CN110578469B - Extension drilling tool in sleeve - Google Patents
Extension drilling tool in sleeve Download PDFInfo
- Publication number
- CN110578469B CN110578469B CN201910926137.2A CN201910926137A CN110578469B CN 110578469 B CN110578469 B CN 110578469B CN 201910926137 A CN201910926137 A CN 201910926137A CN 110578469 B CN110578469 B CN 110578469B
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- CN
- China
- Prior art keywords
- joint
- center shaft
- drilling
- shell
- drill rod
- 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.)
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- 238000005553 drilling Methods 0.000 title claims abstract description 77
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 239000012530 fluid Substances 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B12/00—Accessories for drilling tools
- E21B12/04—Drill bit protectors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B7/046—Directional drilling horizontal drilling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an extension drilling tool in a sleeve, which comprises a shell, wherein a lower joint and an upper joint are respectively fixed at two ends of the shell, a power drilling mechanism is arranged in the shell, the power drilling mechanism comprises a drill rod joint, one end of the drill rod joint, which is far away from the lower joint, is in threaded connection with a pin joint, a connecting center shaft is sleeved on the pin joint, a pressure bearing is arranged between the pin joint and the connecting center shaft, the connecting center shaft is in threaded connection with a driver shell, one end of the pin joint, which is far away from the drill rod joint, extends into the driver shell and is connected with a diversion center shaft, the diversion center shaft is connected with a power impeller, the power impeller is connected with a centralizing block, and the power impeller is in clearance fit with the centralizing block. The impact power impeller of the drilling fluid generates torque and drilling pressure to the bottom of the well during the underground operation construction, so that the requirement of the extended drilling operation can be met, the drilling equipment is not required to be added in the operation process, and the requirement on the drilling mud is low.
Description
Technical Field
The invention relates to the technical field of oil and natural gas drilling, in particular to an in-casing extension drilling tool.
Background
With the continuous progress of petroleum and natural gas drilling technology, the drilling depth is continuously increased, and the horizontal section is also continuously prolonged. The problem that follows is that along with the continuous extension of horizontal segment, the high limit of drilling tool and the friction of wall of a well are increasingly greater, and the weight on bit that its consumption comes from the vertical segment to provide is increasingly more, leads to the weight on bit position to be lower and lower, and then leads to the bit to can not effectually break rock, has not only reduced drilling efficiency, has also limited the distance of the horizontal segment of well drilling simultaneously. While current rotary geosteering and axially vibrating tools have solved the problem of weight on bit consumption due to high side friction to some extent, their high operating costs still limit the use of partially low capacity, especially in mid-to-late-development oil areas.
Disclosure of Invention
It is an object of the present invention to provide an extended reach drilling tool within a casing that solves the problems of the prior art described above.
In order to achieve the above object, the present invention provides the following solutions: the invention provides an extension drilling tool in a casing, which comprises a casing, wherein a lower joint and an upper joint are respectively fixed at two ends of the casing, a cavity is formed between the lower joint and the upper joint, a power drilling mechanism is arranged in the casing, the power drilling mechanism comprises a drill rod joint, one end of the drill rod joint, which is far away from the lower joint, is in threaded connection with a male buckle joint, a connecting center shaft is sleeved on the male buckle joint, a pressure bearing is arranged between the male buckle joint and the connecting center shaft, the connecting center shaft is in threaded connection with a driver casing, one end of the male buckle joint, which is far away from the drill rod joint, extends into the driver casing and is connected with a diversion center shaft, the diversion center shaft is connected with a power impeller, the power impeller is connected with a centralizing block, the power impeller is in clearance fit with the centralizing block, the drill rod joint is in threaded connection with a drill rod, and the drill rod is in threaded connection with a drill bit.
Preferably, the inner wall of the drill rod joint is provided with threads, the outer wall of the pin joint is provided with threads matched with the drill rod joint, one end of the pin joint is in threaded connection with the drill rod joint, the other end of the pin joint is fixedly provided with an interference key, and the pin joint is connected with a diversion center shaft through the interference key.
Preferably, an interference key is fixed at one end of the diversion center shaft far away from the pin joint, and the diversion center shaft is connected with the power impeller through the interference key.
Preferably, a limiting step is fixed on the outer wall of the driver shell, and the limiting step is fixed on the inner wall of the shell.
Preferably, the pressure bearing is sleeved on one end of the male buckle connector extending into the driver shell, and the pressure bearing is in contact connection with the connecting center shaft.
Preferably, the inner wall of the driver shell is provided with threads, the outer wall of the connecting center shaft is provided with threads matched with the driver shell, and one end of the connecting center shaft is in threaded connection with the driver shell.
Preferably, one end of the centralizing block, which is close to the upper joint, is connected with a hydraulic pressurizing table in a threaded manner.
The invention discloses the following technical effects: 1. the invention can be used as a new in-pipe extension horizontal well drilling technology, can extend the horizontal depth of a drilling horizontal section from tens of meters to tens of meters under the condition of low friction resistance, compared with rotary geosteering operation, the operation cost of a single well is only one tenth or even one tenth of that of the rotary geosteering operation, compared with axial vibration tool operation, the tool can not vibrate in the using process, thus the drill bit can be effectively protected,
2. the invention can avoid the stick-slip vibration problem of the drill bit in the soft and hard staggered stratum in the use process, and can drill longer distance under the condition of using the same drill bit than the axial vibration tool, and the single well operation cost is lower than the operation cost of using the axial vibration tool at present.
3. In the use process of the existing large-displacement horizontal well drilling tool, an irregular borehole is often generated, a certain difficulty is brought to the later-stage well completion operation, no pushing and centralizing tool is arranged in the use process of the tool, the drill bit cannot generate vibration and bounce, the drilled borehole is smooth and unthreaded, and the borehole diameter size is consistent up and down, so that the development of the in-pipe extension drilling tool is an important direction of the existing large-displacement horizontal well drilling technology.
4. The drilling tool can ensure the requirements on drilling depth and length in the drilling process, the operation is completed under the condition of not increasing the original drilling operator, the tool is simple to operate, the operation can be carried out only by pumping drilling fluid into the drilling tool according to a normal drilling fluid circulating pump, the drilling operation can be continued by only lifting and replacing the drill bit on the drill rod joint connected with the lower joint according to the abrasion degree of the drill bit before the operation is completed, and meanwhile, compared with the well drilling operation carried out by other tools, the drilling tool is smooth, the well logging and completion operation can be carried out without repeated well dredging operation, so that the drilling tool can be used for reducing the drilling cost and shortening the well construction period. Thereby improving the economic benefit of drilling.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of an extended reach drilling tool in a casing according to the present invention;
FIG. 2 is a schematic diagram of a power drilling mechanism according to the present invention;
FIG. 3 is an enlarged view of part A of the present invention;
FIG. 4 is an enlarged view of part B of the present invention;
FIG. 5 is an enlarged view of part C of the present invention;
FIG. 6 is a front view of the hydraulic booster stage of the present invention;
FIG. 7 is a top view of the hydraulic booster stage of the present invention;
wherein, 1 is the lower joint, 2 is the shell, 3 is the drilling rod joint, 4 is the pin joint, 5 is the connection axis, 6 is the pressure bearing, 7 is the water conservancy diversion axis, 8 is the power impeller, 9 is the driver shell, 10 is the righting piece, 11 is the upper joint, 12 is the interference key, 13 is the limit step, 14 water conservancy pressurization platform, 15 drilling rods, 16 drill bits.
Detailed Description
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.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides an extension drilling tool in a casing, which comprises a shell 2, wherein a lower joint 1 and an upper joint 11 are respectively fixed at two ends of the shell 2, a cavity is formed between the lower joint 1 and the upper joint 11, the lower joint 1, the shell 2 and the upper joint 11 are used as shell supporting parts of the tool, a power drilling mechanism is arranged in the shell 2, the power drilling mechanism comprises a drill rod joint 3, one end of the drill rod joint 3 far away from the lower joint 1 is in threaded connection with a pin joint 4, a connecting center shaft 5 is sleeved on the pin joint 4, a pressure bearing 6 is arranged between the pin joint 4 and the connecting center shaft 5, torque generated by a power impeller 8 can be effectively transmitted to the drill rod joint 3, the connecting center shaft 5 is in threaded connection with a driver shell 9, one end of the pin joint 4 far away from the drill rod joint 3 is extended into the driver shell 9 and is connected with a guide center shaft 7, the guide center shaft 7 is connected with a power impeller 8, the power impeller 8 is connected with a centering block 10, the power impeller 8 is in clearance fit with the centering block 10, the centering block can meet the requirement of centering, and simultaneously, the centering block 10 is not in friction with a larger bit 16, and the threaded connection between the centering block 10 and a drill bit 15 is in threaded connection with a drill bit 15.
All parts of the invention are metal parts and have no rubber parts, so that the tool has a wide temperature and pressure application range and can meet the requirements of high-temperature and high-pressure drilling.
Further optimizing scheme, be equipped with the screw thread on the drilling rod joint 3 inner wall, be equipped with the screw thread with drilling rod joint 3 looks adaptation on the pin joint 4 outer wall, the one end threaded connection of pin joint 4 is in drilling rod joint 3, the other end of pin joint 4 is fixed with interference key 12, pin joint 4 passes through interference key 12 and connects water conservancy diversion axis 7.
According to a further optimization scheme, an interference key 12 is fixed at one end, far away from the pin joint 4, of the flow guiding center shaft 7, and the flow guiding center shaft 7 is connected with the power impeller 8 through the interference key 12.
In a further optimized scheme, a limiting step 13 is fixed on the outer wall of the driver shell 9, and the limiting step 13 is fixed on the inner wall of the shell 2.
In a further optimized scheme, the pressure bearing 6 is sleeved on one end of the pin joint 4 extending into the driver shell 9, and the pressure bearing 6 is in contact connection with the connecting center shaft 5.
In a further optimized scheme, threads are arranged on the inner wall of the driver shell 9, threads matched with the driver shell 9 are arranged on the outer wall of the connecting center shaft 5, and one end of the connecting center shaft 5 is in threaded connection with the driver shell 9.
According to a further optimization scheme, one end of the righting block 10, which is close to the upper joint 11, is in threaded connection with a hydraulic pressurizing table 14, the hydraulic pressurizing table is an auxiliary accessory for increasing drilling pressure, the force of the drilling fluid acting on a tool is increased by increasing the intercepting area of the drilling fluid, the force is transmitted to a drill bit through the tool and a drill rod 15, the drilling pressure is further improved, a regular hexagonal non-penetrating deep hole (not shown in the figure) is formed in the center of the hydraulic pressurizing table 14, the hydraulic pressurizing table can be used as a torsion hole when the hydraulic pressurizing table 14 and the tool are installed, and meanwhile, the hydraulic pressurizing table is used as a center alignment tool fixing hole when an internal tool is maintained and installed.
Working principle: according to the in-pipe extension drilling tool disclosed by the invention, the drill rod joint 3 is connected with the pin joint 4 through threads from inside to outside in sequence, the connecting center shaft 5 is connected with the driver shell 9 through threads, the pressure bearing 6 is arranged between the pin joint 4 and the connecting center shaft 5 to ensure that torque generated by the power impeller 8 can be effectively transmitted to the drill rod joint 3, the pin joint 4 is connected with the diversion center shaft 7 through the interference key 11, the diversion center shaft 7 is connected with the power impeller 8 through the interference key 11, the centralizing block 10 is connected with the power impeller 8 through clearance fit, the centralizing requirement can be met, meanwhile, larger friction is not generated, the power drilling mechanism adopts a mounting mode from bottom to top in the assembling process, and the lower joint 1, the shell 2 and the upper joint 11 are used as shell supporting parts of the tool because part gaps are smaller and lubricating oil such as kerosene is generally smeared on the surfaces. The impact power impeller 8 of the drilling fluid generates torque and drilling pressure to the bottom of the well during the underground operation construction, the requirement of extending drilling work can be met, drilling equipment is not required to be added in the operation process, the requirement on drilling mud is low, the operation can be performed only by using tools and mud in the original drilling section, the operation procedure is simple, the rotation of a drilling machine turntable is not required, only the impeller rotation is required by a drilling pump, the drilling fluid required by the drilling pressure is required by the drilling bit, the power drilling mechanism can move to the bottom of the well along with a drill rod until the drilling fluid moves to the necking joint closest to the bottom of the well, and the operation is completed. After the operation is completed, the tool is lifted out to a wellhead along with the drill rod to be recovered, the next operation can be carried out only by replacing parts with serious wear in the next operation, the main parts cannot be damaged in the use process, the parts can be used repeatedly, only parts need to be replaced in repeated use, the tool use cost is low, the tool supporting part is the same as the drill rod in size, the requirement on drilling equipment is low, and the tool adopts higher conventional parts with higher strength, so that the tool has higher robustness and longer service life.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (4)
1. An extended reach drilling tool within a casing, comprising: the drilling device comprises a shell (2), a lower joint (1) and an upper joint (11) are respectively fixed at two ends of the shell (2), a cavity is formed between the lower joint (1) and the upper joint (11), a power drilling mechanism is arranged in the shell (2), the power drilling mechanism comprises a drill rod joint (3), one end of the drill rod joint (3) far away from the lower joint (1) is in threaded connection with a pin joint (4), a connecting center shaft (5) is sleeved on the pin joint (4), a pressure bearing (6) is arranged between the pin joint (4) and the connecting center shaft (5), a driver shell (9) is in threaded connection with the connecting center shaft (5), one end of the pin joint (4) far away from the driver shell (9) is connected with a diversion center shaft (7), the diversion center shaft (7) is connected with a power impeller (8), the power impeller (8) is connected with a righting block (10), the power impeller (8) is in clearance fit with the righting block (10), the pin joint (3) is connected with a drill rod (15), and the drill rod joint (15) is in threaded connection with a drill bit (15).
The inner wall of the drill rod joint (3) is provided with threads, the outer wall of the pin joint (4) is provided with threads matched with the drill rod joint (3), one end of the pin joint (4) is in threaded connection with the drill rod joint (3), the other end of the pin joint (4) is fixedly provided with an interference key (12), and the pin joint (4) is connected with a diversion center shaft (7) through the interference key (12);
an interference key (12) is fixed at one end of the diversion center shaft (7) far away from the pin joint (4), and the diversion center shaft (7) is connected with a power impeller (8) through the interference key (12);
the pressure bearing (6) is sleeved on one end of the male buckle connector (4) extending into the driver shell (9), and the pressure bearing (6) is in contact connection with the connecting center shaft (5).
2. The extended reach drilling tool of claim 1, wherein: a limiting step (13) is fixed on the outer wall of the driver shell (9), and the limiting step (13) is fixed on the inner wall of the shell (2).
3. The extended reach drilling tool of claim 1, wherein: the inner wall of the driver shell (9) is provided with threads, the outer wall of the connecting center shaft (5) is provided with threads matched with the driver shell (9), and one end of the connecting center shaft (5) is in threaded connection with the inside of the driver shell (9).
4. The extended reach drilling tool of claim 1, wherein: one end of the centralizing block (10) close to the upper joint (11) is connected with a hydraulic pressurizing table (14) in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910926137.2A CN110578469B (en) | 2019-09-27 | 2019-09-27 | Extension drilling tool in sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910926137.2A CN110578469B (en) | 2019-09-27 | 2019-09-27 | Extension drilling tool in sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110578469A CN110578469A (en) | 2019-12-17 |
| CN110578469B true CN110578469B (en) | 2024-03-22 |
Family
ID=68814100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910926137.2A Active CN110578469B (en) | 2019-09-27 | 2019-09-27 | Extension drilling tool in sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110578469B (en) |
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| US8408335B2 (en) * | 2008-12-03 | 2013-04-02 | Schlumberger Technology Corporation | Drill string with modular motor units |
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| Publication number | Publication date |
|---|---|
| CN110578469A (en) | 2019-12-17 |
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