CN106089173A - A kind of completion mode with protection reservoir packing function - Google Patents
A kind of completion mode with protection reservoir packing function Download PDFInfo
- Publication number
- CN106089173A CN106089173A CN201610456915.2A CN201610456915A CN106089173A CN 106089173 A CN106089173 A CN 106089173A CN 201610456915 A CN201610456915 A CN 201610456915A CN 106089173 A CN106089173 A CN 106089173A
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- reservoir
- bucket
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- liquid
- connection
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/116—Gun or shaped-charge perforators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/255—Methods for stimulating production including the injection of a gaseous medium as treatment fluid into the formation
Abstract
The present invention relates to a kind of completion mode with protection reservoir packing function, mainly comprise the steps that 1. drilling wells: drill layer reservoir and to finishing drilling well depth or drill reservoir and be not drilled into finishing drilling well depth or brill leaves reservoir and do not drills reservoir；2. well logging；3. open-hole shooting；4. build gear: keep off at the built-in meter liquid that erects of well；5. high enegry gas fracturing: at least one of which reservoir is implemented high enegry gas fracturing at least one times, forms man-made fracture；If 6. step one drilling well selects to drill reservoir and be not drilled into finishing drilling well depth or brill leaves reservoir and do not drills reservoir, then continue drilling well to finishing drilling well depth；7. well cementation: form cement sheath in the annular space between reservoir sleeve pipe and well；8. well-case perforating: set up the duct between reservoir and pit shaft；9. go into operation or stake.The completion mode short construction period of the present invention, operation is few, and expense is low；Absorbability and the percolation ability of reservoir can be greatly improved by completion mode of the present invention, there is the highest economic benefit.
Description
Technical field
The invention belongs to oil, natural gas, coal bed gas, underground heat and can mineral resources exploration development field such as ground leaching etc., specifically
Relate to a kind of completion mode with protection reservoir packing function.
Background technology
At oil, natural gas, coal bed gas, underground heat and can be in mineral resources exploration development process such as ground leaching etc., well-case perforating is complete
Well is completion mode the most extensive and main.So-called well-case perforating completion drills reservoir exactly to drilled well
Deeply, under enter reservoir sleeve pipe to bottom reservoir, inject cement slurry cementing, cement mortar is frozen into cement sheath (annulated column outside reservoir sleeve pipe
Shape Behavior of Hardened Cement Paste) play sealing reservoir sleeve pipe and the effect of packing reservoir, then it is shot through reservoir sleeve pipe, cement sheath by perforation and wears
Reservoir certain depth thoroughly, it is established that seepage channel.
In order to improve yield and injectability, generally implement after perforation fracturing, high enegry gas fracturing, squeeze activated water,
The reservoir reconstruction measures such as acidifying or acid fracturing.Reservoir reconstruction measure is mainly pressed into its high pressure aperture being had, height,
Active dissolution and acid solution corrosion etc. act on, and produce man-made fracture in the near wellbore zone of reservoir, increase absorption area and seepage area,
Dissolve corrosion external immersion material, corrosion cement, charges, crack slotted wall and hole hole wall, connect and expand pre-existent pore
And primary fracture, releasing blocking, improve absorbability and the percolation ability of reservoir, this process is referred to as reservoir reconstruction measure.
But, above-mentioned reservoir reconstruction measure can bring two problems: first is that pressure is worn and corrosion cement sheath；Second be
The man-made fracture that near wellbore zone produces can exceed reservoir, extends to reservoir other interval up and down.This can cause reservoir upper and lower with it
The interlayer of interval is ganged up, and makes reservoir packing miopragia or inefficacy.And reservoir packing function once weakens or lost efficacy, thereupon
Be highlighting of interlayer interference and interlayer contradiction, affect and restrict reservoir yield and flood effectiveness.Ratio is more typical: one is bottom water
The bottom water of oil reservoir gangs up passage coning along interlayer, makes moisture content raise, and oil production declines, and an even water outlet is the most fuel-displaced.Two is note
When well gangs up well section at interlayer, oil reservoir upper and lower part exists water absorption and permeability is higher than or is equivalent to the interval of oil reservoir, inject
Water then along interlayer gang up channel part or fully enter water absorption and permeability higher than or be equivalent to the interval of oil reservoir, form poor efficiency
Or inefficient water injection.Use the Technology such as water blockoff, profile control, administer and ganged up bottom water cone well, the inefficient water caused by interlayer,
Especially low-permeability oil deposit, limited resource is more, and the effect of acquirement is limited.
One of conventional reservoir reconstruction measure high enegry gas fracturing is to utilize propellant powder burning to produce high temperature height
Calm the anger body, form chicken-wire cracking in reservoir near wellbore zone, expand seepage area and absorption area, link up primary fracture and original hole
Road, improves reservoir yield and absorbability.Its surge pressure formed and pressure time be cracking initiation and extension important because of
Element, and surge pressure and pressure time are associated with combustion rate of powder.The rule that combustion rate of powder is followed is: u=u1pr.In formula, u is
Combustion rate of powder, u1For powder burning coefficient, p is ambient pressure, and r is pressure coefficient.The i.e. height of ambient pressure, determines gunpowder combustion
The height of speed.In high enegry gas fracturing construction, ambient pressure is generally and is kept off by high energy gas fracture bomb body above fluid column liquid
Set up and control, i.e. ambient pressure height depend on liquid gear height.The well of well-case perforating completion, it is common that use pumping, gas
The modes such as act and oil well pump pump drainage, reduce liquid gear, and inject liquid, rising liquid gear to pit shaft, control liquid gear.Pumping,
There is a lot of shortcoming in the modes such as gaslift and oil well pump pump drainage, one is supporting with formation testing, well workover and oil recovery, not at the model of drilling engineering
Enclose；Two is the construction completed by special equipment and special process；Three is long construction period, and operation is many, costly.
In the pit shaft of well-case perforating completion, the high enegry gas fracturing of enforcement have the disadvantage that one be by perforation diameter,
Hole count and the restriction of Kong Mi, the area of passage that perforation is formed is less, and the gases at high pressure entering reservoir near wellbore zone are less, in order to carry
High high enegry gas fracturing effect, gunpowder consumption, combustion rate of powder and liquid gear are often close to ultimate value；Two is that relative perforation is formed
Area of passage, perforation thickness is relatively big, and the stream thickness excessively causing gases at high pressure entrance reservoir near wellbore zone is the biggest；Three is due to reservoir
Casing profile is less, and the cross section that gases at high pressure diffuse up is the least.So, pressure wears cement sheath and man-made fracture to reservoir extension
Probability and the degree stretched are bigger.
Pressure and water absorption test result show: during high enegry gas fracturing, the high temperature and high pressure gas post that powder burning produces, its
Bottom wellbore pressure is slightly above top；But, pressure wears cement sheath, the probability causing interlayer to gang up and degree, is but that bottom is obvious
Higher than top.From mechanism and operating mode angle analysis, produce one of reason of such result and phenomenon: bottom pit shaft is airtight
, and be full of and can be considered incoercible liquid, pressure release is slow, and the pressure time is long；Top pit shaft is open, Er Qiegao
Body of calming the anger is diffused up by lifting liquid gear, and pressure release is fast, and the pressure time is short.
High enegry gas fracturing is many to be implemented in the pit shaft of well-case perforating completion, and Technology and equipment all overlap for adaptation
Pipe perforation completion pit shaft.If being directly applied to bore hole reservoir, owing to decreasing the obstruct of sleeve pipe, cement sheath, lose
Perforated interval flows the restriction of thickness to crossing, and one is that man-made fracture is controlled difficulty relatively greatly, the probability that man-made fracture extends outside reservoir
Increase with degree；Two is that high energy gas fracture bomb remains are likely retained in well, brings the unfavorable of cleaning well.
Summary of the invention
It is an object of the invention to provide a kind of completion mode with protection reservoir packing function, it is possible to decrease or avoid because of water
Defeat and split, high enegry gas fracturing, squeeze the reservoir reconstruction measure such as activated water, acidifying and acid fracturing and the reservoir packing function that causes
The problem weakened or lose.
The technical scheme is that
A kind of completion mode with protection reservoir packing function, specifically includes following steps:
Step one: drilling well: drill layer reservoir to finishing drilling well depth or drill reservoir and be not drilled into finishing drilling well depth or brill open reservoir and not
Drill reservoir；
Step 2: well logging: comprehensive logging；
Step 3: open-hole shooting: set up the duct of desired depth in reservoir near wellbore zone；
Step 4: build gear: keep off at the built-in meter liquid that erects of well, high enegry gas fracturing parameter is calculated and determined according to design liquid shelves；
Step 5: high enegry gas fracturing: at least one of which reservoir is implemented high enegry gas fracturing at least one times, in reservoir near wellbore zone
Form man-made fracture；
Step 6: if step one drilling well selects to drill reservoir and be not drilled into finishing drilling well depth or brill leaves reservoir and do not drills reservoir, then
Continue drilling well to finishing drilling well depth；
Step 7: well cementation: form cement sheath in the annular space between reservoir sleeve pipe and well；
Step 8: well-case perforating: be shot through reservoir sleeve pipe and cement sheath and penetrate reservoir to desired depth, set up reservoir and pit shaft it
Between duct；
Step 9: go into operation or bet；
Step 10: if pilot production or injection test are not up to pre-provisioning request, then implement reservoir reconstruction measure；
Step 11: after reservoir reconstruction, carries out secondary operation or secondary stake.
Filing in described step 3 specifically includes:
When the original liquid-column height in well is more than design liquid shelves, set up design liquid shelves by tubing string fluid-discharge therapy；
When the original liquid-column height in well is less than design liquid shelves, in well, injects design flow liquid, set up design liquid shelves；
When well depth is less than design liquid gear, adjust the dose of high enegry gas fracturing, combustion speed, pressure release area parameter.
Described when the original liquid-column height in well is more than design liquid shelves, erected well is built-in by tubing string fluid-discharge therapy
Meter liquid shelves, concrete grammar is as follows:
From well, enter to join bucket axle-linked cable-car, liquid level in connection bucket axle-linked cable-car enters well, the liquid in well enters annular space,
Original fluid column in annular space rises until excessive from well head；Enter to join bucket axle-linked cable-car under continuation to shaft bottom or planned well section, unlatching
Being arranged on the switching mechanism on connection bucket, the liquid in annular space flows in connection bucket axle-linked cable-car, and the fluid column in annular space reduces, connection bucket connection
Make the fluid column in tubing string to rise, when forming liquid shelves after the fluid column in annular space with the fluid column balance in connection bucket axle-linked cable-car:
If the liquid gear height formed is less than design liquid shelves, in connection bucket axle-linked cable-car, injects the liquid of design flow, make connection bucket join
Reach in making tubing string and in annular space to design liquid gear height；
If the liquid gear height formed in axle-linked cable-car and in annular space is higher than design liquid shelves, then adjust the medicine with high enegry gas fracturing
Amount, combustion speed and pressure release area parameter.
Described connection bucket axle-linked cable-car includes connection bucket and the tubing string being integrally connected；Described connection bucket can be selected for slide connection bucket,
Clash into connection bucket, carry a gun connection bucket or band bullet connection bucket, wherein:
The connection bucket that slides even includes determining bucket and being arranged at sliding bucket, slide bar, jack rod sleeve, sealing member, position-limit mechanism and the guiding determining in bucket
Mechanism；Described sliding bucket and determine bucket and be equipped with and organize intercommunicating pore more；Described sliding bucket drum head, to determine bucket drum head airtight, at sliding bucket drum head
Connecting slide bar, determine bucket drum head and be provided with jack rod sleeve, slide bar is fed through jack rod sleeve and stretches out, and is sliding bucket and is determining to be provided with between bucket vectoring aircraft
Structure, is sliding bucket and is determining to be provided with sealing member between bucket, slide bar and jack rod sleeve；Described sliding bucket can be under the guiding guiding mechanism
Determining linear slide in bucket, when the intercommunicating pore on sliding bucket overlaps because sliding bucket slides with the intercommunicating pore determined on bucket, the connection bucket that slides is opened；
Otherwise, the connection bucket that slides cuts out；
Clash into connection bucket include determining bucket and be arranged at and determine holding in bucket and hit seat and impact hammer；It is provided with organizes intercommunicating pore more determining bucket sidewall,
Determine bottom of the barrel airtight；Described holding is hit seat and is included that blind circle, upper pressing cap, lower pressing cap, sealing member and baffle plate, described blind circle are arranged on
Upper pressing cap top constitutes entirety with upper pressing cap, and described baffle plate is the meniscus that the pressure friable material such as glass, pottery is made
Body or convexoconcave lens body, the one or both sides of baffle plate are provided with low force grid groove, described baffle plate convex surface downwardly lower pressing cap；Institute
The sealing member stated is fastened by upper and lower pressure cap, and sealing member hits seat be divided into the chamber of upper and lower two mutual packings by holding, upper and lower double
To the circulation of blocking-up liquid, clash into connection bucket and close；Smash baffle plate with described impact hammer, hold and hit seat connection, clash into connection bucket and open；
Perforating gun or high energy gas fracture bomb is connected, carry a gun connection bucket or the band described in composition at the described sliding bucket drum head sliding connection bucket
Bullet connection bucket.
The many groups intercommunicating pore arranged on described bucket is arranged in a matrix；In many group intercommunicating pores, the aperture at middle part is big, to
Above, downward aperture is little；The pitch-row at middle part is little, and upwards, down bore is away from greatly；Middle part hole count many, upwards, downward hole count few.
Beneficial effects of the present invention:
1. the completion mode of the present invention is before reservoir extremely well cementation left by brill, when reservoir is bore hole state, by reservoir is implemented high energy
Gas pressure break: first is after well cementation, it is to avoid implement reservoir reconstruction measure, or reduce the intensity of reservoir reconstruction measure；Avoid
Pressure is worn and corrosion cement sheath, or reduces pressure and wear and the degree of corrosion cement sheath.By protection cement sheath, protect cement
The packing function that reservoir is had by ring；Second is the longitudinal extension controlling the man-made fracture that high enegry gas fracturing produces, and prevents people
Work crack causes interlayer to gang up, the packing function of protection reservoir；
2. the completion mode short construction period of the present invention, operation is few, and expense is low；Can be significantly by completion mode of the present invention
Improve absorbability and the percolation ability of reservoir, there is the highest economic benefit.
Accompanying drawing explanation
Fig. 1 be the present invention drill layer reservoir to drilled well deep in the case of use band bullet connection bucket to carry out building gear, high energy gas
Pressure break and the schematic diagram of well cementation operation；
Fig. 2 for for the present invention drill reservoir and be not drilled into finishing drilling well depth or brill open reservoir and do not drill reservoir in the case of use band
Bullet connection bucket carries out building gear, high enegry gas fracturing and the schematic diagram of well cementation operation；
In figure, 1-well, 2-reservoir, 3-shaft bottom, 4-slides and joins bucket, the blind circle of 5-, 6-well liquid, 7-axle-linked cable-car, 8-high energy gas
Pressure breaking bullet, 9-lighter, 10-localizer, 11-cable, 12-cement sheath, 13-holds and hits seat, 14-impact hammer.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further detailed:
Embodiment 1:
A kind of have protection reservoir packing function completion mode, bore open reservoir 2 to cement the well before, when reservoir 2 is bore hole state, right
At least one of which reservoir 2 implements high enegry gas fracturing at least one times, forms man-made fracture in reservoir 2 near wellbore zone, including following step
Rapid:
Step one: drilling well: drill layer reservoir 2 to a finishing drilling well depth；
Step 2: perforation: set up the duct of desired depth in reservoir 2 near wellbore zone；
Step 3: build gear: keep off at the built-in meter liquid that erects of well 1, high enegry gas fracturing parameter is calculated and determined according to relating to liquid shelves；
Step 4: high enegry gas fracturing: at least one of which reservoir 2 is implemented high enegry gas fracturing at least one times, on reservoir 2 nearly well ground
Band forms man-made fracture；
Step 5: well cementation: form cement sheath 12 in the annular space between reservoir 2 sleeve pipe and well 1；
Step 6: perforation: be shot through reservoir 2 sleeve pipe and cement sheath 12 and penetrate reservoir 2 to desired depth, setting up reservoir 2 and pit shaft
Between duct；
Step 7: go into operation or bet；
Step 8: if pilot production or injection test are not up to pre-provisioning request, then implement reservoir 2 modification measures；
Step 9: after reservoir 2 transformation, carries out secondary operation or secondary stake.
Embodiment 2:
A kind of completion mode with protection reservoir packing function, drills reservoir 2 and is not drilled into finishing drilling well depth, and reservoir 2 is bore hole
During state, at least one of which reservoir 2 is implemented high enegry gas fracturing at least one times, form man-made fracture, bag in reservoir 2 near wellbore zone
Include following steps:
Step one: drilling well: drill reservoir 2 and be not drilled into finishing drilling well depth；
Step 2: perforation: set up the duct of certain depth in reservoir 2 near wellbore zone；
Step 3: build gear: keep off at the built-in meter liquid that erects of well 1, high enegry gas fracturing parameter is calculated and determined according to relating to liquid shelves；
Step 4: high enegry gas fracturing: at least one of which reservoir 2 is implemented high enegry gas fracturing at least one times, on reservoir 2 nearly well ground
Band forms man-made fracture；
Step 5: continue drilling well to finishing drilling well depth；
Step 6: well cementation: form cement sheath 12 in the annular space between reservoir 2 sleeve pipe and well 1；
Step 7: perforation: be shot through reservoir 2 sleeve pipe and cement sheath 12 and penetrate reservoir 2 to desired depth, setting up reservoir 2 and pit shaft
Between seepage flow duct；
Step 8: go into operation or bet；
Step 9: if pilot production or injection test are not up to pre-provisioning request, then implement reservoir 2 modification measures；
Step 10: after reservoir 2 transformation, carries out secondary operation or secondary stake.
Embodiment 3:
A kind of completion mode with protection reservoir packing function, bores and opens reservoir 2 and do not drill reservoir 2, and reservoir 2 bores to open and is partly
During bore hole state, implement high enegry gas fracturing at least one times to boring the reservoir 2 opened and do not drill, formed in reservoir 2 near wellbore zone
Man-made fracture, comprises the following steps:
Step one: drilling well: bore and open reservoir 2 and do not drill reservoir 2；
Step 2: perforation: set up the duct of desired depth in reservoir 2 near wellbore zone；
Step 3: build gear: keep off at the built-in meter liquid that erects of well 1, high enegry gas fracturing parameter is calculated and determined according to relating to liquid shelves；
Step 4: high enegry gas fracturing: implement high enegry gas fracturing at least one times, at reservoir 2 to boring the reservoir 2 opened and do not drill
Near wellbore zone forms man-made fracture；
Step 5: continue drilling well to finishing drilling well depth；
Step 6: well cementation: form cement sheath 12 in the annular space between reservoir 2 sleeve pipe and well 1；
Step 7: perforation: be shot through reservoir 2 sleeve pipe and cement sheath 12 and penetrate reservoir 2 to desired depth, setting up reservoir 2 and pit shaft
Between seepage flow duct；
Step 8: go into operation or bet；
Step 9: if pilot production or injection test are not up to pre-provisioning request, then implement reservoir 2 modification measures；
Step 10: after reservoir 2 transformation, carries out secondary operation or secondary stake.
In 3 above-mentioned embodiments, when reservoir properties or reservoir state meet design require time, the most do not implement described
Step 2: perforation.
In 3 above-mentioned embodiments, when the original liquid-column height of well liquid 6 in well 1 meets design liquid shelves requirement, the most not
Step 3 described in enforcement: file.
In 3 above-mentioned embodiments, step 3: the concrete grammar building gear is as follows:
Situation is 1.: when the original liquid-column height of well liquid 6 in well 1 is more than design liquid shelves, set up design by tubing string fluid-discharge therapy
Liquid shelves；
The concrete grammar of tubing string fluid-discharge therapy is as follows:
Entering the axle-linked cable-car 7 with switching mechanism for 1 from well, axle-linked cable-car 7 enters liquid level in well 1, the liquid in well 1
Entering annular space, the original fluid column of well liquid 6 in annular space rises until excessive from well head；Enter axle-linked cable-car 7 to shaft bottom 3 under continuation or set
Meter well section, opens and is arranged on the switching mechanism on axle-linked cable-car 7, and the liquid in annular space flows in axle-linked cable-car 7, the liquid in annular space
Post reduces, and the fluid column in axle-linked cable-car 7 rises, when forming liquid shelves after the fluid column balance in the fluid column in annular space with axle-linked cable-car 7:
If the liquid gear height formed is less than design liquid shelves, injects the liquid of design flow to axle-linked cable-car 7, make connection bucket axle-linked cable-car
Reach in 7 and in annular space to design liquid gear height；
If the liquid gear height formed in axle-linked cable-car 7 and in annular space is higher than design liquid shelves, then adjust and high enegry gas fracturing
Dose, combustion speed and pressure release area parameter.
Situation is 2.: when the original liquid-column height of well liquid 6 in well 1 is less than design liquid shelves, fill into design flow in well 1
Liquid, sets up design liquid shelves；
Situation is 3.: when well depth is less than design liquid gear, adjust the dose of high enegry gas fracturing, combustion speed, pressure release area parameter.
In 3 above-mentioned embodiments, one time axle-linked cable-car 7 can be used to perforation of the present invention, built gear, high energy
At least two operations in gas pressure break and well cementation.
Above-mentioned axle-linked cable-car 7 widenable to stacker axle-linked cable-car, determine bucket axle-linked cable-car and connection bucket axle-linked cable-car, wherein:
Stacker axle-linked cable-car is connected with axle-linked cable-car 7 by stacker and forms；
Determine bucket axle-linked cable-car and be connected with axle-linked cable-car 7 and form by determining bucket, stacker；
Connection bucket axle-linked cable-car one is connected with axle-linked cable-car 7 by connection bucket and forms, another kind be by joining bucket, stacker is managed with connection
Post 7 connects composition.
Introduce the present invention in detail below and join the connection barrel structure of barrel axle-linked cable-car, connection bucket is provided with intercommunicating pore and switching on and shutting down
Structure, when switching mechanism cuts out, connection bucket axle-linked cable-car is that hollow is airtight, when switching mechanism is opened, connection bucket axle-linked cable-car and the external world
It it is connection.
The connection bucket of the present invention can be selected for slide connection bucket 4, clash into connection bucket, carry a gun connection bucket or band bullet connection bucket, wherein:
Clash into connection bucket include determining bucket and be arranged at and determine holding in bucket and hit seat 13 and impact hammer 14；It is provided with organizes connection more determining bucket sidewall
Hole, determines bottom of the barrel airtight；Described holding is hit seat 13 and is included blind circle 5, upper pressing cap, lower pressing cap, sealing member and baffle plate, described blind circle
5 are arranged on upper pressing cap top and upper pressing cap constitutes entirety, described baffle plate be the pressure friable material such as glass, pottery make recessed
Concave lens body or convexoconcave lens body, the one or both sides of baffle plate are provided with low force grid groove, described baffle plate convex surface downwardly under
Pressure cap；Described sealing member is fastened by upper and lower pressure cap, and sealing member hits seat 13 be divided into the chamber of upper and lower two mutual packings by holding
Room, the circulation of upper and lower two-way blocking-up liquid, clash into connection bucket and close；Smash baffle plate with described impact hammer 14, hold and hit seat 13 even
Logical, clash into connection bucket and open；
The connection bucket 4 that slides even includes determining bucket and being arranged at sliding bucket, slide bar, jack rod sleeve, sealing member, position-limit mechanism and the guiding determining in bucket
Mechanism；Described sliding bucket and determine bucket and be equipped with and organize intercommunicating pore more；Described sliding bucket drum head, to determine bucket drum head airtight, at sliding bucket drum head
Connecting slide bar, determine bucket drum head and be provided with jack rod sleeve, slide bar is fed through jack rod sleeve and stretches out, and is sliding bucket and is determining to be provided with between bucket vectoring aircraft
Structure, is sliding bucket and is determining to be provided with sealing member between bucket, slide bar and jack rod sleeve；Described sliding bucket can be under the guiding guiding mechanism
Determining linear slide in bucket, when the intercommunicating pore on sliding bucket overlaps because sliding bucket slides with the intercommunicating pore determined on bucket, the connection bucket 4 that slides is opened
Open；Otherwise, the connection bucket 4 that slides cuts out；
Join bucket 4 described slip or clash into connection bottom of the barrel connection perforating gun or high energy gas fracture bomb 8, the connection that carries a gun described in composition
Bucket or band bullet connection bucket.
The many groups intercommunicating pore arranged on described bucket is arranged in a matrix；In many group intercommunicating pores, the aperture at middle part is big, to
Above, downward aperture is little；The pitch-row at middle part is little, and upwards, down bore is away from greatly；Middle part hole count many, upwards, downward hole count few.
For the situation of embodiment 1, can complete to build gear, high enegry gas fracturing and three operations of well cementation with band bullet connection bucket,
Being referred to as detonation thribble post, detailed process sees Fig. 1, and wherein, Fig. 1 (a) is that to build gear schematic diagram, Fig. 1 (b) be high energy gas pressure
Split schematic diagram, Fig. 1 (c) is well cementation schematic diagram.
For the situation of embodiment 2 or 3, can complete to build gear and two operations of high enegry gas fracturing, quilt with band bullet connection bucket
Being referred to as detonation duplex tubing string, detailed process sees Fig. 2, and wherein, Fig. 2 (a) is that to build gear schematic diagram, Fig. 2 (b) be high enegry gas fracturing
Schematic diagram, Fig. 2 (c) are well cementation schematic diagrams.
In step 4: in high enegry gas fracturing, how to control man-made fracture scope, to prevent man-made fracture from downwardly extending be high
The emphasis of energy gas pressure break operation and difficult point, the present invention is solved by following Several Measures:
(1). the many groups intercommunicating pore arranged on the connection bucket of axle-linked cable-car 7 provides the high temperature and high pressure gas that liquid and powder burning produce
The passage flowed in and out, the high temperature and high pressure gas of control powder burning generation and the outflow of liquid and inflow, by controlling fire
The high temperature and high pressure gas elution volume of medicine burning generation and earial drainage height, and control the extension of man-made fracture, priority control is artificial
The longitudinal extension in crack.
(2). determine bucket and connection bucket drum head block and limit powder burning produce high temperature and high pressure gas flow downward out and expand
Dissipate, control man-made fracture and downwardly extend.
(3). described step 4 high enegry gas fracturing is under reservoir 2 is for bore hole state, does not has during cement sheath 12 to implement
, by the high temperature and high pressure gas range of scatter that powder burning is produced, elution volume and the control of pressure release height, by produce
Man-made fracture controls within reservoir 2.
(4). after well 1 running string or stacker axle-linked cable-car to reservoir 2 top, in tubing string or stacker connection is made
Enter localizer 10, lighter 9 and high energy gas fracture bomb 8 under in tubing string, and make high energy gas fracture bomb 8 through tubing string or undertaking
Reservoir 2, to the precalculated position of reservoir 2 well section, is implemented high enegry gas fracturing by seat axle-linked cable-car end.By tubing string or stacker
Axle-linked cable-car limits the high temperature and high pressure gas of powder burning generation and diffuses up, thus limits man-made fracture and upwardly extend.Boring
Wear reservoir 2 and be not drilled into finishing drilling well depth or time brill opens reservoir 2 and do not drills reservoir 2, block powder burning by current shaft bottom 3 and produce
Raw high temperature and high pressure gas spreads downwards, thus limits man-made fracture and downwardly extend.
It addition, the high enegry gas fracturing of the present invention includes rope transmission high enegry gas fracturing and tubing string transmission high energy gas pressure
Splitting, rope transmission high enegry gas fracturing and tubing string transmission high enegry gas fracturing are known to those skilled in the art.
Wherein:
Rope transmission high enegry gas fracturing is localizer 10, lighter 9 and high energy gas fracture bomb 8 to be connected with transmission rope,
With devices such as transmission rope conveying localizer 10, lighter 9, high energy gas fracture bombs 8 to predetermined well section, draw on ground or down-hole
Combustion high energy gas fracture bomb 8, finally trips out the devices such as localizer 10, lighter 9, high energy gas fracture bomb 8 frame with transmission rope,
Complete high enegry gas fracturing；
Tubing string transmission high energy gas fracturing device is lighter 9, high energy gas fracture bomb 8 to be connected with tubing string, carries with tubing string
The devices such as lighter 9, high energy gas fracture bomb 8 are to predetermined well section, and ignite high energy gas fracture bomb 8 on ground or down-hole, finally
Trip out the devices such as tubing string, lighter 9, high energy gas fracture bomb 8 frame, complete high enegry gas fracturing；
In the present invention, described annular space, tubing string, transmission rope, current shaft bottom are known to those skilled in the art.
Wherein:
Described annular space is that tubing string from well 1 or pit shaft is outer at tubing string with well 1 or pit shaft, shape in well 1 or in pit shaft
The annular space become；
Described tubing string is by oil pipe, drilling rod or telescopic joint forms；
Described transmission rope is cable 11, steel wire or steel wire rope；
Described current shaft bottom is the shaft bottom before non-finishing drilling.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And the conversion of any equivalence that technical solution of the present invention is taked, the claim being the present invention is contained.
Claims (5)
1. a completion mode with protection reservoir packing function, it is characterised in that:
Specifically include following steps:
Step one: drilling well: drill layer reservoir to finishing drilling well depth or drill reservoir and be not drilled into finishing drilling well depth or brill open reservoir and not
Drill reservoir；
Step 2: well logging: comprehensive logging；
Step 3: open-hole shooting: set up the duct of desired depth in reservoir near wellbore zone；
Step 4: build gear: keep off at the built-in meter liquid that erects of well, high enegry gas fracturing parameter is calculated and determined according to design liquid shelves；
Step 5: high enegry gas fracturing: at least one of which reservoir is implemented high enegry gas fracturing at least one times, in reservoir near wellbore zone
Form man-made fracture；
Step 6: if step one drilling well selects to drill reservoir and be not drilled into finishing drilling well depth or brill leaves reservoir and do not drills reservoir, then
Continue drilling well to finishing drilling well depth；
Step 7: well cementation: form cement sheath in the annular space between reservoir sleeve pipe and well；
Step 8: well-case perforating: be shot through reservoir sleeve pipe and cement sheath and penetrate reservoir to desired depth, set up reservoir and pit shaft it
Between duct；
Step 9: go into operation or bet；
Step 10: if pilot production or injection test are not up to pre-provisioning request, then implement reservoir reconstruction measure；
Step 11: after reservoir reconstruction, carries out secondary operation or secondary stake.
The completion mode with protection reservoir packing function the most according to claim 1, it is characterised in that:
Filing in described step 3 specifically includes:
When the original liquid-column height in well is more than design liquid shelves, set up design liquid shelves by tubing string fluid-discharge therapy；
When the original liquid-column height in well is less than design liquid shelves, in well, injects design flow liquid, set up design liquid shelves；
When well depth is less than design liquid gear, adjust the dose of high enegry gas fracturing, combustion speed, pressure release area parameter.
The completion mode with protection reservoir packing function the most according to claim 2, it is characterised in that:
Described when the original liquid-column height in well is more than design liquid shelves, erect meter liquid by tubing string fluid-discharge therapy well is built-in
Shelves, concrete grammar is as follows:
From well, enter to join bucket axle-linked cable-car, liquid level in connection bucket axle-linked cable-car enters well, the liquid in well enters annular space,
Original fluid column in annular space rises until excessive from well head；Enter to join bucket axle-linked cable-car under continuation to shaft bottom or planned well section, unlatching
Being arranged on the switching mechanism on connection bucket, the liquid in annular space flows in connection bucket axle-linked cable-car, and the fluid column in annular space reduces, connection bucket connection
Make the fluid column in tubing string to rise, when forming liquid shelves after the fluid column in annular space with the fluid column balance in connection bucket axle-linked cable-car:
If the liquid gear height formed is less than design liquid shelves, in connection bucket axle-linked cable-car, injects the liquid of design flow, make connection bucket join
Reach in making tubing string and in annular space to design liquid gear height；
If the liquid gear height formed in axle-linked cable-car and in annular space is higher than design liquid shelves, then adjust the medicine with high enegry gas fracturing
Amount, combustion speed and pressure release area parameter.
The completion mode with protection reservoir packing function the most according to claim 3, it is characterised in that:
Described connection bucket axle-linked cable-car includes connection bucket and the tubing string being integrally connected；Described connection bucket can be selected for slide connection bucket, shock
Join bucket, carry a gun connection bucket or band bullet connection bucket, wherein:
The connection bucket that slides even includes determining bucket and being arranged at sliding bucket, slide bar, jack rod sleeve, sealing member, position-limit mechanism and the guiding determining in bucket
Mechanism；Described sliding bucket and determine bucket and be equipped with and organize intercommunicating pore more；Described sliding bucket drum head, to determine bucket drum head airtight, at sliding bucket drum head
Connecting slide bar, determine bucket drum head and be provided with jack rod sleeve, slide bar is fed through jack rod sleeve and stretches out, and is sliding bucket and is determining to be provided with between bucket vectoring aircraft
Structure, is sliding bucket and is determining to be provided with sealing member between bucket, slide bar and jack rod sleeve；Described sliding bucket can be under the guiding guiding mechanism
Determining linear slide in bucket, when the intercommunicating pore on sliding bucket overlaps because sliding bucket slides with the intercommunicating pore determined on bucket, the connection bucket that slides is opened；
Otherwise, the connection bucket that slides cuts out；
Clash into connection bucket include determining bucket and be arranged at and determine holding in bucket and hit seat and impact hammer；It is provided with organizes intercommunicating pore more determining bucket sidewall,
Determine bottom of the barrel airtight；Described holding is hit seat and is included that blind circle, upper pressing cap, lower pressing cap, sealing member and baffle plate, described blind circle are arranged on
Upper pressing cap top constitutes entirety with upper pressing cap, and described baffle plate is the meniscus that the pressure friable material such as glass, pottery is made
Body or convexoconcave lens body, the one or both sides of baffle plate are provided with low force grid groove, described baffle plate convex surface downwardly lower pressing cap；Institute
The sealing member stated is fastened by upper and lower pressure cap, and sealing member hits seat be divided into the chamber of upper and lower two mutual packings by holding, upper and lower double
To the circulation of blocking-up liquid, clash into connection bucket and close；Smash baffle plate with described impact hammer, hold and hit seat connection, clash into connection bucket and open；
Perforating gun or high energy gas fracture bomb is connected, carry a gun connection bucket or the band described in composition at the described sliding bucket drum head sliding connection bucket
Bullet connection bucket.
The completion mode with protection reservoir packing function the most according to claim 4, it is characterised in that:
The many groups intercommunicating pore arranged on described bucket is arranged in a matrix；In many group intercommunicating pores, the aperture at middle part is big, upwards, to
Lower aperture is little；The pitch-row at middle part is little, and upwards, down bore is away from greatly；Middle part hole count many, upwards, downward hole count few.
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| CN106089173B (en) | 2018-08-07 |
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