CN106285559A - Pressure-controlled normally open valve and pressure-controlled normally close valve combination unit and operational approach thereof - Google Patents
Pressure-controlled normally open valve and pressure-controlled normally close valve combination unit and operational approach thereof Download PDFInfo
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- CN106285559A CN106285559A CN201510283749.6A CN201510283749A CN106285559A CN 106285559 A CN106285559 A CN 106285559A CN 201510283749 A CN201510283749 A CN 201510283749A CN 106285559 A CN106285559 A CN 106285559A
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- 239000007788 liquid Substances 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract description 2
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Abstract
The present invention provides a kind of pressure-controlled normally open valve and pressure-controlled normally close valve combination unit and operational approach thereof, and described device is to include that pressure-controlled normally open valve, by-pass connection, packer, pilot cross stream joint, pressure-controlled normally close valve, transit joint and three kinds of combinations of pressure tube；The most pressure-controlled normally open valve enters well with open mode, it can make oil jacket annular space and keep in tubing string connecting before closing, design attitude delivered to by the deep instrument of supplementary mode high-ranking officers using direct circulation pumping in high angle hole, horizontal well, replaces into circulation canal during low density flow operation in being also used for tubing string；Pressure-controlled normally close valve enters well with closed mode, for and temporary transient for low density flow trap is finally realized negative pressure open flow in perforation tubular column.This device, be applicable to straight well, inclined shaft and horizontal well, can realize the timely operation such as upper lifting pipe post, negative pressure open flow institutional operation after employing one-trip string completes to balance perforation, perforation, have the advantages such as short construction period, low cost, risk is little, labor intensity is low.
Description
Technical field
The present invention relates to perforating oil gas well completion technique field, be specifically related to a kind of pressure-controlled normally open valve and combine with pressure-controlled normally close valve
Device and operational approach thereof.
Background technology
At present, balance perforation and the realization on one-trip string of the negative pressure open flow technology, main employing perforation tubular column connects caber opening type
Negative pressure valve, reaches vacuum cavitations requirement by the way of adding fluid cushion above caber opening type negative pressure valve, controlling tubing string liquid height,
After tubing string puts in place, cable transfers gamma magnetic orientation instrument, CD, perforation of lighting a fire after adjusting tubing string, confirms perforating gun igniting
After success, tubing string played perforated interval, set packer, broke negative pressure valve by caber, carried out negative pressure open flow；This tubing string
Advantage is to realize balancing after perforation, perforation upper lifting pipe post in time in straight well, prevents sand card, additionally can also be broken by caber negative
Pressure valve realizes negative pressure open flow, and shortcoming is for high angle hole, and difficulty transferred by cable depth correction instrument device, and it is easy that caber drives negative pressure valve
Failure, is not suitable for high angle hole, horizontal well operation.
Along with in offshore oil field development, high angle hole, horizontal well get more and more, for the hole deviation hole condition more than 60 degree, offshore oilfield
In balance perforation-negative pressure open flow well-completing process, mainly take to balance one-trip string, negative pressure open flow under perforation descend executing of one-trip string again
Work technique.But, owing to operation on the sea is with high costs, use the mode of tubing string operation twice, substantial amounts of operation will be increased undoubtedly
The construction risk such as cost and trouble of lost tool in hole.
Summary of the invention
In order to overcome the drawbacks described above of prior art, the technical problem to be solved be to provide a kind of pressure-controlled normally open valve with
Pressure-controlled normally close valve combination unit and operational approach thereof, after can realizing one-trip string balance perforation in straight well, inclined shaft, horizontal well
The in time operation such as upper lifting pipe post, negative pressure open flow institutional operation, has that short construction period, low cost, construction risk be little, work
The advantages such as intensity is low.
The above-mentioned purpose of the present invention can use following technical proposal to realize:
A kind of pressure-controlled normally open valve and pressure-controlled normally close valve combination unit, it is in perforation completion tubing string, and described tubing string is arranged in
In oil jacket annular space, described tubing string has the first end of close oil and gas wellhead and away from the second end of described oil and gas wellhead, described tubing string
Including: from the first end to the first subsystem of the second end sequential concatenation, pressure-controlled normally open valve and pressure-controlled normally close valve combination unit with
And perforation subsystem；
It is characterized in that, described pressure-controlled normally open valve and pressure-controlled normally close valve combination unit, it includes combining one: from the first end to
The pressure-controlled normally open valve of the second end sequential concatenation, by-pass connection, packer, pilot cross stream joint, pressure-controlled normally close valve, transition
Joint and pass through packer, the pressure tube of pressure-controlled normally close valve；
Or, it includes combining two: from the first end to the by-pass connection of the second end sequential concatenation, packer, pressure-controlled normally open valve,
Pilot is crossed stream joint, pressure-controlled normally close valve, transit joint and passes through packer, pressure-controlled normally open valve, the biography of pressure-controlled normally close valve
Pressure pipe；
Or, it includes combining three: from the first end to the by-pass connection of the second end sequential concatenation, packer, pressure-controlled normally close valve,
Pilot is crossed stream joint, pressure-controlled normally open valve, transit joint and passes through packer, pressure-controlled normally close valve, the biography of pressure-controlled normally open valve
Pressure pipe；
Wherein, described pressure-controlled normally open valve enters well in the on-state, and described pressure-controlled normally open valve includes:
Urceolus, can connect adding of oil jacket annular space including offering on outer wall to offer on the first urceolus of the second flow-guiding channel and outer wall
Second urceolus of pressure passageway, described pressurization passageway can install the rupture disk pre-setting fracture pressure value；
There is the sliding sleeve of inner chamber, the sidewall of described sliding sleeve offers the first flow-guiding channel connecting described sliding sleeve inner chamber, described cunning
Set is positioned at described urceolus and forms the first annular space and air chamber with described urceolus, and described sliding sleeve can pass through shear pin and described urceolus phase
Connecting, described sliding sleeve can slide along own axes direction, the outer wall of described sliding sleeve offers the step surface with first shoulder,
So that high pressure liquid can press to described sliding sleeve from described first annular space；
Described sliding sleeve has at least two operating position, when described sliding sleeve is positioned at the first operating position, described sliding sleeve pass through described in cut
Pin is connected with described urceolus, and described first flow-guiding channel is connected with described second flow-guiding channel；Described sliding sleeve is positioned at the second work
When making position, described in cut off fracture, described first flow-guiding channel is staggered with described second flow-guiding channel；
Described pressure-controlled normally close valve enters well with closed mode.
Preferably, described pressure-controlled normally close valve includes:
Urceolus, can connect adding of oil jacket annular space including offering on outer wall to offer on the first urceolus of the second flow-guiding channel and outer wall
Second urceolus of pressure passageway, described pressurization passageway can install the rupture disk pre-setting fracture pressure value；
There is the sliding sleeve of inner chamber, the sidewall of described sliding sleeve offers the first flow-guiding channel connecting described sliding sleeve inner chamber, described cunning
Set is positioned at described urceolus and forms the first annular space and air chamber with described urceolus, and described sliding sleeve can pass through shear pin and described urceolus phase
Connecting, described sliding sleeve can slide along own axes direction, the outer wall of described sliding sleeve offers the step surface with first shoulder,
So that high pressure liquid can press to described sliding sleeve from described first annular space；
Described sliding sleeve has at least two operating position, when described sliding sleeve is positioned at the first operating position, described sliding sleeve pass through described in cut
Pin is connected with described urceolus, and described first flow-guiding channel is staggered with described second flow-guiding channel；Described sliding sleeve is positioned at the second work
When making position, described in cut off fracture, described first flow-guiding channel is connected with described second flow-guiding channel.
Preferably, in described pressure-controlled normally open valve, the outer wall of described sliding sleeve is provided with the second shoulder, at described second shoulder
Being provided with cushion, the inwall of described second urceolus is provided with the 3rd shoulder, when described sliding sleeve is sliding to the direction compressing described air chamber
Time dynamic, described second shoulder moves closer to described 3rd shoulder, until described second shoulder and described cushion and the described 3rd
Shoulder abuts against.
Preferably, in described pressure-controlled normally open valve, in the outside of described sliding sleeve, the first described flow-guiding channel is with described
At least one sealing member it is provided with between cutting off.
Preferably, described pilot is crossed stream joint and is provided with and produces the flow channels of channel connection in tubing string, and described pilot crosses stream
Joint is additionally provided with the pilot passage connected with oil jacket annular space.
The present invention also provides for the operational approach using above-mentioned pressure-controlled normally open valve with pressure-controlled normally close valve combination unit, including walking as follows
Rapid:
A, assembling tubing string, lower tubular column: described pressure-controlled normally open valve is set to open mode, described pressure-controlled normally close valve is arranged
For closed mode, closing presure value P1 of pressure-controlled normally open valve, igniter pressure value P2 of igniter head and pressure-controlled are respectively provided with it
The unlatching pressure value P 3 of normally close valve；
Pressure-controlled normally open valve is used to include with the perforation completion tubing string of pressure-controlled normally close valve combination unit: suitable to the second end from the first end
First subsystem of sequence concatenation, pressure-controlled normally open valve and pressure-controlled normally close valve combination unit and perforation subsystem；Described first
Subsystem include from the first end to the oil pipe of the second end sequential concatenation, the deep pipe nipple in the school deep for electrical measurement school, for jarring releasing
Bumper jar, the safety joint freed for safety；Described perforation subsystem includes from the first end subtracting to the second end sequential concatenation
Shake device, first igniter head, perforating gun and second point duration and degree of heating；Said modules is assembled into balance perforation-negative pressure open flow institutional operation
Tubing string, and down near target location, down-hole；
B, school are deep: under to enter depth correction instrument device school deep, if running into dependence self gravitation when being difficult to down to precalculated position, then start pump truck,
Take the supplementary mode that direct circulation pumps, deliver to design attitude and till smoothly school is deep until the deep instrument of high-ranking officers；After school is terminated deeply,
Adjust the tubing string degree of depth according to the deep result in school, make perforating gun be directed at interval to be perforated；
Replace in C, tubing string into low density flow: start pump truck, use direct circulation mode, in oil pipe, pump into low density flow replace
Original well killing fluid, returns output according to oil jacket annular space and calculates the height of low density flow in oil pipe, until meeting the need of negative pressure open flow
Till Yaoing, direct circulation closes oil pipe plug valve, by temporary transient for low density flow trap in oil pipe after terminating；
D, close pressure-controlled normally open valve: use and close pressurization (or closing oil pipe, oil jacket applied pressure by annulus) in oil jacket annular space, oil pipe
Mode bottom pressure is boosted, until bottom pressure reaches closing presure value P1 of pressure-controlled normally open valve, make pressure-controlled often
Valve opening is transformed into closed mode；
E, balance perforation and emptying: connect relief line, first open oil pipe plug valve emptying, then use oil jacket applied pressure by annulus, make
Igniter head reaches the igniting of igniter pressure value P2, completes to balance perforation；
Or: connect relief line, first use oil jacket applied pressure by annulus, make igniter head reach the igniting of igniter pressure value P2, complete to put down
After weighing apparatus perforation, then open oil pipe plug valve emptying；
F, upper lifting pipe post and set: upper lifting pipe post, trip out part oil pipe, carried by packer to being difficult to sand card and the well suitably set
Duan Hou, according to the hints on operation set packer of packer and carry out testing envelope；
G, negative pressure open flow: use oil jacket applied pressure by annulus to the unlatching pressure value P 3 of pressure-controlled normally close valve, make pressure-controlled normally close valve turn
Change to open mode, then carry out negative pressure open flow；
H, kill-job, deblocking, lift pipe string: after negative pressure open flow terminates, carry out washing/kill-job, deblocking, trip out balance perforation-negative pressure and put
Spray institutional operation tubing string.
By above technical scheme, it is an advantage of the current invention that: (1), by arranging pressure-controlled normally open valve in a device, meets straight
In well, inclined shaft, horizontal well construction, tubing string school relies on depth correction instrument device difficulty under self gravitation, needs to take direct circulation donkey pump time deep
Send and tubing string domestic demand is replaced into requirements such as low density flows；(2) by arranging pressure-controlled normally close valve in a device, it is achieved balance is penetrated
Behind hole, timely upper lifting pipe post, set packer, the pressure-controlled normally close valve of reconvert carry out the functions such as negative pressure open flow to open mode；(3)
Cross stream joint by arranging pilot in a device, the flow channels of negative pressure open flow can be provided for above-mentioned perforation completion tubing string, again
The pilot passage of connection oil jacket annular space can be provided for pressure-controlled normally close valve and/or pressure-controlled normally open valve.Compared with prior art, use
The perforation completion tubing string of the present invention have simple to operate, that short construction period, low cost, operating risk are little, labor intensity is low etc. is excellent
Point.
Accompanying drawing explanation
Accompanying drawing described here is only used for task of explanation, and is not intended to limit scope disclosed by the invention by any way.It addition,
The shape of each parts in figure and proportional sizes etc. are only schematically, are adapted to assist in the understanding of the present invention, are not concrete limit
Determine shape and the proportional sizes of each parts of the present invention.Those skilled in the art under the teachings of the present invention, can be according to concrete feelings
Condition selects various possible shapes and proportional sizes to implement the present invention.
Fig. 1 is the pressure-controlled normally open valve structural representation with pressure-controlled normally close valve combination unit of the first embodiment of the present invention；
Fig. 2 is the structural representation of the balance perforation-negative pressure open flow institutional operation tubing string using first embodiment of the invention；
Fig. 3 is the pressure-controlled normally open valve structural representation with pressure-controlled normally close valve combination unit of the second embodiment of the present invention；
Fig. 4 is the pressure-controlled normally open valve structural representation with pressure-controlled normally close valve combination unit of the third embodiment of the present invention.
Detailed description of the invention
In conjunction with accompanying drawing and the description of the specific embodiment of the invention, it is possible to clearly understand the details of the present invention.But,
The detailed description of the invention of this present invention described, is only used for explaining the purpose of the present invention, and it is right for can not being understood as by any way
The restriction of the present invention.Under the teachings of the present invention, technical staff it is contemplated that the most possible deformation of based on the present invention, these
It is regarded as belonging to the scope of the present invention.
As Figure 1-4, the invention provides a kind of pressure-controlled normally open valve and pressure-controlled normally close valve combination unit 1, it is used for putting down
In weighing apparatus perforation-negative pressure open flow institutional operation tubing string 100, balance perforation-negative pressure open flow institutional operation tubing string 100 is arranged in oil
In set annular space, having the first end of close oil and gas wellhead and away from the second end of described oil and gas wellhead, tubing string 100 includes: from the
One end is to the first subsystem 11 of the second end sequential concatenation, pressure-controlled normally open valve and pressure-controlled normally close valve combination unit 1 and perforation
Subsystem 12.
Refer to Fig. 1-4, the first of a kind of pressure-controlled normally open valve that the present invention provides and pressure-controlled normally close valve combination unit 1, the
Two, the 3rd embodiment all includes pressure-controlled normally open valve 3 and pressure-controlled normally close valve 4, and the most pressure-controlled normally open valve 3 includes:
Urceolus, can connect oil jacket ring including offering on outer wall to offer on the first urceolus 31 of the second flow-guiding channel 311 and outer wall
Second urceolus 39 of empty pressurization passageway 391, described pressurization passageway 391 can be installed and be pre-set rupturing of fracture pressure value
Dish 3911；
There is the sliding sleeve 33 of inner chamber, the sidewall of described sliding sleeve 33 offer the first flow-guiding channel 331 of connection sliding sleeve 33 inner chamber,
Sliding sleeve 33 is positioned at urceolus and forms the first annular space 390 and air chamber 393 with urceolus, and sliding sleeve 33 can pass through shear pin 34 and urceolus
Be connected, sliding sleeve 33 can along own axes to the direction of compressed air cell 393 slide, the outer wall of sliding sleeve 33 offers with
The step surface 333 of first shoulder 332, so that high pressure liquid can press to sliding sleeve 33 from the first annular space 390；
Sliding sleeve 33 has at least two operating position, when sliding sleeve 33 is positioned at the first operating position, sliding sleeve 33 by cut off 34 with
Urceolus is connected, and the first flow-guiding channel 331 is connected with the second flow-guiding channel 311；When sliding sleeve 33 is positioned at the second operating position,
Cutting off 34 fractures, the first flow-guiding channel 331 is staggered with the second flow-guiding channel 311.Rupture disk 3911 with cut off 34 as double
Insurance, can slide by anti-anti-skid sheath 33 in advance.
Referring again to Fig. 1-4, pressure-controlled normally close valve 4 includes:
Urceolus, can connect oil jacket ring including offering on outer wall to offer on the first urceolus 41 of the second flow-guiding channel 411 and outer wall
Second urceolus 49 of empty pressurization passageway 491, pressurization passageway 491 rupture disk pre-setting fracture pressure value can be installed
4911；
There is the sliding sleeve 43 of inner chamber, the sidewall of sliding sleeve 43 offers the first flow-guiding channel 431 of connection sliding sleeve 43 inner chamber, sliding
Set 43 is positioned at urceolus and forms the first annular space 490 and air chamber 493 with urceolus, and sliding sleeve 43 can pass through shear pin 44 and urceolus phase
Connecting, sliding sleeve 43 can slide along own axes direction, the outer wall of sliding sleeve 43 offers the step surface with first shoulder 432
433, so that high pressure liquid can press to sliding sleeve 43 from the first annular space 490；
Sliding sleeve 43 has at least two operating position, when sliding sleeve 43 is positioned at the first operating position, sliding sleeve 43 by cut off 44 with
Urceolus is connected, and the first flow-guiding channel 431 is isolated with the second flow-guiding channel 411；When sliding sleeve 43 is positioned at the second operating position,
Cutting off 44 fractures, the first flow-guiding channel 431 is connected with the second flow-guiding channel 411.Rupture disk 4911 with cut off 44 as double
Insurance, can slide by anti-anti-skid sheath 43 in advance.
Referring again to Fig. 1, in the pressure-controlled normally open valve first embodiment with pressure-controlled normally close valve combination unit 1, pilot crosses stream
Joint 6 is provided with and produces the flow channels 61 that passage 22 connects in tubing string, and pilot is crossed stream joint 6 and is additionally provided with oil jacket annular space even
Logical pilot passage 62；Pressurization passageway 491 can be mounted rupture disk 4911, only when reaching from the pressure of pressurization passageway 21
During predetermined value, rupture disk 4911 just ruptures, and then pilot passage 62 connects with pressurization passageway 491 and the first annular space 490.
Referring again to Fig. 3-4, in pressure-controlled normally open valve second, third embodiment with pressure-controlled normally close valve combination unit 1,
Pilot is crossed stream joint 6 and is provided with and produces the flow channels 61 that passage 22 connects in tubing string, and pilot is crossed stream joint 6 and is additionally provided with and oil
The pilot passage 62 and 62a of set annular space connection；Pressurization passageway 491,391 can be mounted rupture disk 4911,3911 respectively, only
Have when reaching the predetermined fracture pressure value of each rupture disk from the pressure of pressurization passageway 21, rupture disk 4911,3911 just meeting
Rupturing respectively, pilot passage 62 can connect with first annular space the 490, first annular space 390 respectively.
Refer to Fig. 1-4, in first, second, third embodiment of pressure-controlled normally open valve Yu pressure-controlled normally close valve combination unit 1
In, the specifically used method of pressure-controlled normally open valve 3 is as follows: pressure-controlled normally open valve 3 is arranged on open mode lower going-into-well, at Qi Guan
Make oil jacket annular space before closing and keep in tubing string 100 connecting, for using when depth correction instrument device cannot rely on deadweight down to design attitude
The deep instrument of supplementary mode high-ranking officers of direct circulation pumping delivers to design attitude, when replacing in being also used for tubing string 100 into low density flow operation
Circulation canal.After school is deep and replaces low density flow to terminate in tubing string 100, uses and close in oil jacket annular space, oil pipe 110
Bottom pressure is boosted by the mode of pressurization (or closing oil pipe 110, oil jacket applied pressure by annulus), until bottom pressure reaches pressure
Closing presure value P1 of control formula normally open valve 3, makes rupture disk 3911 rupture, and high pressure liquid is from the first port of pressure-controlled normally open valve 3
391 the first annular spaces 390 entering pressure-controlled normally open valve 3, hydraulic action, at sliding sleeve 33 step surface 333, fixes sliding sleeve 33
Cutting off 34 to be cut off by pressure, sliding sleeve 33 will depart from the constraint of the first urceolus 31, under the effect of the pressure to compressed air cell
Slide in the direction of 393, and the air in compressed air cell 393, until the second shoulder 334 of sliding sleeve 33 and cushion 38 and
3rd shoulder 394 of the second urceolus 39 stops after abutting against, now, outside the first flow-guiding channel 331 and first on sliding sleeve 33
The second flow-guiding channel 311 on cylinder 31 is staggered, and can close formula screen casing subelement 3 and complete to close.
Refer to Fig. 1-4, in first, second, third embodiment of pressure-controlled normally open valve Yu pressure-controlled normally close valve combination unit 1
In, the specifically used method of pressure-controlled normally close valve 4 is as follows: pressure-controlled normally close valve 4 is arranged on closed mode lower going-into-well, works as needs
Open pressure-controlled normally close valve 4 when carrying out negative pressure open flow, use oil jacket applied pressure by annulus, make the pressurized passage of high pressure liquid 21, pressure tube
7, enter pilot passage 62 and/or 62a, until bottom pressure reaches closing presure value P3 of pressure-controlled normally close valve 4, make to rupture
Dish 4911 ruptures, and high pressure liquid enters the first annular space 490 of pressure-controlled normally close valve 4 from the first port 491 of pressure-controlled normally close valve 4,
Hydraulic action is at sliding sleeve 43 step surface 433, and cutting off of fixing sliding sleeve 43 44 can be cut off by pressure, and sliding sleeve 43 will depart from
The constraint of the first urceolus 41, slides to the direction of compressed air cell 493 under the effect of the pressure, and in compressed air cell 493
Air, until the 3rd shoulder 494 of the second shoulder 434 of sliding sleeve 43 and cushion 48 and the second urceolus 49 stops after abutting against
Only, now, the first flow-guiding channel 431 on sliding sleeve 43 is connected with the second flow-guiding channel 411 on the first urceolus 41, can
Pass formula screen casing subelement 4 is transformed into open mode, then carries out negative pressure open flow.
Referring again to Fig. 1, in the pressure-controlled normally open valve first embodiment with pressure-controlled normally close valve combination unit 1, comprising:
Stream joint 6, pressure is crossed to the pressure-controlled normally open valve 3 of the second end sequential concatenation, by-pass connection 2, packer 5, pilot from the first end
Control formula normally close valve 4, transit joint 8, pass through the pressure tube 7 of packer 5 and pass through the pressure tube 7a of pressure-controlled normally close valve 4.
Referring again to Fig. 3, in the pressure-controlled normally open valve the second embodiment with pressure-controlled normally close valve combination unit 1, comprising:
Stream joint 6, pressure is crossed to the by-pass connection 2 of the second end sequential concatenation, packer 5, pressure-controlled normally open valve 3, pilot from the first end
Control formula normally close valve 4, transit joint 8, pass through packer 5 and the pressure tube 7 of pressure-controlled normally open valve 3 and pass through pressure-controlled normally closed
The pressure tube 7a of valve 4.
Referring again to Fig. 4, in the pressure-controlled normally open valve the 3rd embodiment with pressure-controlled normally close valve combination unit 1, comprising:
Stream joint 6, pressure is crossed to the by-pass connection 2 of the second end sequential concatenation, packer 5, pressure-controlled normally close valve 4, pilot from the first end
Control formula normally open valve 3, transit joint 8, pass through packer 5 and the pressure tube 7 of pressure-controlled normally close valve 4 and pass through pressure-controlled normally opened
The pressure tube 7a of valve 3.
The present invention also provides for the operational approach using above-mentioned pressure-controlled normally open valve with pressure-controlled normally close valve combination unit 1, including as follows
Step:
A, assembling tubing string, lower tubular column: pressure-controlled normally open valve 3 is set to open mode, pressure-controlled normally close valve 4 is set to off
Closed state, has been respectively provided with closing presure value P1 of pressure-controlled normally open valve 3, the igniter pressure value of igniter head (122 or 122a)
The unlatching pressure value P 3 of P2 and pressure-controlled normally close valve 4；
Pressure-controlled normally open valve is used to include with the perforation completion tubing string of pressure-controlled normally close valve combination unit 1: from the first end to the second end
First subsystem 11 of sequential concatenation, pressure-controlled normally open valve and pressure-controlled normally close valve combination unit 1 and perforation subsystem 12；'s
First subsystem 11 include from the first end to the oil pipe 110 of the second end sequential concatenation, the deep pipe nipple in the school deep for electrical measurement school 111,
For the bumper jar 112 of jarring releasing, for the safety joint 113 freed safely；Perforation subsystem 12 include from the first end
To amortisseur 121, first igniter head 122, perforating gun 123 and the second point duration and degree of heating 122a of the second end sequential concatenation；By above-mentioned
Assembling components becomes balance perforation-negative pressure open flow institutional operation tubing string 100, and down near target location, down-hole；
B, school are deep: under to enter depth correction instrument device school deep, if running into dependence self gravitation when being difficult to down to precalculated position, then start pump truck,
Take the supplementary mode that direct circulation pumps, deliver to design attitude and till smoothly school is deep until the deep instrument of high-ranking officers；After school is terminated deeply,
Adjust the tubing string degree of depth according to the deep result in school, make perforating gun be directed at interval to be perforated；
Replace into low density flow in C, tubing string 100: start pump truck, use direct circulation mode, in oil pipe 110, pump into low-density
Fluid replaces original well killing fluid, returns output according to annular space and calculates the height of low density flow in oil pipe, until meeting negative pressure open flow
Needs till, direct circulation terminate after close oil pipe plug valve, by temporary transient for low density flow trap in oil pipe；
D, close pressure-controlled normally open valve 3: use and close pressurization in oil jacket annular space, oil pipe 100 and (or close oil pipe 100, oil jacket
Applied pressure by annulus) mode bottom pressure is boosted, until bottom pressure reaches closing presure value P1 of pressure-controlled normally open valve,
Pressure-controlled normally open valve 3 is made to be transformed into closed mode；
E, balance perforation and emptying: connect relief line, first open oil pipe plug valve emptying, then use oil jacket applied pressure by annulus, make
Igniter head 122 (or 122a) reaches the igniting of igniter pressure value P2, completes to balance perforation；
Or: connect relief line, first use oil jacket applied pressure by annulus, make igniter head 122 (or 122a) reach igniter pressure value
P2 lights a fire, and after completing to balance perforation, then opens oil pipe plug valve emptying；
F, upper lifting pipe post 100 and set: upper lifting pipe post 100, trip out part oil pipe 110, carry packer 5 to being difficult to sand card
And after the well section suitably set, according to the hints on operation set packer 5 of packer 5 and carry out testing envelope；
G, negative pressure open flow: use oil jacket applied pressure by annulus to the unlatching pressure value P 3 of pressure-controlled normally close valve 4, make pressure-controlled normally close valve 4
It is transformed into open mode, then carries out negative pressure open flow；
H, kill-job, deblocking, lift pipe string: after negative pressure open flow terminates, carry out washing/kill-job, deblocking, trip out balance perforation-negative pressure and put
Spray institutional operation tubing string 100.
In a preferred embodiment, the outer wall of pressure-controlled normally open valve 3 sliding sleeve 33 is provided with the second shoulder 334, the second shoulder
Being provided with cushion 38 at 334, the inwall of the second urceolus 39 is provided with the 3rd shoulder 394, when sliding sleeve 33 is to compressed air cell 393
Direction when sliding, the second shoulder 334 moves closer to the 3rd shoulder 394, until the second shoulder 334 and cushion 38 and the
Three shoulders 394 abut against.Similar with pressure-controlled normally open valve 3, the outer wall of pressure-controlled normally close valve 4 sliding sleeve 43 also is provided with second
Shoulder 434, is provided with cushion 48 at the second shoulder 434, the inwall of the second urceolus 49 is provided with the 3rd shoulder 494, works as sliding sleeve
43 when sliding to the direction of compressed air cell 493, and the second shoulder 434 moves closer to the 3rd shoulder 494, until the second shoulder
434 abut against with cushion 48 and the 3rd shoulder 494.
Preferably, in the pressure-controlled normally open valve first, second, third embodiment with pressure-controlled normally close valve combination unit 1,
In pressure-controlled normally open valve 3, in the outside of sliding sleeve 33, the first flow-guiding channel 331 and cutting off is provided with at least one and seals between 34
Part 32c；In addition, between outside and the urceolus of sliding sleeve 33, it is additionally provided with sealing member 32a, 32b, 32d and 37；With this type of
Seemingly, in pressure-controlled normally close valve 4, between the outside and urceolus of sliding sleeve 43, also be provided with sealing member 42b, 42c, 42d and
47.Above sealing member is preferably sealing ring.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and what each embodiment stressed is real with other
Executing the difference of example, between each embodiment, identical similar part sees mutually.
Above-described embodiment, only for technology design and the feature of the explanation present invention, its object is to allow the person skilled in the art can
Understand present disclosure and implement according to this, can not limit the scope of the invention with this.All according to spirit of the invention
The equivalence change made or modification, all should contain within protection scope of the present invention.
Claims (6)
1. pressure-controlled normally open valve and a pressure-controlled normally close valve combination unit, it is in perforation completion tubing string, and described tubing string wears
In oil jacket annular space, described tubing string has the first end of close oil and gas wellhead and away from the second end of described oil and gas wellhead, described pipe
Post includes: from the first end to the first subsystem of the second end sequential concatenation, pressure-controlled normally open valve and pressure-controlled normally close valve combination unit
And perforation subsystem；
It is characterized in that, described pressure-controlled normally open valve and pressure-controlled normally close valve combination unit, it includes combining one: from the first end to
The pressure-controlled normally open valve of the second end sequential concatenation, by-pass connection, packer, pilot cross stream joint, pressure-controlled normally close valve, transition
Joint and pass through packer, the pressure tube of pressure-controlled normally close valve；
Or, it includes combining two: from the first end to the by-pass connection of the second end sequential concatenation, packer, pressure-controlled normally open valve,
Pilot is crossed stream joint, pressure-controlled normally close valve, transit joint and passes through packer, pressure-controlled normally open valve, the biography of pressure-controlled normally close valve
Pressure pipe；
Or, it includes combining three: from the first end to the by-pass connection of the second end sequential concatenation, packer, pressure-controlled normally close valve,
Pilot is crossed stream joint, pressure-controlled normally open valve, transit joint and passes through packer, pressure-controlled normally close valve, the biography of pressure-controlled normally open valve
Pressure pipe；
Wherein, described pressure-controlled normally open valve enters well in the on-state, and described pressure-controlled normally open valve includes:
Urceolus, can connect adding of oil jacket annular space including offering on outer wall to offer on the first urceolus of the second flow-guiding channel and outer wall
Second urceolus of pressure passageway, described pressurization passageway can install the rupture disk pre-setting fracture pressure value；
There is the sliding sleeve of inner chamber, the sidewall of described sliding sleeve offers the first flow-guiding channel connecting described sliding sleeve inner chamber, described cunning
Set is positioned at described urceolus and forms the first annular space and air chamber with described urceolus, and described sliding sleeve can pass through shear pin and described urceolus phase
Connecting, described sliding sleeve can slide along own axes direction, the outer wall of described sliding sleeve offers the step surface with first shoulder,
So that high pressure liquid can press to described sliding sleeve from described first annular space；
Described sliding sleeve has at least two operating position, when described sliding sleeve is positioned at the first operating position, described sliding sleeve pass through described in cut
Pin is connected with described urceolus, and described first flow-guiding channel is connected with described second flow-guiding channel；Described sliding sleeve is positioned at the second work
When making position, described in cut off fracture, described first flow-guiding channel is staggered with described second flow-guiding channel；
Described pressure-controlled normally close valve enters well with closed mode.
Pressure-controlled normally open valve the most according to claim 1 and pressure-controlled normally close valve combination unit, it is characterised in that described
Pressure-controlled normally close valve includes:
Urceolus, can connect adding of oil jacket annular space including offering on outer wall to offer on the first urceolus of the second flow-guiding channel and outer wall
Second urceolus of pressure passageway, described pressurization passageway can install the rupture disk pre-setting fracture pressure value；
There is the sliding sleeve of inner chamber, the sidewall of described sliding sleeve offers the first flow-guiding channel connecting described sliding sleeve inner chamber, described cunning
Set is positioned at described urceolus and forms the first annular space and air chamber with described urceolus, and described sliding sleeve can pass through shear pin and described urceolus phase
Connecting, described sliding sleeve can slide along own axes direction, the outer wall of described sliding sleeve offers the step surface with first shoulder,
So that high pressure liquid can press to described sliding sleeve from described first annular space；
Described sliding sleeve has at least two operating position, when described sliding sleeve is positioned at the first operating position, described sliding sleeve pass through described in cut
Pin is connected with described urceolus, and described first flow-guiding channel is staggered with described second flow-guiding channel；Described sliding sleeve is positioned at the second work
When making position, described in cut off fracture, described first flow-guiding channel is connected with described second flow-guiding channel.
Pressure-controlled normally open valve the most according to claim 1 and pressure-controlled normally close valve combination unit, it is characterised in that described
Pressure-controlled normally open valve in, the outer wall of described sliding sleeve is provided with the second shoulder, is provided with cushion at described second shoulder, described
The inwall of two urceolus is provided with the 3rd shoulder, when described sliding sleeve slides to the direction compressing described air chamber, and described second shoulder
Move closer to described 3rd shoulder, until described second shoulder abuts against with described cushion and described 3rd shoulder.
4. a pressure-controlled normally open valve according to claim 1 and pressure-controlled normally close valve combination unit, it is characterised in that in institute
In the pressure-controlled normally open valve stated, in the outside of described sliding sleeve, the first described flow-guiding channel and described cut off between be provided with at least
One sealing member.
Pressure-controlled normally open valve the most according to claim 1 and pressure-controlled normally close valve combination unit, it is characterised in that described
Pilot is crossed stream joint and is provided with and produces the flow channels of channel connection in tubing string, and described pilot is crossed stream joint and is additionally provided with and oil jacket ring
The pilot passage of empty connection.
6. use an operational approach for the pressure-controlled normally open valve described in claims 1 and pressure-controlled normally close valve combination unit, bag
Include following steps:
A, assembling tubing string, lower tubular column: described pressure-controlled normally open valve is set to open mode, described pressure-controlled normally close valve is arranged
For closed mode, closing presure value P1 of pressure-controlled normally open valve, igniter pressure value P2 of igniter head and pressure-controlled are respectively provided with it
The unlatching pressure value P 3 of normally close valve；
Pressure-controlled normally open valve is used to include with the perforation completion tubing string of pressure-controlled normally close valve combination unit: suitable to the second end from the first end
First subsystem of sequence concatenation, pressure-controlled normally open valve and pressure-controlled normally close valve combination unit and perforation subsystem；Described first
Subsystem include from the first end to the oil pipe of the second end sequential concatenation, the deep pipe nipple in the school deep for electrical measurement school, for jarring releasing
Bumper jar, the safety joint freed for safety；Described perforation subsystem includes from the first end subtracting to the second end sequential concatenation
Shake device, first igniter head, perforating gun and second point duration and degree of heating；Said modules is assembled into balance perforation-negative pressure open flow institutional operation
Tubing string, and down near target location, down-hole；
B, school are deep: under to enter depth correction instrument device school deep, if running into dependence self gravitation when being difficult to down to precalculated position, then start pump truck,
Take the supplementary mode that direct circulation pumps, deliver to design attitude and till smoothly school is deep until the deep instrument of high-ranking officers；After school is terminated deeply,
Adjust the tubing string degree of depth according to the deep result in school, make perforating gun be directed at interval to be perforated；
Replace in C, tubing string into low density flow: start pump truck, use direct circulation mode, in oil pipe, pump into low density flow replace
Original well killing fluid, returns output according to oil jacket annular space and calculates the height of low density flow in oil pipe, until meeting the need of negative pressure open flow
Till Yaoing, direct circulation closes oil pipe plug valve, by temporary transient for low density flow trap in oil pipe after terminating；
D, close pressure-controlled normally open valve: use and close pressurization (or closing oil pipe, oil jacket applied pressure by annulus) in oil jacket annular space, oil pipe
Mode bottom pressure is boosted, until bottom pressure reaches closing presure value P1 of pressure-controlled normally open valve, make pressure-controlled often
Valve opening is transformed into closed mode；
E, balance perforation and emptying: connect relief line, first open oil pipe plug valve emptying, then use oil jacket applied pressure by annulus, make
Igniter head reaches the igniting of igniter pressure value P2, completes to balance perforation；
Or: connect relief line, first use oil jacket applied pressure by annulus, make igniter head reach the igniting of igniter pressure value P2, complete to put down
After weighing apparatus perforation, then open oil pipe plug valve emptying；
F, upper lifting pipe post and set: upper lifting pipe post, trip out part oil pipe, carried by packer to being difficult to sand card and the well suitably set
Duan Hou, according to the hints on operation set packer of packer and carry out testing envelope；
G, negative pressure open flow: use oil jacket applied pressure by annulus to the unlatching pressure value P 3 of pressure-controlled normally close valve, make pressure-controlled normally close valve turn
Change to open mode, then carry out negative pressure open flow；
H, kill-job, deblocking, lift pipe string: after negative pressure open flow terminates, carry out washing/kill-job, deblocking, trip out balance perforation-negative pressure and put
Spray institutional operation tubing string.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510283749.6A CN106285559B (en) | 2015-05-29 | 2015-05-29 | Pressure-controlled normally open valve is combined the unit with pressure-controlled normally close valve and its operating method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510283749.6A CN106285559B (en) | 2015-05-29 | 2015-05-29 | Pressure-controlled normally open valve is combined the unit with pressure-controlled normally close valve and its operating method |
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| CN106285559A true CN106285559A (en) | 2017-01-04 |
| CN106285559B CN106285559B (en) | 2018-09-07 |
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| CN201510283749.6A Active CN106285559B (en) | 2015-05-29 | 2015-05-29 | Pressure-controlled normally open valve is combined the unit with pressure-controlled normally close valve and its operating method |
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| Publication number | Publication date |
|---|---|
| CN106285559B (en) | 2018-09-07 |
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Effective date of registration: 20180718 Address after: 325000 Zhejiang province Wenzhou Longwan District Yongxing Street Hong Kong Road 32 Applicant after: LIANGGANG VALVE GROUP CO., LTD. Address before: 301607 Tianjin Jinghai County, Tianjin Petroleum Vocational and Technical College Applicant before: Zhang Luming |
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