1) is hinged to a derrick foundation (5), and one side of the lower derrick section (1) is connected with a derrick inclined strut (10) so that the whole derrick can be inclined by 3-8 degrees.
7. A freestanding hydraulic telescopic mast as claimed in claim 1 or 6, wherein: the whole derrick is connected with a guy rope assembly (13);
a hanging bracket assembly (6) is arranged at the top of the derrick upper section (3);
an operation platform (12) is arranged on the derrick middle section (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811217323.0A CN109057720A (en) | 2018-10-18 | 2018-10-18 | Hydraulic telescopic derrick |
| CN2018112173230 | 2018-10-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109611031A CN109611031A (en) | 2019-04-12 |
| CN109611031B true CN109611031B (en) | 2021-02-19 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811217323.0A Pending CN109057720A (en) | 2018-10-18 | 2018-10-18 | Hydraulic telescopic derrick |
| CN201811444299.4A Active CN109611031B (en) | 2018-10-18 | 2018-11-29 | Independent hydraulic telescopic derrick |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811217323.0A Pending CN109057720A (en) | 2018-10-18 | 2018-10-18 | Hydraulic telescopic derrick |
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| Country | Link |
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| CN (2) | CN109057720A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980591B (en) * | 2020-09-01 | 2024-06-18 | 中国石油天然气集团有限公司 | Hydraulic lifting three-section derrick for oil field trial repair operation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2462067Y (en) * | 2000-11-01 | 2001-11-28 | 江汉石油管理局第四机械厂 | Uper/lower frame locking device of derrick |
| CN202578531U (en) * | 2012-04-28 | 2012-12-05 | 辽宁石油机械制造有限公司 | Centralizer for telescopic oil cylinder of derrick |
| CN203035100U (en) * | 2013-01-20 | 2013-07-03 | 湖北四钻石油设备股份有限公司 | Well repair machine derrick cylinder locking device |
| CN203296707U (en) * | 2013-06-06 | 2013-11-20 | 四川宏华石油设备有限公司 | Telescopic mounting type derrick |
| CN103510864B (en) * | 2013-10-28 | 2018-02-02 | 四川宏华石油设备有限公司 | One kind three saves hydraulically extensible suit derrick |
| CN209053569U (en) * | 2018-10-18 | 2019-07-02 | 中石化四机石油机械有限公司 | Hydraulic telescopic derrick |
-
2018
- 2018-10-18 CN CN201811217323.0A patent/CN109057720A/en active Pending
- 2018-11-29 CN CN201811444299.4A patent/CN109611031B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109057720A (en) | 2018-12-21 |
| CN109611031A (en) | 2019-04-12 |
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