CN110552628A - Drilling device, stimulation string with drilling device and using method - Google Patents
Drilling device, stimulation string with drilling device and using method Download PDFInfo
- Publication number
- CN110552628A CN110552628A CN201810548697.4A CN201810548697A CN110552628A CN 110552628 A CN110552628 A CN 110552628A CN 201810548697 A CN201810548697 A CN 201810548697A CN 110552628 A CN110552628 A CN 110552628A
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- Prior art keywords
- drilling
- fluid
- pipe
- assembly
- string
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- 238000005553 drilling Methods 0.000 title claims abstract description 163
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000000638 stimulation Effects 0.000 title claims description 39
- 238000004519 manufacturing process Methods 0.000 claims abstract description 52
- 239000012530 fluid Substances 0.000 claims abstract description 48
- 238000004873 anchoring Methods 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 230000003628 erosive effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a drilling device, a production increasing tubular column with the same and a using method, wherein the drilling device comprises: the body is communicated with a casing of the production increasing pipe column, at least one drilling through hole is formed in the body, at least one power driving unit is arranged in the casing, at least one pushing pipe is arranged in the body, one end of each pushing pipe is correspondingly connected to each power driving unit, at least one drilling combination is correspondingly arranged in at least one drilling through hole, the other end of each pushing pipe is correspondingly connected to each drilling combination, when the drilling device is put into a stratum in place, fluid is injected into the casing, the power driving units correspondingly push the pushing pipes to move under the action of the fluid, and the pushing pipes correspondingly push the drilling combinations to extend out of the drilling through holes for stratum drilling.
Description
Technical Field
the invention relates to a drilling device and a production increasing tubular column with the same, in particular to a drilling device for a multi-branch well bore with a tree root structure and a production increasing tubular column.
Background
Currently, single well downhole stimulation techniques are primarily fracture acidizing and radial drilling. The radial well drilling technology mainly utilizes the energy of high-pressure water injection to form a plurality of radial branch channels in an oil-gas layer through a main well hole, the length can reach 100m, the well diameter can reach 50mm, an oil-gas circulation channel is increased, the drainage area is increased, and therefore the yield is increased. Because the acidizing and fracturing technology is difficult to control the yield-increasing effect, the operation cost is high, the operation period is long, and the number of radial drilling in a certain operation time is limited in the conventional radial drilling technology, the development of a drilling device for overcoming the defects and a yield-increasing tubular column with the drilling device are urgently needed.
there is a need for a new stimulation technique that more efficiently and inexpensively creates more channels over a time frame to release the production from a reservoir.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a drilling device which is suitable for a production increasing tubular column, wherein the drilling device comprises:
The body is communicated with a sleeve of the production increasing tubular column, and at least one drilling through hole is formed in the body;
At least one power driving unit arranged in the sleeve;
The pushing pipe is arranged in the body, and one end of each pushing pipe is correspondingly connected with each power driving unit;
The drilling combination is correspondingly arranged in the drilling through hole, and the other end of each pushing pipe is correspondingly connected with each drilling combination;
and after the drilling device is put into the stratum to reach the position, fluid is injected into the sleeve, the power driving unit correspondingly pushes the pushing pipe to move under the action of the fluid, and the pushing pipe correspondingly pushes the drilling combination to extend out of the drilling through hole so as to drill the stratum.
In the drilling device, the body has a guide cavity with a large drift diameter, the drilling through hole is communicated with the guide cavity, and the thrust pipe is arranged in the guide cavity.
The drilling device, wherein the drilling through hole has an angle, and the drilling assembly drills the stratum along the angle direction of the drilling through hole.
in the drilling device, the body is further provided with a one-way valve mounting opening, the drilling device further comprises a one-way valve, the one-way valve is mounted on the one-way valve mounting opening, and fluid outside the body flows back to the body and the casing through the one-way valve.
in the drilling device, the check valve is further provided with a filter screen for filtering the fluid flowing into the check valve.
The drilling device, wherein the power driving unit is a power impeller.
The drilling apparatus described above, wherein the drilling assembly is a turbine drilling assembly, the fluid in the casing is transported to the turbine drilling assembly through the thrust pipe, and the turbine drilling assembly performs formation drilling under the action of the fluid.
The drilling device is characterized in that the drilling combination is a hydraulic erosion combination, the fluid in the casing is conveyed to the hydraulic erosion combination through the thrust pipe, and the hydraulic erosion combination injects the fluid to drill the stratum.
The invention also provides a stimulation string comprising a delivery device, a suspended packer, a plurality of casings, a plurality of pipeline anchoring devices, and a plurality of drilling devices according to any one of the preceding claims, wherein the suspended packer is connected to the delivery device, one of the plurality of casings is connected to the suspended packer, and the plurality of casings are in staggered connection with the plurality of drilling devices.
The production string further comprises a plurality of pipeline anchoring devices which are respectively arranged on the plurality of casings.
the stimulation string further comprising a booster valve coupled to the drilling apparatus at the bottom.
The production increasing tubular column is characterized in that the conveying device is a drill pipe or an oil casing.
The invention also discloses a using method of the stimulation string, wherein the stimulation string used for any one of the stimulation strings comprises the following steps:
Assembling a production increasing pipe column according to a construction design;
Running the production increasing pipe column in place;
Injecting a fluid into the stimulation string, establishing pressure within the stimulation string, and securing the stimulation string;
the drilling device drills under the action of fluid;
And (5) transferring to production operation.
The use method comprises the following steps before the production operation is carried out:
injecting acid liquor, and carrying out acidizing treatment on the whole main well and the sidetracking slim well;
and pressing or rotating the drill pipe or the oil casing pipe to set the suspension packer. The method of use described above, further comprising establishing pressure in the stimulation string via a pressurization valve and setting a packer and the pipeline anchoring device.
The using method is characterized in that the power driving unit correspondingly pushes the pushing pipe against to move under the action of the fluid, the pushing pipe correspondingly pushes the drilling combination to extend out of the drilling through hole, meanwhile, the drilling combination drills the stratum under the action of the fluid in the pushing pipe, and when the pushing pipe completely extends out of the drilling through hole, the drilling operation is finished.
The use method further comprises the following steps before the production operation is carried out: and fishing out the production increasing pipe column.
The use method further comprises the following steps before the production operation is carried out: and fishing out the power driving unit and the pushing pipe.
Aiming at the prior art, the invention has the following effects:
1. the oil-gas well is used for compact oil-gas reservoirs, and can communicate with the stratum more efficiently so as to improve the yield of crude oil or natural gas and increase the flow passage of oil drainage or gas so as to improve the yield of the oil-gas well;
2. the application range is wide, and the method can be applied to the development of old oil wells, marginal oil fields, high and low permeability oil fields and the like;
3. Simple structure is convenient for construct, and the activity duration is fast, can form more passageways at the low-cost more efficient of certain time within range to the output of release oil gas reservoir.
Drawings
FIG. 1 is a schematic diagram of the construction of the drilling apparatus of the present invention;
FIG. 2 is a schematic view of the drilling apparatus being lowered downhole;
FIG. 3 is a schematic view of the drilling apparatus in operation;
FIG. 4 is a schematic diagram of a stimulation string of the present invention;
FIG. 5 is a schematic diagram of the production operation;
FIG. 6 is a schematic view showing a state where the power driving unit and the push pipe are fished out;
FIG. 7 is a schematic view of a condition of the production string being fished out;
Figure 8 is a flow chart of a method of using a stimulation string of the present invention.
wherein the reference numerals are:
production increasing tubular column 1
Drilling device 11
body 111
Drilled through hole 1111
Check valve mounting port 1112
Guide cavity S
power drive unit 112
push pipe 113
Drilling assembly 114
Check valve 115
Sleeve 12
Conveying device 13
suspended packer 14
pipeline anchoring device 16
pressure increasing valve 17
Detailed Description
The detailed description and technical description of the present invention are further described in the context of a preferred embodiment, but should not be construed as limiting the practice of the present invention.
referring to fig. 1-3, fig. 1 is a schematic diagram of a drilling apparatus according to the present invention; FIG. 2 is a schematic view of the drilling apparatus being lowered downhole; fig. 3 is a schematic view of the state of operation of the drilling apparatus. As shown in fig. 1-3, the drilling device 11 of the present invention comprises a body 111, a power driving unit 112, a push tube 113 and a drilling assembly 114; the body 111 is communicated with a sleeve 12 of the production increasing tubular column 1, and a drilling through hole 1111 is formed in the body 111; a power drive unit 112 is disposed in the casing 12; a push pipe 113 is disposed in the body 111, and one end of the push pipe 113 is connected to the power driving unit 112; the drilling assembly 114 is arranged in the drilling through hole 1111, and the other end of the push pipe 113 is connected to the drilling assembly 114; when the drilling device 11 is put into the ground in place, fluid is injected into the casing 12, the power driving unit 112 pushes the pushing pipe 113 to move under the action of the fluid, the pushing pipe 113 pushes the drilling assembly 114 to extend out of the drilling through hole 1111 for drilling the ground, and when the drilling assembly 114 is pushed out of the drilling through hole 1111 for drilling, the pushing pipe 113 is further used for sealing the drilling through hole 1111. In the present embodiment, the power driving unit 112 is used as a power impeller, but the invention is not limited thereto.
it should be noted that in the present embodiment, the number of the power driving unit 112, the pushing tube 113, the drilling assembly 114 and the drilling through hole 1111 is only one, but the present invention is not limited thereto, and in other embodiments, the drilling device 11 may further include a plurality of power driving units 112, a plurality of pushing tubes 113, a plurality of drilling assemblies 114 and a plurality of drilling through holes 1111; a plurality of power drive units 112 are disposed in the casing 12; a plurality of thrust pipes 113 are arranged in the body 111, and one end of each thrust pipe 113 is connected to each power driving unit 112 in a one-to-one correspondence manner; the plurality of drilling combinations 114 are correspondingly arranged in the plurality of drilling through holes 1111 one by one, and the other end of each thrust tube 113 is correspondingly connected to each drilling combination 114 one by one; when the drilling device 11 is put into the formation, fluid is injected into the casing 12, each power driving unit 112 correspondingly pushes the pushing pipe 113 to move under the action of the fluid, and each pushing pipe 113 correspondingly pushes the drilling assembly 114 to extend out of the drilling through hole 1111 for formation drilling, wherein the number of the power driving units 112, the pushing pipes 113, the drilling assemblies 114 and the drilling through holes 1111 is 3 or 4 in a preferred embodiment.
further, the body 111 has a guide cavity S with a large diameter, the drilling through hole 1111 is communicated with the guide cavity S, the push pipe 112 is disposed in the guide cavity S, and the guide cavity S is used for guiding the push pipe 113 along the angle of the drilling through hole 1111.
Still further, the drilling of the through-hole 111 is at an angle, and the drilling assembly 114 performs formation drilling in the direction of the angle of the drilling of the through-hole 111, wherein the angle of drilling the through-hole 111 is preferably between 30 ° and 60 °, but the invention is not limited thereto.
Still further, the body 111 is further provided with a check valve mounting port 1112, the check valve mounting port 1112 is communicated with the guide cavity S, the drilling device 11 further includes a check valve 115, the check valve 115 is mounted on the check valve mounting port 1112, and the fluid outside the body 111 flows back to the guide cavity S and the casing 12 through the check valve 115. A filter (not shown) may be further installed on the check valve 115 to filter the fluid flowing into the check valve 115.
Further, drilling assembly 114 is a turbine drill assembly, and a portion of the fluid in casing 12 that provides drilling power to the turbine drill assembly enters pusher tube 113, and the turbine drill assembly drills the formation under the influence of the fluid.
In another embodiment of the invention, drilling assembly 114 is a hydraulic washout assembly, and fluid in casing 12 is forced into the hydraulic washout assembly through impulse pipe 113, and the hydraulic washout assembly injects the fluid for formation drilling.
referring to FIG. 4, FIG. 4 is a schematic diagram of a stimulation string according to the present invention. As shown in fig. 4, a stimulation string 1 of the present invention includes: a plurality of drilling devices 11, a plurality of casings 12, a conveying device 13 and a suspended packer 14; a suspended packer 14 is connected to the conveying device 13, one of the plurality of casings 12 is connected to the suspended packer 14, and the plurality of casings 12 are cross-connected with the plurality of drilling devices 11. Wherein, the conveying device 13 is a drill rod or an oil casing which is a channel for sending the production increasing pipe column in place and circulating fluid; the suspended packer 14 is used for setting and suspending the whole production increasing pipe column, and can be set and suspended hydraulically, and the suspended packer 14 can be set and suspended mechanically after the production increasing operation is finished; a plurality of drilling devices are arranged on one pipe column, and after circulation and pressure are built, all the drilling devices perform drilling operation simultaneously.
further, the stimulation string 1 further includes a plurality of pipeline anchoring devices 16 respectively disposed on the plurality of casings 12, wherein the pipeline anchoring devices 16 are pipeline anchors for fixing the entire string and preventing the string from moving, and a plurality of pipeline anchors are installed on the entire string as required, and the pipeline anchors may be hydraulic centralizers, and the hydraulic centralizers extend out and are anchored to the well wall by pressing, but the invention is not limited thereto.
Still further, the stimulation string 1 also has a booster valve 17 connected to the drilling apparatus 11 at the bottom, the booster valve 17 being a string circulation path that can raise the string pressure by increasing the displacement, for setting the suspended packer 14 and the line anchoring device 16, and providing a circulation pressure of fluid in the push tube 113.
Referring to FIGS. 4-5, the operation of the stimulation string 1 of the present invention will now be described in detail with reference to FIG. 4, after completion of drilling operations:
1. Assembling the production increasing pipe column 1 according to the construction design, and putting in place;
2. injecting a circulating fluid into the stimulation string to establish circulation and increase the discharge capacity, establishing pressure in the stimulation string through a booster valve 17, and setting and hanging a hanging packer 14 and all pipeline anchoring devices 16 on the string;
3. All the power driving units 112 push against the respective pushing pipes 113 to move under the action of the circulating fluid, the pushing pipes 113 correspondingly push the drilling through holes 1111 in the drilling assembly 114 to extend out, and because the fluid circulates in the pushing pipes 113, the drilling assembly 114 performs formation drilling under the action of the circulating fluid, when all the pushing pipes 113 completely extend out of the drilling through holes 1111, the radial drilling operation is completed, and the state after the radial drilling operation is completed is shown in fig. 3;
4. Acid liquor can be further injected to acidify the whole main well and the sidetrack slim hole;
5. the production increasing pipe column is pressed down or rotated, the suspended packer is set, and the production operation is directly switched to.
It should be noted that when the production operation is performed, production can be performed without fishing out the push pipe 113 and the power drive unit 112, and the fluid exits the well through the check valve 115; in another embodiment of the present invention, fig. 6 is a schematic diagram illustrating a state of fishing out the power driving unit and the pushing pipe, in this embodiment, when the production operation is performed, the pushing pipe 113 and the power driving unit 112 can be fished out of the well for production; in yet another embodiment of the present invention, as shown in FIG. 7, FIG. 7 is a schematic view showing the production string being fished out, and when the production string is shifted to production, the suspended packer may be unset, the entire production string 1 is taken out, only the main well J and the sidetrack small well J are reserved in FIG. 6, and another set of special purpose strings for sand control or water control is put in for production.
Referring to FIG. 8, FIG. 8 is a flow chart of a method of using the stimulation string of the present invention. As shown in FIG. 8, the method of using the stimulation string of the present invention includes the steps of:
Step S1: assembling a production increasing pipe column according to a construction design;
Step S2: putting a production increasing tubular column in place;
Step S3: injecting fluid into the stimulation string, establishing pressure in the stimulation string, and fixing the stimulation string, wherein in the step, the pressure is established in the stimulation string through a booster valve, and a hanging packer and a pipeline anchoring device on the string are hung;
Step S4: the drilling device drills under the action of fluid, wherein in the step, the power driving unit correspondingly pushes the pushing pipe against under the action of the fluid to move, the pushing pipe correspondingly pushes the drilling combination to extend out of the drilling through hole, meanwhile, the drilling combination drills stratum under the action of the fluid in the pushing pipe, and when the pushing pipe completely extends out of the drilling through hole, the drilling operation is finished;
Step S7: and (5) transferring to production operation.
Wherein, before the production operation is switched to, the method also comprises the following steps:
step S5: injecting acid liquor, and carrying out acidizing treatment on the whole main well and the sidetracking slim well;
step S6: the production increasing pipe column is pressed down or rotated, and the hanging packer is set.
in another embodiment of the present application method, before transferring to a production operation, the method further comprises: fishing out the production increasing pipe column; or in another embodiment of the use method, before the operation is shifted to the production operation, the method further comprises the following steps: and fishing out the power driving unit and the pushing pipe.
In conclusion, the drilling device and the production increasing tubular column can be used for compact oil and gas reservoirs, and can be used for communicating the stratum more efficiently so as to improve the yield of crude oil or natural gas and increase the circulation channel of oil drainage or gas so as to improve the yield of oil and gas wells; the application range is wide, and the method can be applied to the development of old oil wells, marginal oil fields, high and low permeability oil fields and the like; simple structure is convenient for construct, and the activity duration is fast, can form more passageways at the low-cost more efficient of certain time within range to the output of release oil gas reservoir.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. A drilling apparatus adapted for use with a stimulation string, the drilling apparatus comprising:
The body is communicated with a sleeve of the production increasing tubular column, and at least one drilling through hole is formed in the body;
At least one power driving unit arranged in the sleeve;
The pushing pipe is arranged in the body, and one end of each pushing pipe is correspondingly connected with each power driving unit;
the drilling combination is correspondingly arranged in the drilling through hole, and the other end of each pushing pipe is correspondingly connected with each drilling combination;
And after the drilling device is put into the stratum to reach the position, fluid is injected into the sleeve, the power driving unit correspondingly pushes the pushing pipe to move under the action of the fluid, and the pushing pipe correspondingly pushes the drilling combination to extend out of the drilling through hole so as to drill the stratum.
2. The drilling device of claim 1, wherein the body has a guide cavity with a large diameter, the drilling through-hole communicates with the guide cavity, and the thrust tube is disposed in the guide cavity.
3. the drilling apparatus of claim 1, wherein the drilling through-hole has an angle, and wherein the drilling assembly drills the formation in the direction of the angle of the drilling through-hole.
4. the drilling apparatus of claim 1, wherein the body further comprises a one-way valve mounting port, the drilling apparatus further comprising a one-way valve mounted on the one-way valve mounting port, and wherein fluid located outside the body flows back into the body and the casing through the one-way valve.
5. The drilling apparatus of claim 4, wherein the one-way valve is further provided with a filter screen for filtering fluid flowing into the one-way valve.
6. The drilling apparatus of claim 1, wherein the power drive unit is a power impeller.
7. The drilling apparatus of claim 1, wherein the drilling assembly is a turbo-drilling assembly, and wherein the fluid in the casing is conveyed to the turbo-drilling assembly by the pusher tube, and wherein the turbo-drilling assembly is configured to drill the formation under the influence of the fluid.
8. the drilling apparatus of claim 1, wherein the drilling assembly is a hydraulic erosion assembly, the fluid in the casing being delivered to the hydraulic erosion assembly by the pusher tube, the hydraulic erosion assembly injecting the fluid for formation drilling.
9. a stimulation string comprising a conveying means, a suspension packer connected to the conveying means, a plurality of casings, one of the plurality of casings connected to the suspension packer, a plurality of casings in staggered connection with the plurality of drilling means, a plurality of pipeline anchoring means, and a plurality of drilling means according to any one of claims 1 to 8.
10. the stimulation string of claim 9, further comprising a plurality of pipeline anchoring devices disposed on a respective plurality of the casings.
11. The stimulation string of claim 9, further comprising a pressurization valve coupled to the drilling apparatus at the bottom.
12. the stimulation string of claim 9, wherein the delivery device is a drill pipe or an oil casing.
13. a method of using a stimulation string for use in a stimulation string according to any of claims 9-12, comprising the steps of:
Assembling a production increasing pipe column according to a construction design;
running the production increasing pipe column in place;
Injecting fluid into the stimulation string, building pressure in the stimulation string, setting and hanging a hanging packer and a pipeline anchoring device, and fixing the stimulation string;
The drilling device drills under the action of fluid;
And (5) transferring to production operation.
14. use according to claim 13, characterized in that it comprises, before being transferred to production, the following further steps:
Injecting acid liquor, and carrying out acidizing treatment on the whole main well and the sidetracking slim well;
And pressing or rotating the drill pipe or the oil casing pipe to set the suspension packer.
15. The method of use of claim 13, further comprising establishing pressure in the stimulation string via a pressurization valve and setting the hanging packer and the pipeline anchoring device.
16. The method of use of claim 13, wherein the power drive unit is adapted to move the pusher tube against the pusher tube in response to the fluid, the pusher tube adapted to advance the drilling assembly out of the drilling opening in response to the fluid, and wherein the drilling assembly is adapted to drill the formation in response to the fluid in the pusher tube, and wherein the drilling operation is completed when the pusher tube is fully extended out of the drilling opening.
17. The use of claim 13, prior to transfer to production, further comprising: and fishing out the production increasing pipe column.
18. The use of claim 16, prior to transfer to production, further comprising: and fishing out the power driving unit and the pushing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810548697.4A CN110552628A (en) | 2018-05-31 | 2018-05-31 | Drilling device, stimulation string with drilling device and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810548697.4A CN110552628A (en) | 2018-05-31 | 2018-05-31 | Drilling device, stimulation string with drilling device and using method |
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| CN110552628A true CN110552628A (en) | 2019-12-10 |
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| CN201810548697.4A Pending CN110552628A (en) | 2018-05-31 | 2018-05-31 | Drilling device, stimulation string with drilling device and using method |
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