CN108104752A - For the coring device of rock salt exploration engineering and coring method - Google Patents
For the coring device of rock salt exploration engineering and coring method Download PDFInfo
- Publication number
- CN108104752A CN108104752A CN201711463132.8A CN201711463132A CN108104752A CN 108104752 A CN108104752 A CN 108104752A CN 201711463132 A CN201711463132 A CN 201711463132A CN 108104752 A CN108104752 A CN 108104752A
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- Prior art keywords
- inner tube
- coring
- drill bit
- hole
- fisher
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- 235000002639 sodium chloride Nutrition 0.000 title claims abstract description 45
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 32
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005553 drilling Methods 0.000 claims abstract description 92
- 241001449342 Chlorocrambe hastata Species 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 5
- 239000000284 extract Substances 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 230000013011 mating Effects 0.000 abstract description 5
- 238000011010 flushing procedure Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 241001074085 Scophthalmus aquosus Species 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 235000009967 Erodium cicutarium Nutrition 0.000 description 2
- 240000003759 Erodium cicutarium Species 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 241001131796 Botaurus stellaris Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001045988 Neogene Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000010442 halite Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 101150091879 neo gene Proteins 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
-
- 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/02—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors the core receiver being insertable into, or removable from, the borehole without withdrawing the drilling pipe
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of for the coring device of rock salt exploration engineering and coring method, the coring system includes drilling equipment, coring device, fisher, winch gear, control device, the corer includes an outer pipe assembly and an inner tube assembly, outer pipe assembly has a cavity in their extension direction, and inner tube assembly is mounted in cavity and can be moved along the shaft centre line direction of outer pipe assembly；The outer pipe assembly includes sequentially connected top connection, bullet card room, stablizes connector, reamer and the 4th drill bit；Said inner tube assembly includes sequentially connected fishing spearhead, bullet card, recovery tube, the adjusting of single action part, inner tube, square section, clamp spring and clip spring seat.The present invention extracts inner tube with winch and core drills through core so as to achieve the purpose that not carry by proposing the devices such as a kind of heavy caliber wire line coring device suitable for rock salt exploration engineering and mating winch.
Description
Technical field
The present invention relates to rock salt exploration engineering field, in particular to a kind of coring device for rock salt exploration engineering
With coring method.
Background technology
Rock salt deposit reconnoitres the rock salt exploratory well that need to construct, according to Ministry of Land and Resources《Salt lake and Salt Mineral Resources geologic prospect
Specification》(DZ/T0212-2002) require, in order to find out the preservation situation of rock salt resources, exploratory well must core-drilling sample
Chemical examination, obtains the grade of salt deposit and the content of poisonous and harmful element.Rock salt prospect pit simultaneously often closes two with halogen mining well construction
One, bore is big, and section of particularly coring is time-consuming and laborious, and it is low to bore effect.
At present, wire line coring technique is widely used to small-bore geologic prospect construction, existing by heavy caliber rope both at home and abroad
Rope coring process is applied to the example of coal bed gas well, but there is no and heavy caliber wire line coring technique is applied in rock salt exploration drilling
Example.Such as wire line coring technique is promoted the use of in bigbore rock salt exploration, then can reduce the drilling tool time up and down, carry
Utilization rate when high-purity so as to improve drilling efficiency, while meets the requirement in relation to specification to coring.
The content of the invention
It is a kind of for the coring device of rock salt exploration engineering and coring method present invention aims at providing, it proposes a kind of suitable
For devices such as the heavy caliber wire line coring device of rock salt exploration engineering and mating winches, with winch extract inner tube and core so as to
Achieve the purpose that not carry and drill through core.
To reach above-mentioned purpose, the present invention refers to a kind of coring system for rock salt exploration engineering, the coring system
Including drilling equipment, coring device, fisher, winch gear, control device；
The drilling equipment include to by hole explore to stablize the first drilling tool of rock stratum, exploring hole to salt
The second drilling tool in layer, the first drilling tool include sequentially connected first drill bit, the first drill collar, the first drilling rod and the first kelly bar,
Second drilling tool includes sequentially connected second drill bit, the second drill collar, the second drilling rod and the second kelly bar；
The coring device includes sequentially connected 3rd drill bit, corer, the 3rd drilling rod, third party's drilling rod；
The corer includes an outer pipe assembly and an inner tube assembly, and outer pipe assembly has in their extension direction
Chamber, inner tube assembly are mounted in cavity and can be moved along the shaft centre line direction of outer pipe assembly；
The outer pipe assembly includes sequentially connected top connection, bullet card room, stablizes connector, reamer and the 4th drill bit；
Said inner tube assembly include sequentially connected fishing spearhead, bullet card, recovery tube, adjustings of single action part, inner tube, square section,
Clamp spring and clip spring seat；
The fisher is arranged in hole, and positioned at closing at aperture, fisher is electrically connected with control device, according to control
The instruction of device is vertically lowered along hole to hole bottom with the speed set, will be dragged for spearhead and is fixed on its head；
The winch gear includes winch and a steel wire rope, and one end cigarette of steel wire rope is on the reel of winch, the other end
It is fixed on the afterbody of fisher；
The winch gear is electrically connected with control device, to the instruction rotating drum according to control device, to apply one
Extraction force straight up makes the shaft centre line that fisher carries inner tube assembly along outer pipe assembly move and take off on fisher
From outer pipe assembly.
Further, the diameter of first drill bit is more than the diameter of the second drill bit.
Further, the top connection has step in one；
When the bullet card of inner tube assembly withstands the interior step of top connection, the gap between clip spring seat end face and drill bit is 3-4
Millimeter.
Further, the fisher top is connected with a safety rope.
Further, the safety rope length for 1 meter, it is 3 millimeters a diameter of.
Further, the 3rd drill bit uses PDC drill bit.
Further, the 3rd drill bit is using the small drill bit of bottom labial surface contact area.
Further, the 3rd drill bit is using arbitrary in more mouth of a river drill bits, interlock labial surface drill bit, tooth-shape structure drill bit
It is a kind of.
Based on foregoing coring system, the present invention further mentions a kind of coring method for rock salt exploration engineering, including：
It is opened up successively using the first drilling tool and the second drilling tool in hole to salt deposit；
Coring device is transferred into hole, continues to creep into, until rock core fills inner tube；
Coring device is extracted to the 3rd drill bit and leaves hole bottom, blocks disconnected rock core, then the 3rd drilling rod and corer is divided
Hole is extracted from after；
Fisher is transferred into hole, fisher drops to hole bottom with the speed set, and spearhead is dragged in contact, and will
Fishing spearhead is fixed on its head；
Start winch rotating drum, to apply an extraction force straight up on fisher, fisher is made to carry inner tube
The shaft centre line of assembly along outer pipe assembly moves and departs from outer pipe assembly, until inner tube assembly is risen at the top of hole；
Fisher and inner tube assembly are separated, obtains rock core.
Further, the method further includes：
One spare inner tube assembly is provided；
Spare inner tube assembly is put by hole top in the 3rd drilling rod, spare inner tube assembly is connected with drilling rod on a machine；
The spare inner tube assembly of turn on pump force feed to spare inner tube assembly enters inside the outer pipe assembly in hole, cleaning bottom of hole drilling with
Rock core is made to fill the inner tube of spare inner tube assembly.
By more than technical scheme, compared with existing, significant advantageous effect is, proposes that one kind is suitable for
The devices such as the heavy caliber wire line coring device and mating winch of rock salt exploration engineering extract inner tube and core so as to reach with winch
The purpose for drilling through core is not put forward.
It should be appreciated that as long as aforementioned concepts and all combinations additionally conceived that describe in greater detail below are at this
Sample design it is not conflicting in the case of can be viewed as the disclosure subject matter a part.In addition, required guarantor
All combinations of the theme of shield are considered as a part for the subject matter of the disclosure.
Can be more fully appreciated from the following description with reference to attached drawing present invention teach that foregoing and other aspect, reality
Apply example and feature.The feature and/or advantageous effect of other additional aspects such as illustrative embodiments of the present invention will be below
Description in learn in obvious or practice by the specific embodiment instructed according to the present invention.
Description of the drawings
Attached drawing is not intended to drawn to scale.In the accompanying drawings, each identical or approximately uniform group shown in each figure
It can be indicated by the same numeral into part.For clarity, in each figure, it is not that each component is labeled.
Now, by example and the embodiment of various aspects of the invention will be described in reference to the drawings, wherein：
Fig. 1 is the structure diagram of the corer of the present invention.
1- fishing spearheads, 2- adapter couplings, 3- springs, 4- locating pieces, 5- elastic cylindrical pins, 6- refer to lance seat, 7- recovery tubes, 8-
Elastic cylindrical pin, 9- elastic cylindrical pins, 10- springs, 11- bullet cards, 12- rubber pads, 13- elastic cylindrical pins, 14- bullet decks, 15-
Elastic cylindrical pin, 16- seat rings, 17- hanging rings, 18- snap rings, 19- bullet card holders, 20- adjusting nuts, 21- supervisors, 22- steel pads,
23- rubber pads, 24- steel balls, 25- bearings, 26- bearings should, 28- bearings, 29- springs, 31- fills out tight nut, 32- seat rings street corner,
33- outer tubes, 34- bearing outsides, 35- steel balls, 37- steel balls are answered, 38- reducer unions, 39- inner tubes, 40- lower contacts, 41- corrections
Ring, 42- clamp spring baffle rings, 43- clamp springs, 44- clip spring seats, 45- drill bits.
Specific embodiment
In order to know more about the technology contents of the present invention, spy lifts specific embodiment and institute's accompanying drawings is coordinated to be described as follows.
Each side with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.
It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs presented hereinbefore and reality
Apply example and those designs described in more detail below and embodiment can in many ways in any one come it is real
It applies, this is because design disclosed in this invention and embodiment are not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone or otherwise any appropriately combined be used with disclosed by the invention.
The present invention refers to a kind of coring system for rock salt exploration engineering, and the coring system includes drilling equipment, takes
Core apparatus, fisher, winch gear, control device.
The drilling equipment include to by hole explore to stablize the first drilling tool of rock stratum, exploring hole to salt
The second drilling tool in layer, the first drilling tool include sequentially connected first drill bit, the first drill collar, the first drilling rod and the first kelly bar,
Second drilling tool includes sequentially connected second drill bit, the second drill collar, the second drilling rod and the second kelly bar.
The coring device includes sequentially connected 3rd drill bit, corer, the 3rd drilling rod, third party's drilling rod.
A kind of embodiment
By taking the exploration of Jiangsu Province Feng County teacher Zhai mining areas salt mine as an example, formation parameter is Paleogene System government's bank group and Neogene System Feng County
Group and Quaternary loose soils, wherein Paleogene System government's bank group (Eg)：Thickness is more than 1300m, is saliferous strata.
Each rock stratum drillability of section of coring refers to table 1, and the drilling parameter of corresponding one of which drilling equipment refers to table
2。
Each rock stratum drillability list table 1 of section of coring
For foregoing rock stratum, the present embodiment planned well path structure such as table 2.
Casing programme tables of data table 2
| Spud in order | Well section | Bit size/mm | Casing size/mm | Casing setting depth/m |
| One opens | 0~350 | Φ311.1 | Φ244.5 | 350 |
| Two open | 350~end well | Φ215.9 |
Corresponding drilling tool parameter can be designed as：
(1) one opens drill assembly
Φ 311.1mm drill bit+Φ 165mm drill collar+Φ 127mm drilling rod+Φ 133mm kelly bars.
(2) two open drill assembly
It is not in the mood for creeping into：
Φ 215.9mm drill bit+Φ 165mm drill collar × 1 piece+Φ 127mm drilling rod+Φ 133mm kelly bars.Core-drilling：
Φ 215.9mm drill bits+heavy caliber wire line coring device+Φ 127mm drilling rod+Φ 133mm kelly bars.
Defect detecting test is carried out to all drilling tools, downhole tool and connector before spudding in, has prevented that hindering drilling tool enters well.
Preferably, the diameter of the first drill bit is more than the diameter of the second drill bit.
With reference to Fig. 1, the corer includes an outer pipe assembly and an inner tube assembly, and outer pipe assembly has in their extension direction
There is a cavity, inner tube assembly is mounted in cavity and can be moved along the shaft centre line direction of outer pipe assembly.
The outer pipe assembly includes sequentially connected top connection, bullet card room, stablizes the devices such as connector, reamer and the 4th drill bit
Part.
Top connection processing quality must be stringent, it is ensured that bullet card fork intensity, pulling out two, top of gear step must be straight, and protects
It demonstrate,proves at grade, so that bullet card uniform force.The requirement of drill bit and reamer with it is common small-bore identical.
Said inner tube assembly include sequentially connected fishing spearhead, bullet card, recovery tube, adjustings of single action part, inner tube, square section,
The devices such as clamp spring and clip spring seat.
The processing of all bullet card holder elongated slots and elastic pin hole has to comply with drawing requirement, necessary after all bullet clamp assemblings
It keeps symmetrical and (flexible) reaches contraction, elongation freely.Recovery tube slides up and down flexibly, and bearing operation is reliable, and inner tube must protect
Maintain an equal level straight.
The free internal diameter of drill bit internal diameter and clamp spring must rationally coordinate, and the free internal diameter of clamp spring should be smaller than drill bit internal diameter by 0.3
~0.5 millimeter, it is excessive, it does not take or blocks loosely rock core, cause that midway comes off or to remain rock core excessive；It is too small, easily draw
Play core plugging.Airport should standby 2~3 kinds of sizes clamp spring for apolegamy, every two kinds of internal diameter is advisable with differing 0.3 millimeter.
Inner tube assembly can be placed in outer pipe assembly after inside and outside pipe assembly assembling and form a full set of cord coring drill, it is desirable that reached
It arrives：
It A, should be unblocked when inner tube assembly is put into from outer pipe assembly top.
B, when bullet card withstands bullet card fork (top connection) interior step, the gap between clip spring seat end face and drill bit is 3-4
Millimeter is advisable.That is, described top connection has step in one.
When the bullet card of inner tube assembly withstands the interior step of top connection, the gap between clip spring seat end face and drill bit is 3-4
Millimeter.
When C, carrying out examination fishing with the inner tube assembly in the external pipe assembly of fisher, it should be able to successfully pull out and.
All rock core pipe abrasions are more than wall thickness 1/3, are bent in every meter of length more than 0.75 millimeter.Various drilling tools have small split
Line, serious dent, screw thread abrasion or it is spacious moved notably, should all repair and change in time, must not be continuing with.
Forbid directly beaing basket with iron hammer during removal of core from inner tube.
The fisher is arranged in hole, and positioned at closing at aperture, fisher is electrically connected with control device, according to control
The instruction of device is vertically lowered along hole to hole bottom with the speed set, will be dragged for spearhead and is fixed on its head.
The necessary reliable in action of fisher, it is secured with steel cable bind.To avoid damaging steel wire rope when salvaging is hampered, should beat
Fishing device top reclosing is about one meter, and a diameter of 3 millimeters obtain safety rope.
Fishing spear will be installed straight, symmetrical, and flexibility and reliability has been answered in tail springs work, and head, which opens 5~10 millimeters, to be advisable.
The winch gear includes winch and a steel wire rope, and one end cigarette of steel wire rope is on the reel of winch, the other end
It is fixed on the afterbody of fisher.
The tensile strength of halite bed rock salt is 1.12Mpa, and the tensile strength of rock is 2.5~4.4Mpa, core diameter
Maximum 74mm, the other factors such as corer inner tube should not be considered, it is desirable that select mating winch in 200kg by breaking rock core pulling force
And rope hoisting ability is not in 500kg.
The winch gear is electrically connected with control device, to the instruction rotating drum according to control device, to apply one
Extraction force straight up makes the shaft centre line that fisher carries inner tube assembly along outer pipe assembly move and take off on fisher
From outer pipe assembly.
3rd drill bit uses PDC drill bit.
Being carved since wire line core drilling is annular takes area big than conventional core-drilling, bit pressure used also phase when creeping into
It should increase (PDC drill bit).
PDC drill bit wire line core drilling bit pressure recommendation table 3
Note：1kg≈10N.
It is actual to be passed through using bit pressure by specific rock stratum condition, bite type, drill bit actual size (such as oversize drill bit)
Practice rationally determines.To reduce hole deviation, bit pressure is reduced, wire line core drilling preferably selects the small brill of bottom labial surface contact area
The drill bit of head, such as more mouths of a river, staggeredly labial surface and tooth-shape structure, can be substantially reduced bit pressure required during drilling, beneficial to preventing hole
Tiltedly.
Rotating speed when being crept into as coring device in aperture, hole depth, rinses profit as conventional PCD core drilling
Under the conditions permits such as sliding condition, wall stability, rock stratum abrasiveness, drilling rod robustness and equipment, as far as possible higher rotation speed is taken to bore
Into.
Wire line core drilling is permitted appropriate to the occasion with Solid Free and low solid phase and added with the flushing liquor of lubricant in condition.When with mud
Starch it is appropriate to the occasion make raw material with tonerde, prevent in drilling rod tie mudcake phenomenon.The definite element of flushing fluid has two：1. retaining ring
Speed is backflowed on shape gap in the range of 0.45~1.0-1.5m/s；2. drill bit labial surface unit area (cm2) flushing fluid is kept to exist
3~5L/min.
(1) flushing liquor
In line with safety, high-quality, low consumption, the guiding theory for efficiently completing this well construction task, the mud of each well section of this well
Design is as follows：
1st, 0~250m, use do not disperse low solid phase fresh water mud, prepare base with high-quality bentonite and starch, with sodium carbonate, hydrolysis
Polyacrylamide (PHP), hydrolyzed polyacrylonitrile (HPAM) adjustment mud property.
This well section stratum is soft, and drillability is good, and wellbore stability, and mud, which focuses on, improves bottom-hole cleaning and carrying rock powder
Ability, prevent bit balling and mud cake bit freezing.
Its mud property is：
Proportion：1.08g/cm3 funnel viscosity：20~25s
Fluid loss：≤ 15ml/30min mudcake thicknesses：≤1mm
PH value：8~9 sand content：≤ 3%
2nd, 250m to 700m often creeps into 30~50m and adjusts a mud property, and mud in discharge part hole more renews slurry,
Make every effort to mud property index and reach optimum state.
Proportion：1.08~1.10g/cm3 funnel viscosities：20~25s
Fluid loss：<10ml/30min mudcake thicknesses：≤0.5mm
PH value：9~9.5 sand content：≤ 2%
3rd, saliferous strata well section mud type, performance and processing：
It bores and all discharges fresh water mud in hole when meeting saliferous strata, salt-water mud is replaced, with bittern, concave convex rod antisaline soil
Base slurry is prepared, SMC, SMP, FCLS, K31, Na-CMC, soda ash, caustic soda etc. is added to adjust mud property, by mud plus salt to saturation
State, i.e. chloride ion content reach 17~180,000 PPM, and to smoothly complete coring task, further saturated salt-water mud is carried out
Anti-collapse processing, it is ensured that in entire location of the coring procedure, without chip off-falling phenomenon in well.
Proportion：1.25~1.30g/cm3 funnel viscosities：30~25s
Fluid loss：8ml/30min mudcake thicknesses：≤0.5mm
PH value：9~10 sand content：≤ 2%
(2) flushing fluid
Flushing fluid parameter list
Table 4
The present invention also provides a kind of coring method for rock salt exploration engineering using foregoing coring system, including：
Step 1 is opened up using the first drilling tool and the second drilling tool in hole to salt deposit successively.
Step 2, decentralization coring device continue to creep into hole, until rock core fills inner tube.
Coring device is extracted to the 3rd drill bit and leaves hole bottom by step 3, blocks disconnected rock core, then by the 3rd drilling rod with taking
Hole is extracted after the separation of core device.
Into hole, fisher drops to hole bottom with the speed set for step 4, decentralization fisher, and spearhead is dragged in contact,
And fishing spearhead is fixed on its head.
Step 5 starts winch rotating drum, to apply an extraction force straight up on fisher, takes fisher
Shaft centre line with inner tube assembly along outer pipe assembly moves and departs from outer pipe assembly, until inner tube assembly rises to hole top
Portion.
Step 6, separation fisher and inner tube assembly, obtain rock core.
When creeping into rock core and filling inner tube (drilling depth be not allowed be more than inner tube length) soon or core plugging occurs, it should carry out immediately
Salvage rock core.
First by drilling tool lift-off bottom hole, block disconnected rock core, lift drilling rod on machine, and dismantled in joint；Drilling machine retreats, and screws on brill
Bar thread protector, transfers fisher, and fisher is declined in flushing liquor with the speed of 1.5-2 meter per seconds.Notice that fisher hooks fishing lance
The reaction of head.
Judge to salvage success or not, can refer to following method：First, " touching card " sound whether is heard from the drilling rod of aperture
Sound.It can be close to drilling machine vertical shaft or aperture drilling rod during hole depth by pipe wrench, screwdriver or iron rod, be listened carefully with ear；Second is that pull steel wire
Whether rope is more preceding than " touching card " energetically；Third, when above carrying fisher, see in the drilling rod of aperture whether gush mud.
When confirming that fisher crowfoot has hooked fishing lance, lifting of winch inner tube can be started.After salvaging successfully, preferably salvaging
It makes a sign on steel wire rope, so that next time salvages reference.
After inner tube pulls aperture out, crowfoot is dismantled, is slowly transferred.In order to avoid lower axle adjusts part bending.
When fish for inner tube it is invalid when, it is impossible to hard pier of making a dash should analyze reason, until carry brill processing, inner tube propose hole after, inspection
Look into core sampler situation.
In some instances, when inner tube is taken out it is interior in without rock core, it is necessary to which coring again, the present invention propose a kind of secondary coring
Method.
The secondary coring method further includes：
Step 1 provides a spare inner tube assembly.
Step 2 is put into spare inner tube assembly in the 3rd drilling rod by hole top, drilling rod on spare inner tube assembly and a machine
Connection.
Step 3, the spare inner tube assembly of turn on pump force feed to spare inner tube assembly enter inside the outer pipe assembly in hole, cleaning bottom of hole
Drilling is so that rock core fills the inner tube of spare inner tube assembly.
The step of subsequent step is with foregoing coring method is identical.
Airport must configure two sets or more inner tube assemblies.All inner tube assemblies, it is equal to clip spring seat end at the top of clamp from playing
Length must be kept consistent.Spare inner tube assembly, which should be placed on, to be not easy to be stepped on, is pressed ground place, and at bearing butter is added to lubricate.
When confirming in drill string without rock core, another set of spare inner tube is put by aperture in drilling rod, to drilling rod on upper machine, turn on pump
Force feed inner tube inner tube to be promoted to accelerate glide downwards, to avoid in taxiing procedures, is withstood by tool joint step part, can
Drilling tool is moved with heavy curtain of suitably driving.
When not having flushing liquor in drill string, it is not allowed to launch inner tube.At this moment aperture can be directed at drilling rod on machine, pumping is rinsed
Liquid launches rapidly inner tube after filling, if water can not be filled in hole uses dedicated dry hole dispenser.
When confirming that inner tube is accurately and reliably reached in outer tube, side accurate slowly cleaning bottom of hole and drilling, inner tube are not up to bottom hole
Before, mustn't cleaning bottom of hole drilling, in order to avoid rock core prematurely enters drill bit and withstands inner tube, be allowed to be located in less than on precalculated position, formation " is beaten
At this moment blank pipe " phenomenon, will distribute life to inner tube elastic fastening part and rapidly wear.Whether inner tube reaches bottom hole, can according to different hole depths,
Dip angle of hole and grope rule using flushing liquor property, sum up experience and provide the specific time again.
It fishes for when finding after rock core to be short of without rock core or rock core in inner tube, should judge reason.Confirm that rock core comes off boring
When in column, brill processing should be proposed immediately.
Once confirming that drilling rod has fractureed, inaccurate tripping in fisher carries out fishing for inner tube work.
The special multiconductor free pliers of unloading inner tube；Unloading clip spring seat removes son with dedicated clip spring seat.Unscrew inner tube
Either end (clip spring seat or inner pipe joint) gently taps inner tube to rock core is gone out, is not fiercelyed attack with iron hammer, in order to avoid generate pit drilling
When block rock core.It is cleaned after removal of core and checks inner tube assembly, be then reassembled with, be placed on the ground for being not easy to be pressed, stepped on
Just, in case lower round trip is used again.
With the experimental data comparing result of common coring process
Heavy caliber wire line coring is constructed, and each drilling depth is 2-4.8m or so, average each drilling depth 4.1m or so.Wire line coring
Compared with common coring construction technology, drilling efficiency improves 65%.
For example, by Jiangsu Province Feng County teacher Zhai mining areas salt mine exploration exemplified by, one of mine from 648.83m to
1011.76m use common coring process coring, the construction time amount to 988.7 it is small when, drilling depth 362.93m, the long 203.47m of core, altogether
Carry brill 38 times.If averagely boring effect by heavy caliber wire line coring as 0.51m/h, need 711.6 it is small when, can save 277.1 it is small when (close
11.5 my god).
So as to which, the present invention refers to a kind of for the coring device of rock salt exploration engineering and coring method, propose a kind of applicable
In the devices such as the heavy caliber wire line coring device of rock salt exploration engineering and mating winch, inner tube and core are extracted with winch so as to reach
To not putting forward the purpose that drills through core.
Although the present invention is disclosed above with preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (10)
1. a kind of coring system for rock salt exploration engineering, which is characterized in that the coring system includes drilling equipment, coring
Device, fisher, winch gear, control device；
The drilling equipment include to by hole explore to stablize the first drilling tool of rock stratum, exploring hole to salt deposit
The second drilling tool, the first drilling tool include sequentially connected first drill bit, the first drill collar, the first drilling rod and the first kelly bar, second
Drilling tool includes sequentially connected second drill bit, the second drill collar, the second drilling rod and the second kelly bar；
The coring device includes sequentially connected 3rd drill bit, corer, the 3rd drilling rod, third party's drilling rod；
The corer includes an outer pipe assembly and an inner tube assembly, and outer pipe assembly has a cavity in their extension direction, interior
Pipe assembly is mounted in cavity and can be moved along the shaft centre line direction of outer pipe assembly；
The outer pipe assembly includes sequentially connected top connection, bullet card room, stablizes connector, reamer and the 4th drill bit；
Said inner tube assembly includes sequentially connected fishing spearhead, bullet card, recovery tube, the adjusting of single action part, inner tube, square section, clamp spring
And clip spring seat；
The fisher is arranged in hole, and positioned at closing at aperture, fisher is electrically connected with control device, according to control device
Instruction be vertically lowered with the speed set along hole to hole bottom, spearhead will be dragged for and be fixed on its head；
The winch gear includes winch and a steel wire rope, and one end cigarette of steel wire rope on the reel of winch, fix by the other end
In the afterbody of fisher；
The winch gear is electrically connected with control device, vertical to apply one to the instruction rotating drum according to control device
Upward extraction force makes the shaft centre line that fisher carries inner tube assembly along outer pipe assembly move and depart from outer on fisher
Pipe assembly.
2. the coring system according to claim 1 for rock salt exploration engineering, which is characterized in that first drill bit
Diameter is more than the diameter of the second drill bit.
3. the coring system according to claim 1 for rock salt exploration engineering, which is characterized in that the top connection has
Step in one；
When the bullet card of inner tube assembly withstands the interior step of top connection, the gap between clip spring seat end face and drill bit is 3-4 millis
Rice.
4. the coring system according to claim 1 for rock salt exploration engineering, which is characterized in that the fisher top
It is connected with a safety rope.
5. the coring system according to claim 4 for rock salt exploration engineering, which is characterized in that the safety rope length
For 1 meter, it is 3 millimeters a diameter of.
6. the coring system according to claim 1 for rock salt exploration engineering, which is characterized in that the 3rd drill bit is adopted
Use PDC drill bit.
7. the coring system according to claim 1 for rock salt exploration engineering, which is characterized in that the 3rd drill bit is adopted
With the small drill bit of bottom labial surface contact area.
8. the coring system according to claim 7 for rock salt exploration engineering, which is characterized in that the 3rd drill bit is adopted
With any one in more mouth of a river drill bits, interlock labial surface drill bit, tooth-shape structure drill bit.
A kind of 9. coring method for rock salt exploration engineering using coring system described in claim 1, which is characterized in that bag
It includes：
It is opened up successively using the first drilling tool and the second drilling tool in hole to salt deposit；
Coring device is transferred into hole, continues to creep into, until rock core fills inner tube；
Coring device is extracted to the 3rd drill bit and leaves hole bottom, blocks disconnected rock core, then after the 3rd drilling rod is separated with corer
Extract hole；
Fisher is transferred into hole, fisher drops to hole bottom, contact fishing spearhead with the speed set, and will drag for lance
Head is fixed on its head；
Start winch rotating drum, to apply an extraction force straight up on fisher, fisher is made to carry inner tube assembly
It is moved along the shaft centre line of outer pipe assembly and departs from outer pipe assembly, until inner tube assembly is risen at the top of hole；
Fisher and inner tube assembly are separated, obtains rock core.
10. the coring method according to claim 9 for rock salt exploration engineering, which is characterized in that the method is also wrapped
It includes：
One spare inner tube assembly is provided；
Spare inner tube assembly is put by hole top in the 3rd drilling rod, spare inner tube assembly is connected with drilling rod on a machine；
The spare inner tube assembly of turn on pump force feed to spare inner tube assembly enters inside the outer pipe assembly in hole, and cleaning bottom of hole is crept into so that rock
The heart fills the inner tube of spare inner tube assembly.
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| CN201711463132.8A CN108104752B (en) | 2017-12-28 | 2017-12-28 | Coring device and coring method for rock salt exploration engineering |
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| CN116641695A (en) * | 2023-07-26 | 2023-08-25 | 金石钻探(唐山)股份有限公司 | Self-adaptive drilling tool and drilling process |
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| CN114033327B (en) * | 2021-10-12 | 2023-05-26 | 深圳大学 | Lifting rope type coring self-locking anchoring device |
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