CN105888549A - Kilometer-depth L-shaped ground pre-grouting drilling tool assembly applied to hole drilling and hole drilling process - Google Patents
Kilometer-depth L-shaped ground pre-grouting drilling tool assembly applied to hole drilling and hole drilling process Download PDFInfo
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Abstract
The invention discloses a kilometer-depth L-shaped ground pre-grouting drilling tool assembly applied to hole drilling, and a hole drilling process which is a kilometer-depth L-shaped ground pre-grouting hole drilling process. The kilometer-depth L-shaped ground pre-grouting hole-drilling drilling process comprises straight hole section drilling, whipstocking section drilling and horizontal section drilling, wherein the whipstocking section drilling comprises whipstocking section drilling of a deviation angle being equal to or larger than 45 degrees and whipstocking section drilling of a deviation angle being equal to or smaller than 45 degrees; during the whipstocking section drilling, on the premise that the build-up rate meets a design requirement, the drilling tool assembly is exchanged and composite drilling of 2m is performed after each drilling of the length of one single drill pipe is performed; when each drilling of the length of 2-3 drill pipe stands or pure drilling over 24 hours is performed, short trip of 10-15 drill pipe stands is completed. According to the kilometer-depth L-shaped ground pre-grouting drilling tool assembly applied to hole drilling and the hole drilling process, kilometer-depth shaft horizontal drift surrounding rock modified ground pre-grouting hole-drilling construction requirements are met, problems that stone dust up-hole resistance is large, trip difficulty is large, drill pipe sticking and hole collapse occur and the like when hole drilling is performed in a horizontal oriented section are solved, and fatigue failure to a drilling tool due to stress and strain under a drilling pipe rotation condition is reduced.
Description
Technical field
The present invention relates to mining machinery field, particularly to a kind of km deep L-type pre grouting from the surface
Boring BHA and bore process.
Background technology
Km deep-well entry country rock modified floor pre-pouring grout technology, refers to utilize high-precision
Drilling track controls technology, unstable to down-hole horizontal tunnel by the horizontal inlet well of deep-well,
It is modified that breaking surrounding rock carries out pre grouting from the surface, to strengthen roadway surrounding rock integrity, improves country rock power
Learn condition, improve relevant coal mine roadway and the country rock body stability in the large of chamber, reduce tunnel
Supporting difficulty, it is ensured that the safety that underground construction is movable.
Pre grouting from the surface construction technology is special, and probing and grouting with plunger replace coordinating operation, and it is special
Point: (1) inlet well uses and maintenance time length (some months even ten some months)；(2) hole
Footpath requires regular uniform (guaranteeing that stop grouting plug is starched smoothly up and down and only)；(3) broken charges only slurry is bored
And drilling tool and stop grouting plug time of repose length (several hours even tens hours) in hole；(4) boring
Inclination section and horizontal segment hole wall are rock open-hole, it is impossible to dispose sleeve pipe；(5) drilling target target territory
Little, orientation accuracy is high.
Deep-well coal measure strata complex lithology, often mixes layer for siltstone, packsand, mud rock and coal bed
Distribution, complex geologic conditions, the weak bad ground such as tomography, crushed zone is to inlet well especially
Be km deep level orientation inlet well construction bring extreme difficulties.Deep well grouting hole drill enters to execute
In work, drilling slurry leakage, retention of excessive fluid easily occur, gush sand, hole wall expands undergauge, hole wall table
Face is peeled off, and falls the various complex situations such as block, disintegrate, and because of gluing that complex geological condition causes
Attached bit freezing, sand setting bit freezing, the drilling accident such as necking down bit freezing, well slough bit freezing happens occasionally, above
The light then schedule delays of boring accidents, increase expense, heavy then injected hole is scrapped, and has a strong impact on engineering
Progress and safety.
Km deep-well entry country rock modified floor pre-pouring grout drilling construction compares general colliery
Constructing in deep well grouting hole, BHA is had requirements at the higher level, such as: (1) deflecting segment length, well
Tiltedly change big, orientation time length, required precision high, during to horizontal orientation section, rock dust
On return that resistance is big, the difficulty that makes a trip big, the accident occurrence frequency such as bit freezing, collapse hole, cutting bed is high,
Accident treatment difficulty is big, success rate is low；(2) L-type horizontal grouting hole is due to the mesh of grouting and reinforcing
Mark region (tunnel and span length and height are several meters of scopes) is less, and serosity to be considered
Dilation angle, the factor of reinforcing scope, the boring target territory error requirements of design is higher, it is desirable to bore
Hole accurately enters target territory, and bore direction is consistent with target territory axis.Simultaneously because in Zuan Kong also
Wanting frequent bottom stopper slurry to fill in row slip casting, Trajectory Design needs more smooth, and boring procedure controls difficulty
Spend higher；(3) in inlet well, drilling tool stress is complicated, and drilling track drift angle is big, and curvature is big,
Drilling rod by bigger frictional resistance, causes the difficulty that makes a trip, setting of casing difficulty, drill bit to add in hole
Pressure difficulty；Bending stress is relatively big, and the ess-strain under drilling rod rotating condition is by aggravation drilling tool
Fatigue rupture.
Summary of the invention
In view of this, a kind of km deep L-type boring brill of pre grouting from the surface of offer is provided
Tool combination and bore process, not only meet km deep well entry country rock modified floor and note in advance
Slurry drilling construction requirement, solving boring to returning that resistance is big on rock dust during horizontal orientation section, removing
Bore that difficulty is big and the problem such as bit freezing, collapse hole, and reduce the stress under drilling rod rotating condition
The strain fatigue rupture to drilling tool.
For solving the problems referred to above, the present invention adopts the following technical scheme that a kind of km deep L-type ground
Face pre-pouring grout bore process, creeps into including straight hole section, inclination section creeps into and creeps into horizontal segment, makes
Tiltedly section is crept into and is included that hole angle is more than the inclination section of 45 ° and creeps into and hole angle making less than 45 °
Tiltedly section is crept into；In inclination section drilling process, on the premise of build angle rate meets design requirement, often
Change drill set after creeping into 1 single drill pipe length and merge compound drilling 2m；Often creep into 2～3
Individual thribble drilling rod or pure creep into more than 24h, short trip 10～15 thribble drilling rod；At boring song
The rate Holes of Complicated Wells section more than or equal to 6 °/30m, often creeps into 50～100m, and short 3～10 is stood
Root drilling rod；After hole angle is more than 45 °, during trip-out, front 5～10 thribble drilling rods use unit head
Pulling out of hole, during lower brill, last 5～10 thribble drilling rods use and bore under unit heads；The pressure of the drill is 15～35kN,
Helicoid hydraulic motor drilling speed is 180～200r/min, pump amount: 615L/min.
Above-mentioned km deep L-type pre grouting from the surface bore process, in straight hole section drilling process, perforate
Time, rig low pressure slow-speed, huge discharge circulating mud；The pressure of the drill: 0.3～0.5t, helicoid hydraulic motor bores
Speed: 30～40r/min, pump amount: 990L/min.
Above-mentioned km deep L-type pre grouting from the surface bore process, in straight hole section drilling process, normally
When creeping into, the pressure of the drill is less than or equal to increasing the weight of the 2/3 of drilling tool weight, and often creeps into 4～5m and carry out
Cleaning bottom of hole；The pressure of the drill is 1.5～3.5t；Table soil, decomposed rock section, drilling speed is 70～80r/min；
Hard rock section, drilling speed is 50～60r/min pump amount: 990L/min.
Above-mentioned km deep L-type pre grouting from the surface bore process, in straight hole section drilling process, normally
When creeping into, often creeping into 9m, cleaning bottom of hole number of times is more than or equal to 2 times.
The km deep L-type ground used in above-mentioned km deep L-type pre grouting from the surface bore process is pre-
Inlet well BHA, in inclination section drilling process, when hole angle is less than 45 °, drilling tool
Combination includes that Φ 133mm rifler or PDC drill bit, Φ 105mm screw rod, Φ 105mm are without magnetic
Drill collar, Φ 105mm drill collar and Φ 73mm high-strength drill pipe, the lower end of described Φ 73mm drilling rod
Fix with the upper end of described Φ 105mm drill collar and be connected, the lower end of described Φ 105mm drill collar and institute
State the upper end of Φ 105mm non magnetic drill collar to connect by suspension joint is fixing, described Φ 105mm without
The lower end of magnetic drill collar is fixing with the upper end of described Φ 105mm screw rod to be connected, described Φ 105mm spiral shell
The lower end of bar is fixing with described Φ 133mm rifler or PDC drill bit to be connected；Hole angle is more than
When 45 °, BHA include Φ 133mm rifler or PDC drill bit, Φ 105mm screw rod,
Φ 105mm non magnetic drill collar and Φ 73mm high-strength drill pipe, under described Φ 73mm drilling rod (5)
The upper end with described Φ 105mm non magnetic drill collar is held to be connected by suspension joint is fixing, described
The lower end of Φ 105mm non magnetic drill collar is fixing with the upper end of described Φ 105mm screw rod to be connected, described
The lower end of Φ 105mm screw rod is fixing with described Φ 133mm rifler or PDC drill bit to be connected.
The above-mentioned km deep L-type boring BHA of pre grouting from the surface, in inclination section drilling process,
Creeping into stratum when being bad ground, BHA includes Φ 133mm tricone bit, Φ 105mm
Single bend PDM, Φ 105mm non magnetic drill collar, 10～13 thribble Φ 73mm high-strength drill pipes, 1 single
Root Φ 105mm drill collar, 1 single Φ 73mm high-strength drill pipe, 1 single Φ 105mm drill collar and
Φ 73mm high-strength drill pipe.
The above-mentioned km deep L-type boring BHA of pre grouting from the surface, in straight hole section drilling process,
BHA includes perforate drilling tool and normally creeps into BHA, and described perforate drilling tool includes Ф
215.9mm rifler, Ф 159mm drill collar and Ф 73mm short drill pipe, described normally creep into brill
Tool combination includes that Ф 215.9mm rifler, 2～4 Ф 159mm drill collars, Ф 89mm are high-strength
Degree drilling rod and Ф 73mm high-strength drill pipe.
The above-mentioned km deep L-type boring BHA of pre grouting from the surface, in straight hole section drilling process,
Well straightening BHA includes Φ 215.9mm drill bit, 1.25 ° or 1.5 ° of 5LZ146 screw rods, Φ
89mm drilling rod and Φ 73mm drilling rod.
The above-mentioned km deep L-type boring BHA of pre grouting from the surface, in horizontal segment drilling process,
BHA include Φ 133mm PDC drill bit, Φ 105mm screw rod, Φ 105mm non magnetic drill collar and
Φ 73mm high-strength drill pipe.
The above-mentioned km deep L-type boring BHA of pre grouting from the surface, described Φ 105mm screw rod
It is 1.25 ° or 1.5 ° of single bend PDMs.
The invention has the beneficial effects as follows:
1. the present invention not only increases the construction quality of L-type inlet well, and also a saving work
Journey construction cost, creates good economic results in society.
2. the L-type inlet well drill bit in the present invention selects tricone bit and PDC drill bit, bores
Entering efficiency to double, the cost of single drill bit reduces by 80%.
3. structure of downhole assembly is optimized by the present invention, 4 drill collars be reduced to 2 drill collars,
Preferably meet the technology requirement of helicoid hydraulic motor directional drilling.
4. in the present invention, the directional drilling mode of L-type boring uses compound drilling, breaking drill bit
Rock rotating speed falls below below 20r/min, it is achieved that high efficiency smooth creeps into.
5. the present invention not only reduces the formation of cutting bed, it is ensured that drilling track is round and smooth.
Accompanying drawing explanation
Fig. 1 is the km of the present invention deep L-type boring BHA of pre grouting from the surface and bore process
The package assembly schematic diagram of DHA when middle hole angle is more than 45 °；
Fig. 2 is the km of the present invention deep L-type boring BHA of pre grouting from the surface and bore process
The package assembly schematic diagram of down-hole equipment when middle hole angle is less than 45 °.
In figure: 1-Φ 133mm rifler or PDC drill bit；2-Φ 105mm screw rod；
3-Φ 105mm non magnetic drill collar；4-suspension joint；5-Φ 73mm high-strength drill pipe；6-Φ105mm
Drill collar.
Detailed description of the invention
For understanding the scheme in the explanation present invention, preferred embodiment is given below and combines accompanying drawing
Describe in detail.
The engineering of underworkings is reinforced with L-type hole, Xin Hu colliery, Woyang County, Anhui Province pre grouting from the surface
As a example by.
In the present embodiment, hole 3606m altogether, wherein inclination section 1806m altogether, horizontal segment 600m altogether.
Wherein:
(1) straight hole section is crept into
When perforate is crept into, the BHA of employing includes Ф 215.9mm rifler, Ф 159mm
Drill collar and Ф 73mm short drill pipe；Drilling parameter is: the pressure of the drill 0.3～0.5t；Drilling speed: 30～
40r/min；Pump amount: 990L/min；Rig low pressure slow-speed during perforate, huge discharge circulating mud,
Ensure the perpendicularity of boring perforate.
When normally creeping into, the BHA of employing includes Ф 215.9mm rifler, Ф 159mm
Drill collar (2～4), Ф 89mm high-strength drill pipe and Ф 73mm high-strength drill pipe；Creep into ginseng
Number is: the pressure of the drill 1.5～3.5t；Table soil, decomposed rock section, drilling speed is 70～80r/min, firmly
Rock section, drilling speed is 50～60r/min；Pump amount is 990L/min.
During well straightening, the BHA of employing includes Φ 215.9mm drill bit, 1.25 ° or 1.5 °
5LZ146 screw rod, Φ 89mm drilling rod and Φ 73mm drilling rod.
(2) inclination section creeps into
Inclination section includes that hole angle is less than inclination section and the hole angle deflecting more than 45 ° of 45 °
Section, wherein:
I (), when hole angle is less than 45 °, the BHA of employing includes Φ 133mm gear wheel
Drill bit or PDC drill bit 1, Φ 105mm screw rod 2, Φ 105mm non magnetic drill collar 3, Φ 105mm
Drill collar 6 and Φ 73mm high-strength drill pipe 5, as in figure 2 it is shown, described Φ 73mm drilling rod 5
Lower end is fixing with the upper end of described Φ 105mm drill collar 6 to be connected, described Φ 105mm drill collar 6
Lower end is connected by suspension joint 4 is fixing with the upper end of described Φ 105mm non magnetic drill collar 3, institute
The upper end of the lower end and described Φ 105mm screw rod 2 of stating Φ 105mm non magnetic drill collar 3 is fixed and is connected,
The lower end of described Φ 105mm screw rod 2 is solid with described Φ 133mm rifler or PDC drill bit 1
Fixed connection；Wherein, described Φ 105mm screw rod 2 is 1.25 ° or 1.5 ° of single bend PDMs.
In the hole angle inclination section drilling process less than 45 °, 1.25 ° of screw rods and 1.5 ° of spiral shells
Bar continuous deflecting angle maximum is respectively up to 17.2 °/30m and 20.64 °/30m；With big bent angle
Screw rod compare, Curvature varying will not be too fast, it is to avoid because excessive deflecting causes precision deficiency feelings
The generation of condition, is designed as the requirement of 4.5 °/30m simultaneously when can also fully meet directional drilling,
And during compound drilling, the change of low-angle single bend PDM boring aperture is relatively small, as
When Φ 133mm rifler or PDC drill bit 1 compound drilling, aperture is 150mm, easily realizes note
The technique that during slurry, stop grouting plug is transferred, injected hole varying aperture is little simultaneously, and drilling track is the most smooth,
Will not form step in big hole, in lifting and decentralization process, resistance is also the least.And make
During with this BHA, the pressure of the drill to control in the range of 15～35kN, and the stream of circulating mud pump
Amount controls to 615L/min, and the drilling speed of described mud motor combination controls 180～
200r/min.And on the premise of build angle rate meets design requirement, often creep into 1 single replacing
BHA and compound drilling about 2m, to reduce the formation of cutting bed, and often creep into 2～
3 thribble drilling rods or rotating hours, more than 24h, need short trip 10～15 thribble drilling rod；
In the boring curvature Holes of Complicated Wells section more than or equal to 6 °/30m, often creep into 50～100m, need
Short trip 3～10 thribble drilling rod, to ensure that drilling track is round and smooth.
(ii) when hole angle is more than 45 °, the BHA of employing includes Φ 133mm gear wheel
Drill bit or PDC drill bit 1, Φ 105mm screw rod 2, Φ 105mm non magnetic drill collar 3 and Φ 73mm
High-strength drill pipe 5, as it is shown in figure 1, the lower end of described Φ 73mm drilling rod 5 and described Φ 105mm
The upper end of non magnetic drill collar 3 connects by suspension joint 4 is fixing, described Φ 105mm non magnetic drill collar
The lower end of 3 is fixing with the upper end of described Φ 105mm screw rod 2 to be connected, described Φ 105mm screw rod 2
Lower end and described Φ 133mm rifler or PDC drill bit 1 is fixing is connected；Wherein, described
Φ 105mm screw rod 2 is 1.25 ° or 1.5 ° of single bend PDMs.
For creeping into of the hole angle inclination section more than 45 °, during trip-out, front 5～10 thribbles are adopted
Pulling out of hole with unit head, during lower brill, last 5～10 thribbles use and bore under unit heads, i.e. limit circulation
Mud limit makes a trip.
(iii) stratum, L-type pre grouting from the surface drilling kick-off section place deep for km is intricately
During layer, BHA includes Φ 133mm tricone bit, Φ 105mm single bend PDM, Φ 105mm
Non magnetic drill collar, 10～13 thribble Φ 73mm high-strength drill pipes, 1 single Φ 105mm drill collar, 1
Single Φ 73mm high-strength drill pipe, 1 single Φ 105mm drill collar and Φ 73mm high-strength drill pipe.
In hole angle is more than the inclination section drilling process of 45 ° and pre-on km deep L-type ground
When stratum, inlet well inclination section place is bad ground, drilling parameter and hole angle are less than 45 °
Inclination section identical when creeping into.
(3) horizontal segment creeps into
Horizontal grouting reinforces section, i.e. horizontal segment, is the mesh of km deep L-type pre grouting from the surface boring
Section, boring requirement is: horizontal drilling is straight and without bending section, diameter is more than or equal to
Φ118mm.Horizontal segment creeps into the mode using slipping drilling, convenient for correction, uses straight screw rod
Or low-angle screw rod creeps into (1.25 ° or 1 °), drill pressure is drilling tool deadweight.
The limited efficacy increasing the pressure of the drill played due to drill collar in horizontal segment work progress, instead
And due to drilling rod rigidity compared with strong, weight big, easily increases hole wall frictional force in slipping drilling, no
It is beneficial to discharge landwaste, the BHA therefore used in horizontal segment drilling process removes drill collar.
When horizontal segment creeps into, the BHA of employing includes Φ 133mm PDC drill bit, Φ 105mm
Screw rod, Φ 105mm non magnetic drill collar and Φ 73mm high-strength drill pipe.Through overtesting, do not increasing
The situation of other drilling tool, uses this drill set in km deep L-type pre grouting from the surface drilling horizontal section
Closing, during compound drilling, rate of penetration is up to 2.7m/h.
The engineering that L-type hole, Xin Hu colliery, Woyang County, Anhui Province pre grouting from the surface reinforces underworkings is suitable
Profit completes, and smoothly completes the mortar depositing construction in boring, and at directional inclination section Gao Kebao
The rate of penetration of card 50m/d, and the fastest up to 30m/d in horizontal segment continuously-directional rate of penetration.
The present invention passes through BHA reasonable disposition and the scientific application of bore process, improves thousand
The construction quality of rice deep L-type pre grouting from the surface boring, has saved Construction Cost, has created
Good economic results in society.And by L-type inlet well drill bit by initial single-cone rotary drill bit
Develop into tricone bit, then to PDC drill bit, drilling efficiency doubles, single drill bit
Cost reduces by 80%, and the continuing to optimize of structure of downhole assembly, 4 drill collars be reduced to 2
Root drill collar, preferably meets the technology requirement of helicoid hydraulic motor directional drilling.
Above-described embodiment is only for clearly demonstrating the invention example, and not
Restriction to the invention detailed description of the invention.Those of ordinary skill in the field are come
Say, can also make other changes in different forms on the basis of the above description.This
In without also cannot all of embodiment be given exhaustive.All in the spirit and principles in the present invention
Within any obvious change extended out or variation want still in the invention right
Among the protection domain asked.
Claims (10)
1. a km deep L-type pre grouting from the surface bore process, creeps into including straight hole section, deflecting
Section is crept into and is crept into horizontal segment, it is characterised in that inclination section creeps into and includes that hole angle is more than 45 °
Inclination section creep into and creep into less than the inclination section of 45 ° with hole angle；In inclination section drilling process,
On the premise of build angle rate meets design requirement, change after often creeping into 1 single drill pipe length and bore
Tool combination compound drilling 2m；Often creep into 2～3 thribble drilling rods or pure creep into more than 24h, short
Make a trip 10～15 thribble drilling rods；In the boring curvature Holes of Complicated Wells section more than or equal to 6 °/30m,
Often creep into 50～100m, short 3～10 thribble drilling rods；After hole angle is more than 45 °, during trip-out,
Front 5～10 thribble drilling rods use unit head to pull out of hole, and during lower brill, last 5～10 thribble drilling rods are adopted
Bore with under unit head；The pressure of the drill is 15～35kN, and helicoid hydraulic motor drilling speed is 180～200r/min,
Pump amount: 615L/min.
Km the most according to claim 1 deep L-type pre grouting from the surface bore process, it is special
Levy and be, in straight hole section drilling process, during perforate, rig low pressure slow-speed, huge discharge circulation mud
Slurry；The pressure of the drill: 0.3～0.5t, helicoid hydraulic motor drilling speed: 30～40r/min, pump amount: 990L/min.
Km the most according to claim 2 deep L-type pre grouting from the surface bore process, it is special
Levying and be, in straight hole section drilling process, when normally creeping into, the pressure of the drill is less than or equal to increasing the weight of drilling tool
The 2/3 of weight, and often creep into 4～5m and carry out a cleaning bottom of hole；The pressure of the drill is 1.5～3.5t；Table soil,
Decomposed rock section, drilling speed is 70～80r/min；Hard rock section, drilling speed is 50～60r/min pump amounts:
990L/min。
Km the most according to claim 3 deep L-type pre grouting from the surface bore process, it is special
Levying and be, in straight hole section drilling process, when normally creeping into, often creep into 9m, cleaning bottom of hole number of times is more than
Or equal to 2 times.
5. in the arbitrary described km deep L-type pre grouting from the surface bore process of Claims 1 to 4
The km deep L-type boring BHA of pre grouting from the surface used, it is characterised in that inclination section
In drilling process, hole angle less than 45 ° time, BHA include Φ 133mm rifler or
PDC drill bit (1), Φ 105mm screw rod (2), Φ 105mm non magnetic drill collar (3), Φ 105mm
Drill collar (6) and Φ 73mm high-strength drill pipe (5), the lower end of described Φ 73mm drilling rod (5)
Fix with the upper end of described Φ 105mm drill collar (6) and be connected, described Φ 105mm drill collar (6)
The upper end of lower end and described Φ 105mm non magnetic drill collar (3) fixed by suspension joint (4)
Connect, the lower end of described Φ 105mm non magnetic drill collar (3) and described Φ 105mm screw rod (2)
Upper end fixing connect, the lower end of described Φ 105mm screw rod (2) and described Φ 133mm gear wheel
Drill bit or the fixing connection of PDC drill bit (1)；When hole angle is more than 45 °, BHA includes
Φ 133mm rifler or PDC drill bit (1), Φ 105mm screw rod (2), Φ 105mm are without magnetic
Drill collar (3) and Φ 73mm high-strength drill pipe (5), the lower end of described Φ 73mm drilling rod (5)
It is connected by suspension joint (4) is fixing with the upper end of described Φ 105mm non magnetic drill collar (3),
The lower end of described Φ 105mm non magnetic drill collar (3) and the upper end of described Φ 105mm screw rod (2)
Fixing connect, the lower end of described Φ 105mm screw rod (2) and described Φ 133mm rifler or
PDC drill bit (1) is fixing to be connected.
The km the most according to claim 5 deep L-type boring drill set of pre grouting from the surface
Close, it is characterised in that in inclination section drilling process, creep into stratum when being bad ground, drilling tool
Combination include Φ 133mm tricone bit, Φ 105mm single bend PDM, Φ 105mm non magnetic drill collar,
10～13 thribble Φ 73mm high-strength drill pipes, 1 single Φ 105mm drill collar, 1 single Φ 73mm
High-strength drill pipe, 1 single Φ 105mm drill collar and Φ 73mm high-strength drill pipe.
The km the most according to claim 6 deep L-type boring drill set of pre grouting from the surface
Closing, it is characterised in that in straight hole section drilling process, BHA includes that perforate drilling tool is with normal
Creeping into BHA, described perforate drilling tool includes Ф 215.9mm rifler, Ф 159mm drill collar
With Ф 73mm short drill pipe, described normally creep into BHA include Ф 215.9mm rifler,
2～4 Ф 159mm drill collars, Ф 89mm high-strength drill pipe and Ф 73mm high-strength drill pipe.
The km the most according to claim 7 deep L-type boring drill set of pre grouting from the surface
Close, it is characterised in that in straight hole section drilling process, well straightening BHA includes Φ 215.9mm
Drill bit, 1.25 ° or 1.5 ° of 5LZ146 screw rods, Φ 89mm drilling rod and Φ 73mm drilling rod.
The km the most according to claim 8 deep L-type boring drill set of pre grouting from the surface
Close, it is characterised in that in horizontal segment drilling process, BHA includes Φ 133mm PDC
Drill bit, Φ 105mm screw rod, Φ 105mm non magnetic drill collar and Φ 73mm high-strength drill pipe.
10. boring according to the arbitrary described km deep L-type pre grouting from the surface of claim 5～9
BHA, it is characterised in that described Φ 105mm screw rod (2) is 1.25 ° or 1.5 ° of lists
Skew-swept airfoil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510367691.3A CN105888549B (en) | 2015-06-26 | 2015-06-26 | A kind of boring BHA of km depth L-type pre grouting from the surface and bore process |
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|---|---|---|---|
| CN201510367691.3A CN105888549B (en) | 2015-06-26 | 2015-06-26 | A kind of boring BHA of km depth L-type pre grouting from the surface and bore process |
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| CN105888549A true CN105888549A (en) | 2016-08-24 |
| CN105888549B CN105888549B (en) | 2018-01-19 |
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| CN108798515A (en) * | 2017-05-04 | 2018-11-13 | 中国石油天然气股份有限公司 | A kind of directed drilling technique for mud stone section |
| CN110410009A (en) * | 2019-08-10 | 2019-11-05 | 德威土行孙工程机械（北京）有限公司 | A kind of double output shaft no-dig directional driller power device and matching used drilling rod |
| CN110685627A (en) * | 2019-11-07 | 2020-01-14 | 淮南矿业(集团)有限责任公司 | Large-diameter drilling coring device and method |
| CN110984857A (en) * | 2019-01-08 | 2020-04-10 | 青岛地质工程勘察院 | Grouting reinforcement drilling device capable of being adjusted in two directions |
| CN112729796A (en) * | 2020-12-24 | 2021-04-30 | 中国石油大学(北京) | PDC drill bit build-up rate influence factor testing system and testing method thereof |
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| CN112729796B (en) * | 2020-12-24 | 2021-11-09 | 中国石油大学(北京) | PDC drill bit build-up rate influence factor testing system and testing method thereof |
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