CN109306857A - Selective layering perforation oil testing tubular column and method - Google Patents
Selective layering perforation oil testing tubular column and method Download PDFInfo
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- CN109306857A CN109306857A CN201710630415.0A CN201710630415A CN109306857A CN 109306857 A CN109306857 A CN 109306857A CN 201710630415 A CN201710630415 A CN 201710630415A CN 109306857 A CN109306857 A CN 109306857A
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- perforating gun
- pressure
- formation testing
- starting pressure
- tubing string
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000011042 selective layering Methods 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 claims abstract description 23
- 230000015572 biosynthetic process Effects 0.000 claims description 70
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 claims description 67
- 238000010304 firing Methods 0.000 claims description 43
- 238000005422 blasting Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 230000004913 activation Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 238000005065 mining Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000010008 shearing 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
- E21B43/1185—Ignition systems
-
- 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
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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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a selective layered perforation oil testing tubular column and a method. This tubular column includes: the packer, set up the upper ignition head below the packer, set up the upper perforating gun below the upper ignition head, set up the lower ignition head below the upper perforating gun, set up the lower perforating gun below the lower ignition head, the upper pressure pipe that the upper end communicates with annular space of oil jacket located above the packer, the underpart connects with inside of the upper ignition head; the upper end of the lower pressure transmission pipe is communicated with the upper pressure transmission pipe, and the lower end of the lower pressure transmission pipe is communicated with the interior of the lower ignition head; the upper ignition head can ignite and detonate the upper perforating gun under a first preset starting pressure, and the lower ignition head can ignite and detonate the lower perforating gun under a second preset starting pressure; the first and second preset activation pressures are different. By adopting the tubular column, layered oil testing can be realized by one-time tubular column, and the sequence of the production layers for oil testing can be selected at will according to actual needs, so that the construction period is effectively shortened, and the cost is reduced.
Description
Technical field
The present invention relates to oil-gas mining technical field, in particular to a kind of alternative layering perforation formation testing tubing string and side
Method.
Background technique
During oil-gas mining, need to oil/gas well carry out formation testing, with obtain oil-gas Layer liquid-producing capacity, pressure, temperature,
The related datas such as fluidity.In oil/gas well During Oil Testing Process, due to existing between the different payzones for producing liquid types, different pressures system
It interferes with each other, each payzone contributes difference for whole liquid-producing capacity, therefore, in order to more accurately obtain the production liquid energy of oil-gas Layer
The data such as power need respectively to study the case where each payzone using the method for formation testing by layer.
Existing formation testing by layer, that is, according to sequence from bottom to top, is first being covered using the method returned on layer-by-layer formation testing, sealing
Perforation at the corresponding position of Guan Shangyu payzone, establishes the flow channel of formation fluid and pit shaft, to acquire the production of the payzone
The data such as liquid ability.After the data collection of the payzone, tripping in bridge plug (or ash plug) closes the payzone.It repeats later
Above-mentioned steps carry out formation testing to remaining payzone.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems: existing point
In layer formation testing method, need repeatedly to rise lower tubular column and tripping in bridge plug (or ash plug), so that existing formation testing by layer method is applied
The work period is long, costly, and existing formation testing by layer method is only capable of trying each payzone according to sequence from bottom to top
Oil cannot select the sequence of payzone.
Summary of the invention
In order to solve the above technical problems, the present invention provide it is a kind of formation testing by layer can be realized using one-trip string, and
And can arbitrarily select to carry out the alternative layering perforation formation testing tubing string of the sequence of the payzone of formation testing, and based on the tubing string can
Selective layering perforation formation testing method.
Specifically, including technical solution below:
In a first aspect, the embodiment of the invention provides a kind of alternative layering perforation formation testing tubing string, the tubing string setting
In casing, the tubing string includes:
Packer,
Upper igniter head below the packer is set,
Upper perforating gun below described upper igniter head is set,
Down-firing head below the upper perforating gun is set,
Lower perforating gun below the down-firing head is set,
Upper end be connected to the oil jacket annulus being located above the packer, lower end and described upper igniter head inside be connected to it is upper
Pressure tube；
And the lower pressure tube that upper end is connected to the upper pressure tube, lower end and down-firing head inside are connected to；
Described upper igniter head can preset starting pressure down-firing first and ignite the upper perforating gun, the down-firing head
In the second default starting pressure down-firing and the lower perforating gun can be ignited；
Described first default starting pressure is different with the described second default starting pressure.
Further, when igniting described upper igniter head in the ban, it is default that the described first default starting pressure is less than described second
Start pressure；When igniting the down-firing head in the ban, the described first default starting pressure is greater than the described second default starting pressure.
Further, the tubing string further include: the upper end of orientation spool, the orientation spool is connected by oil pipe and well head
It connects, the lower end of the orientation spool is connect by oil pipe with the upper end of the packer.
Further, the tubing string further include: the lower end of damper, the upper end of the damper and the packer connects
It connects.
Further, the tubing string further include: screen casing, the upper end of the screen casing pass through the lower end of oil pipe and the damper
Connection, the lower end of the screen casing is connect with the upper end of the upper perforating gun.
Further, the tubing string further include: the pressure relief device that is connect with the lower end of the lower perforating gun and with it is described
The silk plug of the lower end connection of pressure relief device.
Further, described upper igniter head and the down-firing head are shockproof igniter.
Second aspect, the embodiment of the invention provides a kind of alternative layering perforation formation testing method, the method passes through
Above-mentioned alternative layering perforation formation testing tubing string is implemented, comprising the following steps:
The alternative is layered under perforation formation testing tubing string lower going-into-well, and makes the packer setting by step a；
Step b, make the pressure of oil jacket annulus reach igniter head the first default starting pressure or down-firing head the
Two default starting pressure, make upper perforating gun described in described upper igniter head or the down-firing head igniting blasting or it is described under penetrate
Hole rifle carries out perforation to the upper perforating gun or the corresponding payzone of the lower perforating gun and asks productions, the acquisition upper perforating gun or
The yield data of the lower corresponding payzone of perforating gun described in person；
Step c makes the pressure of oil jacket annulus reach the default starting pressure of the igniter head that do not light a fire in stepb, makes
Igniter head igniting that step b does not light a fire, ignites corresponding perforating gun, to the upper perforating gun and the corresponding production of the lower perforating gun
Layer carries out closing to adopt asking production, obtains the sum of the yield of the upper perforating gun and the corresponding payzone of lower perforating gun data；
The sum of the yield obtained in step c data are subtracted the corresponding payzone of perforating gun ignited in stepb by step d
Yield data, obtain the yield data of the corresponding payzone of the perforating gun ignited in step c.
Further, before the step a, the method also includes:
Determine that the corresponding payzone of the upper perforating gun and the corresponding payzone of the lower perforating gun carry out the sequence of perforation formation testing；
The described first default starting pressure and the second default starting pressure are determined according to the sequence of the perforation formation testing
Size relation, if first carrying out perforation formation testing to the corresponding payzone of the upper perforating gun, the described first default starting pressure is small
In the described second default starting pressure, if first carrying out perforation formation testing to the corresponding payzone of the lower perforating gun, described first is pre-
If starting pressure is greater than the described second default starting pressure.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
In alternative layering perforation formation testing tubing string provided in an embodiment of the present invention, upper igniter head and down-firing head have respectively
There is different default starting pressure, by controlling the pressure of oil jacket annulus, is transferred to the pressure of oil jacket annulus using pressure tube
Igniter head.In actual use, the pressure that can first control oil jacket annulus is any one in upper igniter head and down-firing head
Default starting pressure, makes one of igniter head nod, and corresponding perforating gun is ignited, later to the perforating gun being detonated
Corresponding payzone carries out that production is asked to obtain yield data.Later, the pressure for controlling oil jacket annulus is that the default of another igniter head is opened
Dynamic pressure makes its point fight and ignites corresponding perforating gun, carries out closing to adopt to ask producing to the corresponding payzone of two perforating guns later
The sum of yield, is subtracted the yield data of the corresponding payzone of the perforating gun being first detonated by the sum of the yield to two payzones data,
The yield data for the corresponding payzone of perforating gun being detonated after can be obtained.
As it can be seen that using alternative layering perforation formation testing tubing string provided in an embodiment of the present invention, using one-trip string
It realizes formation testing by layer, and can arbitrarily select to carry out the sequence of the payzone of formation testing according to actual needs, effectively shorten formation testing by layer
Construction period, and reduce expense, and can more accurately obtain the yield data of each payzone, the exploration of oil gas field opened
Hair has a very important significance.
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 the structural schematic diagram of alternative layering perforation formation testing tubing string provided in an embodiment of the present invention.
Appended drawing reference respectively indicates in figure:
1- well head；
2- oil pipe；
3- casing；
4- orientation spool；
The upper pressure tube of 5-；
6- packer；
7- screen casing；
The upper igniter head of 8-；
Pressure tube under 9-；
The upper perforating gun of 10-；
11- damper；
12- down-firing head；
Perforating gun under 13-；
14- pressure relief device；
15- silk plug.
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.Unless otherwise defined, all technical terms used in the embodiment of the present invention all have and art technology
The normally understood identical meaning of personnel.
In a first aspect, the embodiment of the invention provides a kind of alternative layering perforation formation testing tubing string, tubing string setting set
Guan Zhong, referring to Fig. 1, which includes:
Packer 6,
Upper igniter head 8 below packer 6 is set,
Upper perforating gun 10 below upper igniter head 8 is set,
Down-firing head 12 below upper perforating gun 10 is set,
Lower perforating gun 13 below down-firing head 12 is set,
The upper pressure tube that upper end is connected to, is connected to inside lower end and upper igniter head 8 with the oil jacket annulus for being located at 6 top of packer
5；
And upper end is connected to upper pressure tube 5, the lower pressure tube 9 that is connected to inside lower end and down-firing head 12；
Upper igniter head 8 in the first default starting pressure down-firing and can ignite upper perforating gun 10, and down-firing head 12 can be the
Two default starting pressure down-firings simultaneously ignite lower perforating gun 13；
First default starting pressure is different with the second default starting pressure.
In alternative layering perforation formation testing tubing string provided in an embodiment of the present invention, pass through upper pressure tube 5 and lower pressure tube 9
By the supreme igniter head 8 of the pressure transmission of oil jacket annulus and down-firing head 12, when the pressure of oil jacket annulus is the first of upper igniter head 8
When default starting pressure or the second default starting pressure of down-firing head 12, corresponding igniter head is lighted a fire corresponding perforating gun
It ignites, to carry out perforation to the corresponding payzone of perforating gun.First due to upper igniter head 8 presets starting pressure and down-firing
The default starting pressure of the second of first 12 is different, therefore, igniter head point can only be made to fight ignition oil jacket annulus pressurization every time
Corresponding perforating gun.
Based on the above, in actual use, the pressure that can first control oil jacket annulus is upper igniter head 8 and down-firing
The default starting pressure of any one in first 12, makes one of igniter head nod, and corresponding perforating gun is ignited, right later
The corresponding payzone of the perforating gun being detonated carries out that production is asked to obtain yield data.Later, it is another for controlling the pressure of oil jacket annulus
The default starting pressure of a igniter head makes its point fight and ignites corresponding perforating gun, later to the corresponding production of two perforating guns
Layer, which close, adopts the sum of the yield for asking production to obtain two payzones data, and it is corresponding that the sum of yield is subtracted to the perforating gun being first detonated
The yield data of payzone, the yield data for the corresponding payzone of perforating gun being detonated after can be obtained.
For example, first controlling oil jacket when first asking production to the corresponding payzone of upper perforating gun 10 (the payzone A i.e. in figure) progress perforation
The pressure of annular space is the first default starting pressure of upper igniter head 8, so that igniter head 8 is lighted a fire, upper perforating gun 10 is ignited, to production
Layer A carries out perforation and asks production, obtains the yield data of payzone A.And then the pressure of control oil jacket annulus is the of down-firing head 12
Two default starting pressure, make down-firing head 12 light a fire, lower perforating gun 13 are ignited, and carry out closing to adopt to payzone A and payzone B asking production,
Obtain the sum of the yield of payzone A and payzone B data.The yield number of payzone A is subtracted with the sum of the yield of payzone A and payzone B data
According to the yield data of payzone B can be obtained.
As it can be seen that using alternative layering perforation formation testing tubing string provided in an embodiment of the present invention, using one-trip string
It realizes formation testing by layer, and can arbitrarily select to carry out the sequence of the payzone of formation testing according to actual needs, effectively shorten formation testing by layer
Construction period, and reduce expense, and can more accurately obtain the yield data of each payzone, the exploration of oil gas field opened
Hair has a very important significance.
It will be appreciated by persons skilled in the art that the first default starting pressure and down-firing head 12 of upper igniter head 8
Second default starting pressure is meant that, only when pressure reaches the first default starting pressure, can just make 8 points of igniter head
Fire can just make down-firing head 12 light a fire, less or greater than default starting only when pressure reaches the second default starting pressure
Pressure, igniter head cannot all light a fire.
It is internal that usually there is shooting hydraulic piston and detonator for the igniter head applied in oil-gas mining field, as
When being greater than the shearing force of the shear pin of locking shooting hydraulic piston with the pressure on shooting hydraulic piston, shear pin is cut, percussion
Piston downlink impact detonator makes cap sensitive complete igniting.One can be arranged inside igniter head only in specified pressure
The valve (being more than or less than specified pressure valve cannot open) that can be opened, after valve opening, pressure could be acted on
On shear pin, and then shooting hydraulic piston impact detonator completes igniting.
The specific number for the second default starting pressure for presetting starting pressure and down-firing head 12 for the first of upper igniter head 8
The value embodiment of the present invention does not make considered critical, as long as the two is differing from each other.Can be according to its corresponding payzone the case where
Come the default starting pressure value set.
Further, preferably, determining the first default starting pressure and second according to the sequence for carrying out perforation formation testing
The size relation of default starting pressure sets the default starting pressure for first carrying out corresponding igniter head of payzone of perforation formation testing to
Lesser numerical value.Specifically, when carrying out perforation formation testing to the corresponding payzone of upper perforating gun 10 in the ban, upper igniter head 8 is first ignited,
Then the first starting pressure is less than the second default starting pressure, i.e., upper igniter head 8 is using default starting lesser igniter head of pressure；When
When first carrying out perforation formation testing to the corresponding payzone of lower perforating gun 13, down-firing head 12 is first ignited, then the first starting pressure is greater than the
Two default starting pressure, i.e., upper igniter head 8 is using default starting biggish igniter head of pressure.It can be guaranteed using such design
Formation testing by layer is carried out according to preset sequence, is not appeared in during the default starting biggish igniter head of pressure of ignition, is preset
The problem of starting lesser igniter head of pressure is also detonated,
Further, referring to Fig. 1, alternative layering perforation formation testing tubing string provided in an embodiment of the present invention further includes positioning
Pipe nipple 4, screen casing 7, damper 11, pressure relief device 14 and silk plug 15, specifically:
The upper end of orientation spool 4 is connect by oil pipe 2 with well head 1, and the lower end of orientation spool 4 passes through oil pipe and packer 6
Upper end connection；
The upper end of damper 11 is connect with the lower end of packer 6；
The upper end of screen casing 7 is connect by oil pipe with the lower end of damper 11, the upper end of the lower end of screen casing 7 and upper perforating gun 10
Connection, upper igniter head 8 are arranged inside screen casing 7；
Silk plug 15 is connect with the lower end of pressure relief device 14.
Upper perforating gun 10 is connected with lower perforating gun 13 by oil pipe, and the setting of down-firing head 12 is in upper perforating gun 10 and lower perforation
Inside the oil pipe that rifle 13 connects.
In the embodiment of the present invention, upper igniter head 8 and down-firing head 12 are all made of shockproof igniter.
The specific connection type present invention of upper igniter head 8 and down-firing head 12 and upper perforating gun 10 and lower perforating gun 13 is real
It applies example to be not particularly limited, using ordinary skill in the art means.
It can be on the oil pipe between orientation spool 4 and packer 6, on screen casing 7 and damper 11 and lower perforating gun 13
Between oil pipe on by-pass connection is respectively set, to connect upper pressure tube 5 and lower pressure tube 9.
Second aspect, the embodiment of the invention provides a kind of alternative layering perforation formation testing methods, and this method passes through upper
The alternative layering perforation formation testing tubing string stated is implemented, comprising the following steps:
Alternative is layered under perforation formation testing tubing string lower going-into-well, and sets packer 6 by step a.
Step b makes the pressure of oil jacket annulus reach the first default starting pressure or down-firing head 12 of igniter head 8
Second default starting pressure, makes perforating gun 10 or lower perforating gun 13 on 12 igniting blasting of igniter head 8 or down-firing head, right
Perhaps lower perforating gun 13 corresponding payzone progress perforation asks the upper perforating gun 10 of production acquisition or lower perforating gun 13 right to upper perforating gun 10
The yield data for the payzone answered.
Step c makes the pressure of oil jacket annulus reach the default starting pressure of the igniter head that do not light a fire in stepb, makes
The igniting of igniter head that step b does not light a fire, ignites corresponding perforating gun, to upper perforating gun 10 and the corresponding payzone of lower perforating gun 13 into
Row, which closes to adopt, asks production, the sum of the yield of perforating gun 10 and the corresponding payzone of lower perforating gun 13 in acquisition.
The sum of the yield obtained in step c is subtracted the production for the corresponding payzone of perforating gun ignited in stepb by step d
Amount, obtains the yield of the corresponding payzone of the perforating gun ignited in step c.
According to described above, the alternative layering perforation formation testing tubing string that is provided based on first aspect of the embodiment of the present invention
Alternative layering perforation formation testing method can be realized formation testing by layer using one-trip string, and may be selected to carry out the production of formation testing
The sequence of layer to effectively shorten the construction period of formation testing by layer, and reduces expense, and can more accurately obtain each production
The yield data of layer, has a very important significance the exploration and development of oil gas field.
Further, in alternative layering perforation formation testing method provided in an embodiment of the present invention, before step a, also
The following steps are included: determining that the upper corresponding payzone of perforating gun 10 and the corresponding payzone of lower perforating gun 13 carry out perforation formation testing first
Sequentially, it can specifically determine that first which payzone to carry out perforation to asks production according to geologic requirements.
Later, determine that the first default starting pressure and the size of the second default starting pressure are closed according to the sequence of perforation formation testing
System, if first carrying out perforation formation testing to the corresponding payzone of upper perforating gun 10, the first default starting pressure is less than the second default starting
Pressure, i.e., upper igniter head 8 is using default starting lesser igniter head of pressure；If first being penetrated to the corresponding payzone of lower perforating gun 13
Hole formation testing, then the first default starting pressure is greater than the second default starting pressure, i.e., upper igniter head 8 is larger using default starting pressure
Igniter head.
In addition, after packer 6 is set, further including the steps that testing sealing lattice, to guarantee subsequent point in the embodiment of the present invention
Layer formation testing is gone on smoothly.
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 (9)
1. a kind of alternative layering perforation formation testing tubing string, the tubing string are arranged in casing, which is characterized in that the tubing string packet
It includes:
Packer (6),
The upper igniter head (8) being arranged below the packer (6),
Upper perforating gun (10) below the upper igniter head (8) is set,
Down-firing head (12) below the upper perforating gun (10) is set,
Lower perforating gun (13) below the down-firing head (12) is set,
Upper end be connected to the oil jacket annulus being located above the packer (6), lower end and the upper igniter head (8) inside are connected to
Upper pressure tube (5)；
And the lower pressure tube that upper end is connected to the upper pressure tube (5), lower end and the down-firing head (12) inside are connected to
(9)；
The upper igniter head (8) can preset starting pressure down-firing first and ignite the upper perforating gun (10), the lower point
Duration and degree of heating (12) can preset starting pressure down-firing second and ignite the lower perforating gun (13)；
Described first default starting pressure is different with the described second default starting pressure.
2. alternative layering perforation formation testing tubing string according to claim 1, which is characterized in that ignite the upper point in the ban
When duration and degree of heating (8), the described first default starting pressure is less than the described second default starting pressure；The down-firing head is ignited in the ban
(12) when, the described first default starting pressure is greater than the described second default starting pressure.
3. alternative layering perforation formation testing tubing string according to claim 1, which is characterized in that the tubing string further include:
The upper end of orientation spool (4), the orientation spool (4) is connect by oil pipe with well head (1), the lower end of the orientation spool (4)
It is connect by oil pipe with the upper end of the packer (6).
4. alternative layering perforation formation testing tubing string according to claim 1, which is characterized in that the tubing string further include:
The upper end of damper (11), the damper (11) is connect with the lower end of the packer (6).
5. alternative layering perforation formation testing tubing string according to claim 4, which is characterized in that the tubing string further include:
The upper end of screen casing (7), the screen casing (7) is connect by oil pipe with the lower end of the damper (11), the lower end of the screen casing (7)
It is connect with the upper end of the upper perforating gun (10).
6. alternative layering perforation formation testing tubing string according to claim 1, which is characterized in that the tubing string further include:
It the pressure relief device (14) that is connect with the lower end of the lower perforating gun (13) and is connect with the lower end of the pressure relief device (14)
Silk plug (15).
7. described in any item alternative layering perforation formation testing tubing strings according to claim 1~6, which is characterized in that on described
Igniter head (8) and the down-firing head (12) are shockproof igniter.
8. a kind of alternative layering perforation formation testing method, which is characterized in that the method passes through any one of claim 1~7
The alternative layering perforation formation testing tubing string is implemented, comprising the following steps:
The alternative is layered under perforation formation testing tubing string lower going-into-well, and sets the packer (6) by step a；
Step b makes the pressure of oil jacket annulus reach the first default starting pressure or down-firing head (12) of igniter head (8)
Second default starting pressure, makes upper perforating gun described in the upper igniter head (8) or the down-firing head (12) igniting blasting
(10) perhaps the lower perforating gun (13) carries out the upper perforating gun (10) or the corresponding payzone of the lower perforating gun (13)
Perforation asks production, obtains the yield data of the upper perforating gun (10) or the corresponding payzone of the lower perforating gun (13)；
Step c makes the pressure of oil jacket annulus reach the default starting pressure of the igniter head that do not light a fire in stepb, makes in step b
Igniter head igniting that do not light a fire, ignites corresponding perforating gun, corresponding to the upper perforating gun (10) and the lower perforating gun (13)
Payzone close and adopt and ask productions, the sum of the yield of the acquisition upper perforating gun (10) and the corresponding payzone of the lower perforating gun (13)
Data；
The sum of the yield obtained in step c data are subtracted the production for the corresponding payzone of perforating gun ignited in stepb by step d
Data are measured, the yield data of the corresponding payzone of the perforating gun ignited in step c is obtained.
9. alternative layering perforation formation testing method according to claim 8, which is characterized in that before the step a,
The method also includes:
Determine that the corresponding payzone of the upper perforating gun (10) and the corresponding payzone of the lower perforating gun (13) carry out perforation formation testing
Sequentially；
Determine that the described first default starting pressure and described second presets the big of starting pressure according to the sequence of the perforation formation testing
Small relationship, if first carrying out perforation formation testing to the corresponding payzone of the upper perforating gun (10), the described first default starting pressure is small
In the described second default starting pressure, if first carrying out perforation formation testing to the corresponding payzone of the lower perforating gun (13), described the
One default starting pressure is greater than the described second default starting pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630415.0A CN109306857B (en) | 2017-07-28 | 2017-07-28 | Selective layering perforation oil testing tubular column and method |
Applications Claiming Priority (1)
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| CN110630225A (en) * | 2019-09-26 | 2019-12-31 | 中国石油天然气集团有限公司 | Same-layer meshing perforation method and device |
| CN112664178A (en) * | 2020-12-31 | 2021-04-16 | 核工业北京地质研究院 | Underground fixing device and method for drilling layered test sensor |
| CN116104451A (en) * | 2021-11-10 | 2023-05-12 | 中国石油天然气集团有限公司 | Time-delay graded detonating tube perforating device |
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| CN116104451A (en) * | 2021-11-10 | 2023-05-12 | 中国石油天然气集团有限公司 | Time-delay graded detonating tube perforating device |
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