CN109555520A - The double-deck formation testing tubing string and formation testing method - Google Patents
The double-deck formation testing tubing string and formation testing method Download PDFInfo
- Publication number
- CN109555520A CN109555520A CN201710880059.8A CN201710880059A CN109555520A CN 109555520 A CN109555520 A CN 109555520A CN 201710880059 A CN201710880059 A CN 201710880059A CN 109555520 A CN109555520 A CN 109555520A
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- China
- Prior art keywords
- formation testing
- tubing string
- double
- perforation component
- screen casing
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/087—Well testing, e.g. testing for reservoir productivity or formation parameters
- E21B49/088—Well testing, e.g. testing for reservoir productivity or formation parameters combined with sampling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The present invention provides a kind of double-deck formation testing tubing string and formation testing methods, including sequentially connected oil pipe, the first screen casing, the first perforation component, hydraulic control valve, packer, the second screen casing and the second perforation component from top to bottom；The hydraulic control valve is configured as the closing when the first perforation component starts；When the hydraulic control valve is opened, the cavity between the oil pipe and second screen casing is connected to, and when the hydraulic control valve is closed, the cavity between the oil pipe and second screen casing is not connected to；In the casing that the double-deck formation testing tubing string is placed in oil well, and when the packer setting, the packer blocks the annular space between the double-deck formation testing tubing string and described sleeve pipe.The present invention can carry out formation testing to two payzones of oil well by one trip.
Description
Technical field
The present invention relates to oil-gas mining technical field, in particular to a kind of double-deck formation testing tubing string and formation testing method.
Background technique
It is mutual due to existing between the different payzones for producing liquid types, different pressures system in the oil well production process in oil field
It mutually interferes, each payzone contributes whole liquid-producing capacity different, it is therefore desirable to formation testing by layer is carried out to oil well, it is each small to obtain
The data such as production capacity, fluidity and the pressure build-up curve of layer, and then instruct the formulation of oil-gas mining scheme.
Currently, formation testing by layer by the way of returning on layer-by-layer formation testing, sealing, i.e., carries out formation testing to a payzone every time, first
Running string to below oil well payzone carry out formation testing, then tripping in bridge plug or ash plug by complete formation testing payzone and its above
Zonal isolation, running string carries out formation testing to the payzone above the payzone for completing formation testing again later, until the payzone of the top
Complete formation testing.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
When carrying out formation testing by layer using existing method, when carrying out formation testing to each payzone, it has been required to lower tubular column, it is complete
Lower bridge plug is also needed to insulate the payzone and the payzone above it at after formation testing, operation is comparatively laborious, leads to the formation testing of oil well
Period it is long.
Summary of the invention
In view of this, the present invention provides a kind of double-deck formation testing tubing string and formation testing method, it can be to oil by one trip
Two payzones of well carry out formation testing.
Specifically, including technical solution below:
In a first aspect, the present invention provides a kind of double-deck formation testing tubing string, including sequentially connected oil pipe, first from top to bottom
Screen casing, the first perforation component, hydraulic control valve, packer, the second screen casing and the second perforation component；
The hydraulic control valve is configured as the closing when the first perforation component starts；
When the hydraulic control valve is opened, the cavity between the oil pipe and second screen casing is connected to, when the liquid
When pressure control valve is closed, the cavity between the oil pipe and second screen casing is not connected to；
In the casing that the double-deck formation testing tubing string is placed in oil well, and when the packer setting, the packer is by institute
The annular space stated between the double-deck formation testing tubing string and described sleeve pipe blocks.
It selectively, further include orientation spool, the orientation spool is connected between the oil pipe and first screen casing.
It selectively, further include connected pipes, the connected pipes are connected to the orientation spool and first screen casing
Between.
Selectively, the first perforation component includes first igniter head and the first perforating gun, is configured as when described the
When one igniter head is lighted a fire, first perforating gun is ignited；
The second perforation component includes second igniter head and the second perforating gun, is configured as when second igniter head point
When fiery, second perforating gun is ignited.
Selectively, described second igniter head is hydraulic igniter head, be configured as when the double-deck formation testing tubing string with it is described
When the pressure in annular space between casing reaches the second preset value, second igniter head igniting.
Selectively, the lower end of the oil pipe and the upper end of the orientation spool, the orientation spool lower end with it is described
The upper end of connected pipes, the upper end of the lower end of the connected pipes and first screen casing, the lower end of first screen casing and institute
State the upper end of the first perforation component, the upper end of the lower end of the first perforation component and the hydraulic control valve, the hydraulic control
The lower end of valve processed and the upper end of the packer, the upper end of the lower end of the packer and second screen casing, second sieve
The lower end of pipe and the upper end of the second perforation component are connected through a screw thread.
Second aspect, the present invention also provides a kind of formation testing methods, which is characterized in that using described in any of the above embodiments double
Layer formation testing tubing string, which comprises
Step 1: the double-deck formation testing tubing string is lowered into the casing of oil well, and the first perforation component is made to be directed at the oil well
First payzone, the second perforation component are directed at the second payzone of the oil well；
Step 2: set packer；
Step 3: starting the second perforation component makes the second perforation component penetrate out second payzone, thus institute
State the sky that the liquid flowed out in the second payzone or gas are entered by the aperture on the second screen casing in the double-deck formation testing tubing string
Chamber is simultaneously discharged through oil pipe from the well head of the oil well；
Step 4: starting the first perforation component, the first perforation component is penetrated out to be generated when first payzone
Power closes hydraulic control valve, and the liquid or gas flowed out in first payzone enters institute by the aperture on the first screen casing
The cavity above the hydraulic control valve in the double-deck formation testing tubing string is stated, is then arranged through the oil pipe from the well head of the oil well
Out.
Selectively, starting the second perforation component, comprising:
Increase the pressure in the annular space between the double-deck formation testing tubing string and described sleeve pipe, second igniter head is made to light a fire, into
And described second igniter head ignites second perforating gun；
Starting the first perforation component, comprising:
Into the annular space between the double-deck formation testing tubing string and described sleeve pipe, caber is lighted a fire, and first igniter head is made to light a fire, into
And described first igniter head ignites first perforating gun.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
Bilayer formation testing tubing string provided in an embodiment of the present invention and formation testing method are penetrated by the way that the first perforation component and second is arranged
Aperture member, so that two payzones of oil well can be penetrated open by playing the double-deck formation testing tubing string next time；By the way that the second screen casing is arranged, it is convenient for second
The liquid or gas for the second payzone outflow that perforation component is penetrated out enter the double-deck formation testing tubing string by the aperture on the second screen casing
Cavity and through oil pipe from the well head of oil well be discharged；By the first screen casing of setting and packer, first is prevented to produce convenient for packer
Annular space of the gas or liquid that laminar flow goes out between the double-deck formation testing tubing string and casing flows downward, to guarantee the first perforation component
The liquid or gas for the first payzone outflow penetrated out are entered in the double-deck formation testing tubing string by the first screen casing；By the way that hydraulic control is arranged
Hydraulic control valve is closed when valve processed and the first perforation component of setting start, thus the hydraulic control valve in the starting of the first perforation component
It closes, convenient for preventing the gas entered in tubing string by the first screen casing or liquid empty to the lower section of tubing string when hydraulic control valve closing
Chamber flowing, and be discharged above oil pipe.As it can be seen that bilayer formation testing tubing string provided in an embodiment of the present invention, one trip
Formation testing is carried out to the double-deck payzone of oil well, efficiency is higher compared with the prior art, and the formation testing period of individual well is shorter.
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 a kind of structural schematic diagram of the double-deck formation testing tubing string in one embodiment of the invention；
Fig. 2 is scene figure when the double-deck formation testing tubing string provided using one embodiment of the invention is applied.
Appended drawing reference in figure is respectively as follows:
1, oil pipe；
2, orientation spool；
3, connected pipes；
4, the first screen casing；
5, the first perforation component；
501, first igniter head；
502, the first perforating gun；
6, hydraulic control valve；
7, packer；
8, the second screen casing；
9, the second perforation component；
901, second igniter head；
902, the second perforating gun.
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.
One embodiment of the invention provides a kind of double-deck formation testing tubing string, as shown in Figure 1, including sequentially connected from top to bottom
Oil pipe 1, the first screen casing 4, the first perforation component 5, hydraulic control valve 6, packer 7, the second screen casing 8 and the second perforation component 9；
Hydraulic control valve 6 is configured as the closing when the first perforation component 5 starts；
When hydraulic control valve 6 is opened, the cavity between oil pipe 1 and the second screen casing 8 is connected to, when hydraulic control valve 6 is closed
When, the cavity between oil pipe 1 and the second screen casing 8 is not connected to；
In the casing that the double-deck formation testing tubing string is placed in oil well, and when packer 7 is set, packer 7 is by the double-deck formation testing tubing string
Annular space between casing blocks.
The working principle with regard to the double-deck formation testing tubing string provided in an embodiment of the present invention, which is given, below describes:
As shown in Fig. 2, the double-deck formation testing tubing string is lowered into the casing of oil well first, the first perforation component is made to be directed at oil well
The first payzone, make the second perforation component alignment oil well the second payzone.
Set packer 7；
Start the second perforation component 9, so that the second perforation component 9 is penetrated out the second payzone of oil well, and then the second payzone passes through
The liquid or gas of perforation outflow are entered by the aperture on the second screen casing 8 in the cavity of the double-deck formation testing tubing string, and by oil
Pipe 1 is flowed out from well head；
Start the first perforation component 5 later, the power for making the first perforation component 5 penetrate out the first payzone of oil well acts on annular space
The hydraulic increase of liquid on interior liquid, and then in annular space simultaneously closes hydraulic control valve 6, thus flowed out in the first payzone
Liquid or gas enter the cavity of 6 top of hydraulic control valve in the double-deck formation testing tubing string by the aperture on the first screen casing 4, so
It is discharged by oil pipe 1 from the well head of oil well.
Bilayer formation testing tubing string provided in an embodiment of the present invention, by the way that the first perforation component 5 and the second perforation component 9 is arranged,
Two payzones of oil well can be penetrated open by playing the double-deck formation testing tubing string next time；By the way that the second screen casing 8 is arranged, it is convenient for the second perforation component 9
The liquid or gas for the second payzone outflow penetrated out enter the cavity of the double-deck formation testing tubing string simultaneously by the aperture on the second screen casing 8
It is discharged through oil pipe 1 from the well head of oil well；By the first screen casing 4 of setting and packer 8, the first payzone stream is prevented convenient for packer 8
Annular space of the gas or liquid out between the double-deck formation testing tubing string and casing flows downward, to guarantee that the first perforation component 5 is penetrated
The liquid or gas for the first payzone outflow opened are entered in the double-deck formation testing tubing string by the first screen casing 4；By the way that hydraulic control is arranged
Hydraulic control valve 6 is closed when valve 6 processed and the first perforation component 5 of setting start, thus the hydraulic control in the starting of the first perforation component 5
Valve 6 processed is closed, convenient for preventing the gas entered in tubing string by the first screen casing 4 or liquid to tubing string when the closing of hydraulic control valve 6
Lower cavity flowing, and from the top of oil pipe 1 be discharged.As it can be seen that bilayer formation testing tubing string provided in an embodiment of the present invention, rises next
Secondary tubing string can carry out formation testing to the double-deck payzone of oil well, and efficiency is higher compared with the prior art, and the formation testing period of individual well is shorter.
In order to more accurately determine depth of the double-deck formation testing tubing string in well, it is ensured that the first perforation component 5 and second is penetrated
Aperture member 9 is respectively aligned to the first payzone and the second payzone of oil well, as shown in Figure 1, to may also include positioning short for the double-deck formation testing tubing string
Section 2, orientation spool 2 is connected between oil pipe 1 and the first screen casing 4.In this way, orientation spool 2 can be can determine by gamma position indicator
Depth in well, and then determine the depth of the first perforation component 5 and the second perforation component 9 in well, so as to adjust bilayer
Depth of the formation testing tubing string in well, makes the first payzone of the first perforation component 5 alignment oil well, and the second perforation component 9 is directed at oil well
The second payzone.
In order to accurately determine that orientation spool 2 is located at the depth in well, as shown in Figure 1, the double-deck formation testing tubing string further includes connection
Oil pipe 3, connected pipes 3 are connected between orientation spool 2 and the first screen casing 4.Gamma position indicator by oil pipe 1, orientation spool 2 and
When connected pipes 3, since 2 length of orientation spool is less than oil pipe 1 and connected pipes 3, then it can be changed according to length and pick out positioning
Pipe nipple 2, and then can determine the depth that orientation spool 2 is located in well.
The implementation of first perforation component 5 and the second perforation component 9 can there are many, as one of embodiment,
As shown in Figure 1, the first perforation component 5 may include first igniter head 501 and the first perforating gun 502, it is configured as when the first igniting
When first 501 igniting, the first perforating gun 502 is ignited；
Second perforation component 9 includes second igniter head 901 and the second perforating gun 902, is configured as when second igniter head 901
When igniting, the second perforating gun 902 is ignited.
As shown in Figure 1, the upper end of first igniter head 501 is connect with the lower end of the first screen casing 4, lower end and the first perforating gun
502 upper end connection, the lower end of the first perforating gun 502 is connect with the upper end of hydraulic control valve 6.The upper end of second igniter head 901
It is connect with the lower end of the second screen casing 8, lower end is connect with the upper end of the second perforating gun 902.
As a kind of embodiment of second igniter head 901, second igniter head 901 is hydraulic igniter head, is configured as working as
When the pressure in annular space between the double-deck formation testing tubing string and casing reaches preset value, the igniting of second igniter head 901.In this way, increasing
The pressure in annular space between the double-deck formation testing tubing string and casing, to make second igniter head 901 light a fire, and then second igniter head
901 ignite the second perforating gun 902.Wherein, preset value can be related with the model of second igniter head 901, can select according to the actual situation
Select the model of suitable second igniter head 901.
When needing formation testing first layer, into oil pipe, caber is lighted a fire, and first igniter head 501 is lighted a fire, and then first igniter head
501 ignite the first perforating gun 502.
In the present embodiment, the packer of suitable type can be used in packer 7, such as washing well formula packer, guarantees packing
After device 7 is set, when increasing the pressure in the annular space between the double-deck formation testing tubing string and casing, pressure can pass through the well-flushing of packer 7
Channel is transmitted to second igniter head 901.
In order to guarantee to form the various components connection fastening of the double-deck formation testing tubing string, while easy to disassemble, the lower end of oil pipe 1 and
The upper end of orientation spool 2, the upper end of the lower end of orientation spool 2 and connected pipes 3, the lower end of connected pipes 3 and the first screen casing 4
Upper end, the lower end of the first screen casing 4 and the upper end of the first perforation component 5, the lower end of the first perforation component 5 and hydraulic control valve 6
Upper end, the second screen casing of upper end, the upper end of the lower end of hydraulic control valve 6 and packer 7, the lower end of packer 7 and the second screen casing 8
9 lower end and the upper end of the second perforation component 9 can be connected through a screw thread.
One embodiment of the invention additionally provides a kind of formation testing method, using double-deck formation testing tubing string described in above-described embodiment,
This method comprises:
Step 1: the double-deck formation testing tubing string is lowered into the casing of oil well, makes the first of the first perforation component alignment oil well
Payzone, the second perforation component are directed at the second payzone of oil well.
Specifically, after the double-deck formation testing tubing string being lowered into the casing of oil well, orientation spool is determined by gamma position indicator
Depth, adjust the depth of orientation spool, and then make the first payzone of the first perforation component alignment oil well, the second perforation component is equal
It is directed at the second payzone of oil well.
Step 2: set packer.
Different types of packer can be used in the embodiment of the present invention, the various types as known to those skilled in the art
Packer setting process, the present invention is no longer described in detail.
Blowout occurs for the liquid or gas that packer can prevent the second payzone from flowing out, while flowing out prevented also from the first payzone
Liquid or gas move downward and the first screen casing cannot be passed through and entered in the cavity of the double-deck formation testing tubing string.
Step 3: the second perforation component of starting makes the second perforation component penetrate out the second payzone, thus outflow in the second payzone
Liquid or gas the cavity in the double-deck formation testing tubing string and the well through oil pipe from oil well entered by the aperture on the second screen casing
Mouth discharge.
Second perforation component may include second igniter head and the second perforating gun, when second igniter head is hydraulic igniter head,
Increase the pressure in the annular space between the double-deck formation testing tubing string and casing, makes the pressure in the annular space between the double-deck formation testing tubing string and casing
Power increases, to make second igniter head light a fire, and then second igniter head ignites the second perforating gun.
Step 4: the first perforation component of starting, the first perforation component, which penetrates out the power generated when the first payzone, makes hydraulic control
Valve is closed, and then the liquid or gas that flow out in the first payzone are entered in the double-deck formation testing tubing string by the aperture on the first screen casing
Hydraulic control valve above cavity in, then through oil pipe from the well head of oil well be discharged.
First perforation component may include first igniter head and the first perforating gun.When needing formation testing first layer, thrown into oil pipe
Stick igniting, makes first igniter head light a fire, and then first igniter head ignites the first perforating gun.
In this application, it should be understood that term " first ", " second " etc. are used for description purposes only, and should not be understood as
Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic.
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 (8)
1. a kind of bilayer formation testing tubing string, which is characterized in that penetrated including sequentially connected oil pipe from top to bottom, the first screen casing, first
Aperture member, hydraulic control valve, packer, the second screen casing and the second perforation component；
The hydraulic control valve is configured as the closing when the first perforation component starts；
When the hydraulic control valve is opened, the cavity between the oil pipe and second screen casing is connected to, when the hydraulic control
When valve processed is closed, the cavity between the oil pipe and second screen casing is not connected to；
In the casing that the double-deck formation testing tubing string is placed in oil well, and when the packer setting, the packer will be described double
Annular space between layer formation testing tubing string and described sleeve pipe blocks.
2. bilayer formation testing tubing string according to claim 1, which is characterized in that it further include orientation spool, the orientation spool
It is connected between the oil pipe and first screen casing.
3. bilayer formation testing tubing string according to claim 2, which is characterized in that it further include connected pipes, the connected pipes
It is connected between the orientation spool and first screen casing.
4. bilayer formation testing tubing string according to claim 1, which is characterized in that the first perforation component includes the first igniting
Head and the first perforating gun are configured as igniting first perforating gun when described first igniter head is lighted a fire；
The second perforation component includes second igniter head and the second perforating gun, is configured as lighting a fire when described second igniter head
When, ignite second perforating gun.
5. bilayer formation testing tubing string according to claim 4, which is characterized in that described second igniter head is hydraulic igniter head,
It is configured as when the pressure in the annular space between the double-deck formation testing tubing string and described sleeve pipe reaches the second preset value, described the
The igniting of two igniter head.
6. bilayer formation testing tubing string according to claim 3, which is characterized in that the lower end of the oil pipe and the orientation spool
Upper end, the orientation spool lower end and the upper ends of the connected pipes, the lower end of the connected pipes and first sieve
The upper end of pipe, the lower end of first screen casing and the upper end of the first perforation component, the first perforation component lower end with
The upper end of the hydraulic control valve, the lower end of the hydraulic control valve and the upper end of the packer, the packer lower end
Connected by screw thread with the upper end of the upper end of second screen casing, the lower end of second screen casing and the second perforation component
It connects.
7. a kind of formation testing method, which is characterized in that using the double-deck formation testing tubing string, institute described in any item of claim 1-6
The method of stating includes:
Step 1: the double-deck formation testing tubing string is lowered into the casing of oil well, and the first perforation component is made to be directed at the first of the oil well
Payzone, the second perforation component are directed at the second payzone of the oil well；
Step 2: set packer；
Step 3: starting the second perforation component makes the second perforation component penetrate out second payzone, thus described the
The liquid or gas flowed out in two payzones enters the cavity in the double-deck formation testing tubing string simultaneously by the aperture on the second screen casing
It is discharged through oil pipe from the well head of the oil well；
Step 4: starting the first perforation component, the first perforation component, which penetrates out the power generated when first payzone, to be made
Hydraulic control valve is closed, and the liquid or gas flowed out in first payzone is entered described double by the aperture on the first screen casing
The cavity above the hydraulic control valve in layer formation testing tubing string, is then discharged through the oil pipe from the well head of the oil well.
8. formation testing method according to claim 7, which is characterized in that when using the double-deck formation testing pipe described in claim 5
When column, starting the second perforation component, comprising:
Increase the pressure in the annular space between the double-deck formation testing tubing string and described sleeve pipe, so that second igniter head is lighted a fire, Jin Ersuo
It states second igniter head and ignites second perforating gun；
Starting the first perforation component, comprising:
The caber igniting into the double-deck formation testing tubing string oil pipe, makes first igniter head light a fire, and then described first igniter head is ignited
First perforating gun.
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| CN201710880059.8A CN109555520A (en) | 2017-09-26 | 2017-09-26 | The double-deck formation testing tubing string and formation testing method |
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| CN201710880059.8A CN109555520A (en) | 2017-09-26 | 2017-09-26 | The double-deck formation testing tubing string and formation testing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450591A (en) * | 2022-09-13 | 2022-12-09 | 中石化石油工程技术服务有限公司 | Marine perforation apparatus and method |
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