CN110217733A - A kind of coal bed gas, oil gas down-hole string lifting means - Google Patents
A kind of coal bed gas, oil gas down-hole string lifting means Download PDFInfo
- Publication number
- CN110217733A CN110217733A CN201910379303.1A CN201910379303A CN110217733A CN 110217733 A CN110217733 A CN 110217733A CN 201910379303 A CN201910379303 A CN 201910379303A CN 110217733 A CN110217733 A CN 110217733A
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- horizontal bracket
- hole
- support frame
- coal bed
- hoisting mechanism
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
- B66F13/005—Thrust chain devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses a kind of coal bed gas, oil gas down-hole string lifting means, including support frame, it is successively arranged upper horizontal bracket, middle horizontal bracket and lower horizontal bracket from top to bottom on support frame, it is fixed in upward through-hole to the upper contactless distance measuring sensor for penetrating setting, is fixed on middle horizontal bracket in oriented middle through-hole to penetrating contactless distance measuring sensor in setting on upper horizontal bracket；It is equipped on lower horizontal bracket for the lower through-hole across sucker rod or oil pipe, is fixed on lower horizontal bracket into lower through-hole to penetrating contactless distance measuring sensor under setting；It horizontally slips between upper horizontal bracket and middle horizontal bracket, between middle horizontal bracket and lower horizontal bracket and is connected with clamping lifting device；The present invention recycles down-hole string using two groups of mutually matched caterpillar elevator structures and clamps, to avoid using the common complicated large-scale lifting appliance of original conventional oil gas well.
Description
Technical field
The invention belongs to coal bed gas and oil gas development technology field, in particular to a kind of coal bed gas, oil gas down-hole string mention
Rise equipment.
Background technique
Coal bed gas is the fuel gas that a kind of main component is methane, is usually adsorbed in coal particle surface, is free on coal hole
It gap and is dissolved in coal seam water, is the accompaniment of coal.In China, the reserves very abundant of coal bed gas, ranks the third of the world, gathers around
There is huge potentiality to be exploited.Coal bed gas is a kind of clean energy resource, and under the main trend of current environmental protection and coal mining is pressed safely
Under power, Devoting Major Efforts To Developing coal bed gas resource is imperative.
Currently, generalling use the matched equipment of conventional oil gas-field exploitation in mining of coal bed gas field carries out extraction, inspection
It repairs, safeguard, the fact shallower relative to conventional oil gas well coal bed gas well well bore, if still matched using conventional oil gas-field exploitation
Equipment will cause that energy consumption is big, operational efficiency is low, equipment is heavy, cause coal-bed gas exploitation higher cost.
Wherein coal bed gas well repair apparatus is exactly a typical example, and a professional upkeep operation vehicle is needed (to belong to
Special equipment), a teams and groups need to be equipped with 10 workers (professional qualification, take appointment with certificate) or more, manage a professional maintenance
Troop's cost is very high, causes the cost of inspection-pit also very high.Reality is for save the cost, and small coal bed gas company is not set up certainly
Oneself professional upkeep operation troop reproduces when needing workover treatment and looks for upkeep operation troop, it is possible to just delay production；Also
Have that exactly professional workover treatment is simply equipped or there are many equipment fault, there are also be exactly that personnel's letter is matched, or has professional qualification
Personnel are less.
Summary of the invention
It is a kind of in coal bed gas well object of the present invention is to be proposed to solve above-mentioned problems of the prior art
The lifting means and method for improving that tubing string is overhauled；It is adopted the technical scheme that in order to achieve the above objectives:
A kind of coal bed gas, oil gas down-hole string lifting means, including support frame, are successively arranged from top to bottom on support frame
Upper horizontal bracket, middle horizontal bracket and lower horizontal bracket are equipped on upper horizontal bracket for across sucker rod or oil pipe
Through-hole is fixed in upward through-hole to the upper contactless distance measuring sensor for penetrating setting on upper horizontal bracket；In middle horizontal branch
Frame is equipped with for the middle through-hole across sucker rod or oil pipe, is fixed in oriented middle through-hole on middle horizontal bracket to penetrating setting
In contactless distance measuring sensor；It is equipped on lower horizontal bracket for the lower through-hole across sucker rod or oil pipe, in lower level
It is fixed on bracket into lower through-hole to penetrating contactless distance measuring sensor under setting；
It horizontally slips and is connected between upper horizontal bracket and middle horizontal bracket, between middle horizontal bracket and lower horizontal bracket
Lifting device is clamped, the clamping lifting device includes the horizontally slip left hoisting mechanism and right hoisting mechanism of movement, is mentioned on a left side
It rises mechanism and right hoisting mechanism bottom is equipped with the threaded hole being arranged in left-right direction, and left hoisting mechanism and right hoisting mechanism spiral shell
Pit screw thread is contrary, and the power lead screw across threaded hole, a left side on the power lead screw are rotatably connected on support frame
Right two-part hand of spiral on the contrary, be fixed with the first servo motor for driving power lead screw to rotate on support frame,
The rotation of power lead screw rotation drives left hoisting mechanism and right hoisting mechanism to intermediary movements for sucker rod or oil pipe
Clamping and promotion.
Preferably, the left hoisting mechanism includes support frame, is vertically equipped with driving wheel and inducer on the support frame, around
Driving wheel and inducer are connected with load-bearing crawler belt, side by side up and down on the right side of driving wheel and inducer to be equipped with multiple carrying rollers, are holding
The load-bearing crawler belt state in a vertical shape being located at multiple carrying roller positions in weight crawler belt rotation process；The load-bearing crawler belt is by multiple shoes
Band plate is successively articulated and connected, hinged by articulated shaft between two neighboring creeper tread, is equipped on creeper tread for increasing
The anti-skid chequer of frictional force is equipped with the second servo motor for driving driving wheel to rotate on the support frame.
Preferably, anti-falling mechanism is equipped on lower horizontal bracket, the anti-falling mechanism includes left anchor ear and right anchor ear,
The left anchor ear and right anchor ear are symmetrically distributed at left and right sides of lower through-hole, the correspondence both ends of left anchor ear and right anchor ear it
Between be equipped with Bidirectional power hydraulic cylinder；It is equipped on lower horizontal bracket contactless to the auxiliary for penetrating setting to sucker rod or oil pipe
Distance measuring sensor, under contactless distance measuring sensor and the contactless distance measuring sensor of auxiliary signal output end and Bidirectional power
The signal input part of hydraulic cylinder controller is connected.
Preferably, it is equipped with workbench at the top of support frame and for climbing the foot of ladder for arriving workbench, is working
It is equipped with fence around platform, the pipe perforation stretched out for sucker rod or oil pipe is equipped among workbench, in workbench
On drive-type hydraulic spanner corresponding with pipe perforation position is installed, the through-hole drive-type hydraulic spanner is used for oil pumping
The disassembly of bar or tubing coupling.
Preferably, it is equipped with horizontal support arm on workbench, fixed pulley is equipped on horizontal support arm.
Preferably, lifting arm and hoist engine are equipped on support frame, drawstring has been equipped on hoist engine, drawstring along
Lifting arm is arranged through the pulley blocks of lifting arm end and dangles in lifting arm end.
Preferably, the lifting arm is multistage telescopic arm.
The advantageous effect of present invention is that: (1) present invention use two group mutually matched caterpillar elevator structures pair
Down-hole string circulation clamping, to avoid using the common complicated large-scale lifting appliance of original conventional oil gas well；
(2) the distance between left hoisting mechanism and right hoisting mechanism can be adaptively adjusted according to underground caliber size, to make
More extensive with range, application is stronger.
(3) the lead screw control opposite by two halves partial threads, realizes left hoisting mechanism and right hoisting mechanism accurately leads to
Cross the effect of centering campaign.
(4) two groups of clamping lifting devices carry out simultaneously to down-hole string or replace holding action up and down, realize underground
Tubing string continues to be moved upwardly or downwardly without interruption.
(5) pass through the setting of double design anti-falling mechanism, either down-hole string is promoting the still process in decentralization
In avoid falling the generation of dangerous situation, to improve the running safety of equipment.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram for clamping lifting device；
Fig. 3 is the structural schematic diagram of anti-falling mechanism.
Specific embodiment
The present invention is further described with reference to the accompanying drawing.
As shown in Figure 1, a kind of coal bed gas, oil gas down-hole string lifting means, including support frame, on support frame certainly
It is successively arranged horizontal bracket 14, middle horizontal bracket 15 and lower horizontal bracket 16 under above, is equipped with and uses on upper horizontal bracket 14
In the upper through-hole 7 for passing through sucker rod or oil pipe, it is fixed on upper horizontal bracket 14 in upward through-hole 7 and non-connects to penetrating the upper of setting
Touch distance measuring sensor 10；It is equipped on middle horizontal bracket 15 for the middle through-hole 5 across sucker rod or oil pipe, in middle horizontal branch
It is fixed on frame 15 in oriented middle through-hole 5 to penetrating contactless distance measuring sensor 6 in setting；It is equipped with and uses on lower horizontal bracket 16
In the lower through-hole 1 for passing through sucker rod or oil pipe, it is fixed on lower horizontal bracket 16 into lower through-hole 1 to penetrating non-under setting connect
Touch distance measuring sensor 4；Upper through-hole 7, middle through-hole 5 and lower through-hole 1 are coaxially disposed.
Between upper horizontal bracket 14 and middle horizontal bracket 15, it is left between middle horizontal bracket 15 and lower horizontal bracket 16
The right side slidably connects clamping lifting device 3, as shown in Fig. 2, the clamping lifting device 3 symmetrically setting including the movement that horizontally slips
The left hoisting mechanism and right hoisting mechanism set are equipped in left hoisting mechanism and right hoisting mechanism bottom and are arranged in left-right direction
Threaded hole, and left hoisting mechanism and right hoisting mechanism threaded hole hand of spiral on the contrary, be rotatably connected on support frame across
The power lead screw 302 of threaded hole, the two-part hand of spiral in left and right on the power lead screw 302 is on the contrary, solid on support frame
Surely (servo motor and electrical accessorie in this equipment are explosion-proof to the first servo motor for having for driving power lead screw 302 to rotate
Design) 301, the rotation of power lead screw 302 drives left hoisting mechanism is synchronous with right hoisting mechanism to move to centre or to two sides,
Clamping and promotion when to intermediary movements to down-hole string.
The left hoisting mechanism includes support frame 306, and driving wheel 305 and inducer are vertically equipped on support frame 306
303, it is connected with load-bearing crawler belt 304 around driving wheel 305 and inducer 303, on the right side of driving wheel 305 and inducer 303 up and down simultaneously
Row is equipped with multiple carrying rollers 307, the load-bearing crawler belt being located at multiple 307 positions of carrying roller in 307 rotation process of load-bearing crawler belt
304 states in a vertical shape；The load-bearing crawler belt 304 is successively articulated and connected by multiple creeper treads, between two neighboring creeper tread
It is hinged by articulated shaft, it is equipped with the anti-skid chequer for increasing friction force on creeper tread, is equipped on support frame 306 for driving
The second servo motor that driving wheel 305 rotates.
Falling in abnormal condition lower sucker rod or oil pipe in order to prevent is equipped with fall arrest machine on lower horizontal bracket 16
Structure 2, as shown in figure 3, the anti-falling mechanism includes left anchor ear 202 and right anchor ear 203, the left anchor ear 202 and right anchor ear 203
It is symmetrically distributed in 1 left and right sides of lower through-hole, is equipped between left anchor ear 202 and the correspondence both ends of right anchor ear 203 double
To power hydraulic cylinder 201；It is equipped with to sucker rod or oil pipe on lower horizontal bracket 16 to the contactless ranging of the auxiliary for penetrating setting
Sensor 17, under the signal output end of contactless distance measuring sensor 4 and the contactless distance measuring sensor 17 of auxiliary and two-way dynamic
The signal input part of 201 controller of power hydraulic cylinder is connected.
In order to enhance or by carry out underground installation decentralization sucker rod or oil pipe carry out next step corresponding operation,
It is equipped with workbench 13 at the top of support frame and for climbing the foot of ladder for arriving workbench 13, is set around workbench 13
There is fence, the pipe perforation 9 stretched out for sucker rod or oil pipe is equipped among workbench, is equipped on workbench 13
Drive-type hydraulic spanner corresponding with 9 position of pipe perforation, the through-hole drive-type hydraulic spanner are used for sucker rod or oil
The disassembly of pipe box cupling.
It is directly provided with horizontal support arm 12 on workbench 13, is designed from workbench 13 to the supporter of workbench 12
Can freely to stretch, in order to transport and the adaptability of down-hole string, fixed pulley 11 is equipped on horizontal support arm 12, drawstring 8 is logical
The binding of 11 one end of fixed pulley is crossed on down-hole string, the other end manually pulls or use hoist engine.
In the use of the present invention, lifting means of the present invention is located on coal bed gas well or oil and gas wellhead, with down-hole casing
It is fixed on the positioning, allows through-hole 7, middle through-hole 5 and lower through-hole 1 and well head coaxial alignment, then first servo motor 301 acts
Power lead screw 302 is driven to rotate, to drive left hoisting mechanism and right hoisting mechanism synchronous centering to draw close to centre, according to underground
Suitable distance between the left hoisting mechanism of the size Control of tubing string and right hoisting mechanism load-bearing crawler belt 304, after adjustment, manually
Or machine power by first segment down-hole string be put into lower section clamping lifting device 3 left hoisting mechanism and right hoisting mechanism it
Between, two the second servo motors in left and right drive the driving wheel 305 of two sides to rotate synchronously respectively, and the load-bearing crawler belt 304 of two sides is to well
Lower tubular column is clamped and is lifted up until being promoted at workbench 13, drive-type hydraulic spanner is to two section down-hole string junctions
Box cupling carry out automatic dismantling, specified location is then lifted to by drawstring 8.In the process of ascension, when two section downhole tubulars
Under the box cupling of column junction reaches for the first time when contactless distance measuring sensor 4, contactless distance measuring sensor 4 is mutual under two
Mating reaction detects that down-hole string becomes large-sized and is judged as have string collar to pass through, this signal is passed to lower section at this time
301 controller of first servo motor, first servo motor 301 rotate backward allow lower section left hoisting mechanism and right hoisting mechanism
Box cupling is made a concession to two sides to pass through, when contactless distance measuring sensor 6 in box cupling arrival, in contactless distance measuring sensor 6 will
This signal pass to above and below two 301 controllers of first servo motor, the first servo motor 301 of lower section is prior to upper
The first servo motor 301 of side acts, so that the left hoisting mechanism and right hoisting mechanism of lower section clamp downhole tubular to intermediary movements
Column, the left hoisting mechanism and right hoisting mechanism of top are made a concession box cupling to two sides and are passed through, and so on up and down two clampings promoted and fill
It sets 3 pairs of down-hole strings and carries out simultaneously or replace holding action, realize down-hole string and continue to move upwards without interruption.When need
When carrying out lower section installation to down-hole string, by above process reverse operation, including by down-hole string link
The detection control sequence of box cupling correspondingly does phase revertive control, repeats no more.
Either being promoted or during decentralization, require to avoid occurring in non-positive situation down-hole string fall it is existing
The generation of elephant, thus on lower horizontal bracket 16 be provided with anti-falling mechanism 2, the course of work are as follows: promoted or under let off
Cheng Zhong, under contactless distance measuring sensor 4 and to assist contactless 17 mutual cooperation of distance measuring sensor effect that can judge same
The sequencing and time interval that box cupling passes through at one down-hole string link, accordingly to judge whether down-hole string falls
Situation drives left anchor ear 202 and right anchor ear 203 simultaneously and rapidly in when detecting when falling that Bidirectional power hydraulic cylinder 201 acts
Between movement hold down-hole string tightly to avoiding falling.
In addition, can also be carried out using two ways once to whether down-hole string the judgement fallen occurs:
(1) being arranged in pairs for being fixed for detecting down-hole string movement velocity and the direction of motion on support frame is non-
The prior arts means such as contact velocity sensor are detected；This signal Bidirectional power hydraulic cylinder 201 is sent to after allowing to control
Device processed, the movement of Bidirectional power hydraulic cylinder 201 drive left anchor ear 202 and right anchor ear 203 simultaneously and rapidly to hold underground tightly to intermediary movements
Tubing string is to avoid falling.
(2) two anti-fall sensing mechanisms, the anti-fall biography are symmetrically arranged on the support frame at left and right sides of down-hole string
Sense mechanism includes the sliding slot being arranged along down-hole string radial direction, roller supporting seat is slidably connected in sliding slot, in idler wheel
It is equipped with spring between support base bottom and sliding slot bottom, troughing roller is rotatably connected on roller supporting seat, in the work of spring
Troughing roller is pressed on down-hole string with lower, the movement velocity and the direction of motion of such down-hole string are transmitted to groove rolling
On wheel, down-hole string movement velocity and the direction of motion then can determine whether by the revolving speed and rotation direction of detection troughing roller,
To which this signal is sent to 201 controller of Bidirectional power hydraulic cylinder, the movement of Bidirectional power hydraulic cylinder 201 drives left anchor ear 202
Down-hole string simultaneously and rapidly is held tightly to avoid falling to intermediary movements with right anchor ear 203；This anti-fall sensing mechanism is encountering
It may be implemented to avoid automatically when well lower tubular column collar, carry out the biography of movement velocity and direction to down-hole string so as to whole process
It is dynamic.
(3) fixed pulley 11 at top can also be substituted for single direction ratchet formula pulley, just exposes well in down-hole string in this way
Mouth just binds drawstring 8 on down-hole string when entering the clamping lifting device 3 of lower section, or clip is arranged in 8 end of drawstring
Etc. connection types down-hole string is pre-fixed, in the process of ascension, drawstring 8 always pulls down-hole string,
Further play the role of dual fail-safe to down-hole string fall arrest under single direction ratchet formula pulley action.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
But these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (7)
1. a kind of coal bed gas, oil gas down-hole string lifting means, which is characterized in that including support frame, on support frame certainly
It is successively arranged horizontal bracket, middle horizontal bracket and lower horizontal bracket under above, is equipped on upper horizontal bracket for across pumping
The upper through-hole of beam hanger or oil pipe is fixed in upward through-hole on upper horizontal bracket and senses to the upper contactless ranging for penetrating setting
Device；It is equipped on middle horizontal bracket for the middle through-hole across sucker rod or oil pipe, fixes in oriented and lead on middle horizontal bracket
To penetrating contactless distance measuring sensor in setting in hole；It is equipped on lower horizontal bracket under sucker rod or oil pipe
Through-hole is fixed with into lower through-hole to penetrating contactless distance measuring sensor under setting on lower horizontal bracket；
It horizontally slips and is connected between upper horizontal bracket and middle horizontal bracket, between middle horizontal bracket and lower horizontal bracket
Lifting device is clamped, the clamping lifting device includes the horizontally slip left hoisting mechanism and right hoisting mechanism of movement, is mentioned on a left side
It rises mechanism and right hoisting mechanism bottom is equipped with the threaded hole being arranged in left-right direction, and left hoisting mechanism and right hoisting mechanism spiral shell
Pit screw thread is contrary, and the power lead screw across threaded hole, a left side on the power lead screw are rotatably connected on support frame
Right two-part hand of spiral on the contrary, be fixed with the first servo motor for driving power lead screw to rotate on support frame,
The rotation of power lead screw rotation drives left hoisting mechanism and right hoisting mechanism to intermediary movements for sucker rod or oil pipe
Clamping and promotion.
2. coal bed gas according to claim 1, oil gas down-hole string lifting means, which is characterized in that the left elevator
Structure includes support frame, is vertically equipped with driving wheel and inducer on the support frame, is connected with load-bearing around driving wheel and inducer and carries out
Band, it is side by side up and down on the right side of driving wheel and inducer to be equipped with multiple carrying rollers, multiple hold is located in load-bearing crawler belt rotation process
Load-bearing crawler belt state in a vertical shape at roller position；The load-bearing crawler belt is successively articulated and connected by multiple creeper treads, adjacent
It is hinged by articulated shaft between two creeper treads, the anti-skid chequer for increasing friction force is equipped on creeper tread, on the support frame
Equipped with the second servo motor for driving driving wheel to rotate.
3. coal bed gas according to claim 1 or 2, oil gas down-hole string lifting means, which is characterized in that in lower horizontal branch
Frame is equipped with anti-falling mechanism, and the anti-falling mechanism includes left anchor ear and right anchor ear, and the left anchor ear and right anchor ear symmetrically divide
Cloth is equipped with Bidirectional power hydraulic cylinder between left anchor ear and the correspondence both ends of right anchor ear at left and right sides of lower through-hole；
Be equipped on lower horizontal bracket to sucker rod or oil pipe to the contactless distance measuring sensor of the auxiliary for penetrating setting, under contactless survey
The signal of signal output end and Bidirectional power hydraulic cylinder controller away from sensor and the contactless distance measuring sensor of auxiliary inputs
End is connected.
4. coal bed gas according to claim 3, oil gas down-hole string lifting means, which is characterized in that on support frame top
Portion is equipped with workbench and for climbing the foot of ladder for arriving workbench, fence is equipped with around workbench, in workbench
Centre is equipped with the pipe perforation stretched out for sucker rod or oil pipe, is equipped on workbench corresponding with pipe perforation position
Drive-type hydraulic spanner, the through-hole drive-type hydraulic spanner is for disassembly to sucker rod or tubing coupling.
5. coal bed gas according to claim 3, oil gas down-hole string lifting means, which is characterized in that on workbench
Equipped with horizontal support arm, fixed pulley is equipped on horizontal support arm.
6. coal bed gas according to claim 3, oil gas down-hole string lifting means, which is characterized in that on support frame
Equipped with lifting arm and hoist engine, it has been equipped with drawstring on hoist engine, has played drawstring along lifting arm and is arranged through lifting arm end
Pulley blocks and dangle in lifting arm end.
7. coal bed gas according to claim 6, oil gas down-hole string lifting means, which is characterized in that the lifting arm is
Multistage telescopic arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910379303.1A CN110217733B (en) | 2019-05-08 | 2019-05-08 | Underground pipe column lifting equipment for coal bed gas and oil gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910379303.1A CN110217733B (en) | 2019-05-08 | 2019-05-08 | Underground pipe column lifting equipment for coal bed gas and oil gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110217733A true CN110217733A (en) | 2019-09-10 |
| CN110217733B CN110217733B (en) | 2020-06-16 |
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ID=67820869
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910379303.1A Expired - Fee Related CN110217733B (en) | 2019-05-08 | 2019-05-08 | Underground pipe column lifting equipment for coal bed gas and oil gas |
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| Country | Link |
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| CN (1) | CN110217733B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545366A (en) * | 2009-05-04 | 2009-09-30 | 长沙矿冶研究院 | Underwater mining method and device |
| CN101942976A (en) * | 2010-09-01 | 2011-01-12 | 中国石油天然气集团公司 | Drill rod joint positioning and controlling method of continuous cycle drilling system |
| WO2016038621A1 (en) * | 2014-09-12 | 2016-03-17 | Chawla Suresh | Traveling roads, conveyer belt roads and future railways improved |
| CN108896262A (en) * | 2018-06-26 | 2018-11-27 | 中国矿业大学 | A kind of deep shaft flexible cage guide vibration mechine |
| CN109696320A (en) * | 2019-02-28 | 2019-04-30 | 辽宁工程技术大学 | A kind of mining machinery cutting mechanism is comprehensive performance test bed |
-
2019
- 2019-05-08 CN CN201910379303.1A patent/CN110217733B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545366A (en) * | 2009-05-04 | 2009-09-30 | 长沙矿冶研究院 | Underwater mining method and device |
| CN101942976A (en) * | 2010-09-01 | 2011-01-12 | 中国石油天然气集团公司 | Drill rod joint positioning and controlling method of continuous cycle drilling system |
| WO2016038621A1 (en) * | 2014-09-12 | 2016-03-17 | Chawla Suresh | Traveling roads, conveyer belt roads and future railways improved |
| CN108896262A (en) * | 2018-06-26 | 2018-11-27 | 中国矿业大学 | A kind of deep shaft flexible cage guide vibration mechine |
| CN109696320A (en) * | 2019-02-28 | 2019-04-30 | 辽宁工程技术大学 | A kind of mining machinery cutting mechanism is comprehensive performance test bed |
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| Publication number | Publication date |
|---|---|
| CN110217733B (en) | 2020-06-16 |
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