CN111255420A - Oil well oil testing device and oil testing method - Google Patents
Oil well oil testing device and oil testing method Download PDFInfo
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- CN111255420A CN111255420A CN201811459172.XA CN201811459172A CN111255420A CN 111255420 A CN111255420 A CN 111255420A CN 201811459172 A CN201811459172 A CN 201811459172A CN 111255420 A CN111255420 A CN 111255420A
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- 239000003129 oil well Substances 0.000 title claims abstract description 51
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000010304 firing Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 210000002445 nipple Anatomy 0.000 claims description 7
- 238000010998 test method Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 126
- 238000004519 manufacturing process Methods 0.000 description 26
- 238000003860 storage Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/122—Multiple string packers
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- 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
- E21B43/11852—Ignition systems hydraulically actuated
-
- 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
- E21B43/14—Obtaining from a multiple-zone well
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses an oil well oil testing device and an oil testing method, and belongs to the field of oil exploitation. The device comprises a first packer, a first sieve tube, a perforation unit, a hydraulic pump, a second packer and a second sieve tube; the perforation unit comprises a first perforation unit and a second perforation unit; the first packer, the first sieve tube, the first perforation unit, the second packer, the second sieve tube and the second perforation unit are sequentially connected from top to bottom and then are communicated with an oil tube to form a tubular column; the hydraulic pump is positioned at the upper end of the first packer and is connected with the oil pipe; the first perforating unit comprises a first perforating gun and a perforating closing valve which are sequentially arranged from top to bottom, and a first ignition head is arranged on the first perforating gun; the second perforating unit comprises a second perforating gun, and a second ignition head is arranged on the second perforating gun; the first perforating gun is connected with the first sieve tube, the perforating closing valve is connected with the second packer, and the second perforating gun is connected with the second sieve tube. The invention simplifies the oil testing steps and improves the working efficiency.
Description
Technical Field
The invention belongs to the field of oil exploitation, and particularly relates to an oil well oil testing device and an oil testing method.
Background
In the oil-gas production process of an oil field, oil wells of different types and pressure systems have different oil production and gas production capacities, and numerical values such as productivity parameters, oil production characteristic parameters, pressure parameters and the like of the oil wells are obtained by testing the oil wells, so that the oil wells are comprehensively analyzed, and the oil storage and gas storage capacities of the oil wells are judged.
The oil testing device adopted by the related art comprises: the packer, the screen pipe joint and the perforation unit are sequentially connected from top to bottom. The packer, the screen pipe joint and the perforation unit are sequentially connected from top to bottom and then are installed on an oil pipe to form a pipe column, during operation, the pipe column is put into a well, the pipe column is sealed between the oil pipe and a casing annulus through the packer, a target layer is perforated through the perforation unit, the pipe column is taken out after perforation is completed, the pipe column is put into the well after the screen pipe joint is connected with the screen pipe, oil gas is discharged, the discharged oil gas is detected and analyzed, numerical values such as oil gas productivity parameters, oil production characteristic parameters and pressure parameters of the target layer are obtained, when next target layer oil testing is needed, the pipe column is put into the well again after the last target layer is sealed, the operation is repeated, and numerical values such as oil gas productivity parameters, oil production characteristic parameters and pressure parameters of the next target layer are obtained.
The inventors found that the related art has the following technical problems:
need take out the tubular column after testing oil to the target formation, go into the tubular column again in the well after being connected with the screen pipe through the screen pipe joint and just can discharge oil gas to just can carry out the oil testing operation on next target formation after carrying out the shutoff to first target formation, the tubular column need be played many times to the oil testing in-process, construction cycle is long, and the expense is high, and pollutes the oil storage reservoir easily.
Disclosure of Invention
The embodiment of the invention provides an oil well oil testing device and an oil testing method, which can solve the technical problems. The specific technical scheme is as follows:
in one aspect, an oil well testing device is provided, the device comprising: the device comprises a first packer, a first sieve tube, a perforation unit, a hydraulic pump, a second packer and a second sieve tube;
the perforation units comprise a first perforation unit and a second perforation unit;
the first packer, the first sieve tube, the first perforation unit, the second packer, the second sieve tube and the second perforation unit are sequentially connected from top to bottom and then are communicated with an oil pipe to form a pipe column; the hydraulic pump is positioned at the upper end of the first packer and is connected with the oil pipe;
the first perforating unit comprises a first perforating gun and a perforating closing valve which are sequentially arranged from top to bottom, and a first ignition head is arranged on the first perforating gun;
the second perforation unit comprises a second perforation gun, and a second ignition head is arranged on the second perforation gun;
the first perforating gun is connected with the first sieve tube, the perforating closing valve is connected with the second packer, and the second perforating gun is connected with the second sieve tube.
In an alternative embodiment, the apparatus further comprises: and the hydraulic pump is connected with the oil pipe through the short section.
In an optional embodiment, a first connecting oil pipe is arranged between the hydraulic pump and the pup joint, a second connecting oil pipe is arranged between the hydraulic pump and the first packer, and a third connecting oil pipe is arranged between the perforation closing valve and the second packer.
In an alternative embodiment, the first perforating gun is an ignition bar firing perforating gun and the second perforating gun is a pressure firing perforating gun.
In an alternative embodiment, a pressure gauge is provided within the hydraulic pump for measuring formation pressure.
In another aspect, there is provided a method for testing an oil well, the method being used in any one of the above oil well testing devices, the method comprising the steps of:
a, sequentially connecting a first packer, a first sieve tube, a first perforating gun, a perforating closing valve, a second packer, a second sieve tube and a second perforating gun from top to bottom, communicating the first packer, the second sieve tube and the second perforating gun with an oil pipe to form a pipe column, putting the pipe column into a well, aligning the first perforating gun with a first target layer, aligning the second perforating gun with a second target layer, and setting the pipe column in the well through the first packer and the second packer;
b, igniting a second ignition head, wherein the second perforating gun perforates the second target layer, a pump core of a hydraulic pump is thrown into the oil pipe, the pump core is located in a pump shell of the hydraulic pump, acting force is applied to the oil pipe through the hydraulic pump, oil gas in the second target layer returns to the ground after passing through the second sieve pipe through the first group of jetted holes, and the oil gas in the second target layer is obtained;
c, detecting and analyzing the oil gas of the second target layer obtained in the step b to obtain liquid amount and liquid data of the second target layer;
d, igniting a first ignition head, perforating the first target layer through the first perforating gun, simultaneously plugging the second target layer, putting a pump core of a hydraulic pump into the oil pipe, seating the pump core in a pump shell of the hydraulic pump, applying acting force into the oil pipe through the hydraulic pump, and returning oil gas of the first target layer to the ground after passing through a first sieve pipe through a second group of ejected holes to obtain the oil gas of the first target layer;
and e, detecting and analyzing the oil gas of the first target layer obtained in the step d to obtain the liquid amount and liquid data of the first target layer.
In an alternative embodiment, in the step b, the second ignition head is ignited by pressurizing an annular space between the oil pipe and the casing.
In an alternative embodiment, in the step d, the first ignition head is ignited by throwing an ignition rod into the oil pipe, and the second target layer is plugged by closing the perforation closing valve while perforating the first target layer through the first perforating gun.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
by arranging the hydraulic pump, external force is provided for the oil well with low self-blowing production capacity, and high oil yield of the oil well with low self-blowing production capacity is realized. The production cost is reduced while the production requirement is met. The first perforation unit and the second perforation unit are arranged, so that the perforation of two target layers in the well can be completed at one time, and the oil gas collection in the well can be realized by one-trip pipe column by arranging the first sieve pipe and the second sieve pipe; through setting up the perforation shut-off valve, close the perforation shut-off valve after applying the effort to the oil jacket annular space, avoided pulling out the tubular column when carrying out the perforation to a target zone, the trouble of shutoff last target zone.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an oil testing device according to an embodiment of the present invention.
The reference numerals denote:
1-a first packer, 2-a first screen,
3-perforating unit, 301-first perforating unit, 3011-first firing head, 3012-first perforating gun,
3013-perforation shut-off valve, 302-second perforation unit, 3021-second firing head, 3022-second perforating gun,
4-oil pipe, 5-hydraulic pump, 6-short section, 7-first connecting oil pipe, 8-second connecting oil pipe,
9-first destination, 10-second destination, 11-third connecting oil pipe, 12-second packer, 13-second sieve pipe.
Detailed Description
Unless defined otherwise, all technical terms used in the examples of the present invention have the same meaning as commonly understood by one of ordinary skill in the art. In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides an oil well oil testing device, as shown in the attached figure 1, the device comprises: the packer comprises a first packer 1, a first screen pipe 2, a perforation unit 3, a hydraulic pump 5, a second packer 12 and a second screen pipe 13.
The perforation unit 3 comprises a first perforation unit 301 and a second perforation unit 302.
The first packer 1, the first sieve tube 2, the first perforation unit 301, the second packer 12, the second sieve tube 13 and the second perforation unit 302 are sequentially connected from top to bottom and then communicated with the oil pipe 4 to form a pipe column. A hydraulic pump 5 is located at the upper end of the first packer 1 and is connected to the tubing 4.
The first perforation unit 301 comprises a first perforation gun 3012 and a perforation closing valve 3013 which are sequentially arranged from top to bottom, and a first ignition head 3011 is arranged on the first perforation gun 3012;
the second perforating unit 302 comprises a second perforating gun 3022, and a second firing head 3021 is arranged on the second perforating gun 3022.
The first perforating gun 3012 is connected to the first screen 2, the perforating shut-off valve 3013 is connected to the second packer 12, and the second perforating gun 3022 is connected to the second screen 13.
According to the oil well oil testing device provided by the embodiment of the invention, as shown in the attached drawing 1, the oil testing device is connected with an oil pipe 4 to form a pipe column, the pipe column is lowered into a target layer, the pipe column is sealed between an oil sleeve annulus formed by the oil pipe 4 and a sleeve through a first packer 1 and a second packer 12, the second ignition head 3021 is ignited by pressurizing the oil sleeve annulus, a second perforating gun 3022 is perforated to eject the target layer, acting force is applied to the target layer through a hydraulic pump 5, oil gas returns to a well head through a second sieve tube 13 under the action of the hydraulic pump 5, the oil gas returning to the well head is detected to obtain numerical values such as the productivity parameter and the oil production characteristic parameter of the target layer of the oil well, the comprehensive analysis is carried out on the oil well, and the oil storage capacity and the gas storage capacity of the oil well are judged. And when the oil testing of the next target layer is needed after the oil testing of one target layer is finished, taking out the pump core of the hydraulic pump 5 for cleaning. And (3) putting an ignition rod into the well, igniting the first ignition head 3011 by the ignition rod, perforating the first perforating gun 3012 to perforate a target layer, simultaneously applying pressure generated when the first perforating gun 3012 perforates to the perforating closing valve 3013, closing the perforating closing valve 3013, and sealing the previous target layer. And (3) throwing a pump core of a hydraulic pump 5 into the oil pipe 4, applying acting force to the next target layer by the hydraulic pump 5, and returning the oil gas to the wellhead through the first sieve pipe 2 under the action of the hydraulic pump 5. And (3) detecting the oil gas returned to the wellhead to obtain numerical values such as productivity parameters, oil production characteristic parameters and the like of the target layer of the oil well, comprehensively analyzing the oil well, and judging the oil storage capacity, the gas storage capacity and the like of the oil well.
The device provided by the embodiment of the invention at least has the following technical effects:
according to the oil well oil testing device provided by the embodiment of the invention, the hydraulic pump 5 is arranged to provide external force for the oil well with low self-injection production capacity, so that high oil yield of the oil well with low self-injection production capacity is realized. The production cost is reduced while the production requirement is met. The first perforation unit 301 and the second perforation unit 302 can complete perforation of two target layers in a well at one time, and oil and gas collection in the well can be realized by one trip of a pipe column through the arrangement of the first sieve pipe 2 and the second sieve pipe 13; by arranging the perforation shut-off valve 3013, the perforation shut-off valve 3013 is closed after acting force is applied to the oil casing annulus, and the trouble that a tubular column is pulled out and a previous target layer is blocked when the next target layer is perforated is avoided.
Optionally, as shown in fig. 1, the device provided by the embodiment of the present invention further includes a nipple 6, and the hydraulic pump 5 is connected to the oil pipe 4 through the nipple 6.
The oil wells with different stratum have different oil production capacities, and the oil wells with strong oil production capacities can flow out of the holes and return to the ground through the pipe columns when being jetted out of the holes, but for the oil wells with poor oil production capacities, the oil gas can not flow out of the holes spontaneously after the holes are jetted out of the target stratum, and the oil gas can flow out of the holes and return to the ground by means of external force, so that the hydraulic pump 5 is arranged at the upper end of the first packer 1, the hydraulic pump 5 is communicated with the oil pipe 4, and acting force is applied to the oil wells through the hydraulic pump 5 to enable the oil gas to flow out and return to the ground. The oil yield of the oil well with poor self-productivity is reduced, and the production cost is reduced.
The hydraulic pump 5 provided by the embodiment of the invention is characterized in that fluid is introduced into the hydraulic pump 5, negative pressure is formed in the hydraulic pump 5 through the flow of the fluid, the target layer of the injected hole is positive pressure, and crude oil in the target layer is pressed out of the oil pipe 4 to produce oil.
After the second objective layer 10 is penetrated, the hydraulic pump 5 is used for producing oil for the second objective layer 10, and after the oil production for the second objective layer 10 is finished, the hydraulic pump 5 is fished out and then the first objective layer 9 is perforated, so that the first objective layer 9 can be perforated and tested conveniently.
The short section 6 is arranged at the joint of the hydraulic pump 5 and the oil pipe 4 and used for controlling the distance between the hydraulic pump 5 and the wellhead of the oil well, the distance between the hydraulic pump 5 and the wellhead of the oil well can be adjusted, and the position of a pressure gauge on the hydraulic pump 5 is ensured. For example, the short joint 6 may be a positioning short joint, and the selected length of the positioning short joint is 0.5m, 1m, 1.5m, 2m, 2.5m, 3m, and the like.
Optionally, as shown in fig. 1, a first connecting oil pipe 7 is arranged between the hydraulic pump 5 and the nipple 6, a second connecting oil pipe 8 is arranged between the first packer 1 and the first screen pipe 2, and a third connecting oil pipe 11 is arranged between the first packer 1 and the first screen pipe 2.
The oil pipe 4 is connected with the device to form a pipe column, during operation, the pipe column is lowered into the well to a designed depth, perforation operation is carried out on a target layer, and it can be understood that the depth of the pipe column in the well needs to be adjusted after the pipe column is lowered into the well, so that the pipe column is aligned with the target layer to carry out perforation. In order to adjust the depth of the pipe column after the pipe column is put into the well, a first connecting oil pipe 7 is arranged between the hydraulic pump 5 and the nipple 6, a second connecting oil pipe 8 is arranged between the hydraulic pump and the first packer 1, and a third connecting oil pipe 11 is arranged between the first sieve pipe 2 and the first packer 1.
Optionally, the first perforating gun 3012 is an ignition bar fired perforating gun and the second perforating gun 3022 is a pressure fired perforating gun.
In operation, when acting force is applied to the oil casing annulus, and the pressure accumulation of the oil casing annulus reaches a certain amount, the second firing head 3021 is fired, and the second perforating gun 3022 is aligned with the target layer for perforation. In consideration of convenience in igniting the first ignition head 3011, when the first ignition head 3011 is ignited, an ignition rod is put into the well, the first ignition head 3011 is ignited, and the first perforating gun 3012 is directed to a target layer to perforate. The first firing head 3011 may also be fired by applying a force to the oil jacket annulus.
According to the oil well testing device provided by the embodiment of the invention, the perforation closing valve 3013 can be closed under the action of pressure. When the first target layer 9 is perforated, pressure ignition is performed, and the pressure required for igniting the first target layer 9 is smaller than the pressure at which the perforation shutoff valve 3013 is closed, so that the perforation shutoff valve 3013 is not affected when the first target layer 9 is pressure-ignited. After firing by the ignition rod, the pressure generated when the charge explodes is greater than the pressure required when the perforation shut-off valve 3013 is closed, and therefore, the perforation shut-off valve 3013 at this time is closed.
In the device provided by the embodiment of the invention, the perforation closing valve 3013 is a simple pressure control switch and can be closed only when the pressure reaches a certain degree. The sealing valve with a complex structure, a central pipe, a sliding sleeve, an outer barrel, a flow guide channel, a one-way locking mechanism and the like of an inner cavity of the sealing valve are prevented from being used for sealing the previous target layer in the related technology. The structure of the tool is simplified, the cost of the device is saved, and the operation efficiency is improved.
Meanwhile, the ignition mode of the device provided by the embodiment of the invention abandons the modes of ignition by electric detonation, an electric rod and the like in the related technology, adopts the ignition mode of ignition during ignition in the oil well testing process, simplifies the structure of the device, does not need to recover the ignition rod after ignition, and avoids the operation of recovering the ignition rod after ignition is finished in the electric ignition. The working efficiency is improved, and the cost of the device is reduced.
Optionally, a pressure gauge for measuring the formation pressure is provided in the hydraulic pump 5.
In order to obtain the formation pressure, a pressure gauge is installed above the hydraulic pump 5.
The oil well oil testing device provided by the embodiment of the invention can realize perforation of two target layers in an oil well, and can finish oil production of the target layers through the hydraulic pump 5 without a tubular column after perforation is finished. Compared with the device provided by the prior art, the oil testing device provided by the embodiment of the invention has a complex structure, can realize perforation and oil production of two layers of oil wells, reduces the cost of the device and improves the operation efficiency.
On the other hand, the embodiment of the invention also provides an oil well testing method, which is used for the oil well testing device and comprises the following steps:
And 2, igniting the second ignition head 3021, perforating the second target layer 10 by using a second perforating gun 3022, putting a pump core of the hydraulic pump 5 into the oil pipe 4, seating the pump core in a pump shell of the hydraulic pump 5, applying an acting force into the oil pipe 4 by using the hydraulic pump 5, allowing oil gas in the second target layer 10 to enter the second sieve pipe 201 through the first group of holes and then return to the ground, and obtaining the oil gas in the second target layer 10.
And 3, detecting and analyzing the oil gas of the second target layer 10 obtained in the step b to obtain liquid amount and liquid data of the second target layer 10.
And 4, igniting the first ignition head 3011, perforating the first target layer 9 by the first perforating gun 3012, plugging the second target layer 10, putting a pump core of the hydraulic pump 5 into the oil pipe 4, seating the pump core in a pump shell of the hydraulic pump 5, applying acting force into the oil pipe 4 by the hydraulic pump 5, and returning oil gas of the first target layer 9 to the ground after passing through the first sieve pipe 2 through the second group of holes to obtain the oil gas of the first target layer 9.
And 5, detecting and analyzing the oil gas of the first target layer 9 obtained in the step d to obtain liquid amount and liquid data of the first target layer 9.
According to the oil well oil testing method provided by the embodiment of the invention, after the second target layer 10 is tested, the tubular column does not need to be taken out, the first target layer 9 is tested, the perforation shut-off valve 3013 is closed through the impact effect of the first perforation gun 3012 on the perforation shut-off valve 3013, the second target layer 10 is further plugged, and the first target layer 9 is tested continuously. Meanwhile, according to the oil testing method provided by the embodiment of the invention, when the first target layer 9 and the second target layer 10 are required to produce oil and gas, a liquid discharge pipe column is not required to be independently put in, and one-time perforation and liquid discharge and oil testing operation is realized through the first sieve pipe 2 and the second sieve pipe 13 of the original pipe column, so that the construction procedures are reduced, the construction cost is reduced, the construction period is shortened, and the oil storage layer is not easily polluted.
Optionally, in step 2, by pressurizing the annular space between the oil pipe 4 and the casing, the annular pressure between the oil pipe 4 and the casing is gathered, and the second ignition head 3021 is ignited;
optionally, in step 4, the first ignition head 3011 is ignited by dropping an ignition rod into the well.
Optionally, in step 4, the perforation shut-off valve 3013 is closed under the pressure impact of the first perforating gun 3012, plugging the second destination layer 10.
It can be understood that the oil well testing method provided by the embodiment of the invention is directed to an oil well with low self-injection production capacity, therefore, when the second ignition head 3021 is ignited, the second perforating gun 3022 perforates the second target zone 10, a pump core of the hydraulic pump 5 is put into the wellhead of the oil well, the pump core is seated in a pump shell of the hydraulic pump 5, the hydraulic pump 5 is started through connection with a ground power supply, and the hydraulic pump 5 operates to return oil and gas in the first target zone 9 to the ground through the first screen pipe 2.
When the first ignition head 3011 is ignited, the first perforating gun 3012 perforates the first target layer 9, the pressure generated during the explosion of the perforating charge is greater than the pressure required when the perforating closing valve 3013 is closed, the second target layer 10 is blocked, a pump core of the hydraulic pump 5 is put into the wellhead of the oil well, the pump core is seated into a pump shell of the hydraulic pump 5, the hydraulic pump 5 is started through the connection with a ground power supply, and the hydraulic pump 5 works to enable oil and gas in the second target layer 10 to return to the ground through the second screen pipe 13.
It can be understood that after the oil production and gas production of the second destination layer 10 are finished, the pump core of the hydraulic pump 5 needs to be fished out and cleaned. And (5) fishing out the hydraulic pump 5, igniting the first target layer 9, and performing perforation operation. When the first target layer 9 is drained by the hydraulic pump 5, the pump core of the hydraulic pump 5 is thrown into the oil pipe 4 and is seated in the pump housing of the hydraulic pump 5 to perform work.
The above description is only an illustrative embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. An oil well testing apparatus, the apparatus comprising: the device comprises a first packer (1), a first sieve tube (2), a perforation unit (3), a hydraulic pump (5), a second packer (12) and a second sieve tube (13);
the perforation unit (3) comprises a first perforation unit (301) and a second perforation unit (302);
the first packer (1), the first sieve tube (2), the first perforation unit (301), the second packer (12), the second sieve tube (13) and the second perforation unit (302) are sequentially connected from top to bottom and then communicated with an oil pipe (4) to form a pipe column; the hydraulic pump (5) is positioned at the upper end of the first packer (1) and is connected with the oil pipe (4);
the first perforation unit (301) comprises a first perforation gun (3012) and a perforation closing valve (3013) which are sequentially arranged from top to bottom, and a first ignition head (3011) is arranged on the first perforation gun (3012);
the second perforation unit (302) comprises a second perforation gun (3022), and a second ignition head (3021) is arranged on the second perforation gun (3022);
the first perforating gun (3012) is connected to the first screen (2), the perforating shut-off valve (3013) is connected to the second packer (12), and the second perforating gun (3022) is connected to the second screen (13).
2. A well testing device according to claim 1, characterized in that said device further comprises a nipple (6), said hydraulic pump (5) being connected to said tubing (4) through said nipple (6).
3. An oil well testing device according to claim 2, characterized in that a first connecting oil pipe (7) is arranged between the hydraulic pump (5) and the nipple (6), a second connecting oil pipe (8) is arranged between the hydraulic pump (5) and the first packer (1), and a third connecting oil pipe (11) is arranged between the first sieve tube (2) and the first packer (1).
4. A well testing device according to claim 1 or 2, characterized in that said first perforating gun (3012) is a firing bar firing perforating gun and said second perforating gun (3022) is a pressure firing perforating gun.
5. A well testing device according to claim 2 or 3, characterized in that a pressure gauge for measuring the formation pressure is arranged in the hydraulic pump (5).
6. A method of testing an oil well, the method being used in an oil well testing apparatus according to any one of claims 1 to 5, the method comprising the steps of:
a, sequentially connecting a first packer (1), a first sieve tube (2), a first perforating gun (3012), a perforating closing valve (3013), a second packer (12), a second sieve tube (13) and a second perforating gun (3022) from top to bottom, then communicating the perforating closing valve with an oil pipe (4) to form a pipe column, putting the pipe column into a well, aligning the first perforating gun (3012) with a first target layer (9), aligning the second perforating gun (3022) with a second target layer (10), and setting the pipe column in the well through the first packer (102) and the second packer (12);
b, igniting a second ignition head (3021), wherein the second perforating gun (3022) perforates the second target layer (10), a pump core of a hydraulic pump (5) is thrown into the oil pipe (4), the pump core is seated in a pump shell of the hydraulic pump (5), an acting force is applied to the oil pipe (4) through the hydraulic pump (5), and oil gas in the second target layer (10) passes through a second sieve tube (13) through a first group of jetted holes and then returns to the ground, so that oil gas in the second target layer (10) is obtained;
c, detecting and analyzing the oil gas of the second target layer (10) obtained in the step b to obtain liquid amount and liquid data of the second target layer (10);
d, igniting a first ignition head (3011), perforating the first target layer (9) through the first perforating gun (3012) and simultaneously plugging the second target layer (10), throwing a pump core of a hydraulic pump (5) into the oil pipe (4), wherein the pump core is seated in a pump shell of the hydraulic pump (5), applying acting force into the oil pipe (4) through the hydraulic pump (5), and returning oil gas of the first target layer (9) to the ground after passing through a first sieve tube (2) through a second group of ejected holes to obtain the oil gas of the first target layer (9);
and e, detecting and analyzing the oil gas of the first target layer (9) obtained in the step d to obtain liquid amount and liquid data of the first target layer (9).
7. An oil well testing method according to claim 6, characterized in that in step b, the second firing head (3021) is ignited by pressurizing the annulus between the oil pipe (4) and the casing.
8. An oil well testing method according to claim 6, wherein in step d, said first firing head (3011) is fired by throwing a firing rod into said oil pipe (4), said first perforating gun (3012) perforates said first target layer (9) and said perforating shut-off valve (3013) is closed to seal said second target layer (10).
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