CN204476294U - The brill of the bionical nozzle of a kind of build-in expands integral type drilling tool - Google Patents

Abstract

The utility model relates to a drilling and expansion integrated drilling tool embedded with a bionic nozzle, which includes an impregnated diamond drill bit, a transition joint, a multi-stage reamer, and an impactor; one end of the multi-stage reamer and one end of the transition joint There is a sealed connection between the other end and one end of the impactor; the impregnated diamond drill bit is set at the end of the transition joint away from the multi-stage reamer; the multi-stage reamer includes a drill body and a cutting ring; the drill body There is a central channel through the entire drill body inside; the cutting ring is set to multi-stage, and the multi-stage cutting ring is arranged in the middle of the drill body, and the cutting diameter of the multi-stage cutting ring decreases along the direction of reaming drilling; each stage of cutting ring consists of It consists of multiple cutting units uniformly arranged along the circumference of the drill body. The beneficial effects of the utility model are: the utility model can simultaneously implement two construction procedures of drilling and reaming in the rock and soil mass, which greatly shortens the time of traditional construction operations and can effectively reduce construction costs.

Description

A Drilling and Expansion Integrated Drill Tool with Embedded Bionic Nozzle

technical field

The utility model relates to a drilling and expansion integrated drilling tool embedded with a bionic nozzle.

Background technique

Grouting (Injection Grout), also known as grouting (Grouting), is a commonly used technical means for rock and soil reinforcement and anti-seepage and geological disaster management in mining, water conservancy and hydropower, transportation, construction and other engineering fields. It is to configure the material with filling and cementing properties into a slurry according to a certain proportion, and use the grouting equipment to inject it into the formation (rock and soil body) through the grouting pipe. The slurry is infiltrated, filled, split, compacted, etc. Diffusion in the rock and soil, with the coagulation and hardening of the grout, a "stone body" or "gel" with a relatively complete structure, high waterproof and impermeability performance, and good chemical stability is formed in the voids of the formation. The originally loose soil particles or cracks are cemented into a whole to achieve the purpose of reinforcing the injected formation or preventing seepage and plugging. For the construction of grouting, anchor rod/cable, bored pile, etc., as well as the exploration or exploitation of natural gas hydrate, oil shale, shale gas, oil/natural gas, groundwater, etc., the process flow generally adopted The first step is to drill holes of certain specifications according to the requirements, so as to inject grout into the rock and soil mass, insert anchor rods/cables, lower reinforcement cages to cast piles, or lower into suitable exploration or mining. Equipment and so on.

In the process of drilling into holes, the traditional drilling tools and drilling methods are mostly drilling operations using a drill bit, which can only be drilled into a single hole with the same diameter and drill bit specifications. Sometimes due to some unforeseen factors (such as borehole shrinkage, collapse, etc. caused by the instability of the hole wall), or because Party A temporarily changes the drilling design requirements, in order to meet the drilling design requirements proposed by Party A, it is necessary to Reaming the previously drilled small-diameter borehole to increase its aperture, so that the grouting pipes or other equipment with larger apertures can be lowered. At this time, according to the conventional method, only a large-caliber drill bit can only be replaced. Re-sweep the hole from the surface or re-sweep the hole with a reamer to make the hole reach the required diameter; the former, replacing a large-diameter drill bit and re-sweeping the hole from the surface can not give full play to the performance of the new drill bit, because At this time, in the process of sweeping the new drill bit, only the part of the outer circle of the drill bit that is in contact with the rock and soil mass cuts and breaks the rock and soil mass when drilling, while the part of the inner circle of the drill bit that is not in contact with the rock and soil mass is cut from the beginning to the end. Tail does not play a role all the time, until use this new drill bit to complete the sweeping work, when the outer ring part of the drill bit has been scrapped, the inner ring part of the circumference of the drill bit is still unused, which will undoubtedly cause the waste of new drill bits; the latter, using When the reamer reams the previously drilled small-diameter borehole, although it can increase the diameter of the previously drilled small-diameter borehole, the depth to which the reamer can complete the reaming is generally only the maximum depth of the previously drilled small-diameter hole. The depth of the drilled hole. After the reaming operation is completed, if you want to further deepen the previously drilled small-diameter drilled hole, you need to lift the drill and replace the reamer with a drill with a suitable size before lowering the drill to the bottom of the hole. Then drill down, and this process is undoubtedly time-consuming and laborious, which not only increases the auxiliary time for lifting the drill and changing the drill bit, but also reduces the operating efficiency of the drilling and reaming construction.

Utility model content

The technical problem to be solved by the utility model is to provide a drill-expansion integrated drilling tool embedded with a bionic nozzle, so as to solve the deficiencies of the prior art.

The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a drilling and expansion integrated drilling tool embedded with a bionic nozzle, which includes an impregnated diamond drill bit, a transition joint, a multi-stage reamer, and an impactor; the multi-stage reamer One end of the reamer is connected to one end of the transition joint through a threaded sealing connection, and the other end of the multi-stage reamer is connected to one end of the impactor through a threaded sealing connection; the impregnated diamond drill bit is arranged on The transition joint is away from one end of the multi-stage reamer; the multi-stage reamer includes a drill body and a cutting ring; the inside of the drill body is provided with a central channel that runs through the entire drill body; the cutting ring Set as multi-stage, the multi-stage cutting ring is arranged in the middle part of the drill body, and the cutting diameter of the multi-stage cutting ring decreases progressively along the direction of reaming drilling; It consists of a plurality of cutting units uniformly arranged in the circumferential direction of the body.

The beneficial effects of the utility model are: the utility model can be used to simultaneously implement two construction procedures of drilling and reaming in the rock and soil mass. It can simultaneously realize the drilling and reaming construction operation under the high-efficiency rotary cutting rock breaking mode of the torsion impactor combined with the multi-stage reamer and the impregnated diamond bit, or the impact of the hydraulic impactor combined with the multi-stage reamer and the impregnated diamond bit Drilling and reaming construction operations under the rotary rock crushing method; in addition, high-pressure (greater than 10MPa) jets ejected from several bionic nozzles and advanced nozzle outlets at high speed (greater than 40m/s) can be used to assist the multi-stage reamer respectively Advanced (pre) erosion with the impregnated diamond drill bit breaks the rock and soil around the hole wall and at the bottom of the hole.

Further: between the adjacent cutting units in each stage of the cutting ring, there is an inclined through hole for discharging the pressurized slurry that is continuously circulating inside the drill body in a positive circulation; at least one of the The outlet end of the through hole is embedded with a bionic nozzle.

Further: it also includes an advanced nozzle; inside the transition joint, there is a central slurry channel connected with the central channel of the drill bit body; one end of the advanced nozzle is connected to the screw thread on the inner wall surface in the middle of the central slurry channel , the other end of the leading nozzle extends into the central through hole of the diamond-impregnated drill bit.

Further: the middle part of the central slurry channel is provided with a limit step for restricting the screwing position of the leading nozzle when the leading nozzle is assembled with the thread on the inner wall surface of the middle part of the transition joint.

Further: the aperture diameter of the outlet of the advanced nozzle of the advanced nozzle is 5 to 20 mm smaller than the aperture of the outlet of the bionic nozzle of the bionic nozzle.

Further: the cutting unit includes a cutting tool, a steel body and an impregnated diamond strip; the steel body is fixed on the peripheral surface outside the drill body; the cutting tool is embedded on the steel body; the impregnated Diamond strips are arranged on the outside of the steel body.

Further: the multi-stage cutting ring is a secondary cutting ring close to the impactor and a primary cutting ring close to the transition joint; the distance between the primary cutting ring and the secondary cutting ring is 20 to 70cm .

Further: the bionic nozzle is integrally formed with the through-hole, or the bionic nozzle is fixed at the outlet end of the through-hole by threading, welding or interference fit.

Further: the included angle between the axis of the through hole and the axis of the drill body is 30° to 60°.

Further: the impactor is a torsional impactor or a hydraulic impactor.

Description of drawings

Figure 1-1 is a schematic diagram of the overall three-dimensional model of the drilling and expansion integrated drilling tool when the torsion impactor is connected;

Figure 1-2 is a schematic diagram of the overall three-dimensional model of the drilling and expansion integrated drilling tool when the hydraulic impactor is connected;

Figure 2-1 is a schematic diagram of the three-dimensional model of the separated parts of the drilling and expansion integrated drilling tool when the torsion impactor is connected;

Figure 2-2 is a schematic diagram of the three-dimensional model of the separated parts of the drilling and expansion integrated drilling tool when the hydraulic impactor is connected;

Figure 3-1 is an axonometric schematic diagram of the three-dimensional model of the main part of the multi-stage reamer;

Figure 3-2 is the front view of the three-dimensional model of the main part of the multi-stage reamer;

Figure 3-3 is a sectional view of the three-dimensional model of the main part of the multi-stage reamer;

Figure 4-1 is a schematic diagram of the three-dimensional model of the bionic nozzle;

Figure 4-2 is a sectional view of the three-dimensional model of the bionic nozzle;

Fig. 5 is an axonometric schematic diagram of a complete three-dimensional model of a multi-stage reamer after the bionic nozzle is embedded and fixed on the main part of the multi-stage reamer;

Figure 6-1 is an axonometric schematic diagram of the three-dimensional model after the transition joint and the advanced nozzle are assembled together;

Figure 6-2 is a sectional view of the three-dimensional model after the transition joint and the leading nozzle are assembled together;

Figure 6-3 is a sectional view of the three-dimensional model of the transition joint;

Figure 6-4 is a sectional view of the three-dimensional model of the leading nozzle;

Figure 7-1 is an axonometric schematic diagram of the three-dimensional model when the transition joint, the advanced nozzle and the impregnated diamond bit are assembled together;

Figure 7-2 is a sectional view of the three-dimensional model when the transition joint, the advanced nozzle and the diamond-impregnated drill bit are assembled together;

Fig. 8 is an axonometric schematic diagram of a three-dimensional model of a diamond-impregnated drill bit.

In the accompanying drawings, the parts represented by each label are as follows:

1. Diamond impregnated drill bit; 11. First connecting thread; 2. Leading nozzle; 21. Leading nozzle inlet; 22. Leading nozzle outlet; 23. Second connecting thread; 3. Transition joint; 31. Fifth connecting thread; 32. The third connection thread; 33. The fourth connection thread; 34. The limit step; 4. The first-level cutting ring; 41. The sixth connection thread; 42. The first-level cutting unit; 421. The first-level cutting tool; 422. Class I steel body; 423, Class I diamond impregnated strip; 43, Class II through hole; 5, Class II cutting ring; 51, Class II cutting unit; 511, Class II cutting tool; 512, Class II steel body; 513 , secondary impregnated diamond strip; 52, secondary through hole; 53, seventh connecting thread; 6, torque impactor; 7, hydraulic impactor; 8, bionic nozzle; 81, bionic nozzle inlet; 82, bionic nozzle Exit; 83. Bionic ring groove.

Detailed ways

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Fig. 1-1, Fig. 1-2, Fig. 2-1, and Fig. 2-2, the drilling and expansion integrated drilling tool with embedded bionic nozzle involved in the utility model follows the sequence from bottom to top , consisting of an impregnated diamond drill bit 1, an advanced nozzle 2, a transition joint 3, a multi-stage reamer and an impactor in turn, and they are connected by a thread seal, and the utility model is used to implement the grouting hole, the anchor rod/anchor cable hole , Drilled cast-in-place pile holes, and drilling and reaming of exploration holes or production holes for natural gas hydrate, oil shale, shale gas, oil/natural gas, groundwater, etc., the slurry circulation mode is positive circulation. The torsion impactor 6 or hydraulic impactor 7 can be selected as the impactor, and the connected torsional impactor 6 or hydraulic impactor 7 is any type with appropriate specifications. The utility model adopts the impregnated diamond drill bit 1 to drill, but it is not limited thereto, and other types or types of drill bits with a central through hole, such as cemented carbide drill bits, can also be used.

If the torsion impactor 6 is connected to implement grouting holes, anchor rod/cable holes, bored pile holes, and exploration holes or production holes for natural gas hydrate, oil shale, shale gas, oil/natural gas, groundwater, etc. For drilling and reaming operations, the torsion impactor 6 can continuously provide additional impact torsion for the entire set of drilling tools in line with the rotation direction of the drilling tool. connected, so that it can be used when implementing grouting holes, bolt/cable holes, bored pile holes, and exploration or production holes for gas hydrate, oil shale, shale gas, oil/gas, groundwater, etc. During the drilling and reaming operation, the multi-stage reamer and the impregnated diamond bit 1 are powered by the drilling rig placed on the surface to drive the whole set of drilling tools to rotate and provide appropriate drilling pressure for drilling and reaming operations. They provide an additional impact torsion effect, which can not only effectively enhance the rotary cutting rock breaking ability of the multi-stage reamer on the rock and soil surrounding the wall of the existing small-diameter drilled hole, but also enhance the continuous downward drilling of the impregnated diamond drill bit 1 It can rotate and cut rock and crush the rock and soil at the bottom of the hole while advancing, and at the same time, it can also reduce the power consumption of drilling rigs and other equipment to a certain extent.

If the hydraulic impactor 7 is connected to implement grouting holes, anchor rod/cable holes, bored pile holes, and exploration holes or production holes for natural gas hydrate, oil shale, shale gas, oil/natural gas, groundwater, etc. During the drilling and reaming operation, the hydraulic impactor 7 can continuously provide the axial reciprocating impact load for the whole set of drilling tools. It can be used in the implementation of grouting holes, bolt/cable holes, bored pile holes, and exploration holes or production holes for natural gas hydrate, oil shale, shale gas, oil/natural gas, groundwater, etc. In the process of drilling and reaming, the drilling and reaming operation of impact rotary rock crushing method can be realized, which can greatly improve the efficiency of drilling and reaming of rocks, and at the same time, it can also play the role of releasing the jamming of drilling tools to a certain extent.

As shown in Fig. 6-1, Fig. 6-2, Fig. 6-3, Fig. 6-4, Fig. 7-1, Fig. 7-2, and Fig. 8, the impregnated diamond drill bit 1 is a commonly used diamond impregnated bit. It can also be other types or types of drill bits such as hard alloy drill bits through the center. The transition joint 3 is mainly composed of a third connecting thread 32 , a fourth connecting thread 33 , a fifth connecting thread 31 and a limit step 34 . The impregnated diamond drill bit 1 is connected to the third connecting thread 32 through the first connecting thread 11 . The leading nozzle 2 is mainly composed of a leading nozzle inlet 21 , a leading nozzle outlet 22 and a second connecting thread 23 . The second connecting thread 23 is connected with the fourth connecting thread 33, and the limit step 34 is located at the end of the fourth connecting thread 33, which plays the role of limiting the screwing position of the leading nozzle 2 when the leading nozzle 2 is assembled with the transition joint 3, so that the two Reliable assembly through threads. After the leading nozzle 2 and the transition joint 3, and between the transition joint 3 and the diamond-impregnated drill bit 1 are all connected by thread sealing, the end face of the leading nozzle outlet 22 is at this time far from the bottom lip surface of the diamond-impregnated drill bit 1 8 to 20cm (this distance is the distance from the end face of the leading nozzle outlet 22 to the bottom of the hole when the utility model is used for drilling and reaming operations).

As shown in Figure 3-1, Figure 3-2, and Figure 3-3, a multi-stage reamer is shown. The multi-stage reamer in the utility model only adopts a two-stage structure, which can be designed according to actual needs It is a structure of more than two levels. Multi-stage reamers can achieve the following purposes:

1. The primary cutting ring 4 with small diameter at the front end can take the lead in reaming and drilling into and out of a hole with a relatively small diameter. This hole can play the role of a pilot hole and also have the effect of guiding the drilling tool.

2. Since the reaming drilling will eventually be drilled into a certain large-diameter borehole, when the multi-stage reamer designed by the utility model is used for reaming drilling, it can be understood that the reaming drilling will eventually achieve The large-diameter drilling is decomposed into several times (the number of reaming drilling is the same as the number of stages of the multi-stage reamer) and the integration of reaming drilling is carried out separately. This method can effectively reduce the time of one reaming drilling. The energy consumption of drilling equipment can be reduced, and the efficiency of reaming drilling can also be improved.

3. The use of multi-stage reamers can effectively increase the free surface for cutting and breaking the rock and soil around the hole wall of the existing small-diameter borehole when the reamer is reaming, so that the reamer's reaming drilling Efficiency has been significantly improved.

As shown in Figure 3-1, Figure 3-2, and Figure 3-3, it is a multi-stage reamer, which includes a drill body that runs through the center (a central channel that runs through the entire drill body is provided inside the drill body). The upper end of the drill body is provided with a seventh connecting thread 53 , and the lower end of the drill body is provided with a sixth connecting thread 41 . The middle part of the drill body is provided with two stages of cutting rings along the circumference, a primary cutting ring 4 and a secondary cutting ring 5. The cutting diameters of the two-stage cutting rings decrease along the direction of reaming drilling, that is, the cutting diameter of the primary cutting ring 4 close to the transition joint 1 is smaller than the cutting diameter of the secondary cutting ring 5 far away from the transition joint. The cutting ring of each stage is provided with a plurality of cutting units (first-stage cutting unit 42, second-stage cutting unit 51), and the plurality of cutting units in the cutting ring of each stage are evenly distributed in the drill body along the circumferential direction. The plurality of cutting units in each stage of the cutting ring form a circular ring around the drill bit body.

It should be noted that: the primary cutting ring 4 and the secondary cutting ring 5 in the multi-stage reamer involved in the utility model can be processed on the same drill body structure at the same time, or can be processed into two separate After the drill body, the two are connected together by thread or other means. There is a certain distance between the primary cutting ring 4 and the secondary cutting ring 5, which can be considered as 20 to 70 cm. The utility model is described by taking the primary cutting ring 4 and the secondary cutting ring 5 processed on the same drill body as an example.

As shown in FIG. 5 , both the primary cutting ring 4 and the secondary cutting ring 5 are the main structures for cutting and breaking the rock and soil mass, and their centers are all through-shaped structures. Among them, the primary cutting ring 4 includes a plurality of primary cutting units 42, a plurality of primary through holes 43 and a plurality of primary bionic nozzles 8; a plurality of primary through holes 43 are respectively arranged in two adjacent Between the primary cutting units 42 ; a primary bionic nozzle 8 is embedded in the outlet end of each primary through hole 43 . The secondary cutting ring 5 includes a plurality of secondary cutting units 51, a plurality of secondary through-holes 52 and a plurality of secondary bionic nozzles 8, and a plurality of secondary through-holes 52 are respectively arranged in two adjacent secondary Between the cutting units 51 ; a secondary bionic nozzle 8 is embedded in the outlet end of each secondary through hole 52 .

It should be noted that the structural type of the first-level bionic nozzle 8 embedded in the outlet end of the first-level through hole 43 and the second-level bionic nozzle 8 embedded in the outlet end of the second-level through hole 52 are the same, but their dimensions It should be suitable for the diameter of the corresponding through hole.

As shown in Figure 4-1 and Figure 4-2, the middle part of the bionic nozzle (first-level and second-level bionic nozzle 8) is provided with an inner cavity, and several bionic ring grooves 83 are arranged on the inner wall of the inner cavity. , preferably: the inner wall surface of the inner cavity is evenly provided with several bionic annular grooves 83 according to a certain distance; one end of the bionic nozzle 8 is provided with a bionic nozzle inlet 81 communicating with the inner cavity, and the bionic nozzle 81 is connected to the inner cavity. The other end of the nozzle 8 is provided with a bionic nozzle outlet 82 communicating with the inner cavity, and the diameter of the bionic nozzle inlet 81 is larger than that of the bionic nozzle outlet 82 .

As shown in Figure 5, the lower part of the primary cutting ring 4 is connected to the transition joint 3 through the sixth connecting thread 41; the middle part is the main part of the ring-shaped reamer, which mainly consists of several primary cutting units 42 and primary through holes. 43 are uniformly distributed along the circumferential direction, wherein the first-level cutting unit 42 is the main structure of rock and soil around the wall of the existing small-diameter drilled hole (drilled by the impregnated diamond drill bit 1) for cutting and breaking, and the first-level cutting unit 42 is formed by the first-level cutting unit 42. A cutting tool 421, a primary steel body 422 and a primary impregnated diamond strip 423 are formed. The first-level cutting tool 421 is embedded in the first-level steel body 422 to form the main body of the cutting unit. The arrangement of the first-level cutting tool 421 used in the utility model depends on the direction of the drilling tool rotation during reaming drilling, that is, the first-level The direction of the front (cutting surface) of the cutting tool 421 should be consistent with the direction in which the drilling tool rotates. The first-level impregnated diamond strip 423 is embedded and fixed on the outside of the first-level steel body 422, and is used for maintaining the diameter of the large-diameter drilled hole formed after the reaming drilling during reaming drilling. The primary through-holes 43 are evenly arranged between two adjacent primary cutting units 42 in the circumferential direction, the primary through-holes 43 are through-shaped oblique holes of 30° to 60°, and the number of the primary through-holes 43 is the same as The number of primary cutting units 42 is the same, and the number of primary through holes 43 can also be set to be smaller than the number of primary cutting units 42 as required. The first-level bionic nozzles 8 are embedded and fixed at the outlet end of the first-level through-holes 43 by threading, welding or interference fit, and the number of the first-level bionic nozzles 8 is consistent with the number of the first-level through-holes 43 . It may be considered that the primary cutting tool 421 is made of PDC material, but it is not limited thereto, and may also be made of CBN, Slavujci, TSP, PCD and other materials suitable for cutting and breaking rock and soil.

The lower end surface of the secondary cutting ring 5 is 20 to 70 cm away from the upper end surface of the primary cutting ring 4, and the main part of the middle part is a ring structure, and its diameter is larger than that of the primary cutting ring 4. The specific diameter difference needs to be based on the final Depending on the diameter of the drilled hole to be reamed, it can be considered that the diameter (outer diameter) of the secondary cutting ring 5 is set to twice the diameter (outer diameter) of the primary cutting ring 4 . The central body part of the secondary cutting ring 5 is mainly composed of several secondary cutting units 51 and secondary through-holes 52 uniformly distributed along the circumferential direction, wherein the secondary cutting units 51 are for cutting and breaking existing small-diameter boreholes (by impregnated diamond drill bits) 1 drilling, and drilled through primary cutting ring 4 reaming), the main structure of the rock and soil around the hole wall, which consists of secondary cutting tool 511, secondary steel body 512 and secondary impregnated diamond strip 513 Composition, the secondary cutting tool 511 is embedded in the secondary steel body 512 to form the main body of the cutting unit. The arrangement of the secondary cutting tool 511 used in the utility model depends on the direction of the drilling tool rotation during reaming drilling, that is, The direction of the front (cutting surface) of the secondary cutting tool 511 should be consistent with the direction of drilling tool rotation. The secondary impregnated diamond strip 513 is embedded and fixed on the outside of the secondary steel body 512 and is used for keeping the diameter of the large-diameter drilled hole formed after the reaming drilling during reaming drilling. The secondary through-holes 52 are evenly arranged between two adjacent secondary cutting units 51 in the circumferential direction. The secondary through-holes 52 are through-shaped oblique holes of 30° to 60°. The number of the secondary through-holes 52 is the same as The number of secondary cutting units 51 is the same, and the number of secondary through holes 52 can also be set to be smaller than the number of secondary cutting units 51 as required. The secondary bionic nozzles 8 are embedded and fixed at the outlet ends of the secondary through holes 52 by threading, welding or interference fit, and the number of the secondary bionic nozzles 8 is consistent with the number of the secondary through holes 52 . It may be considered that the secondary cutting tool 511 is made of PDC material, but it is not limited thereto, and may also be made of CBN, Slavujci, TSP, PCD and other materials suitable for cutting and breaking rock and soil.

The upper part of the secondary cutting ring 5 is connected with the torsional impactor 6 or the hydraulic impactor 7 through the seventh connecting thread 53 . When the drilling rig provides suitable rotary torque and reaming drilling pressure, the primary cutting ring 4 and the secondary cutting ring 5 are driven by the drill string to rotate at high speed and cut and break the rock and soil around the wall of the existing small-diameter drilled hole. body to achieve reaming drilling, and at the same time, the pressurized grout that is continuously circulating in a positive circulation mode (it is best to use low-solid or no-solid mud. Among them, low-solid mud: refers to the clay content (by weight) <10 %, or refers to mud with clay content (by volume) <4%; solid-free mud: refers to a dispersion system prepared by mixing organic polymers and water only without adding clay.) from embedding in The bionic nozzle inlets 81 of several bionic nozzles 8 on the primary cutting ring 4 and the secondary cutting ring 5 flow into the inner cavity, and are ejected at high speed by the bionic nozzle outlet 82 to form a high-pressure jet, which can crush the rock and soil around the hole wall to be broken. Advance (pre-) erosion and crushing of the body to realize the reaming drilling of the auxiliary primary cutting ring 4 and the secondary cutting ring 5, which can effectively improve the operating efficiency of reaming drilling of the rock and soil body.

Working principle of the utility model:

When the drilling rig placed on the surface provides suitable rotary torque and WOB, the impregnated diamond bit 1, the primary cutting ring 4 and the secondary cutting ring 5 rotate at a high speed under the drive of the drill string, and are respectively positioned at the bottom of the hole and the The rock and soil around the hole wall are rotary cut and crushed to achieve drilling into the hole (based on the drilling of the rock and soil at the bottom of the hole based on the impregnated diamond drill bit 1) and the reaming of the existing small diameter hole. (Based on the reaming of the rock and soil around the hole wall by the primary cutting ring 4 and the secondary cutting ring 5), there is grouting fluid (preferably low solid phase or no solid phase mud is used. Wherein, Low solid phase mud: refers to mud with clay content (by weight) < 10%, or refers to mud with clay content (by volume) < 4%; no solid phase mud: refers to no clay, only polymerized by organic polymers It is a dispersion system prepared by mixing material and water.) Under the reciprocating suction of the mud pump placed on the surface, it is in the form of positive circulation (pressurized slurry flows from the surface to the bottom of the hole along the central channel of the drill string, and then flows from the drill pipe to the bottom of the hole. The annular gap between the column and the hole wall returns to the surface) is continuously circulating, and the pressurized slurry flows downward from the upper part of the drill string until it reaches the leading nozzle inlet 21 of the leading nozzle 2 after being pumped out from the mud pump. The cross-sectional area (flow section) at the step 34 is much smaller than the cross-sectional area (flow section) of the central channel of the drill string, and the aperture of the leading nozzle outlet 22 is also smaller than the aperture of the bionic nozzle outlet 82 by 5 to 20mm (the diameter of the entrance 81 of the bionic nozzle and the inclined primary through-hole 43 and secondary through-hole 52 processed on the multi-stage reamer are larger), so there will be a certain pressure when the grout flows here. When the pressurized grout continues to flow to the leading nozzle outlet 22, it is ejected at a high speed to form a high-pressure jet with relatively concentrated energy, which can realize advanced (pre) erosion of the rock and soil mass at the bottom of the hole The crushing function can effectively assist the diamond-impregnated drill bit 1 to crush the rock and soil at the bottom of the hole, thereby effectively improving the drilling efficiency of the hole. At the same time, the hole bottom diffuse flow formed by the high-pressure jet can also effectively improve the hole. The removal of bottom cuttings and the effect of cooling the impregnated diamond drill bit 1. If the flow rate of the continuously circulating pressurized slurry is large enough, when it flows through the limit step 34 and the outlet of the leading nozzle 22, the fluid (pressurized slurry) will be caused by the shrinkage of the central channel cross-sectional area (flow section). The "throttling and blocking effect", part of the grouting fluid is ejected from the leading nozzle outlet 22 at high speed to form a high-pressure jet, and the other part of the grouting fluid that is too late to be sprayed will continue to accumulate in the central channel of the drilling tool. When the liquid level of the grouting fluid When the first-level through-hole 43 and the second-level through-hole 52 are respectively reached, the pressurized grout will flow into the first-level through-hole 43 and the second-level through-hole 52 respectively, and be sprayed at a high speed from the bionic nozzle outlet 82 of several bionic nozzles 8. A high-pressure jet is formed, which can carry out advanced (pre) erosion and crushing of the rock and soil around the wall of the existing small-diameter borehole, so as to respectively assist the primary cutting ring 4 and the secondary cutting ring 5 on the existing small-diameter drill The reaming drilling of the rock and soil around the hole wall, and the diffuse flow formed by the high-pressure jet can also effectively improve the removal of cuttings and the effect of cooling the primary cutting tool 421 and the secondary cutting tool 511.

The beneficial effects of the utility model:

Utilizing the utility model, two construction operation procedures of drilling and reaming can be implemented simultaneously in the rock and soil mass. It can simultaneously realize the drilling and reaming construction operation under the high-efficiency rotary cutting rock breaking mode of the torsion impactor combined with the multi-stage reamer and the impregnated diamond bit, or the impact of the hydraulic impactor combined with the multi-stage reamer and the impregnated diamond bit Drilling and reaming construction operations under the rotary rock crushing method; in addition, the high-pressure jets ejected at high speed from several bionic nozzles and advanced nozzle outlets can be used to assist the multi-stage reamer and the impregnated diamond bit to drill the existing small diameter. The rock and soil around the hole wall and at the bottom of the hole are subjected to advanced (pre) erosion and crushing.

To sum up, the utility model can simultaneously realize torsion impactor (providing continuous impact torsion force for the entire set of drilling tools)/hydraulic impactor (providing axial reciprocating impact load action for the entire set of drilling tools) + multi-stage expansion Hole tool (realize the multi-stage reaming operation of small-diameter drilling) + several bionic nozzles (when the grouting fluid is continuously circulated through the bionic nozzle in a positive circulation mode, a high-pressure jet can be formed, and the jet can be used for the desired The broken rock and soil around the wall of the existing small-diameter borehole are pre-eroded and broken, thereby assisting the multi-stage reamer to carry out reaming drilling, which can effectively improve the operating efficiency of reaming drilling) + advanced nozzle (When the pressure grouting fluid flows through the advanced nozzle continuously in a positive cycle, a high-pressure jet can be formed, which can carry out advanced (pre) erosion and crushing of the rock and soil at the bottom of the hole to be broken, thereby assisting the impregnated diamond bit to drill into the hole, effectively improving the operation efficiency of drilling into the hole) + impregnated diamond drill bit (under the action of the drilling rig placed on the surface to drive the whole set of drilling tools to rotate at high speed and apply appropriate drilling pressure to the rock and soil at the bottom of the hole) The multi-process drilling and reaming method coupled with rotary cutting and crushing, and then realizes drilling into holes) is bound to effectively reduce the construction of grouting holes, bolt/cable holes, bored pile holes, and natural gas in rock and soil. Auxiliary time, labor intensity and energy consumption of drilling equipment for drilling and reaming operations in exploration holes or production holes for hydrates, oil shale, shale gas, oil/natural gas, groundwater, etc., and can also simplify drilling and reaming The technological process of construction can effectively improve the operation efficiency of drilling and reaming construction.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A drilling and expanding integrated drilling tool embedded with a bionic nozzle, characterized in that: it includes an impregnated diamond drill bit, a transition joint, a multi-stage reamer, and an impactor; one end of the multi-stage reamer is connected to the One end of the transition joint is connected through a threaded seal, and the other end of the multistage reamer is connected with one end of the impactor through a threaded seal; the impregnated diamond drill bit is arranged at the transition joint away from the One end of a multi-stage reamer; the multi-stage reamer includes a drill body and a cutting ring; the inside of the drill body is provided with a central channel that runs through the entire drill body; the cutting ring is set to multi-stage, multi-stage The cutting ring is arranged in the middle of the drill body, and the cutting diameter of the multi-stage cutting ring decreases along the direction of reaming drilling; Composed of multiple cutting units. 2. According to claim 1, a drill-expansion integrated drilling tool with embedded bionic nozzle is characterized in that: between the adjacent cutting units in each stage of the cutting ring, there is a device for inserting the drill body There are oblique through holes through which the pressurized slurry is continuously circulated in the positive circulation mode; at least one of the through holes has a bionic nozzle embedded in the outlet end. 3. According to claim 2, a drill-expansion integrated drilling tool with embedded bionic nozzle is characterized in that: it also includes a leading nozzle; the inside of the transition joint is provided with a center that communicates with the central channel of the drill body. Slurry channel; one end of the leading nozzle is in sealing connection with the thread on the inner wall surface in the middle of the central slurry channel, and the other end of the leading nozzle extends into the central through hole of the diamond-impregnated drill bit. 4. According to claim 3, a drill-and-expansion integrated drilling tool with embedded bionic nozzles is characterized in that: the middle part of the central slurry channel is provided with an inner wall surface for the leading nozzle and the middle part of the transition joint. A limit step that limits the screwing position of the leading nozzle during thread assembly. 5. According to claim 3, a drilling and expansion integrated drilling tool with a bionic nozzle embedded, is characterized in that: the aperture of the leading nozzle outlet of the leading nozzle is 5 to 5 20mm. 6. According to claim 1, a drilling and expansion integrated drilling tool embedded with a bionic nozzle is characterized in that: the cutting unit includes a cutting tool, a steel body and a diamond-impregnated strip; the steel body is fixed on the The outer peripheral surface of the drill bit body; the cutting tool is embedded and fixed on the steel body; the impregnated diamond strip is arranged on the outer side of the steel body. 7. According to any one of claims 2 to 6, a drilling and expansion integrated drilling tool with embedded bionic nozzles is characterized in that: the multi-stage cutting ring is a secondary cutting ring close to the impactor and close to the impactor. The primary cutting ring of the transition joint; the distance between the primary cutting ring and the secondary cutting ring is 20 to 70 cm. 8. According to claim 7, a drill-and-expansion integrated drilling tool embedded with a bionic nozzle is characterized in that: the bionic nozzle is integrally formed with the through hole, or the bionic nozzle is threaded, welded or interfering A matching fixing method is embedded and fixed at the outlet end of the through hole. 9. A drilling and expansion integrated drilling tool with embedded bionic nozzle according to claim 7, characterized in that: the angle between the axis of the through hole and the axis of the drill body is 30° to 60° . 10 . A drill-expanding integrated drilling tool with a bionic nozzle embedded according to claim 7 , wherein the impactor is a torsional impactor or a hydraulic impactor. 11 .