CN108180014A - The monitoring device of shaft bottom information and the method for monitoring well bottom information - Google Patents
The monitoring device of shaft bottom information and the method for monitoring well bottom information Download PDFInfo
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- CN108180014A CN108180014A CN201810111426.2A CN201810111426A CN108180014A CN 108180014 A CN108180014 A CN 108180014A CN 201810111426 A CN201810111426 A CN 201810111426A CN 108180014 A CN108180014 A CN 108180014A
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- guide hole
- housing
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012806 monitoring device Methods 0.000 title claims abstract description 22
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 53
- 238000003860 storage Methods 0.000 claims abstract description 41
- 239000002904 solvent Substances 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 5
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 4
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 4
- 230000005055 memory storage Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 241000370738 Chlorion Species 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000638 stimulation Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 description 19
- 230000008569 process Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000007769 metal material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a kind of methods of the monitoring device and monitoring well bottom information of shaft bottom information, belong to stimulation technology field.The monitoring device includes：Downhole tool and ground storage device, downhole tool include can dissolve housing, adhering module, power module, data obtaining module, data processor, memory and data transmission module.Power module, data obtaining module, data processor, memory and data transmission module are bonded and wrapped up by adhering module by the present invention, and can dissolve housing in the outer layer covers of adhering module.When the downhole tool is located at shaft bottom, by data obtaining module detection along the first pressure guide hole and the shaft bottom information of the second pressure guide hole transmission, and store to memory.After the completion of reservoir reconstruction, when the downhole tool for having dissolved dissolvable housing is located at ground, ground storage device obtains the shaft bottom information stored in memory by data transmission module, avoids the influence because of fracturing string, reduces the reservoir reconstruction of extensive huge discharge.
Description
Technical field
The present invention relates to stimulation technology field, the monitoring device of more particularly to a kind of shaft bottom information and monitoring well bottom letter
The method of breath.
Background technology
By oil/gas well in the recovery process of reservoir, can in order to improve the production efficiency of the reservoir and recovery ratio
After perforating job is completed to the oil/gas well, to implement to be transformed to the reservoir based on preforation tunnel, to increase oil gas in the reservoir
Migration pathway.During transformation is implemented to reservoir, can by the fracturing string of the oil/gas well well head, using high pressure,
The mode of huge discharge injection, high viscosity pressure is squeezed into the intrinsic fracture of the reservoir by the pit shaft and preforation tunnel of the oil/gas well
Liquid is split, and then intrinsic fracture is made to generate expansion by fracturing fluid, while the brittle rock in the reservoir is made to generate shearing slip, with
Realize the transformation to the reservoir.
Since the corresponding shaft bottom information of the reservoir is to optimizing the improvement and design in reservoir later stage, explanation and fitting man-made fracture
Length predicts the reservoir permeability and evaluates the correctional effect of the reservoir and is respectively provided with important directive significance, therefore, right
In the transformation process of the reservoir, the corresponding shaft bottom information of the reservoir can be obtained.In the relevant technologies, passing through bridge plug and perforating gun
Oil/gas well completion is set respectively and perforation after, tripping in lower end is provided with the fracturing string of sensor to perforation in the oil/gas well
At eyelet, in order to during transformation is implemented to the corresponding reservoir of the oil/gas well based on fracturing string, pass through the biography of setting
Sensor monitors the corresponding shaft bottom information of the reservoir.After the completion of to the reservoir fracturing, the fracturing string is above carried to well head, so as to real
The reading of existing shaft bottom information.
However, when obtaining the corresponding shaft bottom information of the reservoir, due to needing the tripping in fracturing string in oil/gas well, so as to
Cause to be restricted the construction parameters such as discharge capacity and pump-in pressure that are pumped into during the reservoir reconstruction, be not suitable for advising greatly
Mould, huge discharge reservoir reconstruction in apply.
Invention content
In order to solve to reduce extensive, huge discharge storage because of the limitation of the caliber of fracturing string during reservoir reconstruction
The problem of transformation efficiency of layer transformation, the present invention provides a kind of monitoring device of shaft bottom information and the sides of monitoring well bottom information
Method.The technical solution is as follows：
In a first aspect, providing a kind of monitoring device of shaft bottom information, the monitoring device includes：Downhole tool and ground
Storage device, the downhole tool include can dissolve housing, adhering module, power module, data obtaining module, data processing
Device, memory and data transmission module；
The adhering module for bond and wrap up the power module, described information acquisition module, the data processing
Device, the memory and the data transmission module, the dissolvable housing are wrapped in the outside of the adhering module, it is described can
Dissolving housing can be dissolved by designated solvent, be provided with the first pressure guide hole in the adhering module, on the dissolvable housing
The second pressure guide hole is provided with, second pressure guide hole is connected by the test side of first pressure guide hole and described information acquisition module
It is logical, to detect shaft bottom information；
The power module respectively with described information acquisition module, the data processor, the memory and the number
Be electrically connected according to transmission module, described information acquisition module is electrically connected with the data processor, the data processor with it is described
Memory is electrically connected, and the memory is electrically connected with the data transmission module, with by the data processor to the letter
The shaft bottom information that breath acquisition module detects is stored after being handled into the memory；
When the downhole tool for having dissolved the dissolvable housing is located at ground, the ground storage device and the data
Transmission module connects, to obtain the shaft bottom information stored in the memory by the data transmission module.
Optionally, the dissolvable housing is almag housing, and the designated solvent is to contain magnesium ion in oil/gas well
Drain is returned with chlorion.
Optionally, sealer is provided in first pressure guide hole and second pressure guide hole, the sealer has logical
Gas characteristic, and for preventing first pressure guide hole and the second pilot hole plug.
Optionally, pilot slot is provided in the adhering module, is provided on the dissolvable housing at least one described
Second pressure guide hole, at least one second pressure guide hole are connected by the pilot slot with first pressure guide hole respectively.
Optionally, at least one second pressure guide hole is uniformly distributed in the outer surface of the dissolvable housing.
Optionally, the sealer is provided in the pilot slot, the sealer is used to prevent the pilot slot from blocking.
Optionally, charging interface is provided in the adhering module, the charging interface is electrically connected with the power module,
The charging interface is used to charge for the power module.
Optionally, the adhering module and the dissolvable housing are chondritic.
Optionally, the data transmission module is RS232 data-interfaces or RS484 interfaces.
Optionally, described information acquisition module includes pressure sensor and temperature sensor.
Second aspect provides a kind of method of the monitoring well bottom information during reservoir reconstruction, the method includes：
During the reservoir reconstruction when the downhole tool is located at predeterminated position, based on described information acquisition module
Detect shaft bottom information；
The shaft bottom information that described information acquisition module detects is handled, and deposit place to institute by the data processor
State memory；
When the downhole tool that the dissolvable housing has been dissolved by the designated solvent is located at ground, the ground storage
Equipment obtains the shaft bottom information of the memory storage by the data transmission module.
The advantageous effect that technical solution provided by the invention is brought is：The present invention is by by downhole tool tripping in oil/gas well
Inside pit shaft, later, fracturing fluid, realization pair are injected in a manner of high-pressure large-displacement into corresponding reservoir along the casing of oil/gas well
The transformation of the reservoir.In the transformation process of the reservoir, power module is respectively data obtaining module, data processor, storage
Device and data transmission module provide power supply, with by data obtaining module, along the first pressure guide hole and the second pressure guide hole, detection should in real time
The corresponding shaft bottom information of reservoir, and the shaft bottom after data obtaining module gets shaft bottom information by data processor to detection
Information is handled, and then deposits disposal reservoir.After the completion of to the reservoir reconstruction, in the underground work for having dissolved dissolvable housing
When tool is located at ground, ground storage device obtains the shaft bottom information stored in memory by data transmission module, is somebody's turn to do with realizing
The monitoring of the corresponding shaft bottom information of reservoir is avoided in oil/gas well after tripping in fracturing string because the caliber of fracturing string limits nothing
Method realizes the reservoir reconstruction of extensive huge discharge.
Description of the drawings
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, the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structure diagram of the monitoring device of shaft bottom information provided in an embodiment of the present invention；
Fig. 2 is a kind of cross-sectional view of downhole tool provided in an embodiment of the present invention；
Fig. 3 is a kind of structure diagram of adhering module provided in an embodiment of the present invention；
Fig. 4 is a kind of flow of the method for monitoring well bottom information in the transformation process of reservoir provided in an embodiment of the present invention
Structure diagram.
1：Downhole tool；2：Ground storage device；3：It can dissolve housing；31：Second pressure guide hole；4：Adhering module；41：The
One pressure guide hole；42：Charging interface；43：Pilot slot；5：Power module；6：Data obtaining module；7：Data processor；8：Storage
Device；9：Data transmission module；10：Filter circuit.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structure diagram of the monitoring device of shaft bottom information provided in an embodiment of the present invention.It, should referring to Fig. 1
Monitoring device includes：Downhole tool 1 and ground storage device 2.Fig. 2 is a kind of downhole tool 1 provided in an embodiment of the present invention
Cross-sectional view, referring to Fig. 2, downhole tool 1 includes can dissolve housing 3, adhering module 4, power module 5, acquisition of information
Module 6, data processor 7, memory 8 and data transmission module 9, adhering module 4 is for bonding and wrapping up power module 5, letter
Acquisition module 6, data processor 7, memory 8 and data transmission module 9 are ceased, housing 3 is can dissolve and is wrapped in the outer of adhering module 4
Portion, can dissolve housing 3 can be dissolved by designated solvent, and the first pressure guide hole 41 is provided in adhering module 4, can dissolve housing 3
On be provided with the second pressure guide hole 31, the second pressure guide hole 31 is connected by the first pressure guide hole 41 with the test side of data obtaining module 6,
To detect shaft bottom information, power module 5 respectively with data obtaining module 6, data processor 7, memory 8 and data transmission module
9 electrical connections, data obtaining module 6 is electrically connected with data processor 7, and data processor 7 is electrically connected with memory 8, memory 8 and
Data transmission module 9 is electrically connected, to be handled by data processor 7 the shaft bottom information that data obtaining module 6 detects
After store into memory 8.When the downhole tool 1 for having dissolved dissolvable housing 3 is located at ground, ground storage device 2 and number
It is connected according to transmission module 9, to obtain the shaft bottom information stored in memory 8 by data transmission module 9.
Wherein, power module 5 can be by least one piece of dry cell batteries at least one piece of dry cell can be in parallel for this, also may be used
With series connection, certainly at least one piece of dry cell can also be divided into several groups, every group connected after this several groups carry out again
Parallel connection, it is not limited in the embodiment of the present invention.Data processor 7 can be A/D (Analog/Digital, analog/digital)
Converter, it is of course also possible to be other conversion circuits, as long as can the electric signal that data obtaining module 6 detects be converted to number
Word signal, it is not limited in the embodiment of the present invention.Memory 8 can be storage chip, or RAM card, as long as
It can realize the storage of shaft bottom information.Ground storage device 9 can be mobile hard disk, or laptop or platform
Formula computer etc., as long as the storage to shaft bottom information can be realized.
Be respectively completed by bridge plug and perforating gun to oil/gas well set and perforation after, can be by 1 tripping in of downhole tool
Inside the pit shaft of oil/gas well, and downhole tool 1 is sent to the position of bridge plug in a manner of pumping the wellhead equipment of the oil/gas well
It puts.Later, fracturing fluid is injected into the corresponding reservoir of the oil/gas well along the eyelet of the casing of the oil/gas well, perforation, realized to this
The transformation of reservoir.In the transformation process of the reservoir, power module 5 is respectively data obtaining module 6, data processor 7, storage
Device 8 and data transmission module 9 provide power supply, with real along the first pressure guide hole 41 and the second pressure guide hole 31 by data obtaining module 6
When detect the corresponding shaft bottom information of the reservoir, and right by data processor 7 after data obtaining module 6 gets shaft bottom information
The shaft bottom information of detection is handled, and then deposits disposal reservoir 8.After the completion of to the reservoir reconstruction, the row of returning in oil/gas well
Liquid is dissolved to can dissolve housing 3, and can dissolve downhole tool 1 after housing 3 dissolves can drain into returning for well head with being returned in oil/gas well
Drain, which is returned, drains into ground.When the downhole tool 1 for having dissolved dissolvable housing 3 is located at ground, ground storage device 2 passes through data
Transmission module 9 obtains the shaft bottom information stored in memory 8, to realize the monitoring of the corresponding shaft bottom information of the reservoir.
Can dissolve housing 3 can be a kind of chondritic being fabricated to using soluble metal material, the soluble metal
Material has the characteristic of high-temperature-resistant high-pressure-resistant, and phenomena such as housing 3 deforms is can dissolve to avoid in the transformation process to reservoir,
Meanwhile the soluble metal material can be dissolved completely in designated solvent, in order to after the completion of to reservoir reconstruction by this
Dissolving of the drain realization to dissolvable housing 3 is returned in oil/gas well.Shell is can dissolve for example, can dissolve when housing 3 is chondritic
The diameter of body 3 is greater than or equal to 25 millimeters, and the maximum temperature which can bear is 150 degrees Celsius, maximal pressure
Power is 100 megapascal.Certainly, the shape that can dissolve housing 3 may be ellipsoid assembling structure, as long as in downhole tool 1 positioned at bridge
It when at the position of plug, can combine closely with bridge plug, partition is realized to the reservoir more than bridge plug and below bridge plug to realize.
Wherein, can dissolve housing 3 can be using housing made of almag, at this point, can dissolve 3 corresponding finger of housing
It can be the production liquid containing magnesium ion and chlorion in oil/gas well to determine solvent.Certainly, can dissolve housing 3 can also use macromolecule
Metal material is made, as long as can be dissolved in designated solvent, it is not limited in the embodiment of the present invention.
Referring to Fig. 3, adhering module 4 can be the chondritic being fabricated to using epoxide resin material.The epoxy resin material
Characteristic of the material with high-temperature-resistant high-pressure-resistant, during in order under high temperature and high pressure environment, adhering module 4 will not deform, simultaneously
The epoxide resin material has the small characteristic of density, can be in oil/gas well in order to after dissolvable housing 3 dissolves
It returns drain and returns and drain into ground.For example, the diameter of adhering module 4 is less than or equal to 20 millimeters when adhering module 4 is chondritic, it should
The maximum temperature that epoxide resin material can be born is 150 degrees Celsius, and maximum pressure is 100 megapascal.Certainly, adhering module 4 also may be used
Hexahedron structure or octahedral structure are thought, as long as adhering module 4 can be realized to power module 5, data obtaining module 6, number
According to the sealing of processor 7, memory 8 and data transmission module 9, to avoid after the dissolving of dissolvable housing 3, power module
5th, data obtaining module 6, data processor 7, memory 8 or data transmission module 9 are exposed in the liquid of the oil/gas well, burn out
Downhole tool 1.
Power module 5, data obtaining module 6, data processor 7, memory 8 and data are being passed by adhering module 4
After defeated module 9 is sealed, since power module 5 can be the power supplys such as dry cell, in order to avoid being used in the electricity of power module 5
After to the greatest extent, cause the waste of downhole tool 1, referring to Fig. 3, charging interface 42 can be provided in adhering module 4, charging interface 42 with
Power module 5 is electrically connected, and charging interface 42 is used to charge for power module 5.It is located at ground, and power module 5 in downhole tool 1
Electricity it is relatively low when, in order to realize the reuse of downhole tool 1, can make charging interface 42 connect external power supply, Jin Ertong
Electrical interface 42 is overcharged to charge for power module 5.It wherein, can be at charging interface 42 when without using charging interface 42
Setting sealing-plug avoids the liquid in oil/gas well from flowing into power module 5 along charging interface 42 and burns out electricity to block charging interface 42
Source module 5 damages so as to cause downhole tool 1.
In shaft bottom information corresponding by the acquisition reservoir of data obtaining module 6, since the shaft bottom information can include oil
The bottom pressure of gas well and bottom hole temperature (BHT) etc., therefore, when obtaining shaft bottom information, data obtaining module 6 can include pressure and pass
Sensor and temperature sensor.Wherein, pressure sensor and temperature sensor respectively can be by the bottom pressure detected and shaft bottoms
Temperature transition is electric signal, and is transmitted to data processor 7.When obtaining shaft bottom information, in order to improve the accurate of shaft bottom information
Degree, and uninterrupted detection shaft bottom information, may be used high-precision pressure sensor and temperature sensor.For example, pressure
The measurement range of force snesor can be in 0~100 megapascal, and measurement accuracy can be 0.1%；The measurement range of temperature sensor exists
0~150 degree Celsius, measurement accuracy can be ± 0.5 degree Celsius, during the sample frequency interval of pressure sensor and temperature sensor
Between all can be 1 second, and the test constantly time be greater than or equal to 5 hours.
Further, in shaft bottom of the data obtaining module 6 along the first pressure guide hole 41 and the second pressure guide hole 31 detection oil/gas well
When pressure and bottom hole temperature (BHT), in order to avoid because the landwaste to being generated during reservoir reconstruction is to the first pressure guide hole 41 or the second pilot
Hole 31 results in blockage, and so as to reduce the accuracy of shaft bottom infomation detection, can be set in the first pressure guide hole 41 and the second pressure guide hole 31
Sealer is equipped with, which has breathing characteristics, and can be used for preventing the first pressure guide hole 41 and the second pressure guide hole 31 from blocking.
The sealer can be a kind of special seal fat, and with the characteristic that will not dissolve under the high temperature conditions, meanwhile, it can be to prevent
Only the impurity such as landwaste block the first pressure guide hole 41 or the second pressure guide hole 31, so as to fulfill shaft bottom information in the transformation process of reservoir
Accurate detection.For example, the sealer can not dissolve under 200 degrees Celsius of environment.
In addition, when obtaining shaft bottom information by data obtaining module 6, in order to improve the comprehensive of shaft bottom information, to keep away
Exempt from data obtaining module only to obtain the shaft bottom information of the opening area of the second pressure guide hole 31, referring to Fig. 3, bond on mould 4
Pilot slot 43 can be provided with, can dissolve can be provided at least one second pressure guide hole 31 on housing 3, and at least one second leads
Pressure hole 31 is connected by pilot slot 43 with the first pressure guide hole 41 respectively, in order to the shaft bottom information of the corresponding multiple directions of the reservoir
Can the first pressure guide hole 41 be transferred to, and then pass through data obtaining module along pilot slot 43 by least one second pressure guide hole 31
6 detect the shaft bottom information of the corresponding multiple directions of the reservoir, improve the comprehensive of shaft bottom acquisition of information.Wherein, it is at least one
Second pressure guide hole 31 may be uniformly distributed in the outer surface of dissolvable housing 3, it is of course also possible to which the monitoring based on shaft bottom information needs
Seek at least one second pressure guide hole 31 of setting.For example, at least one second pressure guide hole, 31 place plane can be with the oil/gas well pair
Plane where the reservoir answered is parallel.
Wherein, in order to avoid landwaste results in blockage to pilot slot 43, so as to reduce the accurate of bottom pressure and bottom hole temperature (BHT)
Property can also be provided with sealer in pilot slot 43, to prevent pilot slot 43 from blocking, be detected so as to improve data obtaining module 6
Shaft bottom information accuracy.The sealer can be with the sealer phase of setting in the first pressure guide hole 41 and the second pressure guide hole 31
Together, naturally it is also possible to it is different, if the sealer set in pilot slot 43 has a breathing characteristics, and can to avoid pilot slot 43 because
Clast blocks.
After data obtaining module 6 detects the corresponding shaft bottom information of the reservoir, it is transmitted to data processor 7 and obtains information
The electric signal that modulus block 6 detects is converted into numerical signal, and be transmitted to memory 7 and stored.After the completion of to reservoir reconstruction,
The dissolvable housing 3 on 1 surface of downhole tool returning in the oil/gas well realizes dissolving in drain, so as to dissolve dissolvable housing
The diameter of 3 downhole tool 1 that is to say that the diameter of adhering module 4 is less than the latus rectum in bridge plug.At this point, dissolvable shell is dissolved
The downhole tool 1 of body 3 can return out ground with drain is returned.When the downhole tool 1 for having dissolved dissolvable housing 3 return out ground with
Afterwards, the shaft bottom information stored in memory 8 can be transmitted to ground storage device 2 by data transmission module 9 to have deposited
Storage.
Wherein, in the transmission that shaft bottom information is carried out by data transmission module 9, can shaft bottom be carried out by data channel
The transmission of information, at this point, data transmission module 9 can be RS232 data-interfaces or RS484 interfaces.Passing through data channel
When carrying out data transmission, coffret can also be set in adhering module 4, which connect with data transmission module, with
Convenient for that can realize the transmission of the shaft bottom information between memory 8 and ground storage device 2 by coffret.Certainly, in order to
The poor sealing of the coffret because being set in adhering module 4 is avoided, it can be between memory 8 and ground storage device 2
Carry out wireless data transmission.At this point, data transmission module 9 can be the wireless communication devices such as router.The embodiment of the present invention is to this
It does not limit.
Further, after the shaft bottom information for receiving the transmission of memory 8 in ground storage device 2, in order to avoid detecting
There are impurity signals during the information of shaft bottom, and referring to Fig. 1, which can also include filter circuit 10,
It is filtered with the shaft bottom information received by filter circuit 10 to ground storage device 2, to remove in the information of shaft bottom
Impurity signal.Later, filter circuit 10 can shaft bottom information be transmitted to terminal by treated, to be shown by terminal,
It is conveniently operated the observation analysis of personnel.
In embodiments of the present invention, be respectively completed by bridge plug and perforating gun to oil/gas well set and perforation after, can
With by inside the pit shaft of downhole tool tripping in oil/gas well, and the wellhead equipment of the oil/gas well in a manner of pumping by underground work
Tool is sent to the position of bridge plug.Later, along the casing of oil/gas well and preforation tunnel into corresponding reservoir with the side of high-pressure large-displacement
Formula injects fracturing fluid, realizes the transformation to the reservoir.In the transformation process of the reservoir, power module is respectively acquisition of information mould
Block, data processor, memory and data transmission module provide power supply, with by data obtaining module along the first pressure guide hole, lead
Indent and at least one second pressure guide hole detect the shaft bottom information of the corresponding multiple directions of the reservoir in real time, to improve shaft bottom information
What is monitored is comprehensive.Data processor is transmitted to after data obtaining module gets shaft bottom information, it will by data processor
The electric signal of data obtaining module detection is converted to digital signal, and be transmitted to memory and stored.To the reservoir reconstruction
After the completion, the drain of returning in oil/gas well is dissolved, and then make to have dissolved the downhole tool of dissolvable housing to can dissolve housing
It returns and drains into ground, later, stored memory by the RS232 data-interfaces or RS484 data-interfaces that are set in adhering module
Shaft bottom information be transmitted to ground storage device, to realize the monitoring of the corresponding shaft bottom information of the reservoir, avoid in oil/gas well
Because the limitation of the caliber of fracturing string can not realize the reservoir reconstruction of extensive huge discharge after interior tripping in fracturing string.
Fig. 4 is a kind of method of monitoring well bottom information during reservoir reconstruction provided in an embodiment of the present invention.Referring to figure
4, this method comprises the following steps.
Step 401：It, when downhole tool is located at predeterminated position, is being examined during the reservoir reconstruction based on data obtaining module
Well logging bottom information.
In order to improve the production efficiency of the reservoir and recovery ratio, it is respectively completed by bridge plug and perforating gun to oil/gas well
It sets with after perforating job, the reservoir can be implemented to be transformed.In the transformation process to the reservoir, in order to continue to monitor the storage
The corresponding shaft bottom information of layer, can oil/gas well completion is set and perforating job after, by the underground described in above-described embodiment
Tool down toward the oil/gas well predeterminated position, more than the predeterminated position and will be carried out below the predeterminated position by downhole tool
Isolation.And then during transformation is implemented to the reservoir, data obtaining module can be led by can dissolve second on housing
The first pressure guide hole on pressure hole and adhering module persistently detects the corresponding shaft bottom information of the reservoir.
Wherein, which can refer at the bridge plug in the oil/gas well, and the outer diameter of downhole tool is more than the interior of bridge plug
Diameter, more than bridge plug and will be isolated below bridge plug by the combination of downhole tool and bridge plug.Shaft bottom information can include should
The corresponding bottom pressure of reservoir and bottom hole temperature (BHT) etc., when detecting the corresponding bottom pressure of the reservoir, data obtaining module can be with
Including pressure sensor；When detecting the corresponding bottom hole temperature (BHT) of the reservoir, data obtaining module can include temperature sensor.
Step 402：The shaft bottom information that data obtaining module detects is handled by data processor, and the place of depositing is to depositing
Reservoir.
When data obtaining module detects shaft bottom information, can the shaft bottom information of detection be transmitted to data processing in real time
Device is converted to digital information with the electric signal detected by data processor well information acquisition module.Later, by the number of conversion
Signal transmission realizes the storage to shaft bottom information to memory.
Wherein, data processor can be A/D converter, and certainly, data processor may be other conversion circuits.It deposits
Reservoir can be storage chip or RAM card, as long as can be the storage for the shaft bottom information for realizing digital signal, the present invention
Embodiment does not limit this.
It should be noted that in the transformation process to the reservoir, data obtaining module, number are continuously by power module
Power supply is provided according to processor and memory, so as to continuously carry out above-mentioned steps 401- steps 402, to pass through acquisition of information mould
Block persistently detects the corresponding shaft bottom information of the reservoir, and deposits place to memory after data processor is handled.
Step 403：When the downhole tool that designated solvent has dissolved dissolvable housing is located at ground, ground storage device
The shaft bottom information of memory storage is obtained by data transmission module.
It can be returned after the completion of to the reservoir reconstruction, in the reservoir in discharge designated solvent to the oil/gas well, and along the oil
Gas well, which returns, drains into ground.Drain of returning in the reservoir is returned when draining into the oil/gas well, which realizes to can dissolve shell
Body is completely dissolved, and has been dissolved the downhole tool of dissolvable housing and can have been returned discharge ground with the drain of returning in the oil/gas well.
When having dissolved the downhole tool of dissolvable housing and being located at ground, ground storage device can pass through data transmission module and obtain storage
The shaft bottom information of device memory storage, to realize the monitoring of the corresponding shaft bottom information to the reservoir.
Wherein, the designated solvent which returns discharge can be the solvent containing aluminium ion or magnesium ion, can dissolve housing
Can be using housing made of almag.Certainly, dissolvable housing can also be made using high-molecule metal material,
As long as being completely dissolved in the designated solvent that can return discharge in the reservoir, it is not limited in the embodiment of the present invention.Wherein,
Ground storage device can be mobile hard disk, or laptop or desktop computer etc..Passing through data transmission module
When carrying out the transmission of shaft bottom information, the transmission of shaft bottom information can be carried out by data channel, at this point, data transmission module can be with
For RS232 data-interfaces or RS484 interfaces.Certainly, wireless data can also be carried out between memory and ground storage device
Transmission, at this point, data transmission module can be the wireless communication devices such as router.
In embodiments of the present invention, in the transformation process of the reservoir, power module is respectively data obtaining module, data
Processor, memory and data transmission module provide power supply, with by data obtaining module along the first pressure guide hole and the second pilot
Persistently detect the corresponding shaft bottom information of the reservoir in hole.Data processing is transmitted to after data obtaining module gets shaft bottom information
The electric signal that data obtaining module detects is converted to digital signal by device by data processor, and is transmitted to memory progress
Storage.After the completion of to the reservoir reconstruction, the drain of returning in oil/gas well is dissolved to can dissolve housing, and then make to have dissolved can
The downhole tool of dissolving housing, which returns, drains into ground, later, flourish to be passed the shaft bottom information that memory stores by data transmission module
Ground storage device is transported to, to realize the monitoring of the corresponding shaft bottom information of the reservoir, avoids the tripping in pressure break pipe in oil/gas well
Because the limitation of the caliber of fracturing string can not realize the reservoir reconstruction of extensive huge discharge after column.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of monitoring device of shaft bottom information, which is characterized in that the monitoring device includes：Downhole tool and ground storage are set
Standby, the downhole tool includes can dissolve housing, adhering module, power module, data obtaining module, data processor, storage
Device and data transmission module；
The adhering module for bond and wrap up the power module, described information acquisition module, the data processor, institute
Memory and the data transmission module are stated, the dissolvable housing is wrapped in the outside of the adhering module, described to can dissolve
Housing can be dissolved by designated solvent, and the first pressure guide hole is provided in the adhering module, is set on the dissolvable housing
There is the second pressure guide hole, second pressure guide hole is connected by first pressure guide hole with the test side of described information acquisition module,
To detect shaft bottom information；
The power module passes respectively with described information acquisition module, the data processor, the memory and the data
Defeated module electrical connection, described information acquisition module are electrically connected with the data processor, the data processor and the storage
Device is electrically connected, and the memory is electrically connected with the data transmission module, to be obtained by the data processor to described information
The shaft bottom information that modulus block detects is stored after being handled into the memory；
When the downhole tool for having dissolved the dissolvable housing is located at ground, the ground storage device and the data transmission
Module connects, to obtain the shaft bottom information stored in the memory by the data transmission module.
2. monitoring device as described in claim 1, which is characterized in that the dissolvable housing is almag housing, described
Designated solvent is to return drain containing magnesium ion and chlorion in oil/gas well.
3. monitoring device as described in claim 1, which is characterized in that set in first pressure guide hole and second pressure guide hole
Sealer is equipped with, the sealer has breathing characteristics, and for preventing first pressure guide hole and second pressure guide hole from blocking up
Plug.
4. monitoring device as described in any one of claims 1-3, which is characterized in that pilot slot is provided in the adhering module,
At least one second pressure guide hole is provided on the dissolvable housing, at least one second pressure guide hole is led by described
Indent connects respectively with first pressure guide hole.
5. monitoring device as claimed in claim 4, which is characterized in that at least one second pressure guide hole is uniformly distributed in institute
State the outer surface of dissolvable housing.
6. monitoring device as claimed in claim 4, which is characterized in that the sealer is provided in the pilot slot, it is described
Sealer is used to prevent the pilot slot from blocking.
7. monitoring device as described in claim 1, which is characterized in that charging interface is provided in the adhering module, it is described
Charging interface is electrically connected with the power module, and the charging interface is used to charge for the power module.
8. monitoring device as described in claim 1, which is characterized in that the adhering module and the dissolvable housing are ball
Shape structure.
9. the monitoring device as described in claim 1-3,5-8 is any, which is characterized in that described information acquisition module includes pressure
Sensor and temperature sensor.
It is 10. a kind of based on any monitoring device monitoring well bottom information during reservoir reconstruction of the claims 1-9
Method, which is characterized in that the method includes：
It, when the downhole tool is located at predeterminated position, is being detected during the reservoir reconstruction based on described information acquisition module
Shaft bottom information；
The shaft bottom information that described information acquisition module detects is handled, and the place of depositing is deposited to described by the data processor
Reservoir；
When the downhole tool that the dissolvable housing has been dissolved by the designated solvent is located at ground, the ground storage device
The shaft bottom information of the memory storage is obtained by the data transmission module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810111426.2A CN108180014B (en) | 2018-02-05 | 2018-02-05 | Monitoring device and method for well bottom information |
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|---|---|---|---|
| CN201810111426.2A CN108180014B (en) | 2018-02-05 | 2018-02-05 | Monitoring device and method for well bottom information |
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| CN108180014B CN108180014B (en) | 2024-05-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113167108A (en) * | 2018-12-18 | 2021-07-23 | 斯伦贝谢技术有限公司 | Sensor-integrated smart plug system |
| US11661813B2 (en) | 2020-05-19 | 2023-05-30 | Schlumberger Technology Corporation | Isolation plugs for enhanced geothermal systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080257546A1 (en) * | 2006-09-20 | 2008-10-23 | Baker Hughes Incorporated | Autonomous Downhole Control Methods and Devices |
| CN105840166A (en) * | 2016-04-19 | 2016-08-10 | 中石化重庆涪陵页岩气勘探开发有限公司 | Horizontal well fracturing gas testing and well completion technology adopting completely dissoluble bridge plug |
| CN208073470U (en) * | 2018-02-05 | 2018-11-09 | 中国石油天然气股份有限公司 | The monitoring device of shaft bottom information |
-
2018
- 2018-02-05 CN CN201810111426.2A patent/CN108180014B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080257546A1 (en) * | 2006-09-20 | 2008-10-23 | Baker Hughes Incorporated | Autonomous Downhole Control Methods and Devices |
| CN105840166A (en) * | 2016-04-19 | 2016-08-10 | 中石化重庆涪陵页岩气勘探开发有限公司 | Horizontal well fracturing gas testing and well completion technology adopting completely dissoluble bridge plug |
| CN208073470U (en) * | 2018-02-05 | 2018-11-09 | 中国石油天然气股份有限公司 | The monitoring device of shaft bottom information |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113167108A (en) * | 2018-12-18 | 2021-07-23 | 斯伦贝谢技术有限公司 | Sensor-integrated smart plug system |
| US11661813B2 (en) | 2020-05-19 | 2023-05-30 | Schlumberger Technology Corporation | Isolation plugs for enhanced geothermal systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108180014B (en) | 2024-05-28 |
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