CN103939033A - Marine rig hydraulic wave compensation device - Google Patents
Marine rig hydraulic wave compensation device Download PDFInfo
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- CN103939033A CN103939033A CN201410173368.8A CN201410173368A CN103939033A CN 103939033 A CN103939033 A CN 103939033A CN 201410173368 A CN201410173368 A CN 201410173368A CN 103939033 A CN103939033 A CN 103939033A
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Abstract
A marine rig hydraulic wave compensation device comprises a drill tower fixedly arranged on a drilling vessel, a tower top pulley, a steel wire rope and a hydraulic wave compensation mechanism, wherein the tower top pulley, the steel wire rope and the hydraulic wave compensation mechanism are arranged at the top end of the drill tower. The hydraulic wave compensation mechanism comprises an oil cylinder fixed wheel, an oil cylinder, an oil cylinder movable wheel, a sealed oil storage device and an oil pipe. The oil cylinder fixed wheel is fixedly arranged on the drilling vessel, the oil cylinder comprises a cylinder body and a piston rod, the lower end of the sealed oil storage device is provided with hydraulic oil, the upper end of the sealed oil storage device is provided with compressed gas, the hydraulic oil in the sealed oil storage device is communicated with hydraulic oil in an inner cavity of the cylinder body through the oil pipe, one end of the steel wire rope is connected with a drill bit part, and the other end of the steel wire rope sequentially winds around the tower top pulley, the oil cylinder fixed wheel and the oil cylinder movable wheel and is fixed to the drilling vessel. Quick and accurate compensation to balance of the drill bit part can be achieved, the marine rig hydraulic wave compensation device is simple in structure and stable and reliable in compensation and is not influenced by shaking of the drilling vessel, and safety hidden hazards do not exist.
Description
Technical field
The present invention relates to geological processing machinery field, particularly a kind of marine rig hydraulic pressure wave compensating device.
Background technology
Drilling at the sea operating environment is more than land drilling environment complexity, and it is exactly to affect one of key factor of drilling at the sea quality that the heave of waves causes the floating of drilling ship and sinking.For eliminating the impact of the heave of waves on drilling at the sea, on drilling ship, be equipped with wave compensating device, Fig. 1 is a kind of structural representation of existing marine rig wave compensating device, it comprises boring tower 1, wire rope 2, tower top pulley 3, balancing weight 4 and sleeve pipe 5, boring tower 1 and sleeve pipe 5 are fixedly mounted on drilling ship 6, tower top pulley 3 is arranged on the top of boring tower 1, wire rope 2 one end are connected with drill bit assembly 7, the other end is connected with balancing weight 4 after walking around tower top pulley 3, balancing weight 4 is placed in sleeve pipe 5, can move up and down along sleeve pipe 5 tube walls.Its operating principle is: in the time that drilling ship 6 sinks because of wave impact, boring tower 1 and tower top pulley 3 also move downward thereupon, and now wire rope 2 is relaxed, and balancing weight 4 is leading wire rope 2 and moving downward along sleeve pipe 5 tube walls under Action of Gravity Field, until wire rope 2 is exceptionally straight; In the time that drilling ship 7 floats because of wave impact, boring tower 1 and tower top pulley 3 also move upward thereupon, and because the weight of drill bit assembly 6 is greater than the weight of balancing weight 4, now balancing weight 4 moves upward along sleeve pipe 5 tube walls under the traction of wire rope 2.So just ensured drill bit assembly 6 under the environment of the heave of waves all the time in sustained height.
But the marine rig wave compensating device of this structure has the following disadvantages:
1, in the process of drilling ship floating and sinking, be subject to hull wobble effects, there is unavoidably friction and collision in balancing weight and sleeve pipe, this has just caused the balanced compensated delay of response of balancing weight to drill bit assembly: in the smooth undamaged situation of balancing weight internal surface of sleeve pipe, balancing weight rope closing or put reaction time of rope can be lower than 0.1 second, substantially can reach counterbalance effect, but because the friction that balancing weight and balancing weight sleeve pipe exist and collision are while allowing balancing weight internal surface of sleeve pipe become rough, balancing weight rope closing or the reaction time that puts rope generally exceed 0.3 second, balanced compensated reaction is even inaccurate, when serious, balancing weight may be stuck in sleeve pipe, cause security incident, be difficult to meet drilling at the sea requirement.
2, balancing weight must be put into the sleeve pipe being fixed on drilling ship, in case balancing weight teeter or come off and hurt sb.'s feelings, in wave compensating device, balancing weight gross weight is about 85% left and right of drill bit assembly weight, and if drill bit assembly weight is 2000kg, balancing weight gross weight should be controlled at 1700kg left and right; The weight of monolithic balancing weight is about 60-80kg, the high 3-5m of balancing weight sleeve pipe, balancing weight can only be put into below balancing weight sleeve pipe, while often putting into one, the balancing weight of previously having put into must be levered up, leave enough spaces of filling in to the balancing weight that need to put into now, installation and taking-up bring certain inconvenience.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and a kind of marine rig hydraulic pressure wave compensating device is provided, its balanced compensated reaction fast accurate to drill bit assembly, is not subject to environmental disturbances, without potential safety hazard.
Technical scheme of the present invention is: a kind of marine rig hydraulic pressure wave compensating device, comprise the boring tower being fixedly mounted on drilling ship, be arranged on the tower top pulley on boring tower top, wire rope and hydraulic pressure compensation of undulation mechanism, hydraulic pressure compensation of undulation mechanism comprises oil cylinder fast pulley, oil cylinder, oil cylinder castor, tight storage device and oil pipe, oil cylinder fast pulley is fixedly mounted on drilling ship, oil cylinder comprises cylinder body and piston rod, cylinder body is fixed on oil cylinder fast pulley, the end of piston rod is connected with the wheel shaft of oil cylinder castor, there is hydraulic oil tight storage device lower end, there is Compressed Gas upper end, the hydraulic oil of tight storage device lower end is communicated with the hydraulic oil in cylinder body by oil pipe, wire rope one end is connected on drill bit assembly, the other end is walked around tower top pulley successively, after oil cylinder fast pulley and oil cylinder castor, be fixed on drilling ship.
The present invention compared with prior art, has following features:
1, the present invention only need to control hydraulic oil is about drill bit assembly weight 85% left and right by the tension force of oil cylinder formation, if drill bit assembly weight is 2000kg, only need to control hydraulic oil forms about 1700kg(by oil cylinder and is roughly equal to 16660N) tension force, be that radius is 0.075m if oil cylinder internal diameter is 150mm(), the pressure control of hydraulic oil is 16660N/ (3.14 × 0.075m × 0.075m) ≈ 0.94MPa, can quick and precisely compensate quickly the balance of drill bit assembly, in marine rig hydraulic pressure wave compensating device, the pressed gas of accumulator upper end can fill and can put, the pressure adjusting that is hydraulic oil is quite convenient, simple in structure, compensate reliable and stable, the impact that not rocked by drilling ship, without potential safety hazard.
2, without putting into and take out balancing weight, simple installation.
3, the impact bringing to drilling ship for balance wave, the rope closing and put rope of moving up and down of the oil cylinder castor of the oil cylinder upper end of marine rig hydraulic pressure wave compensating device utilization, oil cylinder is that one can persistence be used component, reaction flexibly, its rope closing or reaction time of putting rope, lower than 0.1 second, can meet the requirement of drilling at the sea well.
Below in conjunction with figure and embodiment, detailed structure of the present invention is further described.
Brief description of the drawings
Fig. 1 is the structural representation of existing marine rig wave compensating device;
Fig. 2 is structural representation of the present invention.
Detailed description of the invention
As shown in Figure 2: a kind of marine rig hydraulic pressure wave compensating device, comprise the boring tower 9 being fixedly mounted on drilling ship 8, be arranged on the tower top pulley 10 on boring tower 9 tops, wire rope 11 and hydraulic pressure compensation of undulation mechanism, described hydraulic pressure compensation of undulation mechanism comprises oil cylinder fast pulley 12, oil cylinder 13, oil cylinder castor 14, tight storage device 15 and oil pipe 16, oil cylinder fast pulley 12 is fixedly mounted on drilling ship 8 by support 17, oil cylinder 13 comprises cylinder body 13-1 and piston rod 13-2, cylinder body 13-1 is weldingly fixed on oil cylinder fast pulley 12, the end of piston rod 13-2 is connected with the wheel shaft of oil cylinder castor 14, there is hydraulic oil tight storage device 15 lower ends, there is Compressed Gas upper end, the hydraulic oil of tight storage device 15 lower ends is communicated with the hydraulic oil in cylinder body 13-1 by oil pipe 16, described wire rope 11 one end are connected on drill bit assembly 18, the other end is walked around tower top pulley 10 successively, oil cylinder fix 12 take turns with oil cylinder castor 14 after be fixed on drilling ship 8.
Operating principle of the present invention is: in the time that drilling ship 8 is affected by wave and sinks, boring tower 9 and tower top pulley 10 also move downward thereupon, wire rope 11 is relaxed, because the hydraulic oil in tight storage device 15 is communicated with the hydraulic oil in cylinder body 13-1 inner chamber by oil pipe 16, Compressed Gas in tight storage device 15 is pressed into hydraulic oil in cylinder body 13-1, piston rod 13-2 drives oil cylinder castor 14 to move upward, until tense wire rope 11; In the time that drilling ship 8 is affected by wave and floats, boring tower 9 and tower top pulley 10 also move upward thereupon, wire rope 11 is tightened up, because the weight of drill bit assembly 18 is greater than Compressed Gas in tight storage device 15 and acts on the pressure of hydraulic oil liquid level, piston rod 13-2 overcomes the pressure of the Compressed Gas in tight storage device 15 and moves downward, and hydraulic oil is pressed in tight storage device 15.Like this, just ensured drill bit assembly 18 under the environment of the heave of waves all the time in sustained height.
Claims (1)
1. a marine rig hydraulic pressure wave compensating device, comprise the boring tower being fixedly mounted on drilling ship, be arranged on the tower top pulley on boring tower top, wire rope and hydraulic pressure compensation of undulation mechanism, it is characterized in that: hydraulic pressure compensation of undulation mechanism comprises oil cylinder fast pulley, oil cylinder, oil cylinder castor, tight storage device and oil pipe, oil cylinder fast pulley is fixedly mounted on drilling ship, oil cylinder comprises cylinder body and piston rod, cylinder body is fixed on oil cylinder fast pulley, the end of piston rod is connected with the wheel shaft of oil cylinder castor, there is hydraulic oil tight storage device lower end, there is Compressed Gas upper end, the hydraulic oil of tight storage device lower end is communicated with the hydraulic oil in cylinder body by oil pipe, wire rope one end is connected on drill bit assembly, the other end is walked around tower top pulley successively, after oil cylinder fast pulley and oil cylinder castor, be fixed on drilling ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173368.8A CN103939033A (en) | 2014-04-28 | 2014-04-28 | Marine rig hydraulic wave compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410173368.8A CN103939033A (en) | 2014-04-28 | 2014-04-28 | Marine rig hydraulic wave compensation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103939033A true CN103939033A (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410173368.8A Pending CN103939033A (en) | 2014-04-28 | 2014-04-28 | Marine rig hydraulic wave compensation device |
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| CN (1) | CN103939033A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217453A (en) * | 2015-10-21 | 2016-01-06 | 中国海洋石油总公司 | Impact load energy disperser |
| CN105507827A (en) * | 2015-12-23 | 2016-04-20 | 宝鸡石油机械有限责任公司 | Lifting oil cylinder type well drilling device |
-
2014
- 2014-04-28 CN CN201410173368.8A patent/CN103939033A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105217453A (en) * | 2015-10-21 | 2016-01-06 | 中国海洋石油总公司 | Impact load energy disperser |
| CN105507827A (en) * | 2015-12-23 | 2016-04-20 | 宝鸡石油机械有限责任公司 | Lifting oil cylinder type well drilling device |
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| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140723 |
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| RJ01 | Rejection of invention patent application after publication |