CN106894759B - A kind of pile legs of self-elevating drilling platform actively pierces through the porous drill bit of a brill and method - Google Patents
A kind of pile legs of self-elevating drilling platform actively pierces through the porous drill bit of a brill and method Download PDFInfo
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- CN106894759B CN106894759B CN201710257450.2A CN201710257450A CN106894759B CN 106894759 B CN106894759 B CN 106894759B CN 201710257450 A CN201710257450 A CN 201710257450A CN 106894759 B CN106894759 B CN 106894759B
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- rock bit
- mandrel
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- 238000005553 drilling Methods 0.000 title claims abstract description 77
- 241001074085 Scophthalmus aquosus Species 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 50
- 102000002322 Egg Proteins Human genes 0.000 claims description 23
- 108010000912 Egg Proteins Proteins 0.000 claims description 23
- 210000003278 egg shell Anatomy 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000013535 sea water Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
-
- 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
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/605—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a core-bit
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/001—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor specially adapted for underwater drilling
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/12—Underwater drilling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of pile legs of self-elevating drilling platform actively to pierce through the porous drill bit of a brill and method, wherein the drill bit includes that top is provided with the drill main body of male joint and the multiple rock bit being mounted on drill main body；Drill main body can be connected by male joint with the drill string bottom of drilling machine；Multiple branches are stretched out in the bottom of drill main body with being uniformly distributed formula around, and the different location of each branch installs multiple telescopic rods respectively, and the end of each telescopic rod is respectively provided with mandrel；Multiple rock bit are separately mounted on each mandrel；It is additionally provided with inner flow passage inside drill main body, intermediate duct is offered in each branch, telescopic rod and mandrel, the bottom of each rock bit offers hydrophthalmia；The intermediate duct of each branch, telescopic rod and mandrel is connected with the inner flow passage of drill main body, and the hydrophthalmia of rock bit and the intermediate duct of mandrel are connected.The present invention, which may be implemented to bore under one time, forms multiple eyelets, effectively improves and actively pierces through bore operation efficiency.
Description
Technical field
The present invention relates to a kind of drill bit and method more particularly to a kind of pile legs of self-elevating drilling platform active thorns of breaking ground that drill
Wear the porous drill bit of a brill and method.
Background technique
Self-elevating drilling platform is that sea is drilled one of important equipment of well, is had become at present in order to which 120 meters of the depth of water with inland sea
Domain is drilled the main force of well operations equipment.Self-elevating drilling platform supports hull and drilling machine etc. by the spud leg for standing on seabed and sets
Standby, hull and operating equipment rise to certain height above sea level, carry out probing and completion practice.However, standing in seabed superficial part soil
Spud leg in layer bears hull, equipment and operating load, can inevitably destroy seabed superficial part soil layer and unstability.Jack-up rigs are flat
The phenomenon that platform spud leg penetrates submarine soil layer suddenly and quickly enters mud referred to as " is pierced through ".Puncture accident occurs for self-elevating drilling platform
When, platform can be damaged, or even sinking, threaten personnel safety, economic loss is huge.The puncture accident of burst is jack up
One cannot be neglected accident risk during drilling platforms safety work.In order to avoid piercing through the generation of accident, need sufficiently
Self-elevating drilling platform is proved in the operation feasibility of target well site position, the final driving depth of science judgment spud leg and the soil body are held
Loading capability.Depth is shallower if it exists and the hard stratum of thinner thickness, and be located at the thicker soil intensity under the thin hard stratum compared with
It is low, can image be compared to " egg shell " stratum, pile legs of self-elevating drilling platform is stepped down on such " egg shell " stratum, can be faced
Greatly pierce through risk.In order to take precautions against puncture risk, before the position of self-elevating drilling platform target well site in place, need to artificially locate
Reason is fallen to design " egg shell " stratum at spud leg position, i.e., breaks " egg shell " using actively piercing through bore mode.
" egg shell " stratum brill is carried out currently, actively piercing through to generally use conventional drilling drill bit or be equipped with re-drill bit
Hole.In order to improve the spud leg bearing capacity of self-elevating drilling platform, generally the huge shoe of sectional area can be installed in spud leg bottom
Structure, and huge shoe make spud leg step down in the area on submarine soil layer also can be huge, therefore avoid spud leg occur pierce through thing
Therefore active pierce through drilling area also can be huge.Break huge " egg shell " stratum of area to actively drill, needs
Dozens or even hundreds of hole is bored in stratum, causes to need to remove drill string ability tens times even up to a hundred times using conventional bit drilling
Bore operation is actively pierced through in completion, and operating efficiency is extremely low, and operating cost is high, conventional for the marine bore operation of Gao Fei
Bit bore realizes that the mode actively pierced through is less economical.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of pile legs of self-elevating drilling platform actively pierce through one brill it is porous
Drill bit and method by stretching out multiple branches in drill main body bottom, and install multiple rock bit, and boring under realizing one time can
Form multiple eyelets, what large area expeditiously destroyed " egg shell " stratum actively pierces through operation, and preferably " egg is broken in drilling
Shell " stratum is greatly decreased and removes drill string operation, effectively improves and actively pierces through bore operation efficiency, reduces and actively breaks " egg
Shell " stratum operation expense pierces through risk to reduce self-elevating drilling platform pitching pile, avoids self-elevating drilling platform unstability accident
Occur, ensures that operation safety provides technical support.
To achieve the above object, the present invention takes following technical scheme: a kind of pile legs of self-elevating drilling platform actively puncture
One bores porous drill bit, which is characterized in that the drill bit includes that top is provided with the drill main body of male joint and is mounted on the brill
Multiple rock bit in head main body；The drill main body can be connected by the male joint with the drill string bottom of drilling machine；
Multiple branches are stretched out in the bottom of the drill main body with being uniformly distributed formula around, and the different location of each branch is pacified respectively
Multiple telescopic rods are filled, the end of each telescopic rod is respectively provided with mandrel；Multiple rock bit are separately mounted to each described
On mandrel；It is additionally provided with inner flow passage inside the drill main body, is offered in each branch, telescopic rod and mandrel
Between duct, the bottom of each rock bit offers hydrophthalmia；Each branch, telescopic rod and mandrel the intermediate duct
It is connected with the inner flow passage of the drill main body, in the hydrophthalmia of the rock bit and the described of the mandrel
Between duct be connected.
The rock bit is the gear wheel designed with hydrodynamic(al) power drive, and the rock bit can be under hydrodynamism around institute
State mandrel rotation.
The telescopic rod is fluid pressure type telescopic rod.
The drill main body and rock bit are all made of steel body foundry engieering and are process.
A kind of pile legs of self-elevating drilling platform actively pierces through a porous method of brill, comprising the following steps:
1) pile legs of self-elevating drilling platform as described in any one of the above embodiments is actively pierced through into a porous drill bit of brill and passes through pin thread
Connector is installed to the drill string bottom of drilling machine, and the inner flow passage of drill main body is connected with the drilling mud pump in drilling circulation system
It is logical；
2) it controls and is bored under drilling machine, seawater is pumped by drill string and actively pierces by the drilling mud pump in drilling circulation system
The porous drill bit of a brill is worn, the intermediate duct of each telescopic rod is then branched to by the inner flow passage of drill main body, then passes through connection
The intermediate duct of the mandrel of rock bit enters rock bit, and goes out from the hydrophthalmia of each rock bit bottom, forms water-jet
Stream forms hydraulic blow to " egg shell " stratum；Rock bit rotation is driven to generate torque, the telescopic rod in each branch simultaneously
The bit pressure of rock bit is provided, realizes the drilling of the rock bit in each branch, is generated by impact and is cut for " egg shell " stratum
The effect of cutting；Multiple rock bit in multiple branches are crept into simultaneously, are bored under one time and are capable of forming multiple eyelets, single time drilling can
The drilling of larger diameter is formed, realizes that pile legs of self-elevating drilling platform actively pierces through a porous bore operation of brill.
The invention adopts the above technical scheme, which has the following advantages: 1, a kind of jack-up rigs of the invention are flat
Platform spud leg actively pierces through the porous drill bit of a brill and method, by stretching out multiple branches in drill main body bottom, and installs multiple teeth
Drill bit is taken turns, is bored under realizing one time and is capable of forming multiple eyelets, the active that large area expeditiously destroys " egg shell " stratum is pierced through
Operation, preferably " egg shell " stratum is broken in drilling, is greatly decreased and is removed drill string operation, effectively improves and actively pierce through bore operation
Efficiency reduces and actively breaks " egg shell " stratum operation expense, pierces through risk to reduce self-elevating drilling platform pitching pile, avoids certainly
The generation of lift-type drilling platforms unstability accident ensures that operation safety provides technical support.2, a kind of jack-up rigs of the invention
Platform leg actively pierces through the porous drill bit of a brill and method, by the way that male joint is arranged at the top of drill main body to gear wheel in inside
The runner of drill bit bottom perforation, makes seawater go out to form water jet from hydrophthalmia, forms hydraulic blow to " egg shell " stratum；Together
When driving rock bit rotation generate torque, hydraulic telescopic rod provide rock bit bit pressure realize rock bit drilling, it is right
" egg shell " stratum generates the effects of impact is with cutting, breaks " egg shell ", destroys the globality of the soil body, reduces soil strength,
To weaken soil body unit area bearing capacity, the bore operation that pile legs of self-elevating drilling platform actively pierces through, operating efficiency are realized
It is higher.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is main view of the invention；
Fig. 3 is top view of the invention；
Fig. 4 is bottom view of the invention；
Fig. 5 is the structural schematic diagram of multiple spot distribution mandrel installation gear wheel of the invention；
Fig. 6 is the soil body pore-forming effect diagram after present invention drilling.
Specific embodiment
The present invention is described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1~fig. 5, a kind of pile legs of self-elevating drilling platform provided by the invention actively pierces through a brill multi-hole drill
Head comprising drill main body 1 and rock bit 2.Wherein, drill main body 1 is vertebral body structure, and the top of drill main body 1 is provided with
Male joint 11, drill main body 1 can be connected by male joint 11 with the drill string bottom of drilling machine；The bottom of drill main body 1 to
Surrounding stretches out multiple branches 12 with being uniformly distributed formula, and multiple hydraulic telescopic rods 13 are installed in different location respectively by each branch 12,
The end of each hydraulic telescopic rod 13 is respectively provided with mandrel 14；Inner flow passage 15, each branch are additionally provided with inside drill main body 1
12, intermediate duct (not shown), each branch 12, hydraulic telescopic rod 13 are offered in hydraulic telescopic rod 13 and mandrel 14
And the intermediate duct of mandrel 14 is connected with the inner flow passage 15 of drill main body 1.Multiple rock bit 2 are separately mounted to respectively
On mandrel 14, the bottom of each rock bit 2 offers hydrophthalmia 21, and hydrophthalmia 21 is connected with the intermediate duct of mandrel 14；Tooth
It takes turns drill bit 2 and uses the gear wheel with the design of hydrodynamic(al) power drive for being directed to special formation, it can be around mandrel 14 under hydrodynamism
Rotation, with preferably cut with impact failure " egg shell " stratum, to form " 1+N " formula drill bit.
In above-described embodiment, various forms of hydraulic telescopic rods 13 can be installed in the branch 12 of 1 bottom of drill main body, and
Different rock bit 2 is further installed, to form " 1+N " formula drill bit；It is of course also possible to all hydraulic be stretched using identical
Contracting bar 13 and rock bit 2.
In above-described embodiment, drill main body 1 and rock bit 2 are all made of steel body foundry engieering and are process.
A porous drill bit of brill is actively pierced through based on a kind of above-mentioned pile legs of self-elevating drilling platform, the present invention also provides one
Kind pile legs of self-elevating drilling platform actively pierces through a porous method of brill, comprising the following steps:
1) a kind of above-mentioned pile legs of self-elevating drilling platform a porous drill bit of brill is actively pierced through to pacify by male joint 11
It is attached to the drill string bottom of drilling machine, the inner flow passage 15 of drill main body 1 is connected with the drilling mud pump in drilling circulation system.
2) it controls and is bored under drilling machine, seawater is pumped by drill string and actively pierces by the drilling mud pump in drilling circulation system
The porous drill bit of a brill is worn, the intermediate duct of each hydraulic telescopic rod 13 is then branched to by the inner flow passage 15 of drill main body 1, then
Intermediate duct by connecting the mandrel 14 of rock bit 2 enters rock bit 2, and the hydrophthalmia 21 from each 2 bottom of rock bit
Or gone out in nozzle, water jet is formed, hydraulic blow is formed to " egg shell " stratum, while the rotation of rock bit 2 being driven to generate
Torque.Hydraulic telescopic rod 13 in each branch 12 provides the bit pressure of rock bit 2, realizes the rock bit in each branch 12
2 drilling generates the effects of impact is with cutting to " egg shell " stratum, breaks " egg shell ", destroy the globality of the soil body, reduce
Soil strength realizes the bore operation that pile legs of self-elevating drilling platform actively pierces through to weaken soil body unit area bearing capacity.
Meanwhile as shown in fig. 6, since multiple branches 12 are stretched out in the bottom of drill main body 1 with being uniformly distributed formula around, often
Multiple hydraulic telescopic rods 13 are installed in different location respectively by a branch 12, and the end of each hydraulic telescopic rod 13 is respectively provided with mandrel
14, various forms of rock bit 2 can be installed, to form " 1+N " formula drill bit, bored under one time and be capable of forming multiple eyelets,
It destroys hard stratum to improve and actively pierces through drilling efficiency, destroy " egg shell " hard stratum of larger area, single time drilling energy
The drilling of larger diameter is enough formed, distribution of boreholes area is the table that conventional rock bit cooperates the tool that spuds in composed by reamer
Layer drilling mode is formed by several times of drilling area, effectively improves and actively pierces through drilling efficiency, reduces round trip, reduces
Operating cost.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each component, setting position and its connection type etc.
It may be changed, all equivalents and improvement carried out based on the technical solution of the present invention should not arrange
In addition in protection scope of the present invention.
Claims (5)
1. a kind of pile legs of self-elevating drilling platform actively pierces through a porous drill bit of brill, which is characterized in that the drill bit is set including top
It is equipped with the drill main body of male joint and the multiple rock bit being mounted on the drill main body；
The drill main body can be connected by the male joint with the drill string bottom of drilling machine；The bottom of the drill main body to
Surrounding stretches out multiple branches with being uniformly distributed formula, and the different location of each branch installs multiple telescopic rods, Mei Yisuo respectively
The end for stating telescopic rod is respectively provided with mandrel；Multiple rock bit are separately mounted on each mandrel；
It is additionally provided with inner flow passage inside the drill main body, offers centre in each branch, telescopic rod and mandrel
The bottom in duct, each rock bit offers hydrophthalmia；The intermediate duct of each branch, telescopic rod and mandrel is equal
It is connected with the inner flow passage of the drill main body, the hydrophthalmia of the rock bit and the centre of the mandrel
Duct is connected；
The rock bit is the gear wheel designed with hydrodynamic(al) power drive, and the rock bit can be under hydrodynamism around the core
Axis rotation.
2. a kind of pile legs of self-elevating drilling platform as described in claim 1 actively pierces through a porous drill bit of brill, which is characterized in that
The telescopic rod is fluid pressure type telescopic rod.
3. a kind of pile legs of self-elevating drilling platform as described in claim 1 actively pierces through a porous drill bit of brill, which is characterized in that
The drill main body and rock bit are all made of steel body foundry engieering and are process.
4. a kind of pile legs of self-elevating drilling platform as claimed in claim 2 actively pierces through a porous drill bit of brill, which is characterized in that
The drill main body and rock bit are all made of steel body foundry engieering and are process.
5. a kind of pile legs of self-elevating drilling platform actively pierces through a porous method of brill, comprising the following steps:
1) pile legs of self-elevating drilling platform according to any one of claims 1 to 4 a porous drill bit of brill is actively pierced through to lead to
Cross the drill string bottom that male joint is installed to drilling machine, the inner flow passage and the drilling mud pump in drilling circulation system of drill main body
It is connected；
2) it controls and is bored under drilling machine, seawater is pumped by drill string and actively pierces through one by the drilling mud pump in drilling circulation system
Porous drill bit is bored, the intermediate duct of each telescopic rod is then branched to by the inner flow passage of drill main body, then pass through connection gear wheel
The intermediate duct of the mandrel of drill bit enters rock bit, and goes out from the hydrophthalmia of each rock bit bottom, forms water jet, right
" egg shell " stratum forms hydraulic blow；Rock bit rotation is driven to generate torque simultaneously, the telescopic rod in each branch provides
The bit pressure of rock bit realizes the drilling of the rock bit in each branch, generates impact to " egg shell " stratum and makees with cutting
With；Multiple rock bit in multiple branches are crept into simultaneously, are bored under one time and are capable of forming multiple eyelets, single time drilling is capable of forming
The drilling of larger diameter realizes that pile legs of self-elevating drilling platform actively pierces through a porous bore operation of brill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257450.2A CN106894759B (en) | 2017-04-19 | 2017-04-19 | A kind of pile legs of self-elevating drilling platform actively pierces through the porous drill bit of a brill and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710257450.2A CN106894759B (en) | 2017-04-19 | 2017-04-19 | A kind of pile legs of self-elevating drilling platform actively pierces through the porous drill bit of a brill and method |
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| Publication Number | Publication Date |
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| CN106894759A CN106894759A (en) | 2017-06-27 |
| CN106894759B true CN106894759B (en) | 2019-08-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716364B (en) * | 2018-05-16 | 2019-09-20 | 太重（天津）滨海重型机械有限公司 | Group's digging drilling machine and underwater group dig borer system |
| CN109339708B (en) * | 2018-10-29 | 2020-05-15 | 武大巨成结构股份有限公司 | Hole forming process of anchoring hole bottom reaming device |
| CN112267460B (en) * | 2020-09-03 | 2021-12-17 | 中海油能源发展股份有限公司 | Active puncturing pile shoe structure of self-elevating drilling platform and operation method thereof |
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| US2400853A (en) * | 1941-07-08 | 1946-05-21 | Walter P Stilley | Well drilling apparatus |
| US3773121A (en) * | 1970-11-20 | 1973-11-20 | Tone Boring Co | Reaction minimized earth boring |
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| CN1954130A (en) * | 2004-03-30 | 2007-04-25 | 阿尔瓦格隧道支架有限公司 | Method and device for drilling holes in the ground or in rock |
| CN205653810U (en) * | 2016-03-29 | 2016-10-19 | 中国水利水电科学研究院 | Be used for that soft base of marine wind power is reinforced (rfd) to shake towards mooring pile and construction equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320986B (en) * | 2016-10-08 | 2018-07-10 | 郑州神利达钻采设备有限公司 | A kind of accurate Drilling bore bit of anti-deviation |
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2017
- 2017-04-19 CN CN201710257450.2A patent/CN106894759B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1062050A (en) * | 1911-10-10 | 1913-05-20 | Alfred C Stewart | Well-drilling apparatus. |
| US2400853A (en) * | 1941-07-08 | 1946-05-21 | Walter P Stilley | Well drilling apparatus |
| US3773121A (en) * | 1970-11-20 | 1973-11-20 | Tone Boring Co | Reaction minimized earth boring |
| CN2199304Y (en) * | 1994-05-16 | 1995-05-31 | 聂敬太 | Diving-type rolling rubbing circular pile drill |
| CN1954130A (en) * | 2004-03-30 | 2007-04-25 | 阿尔瓦格隧道支架有限公司 | Method and device for drilling holes in the ground or in rock |
| CN205653810U (en) * | 2016-03-29 | 2016-10-19 | 中国水利水电科学研究院 | Be used for that soft base of marine wind power is reinforced (rfd) to shake towards mooring pile and construction equipment thereof |
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