CN106150445A - One-trip string two-layer layering perforation-zonal testing axle-linked cable-car and operational approach thereof - Google Patents
One-trip string two-layer layering perforation-zonal testing axle-linked cable-car and operational approach thereof Download PDFInfo
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- CN106150445A CN106150445A CN201510173379.0A CN201510173379A CN106150445A CN 106150445 A CN106150445 A CN 106150445A CN 201510173379 A CN201510173379 A CN 201510173379A CN 106150445 A CN106150445 A CN 106150445A
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- 238000012360 testing method Methods 0.000 title claims abstract description 77
- 238000007789 sealing Methods 0.000 claims abstract description 103
- 238000005070 sampling Methods 0.000 claims abstract description 65
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- 210000002445 nipple Anatomy 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000011010 flushing procedure Methods 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000005553 drilling Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The present invention is about one-trip string two-layer layering perforation-zonal testing axle-linked cable-car and operational approach, this tubing string includes oil pipe one, the deep pipe nipple in school, oil pipe two, circulating valve, oil pipe three, test valve assembly, manometer two, pressure-transmitting joint two, across every packer, screen casing two, spacer tube, pressure guiding joint, igniter head two, perforating gun two, pressure relief device, sealing closing well sampling valve, vibration absorption pressure gauge supporting cylinder, pressure-transmitting joint one, anchor packer, screen casing one, amortisseur, oil pipe four, light a fire first, perforating gun one, pressure releasing device, interior pressure tube two, interior pressure tube one, outer pressure tube two, outer pressure tube one, described sealing closing well sampling valve is between perforating gun two and anchor packer, described vibration absorption pressure gauge supporting cylinder is positioned at below sealing closing well sampling valve.Use above-mentioned tubing string can complete the layering perforation of two-layer, zonal testing connection is made, and makes the final shut-in of ground floor without individually taking the working rig time, and well sampling is convenient, has that the cycle is short, low cost and other advantages.
Description
Technical field
The present invention is about a kind of Oil/gas Well two-layer perforation, test string and operational approach thereof, refers in particular to one-trip string two-layer and divides
Layer perforation-zonal testing axle-linked cable-car and operational approach thereof.
Background technology
In formation testing gas well, for the realization in multilamellar operation of the perforating test technology, general employing is layered many times tubing string perforations surveys
Examination, or one-trip string to several close on stratum simultaneously perforation after carry out the mode of multilamellar hybrid test.Many times tubing string perforating test sides
The shortcoming of formula is repeatedly to play lower tubular column, causes that perforating test cycle length, speed are slow, cost is high, easily pollutes oil-gas Layer；
And the mode closing layer perforating test is difficult to enroll the data such as the production capacity of each substratum, fluidity, pressure build-up curve, have impact on formation testing
Conclusion and the most qualitative to reservoir.
Yuan Jicheng et al. is disclosed in the paper " a tubing string multilamellar perforation one testing combination operation technology " of " well logging and perforation " magazine
A kind of " a tubing string multilamellar perforation-point test tube post ", specifically includes that and seals under pressure setting type upper packer, machinery setting type
Every instruments such as devices, three layers of layering perforation-point survey can be realized.Use similar principle can realize two-layer layering perforation-point survey, its
Operation principle is: after packer setting, adds oil pressure, opens pressure drilling valve V1 above, then by following circulating valve V2
Light a fire to the perforating gun below lower packet；After having tested, add ring pressure, close V2, block circulation passage and the test of lower floor
Passage, continues to add ring pressure, to one layer of perforating gun igniting above V2, the yield of the test second layer.Weak point is: (1) adopts
Ground floor igniting is carried out, it is difficult to obtain required negative pressure by the mode of oil pipe pressurization；(2) can not realize in the ground floor final shut-in phase
Between carry out second layer perforation, test, it is impossible to save ground floor test the final shut-in time；(3) while ground floor final shut-in not
Well sampling can be realized；(4) lower packet can not be tested envelope.
Summary of the invention
There is cycle length for many times tubing string perforating test modes described in background technology, speed is slow, cost is high and closes layer perforation and survey
Examination mode is difficult to enroll the shortcomings such as the production capacity of each substratum, fluidity, pressure build-up curve data, and an existing " tubing string multilamellar
Layering perforation-point test tube post " problem such as final shut-in time of ground floor test can not be saved, it is an object of the invention to provide one
Plant one-trip string two-layer layering perforation-zonal testing axle-linked cable-car, one-trip string can be realized and just can complete the layering perforation of two-layer, divide
Layer testing combination operation, has the outstanding advantages such as short construction period, low cost.
This purpose is to be realized by following technical scheme:
One-trip string two-layer layering perforation-zonal testing axle-linked cable-car, including oil pipe one, the deep pipe nipple in school, oil pipe two, circulating valve,
Oil pipe three, test valve assembly, manometer two, pressure-transmitting joint two, across connecing every packer, screen casing two, spacer tube, pilot
Head, igniter head two, perforating gun two, pressure relief device, sealing closing well sampling valve, vibration absorption pressure gauge supporting cylinder, pressure-transmitting joint one,
Anchor packer, screen casing one, amortisseur, oil pipe four, light a fire first, perforating gun one, pressure releasing device, interior pressure tube two, interior biography
Pressure pipe one, outer pressure tube two, outer pressure tube one, described across forming two-stage packer, perforating gun every packer and anchor packer
Two between two-stage packer, and perforating gun one is positioned at the lower section of two-stage packer, pressure-transmitting joint two and pressure-transmitting joint one position respectively
In across every packer, the top of anchor packer, interior pressure tube two and interior pressure tube one pass through respectively across every packer, slips envelope
Every device, sealing closing well sampling valve is between perforating gun two and anchor packer, and vibration absorption pressure gauge supporting cylinder is positioned at the sampling of sealing closing well
The lower section of valve.
Described sealing closing well sampling valve is the tubular body of a multilamellar, radially with outer layer, intermediate layer and internal layer, described outer layer edge
Connect the most from top to bottom and have top connection, air chamber joint, ball valve urceolus, setting-out valve union and lower contact, outside air chamber joint
Wall is provided with outer pressure tube import and the outlet of outer pressure tube；Described intermediate layer has the heart being slidably disposed in inside described outer layer
Axle, mandrel is fixed on top connection by cutting off, and described intermediate layer the most sequentially sets in the axis extended line direction of mandrel lower end edge mandrel
There are connection pawl, connecting short section, top race and bottom race, top race sidewall offers two parallel grooves, two strips
Motion arm is embedded in said two parallel groove respectively, the top of motion arm and the bottom snapping of connecting short section；Described internal layer exists
It is provided with upper ball base, lower ball base in upper and lower seat ring and is incorporated into the ball valve in two ball seats, between ball valve and upper ball base, being provided with a spring,
And ball valve coordinates with the protruding operating side of motion arm；Described top connection is provided with outer circulation hole, and described mandrel is in described outer circulation hole
Inner side is additionally provided with interior circulation port.
Whereby, before entering well, the outer circulation hole of above-mentioned sealing closing well sampling valve is in the position axially aligned, and ball with interior circulation port
Valve is in feed-through locations, and the production passage of sealing closing well sampling valve is in open mode；When needs sealing, from oil jacket annular space pump
Enter to operate pressure (p2), together with liquid column hydrostatic pressure, enter interior pressure tube two from pressure-transmitting joint two, arrive pressure guiding joint, then lead to
Cross outer pressure tube two, outer pressure tube import enters sealing closing well sampling valve, acts in mandrel, cuts off and cut off, promotes under mandrel
Enforcement ball valve is closed, and mandrel is pushed against further downward, makes interior circulation port stagger downwards, until inside and outside circulation port is in pass
Closed position, closes and produces passage, complete sealing and ground floor closing well, and now encirclement formation fluid sample above ball valve, complete
Become the well sampling of ground floor.
It is preferred that above-mentioned sealing closing well sampling valve air chamber axial length more than ball valve close axial stroke, also greater than interior,
The axial stroke of arrival closed position, outer circulation hole.
It is preferred that above-mentioned sealing closing well sampling valve top connection be blind, setting-out valve union outer wall is provided with setting-out valve assembly
And plug, for ground setting-out.
It is preferred that the described ball valve of above-mentioned sealing closing well sampling valve is provided with two potholes, operate with the protruding of each motion arm respectively
End fastens；And described connecting short section lower end has a groove, the upper end of described motion arm has projection, this projection be connected short
The groove of joint lower end fastens.
It is preferred that the outer wall of the described mandrel of above-mentioned sealing closing well sampling valve coordinates place with top connection inwall, within it on circulation port
Portion is provided with no less than two groups of sealing ring groups, interior circulation port and being provided with no less than one group of sealing ring group between cutting off；Above-mentioned sealing closing well
The outer wall of the described mandrel of sampling valve coordinates place with air chamber joint, cuts off and is provided with no less than one group of sealing ring group between air chamber,
It is provided with below air chamber no less than one group of sealing ring group.
It is preferred that the top of the described connection pawl of above-mentioned sealing closing well sampling valve utilizes elastic card in the lower end of described mandrel.
In above-mentioned tubing string, described across being all ballast setting type packer every packer and anchor packer.
In above-mentioned tubing string, the two ends of described outer pressure tube two are connected respectively to pressure guiding joint and the outer pressure tube of sealing closing well sampling valve
Import.
In above-mentioned tubing string, the two ends of described outer pressure tube one are connected respectively to the outlet of outer pressure tube and the pressure transmission of sealing closing well sampling valve
Joint one.
The present invention also provides for the operational approach of above-mentioned one-trip string two-layer layering perforation-zonal testing axle-linked cable-car, including walking as follows
Rapid:
First step ground floor perforation: one-trip string two-layer is layered perforation-zonal testing axle-linked cable-car G.I.H projected depth, school
Deeply, adjust after tubing string, set packer, pump into operation pressure (p1) by oil jacket annular space and ignite perforating gun one, complete first
Layer perforation；
Second step ground floor test (without the final shut-in of ground floor): after ground floor perforation, according to the hints on operation of test valve assembly
Carry out multiple switching well, complete to carry out ground floor test (without the final shut-in of this layer)；
3rd step ground floor sealing (final shut-in comprising ground floor): pump into operation pressure (p2) by annular space and close sealing closing well
Sampling valve, completes ground floor sealing and final shut-in (while sealing, is automatically performed the well sampling of ground floor, and enters first
The final shut-in of layer)；
4th step well-flushing, make negative pressure: after completing ground floor sealing, according to detail design requirement, as needed well-flushing, make negative pressure, then
Open circulating valve carry out well-flushing, make negative pressure after turn off circulating valve；Otherwise, skip the 4th step, enter the 5th step；
5th step second layer perforation: pump into operation pressure (p3) by oil jacket annular space and ignite perforating gun two, complete second layer perforation；
6th step second layer test: after second layer perforation, carries out multiple switching well according to the hints on operation of test valve assembly, completes
Carry out second layer test；
7th step kill-job, deblocking, lift pipe string: after completing the test of whole layer, open circulating valve, carry out well-flushing, kill-job operation；
After kill-job terminates, tear well head, direct upper lifting pipe post open, unseal whole packer successively, one-trip string two-layer is layered perforation-layering
Testing combination operation tubing string all trips out.
The operational approach of system made by one-trip string two-layer layering perforation-zonal testing connection as above, wherein: operation pressure (p1)
＜ operation pressure (p2) ＜ operation pressure (p3).
Whereby, when oil jacket annular space pump into operation pressure (p1) time, make igniting first realize igniting, and sealing closing well sampling valve and
Cutting off of igniter head two is not cut off；Further, when oil jacket annular space pumps into operation pressure (p2), sealing closing well is made to sample valve
Cut off and cut off (first having lighted a fire complete owing to lighting a fire before this, now automatically use) as plug, close sealing closing well sampling valve,
While realizing ground floor sealing, enter the final shut-in of ground floor；Further, when oil jacket annular space pumps into operation pressure (p3),
(first, sealing closing well sampling valve action of lighting a fire before this is complete, the most automatically as plug to make cutting off of igniter head two cut off
Use), make igniter head two realize igniting.
Whereby, by pressure data after sealing that the piezometer entrained by manometer and vibration absorption pressure gauge supporting cylinder is enrolled whether
Unanimously it is analyzed, it is judged that anchor packer sealing during testing.
By above technical scheme, it is an advantage of the current invention that:
(1) can be supporting with the test valve such as MFE, APR, one-trip string realizes the layering perforation of two-layer, zonal testing, improves
Data admission quality, beneficially formation testing put forward effect, raising formation testing by layer ratio, and anchor packer can be tested envelope.
(2) use to oil jacket annular space apply difference pump pressure mode, be respectively completed ground floor perforation, ground floor sealing and closing well,
Second layer perforation.
(3) by arranging sealing closing well sampling valve and arranging vibration absorption pressure gauge supporting cylinder between sealing closing well sampling valve and ground floor
The mode of (carrying piezometer), during carrying out ground floor final shut-in, can carry out second layer perforation, test, make ground floor
Final shut-in need not individually take the working rig time, optimizes the activity duration, it is achieved that formation testing puies forward effect.
(4) this technique itself also can reduce lower tubular column, kill-job number of times, reaches to shorten the formation testing cycle, save working rig when taking
Between, reach cost-effective, reduce well control risk, reduce the purposes such as reservoir pollution.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram of one-trip string two-layer of the present invention layering perforation-zonal testing axle-linked cable-car；
Accompanying drawing 2 is the half sectional view of the sealing closing well sampling valve of the present invention；
Accompanying drawing 3 is the sealing closing well sampling valve sectional view in air chamber part of the present invention；
Accompanying drawing 4 is the sealing closing well sampling valve sectional view at setting-out valve portion of the present invention；
Accompanying drawing 5 is the partial half view at ball valve assembly part of the sealing closing well sampling valve of the present invention.
In accompanying drawing 1: 1 oil pipe one, 1a oil pipe two, 1b oil pipe three, 1c oil pipe four, the 2 deep pipe nipples in school, 3 circulating valves, 4 survey
Examination valve assembly, 5 manometers two, 5a vibration absorption pressure gauge supporting cylinder, 6 pressure-transmitting joints two, 7 across every packer, 8 screen casings two,
Pressure tube two in 9, pressure tube one in 9a, 10 spacer tubes, 11 pressure guiding joints, 12 igniter head two, 13 perforating guns two, outside 14
Pressure tube two, the outer pressure tube one of 14a, 15 pressure relief devices, 16 sealing closing well sampling valves, 17 pressure-transmitting joints one, 18 cards
Watt packer, 19 screen casings one, 20 amortisseurs, 21 igniting are first, 22 perforating guns one, 23 pressure releasing devices, 29 second layers, and 30
Ground floor, 31 sleeve pipes, 32 oil jacket annular spaces；
In accompanying drawing 2-4: 101 top connections, the outer by-pass prot of 101a, 102 mandrels, 102a internal bypass hole, 103 cut off, 104 unofficial biography
Pressure pipe import, 105 outer pressure tube outlets, 106 air chamber joints, 106a air chamber, 107 connect pawl, 108 ball valve urceolus, and 109 even
Connect pipe nipple, 110 motion arms, 111 top races, 112 springs, 113 upper ball bases, 114 ball valves, 115 lower ball bases, 116 bottom races, 117
Setting-out valve union, 118 lower contacts, 119 setting-out valve assemblies, 120 plugs, 131 sealing ring groups, 131a sealing ring group, 131b seals
Circle group, 131c sealing ring group, 132 jackscrews, 133 sealing ring groups, 134 sealing ring groups, 135 cushions, 136 jackscrews, 137 is close
Seal group, 138 support rings, 139 support rings, 140 sealing ring groups, 141 sealing ring groups, 142 sealing ring groups, 143 jackscrews, 144 is close
Seal group, 145 sealing ring groups, 146 sealing ring groups, 147 jackscrews, 148 sealing ring groups, 149 sealing ring groups；
In accompanying drawing 5: 109a groove, 110a projection operating side, 110b is protruding, 114a pothole.
Detailed description of the invention
For making the purpose of the present invention, technological means and technique effect have more completely and clearly disclosing, below it is described in detail,
And see also accompanying drawing and part numbers.
The present invention provides the sealing closing well sampling valve of a kind of reasonable and compact in structure, as shown in Figure 2.See also Fig. 2-4 below,
The sealing closing well sampling valve 16 of the present invention may be connected on described two-layer layering perforation-zonal testing axle-linked cable-car, is a multilamellar
Tubular body, this sealing closing well sampling valve connects the most from top to bottom radially with outer layer, intermediate layer and internal layer, described outer layer
There are top connection 101, air chamber joint 106, ball valve urceolus 108, setting-out valve union 117 and lower contact 118, air chamber joint
106 outer walls are provided with outer pressure tube import 104 and outer pressure tube outlet 105；Described intermediate layer have be slidably disposed in described
Mandrel 102 inside outer layer, mandrel 102 is fixed on top connection 101 by cutting off 103, and described intermediate layer is in mandrel 102 lower end
Axis extended line direction along mandrel 102 is the most sequentially provided with connection pawl 107, connecting short section 109, top race 111 and bottom race
116, top race 111 sidewall offers two parallel grooves, the motion arm 110 of two strips is embedded at said two respectively
In parallel groove, the top of motion arm 110 and the bottom snapping of connecting short section 109；Described internal layer is at top race 111, lower seat
It is provided with upper ball base 113, lower ball base 115 and the ball valve 114 being incorporated in two ball seats, between ball valve 114 and upper ball base in circle 116
113 are provided with a spring 112, and ball valve 114 coordinates with the protruding operating side 110a of motion arm 110；Described top connection 101 sets
Having outer circulation hole 101a, described mandrel 102 is additionally provided with interior circulation port 102a in the inner side of described outer circulation hole 101a.
Further, referring again to Fig. 2, the axial length of the air chamber 106a of above-mentioned sealing closing well sampling valve 16 is mandrel 102
Descending maximum axial distance, the axial stroke closed more than ball valve 114, also greater than interior circulation port 102a, outer circulation hole 101a
Arrive the axial stroke of closed position.
Further, referring again to Fig. 2-5, above-mentioned sealing closing well sampling valve top connection 101 be blind, in order to sealing and
The fluid sample of encirclement ground floor 30 during closing well；On setting-out valve union 117 outer wall, setting-out valve assembly 119 and plug are installed
120, in order to ground setting-out.
Further, referring again to Fig. 2-5, the described ball valve 114 of above-mentioned sealing closing well sampling valve 16 is provided with two potholes
114a, the protruding operating side 110a with each motion arm 110 fastens respectively, moves axially to ball valve 114 realizing mandrel 102
The motion conversion rotated；And described connecting short section 109 lower end has a groove 109a, the upper end of described motion arm 110 has convex
Playing 110b, this projection 110b fastens with the groove 109a of connecting short section 109 lower end, can make mandrel 102 by inlay card design
Axially the transmission of sunken caves is more stable reliably.
Further, above-mentioned sealing closing well sampling valve 16 in, on described mandrel 102 outer wall near upper end surface be provided with one group close
Seal group 131, this outer wall is provided with two groups of sealing ring groups 131a at interior circulation port 102a top, close interior circulation port 102a；
On above-mentioned mandrel 102 outer wall interior circulation port 102a and cut off between 103, be provided with at interior circulation port 102a two groups close
Seal group 131b；On the outer wall that described mandrel 102 coordinates with air chamber joint 106, be positioned at above air chamber 106a, close
Mandrel 102 outer wall of air chamber 106a is provided with one group of sealing ring group 134, mandrel 102 outer wall below air chamber 106a
It is provided with one group of sealing ring group 131c.Utilize above structure, stop fluid to pass through from gap.
Further, the top of described connection pawl 107 utilizes elastic card in the lower end of described mandrel 102.
The sealing closing well sampling valve of the invention described above, its operation principle is as follows:
Referring again to Fig. 1-2, before entering well, at the outer circulation hole 101a and interior circulation port 102a of above-mentioned sealing closing well sampling valve 16
In the position axially aligned, and ball valve 114 is in feed-through locations, and the production passage of now sealing closing well sampling valve 16 is in be opened
State.Sealing closing well sampling valve 16 is in open mode and enters well.Its operation principle is: when needs ground floor 30 perforation, from
Oil jacket annular space 32 pumps into operation pressure (p1), together with liquid column hydrostatic pressure, and pressure tube 29 in pressure-transmitting joint 26 enters,
Arrive pressure guiding joint 11, then crimped by outer pressure tube 2 14, outer pressure tube import 104, outer pressure tube outlet 105, unofficial biography
First 17, interior pressure tube one 9a enters, and acts in igniting first 16, completes ground floor 30 and light a fire；When needs sealing,
Pumping into operation pressure (p2) from oil jacket annular space 32, aforesaid operations pressure (p2), together with liquid column hydrostatic pressure, enters from outer pressure tube
Mouth 104 enters sealing closing wells sampling valves 16, acts in mandrel 102, cuts off and cut off 103, promotes mandrel to exercise balls 102 times
Valve 114 cuts out, and mandrel 102 is pushed against further downward, makes interior circulation port 102a stagger downwards, until interior circulation port 102a,
101a is in the closed position in outer circulation hole, closes and produces passage, completes sealing and ground floor 30 closing well, now on ball valve 114
Side's encirclement formation fluid sample, completes the well sampling of ground floor 30.
The present invention also provides for a kind of one-trip string two-layer layering perforation-zonal testing axle-linked cable-car, including oil pipe 1, the deep pipe nipple in school
2, oil pipe two 1a, circulating valve 3, oil pipe three 1b, test valve assembly 4, manometer 25, pressure-transmitting joint 26, across every
Packer 7, screen casing 28, spacer tube 10, pressure guiding joint 11, igniter head 2 12, perforating gun 2 13, pressure relief device
15, sealing closing well sampling valve 16, vibration absorption pressure gauge supporting cylinder 5a, pressure-transmitting joint 1, anchor packer 18, screen casing 1,
Amortisseur 20, oil pipe four 1c, light a fire first 21, perforating gun 1, pressure releasing device 23, interior pressure tube 29, interior pressure tube one
9a, outer pressure tube 2 14, outer pressure tube one 14a.It is described across forming two-stage packer every packer 7 and anchor packer 18,
Perforating gun 2 13 is between two-stage packer, and perforating gun 1 is positioned at the lower section of two-stage packer, pressure-transmitting joint 26 and biography
Crimp first 17 and lay respectively at across every packer 7, the top of anchor packer 18, interior pressure tube 29 and interior pressure tube one 9a
Passing through respectively across every packer 7, anchor packer 18, sealing closing well sampling valve 16 is positioned at perforating gun 2 13 and anchor packer
Between 18, manometer 25 and vibration absorption pressure gauge supporting cylinder 5a are provided with piezometer.
Further, described across being all ballast setting type packer every packer 7 and anchor packer 18, in order to insulate oil jacket ring
Sky 32, the second layer 29, ground floor 30.
Further, described vibration absorption pressure gauge supporting cylinder 5a is positioned at the lower section of sealing closing well sampling valve 16, sealing closing well sampling valve 16
After closedown, can realize surveying ground floor 30 final shut-in pressure, ground floor 30 final shut-in and the most individually take working rig time and right
The purpose of envelope tested by anchor packer 18.
Further, described outer pressure tube 2 14 two ends are connected respectively to pressure guiding joint 11 and the unofficial biography of sealing closing well sampling valve 16
Pressure pipe import 104；Described outer pressure tube one 14a two ends are connected respectively to the outer pressure tube outlet 105 of sealing closing well sampling valve 16
With pressure-transmitting joint 1.
The described instrument set of locations shown in accompanying drawing 1 to specifications is dressed up rear one-trip string two-layer layering perforation-zonal testing connection
Go into the well as tubing string.
The present invention also provides for the operational approach of above-mentioned one-trip string two-layer layering perforation-zonal testing axle-linked cable-car, including walking as follows
Rapid:
First step ground floor 30 perforation: one-trip string two-layer is layered perforation-zonal testing axle-linked cable-car G.I.H projected depth,
School is deep, adjust tubing string, set packer after, pump into operation pressure (p1) by oil jacket annular space 32 and ignite perforating gun 1,
Complete ground floor and penetrate 30 holes；
Second step ground floor 30 is tested (without the final shut-in of ground floor): after ground floor 30 perforation, according to test valve assembly 4
Hints on operation carries out multiple switching well, completes to carry out ground floor 30 and tests (without the final shut-in of this layer)；
3rd step ground floor 30 sealing (final shut-in comprising ground floor): pump into operation pressure (p2) by oil jacket annular space 32 and close
Close sealing closing well sampling valve 16, complete ground floor 30 sealing and final shut-in (while sealing, is automatically performed the down-hole of ground floor
Sampling, and enter the final shut-in of ground floor 30)；
4th step well-flushing, make negative pressure: after completing ground floor 30 sealing, according to detail design requirement, as needed well-flushing, making negative pressure,
Then open circulating valve 3 carry out well-flushing, make negative pressure after turn off circulating valve 3；Otherwise, skip the 4th step, enter the 5th step；
The 5th step second layer 29 perforation: pump into operation pressure (p3) by oil jacket annular space 32 and ignite perforating gun 2 13, complete the
Two layer of 29 perforation；
The 6th step second layer 29 is tested: after the second layer 29 perforation, carries out multiple switching according to the hints on operation of test valve assembly 4
Well, completes to carry out the second layer 29 and tests；
7th step kill-job, deblocking, lift pipe string: after completing the test of whole layer, open circulating valve 3, carry out well-flushing, kill-job operation；
After kill-job terminates, tear well head, direct upper lifting pipe post open, unseal whole packer successively, one-trip string two-layer is layered perforation-layering
Testing combination operation tubing string all trips out.
In aforesaid operations method, described operation pressure (p1) ＜ operation pressure (p2) ＜ operation pressure (p3).
Whereby, when oil jacket annular space 32 pumps into operation pressure (p1), make igniting first 21 realize igniting, and sealing closing well takes
Sample valve 16 and cutting off of igniter head 2 12 are not cut off；Further, when oil jacket annular space 32 pumps into operation pressure (p2),
Make cutting off of sealing closing well sampling valve 16 103 cut off (due to light a fire before this first 21 lighted a fire complete, now automatically as stifled
Head uses), close sealing closing well sampling valve 16, it is achieved while ground floor 30 sealing, enter the final shut-in of ground floor 30；
Further, when oil jacket annular space 32 pumps into operation pressure (p3), make cutting off of igniter head 2 12 cut off and (light a fire before this first
21, sealing closing well sampling valve 16 action is complete, the most automatically uses as plug), make igniter head 2 12 realize igniting.
Whereby, by pressure data after the sealing to the piezometer admission entrained by manometer 5 and vibration absorption pressure gauge supporting cylinder 5a
The most unanimously it is analyzed, it is judged that the anchor packer 18 sealing during testing.
In aforesaid operations method, each layer of oil-gas Layer is before final shut-in, if it is desired, can also carry out storey increase design operation.
The schematic section Example of the present invention that is only provided above, and be not used to limit the scope of the present invention, any this area
Technical staff, equivalent variations done on the premise of without departing from the design of the present invention and principle and amendment, all should be included in this
Within scope of patent protection.
Claims (7)
1. one-trip string two-layer layering perforation-zonal testing axle-linked cable-car, this tubing string include oil pipe one (1), the deep pipe nipple in school (2),
Oil pipe two (1a), circulating valve (3), oil pipe three (1b), test valve assembly (4), manometer two (5), pressure-transmitting joint
Two (6), across every packer (7), screen casing two (8), spacer tube (10), pressure guiding joint (11), igniter head two (12), penetrate
Hole rifle two (13), pressure relief device (15), sealing closing well sampling valve (16), vibration absorption pressure gauge supporting cylinder (5a), pressure transmission connect
First (17), anchor packer (18), screen casing one (19), amortisseur (20), oil pipe four (1c), light a fire first (21),
Perforating gun one (22), pressure releasing device (23), interior pressure tube two (9), interior pressure tube one (9a), outer pressure tube two (14), outer
Pressure tube one (14a), it is characterised in that: described across forming two-stage packer every packer (7) and anchor packer (18),
Described perforating gun two (13) is between two-stage packer, and described perforating gun one (22) is positioned at the lower section of two-stage packer, institute
State pressure-transmitting joint two (6) and pressure-transmitting joint one (17) lay respectively at across every packer (7), the top of anchor packer (18),
Described interior pressure tube two (9) and interior pressure tube one (9a) pass through respectively across every packer (7), anchor packer (18), institute
State sealing closing well sampling valve (16) to be positioned between perforating gun two (13) and anchor packer (18), described vibration absorption pressure gauge supporting
Cylinder (5a) is positioned at the lower section of sealing closing well sampling valve (16).
One-trip string two-layer layering perforation-zonal testing axle-linked cable-car the most according to claim 1, it is characterised in that: described
Sealing closing well sampling valve (16) is the tubular body of a multilamellar, and radially with outer layer, intermediate layer and internal layer, described outer layer is along axle
Connect to from top to bottom and have top connection (101), air chamber joint (106), ball valve urceolus (108), setting-out valve union (117)
With lower contact (118), air chamber joint (106) outer wall is provided with outer pressure tube import (104) and outer pressure tube outlet (105)；
Described intermediate layer has the mandrel (102) being slidably disposed in inside described outer layer, and mandrel (102) is by cutting off (103)
Being fixed on top connection (101), described intermediate layer also depends in the axis extended line direction of mandrel (102) lower end edge mandrel (102)
Sequence is provided with connection pawl (107), connecting short section (109), top race (111) and bottom race (116), top race (111) side
Offering two parallel grooves on wall, the motion arm (110) of two strips is embedded in said two parallel groove respectively, behaviour
Make the top of arm (110) and the bottom snapping of connecting short section (109)；Described internal layer be provided with in upper and lower seat ring upper ball base (113),
Lower ball base (115) and the ball valve (114) being incorporated in two ball seats, between ball valve (114) and upper ball base, (113) are provided with a spring
(112), and ball valve (114) coordinates with the protruding operating side of motion arm (110)；Described top connection (101) is provided with outer circulation
Hole (101a), described mandrel (102) is additionally provided with interior circulation port (102a) in the inner side of described outer circulation hole (101a).
One-trip string two-layer layering perforation-zonal testing axle-linked cable-car the most according to claim 1, it is characterised in that: described
Across being all ballast setting type packer every packer (7) and anchor packer (18).
One-trip string two-layer layering perforation-zonal testing axle-linked cable-car the most according to claim 1, it is characterised in that: described
The two ends of outer pressure tube two (14) are connected respectively to the outer pressure tube of pressure guiding joint (11) and sealing closing well sampling valve (16) and enter
Mouth (104).
One-trip string two-layer layering perforation-zonal testing axle-linked cable-car the most according to claim 1, it is characterised in that: described
The two ends of outer pressure tube one (14a) are connected respectively to outer pressure tube outlet (105) and the pressure transmission of sealing closing well sampling valve (16)
Joint one (17).
6. manage based on one-trip string two-layer layering perforation-zonal testing connection described in claim 1 or 2 or 3 or 4 or 5 for one kind
The operational approach of post:
First step ground floor (30) perforation: by deep for one-trip string two-layer layering perforation-zonal testing axle-linked cable-car G.I.H design
Degree, school is deep, adjust tubing string, set packer after, pump into operation pressure (p1) by oil jacket annular space and ignite perforating gun one, complete
Become ground floor perforation；
Second step ground floor test (without the final shut-in of ground floor): after ground floor perforation, according to the behaviour of test valve assembly (4)
Carry out multiple switching well as main points, complete to carry out ground floor test (without the final shut-in of this layer)；
3rd step ground floor sealing (final shut-in comprising ground floor): pump into operation pressure (p2) by oil jacket annular space and close sealing
Closing well sampling valve (16), complete ground floor sealing and final shut-in (while sealing, be automatically performed the well sampling of ground floor, and
Enter the final shut-in of ground floor)；
4th step well-flushing, make negative pressure: after completing ground floor sealing, according to detail design requirement, as needed well-flushing, make negative pressure, then
Open circulating valve (3) carry out well-flushing, make negative pressure after turn off circulating valve (3)；Otherwise, skip the 4th step, enter the 5th step；
The 5th step second layer (29) perforation: pump into operation pressure (p3) by oil jacket annular space and ignite perforating gun two, complete second
Layer perforation；
6th step second layer test: after second layer perforation, carry out multiple switching well according to the hints on operation of test valve assembly (4),
Complete to carry out second layer test；
7th step kill-job, deblocking, lift pipe string: after completing the test of whole layer, open circulating valve (3), carry out well-flushing, kill-job work
Industry；After kill-job terminates, tear well head, direct upper lifting pipe post open, unseal whole packer successively, by one-trip string two-layer layering perforation-
Zonal testing axle-linked cable-car all trips out.
The operational approach of one-trip string two-layer layering perforation-zonal testing axle-linked cable-car, its feature the most according to claim 6
It is: described operation pressure (p1) ＜ operation pressure (p2) ＜ operation pressure (p3).
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| CN201510173379.0A CN106150445B (en) | 2015-04-14 | 2015-04-14 | Two layers of layering perforation-zonal testing axle-linked cable-car of one-trip string and its operating method |
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| CN201510173379.0A CN106150445B (en) | 2015-04-14 | 2015-04-14 | Two layers of layering perforation-zonal testing axle-linked cable-car of one-trip string and its operating method |
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