CN106703720A - Well drilling device with steel wire transmission function - Google Patents
Well drilling device with steel wire transmission function Download PDFInfo
- Publication number
- CN106703720A CN106703720A CN201611095249.0A CN201611095249A CN106703720A CN 106703720 A CN106703720 A CN 106703720A CN 201611095249 A CN201611095249 A CN 201611095249A CN 106703720 A CN106703720 A CN 106703720A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- wire rope
- drill bit
- connecting rod
- drilling rig
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 89
- 239000010959 steel Substances 0.000 title claims abstract description 89
- 238000005553 drilling Methods 0.000 title claims abstract description 59
- 230000005540 biological transmission Effects 0.000 title abstract description 4
- 239000011435 rock Substances 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000004804 winding 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/084—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
-
- 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
-
- 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
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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)
- Earth Drilling (AREA)
Abstract
The invention provides a well drilling device with a steel wire transmission function. The well drilling device comprises a steel wire rope (8), a high-pressure hose (7) and a drill bit (12). The high-pressure hose (7) sleeves the steel wire rope (8), the drill bit (12) is arranged at an end of the steel wire rope (8), torque can be transmitted to the drill bit (12) by the steel wire rope (8), and the drill bit (8) can be driven by the steel wire rope (8) to rotate to break rock. The steel wire rope is mounted in the high-pressure hose, the upper end of the steel wire rope is connected with a screw drilling tool, and the lower end of the steel wire rope is connected with the drill bit by a hollow connecting rod with threads; the torque generated when the screw drilling tool rotates can be transmitted to the drill bit by the steel wire rope during drilling; high-pressure fluid can flow into the hollow connecting rod via gaps between the high-pressure hose and steel wires and can be ejected from the drill bit, and accordingly the rock can be jointly broken hydraulically and mechanically. The well drilling device has the advantages that the shortcoming of difficulty in providing bit pressures and torque to existing drill bits by existing high-pressure hoses can be overcome, the mechanical drilling speed can be obviously increased, and the rock breaking efficiency can be obviously improved; the well drilling device is simple in structure and is safe and reliable during use.
Description
Technical field
The present invention relates to drilling technology field, a kind of particularly drilling rig of steel wire drive.
Background technology
Super short radius horizontal well technology most proposes early in the eighties in 20th century, is initially applied to old well reform, improves
The aspects such as recovery ratio, current super short radius horizontal well has been widely used in sidetracking Multilateral Wells, and develops into and pressure
Split connection to make, oil gas well capacity is significantly improved, as one of agent for improving oilfield recovery effective means.The know-why is continuous
In oil pipe technical foundation, be equipped with special crucial drilling tool (mainly including flow jet flow drill, track control device, reamer and
Steering gear etc.), the corresponding Reservoir Section of main borehole is being drilled to, get out one layer to the radial branch's Microdrilling of multilayer, Jin Erti
Oil well capacity high.Additionally, the beginning of this century, researcher is proposed using flexible composite high-pressure flexible pipe higher as branch
The drilling rod of well, and improve the design of steering gear so that operating system can realize not reaming, and not reaming is realized in main borehole
Turn to.
By the development of nearly 30 years, super short radial horizontal well technology achieved rapid progress, yet with boring principle with
And the reason such as the characteristics of equipment itself so that no matter when being crept into using coiled tubing or high-pressure hose, have unavoidably
Problem, such as conventional super short radius horizontal well drilling technology needs first to forge milling sleeve pipe, then major diameter reaming, complex process,
Success rate is low, and duty cycle is long, larger to casing damage；When using conventional radial well technical operation, due to high-pressure hose axle
It is weak to power (the pressure of the drill) transmission capacity, and be difficult for mechanical rock breaking drill bit the pressure of the drill is provided, therefore pure water power drilling is only relied on, but by soft
Pipe size is limited, and hydraulic energy is limited, so that it cannot realize efficient rock-breaking and enter to extend certainly.How limited discharge capacity reality is utilized
Now efficient efficiency of breaking rock and as far as possible increase the horizontal drilling depth of radial well be water-jet sidetracking radially horizontal well technology still face
To subject matter.
The content of the invention
In order to overcome high-pressure hose to be difficult for the defect that drill bit provides the pressure of the drill and moment of torsion needed for broken rock, the invention provides one
The drilling rig of steel wire drive is planted, the drilling rig of the steel wire drive can be real under conditions of existing process and equipment is not changed
Efficiency of breaking rock and the horizontal drilling depth of larger radial well now higher.Additionally, the drilling rig design of the steel wire drive is simple and reliable,
Ensure that the safe and efficient development of underground work.
The technical solution adopted for the present invention to solve the technical problems is：A kind of drilling rig of steel wire drive, including steel
Cord, high-pressure hose and drill bit, high-pressure hose are sheathed on outside steel wire rope, and drill bit is arranged at one end of steel wire rope, and steel wire rope can
Deliver torque to drill bit and make bit broken rock.
The drilling rig of the steel wire drive is also including helicoid hydraulic motor, piston, hollow connecting rod, connector and thrust bearing etc.
It is sequentially connected composition.
Wherein piston is placed on helicoid hydraulic motor, and piston can drive helicoid hydraulic motor to transport downwards in the presence of high-pressure fluid
It is dynamic, and then the deadweight of motive force and helicoid hydraulic motor by piston applies the pressure of the drill for the drill bit of bottom.Steel wire rope is placed in high pressure
In flexible pipe, upper end is connected with helicoid hydraulic motor, and lower end is connected by hollow connecting rod with drill bit, therefore helicoid hydraulic motor rotation generation
Moment of torsion can be by wire rope transfers to drill bit, so overcoming because high-pressure hose is difficult for needed for drill bit offer broken rock
The deficiency of moment of torsion, can significantly improve drill bit rate of penetration and efficiency of breaking rock again.High-pressure fluid passes through between high-pressure hose and steel wire
Gap, into hollow connecting rod, being sprayed from drill bit carries out broken rock and cutting carring, so relative to relying on waterpower merely before this
Broken rock, the invention can realize waterpower and mechanically combining broken rock.Therefore, during drilling well, ground drilling pump only needs to provide cutting carring
Required pressure, and then the pressure of whole well system can be reduced, make high-pressure hose more easily by steering gear.Additionally, bottom
Drill bit is connected by screw thread with hollow connecting rod, and hollow connecting rod is connected by screw thread with connector upper end, connector it is another
One end coordinates with thrust bearing, is so designed to ensure stability and security during drilling work.
The beneficial effects of the invention are as follows：
1st, tool construction is relatively simple, and especially under complicated conditions down-hole, what simple structure ensure that instrument can
By property.
2nd, the design of piston and steel wire rope can overcome high-pressure hose to bear axial force and provide moment of torsion to drill bit
Shortcoming.
3rd, drill bit is crept under steel wire rope drive, can form the radial direction well of regular shape, and can overcome list
The low shortcoming of pure dependence waterpower drilling efficiency of breaking rock.
Drilling pump only needs the pressure needed for providing cutting carring when the 4th, due to drilling, therefore the device can significantly reduce waterpower
Energy, and then greatly reduce the pressure of well system.
5th, the pressure reduction of whole well system, resistance when contributing to high-pressure hose to overcome steering gear can be by height
Pressure flexible pipe is sent into stratum certain distance, considerably increases the extension limit of radially horizontal well.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.
Fig. 1 is the drilling philosophy schematic diagram of the drilling rig of steel wire drive.
Fig. 2 is the front view of the drilling rig of steel wire drive.
Fig. 3 is the generalized section of the drilling rig of steel wire drive.
Fig. 4 is the connection diagram at drill bit position.
1st, steering gear；2nd, tubing anchor；3rd, sleeve pipe；4th, oil pipe；5th, piston；6th, helicoid hydraulic motor；7th, high-pressure hose；8th, steel wire
Rope；9th, hollow connecting rod；10th, connector；11st, thrust bearing；12nd, drill bit.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of drilling rig of steel wire drive, including steel wire rope 8, high-pressure hose 7 and drill bit 12, high-pressure hose 7 are sheathed on
Outside steel wire rope 8, drill bit 12 is arranged at one end of steel wire rope 8, and steel wire rope 8 can deliver torque to drill bit 12 and revolve drill bit 12
Turn broken rock, as shown in Figures 1 to 4.
The specific requirement of steel wire rope 8 is can be by moment of torsion and pressure transmission to drill bit 12, so that the rotary drilling of drill bit 12
Broken rock.Those skilled in the art can require that specific design implements size, material and the processing technology of steel wire rope 8 according to this,
Specifically, steel wire rope 8 can be made up of 8 strands of steel tendons in cross winding mode, general to bore under the borehole condition of one-inch half, steel wire rope
8 diameter can select 8mm~12mm, and the drilling rig of steel wire drive can be real under conditions of existing process and equipment is not changed
Efficiency of breaking rock and the horizontal drilling depth of larger radial well now higher.
In the present embodiment, one end of steel wire rope 8 is connected by hollow connecting rod 9 with drill bit 12.Hollow connecting rod 9
It is contained within the inner flow passage of insertion vertically, the external diameter of the internal diameter more than steel wire rope 8 of high-pressure hose 7, high-pressure hose 7 and steel wire rope 8
Between be provided with fluid flow cavities, fluid injection orifice is contained in the working end of drill bit 12, and the fluid flow cavities can be in
The inner flow passage of empty connecting rod 9 is connected with the fluid injection orifice, as shown in Figure 4.
In the present embodiment, one end fixed cover of hollow connecting rod 9 is located at outside one end of steel wire rope 8, hollow connecting rod 9
In the afterbody of drill bit 12, the side wall of hollow connecting rod 9 is communicated with the fluid flow cavities with interior stream to other end fixed cover
The through hole in road.One end of high-pressure hose 7 is fixed with the connector 10 of tubular, and connector 10 is sheathed on outside hollow connecting rod 9, connection
First 10 are contained within annular protrusion, and hollow connecting rod 9 coordinates with the annular protrusion gap, the through hole be located at one end of steel wire rope 8 with
Between the annular protrusion.
In the present embodiment, thrust bearing 11 is arranged with outside hollow connecting rod 9, thrust bearing 11 is located in connector 10,
Thrust bearing 11 is arranged between the annular protrusion and drill bit 12, and outer ring and the connector 10 of thrust bearing 11 are connected, only
The inner ring of thrust bearing 11 is connected with hollow connecting rod 9, and the inner ring of thrust bearing 11 is abutted with drill bit 12.
In the present embodiment, the drilling rig of the steel wire drive also includes that the driving machine of moment of torsion can be provided to steel wire rope 8
Structure.The drive mechanism is helicoid hydraulic motor 6, and the other end of steel wire rope 8 is connected with helicoid hydraulic motor 6, helicoid hydraulic motor 6 and high-pressure hose 7
Connection.Piston 5 is arranged with outside helicoid hydraulic motor 6.The drilling rig of the steel wire drive also includes steering gear 1, and the upper end of steering gear 1 connects
Oil pipe 4 is connected to, helicoid hydraulic motor 6 and piston 5 may be contained within oil pipe 4, external diameter and the internal diameter of oil pipe 4 of piston 5 match, steel wire
Rope 8 and lower end of the high-pressure hose 7 with helicoid hydraulic motor 6 are connected.
The course of work of the drilling rig of the steel wire drive is introduced below in conjunction with the accompanying drawings.
In Fig. 1, steering gear 1 is fixed on underground precalculated position by oil pipe 4, and the tubing anchor 2 of bottom is overall can be consolidated
It is scheduled on sleeve pipe 3, can so ensures the security and stability during underground work；Helicoid hydraulic motor 6 by screw thread respectively with steel
Cord 8, high-pressure hose 7 are connected, and piston 5 is fixed on helicoid hydraulic motor 6 in advance；Steel wire rope 8 in high-pressure hose 7, steel wire rope 8
Lower end be connected with hollow connecting rod 9 by screw thread, hollow connecting rod 9 by clearance seal pass through connector 10, and with
Thrust bearing 11 is engaged, and the other end of hollow connecting rod 9 is connected with drill bit 12；Under the drilling rig of the steel wire drive is smooth
When entering to carry out operation, high-pressure fluid is entered by the gap (fluid flow cavities) between high-pressure hose 6 and steel wire rope 8
Inner flow passage in hollow connecting rod 9, broken rock is sprayed from drill bit 12 (fluid injection orifice)；During drilling, piston 5 can be in high-pressure spray
Body effect is lower to drive helicoid hydraulic motor 6 to move downward, therefore motive force and the deadweight of top drilling tool can be applied to by steel wire rope 8
On bottom broken rock drill bit 12, overcome high-pressure hose 7 to transmit the defect of axial force (or the pressure of the drill), and then greatly improve broken rock effect
Rate；And the steel wire rope 8 in high-pressure hose 7, because top is connected with helicoid hydraulic motor 6, bottom is connected with hollow connecting rod 9, therefore bores
The moment of torsion that helicoid hydraulic motor 6 is produced can be passed to broken rock drill bit 12 when entering, it is real under conditions of existing process and equipment is not changed
Now efficient waterpower and mechanically combining broken rock, significantly reduce the pressure of well system, promote high-pressure hose 7 to overcome in elevated pressures
Resistance when steering gear 1, and then be easier to extend to reservoir.
As shown in Figures 2 and 3, when will enter under drilling tubing string string, because deadweight high-pressure hose 6 is on the whole vertical elongate
State, and when entering steering gear 1, due to being limited by steering gear 1, high-pressure hose 6 from principal curvature to realize turning to, and then can be arrived
Up to specified location；Additionally, Fig. 3 reflects the way of realization of steel wire drive, the device is main by high-pressure hose 7, and steel wire rope 8 connects
Joint 10, hollow connecting rod 9 and the grade of drill bit 12 connection composition；Super short radius horizontal well drilling device, steel before contrast
The design of cord 8, helps to overcome the shortcomings of that high-pressure hose 7 is difficult for the transmitting torque of drill bit 12, and then realize efficiently drilling；This
Outward, drill bit 12 is crept into the case where the moment of torsion that steel wire rope 8 is transmitted drives, and can break away from the hydraulic energy institute when being crept into by pure water
It is restricted, reduces loine pressure, reduce the steering drag of high-pressure hose 7, so as to further extend to stratum, improves ultra-short radius
The extension ability of radially horizontal well.
Figure 4, it is seen that the high-pressure hose 7 in outside is connected with connector 10；Thrust bearing 11 and hollow connecting rod 9
Coordinate, hollow connecting rod 9 is connected with steel wire rope 8 and drill bit 12 respectively by screw thread, while thrust bearing 11 is limited in into connection
On first 10,；By such design, the moment of torsion that top produces efficiently can be passed to bottom drill bit 12 by steel wire rope 8, and
Driving drill bit 12 carries out mechanical rock breaking, and then can form the relatively regular radial direction well of shape, and can overcome and rely on water merely
The low shortcoming of power drilling efficiency of breaking rock；Meanwhile, when high-pressure fluid is full of in high-pressure hose, can be by piston 5 and the institute of helicoid hydraulic motor 6
The pressure of the drill of generation is applied on drill bit 12, efficient rock-breaking；It is hollow inside hollow connecting rod 9, therefore, in drilling well, ground is bored
High-pressure fluid is pumped into well pump the gap between high-pressure hose 7 and steel wire rope 8, through the eyelet of the upper end of hollow connecting rod 9, flows through brill
Head nozzle, realizes jet broken rock and cutting carring, afterwards by high-pressure hose 7 and the annular space of radial well, above returns to ground.
The above, specific embodiment only of the invention, it is impossible to the scope that its restriction invention is implemented, so it is equivalent
The displacement of component, or the equivalent variations made according to scope of patent protection of the present invention and modification, should all still fall within what this patent was covered
Category.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical scheme, technical scheme with
Can be used with independent assortment between technical scheme.
Claims (9)
1. a kind of drilling rig of steel wire drive, it is characterised in that the drilling rig of the steel wire drive includes steel wire rope (8), high
Pressure flexible pipe (7) and drill bit (12), high-pressure hose (7) are sheathed on steel wire rope (8) outward, and drill bit (12) is arranged at the one of steel wire rope (8)
End, steel wire rope (8) can deliver torque to drill bit (12) and drill bit (12) is rotated broken rock.
2. the drilling rig of steel wire drive according to claim 1, it is characterised in that during one end of steel wire rope (8) passes through
Empty connecting rod (9) is connected with drill bit (12).
3. the drilling rig of steel wire drive according to claim 2, it is characterised in that hollow connecting rod (9) is contained within edge
Axially through inner flow passage, the internal diameter of high-pressure hose (7) more than steel wire rope (8) external diameter, high-pressure hose (7) and steel wire rope (8)
Between be provided with fluid flow cavities, fluid injection orifice is contained in the working end of drill bit (12), and the fluid flow cavities can pass through
The inner flow passage of hollow connecting rod (9) is connected with the fluid injection orifice.
4. the drilling rig of steel wire drive according to claim 3, it is characterised in that one end of hollow connecting rod (9) is consolidated
Surely it is sheathed on outside one end of steel wire rope (8), the other end fixed cover of hollow connecting rod (9) is located in the afterbody of drill bit (12), in
The side wall of empty connecting rod (9) is communicated with the through hole of the fluid flow cavities and inner flow passage.
5. the drilling rig of steel wire drive according to claim 4, it is characterised in that one end of high-pressure hose (7) is fixed
There is the connector (10) of tubular, connector (10) is sheathed on hollow connecting rod (9) outward, and connector (10) is contained within annular protrusion,
Hollow connecting rod (9) coordinates with the annular protrusion gap, and the through hole is located between one end of steel wire rope (8) and the annular protrusion.
6. the drilling rig of steel wire drive according to claim 5, it is characterised in that be arranged with outside hollow connecting rod (9)
Thrust bearing (11), in connector (10), thrust bearing (11) is arranged at the annular protrusion and drill bit to thrust bearing (11)
(12) between, outer ring and the connector (10) of thrust bearing (11) are connected, inner ring and the hollow connection of thrust bearing (11)
Bar (9) is connected, and the inner ring of thrust bearing (11) is abutted with drill bit (12).
7. the drilling rig of steel wire drive according to claim 1, it is characterised in that the drilling rig of the steel wire drive is also
Drive mechanism including moment of torsion can be provided to steel wire rope (8).
8. the drilling rig of steel wire drive according to claim 7, it is characterised in that the drive mechanism is helicoid hydraulic motor
(6), the other end of steel wire rope (8) is connected with helicoid hydraulic motor (6), and helicoid hydraulic motor (6) is connected with high-pressure hose (7).
9. the drilling rig of steel wire drive according to claim 8, it is characterised in that be arranged with work outside helicoid hydraulic motor (6)
Plug (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611095249.0A CN106703720B (en) | 2016-12-02 | 2016-12-02 | A kind of drilling rig of steel wire drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611095249.0A CN106703720B (en) | 2016-12-02 | 2016-12-02 | A kind of drilling rig of steel wire drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106703720A true CN106703720A (en) | 2017-05-24 |
| CN106703720B CN106703720B (en) | 2018-11-09 |
Family
ID=58935513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611095249.0A Active CN106703720B (en) | 2016-12-02 | 2016-12-02 | A kind of drilling rig of steel wire drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703720B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939318A (en) * | 2017-11-30 | 2018-04-20 | 中国石油大学(北京) | Local under balance pressure drilling reflux |
| CN111827946A (en) * | 2020-08-10 | 2020-10-27 | 广州海洋地质调查局 | Barefoot fishbone yield increase and sieve tube well completion construction process |
| CN111982623A (en) * | 2020-08-14 | 2020-11-24 | 中国科学院地质与地球物理研究所 | Perforation processing system for fracturing test |
| CN113737801A (en) * | 2021-09-23 | 2021-12-03 | 安徽省城建基础工程有限公司 | Enlarged footing construction equipment |
| CN113737802A (en) * | 2021-09-23 | 2021-12-03 | 安徽省城建基础工程有限公司 | Construction method of enlarged footing |
| CN115162954A (en) * | 2022-06-07 | 2022-10-11 | 西安石油大学 | Device and method for improving rock breaking efficiency of radial horizontal well |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939318A (en) * | 2017-11-30 | 2018-04-20 | 中国石油大学(北京) | Local under balance pressure drilling reflux |
| CN111827946A (en) * | 2020-08-10 | 2020-10-27 | 广州海洋地质调查局 | Barefoot fishbone yield increase and sieve tube well completion construction process |
| CN111827946B (en) * | 2020-08-10 | 2023-12-22 | 广州海洋地质调查局 | Naked fish bone spur yield increasing and screen pipe well completion construction process |
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| CN113737801A (en) * | 2021-09-23 | 2021-12-03 | 安徽省城建基础工程有限公司 | Enlarged footing construction equipment |
| CN113737802A (en) * | 2021-09-23 | 2021-12-03 | 安徽省城建基础工程有限公司 | Construction method of enlarged footing |
| CN113737801B (en) * | 2021-09-23 | 2022-08-02 | 安徽省城建基础工程有限公司 | Enlarged footing construction equipment |
| CN115162954A (en) * | 2022-06-07 | 2022-10-11 | 西安石油大学 | Device and method for improving rock breaking efficiency of radial horizontal well |
| CN115162954B (en) * | 2022-06-07 | 2023-08-22 | 西安石油大学 | Device and method for improving rock breaking efficiency of radial horizontal well |
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| CN106703720B (en) | 2018-11-09 |
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