CN117432333A - Ultrashort radius directional drilling tool and method - Google Patents
Ultrashort radius directional drilling tool and method Download PDFInfo
- Publication number
- CN117432333A CN117432333A CN202210859393.6A CN202210859393A CN117432333A CN 117432333 A CN117432333 A CN 117432333A CN 202210859393 A CN202210859393 A CN 202210859393A CN 117432333 A CN117432333 A CN 117432333A
- Authority
- CN
- China
- Prior art keywords
- transmission
- drill bit
- universal
- nipple
- piston structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- 210000002445 nipple Anatomy 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims description 19
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
Abstract
The invention discloses an ultrashort radius directional drilling tool and a method, wherein the ultrashort radius directional drilling tool comprises a sleeve joint transmission section and a universal transmission section, the sleeve joint transmission section comprises a drill bit, at least two connecting cylinders capable of deflecting unidirectionally, and a guide execution assembly, the drill bit is arranged at the front part of the connecting cylinder at the forefront part, and the guide execution assembly is arranged in the connecting cylinder; the universal transmission section comprises a universal transmission nipple string, the universal transmission nipple string is composed of a plurality of transmission nipple strings used for bearing torque, the transmission nipple is energy-saving and provides rotary drilling power for the drill bit under the condition of full rotation, and a preset deflection limit angle is arranged between every two adjacent transmission nipple strings; the device has engineering feasibility and practical value for energy and mineral exploitation.
Description
Technical Field
The invention relates to the field of drilling technology and oil and gas exploitation, in particular to an ultrashort radius directional drilling tool and method.
Background
Control of production costs has been a goal pursued for oil and gas drilling, and development of energy and mineral products has been increasingly demanding in terms of wellbore technical equipment. Ultra-short radius drilling technology is becoming an effective means of fine development. The branch well is drilled at any position in the main well with an ultrashort radius, and then the branch well is continuously extended in a direction different from the well axis of the main well or the well is extended in a direction different from the well axis of the main well at the tail end of the existing well by an ultrashort radius deflecting technology; in general, an ultrashort radius may be understood as a whipstock turning radius of less than 30 meters.
At present, a coiled tubing is adopted to transmit a bent joint screw motor to realize middle-short radius controllable track sidetracking drilling, but the directional mode is sliding guide, the whole drill string does not rotate, a drilling circulation medium drives a screw to drive a drill bit to rotate, the well inclination and azimuth performance of the drilling tool are changed through the change of the angle of the surface of a bent joint tool, the limitation that the drilling tool does not rotate during directional operation, short radius directional drilling operation cannot be completed and the like exists, and the well track precision is poor; and because the coiled tubing has the inherent disadvantages of non-rotatability, low strength and the like, the tubular column is easy to break and fracture, the diameter of the drilled hole is too small to meet the basic requirement of oil and gas reservoir development on the diversion capability of the oil and gas well, the coiled tubing almost cannot be used for short-radius lateral drilling, and the coiled tubing cannot work in the category of ultra-short-radius lateral drilling.
Another method for realizing ultra-short radius directional drilling is realized through coiled tubing drilling, however, the method is difficult to apply drilling pressure, the drilling efficiency is low, the coiled tubing is seriously buckled in the well hole, the drilling of a drill bit is hindered, and the field requirement is difficult to reach.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an ultrashort radius directional drilling tool and a method thereof, which are used for laterally drilling an ultrashort radius well section through the bottom of a main well hole or any other position, so as to continuously drill the ultrashort radius well section to the side direction, thereby realizing the extension of a controllable track; the stable and reliable ultra-short radius directional drilling technology is enabled; the invention has important application in the drilling of short radius wells and extended bore holes thereof with a kick-off radius in the range of 1-30 meters.
In order to achieve the above purpose, the present invention provides the following technical solutions: the device comprises a sleeve joint transmission section and a universal transmission section, wherein the sleeve joint transmission section comprises a drill bit, at least two connecting cylinders capable of deflecting unidirectionally and a guiding execution assembly, the drill bit is arranged at the front part of the forefront connecting cylinder, and the guiding execution assembly is arranged in the connecting cylinder; the universal transmission section comprises a universal transmission nipple string, the universal transmission nipple string is composed of a plurality of transmission nipple strings used for bearing torque, the transmission nipple is energy-saving and provides rotary drilling power for the drill bit under the condition of full rotation, and a preset deflection limit angle is arranged between every two adjacent transmission nipple strings;
and the sleeve joint transmission section and the universal transmission section are internally provided with a through structure, and the through structure forms a main runner for circulating drilling circulation media.
Further, preferably, at least one key groove structure and one anti-disengaging structure are arranged in each connecting cylinder, the key groove structure is used for realizing torque transmission between the two connecting cylinders, and unidirectional deflection between the two connecting cylinders can be realized; the anti-falling structure can prevent the two connecting cylinders from being separated from each other; the length of the adjacent connecting cylinders is less than 5 times of the diameter of the drill bit; the preset deflection limiting angle is arranged between the adjacent connecting cylinders, and the preset deflection limiting angle is set to be 1-10 degrees.
Further, preferably, at least one universal joint for realizing rotary drilling power transmission with a variable angle is arranged in each transmission nipple, and the distance between adjacent universal joints in the universal transmission nipple series is less than 1 meter;
the minimum distance between the deflection centers of adjacent transmission pup joints in the universal transmission pup joint series is less than 5 times of the diameter of the drill bit; the preset deflection limiting angle is arranged between the adjacent transmission pup joints, and the preset deflection limiting angle is set to be 1-8 degrees.
Further preferably, the guiding execution assembly comprises a drilling fluid diverter valve, a diverter valve driver and a plurality of groups of hydraulic piston structure assemblies, wherein the groups of hydraulic piston structure assemblies are fixedly connected to the wall of the connecting cylinder along the circumferential direction of the connecting cylinder; the diverter valve actuator is in driving connection with the drilling fluid diverter valve, and the diverter valve actuator is typically an electric motor or electromagnet.
The diverter valve driver can drive the drilling fluid diverter valve to distribute liquid for the hydraulic piston structure assemblies and controllably distribute the hydraulic fluid to each hydraulic piston structure assembly, so that the hydraulic pressure state of each hydraulic piston structure assembly is controlled.
Further preferably, the hydraulic piston structure assembly comprises a piston cylinder, a piston structure and a pushing piece which are matched with each other, the piston structure and the pushing piece are pushed by hydraulic fluid to push against the well wall along the radial direction of the connecting cylinder under the action of the liquid distribution of the drilling fluid flow dividing valve, so that a plurality of groups of piston structure assemblies are respectively pushed against the well wall along the radial direction of the piston structure assembly to generate resultant force so as to deflect the drill bit.
Compared with the prior art, the invention has the beneficial effects that:
1. in the device, the guide execution assembly is borne by the connecting cylinder, so that the accommodating space is greatly expanded, and the device is beneficial to improving the performance and reliability of the guide execution assembly.
2. The guide execution assembly of the invention realizes the guide by pushing against the well wall by the hydraulic piston structure, and is favorable for realizing high thrust under the conditions of short diameter and small diameter by means of the pressure of drilling circulation media.
3. In the device, the limit deflection angle between adjacent connecting cylinders is not more than 8 degrees, wherein the limit deflection angle is a mechanical structure limit so as to prevent the connecting cylinders from excessively buckling to cause the fracture of the drilling tool;
4. the rear transfer of the connecting cylinder adopts a universal joint to realize power transmission, and the requirement of rotary drilling is considered.
Drawings
FIG. 1 is a schematic view of the overall construction of an ultra-short radius directional drilling tool;
FIG. 2 is a cross-sectional view of the connecting cylinder and the guide actuator assembly;
FIG. 3 is a schematic view of a connecting cylinder and a guide actuator assembly;
in the figure: a. a universal drive section; b. sleeving a transmission section; 1. a connecting cylinder; 2. universal transmission nipple series; 3. a drill bit; 5. a first connecting cylinder; 7. a second connecting cylinder; 10. an anti-falling structure; 11. a key slot structure; 12. a measuring device; 13. a hydraulic piston structural assembly; 13-1, a piston cylinder; 13-2, a piston structure; 13-3, a pushing piece; 20. a transmission nipple; 21. a universal joint; 24. a drilling fluid diverter valve; 25. a diverter valve driver;
detailed description of the preferred embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: referring to fig. 1-3, the present invention provides a technical solution: 1. an ultra-short radius directional drilling tool, characterized by: the device comprises a sleeve joint transmission section (b) and a universal transmission section (a), wherein the sleeve joint transmission section (b) comprises a drill bit (3), at least two connecting cylinders (1) capable of deflecting unidirectionally and a guiding execution assembly, the drill bit is arranged at the front part of the forefront connecting cylinder (1), and the guiding execution assembly comprises a hydraulic piston structure and a measuring device (12); the guide execution assembly is arranged in the connecting cylinder; the universal transmission section (a) comprises a universal transmission nipple series (2), the universal transmission nipple series (2) is composed of a plurality of transmission nipple (20) used for bearing torque, the transmission nipple (20) can provide rotary drilling power for the drill bit (3) under the condition of full rotation, and a preset deflection limiting angle is arranged between every two adjacent transmission nipple (20);
and the sleeve joint transmission section (b) and the universal transmission section (a) are internally provided with a through structure, and the through structure forms a main runner for circulating drilling circulation media.
In the embodiment, at least one key groove structure (11) and one anti-falling structure (10) are arranged in each connecting cylinder (1), and the key groove structure is used for realizing torque transmission between the two connecting cylinders and can realize unidirectional deflection between the two connecting cylinders; the anti-falling structure can prevent the two connecting cylinders from being separated from each other; the length of the adjacent connecting cylinders (1) is less than 5 times of the diameter of the drill bit (3); the embodiment comprises a first connecting cylinder (5) and a second connecting cylinder (7); a preset deflection limiting angle is arranged between the adjacent connecting cylinders (1), and the preset deflection limiting angle is set to be 1-10 degrees;
in the embodiment, at least one universal joint (21) for realizing rotary drilling power transmission with variable angles is arranged in each transmission nipple (20), and the distance between adjacent universal joints (21) in the universal transmission nipple series (2) is smaller than 5 times of the diameter of the drill bit (3); a preset deflection limiting angle is arranged between every two adjacent transmission pup joints, and the preset deflection limiting angle is set to be 0.5-8 degrees;
in this embodiment, the guiding execution assembly (1) includes a drilling fluid diverter valve (24), a diverter valve driver (25) and at least one set of hydraulic piston structure assemblies (13), where the sets of hydraulic piston structure assemblies (13) are fixedly connected to the wall of the connecting cylinder (1) along the circumferential direction of the connecting cylinder (1);
the diverter valve driver (25) can drive the drilling fluid diverter valve (24) to distribute liquid to the hydraulic piston structure assemblies (13) and controllably distribute the hydraulic fluid to each hydraulic piston structure assembly (13), so as to control the hydraulic pressure state of each hydraulic piston structure assembly (13); the diverter valve actuator is in driving connection with the drilling fluid diverter valve, and the diverter valve actuator is typically an electric motor or electromagnet.
In this embodiment, the hydraulic piston structure assembly (13) includes a piston cylinder (13-1), a piston structure (13-2) and a pushing member (13-3) that are mutually matched, where the piston structure (13-2) and the pushing member (13-3) are periodically pushed by hydraulic fluid in a drilling fluid diverter valve (24) of a tool, and push against a well wall along a radial direction of the connecting cylinder (1), so that multiple groups of piston structure assemblies (13) respectively push against the well wall along the radial direction of the piston structure assembly to generate resultant force to deflect the drill bit (3), and it is noted that the piston cylinder in this embodiment includes an independent piston cylinder or a piston cylinder structure that is processed on the connecting cylinder and can accommodate a piston.
The embodiment also comprises an ultra-short radius directional drilling method, which is characterized by comprising the following steps:
step one: the ultra-short radius deflecting tool comprises a flexible drill rod and a high deflecting drill bit, the conventional drill string is utilized to drive the high deflecting drill bit through a section of flexible drill rod with a specific length, lateral drilling of an ultra-short radius well section is completed under the action of oblique force provided by an oblique device and drilling pressure, and the lengths of the flexible drill rod and the Gao Zaoxie drill bit are not smaller than the length of the ultra-short radius well section;
step two: the flexible drill rod and the high deflecting drill bit are lifted out, the ultra-short radius directional drilling tool is lowered into the ultra-short radius directional drilling tool to pass through the ultra-short radius well section, then drilling of the extended well section is completed, the whipstock can support the ultra-short radius directional drilling tool in an autonomous well, and the length of the sleeved transmission section is larger than the sum of the length of the ultra-short radius well section and the length of the extended well section;
step three: and changing the azimuth angle of the extended well section in the drilling operation process of the extended well section, so that the azimuth angle of the extended well section gradually reaches the drilling design requirement.
It should be noted that before the ultrashort radius deflecting tool laterally drills an ultrashort radius well section, the whipstock is often required to be firstly lowered into the whipstock, the whipstock is generally fixedly connected with an anchor, the anchor is clamped on the inner wall of a casing in a main well hole or is fixed with the wall of the main well hole through a slip, the inclined plane of the guide is fixed towards a specific direction, and a milling drill bit is lowered into the inclined plane to mill a window for opening the window, which is the prior art, so that the description is omitted here. In addition, for ease of understanding, it is within the scope of the present disclosure that the window milling, ultra-short radius wellbore section drilling, and extension wellbore section drilling may be divided into three tripping operations, and any two or three of the window milling, ultra-short radius wellbore section drilling, and extension wellbore section drilling operations may be combined into one drilling operation.
It should be noted that the rotation described in the present invention refers to the rotation about its axis, and the deflection described in the present invention refers to the bending or deviation of its axis from the original axis position by the pushing of the guiding device.
It should be noted that the guiding executing assembly described in the present invention refers not only to the guiding executing assembly with the specific structure described in the embodiment of this patent, but also any other device capable of executing the guiding function that can achieve the size and function requirements described in the present invention can be equivalently replaced with the guiding executing assembly with the specific structure described in the embodiment.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An ultra-short radius directional drilling tool, characterized by: the device comprises a sleeve joint transmission section (b) and a universal transmission section (a), wherein the sleeve joint transmission section (b) comprises a drill bit (3), at least two connecting cylinders (1) capable of being connected in a deflected mode and a guiding execution assembly, the drill bit is arranged at the front part of the forefront connecting cylinder (1), and the guiding execution assembly is arranged in the connecting cylinder; the universal transmission section (a) comprises a universal transmission nipple series (2), the universal transmission nipple series (2) is composed of a plurality of transmission nipple (20) used for bearing torque, the transmission nipple (20) can provide rotary drilling power for the drill bit (3) under the condition of full rotation, and a preset deflection limiting angle is arranged between every two adjacent transmission nipple (20);
and the sleeve joint transmission section (b) and the universal transmission section (a) are internally provided with a through structure, and the through structure forms a main runner for circulating drilling circulation media.
2. An ultra-short radius directional drilling tool as defined in claim 1, wherein: each connecting cylinder (1) is provided with at least one key groove structure (11) and one anti-falling structure (10), and the key groove structure is used for realizing torque transmission between the two connecting cylinders and can realize unidirectional deflection between the two connecting cylinders; the anti-falling structure can prevent the two connecting cylinders from being separated from each other; the length of the adjacent connecting cylinders (1) is less than 5 times of the diameter of the drill bit (3); a preset deflection limiting angle is arranged between the adjacent connecting cylinders (1), and the preset deflection limiting angle is set to be 1-10 degrees.
3. An ultra-short radius directional drilling tool as defined in claim 1, wherein: at least one universal joint (21) for realizing rotary drilling power transmission with variable angles is arranged in each transmission nipple (20), and the distance between adjacent universal joints (21) in the universal transmission nipple series (2) is smaller than 5 times of the diameter of the drill bit (3); the preset deflection limiting angle is arranged between the adjacent transmission pup joints, and the preset deflection limiting angle is set to be 1-8 degrees.
4. An ultra-short radius directional drilling tool according to any one of claims 1-3, wherein: the guiding execution assembly comprises a drilling fluid diverter valve (24), a diverter valve driver (25) and at least one group of hydraulic piston structure assemblies (13), wherein the groups of hydraulic piston structure assemblies (13) are fixedly connected to the wall of the connecting cylinder (1) along the circumferential direction of the connecting cylinder (1); the diverter valve driver is in transmission connection with the drilling fluid diverter valve, and the diverter valve driver (25) is an electric motor or an electromagnet;
the diverter valve driver (25) can drive the drilling fluid diverter valve (24) to distribute liquid to the hydraulic piston structure assemblies (13) and controllably distribute the hydraulic fluid to each hydraulic piston structure assembly (13), so that the hydraulic pressure state of each hydraulic piston structure assembly (13) is controlled.
5. An ultra-short radius directional drilling tool as defined in claim 4, wherein: the hydraulic piston structure assembly (13) comprises a piston cylinder (13-1) and a piston structure (13-2) which are matched with each other, the piston structure (13-2) is periodically pushed by hydraulic fluid in a drilling hole of a tool under the action of liquid distribution of a drilling fluid flow dividing valve (24), and the hydraulic piston structure assembly is pushed against a well wall along the radial direction of the connecting cylinder (1), so that a plurality of groups of piston structure assemblies (13) are respectively pushed against the well wall along the radial direction of the piston structure assembly to generate resultant force so as to deflect the drill bit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859393.6A CN117432333A (en) | 2022-07-20 | 2022-07-20 | Ultrashort radius directional drilling tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210859393.6A CN117432333A (en) | 2022-07-20 | 2022-07-20 | Ultrashort radius directional drilling tool and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117432333A true CN117432333A (en) | 2024-01-23 |
Family
ID=89545056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210859393.6A Pending CN117432333A (en) | 2022-07-20 | 2022-07-20 | Ultrashort radius directional drilling tool and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117432333A (en) |
-
2022
- 2022-07-20 CN CN202210859393.6A patent/CN117432333A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022083602A1 (en) | Short-radius drilling tool, track-controllable lateral drilling tool and method | |
| WO2022033609A2 (en) | Short radius drilling tool | |
| US6659201B2 (en) | Method and apparatus for directional actuation | |
| CN113153151A (en) | Flexible guiding drilling tool | |
| WO2019095527A1 (en) | Rotary guide device | |
| WO2019095525A1 (en) | Hybrid rotary guiding device | |
| US10787886B2 (en) | Auxiliary feeding device for flexible pipe of radial horizontal well | |
| CN114135227B (en) | High-stability short-radius deflecting drilling tool | |
| CN112554794A (en) | High-precision short-radius rotary steering drilling tool | |
| WO2023198087A1 (en) | Hydraulic push-the-bit self-resetting flexible drill pipe and drill string | |
| WO2019095526A1 (en) | Rotary steering device based on radial driving force | |
| CN113404429B (en) | Composite steering drilling tool and method | |
| CN111173452B (en) | Static bias rotary steering drilling tool with sandwich cylinder structure | |
| CN114687669A (en) | Flexible drill column for ultra-short radius horizontal drilling and construction method | |
| CN113202414A (en) | High-reliability flexible guiding drilling tool | |
| CN117432333A (en) | Ultrashort radius directional drilling tool and method | |
| WO2022228397A1 (en) | Rotary steerable drilling tool | |
| CN112855024A (en) | Rotary guide drilling tool | |
| CN214247216U (en) | Horizontal drilling stabilizer of flexible drill column for ultra-short radius horizontal drilling | |
| WO2022033610A1 (en) | Short radius, controllable track drilling tool and composite guiding and drilling tool | |
| CN215332672U (en) | High-stability track-controllable flexible drilling tool | |
| CN212406586U (en) | Multi-branch yield tool pipe internal guiding tool | |
| CN114673444B (en) | Flexible screw drilling tool and drilling method | |
| WO2024017272A1 (en) | Underground driving device and method for small-diameter drill string | |
| CN115874929B (en) | Double-push combined control rotary steering drilling system and drilling method for complex difficult-to-drill stratum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |