CN205047180U - Rope coring and weighting pipe hole bottom pressurization combined drilling tool - Google Patents
Rope coring and weighting pipe hole bottom pressurization combined drilling tool Download PDFInfo
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- CN205047180U CN205047180U CN201520824660.1U CN201520824660U CN205047180U CN 205047180 U CN205047180 U CN 205047180U CN 201520824660 U CN201520824660 U CN 201520824660U CN 205047180 U CN205047180 U CN 205047180U
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Abstract
The utility model discloses a rope coring weighted tube hole bottom pressurization combined drilling tool, which comprises an outer tube assembly, an inner tube assembly and a weighted tube combined drilling tool, wherein the outer tube assembly comprises an outer tube, an upper reamer and a lower reamer which are connected with the upper end and the lower end of the outer tube, the upper end of the upper reamer is connected with an outer tube short circuit, and the lower end of the lower reamer is connected with a drill bit; the inner pipe assembly consists of an inner pipe, a clamp spring seat connected to the lower end of the inner pipe and an inner pipe single-action rock core salvaging device connected to the upper end of the inner pipe, wherein a clamp spring is arranged in the clamp spring seat; the combined drilling tool for the weighted pipe comprises a plurality of weighted pipes and a plurality of centralizers, wherein the weighted pipes are connected to the outer pipe short joint, the weighted pipes and the centralizers are arranged alternately, the centralizers on the weighted pipes are connected with a transition weighted pipe, and a conventional rope coring drill rod is connected to the centralizers at the upper end of the transition weighted pipe. The utility model discloses realize the drilling in-process to aggravate the pipe dead weight and regard as a special rope core drilling assembly of hole bottom loading (pressurization) mode.
Description
Technical field:
The utility model relates to a kind of wire line coring and increases the weight of to pressurize at the bottom of pore way-type drilling unit, can be used for, in larger diameter geological core drilling engineering, also can be used for the wire line coring drilling method in all kinds of core drilling such as oil, gas drilling core drilling.
Background technology:
Traditional geological core drilling, the wire line core drilling method adopted, its drilling tool is generally designed to the drilling tool of thin-walled form, and drill rod boring tool wall thickness is 5 ~ 7mm, drilling rod external diameter differs 6 ~ 8mm with outside diameter, be characterized in whole drill rod boring tool combination be same footpath on earth, owing to needing to salvage interior pipe rock core in drilling rod, drilling rod internal diameter is larger, boring annular gap is little, during rock drilling, the main earth's surface rig that leans on applies drilling rod and regulates pressure, is passed to hole subdrilling head G and gets rock.Its shortcoming is: one, and in drilling process, during shallow bore hole, drill bit place pressure applies pressure to whole drill string by earth's surface rig, by rig, drilling rod is pressurizeed, must drill swaying be caused, increase with drill hole wall frictional resistance in drilling rod revolution, drill rod abrasion aggravates, and drilling rod easily fractures; They are two years old, in drilling process, time deep drilling (super more than the 1000m degree of depth), drill string weight exceedes pressure needed for drill bit, also be regulate by rig earth's surface, due to the friction of drilling rod and hole wall, be difficult to the true pressure judging hole subdrilling head, drilling rod also can produce bending and wearing and tearing in pressurized segment in addition; Its three, in drilling process, due to earth's surface rig pressurization, less stable in drill string revolution, have a certain impact to boring hole deviation, drilling assembly is a footpath formula in addition, hole wall gap is corresponding less, deep drilling flushing liquor returns resistance comparatively large, affects wall stability and drilling effect.Therefore, there is many deficiencies in above-mentioned traditional cord coring drill combining structure in larger caliber probing.
Summary of the invention:
For overcoming the defect of prior art; the purpose of this utility model is to provide a kind of wire line coring to increase the weight of to pressurize at the bottom of pore way-type drilling unit; it has deadweight pressurization at the bottom of hole; reduce drilling rod to fracture accident; control hole deviation; flushing liquor drag losses in annular gap between reduction solid boring bar and hole wall, the features such as protection hole wall.
The utility model technical solution problem adopts following technical scheme:
Wire line coring increases the weight of to pressurize at the bottom of pore way-type drilling unit, comprise outer pipe assembly, inner tube assembly, weighting tube way-type drilling unit, described outer pipe assembly comprises outer tube, is connected to the upper reamer at the upper and lower two ends of described outer tube, the upper end of UR device, described upper reamer is connected with outer tube short circuit, and the lower end of described UR device is connected with drill bit; Described inner tube assembly by interior pipe, be connected to described interior pipe lower end clip spring seat, be connected to pipe single action rock core fishing device in interior pipe upper end and form, in described clip spring seat, be provided with jump ring; Described weighting tube way-type drilling unit comprises and is connected to many weighting tubes on described outer tube short circuit and many centralizers, and described weighting tube and centralizer are in being arranged alternately, on weighting tube, centralizer connects a transition weighting tube, and conventional rope coring drill pipe is connected on transition weighting tube centralizer.
What the lower end being in centralizer topmost connected is transition weighting tube, and described transition weighting tube external diameter is less than the external diameter of weighting tube and is greater than the external diameter 1 ~ 2 grade of conventional rope coring drill pipe, and every grade differential is 10 ~ 15mm.
The diameter of described drill bit 10 ~ 12mm larger than the diameter of described outer tube and weighting tube, the length of single described weighting tube is 9m; Described reamer external diameter and the same footpath of described outside diameter, described centralizer external diameter 1 ~ 2mm less of described outside diameter.
The length of described transition weighting tube is 6 ~ 9m, the tower combination of major diameter weighting tube and the differential transition of the conventional rope coring drill pipe external diameter of minor diameter is formed between transition weighting tube, centralizer between transition weighting tube and conventional rope coring drill pipe and conventional rope coring drill pipe three, this centralizer place creeps in operation process, and conventional rope coring drill pipe post upwards bears the two power points of neutralization that pulling force and weighting tube Gravitative Loads pressurize at the bottom of hole.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
The utility model overcomes conventional cord coring drill, creeping in turning course, drill bit place pressure applies pressure by earth's surface rig to drilling rod and is passed to drill bit position, cause drill swaying in hole, increase with drill hole wall frictional resistance, drill string wearing and tearing aggravation, Life of drill rod is short, and frangibility, simultaneously because rotary stability in drilling rod post holes is poor, easily cause the shortcomings such as boring hole deviation.The utility model devises and increases the weight of to pressurize at the bottom of pore way-type drilling unit structure, and its advantage is: on the basis not changing conventional cord coring drill basic function, has set up weighting tube way-type drilling unit at the bottom of hole, changes stress during drilling tool work.Adopt and increase drill bit, reamer and outer pipe assembly external diameter (mainly increase outer tube and weighting tube wall thickness, to increase drilling tool weight), top connects weighting tube and centralizer, utilizes the above weighting tube way-type drilling unit of hole subdrilling tool, realizes the object of pressurization at the bottom of hole.Because pressurization at the bottom of hole is crept into, decrease drill pipe buckling and drill rod abrasion in hole and to fracture accident, meanwhile, reduce the vibration of drilling tool in drilling process and swing, strengthen the stability of drilling tool, reduce drilling hole slope; Increase the weight of way-type drilling unit and conventional rope coring drill pipe column combination, because diameter is differential comparatively large, top rod increases with boring annular gap, during deep well drilling, flushing liquor returns resistance little, is conducive to the protection of hole wall and improves drilling efficiency.
The utility model, except being used for larger caliber geological core drilling, also can be used for oil, natural gas, underground novel energy, water resource exploration and all kinds of core drilling engineering.
Accompanying drawing illustrates:
Figure 1A, 1B are the utility model structure chart (due to space of a whole page arrangement needs, Figure 1A, 1B essence is an entirety, and the left end of Figure 1B is connected with Figure 1A right-hand member); Fig. 2 is that (P-is suspension force upwards for the utility model action principle figure; Q-weighting tube is from gravity; W-drill hole wall).
Number in the figure: 1-drill bit; 2-UR device; 3-outer tube; The upper reamer of 4-; 5-outer tube pipe nipple; 6-clip spring seat; 7-jump ring; Pipe in 8-; Pipe single action rock core fishing device in 9-; 10-first weighting tube; 11-first centralizer; 12-second weighting tube; 13-second centralizer; 14-transition weighting tube; 15-transition weighting tube centralizer; The conventional rope coring drill pipe of 16-.
Below by way of detailed description of the invention, and the utility model is described in further detail by reference to the accompanying drawings.
Detailed description of the invention:
Embodiment: see Fig. 1 (way-type drilling unit Standard figure), the present embodiment way-type drilling unit comprises outer pipe assembly, inner tube assembly and weighting tube way-type drilling unit.
Outer pipe assembly: comprise outer tube 3, be connected to the upper reamer 4 at the upper and lower two ends of outer tube, the upper end of UR device 2, upper reamer 4 is connected with outer tube short circuit 5, the lower end of UR device 2 connects drill bit 1; Outer pipe assembly mainly transmits coring axial compression, rotary drilling and the effect of finishing hole wall, and inner tube assembly is placed in its pipe.
Inner tube assembly: by interior pipe 8, be connected to interior pipe lower end clip spring seat 6, be connected to pipe single action rock core fishing device 9 in interior pipe upper end and form, mainly in drilling process, rock core enters in interior pipe, rock core fill after by clip spring seat, jump ring card coring, on carry drilling tool rock core pulled off, in drilling rod, transfer rope salvaging device from aperture again, inner tube assembly is salvaged on hole together with rock core.After inner tube assembly is dropped in outer pipe assembly again, another circulation core-drilling can be carried out.Because these mechanisms are this area routine techniques means, it is not the feature technology of the utility model way-type drilling unit, therefore do not repeat at this, the structure of this kind of drilling tool and drilling method are all documented in similar document such as such as CN102418488A, CN203412537U etc.
Weighting tube way-type drilling unit: by the first weighting tube 10, first centralizer 11, second weighting tube 12, second centralizer 13 (note: weighting tube can need to connect some according to drill pressure at the bottom of hole, every root is about 9m, centralizer is connected between weighting tube), transition weighting tube 14 (note: Design of length is 6 ~ 9m, external diameter is less than the second weighting tube 12, be greater than conventional rope coring drill pipe 16, external diameter is differential is 10 ~ 15mm), the parts such as transition weighting tube centralizer 15, conventional rope coring drill pipe 16 composition.Described weighting tube and centralizer refer in being arranged alternately, the first weighting tube 10, first centralizer 11, second weighting tube 12 is connected successively at outer tube short circuit, second centralizer 13 (being also centralizer on weighting tube), on weighting tube, centralizer connects transition weighting tube 14, transition weighting tube upper end connects transition weighting tube centralizer 15, and conventional rope coring drill pipe (16) is connected on transition weighting tube centralizer 15.Some weighting tubes, centralizers are connected to outer pipe assembly top, play by loading (pressurization) effect at the bottom of repeated hole; Mainly by the deadweight of weighting tube way-type drilling unit, drilling pressure is applied to hole subdrilling head, each centralizer plays vibration damping stabilization in drilling tool turning course, transition weighting tube plays the Stress decomposition of particle size drilling tool and drilling rod junction, thin footpath, to gain in strength and stability action.
In embody rule, transition weighting tube external diameter is less than the external diameter of weighting tube and is greater than the external diameter 1 ~ 2 grade of conventional rope coring drill pipe 16, and every grade differential is 10 ~ 15mm.To reduce the stress of particle size and drilling tool junction, thin footpath, to increase transition junction drilling tool intensity, junction drilling tool is avoided to fracture.
In embody rule, according to every root weighting tube weight and creep into required pressure configuration weighting tube total length and radical, weighting tube outside dimension (increasing 25 ~ 30mm), transition weighting tube 14 outside dimension (increasing 10 ~ 15mm), to increase deadweight and the rigidity of hole subdrilling tool, realize the object of hole subdrilling tool deadweight pressurization, improve the stress condition of the conventional rope coring drill pipe 16 in top, reduce drilling rod in drilling process mesopore and to fracture accident.The diameter of drill bit 1 10 ~ 12mm larger than the diameter of outer tube and weighting tube, the length of single weighting tube is 9m; Reamer external diameter and the same footpath of described outside diameter, centralizer external diameter 1 ~ 2mm less of outside diameter.The length of transition weighting tube 14 is 6 ~ 9m, transition weighting tube 14, between transition weighting tube centralizer 15 and conventional rope coring drill pipe 16 three, form the tower combination of the differential transition of the conventional rope coring drill pipe external diameter of major diameter weighting tube and minor diameter, this centralizer place creeps in operation process, and conventional rope coring drill pipe post upwards bears the two power points of neutralization that pulling force and weighting tube Gravitative Loads pressurize at the bottom of hole.To increase bonding strength and the stability of intermediate zone, decompose point of neutralization stress, reduce centrifugal pendulum power herein in rotary drilling, thus change drill string force-bearing situation herein, avoid junction drilling rod and joint to fracture accident.
In concrete enforcement, during drilling tool assembling, will assemble by drilling tool assembling drawing, assembly program is first outside and then inside, and get on, get off (from drill bit place).After outer pipe assembly installs, then placed wherein by inner tube assembly, and whether automatic clamping is in outer pipe assembly to check inner tube assembly, whether interior pipe single action performance is sensitive, and then connects weighting tube way-type drilling unit and drilling rod.
The utility model action principle: by the wall thickness of the cord coring drill outer tube 5 ~ 7mm of routine, be designed in the constant situation of internal diameter, just increasing outer tube external diameter makes wall thickness increase to the weighting tube of 18 ~ 20mm, be placed in outer some, pipe assembly top (its length depending on rock drilling needed for pressure), connect conventional thin-walled rope coring drill pipe again, thus realize in drilling process, at the bottom of hole, the special wire line coring way-type drilling unit of one of (pressurization) mode is loaded using weighting tube deadweight.When creeping into, do not need earth's surface rig to apply pressure to drilling rod and be passed to drill bit, G gets rock.The thin-walled rope coring drill pipe that weighting tube top connects only bears suspension force, is in extended state, to reduce the bending of drilling rod and to fracture.Arrange between bottom drill tool and weighting tube and ensure drilling tool cornering stability with drill bit with the centralizer in footpath.Meanwhile, this way-type drilling unit has well holes anti-oblique and increases drilling rod and hole wall annular gap, reduces effect flushing liquor returning resistance.Action principle as shown in Figure 2.
Claims (4)
1. wire line coring increases the weight of to pressurize at the bottom of pore way-type drilling unit, comprise outer pipe assembly, inner tube assembly, weighting tube way-type drilling unit, it is characterized in that, described outer pipe assembly comprises outer tube (3), is connected to the upper reamer (4) at the upper and lower two ends of described outer tube, the upper end of UR device (2), described upper reamer (4) is connected with outer tube short circuit (5), and the lower end of described UR device (2) is connected with drill bit (1); Described inner tube assembly is made up of interior pipe (8), the clip spring seat (6) being connected to described interior pipe lower end, interior pipe single action rock core fishing device (9) that is connected to interior pipe upper end, is provided with jump ring (7) in described clip spring seat (6); Described weighting tube way-type drilling unit comprises and is connected to many weighting tubes on described outer tube short circuit (5) and multiple centralizer, and described weighting tube and centralizer are in being arranged alternately, on weighting tube, centralizer (13) connects a transition weighting tube (14), and conventional rope coring drill pipe (16) is connected on transition weighting tube centralizer (15).
2. wire line coring according to claim 1 increases the weight of to pressurize at the bottom of pore way-type drilling unit, it is characterized in that, what the lower end being in centralizer topmost connected is transition weighting tube (14), described transition weighting tube external diameter is less than the external diameter of weighting tube and is greater than the external diameter 1 ~ 2 grade of conventional rope coring drill pipe (16), and every grade differential is 10 ~ 15mm.
3. wire line coring according to claim 1 increases the weight of to pressurize at the bottom of pore way-type drilling unit, it is characterized in that, the diameter of described drill bit (1) 10 ~ 12mm larger than the diameter of described outer tube and weighting tube, and the length of single described weighting tube is 9m; Described reamer external diameter and the same footpath of described outside diameter, described centralizer external diameter 1 ~ 2mm less of described outside diameter.
4. wire line coring according to claim 2 increases the weight of to pressurize at the bottom of pore way-type drilling unit, it is characterized in that, the length of described transition weighting tube (14) is 6 ~ 9m, transition weighting tube (14), be positioned at the centralizer between transition weighting tube and conventional rope coring drill pipe (16), and between conventional rope coring drill pipe (16) three, form the tower combination of major diameter weighting tube and the differential transition of the conventional rope coring drill pipe external diameter of minor diameter, this centralizer place creeps in operation process, conventional rope coring drill pipe post upwards bears the two power points of neutralization that pulling force and weighting tube Gravitative Loads pressurize at the bottom of hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824660.1U CN205047180U (en) | 2015-10-19 | 2015-10-19 | Rope coring and weighting pipe hole bottom pressurization combined drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520824660.1U CN205047180U (en) | 2015-10-19 | 2015-10-19 | Rope coring and weighting pipe hole bottom pressurization combined drilling tool |
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| Publication Number | Publication Date |
|---|---|
| CN205047180U true CN205047180U (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520824660.1U Active CN205047180U (en) | 2015-10-19 | 2015-10-19 | Rope coring and weighting pipe hole bottom pressurization combined drilling tool |
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| Country | Link |
|---|---|
| CN (1) | CN205047180U (en) |
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