CN105952407A - Drilling tool stuck releasing method and stuck releasing device - Google Patents
Drilling tool stuck releasing method and stuck releasing device Download PDFInfo
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- CN105952407A CN105952407A CN201610390120.6A CN201610390120A CN105952407A CN 105952407 A CN105952407 A CN 105952407A CN 201610390120 A CN201610390120 A CN 201610390120A CN 105952407 A CN105952407 A CN 105952407A
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- thermal source
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- injection
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- 238000005553 drilling Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000002347 injection Methods 0.000 claims abstract description 118
- 239000007924 injection Substances 0.000 claims abstract description 118
- 239000012530 fluid Substances 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 241001074085 Scophthalmus aquosus Species 0.000 claims 2
- 239000011435 rock Substances 0.000 abstract description 9
- 238000003672 processing method Methods 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 8
- 238000007710 freezing Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 206010060904 Freezing phenomenon Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000243 solution Substances 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a drilling tool jam release method and a jam release device. The drilling tool comprises a drill string, and the method for releasing the drilling tool comprises the following steps: acquiring a stuck point position of a drilling tool; lowering the injection device into the drilling tool according to the acquired stuck point position; injecting a heat source into the drilling tool through the injection device; after the injection of the heat source is stopped, injecting a cold source into the drilling tool through the injection device; and judging whether the drilling tool is stuck or not, and if the drilling tool is not stuck, repeating the steps of injecting the heat source and the cold source until the drilling tool is stuck. The stuck releasing method changes a single processing method which only depends on a movable drilling tool during stuck drilling, and changes the temperature difference of rock debris or fallen blocks at the stuck point by using high temperature or low temperature, so that the rock debris or the fallen blocks are deformed due to the temperature difference, the stable stacking structure of the rock debris or the fallen blocks is further changed, the deformation and the damage of the rock debris or the fallen blocks stacked at the stuck point are accelerated, and the drilling stuck releasing operation is realized.
Description
Technical field
The present invention relates to DP technology, particularly relate to a kind of drill pipe release method and release device.
Background technology
Bit freezing phenomenon is there will be during oil/gas drilling.Such as: hole collapse causes drilling tool to be got off by collapsing
Rock block and cannot on carry or transfer；The most such as: drilling process cannot carry to ground in time because of landwaste
And gather in certain, down-hole and drilling tool is blocked.
In prior art, if running into bit freezing phenomenon, operator typically can the most movable drilling tool, as upwards
Drawing drilling tool, it is rotated down drilling tool, hammer tool, back reaming；Increase discharge capacity to rinse energetically simultaneously, will card
Rock at Dian is progressively carried outside thus unfreezing.Time required for drill pipe release is longer, the efficiency of drill pipe release
Low.
Finally, on the premise of above-mentioned measure is unsuccessful, use breakouting pack of dynamite, set milling, the mode solution of backfill sidetracking
Except lock of tool drilling.If using breakouting pack of dynamite, set milling, the mode of backfill sidetracking to release lock of tool drilling, also can
Cause the damage of drilling tool.
Summary of the invention
For the problems referred to above, it is an object of the invention to provide a kind of drill pipe release method and release device to solve
At least one in problem mentioned above.
To achieve these goals, a kind of drill pipe release method that the present invention provides, described drilling tool includes drill string,
This drill pipe release method includes:
Obtain the stuck point position of drilling tool；
Injection apparatus is lowered in drilling tool by the stuck point position according to getting；
In drilling tool, thermal source is injected by injection apparatus；
After stopping injecting thermal source, in drilling tool, inject low-temperature receiver by injection apparatus；
Judge drilling tool whether unfreezing, if drilling tool does not has unfreezing, repeat above-mentioned injection thermal source and inject low-temperature receiver
Step until drill pipe release.
Further, the stuck point position step obtaining drilling tool includes:
Described drill string is applied pulling force F, the elongation Δ L of acquisition drill string under this pulling force F；
The elastic modulus E of elongation Δ L based on described drill string and described drill string obtains drill string by card
Overall length L0。
Further, the elastic modulus E of elongation Δ L based on drill string and drill string obtains pipe becoming stuck
Overall length L0Step includes:
Based onObtain L0。
Further, in injection apparatus being lowered into drilling tool according to the stuck point position got, step includes:
Injection apparatus is disposed close in the drilling tool of stuck point position.
Further, in injection apparatus being disposed close to the drilling tool of stuck point position, step includes: injection filled
Placement location is being located between described stuck point position 0～2m.
Further, in drilling tool, inject thermal source step by injection apparatus to include: the injection rate of thermal source be 1～
5m3Between, injecting in heat-source process, repeatedly on carry or transfer described injection apparatus.
Further, in drilling tool, inject thermal source step and after stopping injecting thermal source by injection apparatus, logical
Overspray device injects in drilling tool between low-temperature receiver step and also includes: stand 0.5～2 hour and repeatedly on carry or
Transfer described drill string.
Further, the injection rate of low-temperature receiver is 1～5m3Between, injecting during low-temperature receiver, repeatedly on carry or
Transfer described injection apparatus.
Further, after stopping injecting thermal source, in drilling tool, inject low-temperature receiver step by injection apparatus, with
Judge also to include between drilling tool whether unfreezing step: stand 0.5～1 hour and on carry or transfer described drill string.
Further, the temperature of described thermal source is between 150 DEG C～400 DEG C, described thermal source include drilling fluid and
At least one in high temperature liquid water.
Further, the temperature of described low-temperature receiver is less than 0 DEG C, and described low-temperature receiver includes in drilling fluid and liquid nitrogen
At least one.
Further, it is judged that drilling tool whether unfreezing, if drilling tool does not has unfreezing, repeat above-mentioned injection thermal source with
And inject the step of low-temperature receiver until drill pipe release step includes: if drill pipe release, release device is proposed.
Further, it is judged that drilling tool whether unfreezing, if drilling tool does not has unfreezing, repeat above-mentioned injection thermal source with
And inject the step of low-temperature receiver until the step of drill pipe release includes: when drilling tool can move up and down and rotary moveable,
It is judged as drill pipe release.
Further, this release device includes:
Tubing string, has relative top and bottom, and the lower end of described tubing string can be stretched in the cavity of drilling tool；
Thermal source injection device, it can connect with the upper end of described tubing string；
Low-temperature receiver injection device, it can connect with the upper end of described tubing string；
Injection apparatus, it is arranged on the lower end of described tubing string.
Above-mentioned drill pipe release method and release device, it has the beneficial effects that: this releasing method changes bit freezing
The single treatment method of Shi Danchun dependence activity drilling tool, utilizes high temperature and low temperature increase the landwaste at stuck point or fall
The temperature difference of block so that landwaste or fall block and produce deformation because of the reason of temperature difference, and then it is stable to change it
Packed structures, accelerates the landwaste piled up at stuck point or the deformation and failure falling block, thus realizes drilling well unfreezing and make
Industry.Time required for greatly reducing unfreezing and improve the efficiency of unfreezing.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of drill pipe release method in embodiments of the invention；
Fig. 2 is the structural representation of a kind of drill pipe release method device in embodiments of the invention；
Fig. 3 is the structural representation of the injection apparatus in embodiments of the invention；
Fig. 4 is drilling tool card diamond landwaste or the schematic diagram falling block；
Fig. 5 is the elongation schematic diagram of drill string in embodiments of the invention.
The figures above illustrates: 1, tubing string；11, the first arrival end；12, the second arrival end；2, thermal source injects
Device；3, low-temperature receiver injection device；4, injection apparatus；41, spraying canister；411, through hole；42, plug；
5, check valve；6, drill string；7, landwaste or fall block；8, the borehole wall.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, below in conjunction with this Shen
Please accompanying drawing in embodiment, the technical scheme in the embodiment of the present application is clearly and completely described, aobvious
So, described embodiment is only some embodiments of the present application rather than whole embodiments.Based on this
Embodiment in application, those of ordinary skill in the art are obtained on the premise of not making creative work
Every other embodiment, all should belong to the scope of protection of the invention.
Shown in reference Fig. 1, the releasing method of a kind of drilling tool, this drill pipe release method comprises the following steps:
S101: obtain the stuck point position of drilling tool；
In this step, as it is shown in figure 5, the position obtaining stuck point also includes: described drill string 6 is applied
Pulling force F, the elongation Δ L of acquisition drill string 6 under this pulling force F；Elongation based on described drill string 6
The elastic modulus E of amount Δ L and described drill string 6 obtains drill string 6 by overall length L of card0。
More specifically, the elastic modulus E of elongation Δ L based on drill string 6 and drill string 6 obtains drill string
6 by overall length L of card0Step includes:
Based onObtain L0, wherein, E is elastic modelling quantity.
Above-mentioned formula is the actual application of Hooke's law, by getting elongation Δ L and the pulling force of drill string 6
F, obtains drill string 6 by overall length L of card0, and then determine the position of stuck point, it is to avoid use other complicated
Method or the measurement to stuck point position is set, greatly reduce cost and the time of drill pipe release, simultaneously
Also improve the efficiency of drill pipe release.But also it is not precluded within the operation of reality, adopts because of the restriction of condition
By other measuring method, such as, acoustic measurement etc..
S102: injection apparatus 4 is lowered in drilling tool by the stuck point position according to getting；
In this step, in actual unfreezing operation, because the position of stuck point is different, thus the position of tubing string 1
Put needs to be adjusted according to the position of stuck point, and then make when injection apparatus 4 is lowered in drilling tool, spray
The jet point of injection device 4 near the stuck point position of drilling tool, and then can ensure that injection apparatus 4 is injected in drilling tool
Thermal source or low-temperature receiver can enter with the drill string 6 of stuck point position and the rock that is stuck in outside drill string 6 rapidly
Row heat exchange, thus improve heat utilization efficiency.Concrete, release device includes tubing string 1 and injection apparatus 4,
Injection apparatus 4 is arranged on the lower end of tubing string 1.Injection apparatus 4 can higher or lower than stuck point position 0～
2m。
In this step, the tubing string 1 of release device and the outside dimension of injection apparatus 4 are less than drill string 6
Internal diameter 2/3, such as, use 127mm drill string 6 time, the external diameter of described tubing string 1 be less than 85mm,
Injection apparatus 4 and tubing string 1 can be lowered in drilling tool smoothly, and in drilling tool, inject low-temperature receiver or heat
During the fluid of source, fluid is not flowed in release device by the obstruction of release device.
S103: inject thermal source in drilling tool by injection apparatus 4；
In this step, the temperature of thermal source can be that between 150 DEG C～400 DEG C, described thermal source includes drilling fluid
With at least one in high temperature liquid water.The application is not limited to this embodiment to the temperature of thermal source and raw material
Limit, as long as the demand of reality can be met, all meet the requirement of the present invention.
It can be 1～5m that release device injects the injection rate of thermal source3Between.Concrete, the injection rate of thermal source can
With relevant with the size of drill string 6, when the size of drill string 6 is bigger, in order to increase the heating surface of thermal source,
The injection rate of thermal source can improve.After the thermal source injection rate of unit interval improves, because the cross section of drill string 6
Amass constant, and then the heating surface of thermal source can be improved, and then improve the heat exchange efficiency of thermal source and drill string 6.
It addition, the injection rate of thermal source is also relevant with the aperture of the injection apparatus 4 being arranged on injection device, aperture is more
Greatly, injection rate is the biggest.
The time that thermal source injects can determine according to the injection rate of thermal source, when injecting complete by thermal source, from opening
Begin be injected into injection the complete time be injection length.
The injection of thermal source can realize by being arranged on ground thermal source pumping installations, thermal source pumping installations bag
Offer thermal source is provided and thermal source is injected into release device.
In the present embodiment, after stopping injecting thermal source in drilling tool by injection apparatus 4, further comprise the steps of:
Stand 0.5～2 hour, stand during on carry or transfer described drill string 6.Stand 0.5～2 hour
It is to be able to allow heat source fluid complete and drill string 6 and be centered around the rock outside drill string 6 and preferably carry out
Heat exchange.In order to make the upper and lower uniformity of temperature profile of the thermal source being injected in drilling tool, can after injecting thermal source
More than carry or transfer injection apparatus 4, and then make thermal source produce upper and lower convection current and the temperature of thermal source is divided
Cloth is uniform.
Concrete, after starting to inject thermal source in drilling tool so that drill string 6 expanded by heating, drill string 6
External diameter be heated expansion.As shown in Figure 4, landwaste at drilling tool stuck point or fall block also can adding at high temperature heat source
The lower expanded by heating of heat so that the borehole size on stratum reduces；But because of down-hole limited space, inevitable at landwaste or
Fall and between block, produce bigger internal stress, landwaste can be destroyed when bit freezing starts when internal stress is bigger or to fall block relative
Stable packed structures, causes the landwaste at stuck point or falls block rearrangement, the landwaste of stuck point upper and lower end face or
Fall block to necessarily lead to loosen, landwaste in the middle part of stuck point or fall block due to after being heated owing to transporting up or down
Dynamic, to the borehole wall 8 extruding and relatively stably can only be embedded on the borehole wall 8, landwaste or fall block and then again arrange
Cloth；The purpose standing 0.5～2 hour is also for landwaste or falls the structure of block and carries out rearrangement.
S104: after stopping injecting thermal source, inject low-temperature receiver in drilling tool by injection apparatus 4；
In this step, the temperature of low-temperature receiver can be less than 0 DEG C, and described thermal source includes in drilling fluid and liquid nitrogen
At least one.The application is not limited to this embodiment temperature to low-temperature receiver and the restriction of raw material, as long as can meet
Actual demand, all meets the requirement of the present invention.
It can be 1～5m that release device injects the injection rate of low-temperature receiver3Between.Concrete, the injection rate of low-temperature receiver can
With relevant with the size of drill string 6, when the size of drill string 6 is bigger, in order to increase the heat-exchange surface of low-temperature receiver,
The injection rate of low-temperature receiver can improve.After the low-temperature receiver injection rate of unit interval improves, because the cross section of drill string 6
Amass constant, and then the heat-exchange surface of low-temperature receiver can be improved, and then improve the heat exchange effect of low-temperature receiver and drill string 6
Rate.It addition, the injection rate of low-temperature receiver is also relevant with the aperture of the injection apparatus 4 being arranged on injection device, hole
Footpath is the biggest, and injection rate is the biggest.
The injection length of low-temperature receiver injects complete calculating with low-temperature receiver, and when low-temperature receiver injects complete, low-temperature receiver starts to inject
It is injection length to injecting the complete time.
Low-temperature receiver can realize by being arranged on the low-temperature receiver injection device 3 on ground, and low-temperature receiver injection device 3 can wrap
Offer low-temperature receiver is provided and low-temperature receiver is injected into release device.
In the present embodiment, in drilling tool, inject low-temperature receiver step by injection apparatus 4 and stopping injection low-temperature receiver
After, further comprise the steps of: after standing 0.5～2 hour, above carry or transfer described drill string 6.Stand 0.5～2
Hour it is to be able to allow low-temperature receiver fluid and drill string 6 and be centered around the rock outside drill string 6 and preferably carry out
Heat exchange.In order to make the upper and lower uniformity of temperature profile of the low-temperature receiver that is injected in drilling tool, permissible after injecting low-temperature receiver
On carry or transfer injection apparatus 4, and then make low-temperature receiver produce convection current and make the uniformity of temperature profile of low-temperature receiver.
When injecting after low-temperature receiver in by the drilling tool of card so that drill string 6, stratum, landwaste at stuck point or fall block
Moment shrinkage, volume-diminished by the effect of heat transfer of low-temperature receiver, on the one hand increase drill string 6 and landwaste
Or fall the gap between block, and on the other hand, landwaste or fall block shrinkage or volume-diminished can make its internal stability
Packed structures destroyed, part landwaste or fall block and can produce loosening, then coordinate spudding up and down, can
Realize destroying at bit freezing stable landwaste or fall block, thus realizing drill pipe release.
In the present embodiment, before injecting low-temperature receiver, thermal source also it is filled with.Stratum, landwaste or fall block and be heated to relatively
Acting on by the relatively low fluid of temperature again after high temperature so that stratum, landwaste or the temperature before and after falling block
Difference becomes big, and then makes stratum, landwaste or to fall the amount of contraction of block bigger, it is easier to realize the unfreezing of drilling tool.
S105: judge drilling tool whether unfreezing, if drilling tool does not has unfreezing, repeat above-mentioned injection thermal source and injection
The step of low-temperature receiver is until drill pipe release.Concrete, when drilling tool energy is upper and lower and rotary motion, then mean to bore
Tool unfreezing, otherwise, the non-unfreezing of drilling tool.
In the present embodiment, if drill string 6 can not on carry or transfer, then mean drill string 6 also in
The state of bit freezing, mainly repeats the step of S103 and S104.
It addition, judge drilling tool whether unfreezing, if drilling tool does not has unfreezing, repeat above-mentioned injection thermal source and injection
The step of low-temperature receiver is until drill pipe release step includes: if drill pipe release, propose release device.
Above-mentioned drill pipe release method, the single place of dependence activity drilling tool merely when this releasing method changes bit freezing
Reason method, utilizes high temperature and low temperature increase the landwaste at stuck point or fall the temperature difference of block so that landwaste or fall block
Produce deformation because of the reason of temperature difference, and then change its stable accumulation structure, accelerate accumulation at stuck point
Landwaste or fall the deformation and failure of block, thus realize drilling well unfreezing operation.Greatly reduce required for unfreezing
Time and improve the efficiency of unfreezing.
Breakouting pack of dynamite, set milling, the mode of backfill sidetracking is used to release bit freezing it addition, this releasing method avoids
Accident, and then damage to drilling tool when avoiding unfreezing.
Present invention also provides a kind of drill pipe release method device, with reference to shown in Fig. 2, this release device includes:
Tubing string 1, has relative top and bottom, and the lower end of described tubing string 1 can be stretched in the cavity of drilling tool；
Thermal source injection device 2, it can connect with the upper end of described tubing string 1；Low-temperature receiver injection device 3, it can be with described
The upper end connection of tubing string 1；Injection apparatus 4, it is arranged on the lower end of described tubing string 1.
This release device be above-mentioned drill pipe release method with the use of device, by thermal source injection device 2 and
Low-temperature receiver injection device 3 injects high temperature or cryogen in by the drilling tool of card, and then changes the landwaste at stuck point
Or fall stable accumulation structure and the temperature difference of block, accelerate the landwaste piled up at stuck point or the deformation falling block and broken
Bad, thus realize drilling well unfreezing operation.Time required for greatly reducing unfreezing and improve unfreezing
Efficiency.Meanwhile, this apparatus structure is simple so that work flow is more convenient, it is easy to on-the-spot operation.
In the present embodiment, with reference to shown in Fig. 2 and Fig. 3, tubing string 1 can be chosen as a root length degree more than or
Person is shorter than the seriality tubing of drilling well stuck point position.Can be 0～2m more than the length being less than, the application be not
This is restricted.Seriality tubing can be the coiled tubing with certain range of flexion, it is also possible to by waiting external diameter
Tubing string 1 be threaded connection mode and connect and form a root length degree more than the tubing of stuck point well depth.Excellent at one
In the embodiment of choosing, in order to set up the circulation canal of Cooling and Heat Source medium during operation in drill string 6, and then
Make to be injected into thermal source and low-temperature receiver can flow in drill string 6, it is achieved thermal source or low-temperature receiver and drill string 6 and
The heat transfer on stratum.The outside dimension of described tubing string 1 less than drillng operation time drill string 6 internal diameter 2/3,
During as used the drill string 6 of 127mm, the external diameter of described tubing string 1 is less than 85mm.
In the present embodiment, with reference to shown in Fig. 2, the first arrival end 11 and the second arrival end 12 can the most also
Being arranged on tubing string 1 of row, tubing string 1 is connected with tubing string 1 again, and then makes the first arrival end 11 and the
Two arrival ends 12 can connect with tubing string 1.
First arrival end 11 can be connected with thermal source injection device 2, and thermal source injection device 2 can include heat
Source feedway and thermal source is injected into the injection pump in tubing string 1.Can be provided with in thermal source feedway
Heater, can heat workover fluid or water then.In other embodiments, thermal source supply
Heater can be not provided with on device and be provided with the holding vessel that can be stored in the thermal source after external heat.
Thermal source feedway is not made concrete restriction by the application.
In one preferred embodiment, in order to when preventing from injecting thermal source in tubing string 1 or when injecting complete
The backflow of thermal source, is provided with check valve 5 between the first arrival end 11 and thermal source injection device 2.
Second arrival end 12 can be connected with low-temperature receiver injection device 3, and low-temperature receiver injection device 3 can include cold
Source feedway and low-temperature receiver is injected into the injection pump in tubing string 1.Can be provided with in low-temperature receiver feedway
Refrigerating plant, can freeze water then.In other embodiments, permissible on low-temperature receiver feedway
It is not provided with refrigeration and is provided with the holding vessel that can be stored in outside liquid nitrogen.Low-temperature receiver feedway is not made by the application
Concrete restriction.In one preferred embodiment, in order to prevent in tubing string 1 inject low-temperature receiver time or
The backflow of low-temperature receiver when injecting complete, is provided with check valve 5 between the second arrival end 12 and low-temperature receiver injection device 3,
Prevent the backflow of low-temperature receiver.
In the present embodiment, the lower end of tubing string 1 is provided with injection apparatus 4.Concrete, injection apparatus 4 can
To include a spraying canister 41.Spraying canister 41 can be a metallic cylinder, and spraying canister 41 work is not had by the application
The restriction of body.The upper end of spraying canister 41 is connected with the lower end of tubing string 1, and connected mode can be threaded.
The lower end of spraying canister 41 can be blocked by plug 42.In an other embodiment, if spray
The lower end of shooting cylinder 41 is to close, it may not be necessary to plug 42 blocks.The lower ending opening of spraying canister 41
It is advantageous in that: if there is blocking in tubing string 1 or injection apparatus 4, can be by injection apparatus
4 remove and are directly removed by plug 42 and clear up the tamper in tubing string 1 or injection apparatus 4.
In one preferred embodiment, the external diameter of injection apparatus 4 is identical with the external diameter of tubing string 1, i.e. sprays
The outside dimension of device 4 is less than during drillng operation the 2/3 of drill string 6 internal diameter.The annular of injection apparatus 4
Wall is distributed a certain amount of through hole 411 in radial directions.Thermal source or low-temperature receiver in order to make injection can be concentrated
The position with stuck point carry out heat exchange, the distribution length of through hole 411 longitudinal direction can be between 1m～2m.Logical
The diameter dimension in hole 411 can be between 2～8mm.The application not diameter to through hole 411 makees concrete limit
Making, it can be adjusted accordingly according to the size of the external diameter of injection apparatus 4, and external diameter is the biggest, described through hole
The external diameter of 411 can suitably increase.
It is furthermore preferred that described through hole 411 be distributed on injection apparatus 4 can be in certain regularity, such as footpath
Distribution symmetrical to direction, axially symmetric, spiral type distribution etc., it is also possible to random without evident regularity
Distribution.It is uniform for guaranteeing the heat transfer in low-temperature receiver fluid or the heat source fluid cavity in drill string 6 ring,
Described through hole 411 is all had to be distributed in the orientation that the circumferencial direction of injection apparatus 4 is different.Optionally, same
Opening 2 holes in one sagittal plane, the centrage in hole is on the same line；In same sagittal plane 2
Centerline hole is orthogonal with 2 centerline holes in another sagittal plane adjacent.Described through hole 411
The longitudinal length of distribution typically can be in the range of 1m～2m.
In one preferred embodiment, can be provided with between lower end and the injection apparatus 4 of tubing string 1 unidirectional
Valve 5, check valve 5 can meet Cooling and Heat Source fluid and pass downwardly through, but be unsatisfactory for fluid upwardly through, and then
Prevent the fluid in drilling tool from reversely spraying from described tubing string 1, it is ensured that Cooling and Heat Source fluid is in drill string 6
Circulation.
It should be understood that above description is to illustrate rather than to limit.On reading
Stating description, those skilled in the art are come by the many embodiments outside the example provided and many application
Say and all will be apparent from.Therefore, the scope of this teaching should not determine with reference to foregoing description, but
Should determine with reference to the four corner of the equivalent that claims and these claim are had.
Include that the disclosure of patent application and bulletin is all passed through with reference to combining for comprehensive purpose, all articles and reference
In this article.Any aspect omitting theme disclosed herein in aforementioned claim is not intended to abandon
This body matter, also should not be considered as inventor and this theme is not thought of as the one of disclosed invention theme
Part.
Claims (14)
1. a drill pipe release method, described drilling tool includes drill string, it is characterised in that this drill pipe release side
Method includes:
Obtain the stuck point position of drilling tool；
Injection apparatus is lowered in drilling tool by the stuck point position according to getting；
In drilling tool, thermal source is injected by injection apparatus；
After stopping injecting thermal source, in drilling tool, inject low-temperature receiver by injection apparatus；
Judge drilling tool whether unfreezing, if drilling tool does not has unfreezing, repeat above-mentioned injection thermal source and inject low-temperature receiver
Step until drill pipe release.
Drill pipe release method the most according to claim 1, it is characterised in that obtain the stuck point position of drilling tool
Put step to include:
Described drill string is applied pulling force F, the elongation Δ L of acquisition drill string under this pulling force F；
The elastic modulus E of elongation Δ L based on described drill string and described drill string obtains drill string by card
Overall length L0。
Drill pipe release method the most according to claim 2, it is characterised in that elongation based on drill string
The elastic modulus E of amount Δ L and drill string obtains overall length L of pipe becoming stuck0Step includes:
Based onObtain L0。
Drill pipe release method the most according to claim 1, it is characterised in that according to the stuck point got
In injection apparatus is lowered into drilling tool by position, step includes:
Injection apparatus is disposed close in the drilling tool of stuck point position.
Drill pipe release method the most according to claim 4, it is characterised in that injection apparatus is placed on
In the drilling tool of stuck point position, step includes:
Injection apparatus is placed between described stuck point position 0～2m place.
Drill pipe release method the most according to claim 1, it is characterised in that by injection apparatus to brill
Inject thermal source step in tool to include:
The injection rate of thermal source is 1～5m3Between, injecting in heat-source process, repeatedly on propose or transfer described spray
Injection device.
Drill pipe release method the most according to claim 1, it is characterised in that by injection apparatus to brill
Inject thermal source step in tool and after stopping injecting thermal source, in drilling tool, inject low-temperature receiver step by injection apparatus
Between also include:
Stand 0.5～2 hour and repeatedly on carry or transfer described drill string.
Drill pipe release method the most according to claim 1, it is characterised in that after stopping injecting thermal source,
In drilling tool, inject low-temperature receiver by injection apparatus to include:
The injection rate of low-temperature receiver is 1～5m3Between, injecting during low-temperature receiver, repeatedly on propose or transfer described spray
Injection device.
Drill pipe release method the most according to claim 1, it is characterised in that after stopping injecting thermal source,
In drilling tool, inject low-temperature receiver step by injection apparatus, and judge also to include between drilling tool whether unfreezing step:
Stand 0.5～1 hour and on carry or transfer described drill string.
Drill pipe release method the most according to claim 1, it is characterised in that the temperature of described thermal source
It is that between 150 DEG C～400 DEG C, described thermal source includes at least one in drilling fluid and high temperature liquid water.
11. drill pipe release methods according to claim 1, it is characterised in that the temperature of described low-temperature receiver
Being less than 0 DEG C, described low-temperature receiver includes at least one in drilling fluid and liquid nitrogen.
12. drill pipe release methods according to claim 1, it is characterised in that judge whether drilling tool solves
Card, if drilling tool does not has unfreezing, repeats above-mentioned injection thermal source and injects the step of low-temperature receiver until drill pipe release
Step includes:
If drill pipe release, release device is proposed.
13. drill pipe release methods according to claim 1, it is characterised in that judge whether drilling tool solves
Card, if drilling tool does not has unfreezing, repeats above-mentioned injection thermal source and injects the step of low-temperature receiver until drill pipe release
Step include:
When drilling tool can move up and down and rotary moveable, it is judged that for drill pipe release.
14. 1 kinds of release devices, it is characterised in that this release device includes:
Tubing string, has relative top and bottom, and the lower end of described tubing string can be stretched in the cavity of drilling tool；
Thermal source injection device, it can connect with the upper end of described tubing string；
Low-temperature receiver injection device, it can connect with the upper end of described tubing string；
Injection apparatus, it is arranged on the lower end of described tubing string.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610390120.6A CN105952407B (en) | 2016-06-03 | 2016-06-03 | Drilling tool stuck releasing method and stuck releasing device |
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| CN201610390120.6A CN105952407B (en) | 2016-06-03 | 2016-06-03 | Drilling tool stuck releasing method and stuck releasing device |
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| CN105952407B CN105952407B (en) | 2018-05-04 |
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| CN105952407B (en) | 2018-05-04 |
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