CN109877182A - A kind of preparation method and applications of explosion overlength carbon dioxide fracturing pipe - Google Patents
A kind of preparation method and applications of explosion overlength carbon dioxide fracturing pipe Download PDFInfo
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- CN109877182A CN109877182A CN201910167436.2A CN201910167436A CN109877182A CN 109877182 A CN109877182 A CN 109877182A CN 201910167436 A CN201910167436 A CN 201910167436A CN 109877182 A CN109877182 A CN 109877182A
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- fracturing pipe
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Abstract
The present invention provides a kind of preparation method and applications of explosion overlength carbon dioxide fracturing pipe, Sectional Cast is become whole section of casting processing by the preparation method, steel alloy is heated into cooling repeatedly, increase the hardness of steel alloy, in secondary forging, fracturing pipe is quenched again, and it quenches 2 times, the hardness of fracturing pipe can be increased by quenching Step, so as to avoid fracturing pipe easily rupturable situation after repeated use, manufacturing step only has four steps, it is eased compared to existing whole section of casting technique step, and the production time of fracturing pipe can be reduced, reduce production cost, and pass through sorting, forging, a series of complete process such as detection and secondary forging, it can be improved finished product hardness and leakproofness, and fracturing pipe procedure of processing can be reduced, there is wide applicability for overlength carbon dioxide fracturing pipe processing method technical field.
Description
Technical field
The invention belongs to fracturing pipe processing technique field more particularly to a kind of overlength carbon dioxide fracturing pipe processing method skills
Art field.
Background technique
Application technology of the carbon dioxide blasting procedure in rock mining, scientific name are carbon dioxide liquid -- gas phase variable expansion broken rock
Technology, principle are that the carbon dioxide of liquid is filled into the fracturing pipe of special manufacture, are added by the activator in pipe to it
Heat makes the carbon dioxide instant vaporization of fracturing intraluminal fluid state generate high pressure gas energy, fracturing tube bottom end explosion plate is broken through, from cause
It splits tube bottom end and collapses sending high pressure gas, break up rock, re-replace activator and explosion plate after rupturing target and fill liquid two
Carbonoxide, it can be used repeatedly for fracturing pipe repeatedly, and the strength reduction after pipe shaft is repeatedly pressurized, there are need to scrap after security risk
Processing.The fracturing pipe of industrial application at present is different according to the where-used depth, mainly divides short tube and long tube two major classes, and material is to close
Jin Gang, the processing is simple for short tube manufacture, at low cost, but explosion power is small, long using limited, rock mineral industry high production cost
Pipe has explosion power strong, is suitble to the production of scale high-strength working, but fracturing pipe itself fabricates at high cost, existing cause
It splits pipe processing technique and is divided into Sectional Cast and two kinds of monoblock cast.
Scientific discovery based on the above background, in conjunction with the processing method of most fracturing pipes in the prior art, when in use
Have the following problems: existing fracturing pipe is in solid forging, because use, and solid forging technique is repeated in fracturing pipe needs
It is higher to lathe, cutter, fixture and requirement on machining accuracy, and not can guarantee fracturing pipe whole hard after processing for solid forging technique
Degree is enough strong, does not damage after repeated use to not can guarantee fracturing pipe, so that existing fracturing pipe hardness in solid forging
It is poor；And existing fracturing pipe, when carrying out Sectional Cast, since Sectional Cast processing technology is complex, and Sectional Cast needs
Fracturing pipe is welded, complex steps, and in actual use again, it is lower to deposit fracturing pipe bonding strength after processing
Situation, and not can avoid fracturing pipe and be broken in blasting process, so that existing fracturing composite pipe tightness is poor.
Then, in view of this, being studied improvement for existing structure and missing, a kind of explosion overlength dioxy is provided
Change the preparation method of carbon fracturing pipe, to achieve the purpose that with more more practical value.
Summary of the invention
Poor, complex steps, the poor problem of leakproofness, this Shen for the processing method fracturing pipe hardness of existing fracturing pipe
It please can be improved finished product hardness and close using a series of complete process such as sorting, forging, detection, secondary forging and surface processing
Feng Xing, and fracturing pipe procedure of processing can be reduced, have for overlength carbon dioxide fracturing pipe processing method technical field extensive
Practicability.
The present invention solves the technical solution that above-mentioned technical problem uses are as follows: a kind of explosion overlength carbon dioxide fracturing pipe
Preparation method, which is characterized in that specific method and step is as follows:
(1) sorting: the steel alloy for choosing inner alloy element 10%-25% is material.
(2) it forges: the charcoal furnace interior that the steel alloy chosen in step 1 is placed in 700 DEG C -1200 DEG C is heated,
The cold-water interior that the steel alloy heated is placed in 5 ° -10 ° again is cooling, repeats the above steps 2-3 times, the alloy that will be handled well
Steel is forged by casting machine, is then intercepted the steel alloy forged at 3.6m-4.5m length, and the alloy that will have been intercepted
Steel center drills, hole diameter 5cm-10cm, and the steel pipe that drilling is finished is placed spare.
(3) it detects: by press machine, the fracturing pipe handled well in every step 2 respectively dividing both ends and centre
Section detection, and ensure the hardness of fracturing pipe.
(4) secondary forging: by the fracturing pipe detected in step 3 be placed in again 700 DEG C -1200 DEG C of charcoal furnace interior into
Row heating, the cold-water interior that the fracturing pipe after heating is placed in 10 ° -20 ° is cooling, repeats the above steps 2-4 times, completes last
Quenching Step.
(5) surface processes: the fracturing pipe surface that step 4 quenching finishes being plated hard chrome respectively, plating hard chromium on surface is with a thickness of 10 μ
m-25μm。
Preferably, it is raw material that the present invention, which chooses the steel alloy that inner alloy element is 16%,.
Preferably, the present invention heats the charcoal furnace interior that the steel alloy chosen is placed in 750 DEG C, then will heat
Steel alloy be placed in 6 ° cold-water interior it is cooling, repeat the above steps 3 times, the steel alloy handled well passed through into casting machine progress
It forges, then the steel alloy forged is intercepted and is drilled at 4m length, and by the steel alloy center intercepted, hole diameter
For 7cm.
Preferably, the present invention heats the charcoal furnace interior that the middle fracturing pipe detected is placed in 700 DEG C again, will add
The cold-water interior that fracturing pipe after heat is placed in 10 ° is cooling, repeats the above steps 2 times and completes to forge.
Preferably, in the present invention in the procedure of processing of surface, fracturing pipe surface plates hard chrome with a thickness of 20 μm.
Further, the present invention provides the preparation method of the explosion overlength carbon dioxide fracturing pipe and its causes in carbon dioxide
Split the application of pipe processing technique field.
Compared with prior art, the invention has the following beneficial effects:
(1) present invention can increase steel alloy by the way that steel alloy is repeated quenching 3 times using the method for whole section of forging
Hardness, and in secondary forging, fracturing pipe is quenched, and quench 2 times again, fracturing pipe can be increased by quenching Step
Hardness, so as to avoid fracturing pipe easily rupturable situation after repeated use.
It (2), can by a series of complete process such as sorting, forging, detection, secondary forging and surface processing in the present invention
Finished product hardness and leakproofness are improved, and fracturing pipe procedure of processing can be reduced, and fracturing pipe surface and internal hard can be increased
Degree has overlength carbon dioxide fracturing pipe processing method technical field extensive real so that this kind of fracturing pipe is more durable
The property used.
(3) present invention manufacturing step only has four steps, eased compared to existing whole section of casting technique step, and can
The production time of fracturing pipe is reduced, production cost is reduced, and the hardness of this kind of fracturing pipe can be increased, so that this kind of fracturing pipe is more
Add durable.
(4) pass through compliance test result it is demonstrated experimentally that fracturing pipe of the invention wherein compare there are four embodiment, wherein embodiment
Four score value highests, and example IV scoring reaches 90 points, it can be seen that, example IV is optimal value, and can be applied to fracturing
The production and application of pipe, so as to actively be applied to enhancing fracturing pipe hardness and reduce the technical side of production fracturing pipe step
Method.
Specific embodiment
In the following, illustrating the present invention for embodiment, still, the present invention is not limited to following embodiments.
All raw and auxiliary materials, reagent and the instrument selected in the present invention, equipment are all well known in the art selection, but unlimited
Implementation of the invention is made, other some reagents well known in the art and equipment are applied both to the reality of following implementation of the present invention
It applies.
Embodiment one:
The preparation method of the explosion that the present invention uses overlength carbon dioxide fracturing pipe specific steps are as follows:
(1) sorting: the steel alloy for choosing inner alloy element 10%-25% is material；
(2) it forges: the charcoal furnace interior that the steel alloy chosen in step 1 is placed in 700 DEG C -1200 DEG C is heated,
The cold-water interior that the steel alloy heated is placed in 5 ° -10 ° again is cooling, repeats the above steps 2-3 times, the alloy that will be handled well
Steel is forged by casting machine, is then intercepted the steel alloy forged at 3.6m-4.5m length, and the alloy that will have been intercepted
Steel center drills, hole diameter 5cm-10cm, and the steel pipe that drilling is finished is placed spare；
(3) it detects: by press machine, the fracturing pipe handled well in every step 2 respectively dividing both ends and centre
Section detection, and ensure the hardness of fracturing pipe；
(4) secondary forging: by the fracturing pipe detected in step 3 be placed in again 700 DEG C -1200 DEG C of charcoal furnace interior into
Row heating, the cold-water interior that the fracturing pipe after heating is placed in 10 ° -20 ° is cooling, repeats the above steps 2-4 times, completes last
Quenching Step.
(5) surface processes: the fracturing pipe surface that step 4 quenching finishes being plated hard chrome respectively, plating hard chromium on surface is with a thickness of 10 μ
m-25μm。
Preferably, it is raw material that the present invention, which chooses the steel alloy that inner alloy element is 16%,.
Preferably, the present invention heats the charcoal furnace interior that the steel alloy chosen is placed in 750 DEG C, then will heat
Steel alloy be placed in 6 ° cold-water interior it is cooling, repeat the above steps 3 times, the steel alloy handled well passed through into casting machine progress
It forges, then the steel alloy forged is intercepted and is drilled at 4m length, and by the steel alloy center intercepted, hole diameter
For 7cm.
Preferably, the present invention heats the charcoal furnace interior that the middle fracturing pipe detected is placed in 700 DEG C again, will add
The cold-water interior that fracturing pipe after heat is placed in 10 ° is cooling, repeats the above steps 2 times and completes to forge.
Preferably, in the present invention in the procedure of processing of surface, fracturing pipe surface plates hard chrome with a thickness of 20 μm.
Embodiment two: choosing the steel alloy that inner alloy element is 10% is raw material, and the steel alloy chosen is placed
It is heated in 700 DEG C of charcoal furnace interiors, the cold-water interior that the steel alloy heated is then placed in 5 ° is cooling, and cooling finishes
Afterwards, it repeats the above steps again 1 time, the alloy that the steel alloy that quenching finishes is forged by casting machine, and will forged
Steel intercepts the length at 3.7m, then the steel alloy center intercepted drills, hole diameter 5cm finishes drilling
Fracturing pipe carry out spare, the both ends of fracturing pipe and centre then finished respectively to drilling by press machine are detected, and are examined
After survey, the charcoal furnace interior that the fracturing pipe that will test is placed in 800 DEG C again is heated, and the fracturing pipe after heating is put
It is cooling to be placed in 15 ° of cold-water interiors, is iteratively repeated above-mentioned steps 3 times, the fracturing pipe surface that quenching finishes uniformly then is plated into thickness
The hard chrome that degree is 10 μm, completes the procedure of processing of this kind of fracturing pipe.
Embodiment three: choosing the steel alloy that inner alloy element is 14% is raw material, and the steel alloy chosen is placed
It is heated in 730 ° of charcoal furnace interiors, the cold-water interior that the steel alloy heated is then placed in 7 ° is cooling, and cooling finishes
Afterwards, it repeats the above steps again 3 times, the alloy that the steel alloy that quenching finishes is forged by casting machine, and will forged
Steel intercepts the length at 3.8m, then the steel alloy center intercepted drills, hole diameter 6cm finishes drilling
Fracturing pipe carry out spare, the both ends of fracturing pipe and centre then finished respectively to drilling by press machine are detected, and are examined
After survey, the charcoal furnace interior that the fracturing pipe that will test is placed in 700 DEG C again is heated, and the fracturing pipe after heating is put
It is cooling to be placed in 13 ° of cold-water interiors, is iteratively repeated above-mentioned steps 2 times, the fracturing pipe surface that quenching finishes uniformly then is plated into thickness
The hard chrome that degree is 15 μm, completes the procedure of processing of this kind of fracturing pipe.
Example IV: choosing the steel alloy that inner alloy element is 16% is raw material, and the steel alloy chosen is placed
It is heated in 750 ° of charcoal furnace interiors, the cold-water interior that the steel alloy heated is then placed in 6 ° is cooling, and cooling finishes
Afterwards, it repeats the above steps again 3 times, the alloy that the steel alloy that quenching finishes is forged by casting machine, and will forged
Steel intercepts the length at 4m, and then the steel alloy center intercepted drills, hole diameter 7cm, and drilling is finished
Fracturing pipe carries out the both ends of spare, then to finish respectively to drilling by press machine fracturing pipe and centre is detected, and detects
After, the charcoal furnace interior that the fracturing pipe that will test is placed in 700 DEG C again is heated, and the fracturing pipe after heating is placed
It is cooling in 10 ° of cold-water interiors, it is iteratively repeated above-mentioned steps 2 times, the fracturing pipe surface that quenching finishes uniformly then is plated into thickness
For 20 μm of hard chrome, the procedure of processing of this kind of fracturing pipe is completed.
Embodiment five: choosing the steel alloy that inner alloy element is 20% is raw material, and the steel alloy chosen is placed
It is heated in 850 ° of charcoal furnace interiors, the cold-water interior that the steel alloy heated is then placed in 8 ° is cooling, and cooling finishes
Afterwards, it repeats the above steps again 2 times, the alloy that the steel alloy that quenching finishes is forged by casting machine, and will forged
Steel intercepts the length at 3.9m, then the steel alloy center intercepted drills, hole diameter 8cm finishes drilling
Fracturing pipe carry out spare, the both ends of fracturing pipe and centre then finished respectively to drilling by press machine are detected, and are examined
After survey, the charcoal furnace interior that the fracturing pipe that will test is placed in 900 DEG C again is heated, and the fracturing pipe after heating is put
It is cooling to be placed in 15 ° of cold-water interiors, is iteratively repeated above-mentioned steps 3 times, the fracturing pipe surface that quenching finishes uniformly then is plated into thickness
The hard chrome that degree is 25 μm, completes the procedure of processing of this kind of fracturing pipe.
Embodiment six: compliance test result test
50 fracturing pipes are randomly selected to detect hardness and access times as evaluation criterion, establish standards of grading table, referring to
Table 1, testing result table are shown in Table 2, carry out detection use to the fracturing pipe of various embodiments of the present invention production, results are averaged.
Table 1: fracturing pipe detects standards of grading table
| Surface hardness | Access times | Score value |
| 0-200HV | 1-5 times | 0-25 |
| 201-400HV | 1-5 times | 26-50 |
| 401-600HV | 1-5 times | 51-75 |
| 601-850HV | 1-5 times | 76-100 |
Table 2: fracturing pipe testing result table
| Surface hardness | Access times | Score value | |
| Embodiment two | 598HV | 2 times | 56 |
| Embodiment three | 655HV | 1 time | 78 |
| Example IV | 850HV | 5 times | 90 |
| Embodiment five | 698HV | 3 times | 81 |
Table 2 the result shows that, fracturing pipe provided by the invention is wherein compared there are four embodiment, and wherein example IV scores
It is worth highest, and example IV scoring reaches 90 points, it can be seen that, example IV is optimal value, and can be applied to the life of fracturing pipe
It produces and applies, so as to actively be applied to enhancing fracturing pipe hardness and reduce the technical method for producing fracturing pipe step.
In conclusion the present invention uses a series of complete process such as sorting, forging, detection, secondary forging and surface processing,
It can be improved finished product hardness and leakproofness, and fracturing pipe procedure of processing can be reduced, overlength carbon dioxide fracturing pipe is processed
Method and technology field has wide applicability.
Certain embodiment of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the present invention should be with appended claims.
Claims (6)
1. a kind of explosion preparation method of overlength carbon dioxide fracturing pipe, it is characterised in that:
(1) sorting: the steel alloy for choosing inner alloy element 10%-25% is material；
(2) it forges: the charcoal furnace interior that the steel alloy chosen in step 1 is placed in 700 DEG C -1200 DEG C is heated, then will
The cold-water interior that the steel alloy heated is placed in 5 ° -10 ° is cooling, repeats the above steps 2-3 times, the steel alloy handled well is led to
It crosses casting machine to be forged, then intercept the steel alloy forged at 3.6m-4.5m length, and will be in the steel alloy that intercepted
The heart drills, hole diameter 5cm-10cm, and the steel pipe that drilling is finished is placed spare；
(3) it detects: by press machine, segmentation inspection being carried out to both ends and centre respectively to the fracturing pipe handled well in every step 2
It surveys, and ensures the hardness of fracturing pipe；
(4) secondary forging: the charcoal furnace interior that the fracturing pipe detected in step 3 is placed in 700 DEG C -1200 DEG C again is added
Heat, the cold-water interior that the fracturing pipe after heating is placed in 10 ° -20 ° is cooling, repeats the above steps 2-4 times, completes last quenching
Step；
(5) surface processes: the fracturing pipe surface that step 4 quenching finishes being plated hard chrome respectively, plating hard chromium on surface is with a thickness of 10 μm -25
μm。
2. a kind of preparation method of explosion overlength carbon dioxide fracturing pipe as described in claim 1, it is characterised in that: it is described
In sorting step, choosing the steel alloy that inner alloy element is 16% is raw material.
3. a kind of preparation method of explosion overlength carbon dioxide fracturing pipe as described in claim 1, it is characterised in that: it is described
It forges in step, the charcoal furnace interior that the steel alloy chosen is placed in 750 DEG C is heated, then the steel alloy heated is put
It is cooling to be placed in 6 ° of cold-water interior, repeats the above steps 3 times, the steel alloy handled well is forged by casting machine, then
The steel alloy forged is intercepted and is drilled at 4m length, and by the steel alloy center intercepted, hole diameter 7cm.
4. a kind of preparation method of explosion overlength carbon dioxide fracturing pipe as described in claim 1, it is characterised in that: it is described
In secondary forging step, the charcoal furnace interior that the fracturing pipe detected in step 3 is placed in 700 DEG C again is heated, will be added
The cold-water interior that fracturing pipe after heat is placed in 10 ° is cooling, repeats the above steps 2 times and completes to forge.
5. a kind of preparation method of explosion overlength carbon dioxide fracturing pipe as described in claim 1, it is characterised in that: it is described
In the procedure of processing of surface, fracturing pipe surface plates hard chrome with a thickness of 20 μm.
6. the preparation method of a kind of explosion overlength carbon dioxide fracturing pipe and its in carbon dioxide fracturing pipe processing technique field
Application.
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