CN109653714A - Multilayer formation testing tubing string and formation testing method - Google Patents
Multilayer formation testing tubing string and formation testing method Download PDFInfo
- Publication number
- CN109653714A CN109653714A CN201710943517.8A CN201710943517A CN109653714A CN 109653714 A CN109653714 A CN 109653714A CN 201710943517 A CN201710943517 A CN 201710943517A CN 109653714 A CN109653714 A CN 109653714A
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- China
- Prior art keywords
- voltage
- controlled electric
- electric switch
- switch valve
- formation testing
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Classifications
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- 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
- E21B43/14—Obtaining from a multiple-zone well
-
- 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
Abstract
The present invention provides a kind of multilayer formation testing tubing string and formation testing method, the multilayer formation testing tubing string includes perforation tubular column and test string, wherein the perforation tubular column includes the more than two perforating guns being arranged from top to bottom；The test string includes being arranged alternately from top to bottom and internal connection forms more than two packers and more than two voltage-controlled electric switch valves in channel；The voltage-controlled electric switch valve is configured as the opening when the pressure code in the channel of the test string is equal to the cracking pressure code of the voltage-controlled electric switch valve, closes when the pressure code in the channel of the test string is equal to the closing pressure code of the voltage-controlled electric switch valve；The cracking pressure code and closing pressure code of described two above voltage-controlled electric switch valves are different.Multilayer formation testing tubing string provided by the invention and formation testing method, one trip can carry out formation testing to two or more oil reservoirs of oil well.
Description
Technical field
The present invention relates to oil-gas mining technical field, in particular to a kind of multilayer 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 carries out formation testing to the payzone below oil well, then descend bridge plug or beat ash fill in will complete the payzone of formation testing with above it
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:
Formation testing by layer is carried out using existing method, when carrying out formation testing to each payzone, has been required to lower tubular column, is completed
Also needed after formation testing lower bridge plug or beat ash plug the payzone and the payzone above it are insulated, operation it is comparatively laborious, lead to oil well
Formation testing period it is long.
Summary of the invention
In view of this, the present invention provides a kind of multilayer formation testing tubing string and formation testing method, perforation tubular column and test next time is played
Tubing string can carry out formation testing to two or more oil reservoirs of oil well.
Specifically, including technical solution below:
On the one hand, the present invention provides a kind of multilayer formation testing tubing strings, including perforation tubular column and test string, wherein
The perforation tubular column includes the more than two perforating guns being arranged from top to bottom；
The test string includes being arranged alternately from top to bottom and internal connection forms more than two packers in channel
With more than two voltage-controlled electric switch valves；
The voltage-controlled electric switch valve is configured as when the pressure code in the channel of the test string is equal to described voltage-controlled
It opens when the cracking pressure code of electric switching valve, is opened when the pressure code in the channel of the test string is equal to the voltage-controlled electric
It is closed when closing the closing pressure code of valve；
The cracking pressure code and closing pressure code of described two above voltage-controlled electric switch valves are different.
Selectively, the perforation tubular column further includes igniter head, and described igniter head is penetrated by fuse cord with described in each
Hole rifle is connected.
Selectively, the perforation tubular column further includes the first oil pipe, the perforating gun of first oil pipe and the top
Upper end connection.
Selectively, the perforation tubular column further includes the first orientation spool, and first orientation spool is connected to described
Between one oil pipe and the perforating gun of the top.
Selectively, screen casing is connected between first orientation spool and the perforating gun of the top.
Selectively, the test string further includes the second oil pipe, the packer of second oil pipe and the top
Upper end connection.
Selectively, the test string further includes the second orientation spool, and second orientation spool is connected to described
Between two oil pipes and the packer of the top.
Selectively, circulating valve is connected between second orientation spool and the packer of the top.
Second aspect, the present invention also provides a kind of formation testing method, using multilayer formation testing tubing string described in any of the above embodiments,
The described method includes:
Step 1: perforation tubular column is lowered into oil well, make each perforating gun be aligned one of the oil well it is corresponding
Payzone；
Step 2: igniting each described perforating gun, each described perforating gun is made to carry out perforation in corresponding payzone；
Step 3: the perforation tubular column is taken out out of described oil well；
Step 4: test string is lowered into the oil well, each voltage-controlled electric switch valve is made to be directed at the oil well
A corresponding payzone；
Step 5: each packer is set；
Step 6: liquid is injected in the channel of Xiang Suoshu test string, makes the pressure code in the channel of the test string
For the cracking pressure code of a voltage-controlled electric switch valve, then the voltage-controlled electric switch valve is opened, the voltage-controlled electric switch valve
Oil gas in corresponding payzone is entered in the channel of the test string by the voltage-controlled electric switch valve, and the oil is discharged
Well；The pressure code for changing the pressure in the channel of the test string is the closing pressure code of the voltage-controlled electric switch valve, then should
Voltage-controlled electric switch valve is closed；
Step 7: continue to inject liquid into the channel of the test string, in the channel for changing the test string
Pressure code is the cracking pressure code of another voltage-controlled electric switch valve, then the voltage-controlled electric switch valve is opened, the voltage-controlled electricity
Oil gas in the dynamic corresponding payzone of switch valve is entered in the channel of the test string by the voltage-controlled electric switch valve, side by side
The oil well out；Change the closing pressure that the pressure code in the channel of the test string is the voltage-controlled electric switch valve again
Code, then the voltage-controlled electric switch valve is closed；
Step 8: step 7 is repeated, until the oil gas in all corresponding payzones of the voltage-controlled electric switch valve is arranged
The oil well out.
Selectively, the step 1 includes:
Perforation tubular column is lowered into oil well, the depth of the first orientation spool is determined using gamma position indicator, and then is made every
One perforating gun is directed at a corresponding payzone of the oil well.
Selectively, the step 4 includes:
Test string is lowered into the oil well, the depth of the second orientation spool is determined using gamma position indicator, in turn
Each voltage-controlled electric switch valve is set to be directed at a corresponding payzone of the oil well.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
Multilayer formation testing tubing string provided by the invention and formation testing method, by more than two perforations that perforation tubular column is arranged
Rifle, convenient for penetrating out more than two payzones respectively when igniting more than two perforating guns；By two that test string is arranged
Two adjacent payzones are insulated, avoid interfering with each other between payzone by above packer；Pass through setting test string
More than two voltage-controlled electric switch valves, convenient for the oil gas when opening each voltage-controlled electric switch valve, in corresponding payzone
It is entered in the channel of test string by voltage-controlled electric switch valve, and then oil well is discharged；It is more than two voltage-controlled by being arranged
The cracking pressure code and closing pressure code of electric switching valve are different, to can only open a voltage-controlled electric switch every time
Valve only carries out formation testing to a payzone, will not influence each other between payzone, guarantee the accuracy of formation testing by layer.Therefore, of the invention
The multilayer formation testing tubing string of offer, rise perforation tubular column and test string can carry out two or more oil reservoirs of oil well next time
Formation testing.
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 multilayer formation testing tubing string in one embodiment of the invention；
Fig. 2 is the scene figure when perforation tubular column provided using one embodiment of the invention is worked；
Fig. 3 is the scene figure when test string provided using one embodiment of the invention is worked.
Appended drawing reference in figure is respectively as follows:
A, perforation tubular column；
B, test string；
1, the first oil pipe；
2, the first orientation spool；
3, the first tubing nipple；
4, screen casing；
5, igniter head；
6, the first perforating gun；
7, the first interlayer gun；
8, the second perforating gun；
9, the second interlayer gun；
10, third perforating gun；
11, the first silk plug；
12, the second oil pipe；
13, the second orientation spool；
14, the second tubing nipple；
15, circulating valve；
16, the first packer；
17, third tubing nipple；
18, the first voltage-controlled electric switch valve；
19, the 4th tubing nipple；
20, the second packer；
21, the 5th tubing nipple；
22, the second voltage-controlled electric switch valve；
23, the 6th tubing nipple；
24, third packer；
25, the 7th tubing nipple；
26, third voltage-controlled electric switch valve；
27, the 8th tubing nipple；
28, the second 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.
One embodiment of the invention provides a kind of multilayer formation testing tubing string and formation testing method, including perforation tubular column and testing tube
Column, wherein perforation tubular column includes the more than two perforating guns being arranged from top to bottom；Test string include on to
Under be arranged alternately and internal connection forms more than two packers and more than two voltage-controlled electric switch valves in channel；It is voltage-controlled
Electric switching valve is configured as beating when the pressure code in the channel of test string is the cracking pressure code of voltage-controlled electric switch valve
It opens, is closed when the pressure code of the pressure in the channel of test string is the closing pressure code of voltage-controlled electric switch valve；Each
The corresponding cracking pressure code of voltage-controlled electric switch valve and closing pressure are different.
As shown in Figure 1, one embodiment of the invention is three with the quantity of perforating gun, packer and voltage-controlled electric switch valve
For be illustrated, however, the present invention is not limited thereto, in other embodiments, perforating gun, packer and voltage-controlled electric switch valve
Quantity can also be other.
Multilayer formation testing tubing string provided in this embodiment includes perforation tubular column A and test string B, wherein perforation tubular column A includes
The first perforating gun 6, the second perforating gun 8 and the third perforating gun 10 being arranged from top to bottom；
Test string B includes the first packer 16, the first voltage-controlled electricity that setting from top to bottom and internal connection form channel
Dynamic switch valve 18, the second packer 20, the second voltage-controlled electric switch valve 22, third packer 24 and third voltage-controlled electric switch valve
26；
Voltage-controlled electric switch valve is configured as being equal to voltage-controlled electric switch valve when the pressure code in the channel of test string
It opens when cracking pressure code, is closed when the pressure code in the channel of test string is equal to the closing pressure code of voltage-controlled electric switch valve
It closes；First voltage-controlled electric switch valve 18, the second voltage-controlled electric switch valve 22 and the corresponding unlatching of third voltage-controlled electric switch valve 26
Pressure code and closing pressure are different.
Above-mentioned pressure code is the pressure of a certain size continued for some time.Pressure code in the channel of test string etc.
In voltage-controlled electric switch valve cracking pressure code or close pressure code refer to test string channel in pressure value and it is lasting when
Between with cracking pressure code or close pressure code pressure value and the duration be equal.
The working principle with regard to multilayer formation testing tubing string provided in an embodiment of the present invention, which is given, below describes:
Perforation tubular column A is lowered into the predetermined depths in oil well first, as shown in Fig. 2, the first perforating gun 6 is made to be directed at first
Payzone, the second perforating gun 8 are directed at the second payzone, and third perforating gun 10 is directed at third payzone, and the first perforating gun 6 of ignition, second are penetrated
Hole rifle 8 and third perforating gun 10 penetrate the first perforating gun 6, the second perforating gun 8 and third perforating gun 10 in corresponding payzone
Hole later takes out perforation tubular column A out of oil well.
It is lowered into the predetermined depths in oil well to test string B, as shown in figure 3, keeping the first voltage-controlled electric switch valve 18 right
Quasi- first payzone, the second voltage-controlled electric switch valve 22 are directed at the second payzone, and third voltage-controlled electric switch valve 26 is directed at third payzone；
Set the first packer 16, the second packer 20 and third packer 24.
Inject liquid into the channel of test string B, the fluid pressure in control channel, in the channel for making test string B
Pressure code be the first voltage-controlled electric switch valve 18 cracking pressure code, then the first voltage-controlled electric switch valve 18 open, first produce
Oil gas in layer is entered in the channel of test string B by the first voltage-controlled electric switch valve 18, side by side producing well；When the first production
After layer formation testing, change the closing pressure code that the pressure code in the channel of test string B is the first voltage-controlled electric switch valve 18,
Then the first voltage-controlled electric switch valve 18 is closed.
Continue to inject liquid into the channel of test string B, the fluid pressure in control channel, makes leading to for test string B
Pressure code in road is the cracking pressure code of the second voltage-controlled electric switch valve 22, then the second voltage-controlled electric switch valve 22 is opened, the
Oil gas in two payzones is entered in the channel of test string B by the second voltage-controlled electric switch valve 22, and oil is discharged through well head
Well；After the second payzone formation testing, changing the pressure code in the channel of test string B is the second voltage-controlled electric switch valve 22
Pressure code is closed, then the second voltage-controlled electric switch valve 22 is closed.
Continue to inject liquid into the channel of test string B, the fluid pressure in control channel, makes leading to for test string B
Pressure code in road is the cracking pressure code of third voltage-controlled electric switch valve 26, then third voltage-controlled electric switch valve 26 is opened, the
Oil gas in three payzones is entered in the channel of test string B by third voltage-controlled electric switch valve 26, side by side producing well；When
After three payzone formation testings, change the closing pressure that the pressure code in the channel of test string B is third voltage-controlled electric switch valve 26
Power code, then third voltage-controlled electric switch valve 26 is closed.
It should be noted that the formation testing sequence of payzone is carried out in accordance with the order from top to bottom in above-mentioned working principle, but
The invention is not limited thereto, can carry out at random to the formation testing sequence of payzone.
In the present embodiment, in order to avoid the burr on the borehole wall of oil well damages packer, under into oil well
It, can be to the first payzone, the second payzone, the corresponding borehole section of third payzone and three packings in oil well before entering test string B
The setting position of device carries out scraping, to remove deburring.
Multilayer formation testing tubing string provided in an embodiment of the present invention is convenient for by more than two perforating guns of perforation tubular column A
More than two payzones are penetrated out respectively after igniting more than two perforating guns；By more than two packers of test string B,
Two adjacent payzones are insulated, avoid interfering with each other between payzone；By more than two pressures that test string B is arranged
Electric switching valve is controlled, convenient for when opening each voltage-controlled electric switch valve, the oil gas of corresponding payzone is opened by voltage-controlled electric
It closes valve to enter in the channel of test string B, and then oil well is discharged；By the unlatching pressure that each voltage-controlled electric switch valve is arranged
Power code and closing pressure code are all different, to can only open a voltage-controlled electric switch valve every time, are only carried out to a payzone
Formation testing will not influence each other between payzone, it is ensured that the accuracy of formation testing by layer.Therefore, multilayer formation testing pipe provided by the invention
Column, one trip can carry out formation testing to two or more oil reservoirs of oil well.
For the ease of igniting the first perforating gun 6, the second perforating gun 8 and third perforating gun 10, as shown in Figure 1, perforation tubular column A
It further include igniter head 5, igniter head 5 is arranged in the inner cavity of perforation tubular column A, is connected by fuse cord with each perforating gun.Tool
Body, as shown in Figure 1, the first perforating gun 6 is connect with igniter head 5, the first perforating gun 6 and the second perforating gun 8 pass through the first interlayer
Rifle 7 connects, and the second perforating gun 8 is connect with third perforating gun 10 by the second interlayer gun 9, is provided with connection in the first interlayer gun 7
The fuse cord of first perforating gun 6 and the second perforating gun 8 is provided with connection second in second perforating gun 8 and third perforating gun 10 and penetrates
The fuse cord of hole rifle 8 and third perforating gun 10.So set, when needing to ignite perforating gun, to the inner cavity cultellation of perforation tubular column A
Lighted torch makes igniter head light a fire, and then igniter head ignites the first perforating gun 6, the second perforating gun 8 and third perforating gun 10.
For the ease of perforation tubular column A is connect with tubing string, as shown in Figure 1, perforation tubular column A further includes the first oil pipe 1, first
Oil pipe 1 is connect with the upper end of i.e. the first perforating gun 6 of the perforating gun of the top.In this way, perforation tubular column A can by the first oil pipe 1 with
Tubing string connection.
In order to more accurately determine depth of the perforation tubular column A in well, it is ensured that each perforating gun is respectively aligned to oil well
A corresponding payzone, as shown in Figure 1, perforation tubular column A may also include the first orientation spool 2, the first orientation spool 2 is connected to
Between first oil pipe 1 and the first perforating gun 6.In this way, can determine that the first orientation spool 2 is located in well by gamma position indicator
Depth, and then determine depth of each perforating gun in well, so that the first perforating gun 6 be made to be directed at the first payzone, the second perforation
Rifle 8 is directed at the second payzone, and third perforating gun 10 is directed at third payzone.
In order to accurately determine that the first orientation spool 2 is located at the depth in well, as shown in Figure 1, the first orientation spool 2 and first
The first tubing nipple 3 is connected between perforating gun 6.Since 2 length of the first orientation spool is short less than the first oil pipe 1 and the first oil pipe
Section 3 when then gamma position indicator is by the first oil pipe 1, the first orientation spool 2 and the first tubing nipple 3, can change according to length and distinguish
Know the first orientation spool 2 out, and then can determine the depth that the first orientation spool 2 is located in well.
For the ease of test string B is connect with tubing string, as shown in Figure 1, test string B further includes the second oil pipe 12, the
Two oil pipes 12 are connect with the upper end of i.e. the first packer 16 of the packer of the top.In this way, test string B can pass through the second oil pipe
12 connect with tubing string.
In order to more accurately determine depth of the test string B in well, it is ensured that each voltage-controlled electric switch valve difference
It is directed at the corresponding payzone of oil well, as shown in Figure 1, test string B may also include the second orientation spool 13, the second orientation spool 13
It is connected between the second oil pipe 12 and the first packer 16.In this way, the second orientation spool 13 can be can determine by gamma position indicator
Depth in well, and then determine each depth of voltage-controlled electric switch valve in well, so that the first voltage-controlled electric be made to open
It closes valve 18 and is directed at the first payzone, the second voltage-controlled electric switch valve 22 is directed at the second payzone, and third voltage-controlled electric switch valve 26 is aligned
Third payzone.
In order to accurately determine that the second orientation spool 13 is located at the depth in well, as shown in Figure 1, the second orientation spool 13 and the
The second tubing nipple 14 is connected between one packer 16.Since 13 length of the second orientation spool is less than the second oil pipe 12 and second
Tubing nipple 14 can basis when then gamma position indicator is by the second oil pipe 12, the second orientation spool 13 and the second tubing nipple 14
Length variation picks out the second orientation spool 13, and then can determine the depth that the second tubing nipple 14 is located in well.
For the ease of production, as shown in Figure 1, being connected with screen casing 4 between the first tubing nipple 3 and the first perforating gun 6.It is penetrating
Kong Hou, the oil gas in payzone enter in the inner cavity of perforation tubular column A by the sieve pore on screen casing 4, and pass through well head discharge.
For the ease of carrying out well-flushing after formation testing, as shown in Figure 1, the second tubing nipple 14 and the first packer 16 it
Between be connected with circulating valve 15.In this way, opening circulating valve 15 after formation testing, injecting well-flushing into the channel of test string B
Liquid, then flushing fluid is entered in the annular space between test string B and the borehole wall of oil well by circulating valve 15, and is discharged through well head,
So as to which annular space is cleaned.
It is attached for the ease of adjacent packer, as shown in Figure 1, the first packer 16 and the first voltage-controlled electric switch
Valve 18 is connected by third tubing nipple 17, and the first voltage-controlled electric switch valve 18 and the second packer 20 pass through the 4th tubing nipple
19 connections, the second packer 20 are connect with the second voltage-controlled electric switch valve 22 by the 5th tubing nipple 21, the second voltage-controlled electric
Switch valve 22 is connect with third packer 24 by the 6th tubing nipple 23, third packer 24 and third voltage-controlled electric switch valve
26 are connected by the 7th tubing nipple 25.
In the present embodiment, as shown in Figure 1, in perforation tubular column A, the lower end of third perforating gun 10 is connected with the first silk plug
26 lower end of third voltage-controlled electric switch valve is connected with the second silk plug 28 in 11, test string B.First silk plug 11 and the second silk plug 28
By the lower end closed of perforation tubular column A and test string B.
It is connect for the ease of third voltage-controlled electric switch valve 26 with the second silk plug 28, as shown in Figure 1, third voltage-controlled electric is opened
It closes valve 26 and the second silk plug 28 is connected with the 8th tubing nipple 27.
Another embodiment of the present invention additionally provides a kind of formation testing method, using multilayer formation testing pipe provided by the above embodiment
Column, this method comprises:
Step 1: perforation tubular column A is lowered into oil well, makes a corresponding production of each perforating gun alignment oil well
Layer.
Specifically, after perforation tubular column A being lowered into oil well, the first orientation spool 2 can be determined by gamma position indicator
Depth, and the depth of the first orientation spool 2 is adjusted, and then the first perforating gun 6 is made to be directed at the first payzone, the alignment of the second perforating gun 8
Second payzone, third perforating gun 10 are directed at third payzone.
Step 2: igniting each perforating gun, each perforating gun is made to carry out perforation in corresponding payzone.
Specifically, to the inner cavity cultellation lighted torch of perforation tubular column A, igniter head 5 is made to light a fire, and then igniter head 5 is ignited first and penetrated
Hole rifle 6, the second perforating gun 8, third perforating gun 10.
Step 3: perforation tubular column A is taken out out of oil well.
Step 4: test string B is lowered into oil well, makes a production of each voltage-controlled electric switch valve alignment oil well
Layer.
Specifically, after test string B being lowered into oil well, it can determine that the second orientation spool 13 exists by gamma position indicator
Depth in well, and the depth of the second orientation spool 13 is adjusted, and then the first voltage-controlled electric switch valve 18 is made to be directed at the first payzone,
Second voltage-controlled electric switch valve 22 is directed at the second payzone, and third voltage-controlled electric switch valve 26 is directed at third payzone.
Step 5: each packer is set.
Packer can prevent from influencing each other between adjacent payzone, guarantee the accuracy of formation testing by layer.
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.
Step 6: injecting liquid into the channel of test string B, makes the pressure code of the pressure in the channel of test string B
For the cracking pressure code of one of voltage-controlled electric switch valve, then the voltage-controlled electric switch valve is opened, the voltage-controlled electric switch valve
Oil gas in corresponding payzone is entered in the channel of test string B by the voltage-controlled electric switch valve, side by side producing well；Change
The pressure code of pressure in the channel of test string B is the closing pressure code of the voltage-controlled electric switch valve, then the voltage-controlled electric is opened
Valve is closed to close.
Step 7: continuing to inject liquid into the channel of test string B, changes the pressure code in the channel of test string B
For the cracking pressure code of another voltage-controlled electric switch valve, then the voltage-controlled electric switch valve is opened, the voltage-controlled electric switch valve pair
The oil gas in payzone answered is entered in the channel of test string B by the voltage-controlled electric switch valve, side by side producing well；Change again
Become the pressure code in the channel of test string B as the closing pressure code of the voltage-controlled electric switch valve, then the voltage-controlled electric switch valve
It closes.
Step 8: step 7 is repeated, until oil is discharged in the oil gas in all corresponding payzones of voltage-controlled electric switch valve
Well.
It should be noted that the opening sequence of voltage-controlled electric switch valve can randomly choose in the present embodiment, can according to from
The sequence of top to bottm first opens the first voltage-controlled electric switch valve 18 to the first payzone formation testing, then opens the second voltage-controlled electric switch valve
22 pair of second payzone carries out formation testing, finally opens third voltage-controlled electric switch valve 26 and carries out formation testing to third payzone, can also be according to
Sequence from top to bottom carries out formation testing to three payzones, or first carries out formation testing to the second payzone, then to the first payzone and third
Payzone carries out formation testing.
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 (11)
1. a kind of multilayer formation testing tubing string, which is characterized in that including perforation tubular column and test string, wherein
The perforation tubular column includes the more than two perforating guns being arranged from top to bottom；
The test string includes being arranged alternately from top to bottom and internal connection forms more than two packers and two in channel
A above voltage-controlled electric switch valve；
The voltage-controlled electric switch valve is configured as being equal to the voltage-controlled electric when the pressure code in the channel of the test string
It is opened when the cracking pressure code of switch valve, when the pressure code in the channel of the test string is equal to the voltage-controlled electric switch valve
Closing pressure code when close；
The cracking pressure code and closing pressure code of described two above voltage-controlled electric switch valves are different.
2. multilayer formation testing tubing string according to claim 1, which is characterized in that the perforation tubular column further includes igniter head, institute
Igniter head is stated to be connected by fuse cord with perforating gun described in each.
3. multilayer formation testing tubing string according to claim 1, which is characterized in that the perforation tubular column further includes the first oil pipe,
The connection of the upper end of first oil pipe and the perforating gun of the top.
4. multilayer formation testing tubing string according to claim 3, which is characterized in that the perforation tubular column further includes that the first positioning is short
Section, first orientation spool are connected between first oil pipe and the perforating gun of the top.
5. multilayer formation testing tubing string according to claim 4, which is characterized in that the institute of first orientation spool and the top
It states and is connected with screen casing between perforating gun.
6. multilayer formation testing tubing string according to claim 1, which is characterized in that the test string further includes the second oil pipe,
The connection of the upper end of second oil pipe and the packer of the top.
7. multilayer formation testing tubing string according to claim 6, which is characterized in that the test string further includes that the second positioning is short
Section, second orientation spool are connected between second oil pipe and the packer of the top.
8. multilayer formation testing tubing string according to claim 7, which is characterized in that the institute of second orientation spool and the top
It states and is connected with circulating valve between packer.
9. a kind of formation testing method, which is characterized in that using multilayer formation testing tubing string, institute described in any item of claim 1-8
The method of stating includes:
Step 1: perforation tubular column is lowered into oil well, each perforating gun is made to be directed at a corresponding payzone of the oil well；
Step 2: igniting each described perforating gun, each described perforating gun is made to carry out perforation in corresponding payzone；
Step 3: the perforation tubular column is taken out out of described oil well；
Step 4: test string is lowered into the oil well, each voltage-controlled electric switch valve is made to be directed at the one of the oil well
A corresponding payzone；
Step 5: each packer is set；
Step 6: liquid is injected in the channel of Xiang Suoshu test string, makes the pressure code one in the channel of the test string
The cracking pressure code of a voltage-controlled electric switch valve, then the voltage-controlled electric switch valve is opened, and the voltage-controlled electric switch valve is corresponding
Payzone in oil gas entered in the channel of the test string by the voltage-controlled electric switch valve, and the oil well is discharged；
The pressure code for changing the pressure in the channel of the test string is the closing pressure code of the voltage-controlled electric switch valve, then this is voltage-controlled
Electric switching valve is closed；
Step 7: continue to inject liquid into the channel of the test string, change the pressure in the channel of the test string
Code is the cracking pressure code of another voltage-controlled electric switch valve, then the voltage-controlled electric switch valve is opened, which opens
The oil gas closed in the corresponding payzone of valve is entered in the channel of the test string by the voltage-controlled electric switch valve, and institute is discharged
State oil well；Change the closing pressure code that the pressure code in the channel of the test string is the voltage-controlled electric switch valve again, then
The voltage-controlled electric switch valve is closed；
Step 8: step 7 is repeated, until institute is discharged in the oil gas in all corresponding payzones of the voltage-controlled electric switch valve
State oil well.
10. formation testing method according to claim 9, which is characterized in that when using multilayer formation testing pipe as claimed in claim 4
When column, the step 1 includes:
Perforation tubular column is lowered into oil well, the depth of the first orientation spool is determined using gamma position indicator, and then makes each
Perforating gun is directed at a corresponding payzone of the oil well.
11. formation testing method according to claim 9, which is characterized in that when using multilayer formation testing pipe as claimed in claim 6
When column, the step 4 includes:
Test string is lowered into the oil well, the depth of the second orientation spool is determined using gamma position indicator, and then is made every
One voltage-controlled electric switch valve is directed at a corresponding payzone of the oil well.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856494A (en) * | 2021-02-04 | 2022-08-05 | 中国石油天然气股份有限公司 | Gas-water output profile testing method for coal bed gas combined production well |
| CN114856495A (en) * | 2021-02-04 | 2022-08-05 | 中国石油天然气股份有限公司 | Underground device for testing gas-water output profile of coal bed gas combined production well |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073474U (en) * | 1990-08-29 | 1991-03-20 | 大庆石油管理局试油试采公司 | Monitor on ground for measuring pressure of stratum |
| CN2682198Y (en) * | 2004-02-06 | 2005-03-02 | 吉林石油集团有限责任公司 | Apparatus for multiple-level successive perforating |
| US20060207764A1 (en) * | 2004-12-14 | 2006-09-21 | Schlumberger Technology Corporation | Testing, treating, or producing a multi-zone well |
| CN103410484A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Small-diameter tubular pump pump-passing depth checking perforating and pumping combined production method |
| CN104564022A (en) * | 2014-09-03 | 2015-04-29 | 北京石大博诚科技有限公司 | BOSW supermicro oil production test liquid construction method |
| CN104929590A (en) * | 2015-05-29 | 2015-09-23 | 中国石油天然气股份有限公司 | Downhole layer sealing device |
| CN204703871U (en) * | 2015-05-04 | 2015-10-14 | 中国石油天然气股份有限公司 | Across every under return caber perforation, test integration of operation tubing string |
| US20160003031A1 (en) * | 2013-11-22 | 2016-01-07 | Petrochina Company Limited | Intelligent test system and method for multi-segment fractured horizontal well |
| CN205638438U (en) * | 2016-05-06 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | A formula multilayer formation testing selectivity operation technology tubular column |
| CN205895214U (en) * | 2016-08-19 | 2017-01-18 | 西安物华巨能爆破器材有限责任公司 | Integration test rifle intermediate layer rifle for post |
| CN206158696U (en) * | 2016-10-21 | 2017-05-10 | 中国石油天然气股份有限公司 | Layered oil exploitation , Ka shui integration tubular column |
-
2017
- 2017-10-11 CN CN201710943517.8A patent/CN109653714A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2073474U (en) * | 1990-08-29 | 1991-03-20 | 大庆石油管理局试油试采公司 | Monitor on ground for measuring pressure of stratum |
| CN2682198Y (en) * | 2004-02-06 | 2005-03-02 | 吉林石油集团有限责任公司 | Apparatus for multiple-level successive perforating |
| US20060207764A1 (en) * | 2004-12-14 | 2006-09-21 | Schlumberger Technology Corporation | Testing, treating, or producing a multi-zone well |
| CN103410484A (en) * | 2013-08-07 | 2013-11-27 | 中国石油化工股份有限公司 | Small-diameter tubular pump pump-passing depth checking perforating and pumping combined production method |
| US20160003031A1 (en) * | 2013-11-22 | 2016-01-07 | Petrochina Company Limited | Intelligent test system and method for multi-segment fractured horizontal well |
| CN104564022A (en) * | 2014-09-03 | 2015-04-29 | 北京石大博诚科技有限公司 | BOSW supermicro oil production test liquid construction method |
| CN204703871U (en) * | 2015-05-04 | 2015-10-14 | 中国石油天然气股份有限公司 | Across every under return caber perforation, test integration of operation tubing string |
| CN104929590A (en) * | 2015-05-29 | 2015-09-23 | 中国石油天然气股份有限公司 | Downhole layer sealing device |
| CN205638438U (en) * | 2016-05-06 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | A formula multilayer formation testing selectivity operation technology tubular column |
| CN205895214U (en) * | 2016-08-19 | 2017-01-18 | 西安物华巨能爆破器材有限责任公司 | Integration test rifle intermediate layer rifle for post |
| CN206158696U (en) * | 2016-10-21 | 2017-05-10 | 中国石油天然气股份有限公司 | Layered oil exploitation , Ka shui integration tubular column |
Non-Patent Citations (1)
| Title |
|---|
| 侯良华等: "射孔测试排液联作技术在埕岛油田的应用", 《石油矿场机械》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856494A (en) * | 2021-02-04 | 2022-08-05 | 中国石油天然气股份有限公司 | Gas-water output profile testing method for coal bed gas combined production well |
| CN114856495A (en) * | 2021-02-04 | 2022-08-05 | 中国石油天然气股份有限公司 | Underground device for testing gas-water output profile of coal bed gas combined production well |
| CN114856495B (en) * | 2021-02-04 | 2023-12-26 | 中国石油天然气股份有限公司 | Underground device for testing gas water production profile of coal bed gas combined well |
| CN114856494B (en) * | 2021-02-04 | 2024-03-26 | 中国石油天然气股份有限公司 | Method for testing gas and water production profile of coal bed gas combined well |
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