A kind of combined type ocean gas hydrate seismic exploration drilling tool
Technical field
This utility model relates to a kind of geological prospecting drilling tool, especially a kind of combined type ocean gas hydrate
Seismic exploration drilling tool, belongs to geological exploration equipment technical field.
Background technology
Gas hydrates (Natural Gas Hydrate is called for short NGH), are distributed in subsea strata mostly
In, not only rich reserves, and its energy density is big, and (hydrate of 1 volume at most can produce 164 volumes
Natural gas), the advantages such as the dusty gas that produces after gas hydrates also have burning simultaneously is few, therefore
It it is a kind of preferably clean energy resource.
Since finding to store a large amount of gas hydrates in seabed, how to carry out efficient and economical
Exploration and development becomes a problem demanding prompt solution.The method carrying out ocean hydrate exploration at present mainly has BSR
(Bottom Simulating Reflector simulated sea bottom reflecting layer) technology, drill sampling technology and survey
Well technology, and carrying out sea bottom hydrate sampling by geological drilling is a kind of most straightforward approach.To this end, state
The sampling technique of hydrate is studied by inside and outside a lot of experts and scholars, have developed numerous heat-insulation pressure keepings
Drilling tool.But, the drilling process of current above-mentioned heat-insulation pressure keeping Sampling driller coupling is first to choose position, hole to creep into,
Then carry out complete opening coring with pressurize drilling tool or carry and drill through core, due to this method coring often, creeping into
Speed is slow, causes drilling cost to improve the most therewith.
Utility model content
This utility model provides a kind of combined type ocean gas hydrate seismic exploration drilling tool, and it can be according to not
Same stratum characteristic, it is achieved quick-replaceable difference drilling tool in cord drill-rod, reaches to improve rate of penetration, reduction
The purpose of drilling cost.
This utility model above-mentioned purpose is achieved through the following technical solutions:
A kind of combined type ocean gas hydrate seismic exploration drilling tool, including the comprehensive drilling tool of measurement while drilling, guarantor
Pressure core bit and major diameter not pressurize core bit;The comprehensive drilling tool of described measurement while drilling, pressurize core bit
With the borehole wire-line coring drilling rod that major diameter not pressurize core bit mates same specification.
Above-mentioned combined type ocean gas hydrate seismic exploration drilling tool, the comprehensive drilling tool of described measurement while drilling includes
The first salvaging mechanism of setting gradually from top to bottom, the first bullet card detent mechanism, the first hitch, first
Single action mechanism and torque transmission mechanism;The lower end of described torque transmission mechanism arranges sensor measurement pipe nipple, described sensor
Measure in pipe nipple and be provided with resistivity sensor, temperature sensor and pressure transducer;Described first single action mechanism
Lower end connect battery short section, signal storage and send pipe nipple, described signal storage and send pipe nipple pass through mud
The signal that sensor measurement pipe nipple is gathered by slurry pulse sends the data reception module to drilling ship.
Above-mentioned combined type ocean gas hydrate seismic exploration drilling tool, described pressurize core bit includes from upper
The second salvaging mechanism of setting gradually under to, the second bullet card detent mechanism, the second hitch, corer,
First advanced coring bit and coring block spring;Described second bullet card detent mechanism is double elastic-clip structure;Described take
Core pipe is equipped with range controlling mechanism and ball valve sealing mechanism, and described ball valve sealing mechanism is for realizing the close of core
Close pressurize, suppression gas hydrates sample twice decomposition during salvaging.
Above-mentioned combined type ocean gas hydrate seismic exploration drilling tool, described major diameter not pressurize core bit
For firm hard formation structure, for obtaining length and the big core sample of diameter dimension, it is provided with the 3rd salvaging
Mechanism, the 3rd bullet card detent mechanism, the 3rd hitch, the second single action mechanism, coring jump ring and the second surpass
Front coring bit, described 3rd salvaging mechanism, the 3rd bullet card detent mechanism, the 3rd hitch, the second list
The advanced coring bit of motivation structure, coring jump ring and second is sequentially connected in series from top to bottom.
This utility model is mainly used in identification and the sampling on ocean gas hydrate stratum, and its measurement while drilling is complete
Face drilling tool, pressurize core bit and major diameter not pressurize core bit mate the borehole wire-line coring drilling rod of same specification,
Purpose can be crept into according to different, realize freely changing in cord drill-rod by rope salvaging technique.Creep into
During, first in cord drill-rod under enter the comprehensive drilling tool of measurement while drilling, carry out the total cost management holed, with
Improve drilling efficiency, owing to the front end of the comprehensive drilling tool of measurement while drilling is mounted with sensor measurement pipe nipple, can will adopt
The change information of formation temperature, pressure and the resistivity of collection, is stored by signal and sends pipe nipple and transmit in time
On drilling ship, the staff on drilling ship, according to the subsea strata measurement data obtained, judges stratum
In whether contain gas hydrates;After the data of stratum measurement show abnormality, rope salvaging can be passed through
Comprehensive for measurement while drilling drilling tool is salvaged out by instrument in time, changes pressurize core bit or the non-pressurize of major diameter
Core bit is sampled operation.As can be seen here, combined type ocean natural gas described in the utility model is used
Hydrate formation exploration drilling tool, substantially reduces drilling time, saves operating expenses, have obvious warp
Ji benefit.
Accompanying drawing explanation
Fig. 1 is measurement while drilling comprehensive drilling tool structure schematic diagram;
Fig. 2 is part A (top half) the structure enlarged diagram in Fig. 1;
Fig. 3 is part B (the latter half) the structure enlarged diagram in Fig. 1;
Fig. 4 is pressurize core bit structural representation;
Fig. 5 is C portion (top half) the structure enlarged diagram in Fig. 4;
Fig. 6 is D part (the latter half) the structure enlarged diagram in Fig. 4;
Fig. 7 is major diameter not pressurize core bit structural representation;
Fig. 8 is E part (top half) the structure enlarged diagram in Fig. 7;
Fig. 9 is F part (the latter half) the structure enlarged diagram in Fig. 7.
In figure, each list of reference numerals is: 1, the comprehensive drilling tool of measurement while drilling, 1-1, the first salvaging mechanism, 1-2,
One bullet card detent mechanism, 1-3, the first hitch, 1-4, the first single action mechanism, 1-5, signal storage and
Send pipe nipple, 1-6, battery short section, 1-7, torque transmission mechanism, 1-8, sensor and measurement pipe nipple, 2, pressurize
Core bit, 2-1, the second salvaging mechanism, 2-2, the second bullet card detent mechanism, 2-3, the second hitch,
2-4, corer, 2-5, range controlling mechanism, 2-6, ball valve sealing mechanism, 2-7, the first advanced core drill
Head, 2-8, coring block spring, and 3, major diameter not pressurize core bit, 3-1, the 3rd salvaging mechanism, 3-2,
Three bullet card detent mechanisms, 3-3, the 3rd hitch, 3-4, the second single action mechanism, 3-5, coring jump ring,
3-6, the second advanced coring bit.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
Referring to Fig. 1, Fig. 4, Fig. 7, this utility model is surveyed for a kind of combined type ocean gas hydrate stratum
Prospecting bit has, including the comprehensive drilling tool of measurement while drilling 1, pressurize core bit 2 and major diameter not pressurize core bit 3
Three parts, the comprehensive drilling tool of described measurement while drilling 1, pressurize core bit 2 and major diameter not pressurize core bit 3
Mate the borehole wire-line coring drilling rod of same specification, purpose can be crept into according to different, real by rope salvaging technique
Freely change in cord drill-rod now.Combined type ocean gas hydrate seismic exploration described in the utility model
Drilling tool disclosure satisfy that the needs of deep seafloor natural gas hydrate stratum exploration sampling, and it both can be in the depth of water
Exploratory hole within 1500m, seabed drilling depth 500m uses, it is also possible to other mineral resources for seabed
Exploration.
Referring to Fig. 1 to Fig. 3, in combined type ocean gas hydrate seismic exploration described in the utility model
In drilling tool, the first salvaging mechanism 1-1 that the comprehensive drilling tool of described measurement while drilling 1 includes setting gradually from top to bottom,
First bullet card detent mechanism 1-2, the first hitch 1-3, the first single action mechanism 1-4 and torque transmission mechanism 1-7;
The lower end of described torque transmission mechanism 1-7 arranges sensor measurement pipe nipple 1-8, described sensor measurement pipe nipple 1-8
In be provided with resistivity sensor, temperature sensor and pressure transducer;Under described first single action mechanism 1-4
End connects battery short section 1-6, signal storage and sends pipe nipple 1-5, and described signal stores and sends pipe nipple 1-5
The signal gathered by sensor measurement pipe nipple by mud-pulse sends the data reception module to drilling ship.
Described first salvaging mechanism 1-1 is used for ensureing that the comprehensive drilling tool of measurement while drilling is not in the case of carrying brill, it is achieved fast
Speed rope salvaging.Described first bullet card detent mechanism 1-2, the first hitch 1-3 are used for ensureing whole drilling tool
Location, prevent the upper and lower play of drilling tool.It is the most two-part that described first single action mechanism 1-4 achieves drilling tool
Motion separates, and decreases the abrasion of drilling tool.Described torque transmission mechanism 1-7 is by guaranteeing with outer drill bit spline fitted
The rotary drilling together with outer tube of measurement while drilling drilling tool, improves rate of penetration.On ocean gas hydrate stratum
During exploration is crept into, first in cord drill-rod under enter the comprehensive drilling tool of measurement while drilling 1, carry out holing is complete
Face is crept into, and to improve drilling efficiency, and can be surveyed by the sensor that measurement while drilling comprehensive drilling tool 1 front end is installed
Amount pipe nipple 1-8 gathers formation temperature, pressure and the change information of resistivity, then is stored by signal and send
Pipe nipple 1-5 is delivered on drilling ship in time, and the staff on drilling ship measures according to the subsea strata obtained
Data, are judged whether contain gas hydrates in stratum, then determine whether to be come more by rope salvaging
Change core drilling tool;After the data of stratum measurement show abnormality, can pass through rope salvaging instrument in time will be with brill
Measure comprehensive drilling tool 1 to salvage out, change pressurize core bit 2 or major diameter non-pressurize core bit 3
It is sampled operation.
Referring to Fig. 4 to Fig. 6, in combined type ocean gas hydrate seismic exploration described in the utility model
In drilling tool, described pressurize core bit 2 is applicable to creeping into of the suspicious stratum of gas hydrates, and it can be protected
Hold the original position pressure of gas hydrates core, the decomposition of suppression gas hydrates.Described pressurize core drill
The second salvaging mechanism 2-1 that tool 2 includes setting gradually from top to bottom, the second bullet card detent mechanism 2-2, second
Hitch 2-3, corer 2-4, the first advanced coring bit 2-7 and coring block spring 2-8;Described second
Bullet card detent mechanism 2-2 is double elastic-clip structure;Described corer 2-4 is equipped with range controlling mechanism 2-5 and ball
Valve seal mechanism 2-6.During drilling tool is transferred, ensure that drilling tool axial location arrives by hitch 2-3
Position;During creeping into, ensure not occur between drilling tool inner and outer pipes by the second bullet card detent mechanism 2-2
The changing of the relative positions, it is achieved axial location is fixed;When creeping into coring, owing to shallow-layer coring is the deposition for non-diagenesis
Stratum, uses the first advanced coring bit 2-7, and the mud that can prevent bit port from spraying destroys core sample,
And can by coring block spring 2-8 replace common jump ring prevent enter corer 2-4 core drop.Pressurize takes
The specific works step of core drilling tool 2 is: after finding the suspicious stratum of hydrate, transfer pressurize core bit 2,
Carrying out the rope salvaging of pressurize core bit, can pull up the second salvaging mechanism 2-1 by fisher, drive takes
Core pipe 2-4 moves axially upward, drives ball valve close by range controlling mechanism 2-7 after arriving certain position
Sealing mechanism 2-6 closes, it is achieved the airtight pressurize of core, and suppression gas hydrates sample is during salvaging
Twice decomposition.
Referring to Fig. 7 to Fig. 9, in combined type ocean gas hydrate seismic exploration described in the utility model
In drilling tool, described major diameter not pressurize core bit 3 is suitable to firm hard formation structure, is used for obtaining length and straight
The core sample that footpath size is big, it be provided with the 3rd salvaging mechanism 3-1, the 3rd bullet card detent mechanism 3-2, the 3rd
Hitch 3-3, the advanced coring bit 3-6 of the second single action mechanism 3-4, coring jump ring 3-5 and second, described
3rd salvaging mechanism 3-1, the 3rd bullet card detent mechanism 3-2, the 3rd hitch 3-3, the second single action mechanism
The advanced coring bit 3-6 of 3-4, coring jump ring 3-5 and second is sequentially connected in series from top to bottom.When needs are big
When amount core carries out geological analysis, can be by the bottom of this major diameter not pressurize core bit 3 lower going-into-well, it is the 3rd years old
Hitch 3-3 and the 3rd bullet card detent mechanism 3-2, for realizing the location of drilling tool, prevents at drilling process
The upper and lower play of middle drilling tool, the second advanced coring bit 3-6 can reduce the drilling fluid erosion to rock ore deposit core, when
When drilling depth reaches the length limit of core barrel, drilling tool can be realized not by the 3rd salvaging mechanism 3-1
Carry brill to salvage, convenient and swift.