CN214787189U - Lateral drilling tool driven rigidly - Google Patents
Lateral drilling tool driven rigidly Download PDFInfo
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- CN214787189U CN214787189U CN202120550986.5U CN202120550986U CN214787189U CN 214787189 U CN214787189 U CN 214787189U CN 202120550986 U CN202120550986 U CN 202120550986U CN 214787189 U CN214787189 U CN 214787189U
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Abstract
The utility model discloses a rigid-driving lateral drilling tool, which comprises a driving section string, a pressure-bearing hose and a drill bit; the driving section series comprises a plurality of driving sections, each driving section comprises a torque transmission structure, and the driving section series is formed by connecting the plurality of driving sections in series through the torque transmission structures; at least one section of pressure-bearing hose is sleeved outside the driving section serial; one end of the driving section serial is connected with the drill bit, the other end of the driving section serial is connected with a rotary driving device, and the rotary driving device transmits drilling power to the drill bit through the driving section serial; the drill bit comprises a communicating structure and/or a nozzle; and a gap is arranged between the driving section serial and the pressure-bearing hose, a through space is arranged in the driving section serial, and/or a through structure is arranged outside the driving section serial, so that the gap and/or the through space and/or the through structure and the drill bit form a channel for the circulation medium of the drilling well to flow.
Description
Technical Field
The utility model relates to a side direction drilling technical field specifically is a rigidity driven side direction drilling tool.
Background
The radial drilling technology is widely applied to the old well reconstruction and the recovery factor improvement, a high-pressure hose with a jet flow drill bit is generally placed under a coiled tubing, and the jet flow drill bit and the high-pressure hose transversely enter a stratum to drill a hole through a steering gear. In this technique, the radius of the micro-branch bore is less than 1 meter, the diameter of the drill bit is typically between 0.75 and 3 inches, and steering can be accomplished even inside the casing. In the prior art, a radial drilling drill bit realizes drilling by means of jet flow, and the problems of poor rock breaking effect, tortuous well bores, short footage of small branch well bores and the like exist, so that radial ultra-deep holes are difficult to realize. Documents and experiments show that the well wall formed by the rock breaking through the high-pressure water jet injection is irregular, and the drilling efficiency of the rock breaking through the jet is low; in addition, high-pressure water jet drilling is performed since the water jet radial drilling technology, so that the drilling can be realized only by connecting a coiled tubing suitable for conveying high-pressure fluid in series with a high-pressure hose, the drilling of radial branch wells can be realized only in the diameter, and the drilling device is difficult to be applied to highly deviated wells and horizontal wells; the biggest limitation of this technique is that the high-pressure hose in the minute branch hole cannot rotate, and thus the high-pressure hose in the minute branch hole is hard to advance due to the axial frictional resistance. The foregoing further limits the efficiency of the technique and the footage of the wellbore.
Accordingly, there is a need for a rigidly driven lateral drilling tool that addresses the problems set forth in the background above.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the utility model provides a following technical scheme: a rigidly driven lateral drilling tool comprises a driving joint string, a pressure-bearing hose and a drilling section; the driving section serial is formed by connecting a plurality of driving sections in series through a torque transmission structure;
at least one section of pressure-bearing hose is sleeved outside the driving section serial string, can synchronously rotate with the driving section serial string, and can convey a drilling circulation medium;
one end of the driving section string is connected with the drilling section, the other end of the driving section string is connected with the rotary driving device, and the rotary driving device transmits drilling power to the drilling section and/or drives the pressure-bearing hose to rotate together through the driving section string so as to convert the direction of friction force from the axial direction to the tangential direction and achieve the purpose of reducing the axial friction resistance between the pressure-bearing hose in the micro branch well bore and the well wall; it should be noted that the rotary drive may be a motor directly driven or driven by the drill string.
The drilling section comprises a drill bit comprising water holes and/or nozzles for discharging drilling circulation medium to the annulus and/or for breaking rock in the form of jets;
and a gap is arranged between the driving section serial and the pressure-bearing hose, a through space is arranged in the driving section serial, and/or a through structure is arranged outside the driving section serial, so that the gap and/or the through space and/or the through structure and the drill bit form a channel for the circulation medium of the drilling well to flow.
The pressure-bearing hose need not to cover completely the drive festival tandem, the pressure-bearing hose covers the overwhelming majority can play during the drive festival tandem the utility model discloses an effect.
Further, preferably, the device also comprises a steering gear, an anchor and a feeding pipe column, wherein the feeding pipe column, the steering gear and the anchor are fixedly connected from top to bottom;
the rotary driving device comprises a driving drill string, one end of the driving joint string is connected with the drill bit, and the other end of the driving joint string penetrates through the steering gear to be connected with the driving drill string;
the drive string is provided rotational power by a rotary table or top drive at the wellhead.
Preferably, the pressure-bearing hose is fixedly connected with the driving section tandem, so that the driving section tandem can drive the pressure-bearing hose to rotate together, the direction of the friction force applied to the pressure-bearing hose is mainly converted from the axial direction to the tangential direction in the drilling process, and the axial friction force applied to the pressure-bearing hose and the driving section tandem is reduced.
Further, as the preferred, still include nearly drill bit motor, nearly drill bit motor sets up in the drill bit rear, nearly drill bit motor communicates in the pressure-bearing hose inside, and the drilling circulation medium in the pressure-bearing hose can pass through nearly drill bit motor drive drill bit is rotatory for broken rock creeps into forward.
Further, preferably, the torque transmission structure is a universal joint.
Further, preferably, the torque transmission structure is a hinge type universal joint.
Preferably, the outer diameter of the drill bit is 10-75 mm, the outer diameter of the pressure-bearing hose is 10-70 mm, and the outer diameter of the driving section string is 6-60 mm.
Further preferably, the drive node is made of a titanium alloy material.
Further, preferably, the system further comprises an attitude measurement module for measuring the attitude of the position close to the drill bit.
Preferably, a plurality of sections of pressure-bearing hoses are sleeved on the outer side of the driving joint serial, and the two adjacent sections of pressure-bearing hoses are connected with each other in a sealing manner by connecting the driving joints.
A method of drilling a rigidly driven lateral drilling tool, comprising the steps of:
1) running a steering gear and an anchor in the main well bore by using a feeding pipe column;
2) hanging an anchor on a seat;
3) running a rigidly driven lateral drilling tool through a drive string;
4) the rotary table or the top drive drives the rigidly driven lateral drilling tool to rotate and drill through the driving drill string;
and the drilling circulation medium is introduced into the pressure-bearing hose and flows through the gap and/or the through space and/or the through structure to reach the drill bit, and then returns through the annular space of the pressure-bearing hose and the hole, or the drilling circulation medium reaches the drill bit from the annular space of the pressure-bearing hose and the hole and then flows through the gap and/or the through space and/or the through structure through the drill bit to return.
Compared with the prior art, the utility model provides a rigidity-driven side direction drilling tool possesses following beneficial effect:
the utility model discloses a set up drive festival serial in the pressure-bearing hose, carry the drilling fluid through the pressure-bearing hose, together rotatory through drive festival serial transmission moment of torsion driving bit and pressure-bearing hose, the effectual weight on bit that has transmitted to reduced the production of holding in the palm the pressure phenomenon by a wide margin, broken rock is effectual, and is favorable to producing the well of rule. In addition, because the drill bit has a power source, the drill bit can break rock without high-pressure water jet, so that the rock breaking efficiency is improved, and the pressure bearing grade of the whole pipeline is reduced. The utility model discloses set up the drive festival tandem in the inside further size that has reduced the drive festival tandem of pressure-bearing hose, make the drive festival tandem can transmit power under bigger bending condition, makes its camber and pressure-bearing hose match, further makes its demand that adapts to radial drilling. The utility model discloses can realize turning radius within 1 meter or turning radius at the small radial branch well probing of sleeve pipe diameter within range.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a partially enlarged schematic view of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the middle driving node and the pressure-bearing hose of the present invention;
FIG. 4 is a schematic view of the installation of the middle connection driving section of the present invention;
FIG. 5 is a schematic structural diagram of another embodiment;
in the figure: 1. a drill bit; 2. a pressure-bearing hose; 3. a driving section; 31. a torque transmitting structure; 4. driving the drill string; 41. a gap; 42. a through space; 43. a through structure; 5. an attitude measurement module; 6. a diverter; 7. an anchor; 8. feeding the pipe into the pipe column; 11. a nozzle; 12. a near bit motor; 13. and connecting the driving section.
Detailed Description
Referring to fig. 1 to 5, in an embodiment of the present invention, a rigid-driving lateral drilling tool includes a driving member string, a pressure-bearing hose 2, and a drill bit 1; the driving section string comprises a plurality of driving sections 3, the driving sections comprise torque transmission structures 31, and the driving section string is formed by connecting the plurality of driving sections 3 in series through the torque transmission structures 31;
at least one section of pressure-bearing hose 2 is sleeved outside the driving section serial and can convey a drilling circulation medium;
one end of the driving joint serial is connected with the drill bit 1, the other end of the driving joint serial is connected with a rotary driving device, and the rotary driving device transmits drilling power to the drill bit 1 and/or drives the pressure-bearing hose 2 to rotate together through the driving joint serial;
the drill bit 1 comprises a water hole and/or a nozzle 11;
a gap 41 is arranged between the driving joint string and the pressure-bearing hose 2, a through space 42 is arranged inside the driving joint string, and/or a through structure 43 is arranged outside the driving joint string, so that the gap 41 and/or the through space 42 and/or the through structure 43 and the drill bit 1 form a channel for a drilling circulation medium to flow, the drilling circulation medium is introduced into the pressure-bearing hose 2, flows through the gap 41 and/or the through space 42 and/or the through structure 43 to reach the drill bit 1, and then returns through the annular space of the pressure-bearing hose and the hole, or the drilling circulation medium reaches the drill bit 1 through the annular space of the pressure-bearing hose 2 and the hole, then flows through the gap 41 and/or the through space 42 and/or the through structure 43 to return through the drill bit 1.
When used for laterally drilling a branch well in the inner part of a well hole, the lateral drilling device also comprises a steering gear 6, an anchor 7 and a feeding pipe column 8, wherein the feeding pipe column 8, the steering gear 6 and the anchor 7 are fixedly connected from top to bottom;
the rotary driving device comprises a driving drill string 4, one end of the driving joint string is connected with the drill bit 1, and the other end of the driving joint string is connected with the driving drill string 4 through a steering gear 6;
it should be noted that in general operation, the drive string is provided with rotational power by a rotary table or top drive at the wellhead.
As a preferred embodiment, the pressure-bearing hose 2 is fixedly connected to the driving node string, so that the driving node string can drive the pressure-bearing hose 2 to rotate together, so that the direction of the friction force applied to the pressure-bearing hose is mainly changed from the axial direction to the tangential direction in the drilling process, and the axial friction force applied to the pressure-bearing hose and the driving node string is reduced. The friction force along the hole axis direction, which is applied to the lateral drilling tool driven by rigidity in the running process along the hole axis direction, can be greatly reduced, and the resistance of the pressure-bearing hose when the pressure-bearing hose passes through the steering gear can be greatly reduced. It should be noted that, the specific fixing manner may be an adhesive connection, a threaded connection, a key-slot connection, or an interference fit connection. For example, the outer wall of the driving joint serial is bonded with the inner wall of the pressure-bearing hose 2, or the diameter of the outer wall of the driving joint serial is slightly larger than that of the inner wall of the pressure-bearing hose 2, so that when the pressure-bearing hose 2 is sleeved outside the driving joint serial, the driving joint serial is connected with the pressure-bearing hose 2 in an interference fit manner.
As another embodiment, as shown in fig. 5, a near-bit motor 12 is further included, the near-bit motor 12 is disposed behind the drill bit 1, the near-bit motor 12 is communicated with the inside of the pressure-bearing hose 2, and the drilling circulation medium in the pressure-bearing hose 2 can drive the drill bit to rotate through the near-bit motor 12 for breaking rock and drilling forward. The near bit motor may specifically be an electric motor or a turbine motor. In this embodiment, the near-bit motor is a small-sized turbine motor, the small-sized turbine motor includes a stator housing and a rotor, the stator housing of the small-sized turbine motor is fixedly connected with the pressure-bearing hose 2 and is communicated with the inside of the pressure-bearing hose, and the rotor of the small-sized turbine motor is fixedly connected with the bit and can drive the bit to rotate.
In the present embodiment, the torque transmission structure 31 is a universal joint. Specifically, the universal joint includes, but is not limited to, a cross joint, a hooke joint, and a rzeppa joint, and in addition, the universal joint may be a joint formed by a hinge joint and a torque transmission structure.
Specifically, the torque transmission structure 31 is a hinge type universal joint, and the hinge type universal joint can transmit axial force to assist in transmitting bit pressure and/or assist in driving the pressure-bearing hose 2 to advance.
In the embodiment, the optimal outer diameter of the drill bit 1 is 20-60 mm, the outer diameter of the pressure-bearing hose 2 is 15-55 mm, and the outer diameter of the driving section string is 10-45 mm;
and the outer diameter of the drill bit 1 is larger than that of the pressure-bearing hose 2, and the inner diameter of the pressure-bearing hose 2 is larger than that of the driving joint string.
In a preferred embodiment, the driving node 3 is made of titanium alloy, which has the advantages of reducing weight to the maximum extent, facilitating the self-backward forward transmission of the weight on bit or facilitating the forward drilling of the rigidly driven lateral drilling tool while ensuring the structural strength.
In addition, the attitude measurement module 5 is also included for measuring the attitude of the drill bit 1.
Further, as shown in fig. 4, a plurality of sections of pressure-bearing hoses are sleeved outside the driving joint string, and two adjacent sections of pressure-bearing hoses are hermetically connected by the connecting driving joint 13, at this time, the driving joint string can also be regarded as a plurality of sections, in addition, the connecting driving joint can also connect two adjacent sections of driving joint strings in series to form a whole, and the connecting driving joint 13 is provided with at least one flow channel so as to be communicated with the gap 41 and/or the through space 42 and/or the through structure 43 on two sides of the connecting driving joint 13.
When the drill bit can simultaneously realize casing windowing and rock breaking drilling, or during construction in an open hole:
a method of drilling a rigidly driven lateral drilling tool, comprising the steps of:
1) running a steering gear and an anchor in the main well bore by using a feeding pipe column;
2) hanging an anchor on a seat;
3) running a rigidly driven side-boring tool by driving the drill string 4;
4) the rotary table or top drive drives the rigidly driven lateral drilling tool to rotate the borehole by driving the drill string 4;
when the drill bit may not be able to achieve casing windowing:
a method of drilling a rigidly driven lateral drilling tool, comprising the steps of:
1) running the diverter 6 and the anchor 7 in the main wellbore 9 using the running string 8;
2) the orientation of the steering gear 6 is determined by a gyroscope to guide the rigidly driven side-boring tool towards the correct orientation.
3) Hanging an anchor 7, and clamping the anchor 7 in a sleeve;
4) a tapping tool is put in to grind and mill the sleeve, and the tapping tool is taken out after the windowing operation of the sleeve is finished;
5) running a rigidly driven lateral drilling tool;
6) starting a rotary table or a top drive, and driving the rigidly driven lateral drilling tool to rotate and drill a well by driving a drill string 4;
and, the drilling circulation medium is led into the pressure-bearing hose 2 and flows through the gap 41 and/or the through space 42 and/or the through structure 43 to reach the drill bit 1, and then returns through the annular space of the pressure-bearing hose and the hole, or the drilling circulation medium reaches the drill bit 1 from the annular space of the pressure-bearing hose 2 and the hole and then flows through the gap 41 and/or the through space 42 and/or the through structure 43 to return through the drill bit 1.
The utility model discloses a set up drive festival serial in the pressure-bearing hose, carry the drilling fluid through the pressure-bearing hose, it is rotatory through drive festival serial transmission moment of torsion drive drill bit, the effectual weight on bit that has transmitted to reduced the production of holding in the palm the pressure phenomenon by a wide margin, broken rock is effectual, and is favorable to producing the well of rule.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A rigidly driven lateral drilling tool, comprising a drive joint string, a pressure hose (2) and a drilling section; the driving joint series is formed by connecting a plurality of driving joints (3) in series through a torque transmission structure (31);
at least one section of pressure-bearing hose (2) is sleeved outside the driving section string;
one end of the driving section serial is connected with the drilling section, the other end of the driving section serial is connected with a rotary driving device, and the rotary driving device transmits drilling power to the drilling section and/or drives the pressure-bearing hose (2) to rotate together through the driving section serial;
the drilling section comprises a drill bit (1), the drill bit (1) comprising a water eye and/or a nozzle (11);
a gap (41) is arranged between the driving section string and the pressure-bearing hose (2), a through space (42) is arranged inside the driving section string, and/or a through structure (43) is arranged outside the driving section string, so that the gap (41) and/or the through space (42) and/or the through structure (43) and the drill bit (1) form a channel for the circulation medium of the drilling well to flow.
2. A rigid driven lateral drilling tool according to claim 1, further comprising a diverter (6), an anchor (7) and a running string (8), wherein the running string (8), the diverter (6) and the anchor (7) are fixedly connected from top to bottom;
the rotary driving device comprises a driving drill string (4), one end of the driving joint string is connected with the drill bit (1), and the other end of the driving joint string penetrates through a steering gear (6) to be connected with the driving drill string (4);
the drive string (4) is provided with rotary power by a rotary table or a top drive at the wellhead.
3. A rigid driven lateral drilling tool according to claim 1, wherein the pressure-containing hose (2) is fixedly connected to the drive connection string such that the drive connection string can drive the pressure-containing hose (2) to rotate together.
4. A rigid driven side-boring tool according to claim 1, further comprising a near-bit motor (12), said near-bit motor (12) being arranged behind the drill bit (1), said near-bit motor (12) being connected to the interior of the pressure hose (2), the drilling circulation medium in the pressure hose (2) being capable of driving the drill bit via said near-bit motor (12).
5. A rigid driven lateral drilling tool according to claim 1, wherein the torque transferring structure (31) is a universal joint.
6. A rigid driven lateral drilling tool according to claim 1, wherein the torque transferring structure (31) is a hinged universal joint.
7. A rigid driven lateral boring tool according to claim 1, wherein the drill bit (1) has an outer diameter of 10 to 75mm, the pressure hose (2) has an outer diameter of 10 to 70mm, and the drive joint string has an outer diameter of 6 to 60 mm.
8. A rigid drive lateral drilling tool according to claim 1, characterized in that the drive node (3) is of titanium alloy material.
9. A rigid driven lateral boring tool according to claim 1, further comprising an attitude measurement module (5) for measuring the attitude at the near bit (1).
10. A rigid driven lateral drilling tool according to claim 1, wherein a plurality of sections of pressure-bearing hoses are sleeved outside the drive joint string, and two adjacent sections of pressure-bearing hoses are hermetically connected by a connecting drive joint (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120550986.5U CN214787189U (en) | 2021-03-17 | 2021-03-17 | Lateral drilling tool driven rigidly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120550986.5U CN214787189U (en) | 2021-03-17 | 2021-03-17 | Lateral drilling tool driven rigidly |
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| CN214787189U true CN214787189U (en) | 2021-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110896A (en) * | 2021-03-17 | 2022-09-27 | 徐梓辰 | Rigidly-driven lateral drilling tool and drilling method thereof |
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2021
- 2021-03-17 CN CN202120550986.5U patent/CN214787189U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110896A (en) * | 2021-03-17 | 2022-09-27 | 徐梓辰 | Rigidly-driven lateral drilling tool and drilling method thereof |
| CN115110896B (en) * | 2021-03-17 | 2024-09-17 | 徐梓辰 | Rigid-driven lateral drilling tool and drilling method thereof |
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