CN2900351Y - Float position tieing at shallow sea water - Google Patents
Float position tieing at shallow sea water Download PDFInfo
- Publication number
- CN2900351Y CN2900351Y CN 200620113681 CN200620113681U CN2900351Y CN 2900351 Y CN2900351 Y CN 2900351Y CN 200620113681 CN200620113681 CN 200620113681 CN 200620113681 U CN200620113681 U CN 200620113681U CN 2900351 Y CN2900351 Y CN 2900351Y
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- mooring
- buoyancy aid
- marine site
- shallow water
- aid body
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Abstract
The utility model relates to a shallow sea float for mooring location, which comprises a float body with a water inlet and an outlet device and a mooring locating device connected with the float body. The product is characterized in that: the mooring location device is composed of a group of anchoring devices arranged on seabed and a strain leg-type mooring hawser with the pretension between the anchoring device and the float body. The pretension makes the float body maintain the 5 percent to 10 percent storage buoyancy of the load displacement. The float body is provided with three to four mooring points. The utility model designs the mooring hawser between the float body and the anchoring device into a strain leg with the pretension. When the external environmental force is removed, the strain leg will make the float body return to the original position. Occupying little sea area and needing small investment, the utility model is suitable to be used in marginal oilfields in shallow sea areas.
Description
Technical field
The present invention relates to a kind of marine float, particularly about a kind of positioning moored buoyancy aid in the shallow water marine site.
Background technology
At present, China's Offshore Petroleum Industry is except that the big-and-middle-sized marine oil of continued development gas field, also in the exploitation of actively carrying out the coastal waters marginal oil field.Yet, coastal waters marginal oil field for these little oil reservoir resources, if continue development scheme according to big-and-middle-sized oil-gas field, continue to adopt the development equipment of big-and-middle-sized oil-gas field, can drop into sizable cost undoubtedly, even some oil field at all can't cost-recovering, therefore must use corresponding midget plant.Current, small-sized floating production storage unit (FPSO) and floating storage vessel (FSO) that China's Offshore Petroleum Industry is just being used at active development are exactly a kind of midget plant that the shallow water area marginal oil field uses that is fit to very much.The profile of FPSO has octagon and round two kinds, for satisfying conventional offshore oil production, need carry out the offshore location mooring to this FPSO device, when it is positioning moored, it is bigger to avoid conventional anchor chain mooring existence to take oceanic area, influence the shortcoming of ship's navigation, can reduce the mooring construction investment again, also will be fit to the use of coastal waters marginal oil field shallow water area simultaneously.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of positioning moored buoyancy aid that oceanic area is little, construction investment is economized, suitable coastal waters marginal oil field uses that takies in the shallow water marine site.
For achieving the above object, the present invention takes following technical scheme: a kind of mooring is positioned at the buoyancy aid in shallow water marine site, it comprises buoyancy aid body and the connected mooring positioning device with feeding/discharging device, it is characterized in that: described mooring positioning device comprise one group be installed in the anchor fitting in seabed and be connected to each described anchor fitting and each buoyancy aid body moored position between the tension leg type mooring fast with pretension, described pretension makes described buoyancy aid keep the reserve buoyance of its full load displacement 5%～10%, and the moored position on the described buoyancy aid body is 3～4 places around described buoyancy aid body setting.
Angle between described mooring fast and the seabed horizon changes with being increased between 30 °～90 ° of the depth of water.
Each moored position on the described buoyancy aid body is provided with 2～4 mooring points.
Described buoyancy aid body is a kind of in floating production storage unit or the floating storage vessel.
Described buoyancy aid body is a floating drum, is provided with a mooring ear at the top of described floating drum, connects another mooring fast on described mooring ear, and the other end of this mooring fast connects a kind of in ship shape floating production storage unit or the ship shape floating storage vessel.
Connect described mooring fast between described floating drum and the anchor fitting and the angle between the horizon of seabed, change with being increased between 30 °～60 ° of the depth of water.
Described anchor fitting is a kind of in piled anchor or the suction anchor.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention is owing to be provided with one group of anchor fitting, one group of mooring fast, and have feeding/discharging device and many places mooring point on the buoyancy aid body, therefore can be when the moored float body, water delivery in buoyancy aid body water inlet cabin earlier, after treating the mooring fast mooring finished, the water that to intake again in the cabin is discharged, make the buoyancy aid body and the mooring fast between the anchor fitting that rise by self buoyancy form the tension leg that has pretension one by one, it not only can make the buoyancy aid body positioning moored in the predetermined maritime area, and can make the certain buoyancy of buoyancy aid body deposit, in case the buoyancy aid body is subjected to external force of environment, tension leg has certain stretch-draw ability, and after external force of environment was removed, tension leg can make the buoyancy aid body get back to original position again.2, the positioning moored device of tension leg type provided by the invention is a tensile property with the catenary characteristic changing of conventional mooring fast, and the mooring performance of FPSO is greatly improved.3, the present invention can be provided with the different mooring fast of quantity according to the maritime environment situation, simultaneously can be according to different sea water advanced, determine the horizontal angle in mooring fast and seabed, cooperate different buoyancy reserves, therefore can be with the shortest mooring fast, realize the most appropriate mooring energy, realize that the present invention takies the purpose that oceanic area is little, construction investment is economized.4, the present invention not only can mooring one octagon or circular FPSO or FSO, and can mooring one floating drum, this floating drum and tension leg type mooring fast constitute the main body of SPBM, connect a ship shape FPSO or a FSO at the floating drum top by mooring fast again, under the environmental forces effect, ship shape FPSO or FSO can do 360 ° rotation around floating drum, and the present invention can be widely used in the exploitation of the more shallow marginal oil field in China offshore waters.
Description of drawings
Fig. 1 adopts the positioning moored octagon FPSO scheme drawing of the present invention
Fig. 2 is the birds-eye view of Fig. 1
Fig. 3 is the another kind of positioning moored state of Fig. 1
Fig. 4 adopts the positioning moored circular FPSO scheme drawing of the present invention
Fig. 5 is the birds-eye view of Fig. 4
Fig. 6 is the another kind of positioning moored state of Fig. 4
Fig. 7 adopts positioning moored single-point floating drum of the present invention and and ship shape FPSO bonded assembly scheme drawing
Fig. 8 is the birds-eye view of Fig. 7
Fig. 9 is that Fig. 7 is in the positioning moored view of deep water
Figure 10 is the birds-eye view of Fig. 9
The specific embodiment
Describe the present invention below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, the present invention includes one have feeding/discharging device buoyancy aid body 1 and with buoyancy aid body 1 bonded assembly mooring positioning device, mooring positioning device comprise one group be installed in the anchor fitting 2 in seabed and be connected to each anchor fitting 2 and each buoyancy aid body 1 position between the tension leg type mooring fast 3 with pretension, 3～4 places of moored position on the buoyancy aid body 1 for being provided with around buoyancy aid body 1, each moored position is provided with 2～4 mooring points 4.
When the present invention installs, at first one group of anchor fitting 2 is fixedly mounted on the position of seabed predetermined set buoyancy aid body 1 respectively, on each described anchor fitting 2, connects mooring fast 3; With towboat buoyancy aid body 1 is dragged to above-mentioned marine site then, imports seawater in the predetermined water inlet cabin in buoyancy aid body 1,, then each bar mooring fast 3 is connected on each mooring point 4 of buoyancy aid body 1 with seawater ballast buoyancy aid body 1; At last the seawater in the buoyancy aid body 1 water inlet cabin is discharged, buoyancy aid body 1 relies on self buoyancy come-up, makes each bar mooring fast 3 produce tension force, has both made at buoyancy aid body 1 at full load, also keeps 5%～10% reserve buoyance.
By above-mentioned installation steps as can be known the pretension of mooring fast of the present invention how to produce, the length of each mooring fast 3 is after connecting buoyancy aid body 1, all be shorter than the length of buoyancy aid body 1 at full load anchor fitting 2 to buoyancy aid body 1 mooring point, buoyancy meeting has upwards produced certain pretension, form tension leg one by one, it not only can make buoyancy aid body 1 positioning moored in the predetermined maritime area, in case and buoyancy aid body 1 is subjected to external force of environment, tension leg has certain stretch-draw ability, after external force of environment was removed, tension leg can make buoyancy aid body 1 get back to original position again.
Among the present invention, mooring fast 3 and the horizontal angle theta in seabed, when the depth of water during greater than 4 times of buoyancy aid body 1 maximum drafts, angle theta equals 90 °, and promptly mooring fast 3 is vertical with anchor fitting 2 and is connected, when the depth of water during less than 4 times of buoyancy aid body 1 maximum drafts, angle theta is between 30 °～90 °, angle is big more, and the length of mooring fast 3 is just short more, and its elasticity is just low more; Angle is more little, and the length of mooring fast 3 is just long more, and its elasticity is just good more.In the actual use of the inventive method, the marine site depth of water should be less than 200 meters.
Reserve buoyance of the present invention, account for 5% to 10% of buoyancy aid body 1 full load displacement, the reserve buoyance effect is to allow each mooring fast 3 produce certain tension force, when the depth of water during greater than 4 times of buoyancy aid body 1 maximum drafts, mooring fast 3 is arranged vertically, for avoiding the excessive uplift force of anchor fitting 2, should use less reserve buoyance; When the depth of water is more shallow, angled because of mooring fast 3 and seabed, make anchor fitting 2 on to pull out component less, therefore can use bigger reserve buoyance.Anchor fitting 2 should have enough big uplift force, generally greater than 3 times of safety factor, makes the present invention have the stronger ability of resisting marine environment power.
Among the present invention, mooring fast 3 quantity are selected with concrete marine environment condition according to buoyancy aid body 1 full load displacement, the moored position of buoyancy aid body 1 can be provided with in 3 positions or 4 positions on buoyancy aid body 1, each position is provided with 2 or 3 or 4 mooring points 4, such as the distribution that is 4 * 2 or 4 * 3 or 4 * 4, be connected with mooring fast 3 between each mooring point 4 and the cooresponding anchor fitting 2.That mooring fast 3 is selected for use is fine quality, elasticity nylon cable or wirerope preferably, should have good resistance to corrosion.The pretension that mooring fast 3 produces has strengthened the ability of opposing marine environment power, can make the rupture strength of mooring fast 3 reach 3 times of its peak load.
Be some specific embodiments below.
Embodiment one
Shown in Fig. 1～3, that present embodiment is positioning moored is a small-sized octagon FPSO, its displacement is 10,000 tons to 30,000 tons, fixedly mounted one group of eight anchor fitting 2 in the desired location in seabed, on each anchor fitting 2, connect a mooring fast 3, four arms of angle at octagon buoyancy aid body 1 are provided with moored position, and each arm of angle is arranged 2 mooring points 4, and each mooring point 4 connects a mooring fast 3.Every mooring fast 3 becomes the θ angle with the seabed horizon, such as 45 ° (as shown in Figure 1) or 90 ° (as shown in Figure 3).
Embodiment two
Shown in Fig. 4～6, that present embodiment is positioning moored is a circular FPSO, at first divide three places that six anchor fittings 2 are set in the seabed, circle along buoyancy aid body 1 disperses to be provided with 3 moored position at interval by 120 °, each position is provided with 2 mooring points 4, be connected with mooring fast 3 between each mooring point 4 and the cooresponding anchor fitting 2, every mooring fast 3 becomes the θ angle such as 50 ° (as shown in Figure 4) or 90 ° (as shown in Figure 6) with the seabed horizon.
Embodiment three
Shown in Fig. 7～10, the positioning moored buoyancy aid body 1 of present embodiment is a floating drum 5, and floating drum 5 is cylindric, and its shell is steel material and has the water-tight structure that it is provided with water filling and freeing arrangement.Along floating drum 5 circumferentially 3 moored position are set by 120 ° of intervals, each position is provided with 3 mooring points 4, and connects mooring point 4 and seabed anchor fittings 2 with mooring fast 3, comes to 9 mooring fasts 3.Floating drum 5 tops are provided with a mooring ear 6, and this mooring ear 6 connects another buoyancy aid 8 by another mooring fast 7, and buoyancy aid 8 can be a ship shape FPSO or ship shape FSO.The buoyancy aid 8 of single point mooring (SPM) can be done 360 ° rotating freely around floating drum 5.When experience marine environment power influences, floating drum 5 and mooring ship shape FPSO or the FSO on floating drum 5 can depart from original position together, after environmental forces is withdrawn, floating drum 5 and mooring ship shape FPSO or the FSO on it can be under the effect of tension leg type mooring fast 3, be pulled original position, thereby play ship shape FPSO or the positioning moored at sea effect of FSO.
That above-mentioned mooring fast 7 can be selected for use is fine quality, the nylon cable or the wirerope of good springiness, resislance to corrosion from sea water, or at nylon cable two ends Wearing-resistant chain is set.
The positioning moored step of present embodiment is as follows:
(1) nine anchor fittings 2 is fixedly mounted on the desired location in seabed respectively, on each anchor fitting 2, connects a mooring fast 3 then respectively;
(2) open the water filling device of floating drum 5, injecting seawater in floating drum 5 makes it sink to the seabed, nine mooring fasts 3 are connected on the circumferential mooring point 4 of floating drum 5, open the freeing arrangement of floating drum 5 then, seawater in the floating drum 5 are discharged, rely on the buoyancy of floating drum 5 self, strain 9 mooring fasts 3, make it produce certain pretension, every mooring fast 3 becomes the θ angle with the seabed horizon;
(3) with towboat ship shape FPSO or FSO buoyancy aid 5 are dragged to this marine site, with mooring in the other end mooring of the mooring fast 7 at floating drum 5 tops on buoyancy aid 8, form positioning moored to the single-point type of buoyancy aid 8.
Use 5 couples of FPSO of floating drum or FSO buoyancy aid 5 and carry out single-point type when positioning moored, determine mooring fast 3 and the horizontal angle theta in seabed according to the depth of water, when the depth of water during less than 50 meters, its angle theta should be 30 ° (as shown in Figure 7), and when the depth of water was 200 meters, its angle theta should be 60 ° (as shown in Figure 9), the shallow more angle theta angle of the depth of water is more little, variation range is 30 °～60 °, and in actual use, the operating water depth of this tension leg single-point type should be less than 200 meters.
In the various embodiments described above, the quantity of mooring fast 3 is selected for use according to the marine environment condition, and environment should select when relaxing less, and environment is multiselect then badly.
Claims (10)
1, a kind of mooring is positioned at the buoyancy aid in shallow water marine site, it comprises buoyancy aid body and the connected mooring positioning device with feeding/discharging device, it is characterized in that: described mooring positioning device comprise one group be installed in the anchor fitting in seabed and be connected to each described anchor fitting and each buoyancy aid body moored position between the tension leg type mooring fast with pretension, described pretension makes described buoyancy aid keep the reserve buoyance of its full load displacement 5%～10%, and the moored position on the described buoyancy aid body is 3～4 places around described buoyancy aid body setting.
2, a kind of mooring as claimed in claim 1 is positioned at the buoyancy aid in shallow water marine site, it is characterized in that: the angle between described mooring fast and the seabed horizon changes with being increased between 30 °～90 ° of the depth of water.
3, a kind of mooring as claimed in claim 1 is positioned at the buoyancy aid in shallow water marine site, it is characterized in that: each moored position on the described buoyancy aid body is provided with 2～4 mooring points.
4, a kind of mooring as claimed in claim 2 is positioned at the buoyancy aid in shallow water marine site, it is characterized in that: each moored position on the described buoyancy aid body is provided with 2～4 mooring points.
5, be positioned at the buoyancy aid in shallow water marine site as claim 1 or 2 or 3 or 4 described a kind of moorings, it is characterized in that: described buoyancy aid body is a kind of in floating production storage unit or the floating storage vessel.
6, be positioned at the buoyancy aid in shallow water marine site as claim 1 or 2 or 3 or 4 described a kind of moorings, it is characterized in that: described buoyancy aid body is a floating drum, be provided with a mooring ear at the top of described floating drum, connect another mooring fast on described mooring ear, the other end of this mooring fast connects a kind of in ship shape floating production storage unit or the ship shape floating storage vessel.
7, a kind of mooring as claimed in claim 6 is positioned at the buoyancy aid in shallow water marine site, it is characterized in that: connect described mooring fast between described floating drum and the anchor fitting and the angle between the horizon of seabed, change with being increased between 30 °～60 ° of the depth of water.
8, be positioned at the buoyancy aid in shallow water marine site as claim 1 or 2 or 3 or 4 or 7 described a kind of moorings, it is characterized in that: described anchor fitting is a kind of in piled anchor or the suction anchor.
9, a kind of mooring as claimed in claim 5 is positioned at the buoyancy aid in shallow water marine site, it is characterized in that: described anchor fitting is a kind of in piled anchor or the suction anchor.
10, a kind of mooring as claimed in claim 6 is positioned at the buoyancy aid in shallow water marine site, it is characterized in that: described anchor fitting is a kind of in piled anchor or the suction anchor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620113681 CN2900351Y (en) | 2006-05-17 | 2006-05-17 | Float position tieing at shallow sea water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620113681 CN2900351Y (en) | 2006-05-17 | 2006-05-17 | Float position tieing at shallow sea water |
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| CN2900351Y true CN2900351Y (en) | 2007-05-16 |
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| CN 200620113681 Expired - Lifetime CN2900351Y (en) | 2006-05-17 | 2006-05-17 | Float position tieing at shallow sea water |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105019471A (en) * | 2015-08-13 | 2015-11-04 | 山东科技大学 | Inclined type barrel-shaped foundation mooring system and construction method thereof |
| CN105329410A (en) * | 2014-06-06 | 2016-02-17 | 上海海郑海洋建设工程技术有限公司 | Floating body gauge pile |
| CN105752285A (en) * | 2016-02-03 | 2016-07-13 | 大连理工大学 | Rigidity steel tube tension tendon positioning system for connecting multiple floating bowls in series |
| CN110654510A (en) * | 2019-10-30 | 2020-01-07 | 惠生（南通）重工有限公司 | Offshore wind power platform group with shared mooring |
| CN111824331A (en) * | 2019-04-22 | 2020-10-27 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Single point mooring system, mooring platform and mooring bearing of ship |
| CN112356980A (en) * | 2020-11-17 | 2021-02-12 | 江苏科技大学 | Anchoring system for underwater landing of submersible vehicle |
| CN114030563A (en) * | 2021-12-13 | 2022-02-11 | 中国海洋石油集团有限公司 | Multi-point mooring system suitable for cylindrical FPSO and design method thereof |
| CN114162268A (en) * | 2021-12-31 | 2022-03-11 | 清华大学深圳国际研究生院 | Mooring device for floating body in middle and shallow water area and installation method |
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2006
- 2006-05-17 CN CN 200620113681 patent/CN2900351Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105329410A (en) * | 2014-06-06 | 2016-02-17 | 上海海郑海洋建设工程技术有限公司 | Floating body gauge pile |
| CN105329410B (en) * | 2014-06-06 | 2017-11-21 | 上海海郑海洋建设工程技术有限公司 | Floating body guide pile |
| CN105019471A (en) * | 2015-08-13 | 2015-11-04 | 山东科技大学 | Inclined type barrel-shaped foundation mooring system and construction method thereof |
| CN105752285A (en) * | 2016-02-03 | 2016-07-13 | 大连理工大学 | Rigidity steel tube tension tendon positioning system for connecting multiple floating bowls in series |
| CN105752285B (en) * | 2016-02-03 | 2017-08-22 | 大连理工大学 | A kind of rigid steel pipes tension tendon alignment system for many floating drums of connecting |
| CN111824331A (en) * | 2019-04-22 | 2020-10-27 | 广州船舶及海洋工程设计研究院（中国船舶工业集团公司第六0五研究院） | Single point mooring system, mooring platform and mooring bearing of ship |
| CN110654510A (en) * | 2019-10-30 | 2020-01-07 | 惠生（南通）重工有限公司 | Offshore wind power platform group with shared mooring |
| CN112356980A (en) * | 2020-11-17 | 2021-02-12 | 江苏科技大学 | Anchoring system for underwater landing of submersible vehicle |
| CN112356980B (en) * | 2020-11-17 | 2021-12-17 | 江苏科技大学 | Anchoring system for underwater landing of submersible vehicle |
| CN114030563A (en) * | 2021-12-13 | 2022-02-11 | 中国海洋石油集团有限公司 | Multi-point mooring system suitable for cylindrical FPSO and design method thereof |
| CN114030563B (en) * | 2021-12-13 | 2024-05-14 | 中国海洋石油集团有限公司 | Multi-point mooring system suitable for cylindrical FPSO and design method thereof |
| CN114162268A (en) * | 2021-12-31 | 2022-03-11 | 清华大学深圳国际研究生院 | Mooring device for floating body in middle and shallow water area and installation method |
| CN114162268B (en) * | 2021-12-31 | 2022-10-14 | 清华大学深圳国际研究生院 | Mooring device for floating body in shallow and medium water area and mounting method |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
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| CX01 | Expiry of patent term |
Granted publication date: 20070516 |
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