CN108303222A - It tests envelope test equipment and tests envelope test method - Google Patents
It tests envelope test equipment and tests envelope test method Download PDFInfo
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- CN108303222A CN108303222A CN201710026448.4A CN201710026448A CN108303222A CN 108303222 A CN108303222 A CN 108303222A CN 201710026448 A CN201710026448 A CN 201710026448A CN 108303222 A CN108303222 A CN 108303222A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
Envelope test equipment is tested the invention discloses one kind and tests envelope test method, including instrument body, and instrument body is equipped with mutually isolated first sensor and second sensor；Be formed with the first pressure transmission channel being connected to the tube passage that oils in instrument body, the tube passage that oils, water distribution seating nipple lower layer's waterflood path be connected to lower oil pipe interchannel, first sensor is set in the first pressure transmission channel, the pressure for measuring the first pressure transmission channel；The second pressure transmission channel being connected to the upper layer waterflood path of water distribution seating nipple is formed in instrument body, second sensor is set in the second pressure transmission channel to measure the pressure in the second pressure transmission channel；The first sealing and the second sealing are formed on instrument body, the first sealing is for separating oil tube passage and upper layer waterflood path, and the second sealing is for separating upper layer waterflood path and lower layer's waterflood path.Technical solution provided by the invention can carry out the casing protective packer and separate injection packer of the concentric water injection string of integrated form to test envelope test.
Description
Technical field
Envelope test equipment is tested the present embodiments relate to oil field development technical field more particularly to one kind and tests envelope test side
Method.
Background technology
In oil field development, the development scheme of seperated layer water injection becomes one of the important measures of oilfield stable production and volume increase, for
Ultradeep well and horizontal well, generally use integrated form concentric layers water injection string, wherein integrated form concentric layers water injection string is logical
Packer setting is crossed in well inner sleeve, the oil pipe of concentric layers water injection string would generally connect water distribution seating nipple, and one is matched
Water seating nipple is connected between two sections of oil pipes (upper oil pipe and lower oil pipe), by launched into its water distribution seating nipple water filling fuse into
Row allotment layered waterflooding quantity.The packer of integrated form concentric layers water injection string generally comprises casing protective packer and dispensing is sealed
Set gradually casing protective packer and separate injection packer every device, on from well head to the direction in shaft bottom, casing protective packer with
There is default spacing between separate injection packer.In general, a water distribution seating nipple includes two waterflood paths：Upper layer waterflood path
With lower layer's waterflood path, upper layer waterflood path is connected to the stratum between casing protective packer and separate injection packer, lower layer's note
Aquaporin is connected to separate injection packer stratum below by lower oil pipe；Can be by water filling in upward oil pipe, and pass through and match water conservancy project
Make the upper layer waterflood path of cylinder and lower layer's waterflood path realizes two layers of dispensing；Due to the packing of integrated form concentric layers water injection string
Device sets the effect for whether tightly directly influencing seperated layer water injection in well, therefore needs to test packer before seperated layer water injection
Envelope test.
Currently, using well testing indicative curve method, institute to the envelope mode of testing of the packer of integrated form concentric layers water injection string
Meaning well testing indicative curve method is obtained mainly by being suppressed to the top annular space section water filling of casing protective packer by well testing
The water suction indicative curve of annular space section, and then the leakproofness of casing protective packer can be analyzed and determined out according to tracing pattern.
However, since separate injection packer is arranged in the lower section of casing protective packer, well testing indicative curve method only can be right
The leakproofness of the casing protective packer contacted with annular space section is tested, and separate injection packer is not in direct contact with annular space, therefore,
Well testing indicative curve method can not be used to carry out testing envelope test to separate injection packer.
Invention content
The present invention provides one kind and testing envelope test equipment and test envelope test method, in the prior art above-mentioned scarce to solve
It falls into, the casing protective packer and separate injection packer of integrated form concentric layers water injection string can be carried out to test envelope test, and energy
Envelope test period is tested in reduction, improves working efficiency.
One aspect of the present invention provides one kind and testing envelope test equipment, including：Instrument sheet for being inserted into water distribution seating nipple
Body, the instrument body are equipped with mutually isolated first sensor and second sensor；
The first pressure transmission channel for being connected to the tube passage that oils is formed in the instrument body, the upper oil pipe is logical
It is interconnected between road, lower layer's waterflood path of water distribution seating nipple and lower oil pipe channel, the first sensor is set to described
In first pressure transmission channel, for measuring the pressure in first pressure transmission channel；
The second pressure transmission channel being connected to for the upper layer waterflood path with water distribution seating nipple is formed in the instrument body,
The second sensor is set in second pressure transmission channel, for measuring the pressure in second pressure transmission channel；
The first sealing and the second sealing are formed on the instrument body, first sealing is described for separating
Oil tube passage and the upper layer waterflood path, and second sealing is for separating the upper layer waterflood path and the lower layer
Waterflood path.
Further, inlet opening and fluid hole are offered on the instrument body, and connection is additionally provided in the instrument body
The flow-guiding channel of the inlet opening and the fluid hole, the flow-guiding channel pass through the inlet opening and lower layer's waterflood path
Connection, the flow-guiding channel are connected to by the fluid hole with the lower oil pipe channel.
Further, be also formed with third sealing on the instrument body, the third sealing position in it is described into
Between fluid apertures and the fluid hole, for blocking the gap between the instrument body lateral wall and water distribution seating nipple.
Further, the top of the instrument body is equipped with attachment cap, and the attachment cap is used to connect with steel wire for logging, with
Make it is described test envelope test equipment and pass through the steel wire for logging above carry or transfer in well.
Further, first sealing, second sealing and the third sealing be set to it is described
O-ring seals on instrument body.
Further, the instrument body is equipped in the axial direction to the limiting section of instrument body limit.
Further, the limiting section is described to extend outwardly the step to be formed from the lateral wall of the instrument body
Step is for setting up the water distribution seating nipple.
Another aspect of the present invention provides one kind and testing envelope test method, and envelope test equipment pair is tested using any one of them as above
The packer of integrated form concentric layers water injection string carries out testing envelope test, and this method includes：
The envelope test equipment of testing is transferred into the water distribution seating nipple of the integrated form concentric layers water injection string to pre-
If position；
Into the tube passage that oils of the integrated form concentric layers water injection string, water filling is suppressed, and obtains the first sensor
The second pressure value that the first pressure value of measurement and the second sensor measure；
If the second pressure value changes with the variation of the first pressure value, it is determined that the integrated form concentric layers
The separate injection packer of water injection string is poorly sealed；If the second pressure value does not change with the variation of the first pressure value,
Then determine that the separate injection packer sealing of the integrated form concentric layers water injection string is tight；
Stop the water filling into the tube passage that oils to suppress；
Into well inner sleeve and the tube passage that oils, water filling is suppressed simultaneously, obtains the third that the first sensor measures
The 4th pressure value that pressure value and the second sensor measure；
If the 4th pressure value changes with the variation of the third pressure value, it is determined that the integrated form concentric layers
The casing protective packer of water injection string is poorly sealed, if the 4th pressure value does not become with the variation of the third pressure value
Change, it is determined that the casing protective packer sealing of the integrated form concentric layers water injection string is tight；
Stop the water filling into the well inner sleeve and the tube passage that oils to suppress.
Further, the method further includes：
When water filling is suppressed into the tube passage that oils of the integrated form concentric layers water injection string, the first well head pressure is obtained
Power；
When water filling is suppressed into the oil pipe for stopping, the second well head pressure is obtained；
The first difference of first well head pressure and second well head pressure is calculated, and calculates the first pressure
Second difference of value and the second pressure value；
Second difference divided by first difference are obtained into the first ratio, wherein described in first ratio is used as
The precision value of separate injection packer；
If first ratio is more than 85%, it is determined that the precision of the separate injection packer is tight；If described
One ratio is between 80% to 85%, it is determined that the precision of the separate injection packer is micro- oozes；If first ratio exists
Between 65% to 85%, it is determined that the precision of the separate injection packer is small oozes；If first ratio 50% to
Between 65%, it is determined that the precision of the separate injection packer is leakage；If first ratio between 40% to 50%,
Then determine that the precision of the separate injection packer is leakage；If first ratio is less than 40%, it is determined that the dispensing envelope
It is obviously to miss every the precision of device.
Further, the method further includes：
When water filling is suppressed into well inner sleeve and the oil pipe simultaneously, third well head pressure is obtained；
When water filling is suppressed into the well inner sleeve and the oil pipe for stopping, the 4th well head pressure is obtained；
The third difference of the third well head pressure and the 4th well head pressure is calculated, and calculates the third pressure
4th difference of value and the 4th pressure value；
4th difference divided by the third difference are obtained into the second ratio, wherein described in second ratio is used as
The precision value of casing protective packer；
If second ratio is more than 85%, it is determined that the precision of described sleeve pipe protecting packer is tight；If institute
The second ratio is stated between 80% to 85%, it is determined that the precision of described sleeve pipe protecting packer is micro- oozes；If described
Two ratios are between 65% to 85%, it is determined that the precision of described sleeve pipe protecting packer is small oozes；If second ratio
Value is between 50% to 65%, it is determined that the precision of described sleeve pipe protecting packer is leakage；If second ratio exists
Between 40% to 50%, it is determined that the precision of described sleeve pipe protecting packer is leakage；If second ratio is less than
When 40%, it is determined that the precision of described sleeve pipe protecting packer is apparent leakage.
It is provided by the invention to test envelope test equipment and test envelope test method, by the way that envelope test equipment tripping in will be tested to integrated form
In the water distribution seating nipple of concentric layers water injection string, to the separate injection packer and casing protection of integrated form concentric layers water injection string
Packer carries out testing envelope test, can be to integrated form concentric layers water injection string when needing to carry out testing envelope to separate injection packer
Water filling is suppressed in oil pipe, and it is first pressure value to measure the strata pressure under separate injection packer by first sensor, and second passes
It is second pressure value that sensor, which measures the value formation pressure between casing protective packer and separate injection packer, and comparative analysis second is pressed
Force value and first pressure value can determine that separate injection packer seals if second pressure value changes with the variation of first pressure value
It is not tight, conversely, then can determine that separate injection packer sealing is tight；When needing to carry out testing envelope to casing protective packer, while to
Water filling is suppressed in well inner sleeve and oil pipe, and the water injection pressure to oil in tube passage, i.e. casing protection are measured by first sensor
The pressure in annular space section above packer is third pressure value, and second sensor measures casing protective packer and separated-injection packing
Value formation pressure between device is the 4th pressure value, comparative analysis third pressure value and the 4th pressure value, if the 4th pressure value with
The variation of third pressure value and change, then can determine that casing protective packer is poorly sealed, conversely, then can determine casing protection seal
It is tight every device sealing.The present invention can be realized to casing protective packer and the test of being sealed property of separate injection packer, and test envelope
Test period is small, and working efficiency is higher.
Description of the drawings
Fig. 1 is the structural schematic diagram for testing envelope test equipment that one embodiment of the invention provides；
The part-structure schematic diagram for testing envelope test equipment that Fig. 2 is Fig. 1；
Fig. 3 is that testing in envelope test equipment tripping in the water distribution seating nipple of integrated form concentric layers water injection string for Fig. 1 carries out
Test structural schematic diagram when envelope test；
Fig. 4 is a kind of flow chart for testing envelope test method provided in an embodiment of the present invention；
Fig. 5 is the flow chart that another kind provided in an embodiment of the present invention tests envelope test method.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1 is the structural schematic diagram for testing envelope test equipment that one embodiment of the invention provides；The envelope of testing that Fig. 2 is Fig. 1 is tested
The part-structure schematic diagram of instrument；Fig. 3 tests water distribution of the envelope test equipment tripping in integrated form concentric layers water injection string for Fig. 1's
Carry out testing structural schematic diagram when envelope test in seating nipple；Attached drawing 1 is please referred to attached drawing 3, the present embodiment provides one kind testing envelope survey
Test instrument, including：Instrument body 10 for being inserted into water distribution seating nipple 100, instrument body 10 are equipped with mutually isolated
First sensor 11a and second sensor 12a；First for being connected to the tube passage 200 that oils is formed in instrument body 10
Pressure transmission channel, between the tube passage 200 that oils, lower layer's waterflood path 101 of water distribution seating nipple 100 and lower oil pipe channel 300 mutually
Connection, first sensor 11a are set in the first pressure transmission channel, for measuring the pressure in the first pressure transmission channel；Instrument body
The second pressure transmission channel being connected to for the upper layer waterflood path 102 with water distribution seating nipple 100, second sensor are formed in 10
12a is set in the second pressure transmission channel, for measuring the pressure in the second pressure transmission channel；It is close it to be formed with first on instrument body 10
Envelope portion 15 and the second sealing 16, the first sealing 15 is for separating oil tube passage 200 and upper layer waterflood path 102, and second
Sealing 16 is for separating upper layer waterflood path 102 and lower layer's waterflood path 101.
In the present embodiment, first sensor 11a and second sensor 12a is mutually isolated refers to, first sensor 11a with
Second sensor 12a is independently set in instrument body 10, and first sensor 11a is independent of each other with second sensor 12a,
Liquid will not be passed to the position of second sensor 12a from the position of first sensor 11a, or from the position of second sensor 12a
Set the position for being passed to first sensor 11a.The tube passage 200 that oils is the tubing section above water distribution seating nipple 100, under
Oil pipe channel 300 is the tubing section positioned at 100 lower section of water distribution seating nipple.
Instrument body 10 is whole can be cylinder, and can specifically include sequentially connected pressure gauge component in an axial direction
10a, the first noumenon 10b and the second ontology 10c.The first noumenon 10b may include first end 11b and second end 12b, first end
11b with pressure gauge component 10a for connecting, and second end 12b with the second ontology 10c for connecting, first end 11b and pressure gauge group
Connection type between part 10a, between second end 12b and the second ontology 10c can be dismountable connection type, or
Non-disconnectable connection type, such as be integrally formed etc..
Specifically, pressure gauge component 10a may include shell and above-mentioned first sensor 11a and second sensor 12a,
First sensor 11a and second sensor 12a can be arranged in shell, and the first pressure transmission can be offered on the side wall of shell
Hole 17, the first pressure transmission hole 17 oil tube passage 200 for being connected to so that the liquid in the tube passage 200 that oils can enter the
In one pressure transmission channel, so that the first sensor 11a in the first pressure transmission channel can be measured in the first pressure transmission channel
Pressure.
Delivery hole 13b can be offered on the first noumenon 10b, delivery hole 13b is used for upper layer waterflood path 102 and the
Two pressure transmission channels are connected to, and the liquid in upper layer waterflood path 102 can be flow in the second pressure transmission channel, so that being located at second
Second sensor 12a in pressure transmission channel can measure the pressure in the second pressure transmission channel；First end 11b can be with pressure gauge group
Part 10a connections, specifically, can offer the second pressure transmission hole 18 in the bottom of pressure gauge component 10a, which makes
It obtains the first noumenon 10b with pressure gauge component 10a to be connected, the liquid in upper layer waterflood path 102 can pass through second successively and pass
Delivery hole 13b and the second pressure transmission hole 18 in pressure passageway and contacted with second sensor 12a.Second end 12b and the second ontology 10c
Between can form plugging structure so that second end 12b is not connected to the second ontology 10c.
Certainly, it will be appreciated to those of skill in the art that the first pressure transmission hole 17 and the specific of the second pressure transmission hole 18 open up
Position can be designed according to actual needs and specifically, be not limited to the position of above-mentioned offer.First pressure transmission channel refers to
Channel in instrument body 10 for transmitting the liquid in oiling tube passage 200, the second pressure transmission channel is referred in instrument body
Channel in 10 for transmitting the liquid in upper layer waterflood path 102.
In addition, it is further, circuit board 13a is also provided in the shell of pressure gauge component 10a, circuit board 13a can
Be arranged between first sensor 11a and second sensor 12a, and respectively with first sensor 11a and second sensor 12a
Electrical connection；One end far from the first noumenon 10b in the other end of shell can be provided with battery 14a, and battery 14a is used for first
Sensor 11a, second sensor 12 and circuit board 13a power supplies.
Specifically, pressure gauge component 1 can be dual sensor pressure meter, the water injection pressure to oil in tube passage 200 can be with
It is acted on first sensor 11a by the first pressure transmission hole 17 on shell, therefore first sensor 11a can be measured and first
Can the water injection pressure that pressure transmission hole 17 is connected to, i.e. first sensor 11a measure through the first pressure transmission hole 17 and the first pressure transmission channel
The water injection pressure of connection to oil in tube passage 200, and since lower layer's water filling of the tube passage 200 that oils, water distribution seating nipple 100 is logical
Road 101 and lower oil pipe channel 300 are connected, and lower oil pipe channel 300 and 400 combination of zones below of separate injection packer,
Therefore, first sensor 11a can measure 400 strata pressure below of separate injection packer.And due to casing protective packer 500
Stratum between separate injection packer 400 is connected to upper layer waterflood path 102, and upper layer waterflood path 102 can pass through drain
Hole 13b is connected to the second pressure transmission channel, second sensor 12a, between casing protective packer 500 and separate injection packer 400
Strata pressure can by the second pressure transmission channel (delivery hole 13b and the second pressure transmission hole 18, and with delivery hole 13b and second pass
The channel that pressure hole 18 is connected to) it acts on second sensor 12a, therefore second sensor 12a can measure casing protection packing
Strata pressure between device 500 and separate injection packer 400.
The packer of integrated form concentric layers water injection string is carried out to test the work for sealing test below by envelope test equipment is tested
The embodiment of the present invention is illustrated as principle.Wherein, the packer of integrated form concentric layers water injection string includes casing protection
Packer 500 and separate injection packer 400；The water distribution for testing envelope test equipment tripping in integrated form concentric layers water injection string is worked
In cylinder 100, make to test the predetermined position that envelope test equipment transfers to water distribution seating nipple 100, first sensor 11a can measure with
The pressure on the stratum being located under separate injection packer 400 that lower layer's waterflood path 101 is connected to is also equal to from oil pipe (upper oil pipe
Channel 200) in inject Fluid pressure, second sensor 12a can measure be connected to upper layer waterflood path 102 be located at set
The pressure on the stratum between protection of pipe packer 500 and separate injection packer 400；When carrying out testing envelope to separate injection packer 400, to
Water filling is suppressed in the tube passage 200 that oils of integrated form concentric layers water injection string, obtains the pressure value that first sensor 11a is measured
Pressure value, that is, second pressure value that i.e. first pressure value and second sensor 12a measure, first pressure value is separated-injection packing
The pressure on the stratum under device 400, second pressure value are the ground between casing protective packer 500 and separate injection packer 400
The pressure of layer, analysis compares the two pressure values, if second pressure value changes with the variation of first pressure value, can determine point
It is poorly sealed to note packer 400, if second pressure value does not change with the variation of first pressure value, but process is suppressed in water filling
In, second pressure value journey downward trend then can determine that separate injection packer 400 seals tightly, wherein the decline of second pressure value
Speed is related with the penetrating power on stratum, then stops water filling in upward oil pipe channel 200 and suppresses；When to casing protective packer
400 when carrying out testing envelope, while water filling is suppressed into well inner sleeve 600 and the tube passage 200 that oils, then casing protective packer 500
On annular space 501 in the pressure that is subject to it is identical as the water injection pressure to oil in tube passage 200, obtain first sensor 11a and survey
Pressure value i.e. the 4th pressure value that the pressure value of amount, that is, third pressure value and second sensor 12a are measured, third pressure value are
For the Fluid pressure injected out of oil tube passage 200, that is to say, that third pressure value is on casing protective packer 500
The pressure being subject in annular space 501, the 4th pressure value are the stratum between casing protective packer 500 and separate injection packer 400
Pressure, analysis compare the two pressure values can determine casing if the 4th pressure value changes with the variation of third pressure value
Protecting packer 500 is poorly sealed, if the 4th pressure value does not change with the variation of third pressure value, but is suppressed in water filling
Cheng Zhong, the 4th pressure value journey downward trend then can determine that casing protective packer 500 seals tightly, wherein the 4th pressure value
The speed of decline is related with the penetrating power on stratum, then stops the water filling into well inner sleeve and the tube passage 200 that oils and suppresses.
It is provided in an embodiment of the present invention to test envelope test equipment, the water distribution for tripping in integrated form concentric layers water injection string
In seating nipple, separate injection packer and casing protective packer to integrated form concentric layers water injection string carry out testing envelope test, when
When carrying out testing envelope to separate injection packer, can by into the tube passage that oils of integrated form concentric layers water injection string water filling beat
Pressure, it is first pressure value to measure the strata pressure under separate injection packer by first sensor, is measured by second sensor
Value formation pressure between casing protective packer and separate injection packer is second pressure value, can comparative analysis second pressure value with
First pressure value can determine that separate injection packer is poorly sealed, instead if second pressure value changes with the variation of first pressure value
It, then can determine that separate injection packer sealing is tight；When carrying out testing envelope to casing protective packer, can simultaneously to well inner sleeve and
Water filling is suppressed in oil pipe, measured by first sensor oil water injection pressure in tube passage namely casing protective packer it
On annular space in pressure be third pressure value, second sensor measures the ground between casing protective packer and separate injection packer
Lamination force value is the 4th pressure value, comparative analysis third pressure value and the 4th pressure value, if the 4th pressure value is with third pressure value
Variation and change, then can determine that casing protective packer is poorly sealed, conversely, then can determine that casing protective packer sealing is tight
It is close.Testing envelope test equipment and capable of carrying out testing envelope test to casing protective packer and separate injection packer for the embodiment of the present invention, it is whole
A test can be used about 3 hours and just can complete, and the test period of well testing indicative curve method compared with prior art is generally about
Three days are needed, envelope test period is tested in reduction, improves working efficiency.
In addition, inlet opening 19 and fluid hole 20 can also be offered on instrument body 10, can also be set in instrument body 10
There are the flow-guiding channel of connection inlet opening 19 and fluid hole 20, flow-guiding channel to be connected to lower layer waterflood path 101 by inlet opening 19,
Flow-guiding channel is connected to by fluid hole 20 with lower oil pipe channel 300.Specifically, inlet opening 19 and fluid hole 20 can be arranged
On two ontology 10c, the liquid flowed out from lower layer's waterflood path 101 of water distribution seating nipple 100 can be entered by inlet opening 19
It in flow-guiding channel, and is exited into lower oil pipe channel 300 by fluid hole 20, further, in lower oil pipe channel 300
Liquid is then exited by oil pipe bottom screen casing to 400 stratum below of separate injection packer.
Further, can also be formed with third sealing 21 on instrument body 10, third sealing 21 be located at into
Between fluid apertures 19 and fluid hole 20, the gap between the lateral wall for blocking instrument body 10 and water distribution seating nipple 100.It should
Third sealing 21 can be formed on the second ontology 10c, and elasticity be extruded in instrument body 10 and water distribution seating nipple 100 it
Between.By the sealing function of third sealing 21, the liquid in lower layer's waterflood path 101 of water distribution seating nipple 100 can be prevented
It flows out, and makes logical from lower layer's water filling of water distribution seating nipple 100 in gap between instrument body 10 and water distribution seating nipple 100
The liquid flowed out in road 101 is only capable of flowing into inlet opening 19, and is flowed out by fluid hole 20.
In the above-described embodiments, the first sealing 15, the second sealing 16 and third sealing 21 can be to be set to
O-ring seals on instrument body 10.Wherein, it is circular rubber ring, own leakproofness that O-ring seal, which is a kind of section,
Effect, without doing periodic adjustment, leakproofness can not be influenced by the direction of motion when being slidingly sealed, small, be made simultaneously
It is adaptable with convenience, it is widely used.
Further, in the above-described embodiments, the top of instrument body 10 is also provided with attachment cap 22, and attachment cap 22 is used
It is connect in steel wire for logging, above carries or transfer in well by steel wire for logging so as to test envelope test equipment.By steel wire for logging and company
Cap 22 is connect to be connected, by steel wire for logging above carry or lower exoergic makes to test envelope test equipment in oily in-pipe, it is simple in structure, be convenient for
Operation.
Particularly, it in any of the above-described embodiment, can be equipped in the axial direction to instrument body on instrument body 10
The limiting section 23 of 10 limits.Limiting section 23 carries out axial limiting to instrument body 10, can limit the decentralization position of instrument body 10
It sets, when instrument body 10, which transfers to limiting section 23, to be located on water distribution seating nipple 100, or snaps onto water distribution seating nipple 100
When upper, at this point, can then indicate that instrument body 10 has arrived at predeterminated position, can be tested at this time, passed through limiting section 23
The lowered position for capableing of precise positioning device ontology 10 is set, to ensure the precision of test.
Specifically, limiting section 23 is extends outwardly the step to be formed from the lateral wall of instrument body, step is for setting up
Onto water distribution seating nipple.Certainly, axial limit, the knot of limiting section 23 carry out instrument body 10 by limiting section 23 to realize
Configuration formula other than the form of step, can also there are many kinds of, for example, it is also possible to be being inserted radially into along instrument body 10
Positioning pin forms limiting section 23, and when specifically used, positioning pin is resisted against the top of water distribution seating nipple 100.Certainly, limiting section
23 form can also be other structures, as long as axially position can be carried out to instrument body 10, and can meet operation and require,
Here, the present embodiment is not particularly limited.
Embodiment two
Fig. 4 is a kind of flow chart for testing envelope test method provided in an embodiment of the present invention；As shown in figure 4, the present embodiment carries
Testing envelope test method for one kind, may include any of the above-described embodiment provide test envelope test equipment, this is tested envelope test method and uses
The packer of integrated form concentric layers water injection string is carried out to test envelope test, this method packet in by above-mentioned envelope test equipment of testing
It includes：
S101, the default position in envelope test equipment tripping in the water distribution seating nipple of integrated form concentric layers water injection string will be tested
It sets.
Specifically, the predeterminated position can be depending on actual test needs, for example, can pass through the limit on instrument body
Position portion is defined the placement location for testing envelope test equipment.When the limiting section reaches the operating position with the cooperation of water distribution seating nipple
When, first seal and second seal can separate the upper layer waterflood path and lower layer's waterflood path of water distribution seating nipple, and second
Pressure transmission channel is communicated in upper layer waterflood path, and second sensor is communicated in upper layer waterflood path, and first sensor is communicated in lower layer
Waterflood path.
When limiting section is seated at water distribution seating nipple, first sensor and oil tube passage, lower layer's waterflood path, and dispensing
Combination of zones under packer, first sensor can measure the pressure on the stratum under separate injection packer；Second sensor
With delivery hole, upper layer waterflood path to the combination of zones between casing protective packer and separate injection packer, first sensor energy
Enough measure the pressure on the stratum between casing protective packer and separate injection packer.
S102, into the oil pipe of integrated form concentric layers water injection string, water filling is suppressed, and obtains first sensor measures the
The second pressure value that one pressure value and second sensor measure.
Specifically, when carrying out testing envelope to separate injection packer, to the tube passage that oils of integrated form concentric layers water injection string
Interior water filling is suppressed, and it is first pressure value that first sensor, which measures the strata pressure under separate injection packer, and second sensor measures
Value formation pressure between casing protective packer and separate injection packer is second pressure value, executes step S103 later to judge
The leakproofness of separate injection packer.
If S103, second pressure value change with the variation of first pressure value, it is determined that integrated form concentric layers water injection pipe
The separate injection packer of column is poorly sealed, if the second pressure value does not change with the variation of the first pressure value, it is determined that
The separate injection packer sealing of integrated form concentric layers water injection string is tight.
S104, stop the water filling into the oil pipe and suppress.
S105 at the same into well inner sleeve and oil pipe water filling suppress, obtain first sensor measure third pressure value with
And the 4th pressure value that second sensor measures.
When carrying out testing envelope to casing protective packer, while water filling is suppressed into well inner sleeve and oil pipe, the first sensing
Device measures the water injection pressure to oil in tube passage, that is, the pressure in the annular space on casing protective packer is third pressure
Value, it is the 4th pressure value that second sensor, which measures the value formation pressure between casing protective packer and separate injection packer, later
Step S106 is executed to judge the leakproofness of casing protective packer.
If S106, the 4th pressure value change with the variation of third pressure value, it is determined that integrated form concentric layers water injection pipe
The casing protective packer of column is poorly sealed, if the 4th pressure value does not change with the variation of third pressure value, it is determined that integrated
The casing protective packer sealing of formula concentric layers water injection string is tight.
S107, stop suppressing to well inner sleeve and the tube passage that oils (oil pipe) interior water filling.
It is provided in an embodiment of the present invention to test envelope test method, envelope test equipment tripping in will be tested to integrated form concentric layers water filling
In the water distribution seating nipple of tubing string, the separate injection packer and casing protective packer of integrated form concentric layers water injection string are tested
Envelope test, when carrying out testing envelope to separate injection packer, into the oil pipe of integrated form concentric layers water injection string water filling suppress, pass through
It is first pressure value that first sensor, which measures the strata pressure under separate injection packer, and second sensor measures casing protection packing
Value formation pressure between device and separate injection packer is second pressure value, comparative analysis second pressure value and first pressure value, if
Second pressure value changes with the variation of first pressure value, then can determine that separate injection packer is poorly sealed, conversely, then can determine point
It is tight to note packer sealing；When carrying out testing envelope to casing protective packer, while water filling is suppressed into well inner sleeve and oil pipe,
The water injection pressure in oil pipe is measured by first sensor, that is, the pressure in the annular space on casing protective packer is the
Three pressure values, it is the 4th pressure that second sensor, which measures the value formation pressure between casing protective packer and separate injection packer,
Value, comparative analysis third pressure value can be true if the 4th pressure value changes with the variation of third pressure value with the 4th pressure value
It is poorly sealed to determine casing protective packer, conversely, then can determine that casing protective packer sealing is tight.The embodiment of the present invention is tested
Casing protective packer and separate injection packer can be carried out to test envelope test by sealing test equipment, also, entire test can be used greatly
Just it can complete within about 3 hours, the test period of well testing indicative curve method compared with prior art generally takes around three days, and reduction is tested
Test period is sealed, working efficiency is improved.
Fig. 5 is the flow chart that another kind provided in an embodiment of the present invention tests envelope test method, as shown in figure 5, the present invention
Another embodiment provides one kind and testing envelope test method, for being noted to integrated form concentric layers by above-mentioned envelope test equipment of testing
The packer of water pipe column carries out testing envelope test, and this method includes：
S201, the default position in envelope test equipment tripping in the water distribution seating nipple of integrated form concentric layers water injection string will be tested
It sets.
Specifically, the predeterminated position can be depending on actual test needs, for example, can pass through the limit on instrument body
Position portion is defined the placement location for testing envelope test equipment.When the limiting section reaches the operating position with the cooperation of water distribution seating nipple
When, first seal and second seal can separate the upper layer waterflood path and lower layer's waterflood path of water distribution seating nipple, and second
Pressure transmission channel is communicated in upper layer waterflood path, and second sensor is communicated in upper layer waterflood path, and first sensor is communicated in lower layer
Waterflood path.
When limiting section is seated at water distribution seating nipple, first sensor and oil tube passage, lower layer's waterflood path, and dispensing
Combination of zones under packer, first sensor can measure the pressure on the stratum under separate injection packer；Second sensor
With delivery hole, upper layer waterflood path to the combination of zones between casing protective packer and separate injection packer, first sensor energy
Enough measure the pressure on the stratum between casing protective packer and separate injection packer.
S202, into the oil pipe of integrated form concentric layers water injection string, water filling is suppressed, and obtains first sensor measures the
The second pressure value that one pressure value and second sensor measure.
S203, when into the oil pipe of integrated form concentric layers water injection string, water filling is suppressed, obtain the first well head pressure.
It is generally both provided in well head and measures the pressure gauge for injecting Fluid pressure into well, the first well is obtained by pressure gauge
Mouth pressure, this first well head pressure are the water injection pressure injected in upward oil pipe channel (oil pipe).
If S204, second pressure value change with the variation of first pressure value, it is determined that integrated form concentric layers water injection pipe
The separate injection packer of column is poorly sealed, if second pressure value does not change with the variation of first pressure value, it is determined that integrated form is same
The separate injection packer sealing of heart separate layer water injection string is tight.
S205, stop the water filling into the oil pipe and suppress.
S206, when stop into oil pipe, water filling is suppressed when, obtain the second well head pressure, by the way that the pressure gauge in well head is arranged
Measurement obtains the second well head pressure.
S207, the first difference for calculating the first well head pressure and the second well head pressure, and calculate first pressure value and the
Second difference of two pressure values.
S208, the second difference divided by the first difference are obtained into the first ratio, wherein the first ratio is as separate injection packer
Precision value.
S209, when the first ratio be more than 85% when, the precision of separate injection packer is tight, when the first ratio is 80%
When between to 85%, the precision of separate injection packer oozes to be micro-, when the first ratio is between 65% to 85%, separated-injection packing
The precision of device oozes to be small, and when the first ratio is between 50% to 65%, the precision of separate injection packer is leakage, when
For first ratio when between 40% to 50%, the precision of separate injection packer is leakage, when the first ratio is less than 40%, point
The precision for noting packer is apparent leakage.
Water filling in upward oil pipe channel is obtained respectively and suppresses and stop well head pressure when water filling is suppressed, and calculates well head
The pressure difference of pressure, if ignoring the error of pipe damage and pressure gauge, even if when this pressure difference is separate injection packer sealing above and below it
The ideal pressure difference being subject to, and the pressure difference by testing between the envelope test equipment first pressure value measured and second pressure value is point
The practical measurement pressure difference that packer is subject to up and down is noted, pressure difference divided by ideal pressure difference are measured by practical, according to ratio to dividing
The leakproofness for noting packer carries out quantitative analysis.
S210 at the same into well inner sleeve and oil pipe water filling suppress, obtain first sensor measure third pressure value with
And the 4th pressure value that second sensor measures.
S211, when simultaneously into well inner sleeve and oil pipe, water filling is suppressed when, obtain third well head pressure.
If S212, the 4th pressure value change with the variation of third pressure value, it is determined that integrated form concentric layers water injection pipe
The casing protective packer of column is poorly sealed, if the 4th pressure value does not change with the variation of third pressure value, it is determined that integrated
The casing protective packer sealing of formula concentric layers water injection string is tight.
S213, stop the water filling into well inner sleeve and the tube passage that oils and suppress.
S214, when stop into well inner sleeve and the tube passage that oils, water filling is suppressed when, obtain the 4th well head pressure.
S215, the third difference for calculating third well head pressure and the 4th well head pressure, and calculate third pressure value and the
4th difference of four pressure values.
S216, the 4th difference divided by third difference are obtained into the second ratio, wherein the second ratio is insulated as casing protection
The precision value of device.
S217, when the second ratio be more than 85% when, the precision of casing protective packer is tight, when the second ratio exists
When between 80% to 85%, the precision of casing protective packer oozes to be micro-, when the second ratio is between 65% to 85%,
The precision of casing protective packer oozes to be small, when the second ratio is between 50% to 65%, casing protective packer
Precision is leakage, and when the second ratio is between 40% to 50%, the precision of casing protective packer is leakage, when
When second ratio is less than 40%, the precision of casing protective packer is apparent leakage.
It obtains respectively while well head pressure when water filling is suppressed is suppressed and stopped in water filling into well inner sleeve and oil pipe, and
The pressure difference of well head pressure is calculated, if ignoring the error of pipe damage and pressure gauge, this pressure difference seals for casing protective packer
When its ideal pressure difference for being subject to up and down, and by testing between the third pressure value and the 4th pressure value that envelope test equipment measures
Pressure difference is the practical measurement pressure difference that casing protective packer is subject to up and down, and pressure difference divided by ideal pressure difference are measured by practical,
Quantitative analysis is carried out to the leakproofness of casing protective packer according to ratio.
It is provided in an embodiment of the present invention to test envelope test method, envelope test equipment tripping in will be tested to integrated form concentric layers water filling
In the water distribution seating nipple of tubing string, the separate injection packer and casing protective packer of integrated form concentric layers water injection string are tested
Envelope test, when carrying out testing envelope to separate injection packer, into the oil pipe of integrated form concentric layers water injection string water filling suppress, pass through
It is first pressure value that first sensor, which measures the strata pressure under separate injection packer, and second sensor measures casing protection packing
Value formation pressure between device and separate injection packer is second pressure value, comparative analysis second pressure value and first pressure value, if
Second pressure value changes with the variation of first pressure value, then can determine that separate injection packer is poorly sealed, conversely, then can determine point
It is tight to note packer sealing；When carrying out testing envelope to casing protective packer, while being noted into well inner sleeve and the tube passage that oils
Water is suppressed, and measures the water injection pressure in oil pipe by first sensor, that is, in the annular space on casing protective packer
Pressure is third pressure value, and it is that second sensor, which measures the value formation pressure between casing protective packer and separate injection packer,
Four pressure values, comparative analysis third pressure value and the 4th pressure value, if the 4th pressure value changes with the variation of third pressure value,
It then can determine that casing protective packer is poorly sealed, conversely, then can determine that casing protective packer sealing is tight.The present invention is implemented
Example tests envelope test equipment and can carry out testing envelope test to casing protective packer and separate injection packer, also, entire test can
It just can be completed using about 3 hours, the test period of well testing indicative curve method compared with prior art generally takes around three days,
Envelope test period is tested in reduction, improves working efficiency
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. one kind testing envelope test equipment, which is characterized in that including：Instrument body for being inserted into water distribution seating nipple, it is described
Instrument body is equipped with mutually isolated first sensor and second sensor；
The first pressure transmission channel for being connected to the tube passage that oils is formed in the instrument body, the tube passage that oils is matched
It is interconnected between the lower layer's waterflood path and lower oil pipe channel of water seating nipple, the first sensor is set to described first and passes
In pressure passageway, for measuring the pressure in first pressure transmission channel；
The second pressure transmission channel being connected to for the upper layer waterflood path with water distribution seating nipple is formed in the instrument body, it is described
Second sensor is set in second pressure transmission channel, for measuring the pressure in second pressure transmission channel；
The first sealing and the second sealing are formed on the instrument body, first sealing is for separating described oil
Tube passage and the upper layer waterflood path, second sealing is for separating the upper layer waterflood path and lower layer's water filling
Channel.
2. according to claim 1 test envelope test equipment, which is characterized in that offered on the instrument body inlet opening and
Fluid hole is additionally provided with the flow-guiding channel for being connected to the inlet opening and the fluid hole, the flow-guiding channel in the instrument body
It is connected to lower layer's waterflood path by the inlet opening, the flow-guiding channel is logical by the fluid hole and the lower oil pipe
Road is connected to.
3. according to claim 2 test envelope test equipment, which is characterized in that be also formed with third on the instrument body
Sealing, the third sealing position is between the inlet opening and the fluid hole, for blocking outside the instrument body
Gap between side wall and water distribution seating nipple.
4. according to claim 1 test envelope test equipment, which is characterized in that the top of the instrument body is equipped with connection
Cap, the attachment cap for connect with steel wire for logging so that it is described test seal test equipment by the steel wire for logging in well on
It carries or transfers.
5. according to claim 3 test envelope test equipment, which is characterized in that first sealing, second sealing
Portion and the third sealing are the O-ring seals being set on the instrument body.
6. testing envelope test equipment according to Claims 1 to 5 any one of them, which is characterized in that the instrument body is equipped with
For in the axial direction to the limiting section of instrument body limit.
7. according to claim 6 test envelope test equipment, which is characterized in that the limiting section is from the instrument body
Lateral wall extends outwardly and the step that is formed, and the step is for setting up the water distribution seating nipple.
8. one kind testing envelope test method, which is characterized in that test envelope test equipment using such as claim 1~7 any one of them
The packer of integrated form concentric layers water injection string is carried out to test envelope test, this method includes：
The envelope test equipment of testing is transferred into the water distribution seating nipple of the integrated form concentric layers water injection string to default position
It sets；
Into the tube passage that oils of the integrated form concentric layers water injection string, water filling is suppressed, and is obtained the first sensor and is measured
First pressure value and the second sensor measure second pressure value；
If the second pressure value changes with the variation of the first pressure value, it is determined that the integrated form concentric layers water filling
The separate injection packer of tubing string is poorly sealed；If the second pressure value does not change with the variation of the first pressure value, really
The separate injection packer sealing of the fixed integrated form concentric layers water injection string is tight；
Stop the water filling into the tube passage that oils to suppress；
Into well inner sleeve and the tube passage that oils, water filling is suppressed simultaneously, obtains the third pressure that the first sensor measures
The 4th pressure value that value and the second sensor measure；
If the 4th pressure value changes with the variation of the third pressure value, it is determined that the integrated form concentric layers water filling
The casing protective packer of tubing string is poorly sealed, if the 4th pressure value does not change with the variation of the third pressure value,
Then determine that the casing protective packer sealing of the integrated form concentric layers water injection string is tight；
Stop the water filling into the well inner sleeve and the tube passage that oils to suppress.
9. according to claim 8 test envelope test method, which is characterized in that the method further includes：
When water filling is suppressed into the tube passage that oils of the integrated form concentric layers water injection string, the first well head pressure is obtained；
When water filling is suppressed into the oil pipe for stopping, the second well head pressure is obtained；
Calculate the first difference of first well head pressure and second well head pressure, and calculate the first pressure value with
Second difference of the second pressure value；
Second difference divided by first difference are obtained into the first ratio, wherein first ratio is as the dispensing
The precision value of packer；
If first ratio is more than 85%, it is determined that the precision of the separate injection packer is tight；If first ratio
Value is between 80% to 85%, it is determined that the precision of the separate injection packer is micro- oozes；If first ratio is 65%
To between 85%, it is determined that the precision of the separate injection packer is small oozes；If first ratio 50% to 65% it
Between, it is determined that the precision of the separate injection packer is leakage；If first ratio is between 40% to 50%, it is determined that
The precision of the separate injection packer is leakage；If first ratio is less than 40%, it is determined that the separate injection packer
Precision is apparent leakage.
10. according to claim 8 or claim 9 test envelope test method, which is characterized in that the method further includes：
When water filling is suppressed into well inner sleeve and the oil pipe simultaneously, third well head pressure is obtained；
When water filling is suppressed into the well inner sleeve and the oil pipe for stopping, the 4th well head pressure is obtained；
Calculate the third difference of the third well head pressure and the 4th well head pressure, and calculate the third pressure value with
4th difference of the 4th pressure value；
4th difference divided by the third difference are obtained into the second ratio, wherein second ratio is as described sleeve pipe
The precision value of protecting packer；
If second ratio is more than 85%, it is determined that the precision of described sleeve pipe protecting packer is tight；If described
Two ratios are between 80% to 85%, it is determined that the precision of described sleeve pipe protecting packer is micro- oozes；If second ratio
Value is between 65% to 85%, it is determined that the precision of described sleeve pipe protecting packer is small oozes；If second ratio exists
Between 50% to 65%, it is determined that the precision of described sleeve pipe protecting packer is leakage；If second ratio is 40%
To between 50%, it is determined that the precision of described sleeve pipe protecting packer is leakage；If second ratio is less than 40%,
Then determine that the precision of described sleeve pipe protecting packer is apparent leakage.
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| CN201710026448.4A CN108303222B (en) | 2017-01-13 | 2017-01-13 | Seal checking test instrument and seal checking test method |
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| CN111749684A (en) * | 2019-03-11 | 2020-10-09 | 中国石油天然气股份有限公司 | Seal testing method |
| CN112343584A (en) * | 2020-11-03 | 2021-02-09 | 中国石油天然气股份有限公司 | Pressure working barrel for external channeling of horizontal well inspection pipe and verification method thereof |
| CN112504661A (en) * | 2020-11-18 | 2021-03-16 | 南京航空航天大学 | Device and method for measuring pressure distribution among multiple layers of sealing rings |
| CN112855096A (en) * | 2021-02-03 | 2021-05-28 | 李青 | Simple separate layer water injection string |
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