CN110056333A - Hydraulic directional abrasive perforating and slot integrated apparatus and its application method - Google Patents
Hydraulic directional abrasive perforating and slot integrated apparatus and its application method Download PDFInfo
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- CN110056333A CN110056333A CN201910222697.XA CN201910222697A CN110056333A CN 110056333 A CN110056333 A CN 110056333A CN 201910222697 A CN201910222697 A CN 201910222697A CN 110056333 A CN110056333 A CN 110056333A
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- Prior art keywords
- orientation
- nozzle
- slot
- integrated apparatus
- spray gun
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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
- E21B43/11—Perforators; Permeators
- E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
-
- 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
Abstract
The present invention relates to a kind of hydraulic directional abrasive perforatings and slot integrated apparatus and its application method.Its technical solution is: each component is concatenated by tubing thread, centralizer connects down-hole high pressure movement and speed control system by variable buckle connector, the lower end of down-hole high pressure movement and speed control system connects a group or more of cutting assemblies, every group of cutting assembly is made of the telescopic centralizer of high-pressure rotary, orientation spray gun and the telescopic centralizer of high-pressure rotary, every group of cutting assembly is connected by tubing nipple, and end is connected to sand screen and guider by check valve.Beneficial effect is: the hydraulic sand blasting oriented perforating and fixed length, orientation slot of multiple layers of position can be achieved, and oriented perforating and orientation slot working method can free switchings；In addition, the compacting that hydraulic jet perforation and slot not will cause near wellbore formation damages, the recovery ratio of reservoir is significantly increased.
Description
Technical field
The present invention relates to the completion system and application method in a kind of oil-gas field development field, in particular to a kind of waterpower is fixed
To abrasive perforating and slot integrated apparatus and its application method.
Background technique
Perforation, pressure break are to improve a kind of common methods of the rate of oil and gas recovery, and major part perforation is all based on conventional cumulative at present
Perforation (shell perforation), and pattern is generally uniform screw holding, when this results in subsequent fracturing work, reservoir is split
Seam moves towards unpredictable, and then crack is made between different sections to occur being overlapped interspersed phenomenon, leads to that fracturing effect is poor, perforation completion
Degree is low, low output and perforation wear the consequences such as deep deficiency, causes operation effect limited, therefore conventional perforation technology is washed in a pan
It eliminates instead oriented perforating technology in order to further increase seepage area, improves reservoir permeability at the same time,
Orientation slotting technique can be used；
Above two technical approach can not replace mutually, but be each provided with its advantage and disadvantage:
(1) oriented perforating technology: its advantage is that the activity duration is short, fluid volume is few, cost is relatively low, and to intensity effect very little；It lacks
Point is that there may be eyelet blocking, reservoirs, and the problems such as area is small, oil gas flow resistance is big is connected to pit shaft.
(2) orient slotting technique: its advantage is that reservoir is connected to pit shaft, area is big, and it is fixed to be better than to the control volume of reservoir
To perforating technology, and oil gas flow resistance can be further decreased, the promotion amplitude of reservoir permeability is bigger；The disadvantage is that when operation
Between compared with long, fluid volume big, higher cost, and have an adverse effect to a certain extent to intensity.
Therefore, it is necessary to which oriented perforating technology to be optimized to integrated, exploitation integrated technique equipment with orientation slotting technique,
According to casing programme and reservoir characteristics, the technology that can be applicable in different layers position flexible choice mentions for the Efficient Development of petroleum resources
For a kind of completely new solution.
Summary of the invention
The purpose of the present invention is to drawbacks described above of the existing technology, provide a kind of hydraulic directional abrasive perforating with
Slot integrated apparatus and its application method.
A kind of hydraulic directional abrasive perforating and slot integrated apparatus that the present invention mentions, technical solution is: including helping
Positive device (1), variable buckle connector (2), down-hole high pressure movement and speed control system (3), are determined the telescopic centralizer of high-pressure rotary (4)
It is constituted to spray gun (5), tubing nipple (6), check valve (7), sand screen and guider (8)；Above-mentioned component is concatenated by tubing thread,
Centralizer (1) connects down-hole high pressure movement and speed control system (3), down-hole high pressure movement and speed by variable buckle connector (2)
The lower end of control system (3) connects a group or more of cutting assemblies, and every group of cutting assembly is helped by high-pressure rotary is telescopic
Positive device (4), orientation spray gun (5) and the telescopic centralizer of high-pressure rotary (4) composition, every group of cutting assembly pass through tubing nipple (6)
Connection, and end is connected to sand screen and guider (8) by check valve (7).
Preferably, above-mentioned down-hole high pressure is mobile and speed control system (3) is by connection end cap (3-1), returning spring pipe nipple
(3-6), central rotating shaft (3-8) constitute its external structure, meanwhile, building forms the left chamber that can accommodate hydraulic oil inside it
(3-2) and right chamber (3-4) is equipped with more piece returning spring (3-7) between returning spring pipe nipple (3-6) connected two-by-two,
It is provided with spring check valve (3-3) and adjustable throttle valve (3-9) on central rotating shaft (3-8), is contacted with returning spring (3-7)
Spring bearer plate (3-5) is installed on face, makes hydraulic oil by left chamber's (3-2) one-way flow to the right side by band spring check valve (3-3)
Chamber (3-3).
Preferably, the telescopic centralizer of above-mentioned high-pressure rotary (4) is by drive end bearing bracket (4-1), ontology (4-2), rear end cap (4-7)
The installation site of bearing (4-6) is constituted with shaft (4-8), and is filled in the cavity between bearing (4-6) and shaft (4-8)
The driving torque that shaft (4-8) rotation needs can be greatly reduced by bearing (4-6) in lubricating oil；Multiple flank (4-3) welding
In ontology (4-2) outer wall, wiper block (4-5) is equipped with reset spring (4-4) in the groove of flank (4-3) between the two.
Preferably, above-mentioned orientation spray gun (5) includes orientation gun body (5-2), nozzle cage (5-3), nozzle (5-4), spray
Mouth pressure cap (5-5), it is described orientation spray gun (5) both ends tubing thread geometric center and orientation gun body (5-2) geometry in
Feel in relatively large deviation, orients spray gun (5) whole center of gravity and be partial to lower part；It is equipped in the orientation gun body (5-2) multiple
Nozzle (5-4), nozzle (5-4) are consolidated by bonding way and nozzle cage (5-3), and nozzle cage (5-3) is screwed in orientation with screw thread
On gun body (5-2), nozzle pressure cap (5-5) is combined between nozzle (5-4) entrance and nozzle cage (5-3).
Preferably, the outer wall of above-mentioned orientation gun body (5-2) is equipped with hard alloy splashproof sleeve (5-1).
Arrangement mode of the nozzle (5-4) on orientation spray gun can be circumference or screw arrangement.
Preferably, above-mentioned check valve (7) includes unidirectional valve body (7-1), ball seat (7-2), ball sealer (7-3), check valve
The inner cavity of main body (7-1) is equipped with ball seat (7-2), is cooperated by ball sealer (7-3) and ball seat (7-2), and the ball sealer (7-3)
Nitrizing Treatment is needed with the contact position ball seat (7-2), and roughness control is within Ra 0.8.
Preferably, above-mentioned sand screen is connect and is formed by sand screen (8-1) and guider (8-3) with guider (8), in filter sand
It is machined with multiple eyelets (8-2) between pipe (8-1) and guider (8-3), when reacting cycle clean-out service, flushing fluid passes through eyelet
(8-2) enter hydraulic directional abrasive perforating, in slot integrated apparatus and returns to ground.
Preferably, slot group number is controlled by the number of the orientation spray gun (5) concatenated, and every group of slot quantity is by orientation spray gun
(5) the installation number control of top nozzle, seam spacing are determined by the length of tubing nipple (6)；Seam length is moved by down-hole high pressure and speed
The length of the impulse stroke of returning spring (3-7) and left chamber (3-2) and right chamber (3-4) on control system (3) is spent to determine.
The beneficial effects of the present invention are: can realize the hydraulic sand blasting oriented perforating and fixed length, orientation slot of multiple layers of position,
And oriented perforating and orientation slot working method can free switchings；In addition, hydraulic jet perforation and slot are with not will cause nearly well
The compacting damage of layer, is significantly increased the recovery ratio of reservoir；Hydraulic directional abrasive perforating, slot integrated apparatus and its application method
Every field suitable for the exploitation of conventional gas and oil, shale oil gas, coal bed gas and gas hydrates.
Detailed description of the invention
Fig. 1 is universe structural schematic diagram of the present invention；
Fig. 2 is down-hole high pressure movement and speed control system principle schematic diagram；
Fig. 3 is the structural schematic diagram of the telescopic centralizer of high-pressure rotary；
Fig. 4 is the side view of the telescopic centralizer of high-pressure rotary；
Fig. 5 is the structural schematic diagram for orienting spray gun；
Fig. 6 is the schematic side view for orienting spray gun；
Fig. 7 is the Section A-A figure for orienting spray gun；
Fig. 8 is one-way valve structures schematic diagram；
Fig. 9 is sand screen and guide structure schematic illustration；
In upper figure: centralizer 1, variable buckle connector 2, down-hole high pressure movement and the telescopic centralizer of speed control system 3, high-pressure rotary
4, spray gun 5, tubing nipple 6, check valve 7, sand screen and guider 8 are oriented；
Connection end cap 3-1, left chamber 3-2, band spring check valve 3-3, right chamber 3-4, spring bearer plate 3-5, returning spring pipe nipple 3-
6, returning spring 3-7, central rotating shaft 3-8, adjustable throttle valve 3-9,
Drive end bearing bracket 4-1, ontology 4-2, flank 4-3, reset spring 4-4, wiper block 4-5, bearing 4-6, rear end cap 4-7, shaft 4-
8, hard alloy splashproof sleeve 5-1, orientation gun body 5-2, nozzle cage 5-3, nozzle 5-4, nozzle pressure cap 5-5, check valve master
Body 7-1, ball seat 7-2, ball sealer 7-3, sand screen 8-1, eyelet 8-2 and guider 8-3.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Referring to attached drawing 1, a kind of hydraulic directional abrasive perforating and slot integrated apparatus that the present invention mentions, technical solution
It is: including centralizer 1, variable buckle connector 2, down-hole high pressure movement and the telescopic centralizer 4 of speed control system 3, high-pressure rotary, determines
It is constituted to spray gun 5, tubing nipple 6, check valve 7, sand screen and guider 8；Above-mentioned component is concatenated by tubing thread, centralizer 1
Down-hole high pressure movement and speed control system 3 are connected by variable buckle connector 2, under down-hole high pressure movement and speed control system 3
End connects a group or more of cutting assemblies, and every group of cutting assembly is by the telescopic centralizer 4 of high-pressure rotary, orientation spray gun 5
It is formed with the telescopic centralizer 4 of high-pressure rotary, every group of cutting assembly is connected by tubing nipple 6, and end is connected by check valve 7
It is connected to sand screen and guider 8.
Referring to attached drawing 2, down-hole high pressure is mobile and speed control system 3 by connection end cap 3-1, returning spring pipe nipple 3-6, in
Heart shaft 3-8 constitutes its external structure, meanwhile, building forms the left chamber 3-2 and right chamber that can accommodate hydraulic oil inside it
3-4 is equipped with more piece returning spring 3-7 between returning spring pipe nipple 3-6 connected two-by-two, installs on central rotating shaft 3-8
Have and spring bearer plate 3-5 is installed on band spring check valve 3-3 and adjustable throttle valve 3-9, with returning spring 3-7 contact surface, passes through
Band spring check valve 3-3 makes hydraulic oil by left chamber's 3-2 one-way flow to right chamber 3-3.By the area of passage for adjusting hydraulic oil
Control slot speed；Returning spring is by central rotating shaft, the telescopic centralizer of high-pressure rotary, orientation spray gun, tubing nipple, unidirectional
Valve, sand screen and guider are retracted to initial position, and guarantee that it is quickly recycled with spring check valve；Returning spring can be according to high pressure
Rotary and telescopic centralizer is connected more piece with the frictional force size of casing or wellbore open hole well, to effectively increase installation precommpression
Power guarantees the reliability of recycling, meanwhile, when implementing slot mode, guarantee under lower pump pressure, orientation spray gun does not generate position
It moves, after pressure increase, then generates displacement.
Referring to attached drawing 3-4, the telescopic centralizer 4 of high-pressure rotary is by drive end bearing bracket 4-1, ontology 4-2, rear end cap 4-7 and shaft
4-8 constitutes the installation site of bearing 4-6, and fills lubricating oil in the cavity between bearing 4-6 and shaft 4-8, passes through axis
The driving torque that shaft 4-8 rotation needs can be greatly reduced by holding 4-6；Six flank 4-3 are welded on ontology 4-2 outer wall, righting
Block 4-5 is equipped with reset spring 4-4 in the groove of flank 4-3 between the two；In tripping in and slot operation process, six
A wiper block 4-5 is pressurized, compression reseting spring 4-4, is supported on casing or bore hole inside wall under spring force effect, plays and help
Positive interaction, and shaft 4-8 is free to rotate.
Referring to attached drawing 5-7, above-mentioned orientation spray gun 5 includes orientation gun body 5-2, nozzle cage 5-3, nozzle 5-4, nozzle pressure
Cap 5-5, there are larger with the geometric center that orients gun body 5-2 for the geometric center of the both ends tubing thread of the orientation spray gun 5
Deviation, the whole center of gravity of orientation spray gun 5 are partial to lower part；Multiple nozzle 5-4, nozzle 5-4 are equipped in the orientation gun body 5-2
It is consolidated by bonding way and nozzle cage 5-3, nozzle cage 5-3 is screwed on orientation gun body 5-2 with screw thread, and nozzle 5-4 enters
Nozzle pressure cap 5-5 is combined between mouth section and nozzle cage 5-3.It is acted on, and flushing fluid is by nozzle 5-4
It washes out；Meanwhile erosive wear of the stream to orientation spray gun 5 is returned in order to prevent perforation or slot process high speed, in orientation spray gun
The outer wall of ontology 5-2 is equipped with hard alloy splashproof sleeve 5-1, to prolong the service life.
Referring to attached drawing 8, check valve 7 includes unidirectional valve body 7-1, ball seat 7-2, ball sealer 7-3, unidirectional valve body 7-1's
Inner cavity is equipped with ball seat 7-2, is cooperated by ball sealer 7-3 and ball seat 7-2, to guarantee sealing effect and reducing abrasion, the sealing
Ball 7-3 and the contact position ball seat 7-2 need Nitrizing Treatment, and roughness control is within Ra 0.8.
Referring to attached drawing 9, sand screen is connect and is formed by sand screen 8-1 and guider 8-3 with guider 8, sand screen 8-1 with
It is machined with multiple eyelet 8-2 between guider 8-3, when reacting cycle clean-out service, it is fixed that flushing fluid by eyelet 8-2 enters waterpower
Into abrasive perforating, slot integrated apparatus and return to ground.
Preferably, slot group number is controlled by the number of the orientation spray gun 5 concatenated, and every group of slot quantity is by orientation spray gun 5
The installation number of top nozzle controls, and seam spacing is determined by the length of tubing nipple 6；Seam length is moved by down-hole high pressure and speed control
The impulse stroke of returning spring 3-7 and the length of left chamber 3-2 and right chamber 3-4 determine in system 3.
The application method of a kind of hydraulic directional abrasive perforating and slot integrated apparatus that the present invention mentions, including following mistake
Journey:
(1) slot embodiment is oriented
It is connected according to mode described in attached drawing 1, according to the demand of slot group number, the quantity of selection orientation spray gun 5；According to every group of slot
The demand of quantity, the installation number of selection orientation 5 top nozzle 5-4 of spray gun；According to the demand of seam spacing, tubing nipple 6 is selected
Length；Required according to seam is long, select down-hole high pressure mobile and speed control system 3 on returning spring 3-7 impulse stroke and
The length of left chamber 3-2 and right chamber 3-4；After connection, in centralizer 1(standard component) left end jointed rod or oil
Pipe, six wiper blocks that kit string is entered into after well decentralization to work layer position, on the telescopic centralizer 4 of high-pressure rotary by ground
4-5 is pressurized, compression reseting spring 4-4, is supported on casing or bore hole inside wall under spring force effect, plays centralizing function；
Spray gun 5 is oriented under the action of eccentric torque, guarantees the default slot position that nozzle 5-4 is respectively facing always, realizes that orientation is cut
The function of seam；Start ground face-pumping after throwing ball sealer 7-3, ball sealer 7-3 is set at the ball seat 7-2 of one-way valve seat 7-1；Subsequently
Face-pumping boosts to pump pressure P1, and high-pressure abrasive material slurry gradually passes through drilling rod or oil pipe inner cavity enters the nozzle 5-4 oriented on spray gun 5
In；Meanwhile being pumped P1 and acting at ball seat 7-2, pressure F1 is generated, but the value of F1 is less than down-hole high pressure movement and speed control system
The pre-compression force summation F of more piece returning spring 3-7 in system 2Always, therefore, orientation spray gun 5 is remain stationary, to guarantee high pressure abrasive slurry
Body has time enough to enter in nozzle 5-4；Reach after a certain period of time, by the boost in pressure of ground face-pumping to P2, at this time in ball seat
The pressure F2 > F generated at 7-2Always, down-hole high pressure is mobile and speed control system 3 on central rotating shaft 3-8 stretched with high-pressure rotary
Contracting formula centralizer 4, orientation spray gun 5, tubing nipple 6, check valve 7, sand screen and guider 8 are slowly mobile, and gradually reduce underground
Returning spring 3-7 in high pressure movement and speed control system 3, while nozzle 5-4 modulates high-pressure abrasive material slurry to form high speed
Abradant jet, to progress slot, wherein slot speed is moved by down-hole high pressure and speed control system 3 determines, technical characteristic
Are as follows: band spring check valve 3-3 only allows hydraulic oil to flow to right chamber 3-3 by left chamber 3-2, does not allow reverse flow, hydraulic oil
Left chamber 3-2 can only be flowed to by right chamber 3-3 by adjustable throttle valve 3-9, change the area of passage of adjustable throttle valve 3-9
Can accurate flow control, and then control orientation spray gun 5 movement speed.
After slot, ground face-pumping shuts down release, central rotating shaft 3-8 and the telescopic centralizer 4 of high-pressure rotary, orientation spray gun
5, tubing nipple 6, check valve 7, sand screen and guider 8 are retracted to initial bit under the elastic force effect that returning spring 3-7 is stored
It sets, during this, hydraulic oil flows to right chamber 3-3 by left chamber 3-2, since the area of passage with spring check valve 3-3 is long-range
In adjustable throttle valve 3-9, therefore, the time that above-mentioned component retracts is very short；Of particular note is that: to guarantee above-mentioned component
The reliability of retraction, can according to the telescopic centralizer 4 of high-pressure rotary and frictional force size, connect more piece returning spring 3-7, with
Increase installation pre-compression force, and more piece returning spring 3-7 must be mutually isolated (that is, head and the tail do not connect) can just effectively increase installation
Pre-compression force.
After one layer position operation, the high-pressure abrasive material slurry of underground is subjected to direct circulation replacement using displacement fluid；In addition,
It can also be pumped into flushing fluid between tool string annular space and carry out reacting cycle well-flushing, and ball sealer 7-3 is recycled, above mention kit
String to next layer of position continues to repeat above procedure, until slot is fully completed.
(2) oriented perforating embodiment
Adjustable throttle valve 3-9 on down-hole high pressure movement and speed control system 3 is completely closed, or down-hole high pressure is mobile
And speed control system 3 is removed.
According to the demand of perforation set number, the quantity of selection orientation spray gun 5；According to the demand of every group of perforation quantity, selection is fixed
To the installation number of 5 top nozzle 5-4 of spray gun；According to the demand of standoff distance between every group of perforation, the length of tubing nipple 6 is selected
Degree；After connection, in centralizer 1(standard component) left end jointed rod or oil pipe, kit string is entered into well by ground
After transfer to work layer position, six wiper block 4-5 on the telescopic centralizer 4 of high-pressure rotary are pressurized, compression reseting spring 4-4,
It is supported on casing or bore hole inside wall under spring force effect, plays centralizing function；Spray gun 5 is oriented in the effect of eccentric torque
Under, guarantee the default perforating site that nozzle 5-4 is respectively facing always, realizes the function of oriented perforating；Start after throwing ball sealer 7-3
Ground face-pumping, ball sealer 7-3 are set at the ball seat 7-2 of one-way valve seat 7-1；Subsequent high-pressure abrasive material slurry gradually passes through drilling rod or oil
Tube cavity enters in the nozzle 5-4 on orientation spray gun 5, and nozzle 5-4 modulates high-pressure abrasive material slurry to form high speed abradant jet, right
Carry out perforation；After perforation, the high-pressure abrasive material slurry of underground is carried out direct circulation replacement using displacement fluid by ground face-pumping；In addition,
It can also be pumped into flushing fluid between tool string annular space and carry out reacting cycle well-flushing, and ball sealer 7-3 is recycled, above mention kit
String to next layer of position continues to repeat above procedure, until perforation is fully completed.
The above is only part preferred embodiment of the invention, flexible can be carried out on this basis, for example, root
According to the difference of casing programme, the telescopic centralizer 4 of high-pressure rotary can select 3 ~ 6 or more 4-3 according to size；Orientation
The direction of nozzle 5-4 on spray gun 5 can be any position；The quantity of nozzle 5-4 can arbitrarily increase and decrease；Nozzle 5-4 is sprayed in orientation
Arrangement mode on rifle 5 can be any ways such as circumference, screw arrangement.Anyone skilled in the art
Equivalent technical solution can be modified or is revised as using the embodiment of above-mentioned elaboration.Therefore, according to the present invention
Any simple modification or substitute equivalents that embodiment is carried out, fall within the scope of the claimed invention.
Claims (9)
1. a kind of hydraulic directional abrasive perforating and slot integrated apparatus, it is characterized in that: including centralizer (1), variable buckle connector
(2), down-hole high pressure is mobile and speed control system (3), the telescopic centralizer of high-pressure rotary (4), orientation spray gun (5), oil pipe are short
(6), check valve (7), sand screen and guider (8) is saved to constitute；Above-mentioned component is concatenated by tubing thread, and centralizer (1) passes through change
Buckle joint (2) connects down-hole high pressure movement and speed control system (3), under down-hole high pressure movement and speed control system (3)
End connects a group or more of cutting assemblies, and every group of cutting assembly is by the telescopic centralizer of high-pressure rotary (4), orientation spray gun
(5) it is formed with the telescopic centralizer of high-pressure rotary (4), every group of cutting assembly is connected by tubing nipple (6), and end passes through list
Sand screen and guider (8) are connected to valve (7).
2. hydraulic directional abrasive perforating according to claim 1 and slot integrated apparatus, it is characterized in that: the underground is high
Mobile and speed control system (3) is pressed to constitute it by connection end cap (3-1), returning spring pipe nipple (3-6), central rotating shaft (3-8)
External structure, meanwhile, building forms the left chamber (3-2) that can accommodate hydraulic oil and right chamber (3-4) inside it, in two two-phases
More piece returning spring (3-7) is installed between returning spring pipe nipple (3-6) even, is provided with spring on central rotating shaft (3-8)
Spring bearer plate (3-5) is installed on check valve (3-3) and adjustable throttle valve (3-9), with returning spring (3-7) contact surface, is led to
Crossing band spring check valve (3-3) makes hydraulic oil by left chamber's (3-2) one-way flow to right chamber (3-3).
3. hydraulic directional abrasive perforating according to claim 1 and slot integrated apparatus, it is characterized in that: the high pressure is revolved
Turn telescopic centralizer (4) and bearing (4-6) is constituted by drive end bearing bracket (4-1), ontology (4-2), rear end cap (4-7) and shaft (4-8)
Installation site, and fill lubricating oil in the cavity between bearing (4-6) and shaft (4-8), can be with by bearing (4-6)
The driving torque that shaft (4-8) rotation needs is greatly reduced；Multiple flanks (4-3) are welded on ontology (4-2) outer wall, wiper block
(4-5) is equipped with reset spring (4-4) in the groove of flank (4-3) between the two.
4. hydraulic directional abrasive perforating according to claim 1 and slot integrated apparatus, it is characterized in that: the orientation is sprayed
Rifle (5) includes orientation gun body (5-2), nozzle cage (5-3), nozzle (5-4), nozzle pressure cap (5-5), the orientation spray gun
(5) there are relatively large deviations for the geometric center of the geometric center of both ends tubing thread and orientation gun body (5-2), orient spray gun
(5) whole center of gravity is partial to lower part；It is equipped with multiple nozzles (5-4) in the orientation gun body (5-2), nozzle (5-4) passes through
Bonding way and nozzle cage (5-3) are consolidated, and nozzle cage (5-3) is screwed in orientation gun body (5-2) with screw thread, nozzle (5-
4) it is combined between entrance and nozzle cage (5-3) nozzle pressure cap (5-5).
5. hydraulic directional abrasive perforating according to claim 4 and slot integrated apparatus, it is characterized in that: the orientation is sprayed
The outer wall of gun body (5-2) is equipped with hard alloy splashproof sleeve (5-1).
6. hydraulic directional abrasive perforating according to claim 4 and slot integrated apparatus, it is characterized in that: the nozzle
The arrangement mode of (5-4) on orientation spray gun can be circumference or screw arrangement.
7. hydraulic directional abrasive perforating according to claim 1 and slot integrated apparatus, it is characterized in that: the check valve
It (7) include unidirectional valve body (7-1), ball seat (7-2), ball sealer (7-3), the inner cavity of unidirectional valve body (7-1) is equipped with ball seat (7-
2), cooperated by ball sealer (7-3) and ball seat (7-2), and the ball sealer (7-3) and the contact position ball seat (7-2) need nitriding
Processing, and roughness control is within Ra 0.8.
8. hydraulic directional abrasive perforating according to claim 1 and slot integrated apparatus, it is characterized in that: the sand screen
It is connect and is formed by sand screen (8-1) and guider (8-3) with guider (8), between sand screen (8-1) and guider (8-3)
It is machined with multiple eyelets (8-2), when reacting cycle clean-out service, flushing fluid enters hydraulic directional sandblasting by eyelet (8-2) and penetrates
In hole, slot integrated apparatus and return to ground.
9. hydraulic directional abrasive perforating according to claim 1 and slot integrated apparatus, it is characterized in that: slot group number by
The number of the orientation spray gun (5) of concatenation controls, and every group of slot quantity is controlled by the installation number of orientation spray gun (5) top nozzle,
Seam spacing is determined by the length of tubing nipple (6)；Seam it is long by down-hole high pressure move and speed control system (3) on returning spring
The length of the impulse stroke of (3-7) and left chamber (3-2) and right chamber (3-4) determine.
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| CN201910222697.XA CN110056333B (en) | 2019-03-22 | 2019-03-22 | Hydraulic directional sand blasting perforation and slotting integrated device and using method thereof |
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| CN201910222697.XA CN110056333B (en) | 2019-03-22 | 2019-03-22 | Hydraulic directional sand blasting perforation and slotting integrated device and using method thereof |
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| CN110056333B CN110056333B (en) | 2021-10-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN114482895A (en) * | 2022-01-14 | 2022-05-13 | 中国石油大学(华东) | Ultrahigh-pressure abrasive jet cutting system and method for abandoned shaft of offshore oil production platform |
| CN115126465A (en) * | 2022-08-04 | 2022-09-30 | 天地科技股份有限公司 | Hydraulic cutting fracturing string and permeability increasing device |
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| CN114482895A (en) * | 2022-01-14 | 2022-05-13 | 中国石油大学(华东) | Ultrahigh-pressure abrasive jet cutting system and method for abandoned shaft of offshore oil production platform |
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