CN107567532A - Lifted by nitrogen, production logging and recovery test extend the method for carrying out well testing operation with single coiled tubing - Google Patents
Lifted by nitrogen, production logging and recovery test extend the method for carrying out well testing operation with single coiled tubing Download PDFInfo
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- CN107567532A CN107567532A CN201680014885.8A CN201680014885A CN107567532A CN 107567532 A CN107567532 A CN 107567532A CN 201680014885 A CN201680014885 A CN 201680014885A CN 107567532 A CN107567532 A CN 107567532A
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- pressure
- well
- layer
- valve
- packer
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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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
- E21B21/085—Underbalanced techniques, i.e. where borehole fluid pressure is below formation pressure
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/008—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 by injection test; by analysing pressure variations in an injection or production test, e.g. for estimating the skin factor
Abstract
A kind of method for being used to carry out pressure buildup test in the assessment layer of well comprises the following steps：Enter eleven punch 11 to assessing the well in layer, to allow hydrocarbon fluid to be flowed out from reservoir；By pressure buildup test system deployment into assessment layer；Lifting fluid is supplied with lifting fluid static pressure via coiled tubing, so as to which hydrocarbon fluid be lifted from layer is assessed towards ground；Packer is moved to setting position；Pressure data in monitoring and evaluation layer；When reaching the stable state of pressure data, shut-in valve is closed；And measure the recovery pressure assessed in layer using pressure monitoring device.Pressure buildup test system includes packer, subport, coiled tubing, shut-in valve, pressure monitoring device and PLT.
Description
Technical field
The present invention describes a kind of method and apparatus for being used to carry out pressure buildup test in well.More specifically, originally
Invention provides a kind of method and apparatus that pressure buildup test is carried out in the well lifted using nitrogen.
Background technology
Coiled tubing extension three times is currently needed in the exploration phase come the operation that runs a well test.First coiled tubing extends
It is coiled tubing is extended in pit shaft, to utilize nitrogen (N before pressure gauge is installed on cable2) lifting well.The
Two coiled tubings (" CT ") extension just reuses N before the well shut-in period for pressure buildup test2Lift well.3rd
Coiled tubing extends for heavy well killing fluid to be pumped into well after well testing operation is completed.
In order to assess unconventional and fine and close gas-bearing formation, it usually needs insertion coiled tubing.Unconventional and fine and close gas-bearing formation leads to
Chang Feichang is deep, if so heavy fluid in well be present, gas-bearing formation does not flow, unless by the way that nitrogen is pumped into Jing Zhonglai " lifting "
Hydrostatic pressure.In the case where hydrostatic pressure is relatively low, gas-bearing formation can flow, and can measure and test the flowing.
When being found that concern layer, it is necessary to carry out pressure buildup test.Prior art pays close attention to layer using nitrogen lifting, then
Stop pulling out coiled tubing from well, so as to which pressure gauge and shut-in valve are deployed in well, then extend coiled tubing
To lift well again, so as to apply the pressure drop needed for pressure buildup test, then when the test is finished, it is necessary to pressure is withdrawn from well
Power table.After pressure gauge installation is when 24 is small, the important pressure data on the fluidised form of well and between the time is lost.Need
Technical scheme come allow the early stage pressure of recording layer recover data, to more fully understand reservoir quality.
Concern layer in unconventional and fine and close gas-bearing formation usually requires to carry out nitrogen before it can be recorded and assess
Lifting.Currently, when identifying concern layer in well, it is necessary to after extension coiled tubing is with using nitrogen lifting well independently
Extend to underground and recover test equipment.Recovering test equipment includes being extended to the pressure gauge and closing well instrument on ground by means of steel wire
Device., it is necessary to second of lifting well after pressure gauge and closing well (SI) instrument are installed on steel wire.Pressure gauge passage record pressure
Power with the time data.SI instruments are closed after a setting time is reached, so as to allow to recover the pressure in well.SI can be borrowed
Help timer or controlled and started by ground.Then, pressure gauge record pressure is recovered.Regeneration rate can be used for assessing concern
The productivity ratio of layer.
The content of the invention
The present invention describes a kind of method and apparatus for being used to carry out pressure buildup test in well.More specifically, originally
Text provides a kind of be used in a CT extends using the Inter-zonal packing of multiple well nitrogens lifting step and concern layer come in well
The middle method and apparatus for carrying out pressure buildup test.
In an aspect, there is provided in the method for assessing progress pressure buildup test in layer of well.Methods described includes
Following steps：To the cased perforated of the well in the assessment layer, wherein, the step of being perforated to described sleeve pipe, which can operate, to be used for
Hydrocarbon fluid is allowed to flow to the assessment layer from reservoir；By the assessment layer of pressure buildup test system deployment to the well
In.The pressure buildup test system is configured to measure the pressure in the assessment layer.Pressure buildup test system includes：Packing
Device, it is configured to isolate the assessment layer when positioned at the setting position, and is configured at retracted position in the well
Annular gap is formed between described sleeve pipe and the pressure buildup test system；Subport, it is configured to lifting fluid conveying
To the assessment layer；Coiled tubing, it is configured to the lifting fluid being delivered to the subport from the ground, wherein,
The pressure buildup test system is disposed by means of the coiled tubing.The coiled tubing includes cable, the cable structure
For electronic signal is transmitted to ground control system from the pressure buildup test system.Pressure buildup test system also includes：
Shut-in valve, it is configured to control hydrocarbon fluid from the assessment stream of the layer to the well space above the packer at a distance
It is dynamic；Pressure monitoring device, it is configured to measure the pressure data in the assessment layer, and by the pressure data via the cable
Line is transmitted to the ground control system；And PLT, it is configured to measure from the assessment layer via the shut-in valve to described
The flowing in the well space above packer.Methods described also comprises the following steps：Via described in coiled tubing supply
Fluid is lifted, to lift the hydrostatic pressure of the assessment layer, wherein, the step of lifting the hydrostatic pressure, which can operate, to be used for
By annular gap of the hydrocarbon fluid between the packer and described sleeve pipe in the assessment layer towards the ground
Lifting；The packer is moved to the setting position, wherein, in the setting position, the packer and the well
Described sleeve pipe contacts so that the hydrocarbon fluid assessed in layer is via the shut-in valve to the well spatial flow；Monitoring
The pressure data for assessing layer, to determine the stable state of the pressure data；When reaching the described steady of the pressure data
During state, the shut-in valve is closed, to prevent the hydrocarbon fluid from being flowed out from the assessment layer；And filled using the pressure monitoring
Put to measure the recovery pressure in the assessment layer.
In certain aspects, the lifting fluid is nitrogen.In certain aspects, methods described is additionally included in described in measurement
Recover the step of pressure makes the packer be back to the retracted position afterwards.In certain aspects, methods described also includes
Following steps：The pressure buildup test system is relocated to the second assessment layer；The packer is moved to described set
Position, monitoring flow through the pressure data of the hydrocarbon fluid of the shut-in valve, to determine that described second assesses in layer
The pressure data stable state；When reaching the stable state of the pressure data, the shut-in valve is closed, it is described to prevent
Hydrocarbon fluid flows out from the described second assessment layer；And described second is measured using the pressure monitoring device and is assessed in layer
Recover pressure.In certain aspects, the step of methods described also includes filling the well with completion fluid.In certain aspects, institute
It is salt solution to state completion fluid.In certain aspects, the coiled tubing includes valve, and the valve configurations flow to block the lifting
The flowing of body.In certain aspects, methods described also includes drilling out well for producing hydrocarbon fluid and by by described sleeve pipe
The step of being installed in the well to prepare the well.
In second aspect, there is provided a kind of equipment for assessing the pressure buildup test in layer for well.The equipment
Including：Packer, it is configured to isolate the assessment layer when positioned at the setting position, and be configured at retracted position
Annular gap is formed between the wall of the well and the equipment；Subport, it is configured to lifting fluid being delivered to the assessment
Layer；Coiled tubing, it is configured to the lifting fluid being delivered to the subport from the ground, wherein, the equipment is borrowed
Help the coiled tubing to dispose.The coiled tubing includes cable, and the cable structure is to set electronic signal from described
It is standby to transmit to ground control system.The equipment also includes：Shut-in valve, it is configured to control hydrocarbon fluid from the assessment layer to position
Flowing in the well space above the packer at a distance；Pressure monitoring device, it is configured to measure in the assessment layer
Pressure data, and by the pressure data via the cable to the ground control system；And PLT, it is constructed
To measure the assessment layer via flowing of the shut-in valve to the well space above the packer.
In certain aspects, the ground control system is configured to send electronic signal to the shut-in valve and from described
Electronic signal is received in shut-in valve.In certain aspects, the ground control system is configured to send electronic signal to described
Pressure monitoring device simultaneously receives electronic signal from the pressure monitoring device.In certain aspects, the ground control system structure
Make to send electronic signal to the PLT and receiving electronic signal from the PLT.In certain aspects, the ground control
System is configured to the electronic signal of the display by the cable, and is also configured to storage as described in the cable
Electronic signal.
In a third aspect, there is provided a kind of method for carrying out pressure buildup test.Methods described includes drilling out for giving birth to
Produce the well of hydrocarbon and by preparing the casing well.Then coiled tubing is inserted into well.Via described continuous
Oil pipe the supply of nitrogen, to lift the hydrostatic pressure of the assessment layer.Also surveyed using at least one pressure monitoring device
Amount assesses the pressure of layer.
In another aspect, there is provided a kind of equipment that pressure buildup test is carried out in well.The equipment includes operating
At least one down-hole pressure monitoring device for the pressure in check and evaluation layer.The equipment also includes being used to isolate concern layer
Packer.The equipment also includes at least one data transmission device, and at least one data transmission device is with being used for well
At least one down-hole pressure monitoring device communication of terrestrial transmission data.The equipment also includes to operate for allowing nitrogen stream
Dynamic coiled tubing and for controlling valve of the nitrogen via the flowing of coiled tubing.The equipment also includes being used to measure simultaneously
Characterize the dynamic production logging instrument of hydrocarbon stream.
Brief description of the drawings
With reference to following description, claims and accompanying drawing, it will be better understood that these and other features, aspect and excellent
Point.It should be noted, however, that accompanying drawing illustrate only several embodiments, and because these embodiments can allow other same
The effective embodiment of sample, so accompanying drawing is not qualified as limiting the scope of the present invention.
Fig. 1 shows the plan of the pressure buildup test system according to embodiment.
Fig. 1 a show the plan of the pressure buildup test system according to embodiment.
Fig. 2 shows the plan of the pressure buildup test system according to embodiment.
Fig. 3 shows the plan of the pressure buildup test system according to embodiment.
Embodiment
Although for purposes of illustration, described in detail below contain many details, it will be appreciated that, this area
Skilled artisan will realize that, many examples, variations and modifications based on following details are in scope and spirit of the present invention
Within.Therefore, do not lose it is any general and in the case of not applying limitation to the scope of the present invention, to it is described herein and
The exemplary embodiment provided in accompanying drawing is described.
Method provided herein and equipment allow to extend come one of the concern layer in well using only once coiled tubing
Pressure buildup test is carried out in individual or multiple assessment layers.As used, " concern layer " refers to the storage for hydrocarbon production
The valuable layer of layer.Used in the text " valuable " refers to or most probably producing the layer of hydrocarbon fluid.Concern
Layer can by state properties come physical limitations, state properties by before to casing as well initial preparation a part of institute
The cable or well log of execution records.Given well can have multiple concern layers, and given concern layer can have
Multiple assessment layers.
Advantageously, this method and equipment provide more accurately well test data because by nitrogen lifting and well testing
Operative combination is to individual equipment with during.
With reference to figure 1, the embodiment of the equipment of pressure buildup test system 10 is shown.Pressure buildup test system 10 includes
Coiled tubing 20.Coiled tubing 20 can be the arbitrary continuation oil pipe for including cable 22, and cable 22 can be operated for being inserted into well
In 80.Cable 22 is by the electronic signal from ground 100 or data transfer to underground equipment.Cable 22 provides and downhole hardware
Electronic communication, so as to allow earthward to send real time data and information and from ground receiver real time data and information.At least
In one embodiment, cable 22 provides the means for starting downhole hardware.The example of downhole hardware include volume control device,
Sampling apparatus, electroporation apparatus, packer and recorded downhole device.Cable 22 can allow ground control system 70 to be filled with underground
Any data transmission device to be communicated between putting, optionally, cable 22 can allow ground control system 70 and well
Any transmitting device of power Transmission is carried out between lower device, and optionally, cable 22 can allow ground to control system
Communicate and any transmitting device of power Transmission simultaneously between system 70 and downhole hardware.It may be used as the cable of cable 22
Example includes electrical cable and Connectorized fiber optic cabling.Coiled tubing 20 including cable 22 can be suitable for supplying nitrogen, fluid is defeated
The coiled tubing for being sent in well, logging well and perforating.In at least one embodiment, pressure is recovered to survey using power lines such as cables
Test system 10 is transported in well 80.In at least one embodiment, using sleeve pipe 82 to the sleeve pipe of well 80.In at least one embodiment
In, pressure buildup test system 10 and pressure buildup test use single coiled tubing in the extension of single coiled tubing.
Coiled tubing 20 is delivered to subport 30 by fluid is lifted from ground 100.Lifting fluid is provided to hydrocarbon stream in well
" lifting " of the hydrostatic pressure of body, to realize that well originates.As used herein, " well starting " refers to working as in well
When the density of hydrostatic column is decreased to positive pressure drop (for example, when bottom pressure is higher than well fluids downhole static pressure), hydrocarbon fluid is from stratum
It flow in well and flow to ground.The lifting of hydrostatic pressure promotes the fluid in well 80 to surround the continuous oil in well space 84
Pipe 20 flows towards ground 100.It is any fluid that can lift the hydrocarbon fluid in well 80 to lift fluid.In at least one embodiment
In, lifting fluid is nitrogen.This is also referred to as nitrogen gaslift (kick-off).Nitrogen is inertia and cheap.At least one
In embodiment, realize that well originates using the nitrogen supplied from ground 100 via coiled tubing 20 to subport 30.At least one
In embodiment, hydrocarbon fluid is lifted from well 80 in the case of in the absence of any plant equipment such as jet pump.At least one
In individual embodiment, coiled tubing does not have the hydrocarbon fluid in its internal flow.
Coiled tubing 20 is connected to ground control system 70.Ground control system 70 includes lifting fluid from ground 100
It is delivered to the equipment needed for subport 30.In at least one embodiment, ground control system 70 includes blower fan.In an implementation
In example, ground control system 70 includes pump.Ground control system 70 also includes display and transmitted via the cable 22 of coiled tubing 20
Electronic signal and data needed for reading system, including such as monitor, computer processor and other control devices.Ground
Control system 70 includes the equipment known in the prior art needed for the system in operation and control well 80.
With reference to figure 2, show and originate pump 120 using well to realize the embodiment of well starting.Well originates pump 120 by means of cable
Line 22 is connected to ground control system 70.Well starting pump 120 is connected to packer 40 so that well starting pump 120 is located at ground
Between 100 and packer 40.Well starting pump 120 provides power to lift the hydrocarbon fluid in well 80.Using pump well starting with
Using gas operate under well lifting identical principle, here, the negative hydrostatic pressure of well is decreased to promote flowing.Well originates
Pump 120 can be that can produce power to promote any type pump that the negative hydrostatic pressure of well flows.Pump 120 is originated for well
Pump selection can depend on expected flow fluid and fluid present in gas.It may be used as well starting pump 120
The example of pump includes reciprocating pump, screw pump, electric submersible pump and jet pump.In at least one embodiment, well starting pump 120 is latent for electricity
Pump.In the embodiment with well starting pump 120, pressure buildup test system 10 does not have subport 30 and coiled tubing 20.
Referring again to Fig. 1, in certain embodiments, subport 30 is connected to packer 40.Packer 40 is isolated in well 80
Assessment layer 90.Isolation well 80 can prevent " wellbore storage effect " at or near concern layer, and therefore reduce damage well testing
The risk of data.As used herein, " wellbore storage effect " refers to the phenomenon observed in well testing, pit shaft
Storage effect measures at ground to be occurred when damming test pressure, initial pressure value directly represent reservoir data but by
The influence of pit shaft cylinder (in other words, pressure change slows down because of pit shaft cylinder).In the described embodiment, by using packing
The sealing of device 40 assesses layer 90 and measures pressure data as close to the ground of layer 90 is assessed to make wellbore storage effect minimum or complete
Avoid wellbore storage effect entirely.In certain embodiments, packer 40, which is set, is assessing above layer 90.In certain embodiments,
Packer 40, which is set, to be assessed below layer 90.In certain embodiments, packer 40, which is set, is assessing among layer 90.
Packer 40 has retracted position and setting position.As shown in figure 1, in retracted position, in the wall portion and envelope of well 80
Annular gap 50 is formed between the outer surface of device 40, the hydrocarbon fluid assessed in layer 90 can flow around packer 40.Such as ginseng
Examine shown in Fig. 1 a, in setting position, packer 40 contacts with the wall portion of well 80, is surrounded so as to prevent from assessing the hydrocarbon fluid in layer 90
Packer 40 moves.In setting position, hydrocarbon fluid only can by through shut-in valve 52 reach subport 30 come from assess layer 90
Moved towards ground 100.Shut-in valve 52 is by hydrocarbon fluid from the reboot of layer 90 is assessed to the set in coiled tubing 20 and well 80
Well space 84 between pipe 82.In certain embodiments, packer 40 is staddle packer.In certain embodiments, insulate
Device 40 is temporary packer.
The cable 22 of coiled tubing 20 is connected with shut-in valve 52, pressure monitoring device 54 and PLT 60.In at least one reality
Apply in example, shut-in valve 52 is physically attached to packer 40.Shut-in valve 52 is downhole shut-in valve (DHSI valves).As used herein
As, " downhole shut-in valve " is referred to such as lower valve：The valve is designed as closing being shorter than in 3 seconds, so as to record initial wink
When pressure show.Shut-in valve 52 provides the downhole closing for minimizing borehole effect when closed, and borehole effect makes well instantaneous
Pressure data distortion.In at least one embodiment, as shown in figure 1, pressure monitoring device 54 is physically attached to shut-in valve 52,
So that shut-in valve 52 is between packer 40 and pressure monitoring device 54.In at least one embodiment, as with reference to the institute of figure 3
Show, pressure monitoring device 54 is physically attached to packer 40 and adjacent with shut-in valve 52.Pressure monitoring device 54 and shut-in valve
52 are operating independently.In the embodiment that shut-in valve 52 is not used, pressure monitoring device 54 still can be used.
Pressure monitoring device 54 is the pressure gauge for measuring and recording pressure data.Pressure monitoring device 54 measures well 80
In pressure.In at least one embodiment, the pressure in layer 90 is assessed in the measurement of pressure monitoring device 54.Pressure monitoring device 54
Including that can measure and record any known pressure monitoring device of instantaneous pressure data, and steady state pressure number can be used
According to.May be used as the example of the pressure gauge of pressure monitoring device 54 includes the pressure record such as pressure gauge and quartz transducer
Device.Pressure monitoring device 54 can start to gather pressure data at the time of shut-in valve 52 is closed, with record crucial wink early stage
When pressure show.In at least one embodiment, pressure monitoring device 54 transmits real-time pressure data to ground via cable 22
Face control system 70.
PLT 60 is that can measure and characterize the production logging instrument (PLT) of flowing.PLT 60 uses coiled tubing 20
Cable 22 and the real-time Communication for Power of ground control system 70.In at least one embodiment, PLT 60 is measured and recorded to comment in real time
Assess layer 90.In at least one embodiment, PLT 60 includes spinner and sensor to measure and characterize flowing.
In certain embodiments, pressure data is recorded in memory.In at least one embodiment, pressure data quilt
It is stored in the memory of pressure monitoring device 54.In at least one embodiment, pressure data is stored in depositing for PLT 60
In reservoir.Record data in and play a part of data backup in memory.In certain embodiments, pressure data is passed in real time
The ground control system 70 transported at ground 100.In certain embodiments, pressure data is recorded in real time in memory simultaneously quilt
Transmit to ground control system 70.In certain embodiments, data are transferred to ground via the cable 22 in coiled tubing 20
Control system 70.In certain embodiments, pressure data is transmitted by means of wireless down-hole pressure instrument.
In an aspect, there is provided the method for carrying out pressure buildup test.This method is described with reference to figure 1 and Fig. 1 a, so
And, it should be understood that this method can be performed using the combination of any embodiment or these embodiments in above-described embodiment.
The step of this method includes drilling out well 80 for producing hydrocarbon fluid.The step of drilling out well 80 is also using sleeve pipe 82 to well 80
The step of sleeve pipe.Drill out the well 80 for producing hydrocarbon fluid and be the step of preparing well 80 to the sleeve pipe of well 80 using sleeve pipe 82
The standard procedure carried out in preparation of the production with well.It can drill out production well 80 using known method and utilize set
Pipe 82 is to the sleeve pipe of well 80.
Sleeve pipe 82 is perforated at layer 90 assessing.Sleeve pipe 82 is perforated and allows flowing to provide full assessment concern layer
The method of productive potentialities." perforation " or " entering eleven punch 11 " refers to：Hole is formed in sleeve pipe so as to allow the stream such as hydrocarbon fluid
The process that body is flow to inside well from reservoir.Hydrocarbon fluid can be in reservoir can be via any fluid of the output of well 80.Hydrocarbon
Fluid can include oil, natural gas, salt solution, water and combinations thereof.In at least one embodiment, hydrocarbon fluid is oil.Extremely
In few one embodiment, hydrocarbon fluid is natural gas.Layer 90 is assessed at the desired depth of concern layer.In at least one embodiment
In, sleeve pipe 82 is perforated at the farthest desired depth from the ground of concern layer.
Once after assessing the sleeve pipe 82 of well 80 is perforated at layer 90, pressure buildup test system 10 is disposed to underground
Into well 80 so that packer 40 is neighbouring with assessing layer 90 by means of coiled tubing 20.It is as used herein such, " with commenting
It is neighbouring to estimate layer " refer to：Packer, which can be located at, to be assessed below layer, and optionally, packer can be located at the centre for assessing layer,
Optionally, packer can be located at and assess above layer.In at least one embodiment, before being perforated to sleeve pipe 82, will press
Power is recovered test system 10 and is deployed in underground in well 80.In at least one embodiment, pressure buildup test system 10 by
Disposed in cable to underground.
Once being located in pressure buildup test system 10 after the position neighbouring with assessing layer 90, lifting fluid is via continuous
Oil pipe 20 and subport 30 are supplied to, and the hydrostatic pressure of layer 90 is assessed with lifting.As shown in figure 1, packer 40 is positioned at retraction
Position.Shut-in valve 52 is opened.From layer 90 is assessed towards the hydrocarbon fluid in the lifting of ground 100 well 80.Measured in real time using PLT 60
Hydrocarbon fluid flows., from when assessing lifting hydrocarbon fluid in layer 90, pressure buildup test can be carried out when.In at least one embodiment
In, lift the hydrocarbon fluid in well 90 towards ground in annular gap (the well space 84 between well 80 and coiled tubing 20) so that
The supply of coiled tubing 20 lifts fluid and hydrocarbon fluid is not present.
In order to which initiation pressure recovers to test, as shown in Figure 1a, packer 40 is placed on assessing at or near layer 90
The setting position of required isolation depth, to prevent wellbore storage effect from damaging well test data.Set being located at packer 40
After position, assess layer 90 in hydrocarbon fluid flow to subport 30 via shut-in valve 52, leave well space 84 and up to
Ground 100.Hydrocarbon fluid continues flowing to be transmitted until reaching in ground control system 70 by pressure monitoring device 54 and PLT 60
Reading represent stable state." stable state " or " stable state " is referred to via shut-in valve 52 and by pressure monitoring device 54 and PLT
60 steady pressures and regime flow measured.Such as use in the text, " stabilization " refers to that pressure or flow are constant
And indeclinable stable state or substantially stable state within a period of time.
When reaching stable state, shut-in valve 52 is closed, so as to start that pressure is recovered to carry out transient analysis.Close shut-in valve
52, and record using the pressure measxurement of pressure monitoring device 54 and be used as pressure data.What the pressure in layer 90 is assessed was recovered
Pressure monitoring device 54 measures pressure simultaneously.In certain embodiments, during hydrocarbon fluid flows, initiation pressure measurement.One
In a little embodiments, initiation pressure measures at the time of shut-in valve 52 is closed.Passage record pressure measxurement over time, to determine to press
Power regeneration rate.Pressure regeneration rate represents the productive potentialities of well.
Quick or unexpected closing shut-in valve 52, so as to close shut-in valve 52 in a short time, to record instantaneous pressure at once
Force data.Shut-in valve 52 is closed, and pressure monitoring device 54 records the pressure data for build-up analysis and measured extensive
Multiple pressure.As used herein such, " pressure recovery " refers to the increase of the pressure value after shut-in valve is closed.Analysis pressure
Power recovers data (for example, second dervative of the derivative of pressure value, pressure value and pressure value), and can be from analyze data set
In deduce the characteristic on stratum.The characteristic can include such as permeability, skin factor and neighbouring tomography.Pressure buildup test
Duration depends on the characteristic that pressure buildup test data are intended to assess.For example, compared with analyzing the tomography of near wellbore, it is right
The determination of tomography away from pit shaft needs the more time.There may be two ways to determine whether pressure buildup test is completed.
In the case where ground control system 70 can monitor conditions down-hole in real time, real-time ground reading can indicate the border of test,
In other words, ground control system can indicate when to realize that complete pressure is recovered.Can not be real in ground control system 70
When monitor conditions down-hole in the case of, pressure data can be collected using memory-type pressure meter (memory gauge), and
The time can be estimated according to the previous experiments in well and reservoir.Rule of thumb, it is contemplated that the pressure buildup test duration
For 1.5 times of flowing.
After completing to recover test, packer 40 is set to be back to retracted position so that packer 40 does not set or released
Put, and pressure buildup test system 10 can be fetched from well 80.In at least one embodiment, complete to recover test
Afterwards, packer 40 is back to retracted position, and another concern layer or another assessment layer 90 being repositioned in well 80.
In certain embodiments, this method, which is additionally included in, sleeve pipe 82 is perforated before test process.In some implementations
In example, it can be estimated that multiple assessment layers, without removing pressure buildup test system equipment from well 80.In these embodiments
In, Pressure Recovery System 10 is positioned at the second assessment layer using packer 40, and nitrogen is supplied via coiled tubing 20, with
The hydrostatic pressure of layer is assessed in lifting second, then, is measured using pressure buildup test system 10 in pressure buildup test
The inflow of hydrocarbon.This can be repeated in any number of assessment layer, without removing pressure buildup test system 10 from well 80.
In at least one embodiment, cased perforated is dropped to pressure buildup test system in the first assessment layer
First assesses near layer, and completes pressure buildup test.Then, assessed from first and pressure buildup test system removed in layer,
And the connection of the well sealed above disconnected first assessment layer and the first assessment layer.First assesses layer can be with cement or bridges come close
Envelope.Layer is assessed second, is being assessed than first at desired depth of the layer closer to ground, again to cased perforated.Pressure is extensive
Repetition measurement test system is placed in the second assessment layer, and is carried out second pressure and recovered test.This can move close to ground step by step
Repeated in the extra assessment layer in face.The assessment layer that once assessing one layer perforation ensures only currently to be evaluated is contributed extensive by pressure
The pressure data that complex system receives.It should be understood that well testing may be caused when carrying out pressure buildup test and small pressure disturbance
, it is necessary to high accuracy during error.
In a further embodiment, well 80 is filled with completion fluid.Completion fluid or well killing fluid can control well 80
Pressure fluid.In certain embodiments, it is used as completion fluid using salt solution.Salt solution is the high saliferous of the density of density ratio fresh water
Water.Salt solution can be derived from any saline source for the pressure that can control well 80.In alternative embodiments, well killing fluid is to be enough to stop
The heavy-fluid that hydrocarbon is flow in well 80 from reservoir.
The benefit of multiple embodiments disclosed in this application includes reducing to assess unconventional and fine and close gas-bearing formation
The insertion quantity of coiled tubing.The number for reducing coiled tubing extension will also reduce the installation up and down of coiled tubing ground installation.
The reduction of coiled tubing extension reduces the operating cost relevant with these operations.In addition, multiple embodiments allow by making nitrogen
Gas is recycled to via coiled tubing assesses layer to lift assessment layer and be encouraged layer is assessed to flow regime.Multiple embodiments also permit
Perhaps using production logging Instrument Evaluation and measurement come the flowing of self-evaluating layer.PLT can be used for measuring in flowing and characterize well
Production.PLT can be used for before pressure buildup test the layer for assessing the lifting stage.Multiple embodiments also allow to fluidized bed
Closing well at once is carried out, to utilize down-hole pressure monitoring device record pressure buildup test.Multiple embodiments are not provided with memory-type
Pressure gauge or the presetting shut-in valve closed after by setting time.Multiple embodiments also allow Real Time Observation via electronics
Data transfer cable or fibre optic data transmission cable to ground pressure data.Another usefulness of multiple embodiments
It is：Multiple assessment layer retest methods that can be in well, without coiled tubing is retracted into ground.
In at least one embodiment, downhole hardware does not have production tube.
Although method and apparatus is described in detail, it will be appreciated that, do not departing from the principle and scope of the present invention
In the case of, various modifications can be carried out, replaces and changes.Therefore, the scope of the present invention should be by the claims below and its conjunction
Suitable legal equivalents limit.
Unless the context, otherwise singulative "one", " one " and "the" include plural reference.
It is selectable or selectively refer to：The event or situation then described may occur or may not occur.Should
Description includes event or environment situation about occurring and situation about not occurring.
Scope herein can be expressed as from about particular value to about another particular value.When this scope of statement
During with all combinations in scope, it should be understood that another embodiment is from a particular value to another particular value.
As herein and appended claims used in, word " comprising ", " having " and "comprising" and they
All grammatical variants, which are intended to have, is not excluded for the opening of other key elements or step, the nonrestrictive meaning.
As used herein like that, such as the term such as " first " and " second " is assigned arbitrarily, and is intended merely to differentiation and is set
Standby two or more part.It should be understood that word " first " and " second " act on without other, and not the name of part
Word or a part for description, and they also not necessarily limit the relative position or orientation of part.Further, it is understood that
Any " the 3rd " part is needed not exist for using only term " first " and " second ", although being considered as this within the scope of the invention
Kind possibility.
Claims (15)
1. a kind of method for assessing progress pressure buildup test in layer in well, methods described comprises the following steps：
To the cased perforated of the well in the assessment layer, wherein, the step of perforate to described sleeve pipe, which can operate, to be used to allow
Hydrocarbon fluid flows to the assessment layer from reservoir；
By in the assessment layer of pressure buildup test system deployment to the well, the pressure buildup test system is configured to survey
The pressure in the assessment layer is measured, the pressure buildup test system includes：
Packer, the packer is configured to isolate the assessment layer when positioned at setting position, and is also configured in retraction position
When putting annular gap is formed between the described sleeve pipe and the pressure buildup test system of the well；
Subport, the subport are configured to lifting fluid being delivered to the assessment layer；
Coiled tubing, the coiled tubing is configured to the lifting fluid being delivered to the subport from the ground, described
Pressure buildup test system is disposed by means of the coiled tubing, and the coiled tubing includes cable, and the cable structure is
Electronic signal is transmitted to ground control system from the pressure buildup test system；
Shut-in valve, the shut-in valve are configured to control hydrocarbon fluid from the assessment layer to above the packer at a distance
Well space flowing；
Pressure monitoring device, the pressure monitoring device are configured to measure the pressure data in the assessment layer, and by the pressure
Force data is via the cable to the ground control system；And
PLT, the PLT are configured to measure from the assessment layer via the well space above the shut-in valve to the packer
Flowing；
The lifting fluid is supplied via the coiled tubing, to lift the hydrostatic pressure of the assessment layer, lifts the stream
The step of body static pressure can operate for by the hydrocarbon fluid in the assessment layer via the packer and described sleeve pipe it
Between towards the ground lift；
The packer is moved to the setting position, in the setting position, the set of the packer and the well
Pipe contacts so that the hydrocarbon fluid assessed in layer is via the shut-in valve to the well spatial flow；
The pressure data of the assessment layer is monitored, to determine the stable state of the pressure data；
When reaching the stable state of the pressure data, the shut-in valve is closed, to prevent the hydrocarbon fluid from the assessment
Flowed out in layer；And
The recovery pressure in the assessment layer is measured using the pressure monitoring device.
2. according to the method for claim 1, wherein, the lifting fluid is nitrogen.
3. method according to claim 1 or 2, being additionally included in the measurement recovery pressure afterwards returns the packer
The step of to the retracted position.
4. according to the method for claim 3, also comprise the following steps：
The pressure buildup test system is relocated to the second assessment layer；
The packer is moved to the setting position；
Monitoring flows through the pressure data of the hydrocarbon fluid of the shut-in valve, to determine that described second assesses in layer
The stable state of the pressure data；
When reaching the stable state of the pressure data, the shut-in valve is closed, to prevent the hydrocarbon fluid from described second
Assess and flowed out in layer；And
The recovery pressure in the second assessment layer is measured using the pressure monitoring device.
5. method according to any one of claim 1 to 4, in addition to the step of fill the well with completion fluid.
6. method according to any one of claim 1 to 5, wherein, the completion fluid is salt solution.
7. method according to any one of claim 1 to 6, wherein, the coiled tubing includes valve, the valve structure
Make to block the flowing of the lifting fluid.
8. method according to any one of claim 1 to 7, also comprises the following steps：
Drill out the well for producing hydrocarbon fluid；And
Prepare the well by the way that described sleeve pipe is installed in the well.
9. a kind of equipment for assessing the pressure buildup test in layer for well, the equipment includes：
Packer, the packer is configured to isolate the assessment layer when positioned at the setting position, and is configured to retracting
During position annular gap is formed between the wall of the well and the equipment；
Subport, the subport are configured to lifting fluid being delivered to the assessment layer；
Coiled tubing, the coiled tubing are configured to the lifting fluid being delivered to the subport from ground, wherein, it is described
Equipment is disposed by means of the coiled tubing, and the coiled tubing includes cable, the cable structure be by electronic signal from
The equipment is transmitted to ground control system；
Shut-in valve, the shut-in valve are configured to control hydrocarbon fluid from the assessment layer to above the packer at a distance
Well space flowing；
Pressure monitoring device, the pressure monitoring device are configured to measure the pressure data in the assessment layer, and by the pressure
Force data is via the cable to the ground control system；And
PLT, the PLT are configured to measure empty via the well above the shut-in valve to the packer from the assessment layer
Between flowing.
10. equipment according to claim 9, wherein, the lifting fluid is nitrogen.
11. the equipment according to claim 9 or 10, wherein, the coiled tubing includes valve, and the valve configurations are to cut
The flowing of the disconnected lifting fluid.
12. the equipment according to any one of claim 9 to 11, wherein, the ground control system is configured to electronics
Signal sends to the shut-in valve and receives electronic signal from the shut-in valve.
13. the equipment according to any one of claim 9 to 12, wherein, the ground control system is configured to electronics
Signal sends to the pressure monitoring device and receives electronic signal from the pressure monitoring device.
14. the equipment according to any one of claim 9 to 13, wherein, the ground control system is configured to electronics
Signal sends to the PLT and receives electronic signal from the PLT.
15. the equipment according to any one of claim 9 to 14, wherein, the ground control system is configured to display profit
With the electronic signal of the cable, and it is also configured to the electronic signal of the storage by the cable.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562131273P | 2015-03-11 | 2015-03-11 | |
| US62/131,273 | 2015-03-11 | ||
| PCT/US2016/022062 WO2016145340A1 (en) | 2015-03-11 | 2016-03-11 | Method for conducting well testing operations with nitrogen lifting, production logging, and buildup testing on single coiled tubing run |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107567532A true CN107567532A (en) | 2018-01-09 |
Family
ID=55642873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680014885.8A Pending CN107567532A (en) | 2015-03-11 | 2016-03-11 | Lifted by nitrogen, production logging and recovery test extend the method for carrying out well testing operation with single coiled tubing |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20160273347A1 (en) |
| EP (1) | EP3268582A1 (en) |
| CN (1) | CN107567532A (en) |
| CA (1) | CA2977420A1 (en) |
| WO (1) | WO2016145340A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022036A (en) * | 2019-10-23 | 2020-04-17 | 核工业北京化工冶金研究院 | Method for detecting damage of well pipe |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11326427B2 (en) * | 2016-12-28 | 2022-05-10 | Upwing Energy, Inc. | Altering characteristics of a wellbore by mechanical intervention at the source |
| CN112360431A (en) * | 2020-11-11 | 2021-02-12 | 中石化石油工程技术服务有限公司 | Oil and gas well multilayer testing device and testing method |
| US20230110038A1 (en) * | 2021-10-12 | 2023-04-13 | Saudi Arabian Oil Company | Methods and tools for determining bleed-off pressure after well securement jobs |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1804370A (en) * | 2005-12-09 | 2006-07-19 | 辽河石油勘探局 | Cable controlled separate layer production and test technology for oil well |
| US20070044960A1 (en) * | 2005-09-01 | 2007-03-01 | Lovell John R | Methods, systems and apparatus for coiled tubing testing |
| CN201090212Y (en) * | 2007-04-05 | 2008-07-23 | 北京华能通达能源科技有限公司 | Sleeve well cable pump-exhausting type formation sampler |
| CN103334744A (en) * | 2013-07-23 | 2013-10-02 | 北京环鼎科技有限责任公司 | Cable formation tester |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3796261A (en) * | 1972-09-11 | 1974-03-12 | Schlumberger Technology Corp | Releasable connection for pressure controlled test valve system |
| US5056600A (en) * | 1990-05-07 | 1991-10-15 | Halliburton Company | Control apparatus and method responsive to a changing stimulus |
| US5287741A (en) * | 1992-08-31 | 1994-02-22 | Halliburton Company | Methods of perforating and testing wells using coiled tubing |
| WO1996024745A2 (en) * | 1995-02-09 | 1996-08-15 | Baker Hughes Incorporated | Computer controlled downhole tools for production well control |
| DE69531747D1 (en) * | 1995-07-25 | 2003-10-16 | Nowsco Well Service Inc | SECURED METHOD AND DEVICE FOR FLUID TRANSPORT WITH WINDED PIPE, WITH APPLICATION IN TESTING DRILL BODIES |
| US20110168389A1 (en) * | 2010-01-08 | 2011-07-14 | Meijs Raymund J | Surface Controlled Downhole Shut-In Valve |
-
2016
- 2016-03-11 US US15/068,101 patent/US20160273347A1/en not_active Abandoned
- 2016-03-11 CA CA2977420A patent/CA2977420A1/en not_active Abandoned
- 2016-03-11 WO PCT/US2016/022062 patent/WO2016145340A1/en active Application Filing
- 2016-03-11 EP EP16713203.4A patent/EP3268582A1/en not_active Withdrawn
- 2016-03-11 CN CN201680014885.8A patent/CN107567532A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070044960A1 (en) * | 2005-09-01 | 2007-03-01 | Lovell John R | Methods, systems and apparatus for coiled tubing testing |
| CN1804370A (en) * | 2005-12-09 | 2006-07-19 | 辽河石油勘探局 | Cable controlled separate layer production and test technology for oil well |
| CN201090212Y (en) * | 2007-04-05 | 2008-07-23 | 北京华能通达能源科技有限公司 | Sleeve well cable pump-exhausting type formation sampler |
| CN103334744A (en) * | 2013-07-23 | 2013-10-02 | 北京环鼎科技有限责任公司 | Cable formation tester |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022036A (en) * | 2019-10-23 | 2020-04-17 | 核工业北京化工冶金研究院 | Method for detecting damage of well pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160273347A1 (en) | 2016-09-22 |
| EP3268582A1 (en) | 2018-01-17 |
| WO2016145340A1 (en) | 2016-09-15 |
| CA2977420A1 (en) | 2016-09-15 |
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Application publication date: 20180109 |