CN107100587A - For the channeling test of cement sheath in Petroleum Production, water blockoff, test inside back cover unification process pipe string - Google Patents
For the channeling test of cement sheath in Petroleum Production, water blockoff, test inside back cover unification process pipe string Download PDFInfo
- Publication number
- CN107100587A CN107100587A CN201710403907.6A CN201710403907A CN107100587A CN 107100587 A CN107100587 A CN 107100587A CN 201710403907 A CN201710403907 A CN 201710403907A CN 107100587 A CN107100587 A CN 107100587A
- Authority
- CN
- China
- Prior art keywords
- conversion
- sleeve
- test
- central tube
- water blockoff
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000004568 cement Substances 0.000 title claims abstract description 20
- 230000005465 channeling Effects 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000003208 petroleum Substances 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000003245 working effect Effects 0.000 abstract description 3
- 239000011229 interlayer Substances 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/10—Locating fluid leaks, intrusions or movements
- E21B47/117—Detecting leaks, e.g. from tubing, by pressure testing
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Pipe Accessories (AREA)
Abstract
The invention belongs in DP technology apparatus field, more particularly to a kind of channeling test of cement sheath being used in Petroleum Production, water blockoff, test inside back cover unification process pipe string, including packer, conversion equipment, give up and water blockoff bridging plug, four from top to bottom pass sequentially through oil pipe series connection.Conversion equipment, including top connection, central tube, spring, ball, conversion sleeve, control sliding sleeve, valve element, valve seat, conversion connector, gag lever post and lower contact, top connection is fixedly connected on the upper end of central tube, conversion connector is fixedly connected on the lower end of central tube, spring, valve element and valve seat are enclosed on the outside of central tube, valve seat is threadedly attached in the upper end of conversion connector, and described lower contact is fixedly connected on the lower end of conversion connector.Three independently workings that process pipe string of the present invention can make channeling test of cement sheath, water blockoff, test inside back cover kind technique are changed into one-stop operation, substantially reduce construction period, reduce construction cost, reduce environmental pollution, reduce difficulty of construction.
Description
Technical field
The invention belongs to DP technology apparatus field, more particularly to a kind of channeling test of cement sheath being used in Petroleum Production, water blockoff, test envelope
Three-in-one process pipe string.
Background technology
In oil field development production process, oil machinery water blockoff refers to a kind of technical measures that output water is controlled in oil well.
The output water of oil well is essentially from Bian Shui, bottom water and injection water.These water are to invade oil well along high permeability zone (or crack).It is right
These high permeability zones (or crack) are blocked, and can improve the sweep efficiency of water, so as to improve oil recovery factor.Current oil well
Tubing string construction procedure in water pack off measure, mainly by channeling test of cement sheath, water blockoff, tests the six times tubing strings completions of inside back cover kind technique.Construction
Cycle is long, and cost is high, and environment easily causes pollution.Simplify construction technology difficulty larger.
The content of the invention
The present invention provides a kind of channeling test of cement sheath being used in Petroleum Production, water blockoff, tests inside back cover unification process pipe string, above-mentioned to solve
The problem of being proposed in background technology.
Technical problem solved by the invention is realized using following technical scheme：The present invention provides a kind of for Oil Generation
Channeling test of cement sheath, water blockoff in production, test inside back cover unification process pipe string, including packer, conversion equipment, give up and water blockoff bridging plug, four by
Oil pipe series connection is up to passed sequentially through down.
Conversion equipment, including top connection, central tube, spring, ball, conversion sleeve, control sliding sleeve, valve element, valve seat, conversion connection
Body, gag lever post and lower contact, top connection are fixedly connected on the upper end of central tube, and conversion connector is fixedly connected under central tube
End, spring, valve element and valve seat are enclosed on the outside of central tube, and valve seat is threadedly attached in the upper end of conversion connector, described
Lower contact be fixedly connected on the lower end of conversion connector, be provided with axially disposed slideway on the outside of described conversion sleeve,
Spacer pin is correspondingly arranged on described central tube with described slideway, the end of spacer pin is inserted in described slideway so as to right
The axial stroke of conversion sleeve is limited, and described control sliding sleeve is fixed by the control sliding sleeve pin being arranged on conversion sleeve to be connected
It is connected on the inner side of conversion sleeve, conversion sleeve and is provided with closing piece, closing piece is arranged in the through hole on the wall of conversion sleeve side, and can be inside and outside
Moved radially under the promotion of side part, described ball is placed on the upper end of control sliding sleeve, and described gag lever post is by being fixed on
Control pin on control sliding sleeve is connected to the inner side of control sliding sleeve, and the lower end of described conversion sleeve is provided with snap, and snap passes through
Snap fixed cover is fixed, and the lower end of described gag lever post is provided with the annular groove matched with described snap, described central tube,
It is provided with conversion sleeve and control sliding sleeve in liquid pass hole, described conversion connector and was provided with liquid passage, is crossed in liquid passage
It is provided with check valve.
Preferably, it is provided with valve seat sheath on the outside of described valve seat.
Preferably, regulation ring is provided between described top connection and spring, regulation ring is enclosed on the outside of central tube, adjusted
The upper end of ring is threadedly attached in top connection.
Beneficial effects of the present invention are：The present invention is improved existing process, especially R ＆ D design converting means
Put, control conversion equipment to act by being suppressed into oil pipe and oil jacket space, process pipe string of the present invention can be made successively
Channeling test of cement sheath, water blockoff, the process conditions tested needed for envelope are met, so as to obtain channeling test of cement sheath, water blockoff, test three independently workings change of inside back cover kind technique
For one-stop operation, six times working string is changed into working string twice, substantially reduces construction period, reduces construction cost, subtracts
Lack environmental pollution, reduce difficulty of construction.
Brief description of the drawings
Fig. 1 is the structural representation of conversion equipment in the present invention；
Fig. 2 is the overall structure diagram of the present invention；
Fig. 3 is the partial enlarged drawing of the core controlling organization of the present invention.
In figure：In figure：1- top connections, 2- central tubes, 3- regulation rings, 4- springs, 5- balls, 6- conversion sleeves, 7- control sliding sleeves,
8- valve elements, 9- spacer pins, 10- control pins, 11- valve seat sheaths, 12- valve seats, 13- conversion connectors, 14- gag lever posts, 15- locks
Block, 16- control sliding sleeve pins, 17- check valves, 18- lower contacts, 19- snap fixed covers, 20- snaps, 21- annular grooves, 22- crosses liquid
Passage, 23- liquid pass holes, 24- water blockoff bridging plugs, 25- gives up, 26- conversion equipments, 27- packers.
Embodiment
The present invention is described further below in conjunction with accompanying drawing：
The present embodiment includes packer 27, conversion equipment 26, give up 25 and water blockoff bridging plug 24, and four from top to bottom lead to successively
Cross oil pipe series connection.
Conversion equipment 26, including top connection 1, central tube 2, spring 4, ball 5, conversion sleeve 6, control sliding sleeve 7, valve element 8, valve seat
12nd, conversion connector 13, gag lever post 14 and lower contact 18.
Top connection 1 is fixedly connected on the upper end of central tube 2, and conversion connector 13 is fixedly connected on the lower end of central tube 2, bullet
Spring 4, valve element 8 and valve seat 12 are enclosed on the outside of central tube 2, and valve seat 12 is threadedly attached in the upper end of conversion connector 13,
Described lower contact 18 is fixedly connected on the lower end of conversion connector 13, and valve element 8 and valve seat 12 constitute a switch valve, valve element 8
Cooperated with the conical surface on valve seat 12 and realize the closing of the switch valve.
The outside of described conversion sleeve 6 is provided with axially disposed slideway, described central tube 2 and described slideway
Spacer pin 9 is correspondingly arranged on, the end of spacer pin 9 is inserted in described slideway so as to which the axial stroke to conversion sleeve 6 is limited
System.
Described control sliding sleeve 7 is fixedly connected on conversion sleeve 6 by the control sliding sleeve pin 16 being arranged on conversion sleeve 6
Inner side.
It is provided with closing piece 15 on conversion sleeve 6, closing piece 15 is arranged in the through hole on the side wall of conversion sleeve 6, and can outside inside
The promotion lower edge of part is radially slided.
Described ball 5 is placed on the upper end of control sliding sleeve 7, and described gag lever post 14 is by being fixed on control sliding sleeve 7
Control pin 10 is connected to the inner side of control sliding sleeve 7.
The lower end of described conversion sleeve 6 is provided with snap 20, and snap 20 is fixed by snap fixed cover 19, and described is spacing
The lower end of bar 14 is provided with the annular groove 21 matched with described snap 20.
Liquid pass hole 23, described conversion connector 13 are provided with described central tube 2, conversion sleeve 6 and control sliding sleeve 7
Liquid passage 22 was inside provided with, crosses in liquid passage 22 and is provided with check valve 17.
The outside of described valve seat 12 is provided with valve seat sheath 11, by the clearance control between valve seat sheath 11 and valve element 8
In zone of reasonableness, can be prevented effectively from causes the problem of valve element 8 is not closed completely because the sandstone of underground blocks valve element 8.
Regulation ring 3 is provided between described top connection 1 and spring 4, regulation ring 3 is enclosed on the outside of central tube 2, regulation ring
3 upper end is threadedly attached in top connection 1.The cracking pressure of valve element 8 can be adjusted by regulation ring 3, so as to essence
Really adapt to underground working and the applying working condition of other downhole tools.
The course of work of the present invention is as follows：
1st, during channeling test of cement sheath：
During channeling test of cement sheath, packer 27 is worked by hydraulic pressure, suppressed from ground oil conduit, pressure is by conversion equipment 26
Heart pipe 2, control sliding sleeve 7, the liquid pass hole 23 on conversion sleeve 6 boost valve element 8, and liquid passes through valve element 8 and valve seat under pressure
Between 12, enter well section of the packer below 27 through casing annulus, on ground, staff just may be used according to the change of well head pressure
Determine whether to go here and there layer at water blockoff interlayer, find and do not go here and there interlayer, so as to complete channeling test of cement sheath technique.
2nd, during water blockoff：
During water blockoff, worked by water blockoff bridging plug 24, adjustment water blockoff bridging plug 24 is beaten to interlayer is not gone here and there after casting ball 5 from ground
Pressure, ball 5 is sitting on control sliding sleeve 7 and blocks the upper end for controlling sliding sleeve 7, and ball 5 and control sliding sleeve 7 are descending same under pressure
When cut control sliding sleeve pin 16, control sliding sleeve 7, which is gone downwards at reducing, makes the laterally outward displacement of closing piece 15, and control sliding sleeve 7 pushes away lock
Block 15 drives conversion sleeve 6 to go downwards in conversion connector 13 at reducing, and closing piece 15 is moved on to lateral out in the case where control sliding sleeve 7 is promoted
Change in connector 13 at reducing, ball 5 promote control sliding sleeve 7 and control pin 10, gag lever post 14 drive closing piece 15, conversion sleeve 6 after
It is continuous to come downwards to upper end at the overcoat reducing of conversion sleeve 6 and collided with spacer pin 9, now between the closing valve element 8 of conversion sleeve 6 and valve seat 12
Passage, opens conversion equipment 26 with lower channel, ground continues to suppress, and the liquid pass hole 23 on the converted set 6 of pressure passes through the company of conversion
In junctor 13 at reducing, water blockoff bridging plug 24 is delivered to, water blockoff bridging plug 24 is worked, water-plugging technology is completed.
After the completion of water-plugging technology, 25 releases that make to give up are suppressed by ground, and (i.e. tubing string breaks as up and down two at 25 from giving up
Section).
When the 3rd, testing envelope：
When testing envelope, envelope conversion equipment pipe internal channel is tested by closing channeling test of cement sheath water blockoff, is reopened between valve element 8 and valve seat 12
Passage, to verify the closure interlayer work of water blockoff bridging plug 24, collar piping suppresses, and pressure acts on gag lever post 14, snap and fixed
On set 19, snap fixed cover 19 is connected with conversion sleeve 6, and gag lever post 14, the control sliding sleeve 7 of snap fixed cover 19 drive with conversion sleeve 6
Control sliding sleeve 7, ball 5 simultaneously up, collided to lower end at the overcoat reducing of conversion sleeve 6 with spacer pin 9, now conversion sleeve 6 opens valve
Passage between core 8 and valve seat 12, gag lever post 14 continues up in control lower band control sliding sleeve 7, the ball 5 of control pin 10, controls
Sliding sleeve 7, which is up at reducing, makes closing piece 15 laterally inwardly move, relatively motionless to conversion sleeve 6 and control sliding sleeve 7, in pressure effect
It is about to ball 5 on the cutting control pin 10 of lower limit bar 14 to be lifted off controlling in sliding sleeve 7,14 times end slots of gag lever post and snap fixed cover 19
Snap 20 is locked, and is closed channeling test of cement sheath water blockoff and is tested envelope conversion equipment with lower channel, pressure is by ball 5 and the annular space, the conversion that control sliding sleeve 7
Liquid pass hole 23 on set 6, starts the casing annulus that the passage between valve element 8 and valve seat 12 enters outside conversion equipment 26, this
When packer 27 worked, pressure is acted between packer 27 and water blockoff bridging plug 24, observation pressure change checking water blockoff bridging plug
Envelope technique is tested in 24 working conditions and blocking layer closure situation, completion.
The present invention is improved existing process, especially R ＆ D design conversion equipment 26, by oil pipe and oil
Set is suppressed to control conversion equipment 26 to act in space, and process pipe string of the present invention can be made to meet channeling test of cement sheath, water blockoff successively, test
Process conditions needed for envelope, thus channeling test of cement sheath, water blockoff, three independently workings testing inside back cover kind technique are changed into one-stop operation, six times
Working string is changed into working string twice, substantially reduces construction period, reduces construction cost, reduces environmental pollution, drop
Low difficulty of construction.
Claims (3)
1. it is a kind of be used for Petroleum Production in channeling test of cement sheath, water blockoff, test inside back cover unification process pipe string, it is characterised in that：Including packer
(27), conversion equipment (26), give up (25) and water blockoff bridging plug (24), four from top to bottom pass sequentially through oil pipe series connection；
Conversion equipment (26), including top connection (1), central tube (2), spring (4), ball (5), conversion sleeve (6), control sliding sleeve (7),
Valve element (8), valve seat (12), conversion connector (13), gag lever post (14) and lower contact (18), during top connection (1) is fixedly connected on
The upper end of heart pipe (2), conversion connector (13) is fixedly connected on the lower end of central tube (2), spring (4), valve element (8) and valve seat
(12) be enclosed on the outside of central tube (2), valve seat (12) is threadedly attached in the upper end of conversion connector (13), it is described under
Joint (18) is fixedly connected on the lower end of conversion connector (13), is provided with the outside of described conversion sleeve (6) axially disposed
Slideway, be correspondingly arranged on spacer pin (9) with described slideway on described central tube (2), the end of spacer pin (9) is inserted in institute
So as to which the axial stroke to conversion sleeve (6) is limited in the slideway stated, described control sliding sleeve (7) is by being arranged on conversion sleeve
(6) the control sliding sleeve pin (16) on is fixedly connected on the inner side of conversion sleeve (6), conversion sleeve (6) and is provided with closing piece (15), lock
Block (15) be arranged on conversion sleeve (6) side wall on through hole in, and can inside outside part promotion lower edge radially slide, it is described
Ball (5) is placed on the upper end of control sliding sleeve (7), and described gag lever post (14) is by being fixed on the control pin controlled on sliding sleeve (7)
(10) inner side of control sliding sleeve (7) is connected to, the lower end of described conversion sleeve (6) is provided with snap (20), and snap (20) passes through
Snap fixed cover (19) is fixed, and the lower end of described gag lever post (14) is provided with the annular groove matched with described snap (20)
(21) liquid pass hole (23), is provided with described central tube (2), conversion sleeve (6) and control sliding sleeve (7), described conversion connects
Liquid passage (22) was provided with junctor (13), crosses in liquid passage (22) and is provided with check valve (17).
2. it is according to claim 1 it is a kind of be used for Petroleum Production in channeling test of cement sheath, water blockoff, test inside back cover unification process pipe string, its
It is characterised by：Valve seat sheath (11) is provided with the outside of described valve seat (12).
3. it is according to claim 1 it is a kind of be used for Petroleum Production in channeling test of cement sheath, water blockoff, test inside back cover unification process pipe string, its
It is characterised by：Regulation ring (3) is provided between described top connection (1) and spring (4), regulation ring (3) is enclosed on central tube (2)
Outside, the upper end of regulation ring (3) is threadedly attached in top connection (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403907.6A CN107100587B (en) | 2017-06-01 | 2017-06-01 | Three-in-one process pipe column for string inspection, water plugging and seal inspection in petroleum production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403907.6A CN107100587B (en) | 2017-06-01 | 2017-06-01 | Three-in-one process pipe column for string inspection, water plugging and seal inspection in petroleum production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107100587A true CN107100587A (en) | 2017-08-29 |
| CN107100587B CN107100587B (en) | 2023-02-07 |
Family
ID=59659985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710403907.6A Active CN107100587B (en) | 2017-06-01 | 2017-06-01 | Three-in-one process pipe column for string inspection, water plugging and seal inspection in petroleum production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107100587B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943164A (en) * | 2021-03-17 | 2021-06-11 | 大庆市天德忠石油科技有限公司 | String-testing, water-plugging and seal-testing process pipe column |
| CN112983331A (en) * | 2021-03-24 | 2021-06-18 | 大庆市天德忠石油科技有限公司 | Hydraulic double-gate plate well plugging device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943164A (en) * | 2021-03-17 | 2021-06-11 | 大庆市天德忠石油科技有限公司 | String-testing, water-plugging and seal-testing process pipe column |
| CN112943164B (en) * | 2021-03-17 | 2021-10-15 | 大庆市天德忠石油科技有限公司 | String-testing, water-plugging and seal-testing process pipe column |
| CN112983331A (en) * | 2021-03-24 | 2021-06-18 | 大庆市天德忠石油科技有限公司 | Hydraulic double-gate plate well plugging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107100587B (en) | 2023-02-07 |
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