CN1408982A - Method and equipment for drilling large bore well (hole) using small size screw drill tool combination - Google Patents
Method and equipment for drilling large bore well (hole) using small size screw drill tool combination Download PDFInfo
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- CN1408982A CN1408982A CN 01141747 CN01141747A CN1408982A CN 1408982 A CN1408982 A CN 1408982A CN 01141747 CN01141747 CN 01141747 CN 01141747 A CN01141747 A CN 01141747A CN 1408982 A CN1408982 A CN 1408982A
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Abstract
At least two independent screw drill tools with small size are fixed and connected parallelly via upper joint and tying mechanism to form the combined drill tool. The combined drill tool has common joint in the top, conic buckle in the upper part, cavity in the mid part and conic buckle set connected to the transition joint in the lower part. The screw drill tools with small size are connected to the lower end of the transition joint and each of the screw drill tools forms independent power output end in the lower end to rotate the bit. The present invention is used to drill large bore well or hole. The present invention also provides the method of drilling large bore wall or hole.
Description
Affiliated field
The present invention is method and the equipment about construction operations such as a kind of geology, oil drilling, building and bridge pile foundation holes, is a kind of method and equipment with small size helicoid hydraulic motor combination drill large-diameter well (hole) specifically.
Background technology
In the oil/gas drilling operation, top well section is the bigger well of diameter often.In building operations, bridge pile foundation hole and other underground engineering constructions, also often run into the eyelet that will bore larger caliber.
In oil/gas drilling, the well that this diameter is bigger generally can be divided into following several situation:
1. major diameter vertical boreholes;
2. major diameter crooked hole;
3. vertical, the crooked and oblique same well of the mutual linking of straight size of the same race of major diameter.
The routine techniques of oil/gas drilling is: bore top major diameter vertical boreholes, generally bore the corresponding large scale drill bit of mode band with rotating disk and creep into; (diameter is generally 17 to non-major diameter crooked hole
1/
2" be that φ 444mm is following), then adopt the straight helicoid hydraulic motor of corresponding size to add and join bent sub or curved housing helicoid hydraulic motor, adopt oriented approach to creep into, or pull out of hole and use rotating disk instead and bore the combination rotary drilling.
But, for large diameter crooked hole (diameter is generally 20 " be φ 508mm and more than, as 26 " be φ 660mm etc.), if adopt the rotating disk mode of boring then to be difficult to control hole deviation and orientation; If adopt the helicoid hydraulic motor directional drilling, then can't implement because of can not find the large scale helicoid hydraulic motor that adapts to it.Although this situation runs into seldom (can manage to be avoided) from the casing programme design in the oil/gas drilling operation, there is unavoidable situation really, cause construction to be difficult to carry out.Cause the basic reason of this situation to be that the maximum size of present helicoid hydraulic motor series of products is 9
5/
8" (φ 244mm), it is suitable for boring 12
1/
4" (φ 311mm) well is used to bore 17 reluctantly
1/
2" (φ 444mm) well, for more the large scale well is then powerless, this is because the intrinsic characteristic of helicoid hydraulic motor is determined, does not generally design and develop larger sized helicoid hydraulic motor.
Summary of the invention
The objective of the invention is to, a kind of cluster small size screw combinations drilling tool is provided, utilize existing small size helicoid hydraulic motor, can drill large-caliber well (hole).
The present invention also aims to, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole) is provided, utilize existing small size helicoid hydraulic motor, can bore vertical or oblique straight heavy caliber well (hole).
The present invention also aims to, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole) is provided, utilize existing small size helicoid hydraulic motor, can bore vertical or bore vertical-crooked-tiltedly straight heavy caliber well (hole) that makes up well that waits.
A kind of cluster small size screw combinations drilling tool provided by the present invention includes two small size helicoid hydraulic motors independently separately at least, and these small size screw rods are realized fixingly and in parallel by public coupling head and the binding mechanism of going up, and constitute a drilling tool integral body; The top of this way-type drilling unit is the public coupling head of going up, and its upper end is an awl button, links to each other with last square drill collar, and the middle part is a cavity, and the lower end is one group of awl button, links to each other with the transit joint of its below; The small size helicoid hydraulic motor is connected with the lower end of transit joint; The lower end of each small screw drilling tool is formed with separately independently clutch end, and this clutch end drives bit system and rotates.
A kind of method provided by the present invention with small size screw combinations drilling tool drill large-caliber well (hole), be to utilize the combinations thereof drilling tool, by public go up coupling head the drilling fluid uniform distribution to each small size helicoid hydraulic motor, make each small size helicoid hydraulic motor keep respectively independently power output; The clutch end of this way-type drilling unit is connected with bit system, realizes creeping into of large-diameter well (hole).
The present invention has comprised following two kinds of dissimilar cluster small size screw combinations and processes:
1, the cluster small screw way-type drilling unit and the process of double-deck independent drill bit configuration.
The cluster small screw way-type drilling unit of this type is that at least three undersized helicoid hydraulic motors are constituted with in parallel the fixing of binding mode.A drill bit that is positioned at the small size screw rod of center is positioned at lower floor, at the uniform two or more small size screw rods of periphery, with central screw shaft to staggering, its drill bit is positioned at the upper strata; The projection of two-layer up and down drill bit on the axial vertical plane of well is all circle, and there is the overlapping region in the projection circle of the projection of lower floor's drill bit circle and each drill bit of upper strata.
Utilize the method for this way-type drilling unit drill large-caliber well (hole), be by public go up coupling head with the drilling fluid uniform distribution in each small size helicoid hydraulic motor, make each small size helicoid hydraulic motor keep respectively independently clutch end, each clutch end is drill bit of drive respectively.Rotary drill column drives the whole rotation of way-type drilling unit, and the center bit that is positioned at lower floor is led and got out the neck eye, and each drill bit on upper strata is made revolution motion again in rotation, bore the rock of depositing between each drill bit.Two-layer drill bit must cover whole shaft bottoms up and down in week rotation, gets out bigbore well or hole.
This way-type drilling unit tiltedly can realize that drop angle creeps in the straight well, and also configurable stabilizer gets out slant hole.
2, with the cluster small screw way-type drilling unit of the shared drill bit configuration of layer multiaxis and the cluster small screw way-type drilling unit of this type of process, be that at least two small sizes are bent the housing stearable assemlies, put its structure bent angle and be positioned at same direction and form same tool-face, in parallel fixing and constitute in the binding mode.The clutch end of each screw rod does not have axial dislocation, is positioned on the same aspect, drives a special big drill bit rotation jointly.
Utilize the method for this way-type drilling unit drill large-caliber well (hole), be by public go up coupling head with the drilling fluid uniform distribution in each small size helicoid hydraulic motor, make the curved housing helicoid hydraulic motor of each small size keep respectively independently power output; With special major diameter drill bit of the common driving of the clutch end that disposes with layer mode, get out bigbore well or hole.
When creeping into curved portion, the cluster screw combinations with common tool face azimuth is as single stearable assemly, directional drilling (drill string does not change); Turn round the orientation and be changed to directed state too; When the need hold angle creeps into, can start rotating disk guiding and creep into and get out oblique straight well section; Also can creep into and get out vertical boreholes in peupendicular hole section guiding.
Principle of the present invention and effect, be (as φ 244 in existing screw size series of products, φ 197, φ 165, and φ 120, and φ 95 ...), choose one or both suitable diameter kinds, carry out " binding " by certain combination side,, make it become a kind of new collapsible tool to increase its work moment and borehole diameter; At different targets (as vertical large scale well, vertical-curved-tiltedly straight combination well etc.), adopt different axial arrangement (double-deck independent drill bit mode is with the shared drill bit mode of layer multiaxis), to guarantee to get out the large scale well that meets the demands.
Utilize the method for the present invention, can bore vertical big hole, and bore vertical-crooked-tiltedly straight combination well etc. with combination of small size helicoid hydraulic motor and drill large-caliber well (hole).
Description of drawings
The structural representation of Fig. 1 embodiments of the invention 1;
The structural representation of the public coupling head of Fig. 2 embodiment of the invention 1;
The A-A sectional view of Fig. 3 Fig. 2 of the present invention;
The structural representation of the transit joint of Fig. 4 embodiment of the invention 1;
The structural representation of the annular binding of Fig. 5 embodiment of the invention 1;
The A-A sectional view of Fig. 6 Fig. 5 of the present invention;
First kind of compound mode floor map of Fig. 7 embodiment of the invention 1;
Second kind of compound mode floor map of Fig. 8 embodiment of the invention 1;
The third compound mode floor map of Fig. 9 embodiment of the invention 1;
The double-deck configuration structure schematic diagram of Figure 10 embodiment of the invention 1;
The structural representation of Figure 11 embodiments of the invention 2;
The structural representation of screw drive axle and drill bit in Figure 12 embodiments of the invention 2.
The C-C sectional view of Figure 13 Figure 12 of the present invention.
The specific embodiment
Present embodiment provides the cluster small screw way-type drilling unit (structural representation such as Fig. 1 are to shown in Figure 7) and the process of the independent drill bit configuration of a kind of bilayer, the compound mode of present embodiment is mainly used in bores vertical big hole, also can bore slant hole or drop angle well.
According to technical thought of the present invention, present embodiment provides the cluster screw combinations drilling tool of the independent drill bit configuration of a kind of bilayer, as shown in Figure 1, this way-type drilling unit includes three small size helicoid hydraulic motors 1 independently separately at least, realize that by binding mechanism binding in parallel is fixing, constitute a drilling tool integral body; By one public go up coupling head 2 with the drilling fluid mean allocation to each small size helicoid hydraulic motor 1, each helicoid hydraulic motor 1 drives separately independently drill bit respectively; Drill bit adopts double-deck configuration, axially staggers along helicoid hydraulic motor 1, and center bolt and drill bit 121 thereof be relatively by down, and other several helicoid hydraulic motors 1 lean on last relatively and its drill bit 122 is positioned at same aspect.
The course of work of present embodiment is that the drilling fluid in the drill string drives their also drive drill bit rotations separately through last square drill collar, public coupling head 2 and transit joint 3 each helicoid hydraulic motor 1 of inflow gone up.Under the non-rotary situation of drill string, center bit 121 gets out the neck eye, gets out independent pit along all drill bits 122.Under the situation of rotary drill column, the revolution motion along all drill bits 122 can bore the rock of depositing between the pit, thereby forms the ring-type shaft bottom.Because the guide of center bit 121 gets out the neck eye, wasted work is little, Yi Baozhi; Follow-up bradawl head reaming hole is realized easily, therefore can get out vertical boreholes.
The design principles of the combination of present embodiment is:
(1) chooses one or more small size helicoid hydraulic motors 1 and form combination, reduce selected tool kind as far as possible;
(2) drill bit 121,122 of all screw rod drive topped whole shaft bottoms of necessary energy in week rotation, in other words, each independent drill bit is a circle to the projection one week rotation superposition of its vertical plane axially along well;
(3) must not there be movement interference between each helicoid hydraulic motor 1 of each drill bit;
(4) binding is reliable between each helicoid hydraulic motor 1, adapts to the underground work environment.
Determined following process and design main points according to mentioned above principle:
(1) the whole rotation mode that adopts of drill string;
(2) each helicoid hydraulic motor 1 drive drill bit 121,122;
(3) center bit 121 and adopt double-deck configuration along all drill bit 122.Can adopt one big several for a short time on plane relation, promptly the center is big drill bit 121, along the several bradawl heads 122 of Zhou Junbu, as shown in Figure 8; Or one is little several big, and promptly the center is a bradawl head 121, along the several big drill bits 122 of Zhou Junbu, as shown in Figure 9.The solid line circle is outside diameter among the figure, and broken circle is the diameter of corresponding helicoid hydraulic motor 1.Constitute one deck by a small size screw rod drill bit 121 that is positioned at the center, can be evenly equipped with two or more small size screw rod drill bits 122 at its periphery and constitute other one deck, and the total in the plane relation that intersects that exists of the cylindrical 122 of each screw rod drill bit in the cylindrical of center bolt drill bit 121 and another layer.Consider that the neck eye creeps into, and reduce tool configuration, it is more reasonable generally to adopt with the drill bit configuration of a kind of helicoid hydraulic motor combination and " big three is little ", as shown in Figure 7;
(4) several helicoid hydraulic motors 1 axially stagger, and center bolt and drill bit 121 are relatively by following, and other several screw rods are positioned at same aspect by last and its drill bit 122 relatively, as shown in figure 10;
(5) parallel connection is realized by public upward coupling head 2 in the upper end of several helicoid hydraulic motors 1, and have 1-2 annular binding 4 to realize at the middle part of each helicoid hydraulic motor 1 fixing and in parallel.
The structure of the embodiment 1 of the double-deck configuration mode of the drill bit that present embodiment provides such as Fig. 1 are to shown in Figure 7.In the present embodiment, adopt one big three little drill bit compound mode, wherein:
The center of screw combinations drilling tool is a undersized helicoid hydraulic motor 1, and what be uniformly distributed along the circumference is three helicoid hydraulic motors 1 with center bolt size of the same race, the corresponding with it big drill bit 121 of configuration and three bradawl heads 122 respectively.The screw rod at center and big drill bit 121 are relative to down, and be relative to last with bradawl head 122 along three screw rods in week, thus form double-deck dispose and lead creep into, the mode of follow-up reaming hole.
Public structure such as Fig. 2, shown in Figure 3 that goes up coupling head 2 described in the present invention.Its top is a taper thread box 21, is used for linking to each other with the pin thread of last square drill collar; Its middle part is a cavity 22; Its lower end is four box taper threads 23, links to each other with four transit joints 3 of below; Drilling fluid is entered in the public cavity of going up in the coupling head 2 22 by the drill collar of top, flows into each small size helicoid hydraulic motor 1 through transition joint 3, constitutes the drilling fluid distributor gear.The groove 24 that this public outer cylinder surface of going up coupling head 2 connects through being processed to form smooth kiss is so that drilling fluid passes through.
Public below of going up coupling head 2 is four transit joints (two male threads), as shown in Figure 4, links to each other with the box of 4 helicoid hydraulic motors of below respectively.Because center bolt drilling tool 1 is relatively by down, and drill bit 121 is positioned under other three bradawl heads 122, so the length of middle transitional joint 3 is greater than other three transit joints 3, to make position compensation for a neck mode disposes.
Be the helicoid hydraulic motor 1 of four diameters of the same race below the transit joint, arrange by mode shown in Figure 7.Two annular binding 4, its structure such as Fig. 5, shown in Figure 6 are arranged at middle part and bottom in drilling assembly.Four helicoid hydraulic motors 1 pass annular binding 4 corresponding through holes 41, realize fixing and add being coated with locking glue by marking closely screw; At the upper and lower ora terminalis place of annular binding 4, further connect firmly by spot welding and four helicoid hydraulic motors.These annular binding 4 peripheries are provided with groove 42, and drilling fluid groove 42 thus passes through.
The below of four helicoid hydraulic motors 1 is that the drill bit 121,122, big three of four two kinds of specifications is little, forms the bilayer configuration of neck eye-reaming type.
The course of work of present embodiment is as follows: the drilling fluid in the drill string flows into four helicoid hydraulic motors 1 respectively by last square drill collar, the public transit joint 3 of going up coupling head 2 and each screw rod, drives them and also drives drill bit 121,122 rotations.Under the non-rotary situation of drill string, the big drill bit 121 in center gets out the neck eye, gets out three independent pit along three all bradawl heads 122.But under the situation of rotary drill column, the revolution motion along three all drill bits 122 can bore the rock of depositing between the pit, thereby forms the ring-type shaft bottom.Because the guide of big drill bit 121 gets out the neck eye, wasted work is little, Yi Baozhi; Follow-up three bradawl head 122 reaming holes are realized easily, therefore can get out vertical boreholes.
In oblique straight well, this drilling tool can realize that drop angle creeps into, and also can dispose stabilizer again and get out slant hole.
Present embodiment provides a kind of cluster small screw way-type drilling unit and process with the shared drill bit configuration of layer multiaxis.The small screw combination and the process of present embodiment are deflecting, the hold angles that is used to bore directional well, horizontal well and turn round orientation well section.
According to mentality of designing of the present invention, in the present embodiment, as shown in figure 11, bend housing helicoid hydraulic motor 1 to two small sizes of major general and be combined into a way-type drilling unit in parallel connection binding mode, by public go up coupling head 2 with the drilling fluid uniform distribution in each small size helicoid hydraulic motor 1, make each small size helicoid hydraulic motor 1 keep respectively independently power output; The output of small screw drilling tool 1 drives 5 rotations of a special big drill bit jointly in same aspect, can get out big well or hole by creeping into of big drill bit 5.
In the present embodiment, the minor diameter helicoid hydraulic motor is curved housing stearable assemly 1, and when bundling, the structure bent angle of each small screw is positioned at same direction, to form same tool-face and the drill string integral body that can turn round the orientation jointly.
The operating principle of present embodiment is, drilling fluid is delivered to the curved housing helicoid hydraulic motor 1 of several parallel connections by top drill collar, public upward coupling head 2 and 3 shuntings of two public transit joint, drive the rotation of several screw motors, drive big drill bit 5 bodies rotation, creep into through separately clutch end.Drilling fluid flows into the drill bit 5 body interior cavitys 53 from the power transmission shaft 11 of several helicoid hydraulic motors 1, and the hydrophthalmia 54 on drill bit 5 bodies penetrates, with the bottom-hole cleaning.Because ring gear 51 belongs to enforceable mechanical synchronization with several pinions 6, and the rotating speed of every screw rod may there are differences, its speed discrepancy can be realized compensation by the rotor mesopore 13 of every screw rod.
Between the curved point of the upper end of drilling assembly shown in the present embodiment and screw rod, be provided with an annular binding 4 at least; Appropriate location below curved point is provided with an annular binding 4 at least.Therefore, when creeping into curved portion, the cluster screw combinations with common tool face azimuth is as single stearable assemly, directional drilling (drill string does not change); Turn round the orientation and be changed to directed state too; When the need hold angle creeps into, can start the rotating disk guiding and creep into, so get out oblique straight well section; Also can creep into and get out vertical boreholes in peupendicular hole section guiding.
At present embodiment, can choose curved housing helicoid hydraulic motor 1 binding of one or more small sizes and form combination, preferably select the small screw of same model; Each small screw upper end is by public parallel connection binding of going up coupling head 2 realization upper ends; The clutch end of several helicoid hydraulic motors 1 adopts with layer configuration, and the clutch end of each small screw keeps the state that is meshing with each other with big drill bit 5 bodies.
The way-type drilling unit structure of present embodiment such as Figure 11, Figure 12, shown in Figure 13.
The top of small screw combination be public on coupling head 2, below be transit joint 3 (two pin thread), transit joint is the minor diameter helicoid hydraulic motor 1 (generally can be three) of several models of the same race below 3, is 120 ° along circumference and evenly arranges.These minor diameter helicoid hydraulic motors 1 are curved housing stearable assemly, and its structure bent angle is positioned at same direction, to form same tool-face.Between the curved point of coupling head 2 and screw rod, an annular binding 4 is arranged on public; There is another annular binding 4 appropriate location below curved point.The structural shape of two annular binding 4, installation and coupling method, and the structural shape of public upward coupling head 2 is substantially the same manner as Example 1.
The marked difference of this kind screw combinations and the foregoing description 1 is several shared special big drill bits 5 of helicoid hydraulic motor, and several these special big drill bit 5 rotations of helicoid hydraulic motor 1 common drive are crept into realization.In order to realize this enforceable mechanical synchronization requirement, the rotor center of every screw rod is drilled with small through hole 13, thereby with bypass drilling fluid compensation slip; The special construction design different with the conventional screw drilling tool adopted in power transmission shaft 11 lower ends of every screw rod, assembles with public drill bit 5, as shown in figure 13.
In Figure 13, the respective aperture that power transmission shaft 11 overhanging ends of several helicoid hydraulic motors 1 pass annular cover plate 52, axle head links to each other with respective pinions 6 (external gear) by key, and axle lower end car has left hand thread, tightens to realize that the spacing of pinion 6 is with fixing with dish type left-handed nut 61.Power transmission shaft 11 assembly shells 12 ends are realized locking being connected to shell 12 ends and annular cover plate 52 by screw and spring washer, thereby shell 12 ends are held out against in corresponding spill annular groove 522.Drill bit 5 body interior are annular grooves 53, and ring gear 51 (stationary fit) is housed in the groove 53, and bearing (bearing with cross roller) is housed on the external cylindrical surface, and internal recess 53 bottom surfaces are provided with hydrophthalmia 54; 5 on drill bit is external to be outer collar 55, in bearing outside is housed, outer collar 55 tops are annular cover plates 52.Dress position-limit mechanism 56 on the drill bit 5 body external cylindrical surfaces is to limit big drill bit 5 moving axially with respect to turning cylinder 11.5 on drill bit is external or gear wheel or the corresponding cutting object of diamond bit are housed, thereby constitutes rock bit or diamond bit.Be equipped with sealing ring 521 and realize the motion sealing by screw drill transmission shaft 11 wherein at annular cover plate 52 endoporus places.
The cluster small screw drilling assembly that Figure 11,12, the shared drill bit of same layer multiaxis shown in Figure 13 dispose is work like this: the curved housing helicoid hydraulic motor 1 that is delivered to several parallel connections when drilling fluid through top drill collar, public upward coupling head 2 and 3 shuntings of two public transit joint, drive several screw motor rotations, through power transmission shaft 11 and axle head pinion 6 drive ring gears 51 separately, thereby drive the rotation of drill bit 5 bodies, creep into.Drilling fluid is from the annular groove 53 of power transmission shaft 11 inflow drill bits 5 body interior of several helicoid hydraulic motors 1, and the hydrophthalmia 54 through these annular groove 53 bottoms penetrates, to clean drill bit 5 and shaft bottom.Because ring gear 51 belongs to enforceable mechanical synchronization with several pinions 6, and the rotating speed of every screw rod may there are differences, the through hole 13 of the rotor center that its speed discrepancy can be by every screw rod is realized compensating.
When creeping into curved portion, the cluster screw combinations with common tool face azimuth is as single stearable assemly, directional drilling (drill string does not change); Turn round the orientation and be changed to directed state too; When the need hold angle creeps into, creep into and get out oblique straight well section so can start rotating disk guiding; Also can creep into and get out vertical boreholes in peupendicular hole section guiding.
The present invention also can be used for the macropore drilling construction of geological prospecting, building and bridge pile foundation hole and other underground constructions except that boring the oil gas well, process is as above-mentioned.Can at concrete macropore diameter, select for use size, quantity, the arrangement of suitable small screw drilling tool to carry out specific design according to the described method of aforesaid embodiment.
Claims (25)
1, a kind of cluster small size screw combinations drilling tool, it is characterized in that, this way-type drilling unit includes two small size helicoid hydraulic motors independently separately at least, and these small size screw rods are realized fixingly and in parallel by public coupling head and the binding mechanism of going up, and constitute a drilling tool integral body; The top of this way-type drilling unit is the public coupling head of going up, and this public upper end of going up coupling head is an awl button, links to each other with last square drill collar, and the middle part is a cavity, and the lower end is one group of awl button, links to each other with the upper end of its below transit joint; The small size helicoid hydraulic motor is connected with the lower end of transit joint; The lower end of each small screw drilling tool is formed with separately independently clutch end, and this clutch end drives bit system and rotates.
2, cluster screw combinations drilling tool according to claim 1 is characterized in that, described public go up the upper end binding of coupling head formation small size helicoid hydraulic motor and this drilling fluid distribution of distribution of drilling fluid; The upper end of this public upward coupling head and drill collar are linked by awl and connect and conducting, and the lower end links to each other with one group of transit joint, and drilling fluid branches to each small size helicoid hydraulic motor through the mesopore of transition joint.
3, cluster screw combinations drilling tool according to claim 1 is characterized in that, described transit joint is the hollow structure that two ends have the awl button, and an end links to each other with public upward coupling head, and the other end and helicoid hydraulic motor join.
4, cluster screw combinations drilling tool according to claim 1, it is characterized in that, described way-type drilling unit can be provided with two or more annular binding in middle part and bottom, and the small screw drilling tool passes the through hole on this annular binding, and fixedlys connected with this annular binding.
5, according to claim 1 or 4 described cluster screw combinations drilling tools, it is characterized in that described annular binding periphery is provided with groove, drilling fluid groove thus passes through.
6, cluster screw combinations drilling tool according to claim 1 is characterized in that, the output of described small screw drilling tool is that the clutch end of each small screw is drill bit of drive respectively with the layered mode configuration, to constitute the layering bit system; Drive this way-type drilling unit unitary rotation by drill string rotating.
7, cluster screw combinations drilling tool according to claim 6; It is characterized in that the center of described screw combinations drilling tool is a small size helicoid hydraulic motor, its clutch end by down, constitutes lower floor relatively; At peripheral uniform two or more small size screw rods of this way-type drilling unit, its clutch end constitutes the upper strata relatively by last.
8, according to claim 6 or 7 described cluster combined threaded rod drilling tools, it is characterized in that, by the two-layer drill bit that the small size helicoid hydraulic motor is driven, the projection on the axial vertical plane of well is all circle, and there is the overlapping region in the projection circle of the projection of lower floor's drill bit circle and each drill bit of upper strata.
9, cluster screw combinations drilling tool according to claim 6 is characterized in that, the small size screw rod that constitutes way-type drilling unit can be different specification.
10, cluster screw combinations drilling tool according to claim 1 is characterized in that, the output of described small screw drilling tool is to bundle configuration with layer mode; Big drill bit of the common driving of the clutch end of small size helicoid hydraulic motor constitutes described bit system.
11, cluster screw combinations drilling tool according to claim 10 is characterized in that, the output of described small screw drilling tool can be connected in big drill bit by mechanical drive mode, and drives its rotation.
12, cluster combined threaded rod drilling tool according to claim 10 is characterized in that, the output of described small screw drilling tool links to each other with pinion (external gear), and drill body inside has ring gear, with those pinion, makes its rotation.
13, cluster screw combinations drilling tool according to claim 10 is characterized in that, described drill body is outer or gear wheel or the corresponding cutting object of diamond bit are housed, thereby constitutes rock bit or diamond bit.Cover plate is housed on drill body, and sealing ring is equipped with at its endoporus place, with the sealing of moving by screw drill transmission shaft realization wherein.
14, cluster screw combinations drilling tool according to claim 10 is characterized in that, drill body inside is an annular groove, and bottom portion of groove has a hydrophthalmia at least.
15, cluster screw combinations drilling tool according to claim 10 is characterized in that the rotor center of described every small size screw rod is drilled with small through hole, compensates the slip of each screw rod with the bypass drilling fluid.
16, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole), it is characterized in that, at least two small size helicoid hydraulic motors are formed a way-type drilling unit in the binding mode, by public go up coupling head the drilling fluid uniform distribution to each small size helicoid hydraulic motor, make each small size helicoid hydraulic motor keep respectively independently power output; The clutch end of this way-type drilling unit is connected with bit system, realizes creeping into of large-diameter well (hole).
17, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole), it is characterized in that, at least two small size helicoid hydraulic motors are formed a way-type drilling unit in the binding mode, by public go up coupling head the drilling fluid uniform distribution to each small size helicoid hydraulic motor, make each small size helicoid hydraulic motor keep respectively independently power output; Clutch end disposes with layered mode, and each clutch end is drill bit of drive respectively, to constitute the layering bit system.
18, a kind of method according to claim 17 with small size helicoid hydraulic motor combination drill large-diameter well (hole), its feature comprises following process at least:
(1) chooses one or more small size helicoid hydraulic motor bindings and form combination, reduce selected tool kind as far as possible;
(2) each small screw upper end is realized in parallel and the drilling fluid distribution by public upward coupling head, and each screw rod is realized fixing by an annular binding at least and be in parallel;
(3) drill bit adopts double-deck configuration, and helicoid hydraulic motor axially staggers.Center bolt and drill bit are relatively by following, and other several screw rods are positioned at same aspect by last and drill bit relatively;
(4) each small screw drilling tool drive drill bit;
(5) the whole employing of drill string selected rotation mode for use;
(6) must not there be movement interference between each screw rod of each drill bit;
(7) each independent drill bit is a circle to the projection of its vertical plane axially along well, and the drill bit of all screw rod drive is the topped whole shaft bottoms of necessary energy in week rotation;
(8) turn on pump, the drilling fluid in the drill string flows into the small size helicoid hydraulic motor respectively through public upward coupling head, drives them and also drives the drill bit rotation; Rotary drill column drives the whole rotation of way-type drilling unit, and the center bit that is positioned at the lower end is led and got out the neck eye, and each drill bit on upper strata is made revolution motion again in rotation, bore the rock of depositing between each drill bit, forms the ring-type shaft bottom, gets out large-diameter well or hole.
19, according to claim 17 or 18 described a kind of methods, it is characterized in that, can get out vertical boreholes with small size helicoid hydraulic motor combination drill large-diameter well (hole), or slant hole and drop angle well.
20, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole), it is characterized in that, at least two small size helicoid hydraulic motors are formed a way-type drilling unit in the binding mode, by public go up coupling head the drilling fluid uniform distribution to each small size helicoid hydraulic motor, make each small size helicoid hydraulic motor keep respectively independently power output; Clutch end is positioned at same one deck, drives a special big drill bit jointly.
21, a kind of method according to claim 20 with small size helicoid hydraulic motor combination drill large-diameter well (hole), its feature comprises following process at least:
(1) the small size helicoid hydraulic motor binding formation of choosing model of the same race is made up;
(2) these small size helicoid hydraulic motors are curved housing stearable assemly, and its structure bent angle is positioned at same direction, to form same tool-face;
(3) each screw rod is along the circumferential direction evenly arranged by public distribution of going up coupling head realization upper end parallel connection and drilling fluid;
(4) between the curved point of coupling head and screw rod, be provided with an annular binding at least on way-type drilling unit public, the appropriate location below curved point is provided with an annular binding at least;
(5) clutch end of selected small size helicoid hydraulic motor adopts with layer configuration, and the clutch end of each screw rod keeps the state of being meshing with each other simultaneously with big drill body;
(6) turn on pump, the drilling fluid in the drill string flows into each small size helicoid hydraulic motor through public upward coupling head, and each screw motor rotates simultaneously, drives big drill bit rotation jointly, creeps into downwards, gets out bigbore well or hole.
22, a kind of method according to claim 20 with small size helicoid hydraulic motor combination drill large-diameter well (hole), it is characterized in that, when creeping into curved portion, the cluster screw combinations drilling tool with common tool face azimuth is as single stearable assemly, directional drilling.
23, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole) according to claim 20 is characterized in that, when hold angle creeps into, can start the rotating disk guiding and bore, and gets out oblique straight well section.
24, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole) according to claim 20 is characterized in that, creeps in peupendicular hole section guiding and gets out vertical boreholes.
25, a kind of method with small size helicoid hydraulic motor combination drill large-diameter well (hole) according to claim 20 is characterized in that, the rotor mesopore of each small screw drilling tool is realized the speed discrepancy compensation of each small screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01141747 CN1408982A (en) | 2001-09-17 | 2001-09-17 | Method and equipment for drilling large bore well (hole) using small size screw drill tool combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01141747 CN1408982A (en) | 2001-09-17 | 2001-09-17 | Method and equipment for drilling large bore well (hole) using small size screw drill tool combination |
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| Publication Number | Publication Date |
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| CN1408982A true CN1408982A (en) | 2003-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01141747 Pending CN1408982A (en) | 2001-09-17 | 2001-09-17 | Method and equipment for drilling large bore well (hole) using small size screw drill tool combination |
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| CN (1) | CN1408982A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013164A (en) * | 2017-06-01 | 2017-08-04 | 奥瑞拓能源科技股份有限公司 | Underground double motor equipment |
| CN107060776A (en) * | 2017-05-12 | 2017-08-18 | 上海广联环境岩土工程股份有限公司 | The unit development machine combination of underground interface channel draws in construction method |
| CN109882222A (en) * | 2019-04-04 | 2019-06-14 | 河南理工大学 | The method that small size double circular hole drilling tool and roadway grouting reinforce country rock |
-
2001
- 2001-09-17 CN CN 01141747 patent/CN1408982A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060776A (en) * | 2017-05-12 | 2017-08-18 | 上海广联环境岩土工程股份有限公司 | The unit development machine combination of underground interface channel draws in construction method |
| CN107013164A (en) * | 2017-06-01 | 2017-08-04 | 奥瑞拓能源科技股份有限公司 | Underground double motor equipment |
| CN109882222A (en) * | 2019-04-04 | 2019-06-14 | 河南理工大学 | The method that small size double circular hole drilling tool and roadway grouting reinforce country rock |
| CN109882222B (en) * | 2019-04-04 | 2023-10-13 | 河南理工大学 | Small-size double-round hole drilling tool and method for grouting and reinforcing surrounding rock in roadway |
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