CN107313735A - A kind of bumper jar for continuous pipe unfreezing - Google Patents
A kind of bumper jar for continuous pipe unfreezing Download PDFInfo
- Publication number
- CN107313735A CN107313735A CN201710754174.0A CN201710754174A CN107313735A CN 107313735 A CN107313735 A CN 107313735A CN 201710754174 A CN201710754174 A CN 201710754174A CN 107313735 A CN107313735 A CN 107313735A
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- Prior art keywords
- bumper jar
- chamber
- bumper
- continuous pipe
- unfreezing
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- 239000000945 filler Substances 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 5
- 238000005553 drilling Methods 0.000 abstract description 12
- 238000005381 potential energy Methods 0.000 abstract description 11
- 230000035939 shock Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
- E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
-
- 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
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Actuator (AREA)
Abstract
The invention discloses a kind of bumper jar for continuous pipe unfreezing, belong to continuous pipe drilling technology field, including bumper jar housing, the bumper jar mandrel installed in bumper jar enclosure interior, the brute spring installed in bumper jar enclosure interior, the moveable piston bar installed in bumper jar enclosure interior；Continuous pipe realizes constantly impact upwards under the cooperation of bumper jar mandrel and brute spring, i.e. continuous pipe can be produced in the presence of the elastic potential energy of brute spring than larger shock loading, so as to producing jarring action at the stuck point of continuous pipe, the elastic potential energy produced by using continuous pipe is realized constantly comes and goes impact to jam point, jarring action using shock loading to being produced at the stuck point of continuous pipe, promote the completion of continuous pipe unfreezing work, reduce the unfreezing difficulty of coiled tubing, the tensile fracture for avoiding upward pulling force during coiled tubing unfreezing from being more than coiled tubing causes breaking for coiled tubing, realize the safe and efficient unfreezing of coiled tubing.
Description
Technical field
The present invention relates to continuous oily drilling technology field, more particularly to a kind of bumper jar for continuous pipe unfreezing.
Background technology
In recent years, it is more and more abundant with oil and natural gas resource exploitation.Be conducive to the petroleum resources exploited
Fewer and fewer, sight has been invested shale oil gas and some by people needs the petroleum resources of steering drilling.Rotary drilling in the past
Well method is single due to drilling direction, and operating efficiency is relatively low, gradually by applicability is wide, the continuous oil with compared with high workload efficiency
Pipe drilling technology is replaced.
When the upper lifting force required for lifting coiled tubing exceedes the 80% of its yield strength, such case is defined as connecting
Continuous oil pipe meets card.The reason for coiled tubing meets card mainly includes following several：（1）In drilling process, drilling fluid is constantly carried out
Circulation, cooling effect is played to drilling process, but the solid particle wherein contained is easily accumulated in the hole that coiled tubing passes through
Place, so as to cause the chance card of coiled tubing tubing string；（2）During coiled tubing drilling, the diameter of pit shaft is smaller, when stratum deforms
Shi Rongyi extruding oil pipe tube walls deform, so as to produce chance card-like condition；（3）Drilling tool is fallen into the drilling fluid of pit shaft
When, it is necessary to carry out fishing to it, if fishing has misoperation, also easily cause coiled tubing tubing string
Meet card；（4）During cementing job operational method go wrong generation coiled tubing meet card；（5）Perforating application mistake
The coiled tubing caused in journey due to producing a large amount of chips meets card.
In prior art, the unfreezing of coiled tubing is generally carried out using injection head, still, by injection head possesses most
Big lifting force is typically much deeper than the maximum pull that coiled tubing can bear before fracturing, once coiled tubing meets card seriously, note
The pulling force for entering head generation is well over the tensile fracture of oil pipe, directly can break coiled tubing.And once cause continuous oil
The fracture of pipe tubing string, will increase the difficulty of unfreezing, and oil well also will be unable to use.
Therefore, with the extensive use of continuous Manifold technology, how to carry out the safe unfreezing work of coiled tubing turns into one
The problem of perplexing people, it would be highly desirable to which developing a kind of can realize the bumper jar of the safe unfreezing of coiled tubing.
The content of the invention
The embodiment of the present invention provides a kind of bumper jar for continuous pipe unfreezing, it is intended to realize the safety solution of coiled tubing
Card, it is to avoid upward pulling force causes breaking for coiled tubing more than the tensile fracture of coiled tubing during coiled tubing unfreezing,
The elastic potential energy and gravitional force produced by using continuous pipe is realized constantly comes and goes impact to jam point, utilizes shock loading
Jarring action to being produced at the stuck point of continuous pipe, promotes the completion of continuous pipe unfreezing work, and the unfreezing for reducing coiled tubing is difficult
Degree, realizes the safe and efficient unfreezing of coiled tubing.
The concrete technical scheme that the present invention is provided is as follows：
The embodiment of the present invention provides a kind of bumper jar for continuous pipe unfreezing, and the bumper jar includes bumper jar housing, installed
Bumper jar mandrel in the bumper jar enclosure interior, the brute spring installed in the bumper jar enclosure interior, installed in institute
State the moveable piston bar of bumper jar enclosure interior；Wherein, the bumper jar housing is included positioned at the bumper jar case top
First chamber, the second chamber positioned at the bumper jar housing central section, the 3rd chamber positioned at the bumper jar casing center and
The 4th chamber positioned at the bottom of the bumper jar housing, the bumper jar mandrel is arranged on the first chamber, the described 3rd
In chamber and the 4th chamber, the brute spring and the moveable piston bar are arranged in the second chamber, it is described can
Mating surface between piston bar and the bumper jar mandrel is the conical surface.
Optionally, the upper end that the bumper jar mandrel includes the first cylindrical section, is connected with the first cylindrical section upper end
Lid, the conical section being connected with the first cylindrical section lower end and the second cylindrical section being connected with the conical section, wherein, institute
State upper end cover to be arranged in the first chamber, oil filler point is provided with the top of the first chamber.
Optionally, the two ends of the moveable piston bar are respectively plane and inclined-plane, wherein, the plane and the strength bullet
One end of spring is in contact, and the inclined-plane is in contact with the conical surface of the conical section.
Optionally, the cone angle on the inclined-plane is identical with the cone angle of the conical section.
Optionally, the cone angle of the conical section is 15 ° ~ 60 °.
Optionally, the cone angle of the conical section is 45 °.
Optionally, the big end of the conical section is upper, and the small end of the conical section is under.
Optionally, 4 second chambers are provided with the bumper jar housing, are set in each described second chamber
One brute spring and a moveable piston bar.
Optionally, 4 second chambers mutually in 90 ° are symmetrical arranged around the central axis of the bumper jar housing.
Optionally, it is provided with O-ring seal between the upper end cover and the contact surface of the first chamber.
Beneficial effects of the present invention are as follows：
The embodiment of the present invention provide a kind of bumper jar for continuous pipe unfreezing, including bumper jar housing, installed in bumper jar shell
The bumper jar mandrel in internal portion, the brute spring installed in bumper jar enclosure interior, installed in the movable of bumper jar enclosure interior
Piston rod；Wherein, bumper jar housing includes the first chamber positioned at bumper jar case top, the positioned at bumper jar housing central section
Two chambers, the 3rd chamber and the 4th chamber positioned at the bottom of bumper jar housing positioned at bumper jar casing center, bumper jar core
Axle is arranged in first chamber, the 3rd chamber and the 4th chamber, and brute spring and moveable piston bar are arranged in second chamber, can
Mating surface between piston bar and bumper jar mandrel is the conical surface；By injecting hydraulic oil into first chamber, with the first chamber
The downward pressure increase born on the volume increase of indoor hydraulic oil, bumper jar mandrel, the pressure on bumper jar mandrel
When acting on the upward active force on bumper jar mandrel by moveable piston bar more than brute spring, bumper jar Xinzhong Hui Association starts
Move downward；When bumper jar mandrel is moved downward, because the lower end of bumper jar mandrel is connected with coiled tubing, and then drive
Coiled tubing is moved downward；During bumper jar mandrel is moved downward, brute spring is compressed to form huge elastic potential
Can, after the hydraulic coupling in first chamber is removed, under the elastic force effect of brute spring continuous pipe can be driven upward again
Motion, continuous pipe realizes constantly impact upwards under the cooperation of bumper jar mandrel and brute spring, i.e., continuous pipe can be in strength
Produced in the presence of the elastic potential energy of spring than larger shock loading, so as to producing jarring action at the stuck point of continuous pipe,
The elastic potential energy produced by using continuous pipe is realized constantly comes and goes impact to jam point, using shock loading to continuous pipe
The jarring action produced at stuck point, promotes the completion of continuous pipe unfreezing work, reduces the unfreezing difficulty of coiled tubing, it is to avoid continuous
Upward pulling force causes breaking for coiled tubing more than the tensile fracture of coiled tubing during oil pipe unfreezing, realizes coiled tubing
Safe and efficient unfreezing.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation of bumper jar for continuous pipe unfreezing of the embodiment of the present invention；
Fig. 2 is a kind of cross section structure diagram of bumper jar for continuous pipe unfreezing of the embodiment of the present invention；
Fig. 3 is the cross section structure diagram of the bumper jar housing of the embodiment of the present invention；
Fig. 4 is the isometric side structure schematic diagram of the bumper jar mandrel of the embodiment of the present invention；
Fig. 5 is the positive structure diagram of the bumper jar mandrel of the embodiment of the present invention；
Fig. 6 is the isometric side structure schematic diagram of the moveable piston bar of the embodiment of the present invention.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
One step it is described in detail, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
Term " first ", " second ", " the 3rd " in description and claims of this specification and above-mentioned accompanying drawing, "
Four ", " 5th ", " the 6th ", " the 7th " and " the 8th " etc.（If there is）It is for distinguishing similar object, without for retouching
State specific order or precedence.It should be appreciated that the data so used can be exchanged in the appropriate case, to retouch here
The embodiments of the invention stated can for example be implemented with the order in addition to those for illustrating or describing herein.
In addition, term " comprising " and " having " and their any deformation, it is intended that covering is non-exclusive to be included, example
Such as, process, method, system, product or the equipment for containing series of steps or unit are not necessarily limited to those clearly listed
Step or unit, but may include not list clearly or for intrinsic other of these processes, method, product or equipment
Step or unit.
To realize the safe unfreezing of coiled tubing, it is to avoid upward pulling force is more than coiled tubing during coiled tubing unfreezing
Tensile fracture cause the problem of breaking of coiled tubing, the embodiment of the present invention provides the bumper jar for continuous pipe unfreezing, including
Bumper jar housing, the bumper jar mandrel installed in bumper jar enclosure interior, the brute spring installed in bumper jar enclosure interior, peace
Mounted in the moveable piston bar of bumper jar enclosure interior；Wherein, bumper jar housing includes the first chamber positioned at bumper jar case top
Room, the second chamber positioned at bumper jar housing central section, the 3rd chamber positioned at bumper jar casing center and positioned at bumper jar housing
Bottom the 4th chamber, bumper jar mandrel is arranged in first chamber, the 3rd chamber and the 4th chamber, brute spring and movable
Piston rod is arranged in second chamber, and the mating surface between moveable piston bar and bumper jar mandrel is the conical surface；By to the first chamber
Hydraulic oil is injected in room, is increased with the volume of the hydraulic oil in first chamber, the downward pressure born on bumper jar mandrel
Increase, when the pressure on bumper jar mandrel be more than brute spring acted on by moveable piston bar it is upward on bumper jar mandrel
During active force, bumper jar Xinzhong Hui Association starts to move downward；When bumper jar mandrel is moved downward, due to the lower end of bumper jar mandrel
It is connected with coiled tubing, and then drives coiled tubing to move downward；During bumper jar mandrel is moved downward, strength bullet
Spring is compressed to form huge elastic potential energy, after the hydraulic coupling in first chamber is removed, and is acted in the elastic force of brute spring
Under can drive the motion upwards of continuous pipe again, continuous pipe is realized under the cooperation of bumper jar mandrel and brute spring it is continuous to
Upper impact, i.e., continuous pipe can be produced than larger shock loading in the presence of the elastic potential energy of brute spring, so as to continuous
Jarring action is produced at the stuck point of pipe, the elastic potential energy produced by using continuous pipe is realized to recoil to the constantly past of jam point
Hit, the jarring action using shock loading to being produced at the stuck point of continuous pipe, promote the completion of continuous pipe unfreezing work, reduction connects
The unfreezing difficulty of continuous oil pipe, it is to avoid upward pulling force causes to connect more than the tensile fracture of coiled tubing during coiled tubing unfreezing
Breaking for continuous oil pipe, realizes the safe and efficient unfreezing of coiled tubing.
A kind of bumper jar for continuous pipe unfreezing of the embodiment of the present invention is carried out in detail below in conjunction with Fig. 1 ~ Fig. 6
Explanation.
With reference to shown in Fig. 1 and Fig. 2, the bumper jar for continuous pipe unfreezing of the embodiment of the present invention includes bumper jar housing
100th, the bumper jar mandrel 200 inside bumper jar housing 100, the brute spring inside bumper jar housing 100
300th, the moveable piston bar 400 inside bumper jar housing 100；Wherein, bumper jar mandrel 200 is movably mounted to jarring
The inside of device housing 100, i.e. bumper jar mandrel 200 can be moved up and down along the inner chamber of bumper jar housing 100；Moveable piston bar
400 are movably mounted in the inner chamber of bumper jar housing 100, namely moveable piston bar 400 can be along along bumper jar housing 100
Chamber is moved left and right or moved forward and backward.
Further, with reference to shown in Fig. 1, Fig. 2 and Fig. 3, bumper jar housing 100 includes being located at the top of bumper jar housing 100
First chamber 101, the second chamber 102 positioned at the middle part of bumper jar housing 100, the positioned at the center of bumper jar housing 100 the 3rd
Chamber 103 and the 4th chamber 104 positioned at the bottom of bumper jar housing 100 and positioned at the chamber 103 of first chamber 101 and the 3rd
Between the 5th chamber 105, wherein, the diameter of first chamber 101 is more than the diameter of the 5th chamber 105, the 3rd chamber 103 it is straight
Footpath is more than the diameter of the 5th chamber 105.
With reference to shown in Fig. 3, the 6th chamber 106 is additionally provided between the chamber 103 of second chamber 102 and the 3rd, wherein, first
It is company between chamber 101, second chamber 102, the 3rd chamber 103, the 4th chamber 104, the 5th chamber 105 and the 6th chamber 106
Logical state.
For first chamber 101, second chamber 102, the 3rd chamber 103, the 4th chamber 104, the 5th chamber 105 and the 6th
Connected mode between the outer wall of chamber 106, the embodiment of the present invention is not specifically limited.Example, first chamber 101, second
Spiral shell can be used between chamber 102, the 3rd chamber 103, the 4th chamber 104, the outer wall of the 5th chamber 105 and the 6th chamber 106
Line is connected.Example, first chamber 101, second chamber 102, the 3rd chamber 103, the 4th chamber 104, the 5th chamber 105
And the 6th chamber 106 outer wall between can also be fixed by the way of welding, such as, when brute spring 300 and movable
After piston rod 400 is arranged in the chamber 106 of second chamber 102 and the 6th, the outer wall of second chamber 102 is welded on the 6th chamber
On the outer wall of room 106, the outer wall of the 6th chamber 106 is welded on the outer wall of the 3rd chamber 103 again afterwards.Wherein, preferably
, first chamber 101, second chamber 102, the 3rd chamber 103, the 4th chamber 104, the 5th chamber 105 and the 6th chamber 106
Fixed between outer wall using threaded connection, threaded connection can be dismantled conveniently, realize the bumper jar core installed in bumper jar housing 100
Axle 200, the replacing of brute spring 300 and moveable piston bar 400, maintenance and maintenance.
With reference to shown in Fig. 3, the top of first chamber 101 is provided with oil filler point 107, wherein, oil filler point 107 is used for first
The inside of chamber 101 injection high pressure liquid force feed, certain oil filler point 107 can also unload oilhole as first chamber 101, when outside pressure
After power is removed, the high pressure liquid force feed in first chamber 101 can also be returned in fuel tank through oil filler point 107.It is, of course, also possible to
What the top of first chamber 101 was provided for emptying unloads oilhole, unloads to be provided with the opening of oilhole and unloads oilhole for control and open
With the switch of closing.
With reference to shown in Fig. 4 and Fig. 5, bumper jar mandrel 200 include the first cylindrical section 201, with the upper end phase of the first cylindrical section 201
The upper end cover 202 of connection, the conical section 203 being connected with the lower end of the first cylindrical section 201 and be connected with conical section 203 second
Cylindrical section 204, wherein, the first cylindrical section 201 is connected with the big end of conical section 203, the second cylindrical section 204 and conical section 203
Small end be connected.Wherein, it is preferred that the first cylindrical section 201, end cap 202, the cylindrical section 204 of conical section 203 and second use one
Body casting, the bonding strength height of the bumper jar mandrel 200 of integrally casting shaping, functional reliability are good.
With reference to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, upper end cover 202 is arranged on the inside of first chamber 101, wherein on
End cap 202 cooperates with first chamber 101, upper end cover 202 by first chamber 101 be divided into mutual disconnected upper chamber and
Lower chambers.With reference to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the external diameter of upper end cover 202 is identical with the external diameter of first chamber 101, its
Middle upper end cover 202 and first chamber 101 are circle, and upper end cover 202 on the contact surface of first chamber 101 with being provided with for close
Seal up the O-ring seal of chamber and lower chambers.Example, upper end cover 202 with set on the contact surface of first chamber 101 it is O-shaped
Sealing ring can be O-shaped rubber seal.
With reference to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the first cylindrical section 201 is arranged in the 5th chamber 105, i.e., and first
Cylindrical section 201 runs through the 5th chamber 105, and the upper end of the first cylindrical section 201 is located in first chamber 101, and lower end is located at the 3rd chamber
In room 103；Conical section 203 is arranged in the 3rd chamber 103, and the second cylindrical section 204 is arranged in the 4th chamber 104, and second
Cylindrical section 204 runs through the 4th chamber 104, and the lower end of the second cylindrical section 204 is used to connect continuous pipe.
With reference to shown in Fig. 5, the cone angle of conical section 203 is 15 ° ~ 60 °, wherein, the cone angle of conical section 203 is conical section 203
Big end radius subtract the corresponding tangent value of ratio between the difference of small end radius and the height of conical section, namely conical section
203 cone angle is corresponding just for the angle between the conical surface of conical section 203 and center vertical face, namely the taper of conical section 203
Corner cut.
With reference to shown in Fig. 6, moveable piston bar 400 includes the first round rod segment 401 and the second round rod segment 402, wherein, the first circle
Bar segment 401 is connected with the second round rod segment 402, and diameter of the diameter more than the second round rod segment 402 of the first round rod segment 401, the
The end face of one round rod segment 401 is plane 4011, and the end face of the second round rod segment 402 is inclined-plane 4021.
With reference to shown in Fig. 2, Fig. 5 and Fig. 6, the plane 4011 of the first round rod segment 401 connects with one end of brute spring 300
Touch, the other end of brute spring 300 is fixed on the end of second chamber 102.With reference to shown in Fig. 2, Fig. 5 and Fig. 6, the second round rod segment
402 inclined-plane 4021 is in contact with the conical surface of conical section 203.When bumper jar mandrel is transported upwards in the inside of bumper jar housing 100
When dynamic, moveable piston bar 400 is under the promotion of brute spring 300 along the chamber 106 of second chamber 102 and the 6th to the 3rd chamber
103 center movement；When bumper jar mandrel 200 is moved downward in the inside of bumper jar housing 100, moveable piston bar 400 exists
Under the promotion of the conical section 203 of bumper jar mandrel 200, the elastic force of brute spring 300 is overcome, along the chamber of second chamber 102 and the 6th
Center movement of the room 106 away from the 3rd chamber 103.
With reference to shown in Fig. 2, Fig. 5 and Fig. 6, the big end of conical section 203 is upper, and the small end of conical section 203 is under, i.e. bumper jar
After mandrel 200 is arranged in the inner chamber of bumper jar housing 100, the inclined-plane of the conical surface of conical section 203 and the second round rod segment 402
4021 cooperate.Wherein, the cone angle on the inclined-plane 4021 of the second round rod segment 402 is less than or equal to the cone angle size of conical section 203.
With reference to shown in Fig. 2, Fig. 5 and Fig. 6, the cone angle on the inclined-plane 4021 of the second round rod segment 402 is less than the cone angle of conical section 203
When, under the same conditions, it can increase and suppress the decrement of spring there is provided more jarring forces.Wherein, by substantial amounts of examination
After testing and attempting, find when bumper jar mandrel 200 is moved downward in the inside of bumper jar housing 100, bumper jar mandrel 200
Thrust remote small its in the vertical direction of the conical surface to the active force of moveable piston bar 400 in the horizontal direction thrust, especially not
Brute spring 300 is inwardly compressed beneficial to by moveable piston bar.It is based on this consideration, the embodiment of the present invention is preferred, second
The cone angle on the inclined-plane 4021 of round rod segment 402 is equal to the cone angle of conical section 203, and the cone angle of conical section 203 sets 45 °, that is, ensures
Upwards thrust of the brute spring 300 to bumper jar mandrel 200, also ensure that water of the bumper jar mandrel 200 to brute spring 300
The size of square upward compression stress.
With reference to shown in Fig. 1, Fig. 2 and Fig. 3,4 second chambers 102 are provided with bumper jar housing 100, each second chamber
One brute spring 300 and a moveable piston bar 400 are set in room 102；4 second chambers 102 surround bumper jar housing
100 central axis is mutually in 90 ° to be symmetrical arranged.
4 second chambers for being used to install brute spring 300 and moveable piston bar 400 are set on bumper jar housing 100
102, it is ensured that the upwardly or downwardly stability and work of motion process inside bumper jar housing 100 of bumper jar mandrel 200
Make reliability.
The embodiment of the present invention provide a kind of bumper jar for continuous pipe unfreezing, including bumper jar housing, installed in jarring
The bumper jar mandrel of device enclosure interior, the brute spring installed in bumper jar enclosure interior, installed in bumper jar enclosure interior
Moveable piston bar；Wherein, bumper jar housing is including the first chamber positioned at bumper jar case top, positioned at bumper jar housing central section
Second chamber, the 3rd chamber and the 4th chamber positioned at the bottom of bumper jar housing positioned at bumper jar casing center, jarring
Device mandrel is arranged in first chamber, the 3rd chamber and the 4th chamber, and brute spring and moveable piston bar are arranged on second chamber
In, the mating surface between moveable piston bar and bumper jar mandrel is the conical surface；By injecting hydraulic oil into first chamber, with
The downward pressure increase born on the volume increase of hydraulic oil in one chamber, bumper jar mandrel, when on bumper jar mandrel
When pressure acts on the upward active force on bumper jar mandrel by moveable piston bar more than brute spring, bumper jar Xinzhong Hui Association
Start to move downward；When bumper jar mandrel is moved downward, because the lower end of bumper jar mandrel is connected with coiled tubing, and then
Coiled tubing is driven to move downward；During bumper jar mandrel is moved downward, brute spring is compressed to form huge bullet
Property potential energy, after the hydraulic coupling in first chamber is removed, brute spring elastic force effect under can drive continuous pipe again
Motion upwards, continuous pipe is realized under the cooperation of bumper jar mandrel and brute spring constantly to be impacted upwards, i.e., continuous pipe can be
Produced in the presence of the elastic potential energy of brute spring than larger shock loading, so as to make to producing jarring at the stuck point of continuous pipe
With the elastic potential energy produced by using continuous pipe is realized constantly comes and goes impact to jam point, using shock loading to continuous
The jarring action produced at the stuck point of pipe, promotes the completion of continuous pipe unfreezing work, reduces the unfreezing difficulty of coiled tubing, it is to avoid
Upward pulling force causes breaking for coiled tubing more than the tensile fracture of coiled tubing during coiled tubing unfreezing, realizes continuous
The safe and efficient unfreezing of oil pipe.
Obviously, those skilled in the art can carry out various changes and modification without departing from this hair to the embodiment of the present invention
The spirit and scope of bright embodiment.So, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention
And its within the scope of equivalent technologies, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
1. a kind of bumper jar for continuous pipe unfreezing, it is characterised in that the bumper jar includes bumper jar housing, installed in institute
State the bumper jar mandrel of bumper jar enclosure interior, the brute spring installed in the bumper jar enclosure interior, installed in the shake
Hit the moveable piston bar of device enclosure interior；Wherein, the bumper jar housing includes first positioned at the bumper jar case top
Chamber, the second chamber positioned at the bumper jar housing central section, the 3rd chamber positioned at the bumper jar casing center and it is located at
4th chamber of the bottom of the bumper jar housing, the bumper jar mandrel is arranged on the first chamber, the 3rd chamber
In the 4th chamber, the brute spring and the moveable piston bar are arranged in the second chamber, the movable work
Mating surface between stopper rod and the bumper jar mandrel is the conical surface.
2. bumper jar according to claim 1, it is characterised in that the bumper jar mandrel includes the first cylindrical section and institute
The conical section that state upper end cover that the first cylindrical section upper end is connected, is connected with the first cylindrical section lower end and with the circular cone
The second cylindrical section that section is connected, wherein, the upper end cover is arranged in the first chamber, is set at the top of the first chamber
It is equipped with oil filler point.
3. bumper jar according to claim 2, it is characterised in that the two ends of the moveable piston bar are respectively plane and oblique
Face, wherein, the plane is in contact with one end of the brute spring, and the inclined-plane is in contact with the conical surface of the conical section.
4. bumper jar according to claim 3, it is characterised in that the cone angle phase of the cone angle on the inclined-plane and the conical section
Together.
5. bumper jar according to claim 3, it is characterised in that the cone angle of the conical section is 15 ° ~ 60 °.
6. bumper jar according to claim 3, it is characterised in that the cone angle of the conical section is 45 °.
7. the bumper jar according to any one of claim 1 ~ 6, it is characterised in that the big end of the conical section is described upper
The small end of conical section is under.
8. bumper jar according to claim 7, it is characterised in that 4 described second are provided with the bumper jar housing
One brute spring and a moveable piston bar are set in chamber, each described second chamber.
9. bumper jar according to claim 8, it is characterised in that 4 second chambers surround the bumper jar housing
Central axis mutually in 90 ° be symmetrical arranged.
10. bumper jar according to claim 2, it is characterised in that the upper end cover and the contact surface of the first chamber
Between be provided with O-ring seal.
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| CN201710754174.0A CN107313735B (en) | 2017-08-29 | 2017-08-29 | A kind of bumper jar for continuous pipe unfreezing |
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| CN201710754174.0A CN107313735B (en) | 2017-08-29 | 2017-08-29 | A kind of bumper jar for continuous pipe unfreezing |
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| CN107313735B CN107313735B (en) | 2019-04-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847836A (en) * | 2019-11-25 | 2020-02-28 | 西南石油大学 | Underground seismic source nipple while drilling |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107313735B (en) | 2019-04-26 |
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Effective date of registration: 20190326 Address after: 312599 No. 15, 271 East Road, Yulin Street, Xinchang County, Shaoxing City, Zhejiang Province Applicant after: XINCHANG COUNTY YULIN STREET HONGBO MACHINERY FACTORY Address before: 266000 Unit 501, Unit 3, 51 Fenghua Road, Southern District of Qingdao City, Shandong Province Applicant before: Yu Chao |
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