CN109653732A - Method for detecting sealing performance of lower slip packer aiming at upper return layer crossing separation test - Google Patents
Method for detecting sealing performance of lower slip packer aiming at upper return layer crossing separation test Download PDFInfo
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- CN109653732A CN109653732A CN201710943516.3A CN201710943516A CN109653732A CN 109653732 A CN109653732 A CN 109653732A CN 201710943516 A CN201710943516 A CN 201710943516A CN 109653732 A CN109653732 A CN 109653732A
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- pressure value
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 238000001612 separation test Methods 0.000 title abstract 2
- 238000012360 testing method Methods 0.000 claims abstract description 81
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010998 test method 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
- 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
-
- 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
- E21B33/12—Packers; Plugs
- E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
-
- 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
-
- 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
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a method for detecting the sealing performance of a lower slip packer aiming at an upper return layer crossing separation test, and belongs to the technical field of oil development and testing. The method for detecting the sealing performance of the lower slip packer aiming at the upper return layer straddle test comprises the steps of putting a full-drift diameter straddle test string into a well, adding a liquid column with a preset depth into an oil pipe, setting an upper support type packer and a lower slip type packer, putting a data receiver with a cable between the upper support type packer and the lower slip type packer, obtaining pressure information in the oil pipe at the lower part of the lower slip type packer by the data receiver, sending a pressure signal of the pressure information to the data receiver by the data transmitter, transmitting the pressure signal to an instrument vehicle by the data receiver to display a pressure value, comparing the pressure value with a tested layer stratum pressure value obtained before, determining the sealing performance of the lower slip type packer, and avoiding the influence on a new perforation layer test result when the tested layer is communicated with a new perforation layer.
Description
Technical field
The present invention relates to oil development Oil Test Technology fields, in particular to a kind of be directed to above returns a layer straddle test, under detection
The method of anchor packer leakproofness.
Background technique
In oil and gas well testing operation process, have perforation exposed layer for pit shaft, the well of mew layer test is returned in preparation, it is more
Using the straddle test method for beating bridge plug, cement injection sealing or tripping in twin packer tubing string isolation lower part perforation exposed layer, and for
Lower part exposed layer be high yield oil-yielding stratum when, generally use tripping in twin packer tubing string, to after the perforating test of upper layer position with lower part
The method for having penetrated layers apart co-production.
There is not effective hand that lower packet leakproofness in test string in layer straddle test is returned in verifying also in the prior art
Section.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
The means for lacking effectively detection lower packet leakproofness in test at present, it is close can not to obtain detection packer in real time
The case where envelope property, can only obtain lower packet after playing out tubing string and pressure gauge after the test is finished with tubing string tripping in pressure gauge
Leakproofness.At this point, the result of packer blow-by has generated, due to there is no foreseeability, it cannot take effectively to remedy in advance and arrange
It applies, causes to return layer test failure, not only delay the duration, have lost expense, and exacerbate in pit shaft well killing fluid to test
The pollution damage degree of layer.
Summary of the invention
In consideration of it, the present invention, which provides a kind of be directed to, above returns a layer straddle test, the method for detecting lower slips packer sealing,
In order to test the leakproofness of lower slips formula packer.
Specifically, including technical solution below:
One kind, which is directed to, above returns a layer straddle test, the method for detecting lower slips packer sealing, which comprises
By in full-bore straddle test tubing string lower going-into-well, predetermined depth is added into oil pipe in the case where testing valve closing state
Fluid column；
Setting upper support type packer and lower slips formula packer, wherein the position of the lower slips formula packer set is high
Degree is higher than the position height for having tried layer perforation, and opens the test valve；
By the data sink with cable be lowered into the upper support type packer and the lower slips formula packer it
Between, data transmitter obtains the pressure information in the oil pipe of the lower slips formula packer lower part；
The data transmitter sends the pressure signal of the pressure information into data sink；The data sink
The pressure signal is transmitted into measuring truck, measuring truck shows pressure value；
The layer strata pressure value of examination for comparing the pressure value and measuring before, determines the lower slips formula packer
Leakproofness.
Further, described by before in full-bore straddle test tubing string lower going-into-well, the method also includes: on described
Support type packer and the lower slips formula packer carry out multiple scraping in the set position of production string inner wall.
Further, the layer strata pressure value of examination for comparing the pressure value and measuring before, determine described in
The leakproofness of lower slips formula packer specifically includes: if the pressure value has tried a layer strata pressure value equal to described, really
The fixed lower slips formula packer has leakproofness；If the pressure value has tried stressor layer value described in being less than, institute is determined
Lower slips formula packer is stated without leakproofness.
Further, if the pressure value has tried a layer strata pressure value equal to described, the lower card is determined
After tile style packer has leakproofness, the method also includes: the upper support type packer and the lower slips formula are sealed
Stratum between device carries out caber, perforation, is tested.
Further, if the pressure value has tried stressor layer value less than described, the lower slips formula is determined
After packer does not have leakproofness, the method also includes: release the upper support type packer and lower slips formula envelope
Every the setting of device, and act the full-bore straddle test tubing string and the lower slips formula packer sealing is checked again for
Or full-bore straddle test tubing string described in tripping in again after the replacement lower slips formula packer.
Further, the data transmitter includes the first data transmitter and the second data transmitter, first number
The pressure information in the oil pipe of the lower slips formula packer lower part is obtained according to transmitter, and by the pressure information with pressure signal
Form be sent in second data transmitter, second data transmitter sends the pressure signal to the data
In receiver.
Further, the pressure signal is continuous real-time pressure signal.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
The embodiment of the invention provides one kind for a layer straddle test is above returned, and detects the side of lower slips packer sealing
Method, using a kind of full-bore straddle test tubing string, in full-bore straddle test tubing string lower going-into-well, in the case where testing valve closing state
The fluid column of predetermined depth is added into oil pipe, then setting upper support type packer and lower slips formula packer, unlatching test valve,
By the way that the data sink for having cable is lowered between upper support type packer and lower slips formula packer, data sink
The pressure information in the oil pipe of lower slips formula packer lower part is obtained, data transmitter sends the pressure signal of pressure information to data
In receiver, data sink transmits pressure signal into measuring truck, and measuring truck shows pressure value, compares pressure value therewith
Before the layer strata pressure value of examination that measures, can determine the leakproofness of lower slips formula packer, avoid having tried layer and new perforation
New perforation layer test result is had an impact when there is connection between layer.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is that a kind of be directed to provided in an embodiment of the present invention above returns a layer straddle test, detects lower slips packer sealing
Method step flow chart；
Fig. 2 is that the embodiment of the invention provides one kind for a layer straddle test is above returned, and detects lower slips packer sealing
Method in the structural schematic diagram of full-bore straddle test tubing string in use.
Appended drawing reference in figure respectively indicates are as follows:
1, lubricator；
2, fixed pulley；
3, production tree；
4, measuring truck；
5, surface pipe；
6, oil pipe；
7, orientation spool；
8, production string；
9, reverse circulation valve；
10, valve is tested；
11, upper support type packer；
12, data sink；
13, the second data transmitter；
14, damper；
15, screen casing；
16, igniter head；
17, layer to be tested；
18, perforating gun；
19, blind joint；
20, the first data transmitter；
21, lower slips formula packer；
22, layer has been tried；
23, pressure relief device；
24, artificial bottom of a well.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
The embodiment of the invention provides one kind for a layer straddle test is above returned, and detects the side of lower slips packer sealing
Method, method flow diagram is as shown in Figure 1, specifically include:
Step 101: by full-bore straddle test tubing string lower going-into-well, being added in the case where testing valve state into oil pipe default deep
The fluid column of degree.
For full-bore straddle test tubing string, structural schematic diagram in use is as shown in Fig. 2, include upper
Support type packer 11, lower slips formula packer 21, test valve 10, at least one data transmitter and oil pipe 6, wherein test
Valve 10, upper support type packer 11 and lower slips formula packer 21 are connected to from top to bottom on each section of oil pipe 6；Data hair
Device is sent to be arranged on the outer tube wall of oil pipe 6, and data transmitter is located at upper support type packer 11 and lower slips formula packer 21
Between.
Further, full-bore straddle test tubing string further includes damper 14, igniter head 16 and perforating gun 18, damper
14, igniter head 16 and perforating gun 18 are between upper support type packer 11 and lower slips formula packer 21, and slip-type seals instantly
When device 21 has leakproofness, the perforation for treating test layer 17 is realized in igniter head 16 and the cooperation of perforating gun 18, in damper 14
The lower protection realized to tubing string of effect.
Further, full-bore straddle test tubing string further includes data sink 12 and measuring truck 4, and data sink 12
It is connected by cable with measuring truck 4, for being believed pressure by cable after the pressure signal for receiving data transmitter transmission
Number measuring truck 4 is transferred to be shown.
Further, data transmitter includes the first data transmitter 20 and the second data transmitter 13, the first data hair
Device 20 is sent to obtain the pressure information in 21 lower part oil pipe 6 of lower slips formula packer, and by pressure information in the form of pressure signal
It is sent in the second data transmitter 13, the second data transmitter 13 sends pressure signal into data sink 12.
Further, full-bore straddle test tubing string further includes orientation spool 7, for positioning to tubing string.
Further, full-bore straddle test tubing string further includes reverse circulation valve 9, for determining lower slips formula packer 21
Caber, perforation are carried out to the stratum between upper support type packer 11 and lower slips formula packer 21 with leakproofness, surveyed
After examination, pressurized progress reacting cycle of opening washes kill-job.
Further, full-bore straddle test tubing string further includes screen casing 15, after 17 perforating rifle 18 of layer to be tested is penetrated out,
The liquid flowed out from layer 17 to be tested can enter in oil pipe 6 from screen casing 15.
Further, full-bore straddle test tubing string further includes blind joint 19, for the tool of about 6 oil pipe to be separated
It opens, so that the pressure data monitored is the pressure of lower slips formula packer or less position.
Further, full-bore straddle test tubing string further includes pressure relief device 23, the pressure for releasing in oil pipe 6.
It should be noted that full-bore straddle test tubing string is located among production string 8, and it is fixed on artificial bottom of a well 24
The predeterminated position in portion, as shown in Figure 1, being additionally provided with surface pipe 5 in the outside of production string 8 on the top of well head；At well head
It is provided with production tree 3, lubricator 1 is communicated in the middle part of production tree, fixed pulley 2 is equipped in the side of lubricator, utilizes fixed pulley 2
Cable can be mentioned.
After setting full-bore straddle test tubing string, before this step, needs first to treat testing well and carry out kill-job simultaneously
Drifting fills ball-and-seat on kill manifold, fills throttle valve on choke manifold, treats testing well with the well killing fluid of proper density and carries out
Circulation washes kill-job, controls and ensures to export discharge capacity and import discharge capacity keeps balancing.
After well testing kill-job to be measured is qualified, production tree 3 is torn open, preventer is installed, then tripping in oil pipe tail band gauguste cutter is to artificial
Shaft bottom 24.It when acting gauguste cutter, checks whether gauguste cutter deforms, if gauguste cutter has no obvious deformation, enters lower step process；If
Gauguste cutter has deformation to be then described in detail and analyze reason, is rectified and improved.
Secondly, scraping production string 8, tripping in oil pipe tail band casing scraper to artificial bottom of a well 24 are insulated in upper brace type
Device 11 and lower slips formula packer 21 8 inner wall of production string set position repeatedly scraping three times, scraping pipe in the well that recurs out
Column.
It should be noted that test valve 10 is that APR tests valve, and during going into the well, work of the test valve 10 in supplement piston
It is in close state always under.When the fluid column of predetermined depth is added, fluid column can rest on the top of test valve 10.
Step 102: setting upper support type packer and lower slips formula packer, the wherein position of lower slips formula packer set
It sets height and is higher than the position height for having tried layer perforation, and open test valve.
Specifically, by lifting from the top and puting down tool string, setting upper support type packer 11 and lower slips formula packer 21, so that
Position height in lower slips formula packer 21 envelope of seat is higher than the position height for having tried layer perforation, it is ensured that having tried layer will not be to upper
The test for returning layer impacts.
Meanwhile after upper support type packer 11 and lower slips formula packer 21 are setting, by applying into oil jacket annulus
Preset pressure realizes the unlatching to test valve 10.
Step 103: by the data sink with cable be lowered into upper support type packer and lower slips formula packer it
Between, data transmitter obtains the pressure information in the oil pipe of lower slips formula packer lower part.
Specifically, data transmitter includes the first data transmitter 20 and the second data transmitter 13, and the first data are sent
Device 20 obtains the pressure information in 21 lower part oil pipe 6 of lower slips formula packer.
Step 104: data transmitter sends the pressure signal of pressure information into data sink；Data sink transmission
For pressure signal into measuring truck, measuring truck shows pressure value.
Specifically, the first data transmitter 20 sends pressure information to the second data transmitter in the form of pressure signal
In 13, the second data transmitter 13 sends pressure signal into data sink 12, and data sink 12 transmits pressure signal and arrives
In measuring truck 4, measuring truck 4 shows pressure value.
It should be noted that the pressure signal that the second data transmitter 13 is sent is continuous real-time pressure signal.
Step 105: the layer strata pressure value of examination for comparing pressure value and measuring before determines lower slips formula packer
Leakproofness.
Specifically, if pressure value, which is equal to, has tried 22 strata pressure value of layer, determine that lower slips formula packer 21 has
Leakproofness；If pressure value, which is less than, has tried 22 pressure value of layer, and close to head of liquid, it is determined that lower slips formula packer 21
Without leakproofness.
When pressure value, which is equal to, has tried 22 strata pressure value of layer, upper support type packer 11 and lower slips formula are insulated
Stratum between device 21 carries out caber, perforation, carries out returning layer test；When pressure value, which is less than, has tried 22 pressure value of layer,
By discharging closing of the preset pressure realization to test valve 10 into oil jacket annulus, and release upper support type packer 11 and lower card
Tile style packer 21 it is setting, take out the full-bore straddle test tubing string.
The embodiment of the invention provides one kind for a layer straddle test is above returned, and detects the side of lower slips packer sealing
Method, using a kind of full-bore straddle test tubing string, in full-bore straddle test tubing string lower going-into-well, in test 10 closed state of valve
The lower fluid column that predetermined depth is added into oil pipe 6, then setting upper support type packer 11 and lower slips formula packer 21, open
Valve 10 is tested, by the way that the data sink 12 for having cable is lowered into upper support type packer 11 and lower slips formula packer 21
Between, data sink 12 obtains the pressure information in 21 lower part oil pipe 6 of lower slips formula packer, and data transmitter sends pressure
The pressure signal of information is into data sink 12, and data sink 12 transmits pressure signal into measuring truck 4, and measuring truck 4 is aobvious
Show pressure value, the 22 strata pressure value of the layer of examination for comparing pressure value and measuring before can determine that lower slips formula insulates
The leakproofness of device 21 avoids having tried to have an impact new perforation layer test result when existing and be connected between layer 22 and new perforation layer.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (7)
1. one kind, which is directed to, above returns a layer straddle test, the method for detecting lower slips packer sealing, which is characterized in that the method
Include:
By in full-bore straddle test tubing string lower going-into-well, the liquid of predetermined depth is added into oil pipe in the case where testing valve closing state
Column；
Setting upper support type packer and lower slips formula packer, wherein the position height of the lower slips formula packer set is high
In having tried the position height of layer perforation, and open the test valve；
Data sink with cable is lowered between the upper support type packer and the lower slips formula packer, number
The pressure information in the oil pipe of the lower slips formula packer lower part is obtained according to transmitter；
The data transmitter sends the pressure signal of the pressure information into data sink；The data sink transmission
For the pressure signal into measuring truck, measuring truck shows pressure value；
The layer strata pressure value of examination for comparing the pressure value and measuring before, determines the close of the lower slips formula packer
Feng Xing.
2. according to claim 1 for a layer straddle test is above returned, the method for detecting lower slips packer sealing is special
Sign is, described by before in full-bore straddle test tubing string lower going-into-well, the method also includes: the upper brace type is insulated
Device and the lower slips formula packer carry out multiple scraping in the set position of production string inner wall.
3. according to claim 1 for a layer straddle test is above returned, the method for detecting lower slips packer sealing is special
Sign is that the layer strata pressure value of examination for comparing the pressure value and measuring before determines the lower slips formula envelope
It is specifically included every the leakproofness of device: if the pressure value has tried a layer strata pressure value equal to described, determining the lower card
Tile style packer has leakproofness；If the pressure value has tried stressor layer value described in being less than, the lower slips formula is determined
Packer does not have leakproofness.
4. according to claim 3 for a layer straddle test is above returned, the method for detecting lower slips packer sealing is special
Sign is, if the pressure value has tried a layer strata pressure value equal to described, determines the lower slips formula packer
After leakproofness, the method also includes: between the upper support type packer and the lower slips formula packer
Stratum carries out caber, perforation, is tested.
5. according to claim 3 for a layer straddle test is above returned, the method for detecting lower slips packer sealing is special
Sign is, if the pressure value has tried stressor layer value less than described, determines that the lower slips formula packer does not have
After having leakproofness, the method also includes: the setting of the upper support type packer and the lower slips formula packer is released,
And rise the full-bore straddle test tubing string lower slips formula packer sealing is checked again for or is replaced it is described
Again full-bore straddle test tubing string described in tripping in after lower slips formula packer.
6. according to claim 1 for a layer straddle test is above returned, the method for detecting lower slips packer sealing is special
Sign is that the data transmitter includes the first data transmitter and the second data transmitter, and first data transmitter obtains
The pressure information in the oil pipe of the lower slips formula packer lower part is taken, and the pressure information is sent in the form of pressure signal
Into second data transmitter, second data transmitter sends the pressure signal into the data sink.
7. according to claim 1 for a layer straddle test is above returned, the method for detecting lower slips packer sealing is special
Sign is that the pressure signal is continuous real-time pressure signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943516.3A CN109653732A (en) | 2017-10-11 | 2017-10-11 | Method for detecting sealing performance of lower slip packer aiming at upper return layer crossing separation test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710943516.3A CN109653732A (en) | 2017-10-11 | 2017-10-11 | Method for detecting sealing performance of lower slip packer aiming at upper return layer crossing separation test |
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| CN109653732A true CN109653732A (en) | 2019-04-19 |
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