CN107489402A - It is a kind of to integrate the pit shaft fettling installation and its operating method for rinsing and dragging for sand - Google Patents
It is a kind of to integrate the pit shaft fettling installation and its operating method for rinsing and dragging for sand Download PDFInfo
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- CN107489402A CN107489402A CN201710850805.9A CN201710850805A CN107489402A CN 107489402 A CN107489402 A CN 107489402A CN 201710850805 A CN201710850805 A CN 201710850805A CN 107489402 A CN107489402 A CN 107489402A
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- sliding sleeve
- pit shaft
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- 239000004576 sand Substances 0.000 title claims abstract description 90
- 238000009434 installation Methods 0.000 title claims abstract description 26
- 238000011017 operating method Methods 0.000 title claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 23
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 230000007306 turnover Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 210000000664 rectum Anatomy 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000001459 mortal effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 abstract description 19
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 12
- 239000003129 oil well Substances 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of pit shaft fettling installation and its operating method for integrating flushing and dragging for sand, device includes that sleeve type can valve assembly, pump barrel assembly, rramming formula can valve assemblies under pitching in pitching, sleeve type can in pitching valve assembly include sliding sleeve switch component and can valve component in pitching, rramming formula can include can valve component and rramming base cone under pitching for valve assembly under pitching.It is full-bore hollow structure inside tubing string original state, can be operated by common hydraulic sand washing mode；When finding negative pressure without the row of returning, lower valve ball and upper valve ball are put into successively, make both are corresponding to be seated on corresponding valve seat, well head applies the hydraulic coupling of certain pressure, slide sliding sleeve piston and expose circulation port, pit shaft fettling installation has just been completely converted into mechanical sand-picking tubing string.The present invention, which can reduce to remove, changes pipe flow chart, significantly shortens operation and accounts for the well time, reduces operating cost, while at utmost protects reservoir pollution abatement, and improves sand removal success rate.
Description
Technical field
Collect flushing the present invention relates to the pit shaft sand removal of sand well, washing technology field, more particularly to one kind and drag for sand in one
The pit shaft fettling installation and its operating method of body.
Background technology
At present, petroleum works are technical, and the pit shaft sand removal, technology for washing well for sand well mainly have two major classes：It is a kind of
It is hydraulic sand washing (well-flushing), principal mode is the sand washing of this internal full-bore of the oil pipe string of tripping in the wellbore+sawtooth sand washing head
(well-flushing) tubing string, including oil pipe feed liquor, sleeve pipe return the positive backwashing manner of liquid, and sleeve pipe feed liquor, oil pipe return the backwash mode of liquid；
Another kind is mechanical sand-picking, i.e. tripping in sand bucket tubing string in the wellbore, and sand post is smashed to pieces by up and down pumping, by pump and
The pressure difference that annular space fluid column is formed, sandpipe is deposited by what pit shaft sand setting pumping was deposited in sand bucket under the rolling action of well liquid, most
Tubing string is proposed into pit shaft afterwards, ground is drawn off the pit shaft sand that obtains is dragged for, reaches sand removal purpose.
The main advantage of hydraulic sand washing includes：1. technical maturity, tubing string are simple, the oil pipe string of tripping in full-bore is only needed
Construction.2. displacement range is wide, sand-flushing efficiency high.As long as stratum energy is sufficient, flushing effectively the row of being returned, waterpower can be taken
Sand efficiency high, cleaning pit shaft are thorough.3. viscosity containing well liquid can be diluted, the mobility of sand-flushing liquid is improved, is advantageous to
Flushing fluid takes sand and returns discharge pit shaft.4. for the oil well of high, the easy salt crust of well liquid salinity, the flushing of huge discharge clear water can be effective
Dissolving and the salt particle of reservoir sand consolidation, are advantageous to break up the hard sand face for being mixed with crystal salt, sand washing is obtained effective drilling depth, carry
High sand-flushing success rate.
The main drawback of hydraulic sand washing includes：1. negative pressure oil well is more and more, the scope of application is less and less.Now with each
Oil field development is goed deep into, and oil-well strata pressure fall is big, and causing the universal negative pressure water suction of oil well, (i.e. fracturing fluid pours in down a chimney into storage
Layer), reservoir pollution is in turn resulted in, makes well oil output degradation, so the oil well of waterpower sand-flushing can be applicable at present
It is fewer and fewer.2. because of the water suction of oil well universal negative pressure, cause reservoir to miss and reduce well head and take sand and return row and lead, both cause well head punching
The reservoir sand amount of wash-off is few, and has aggravated reservoir pollution because working fluid sweeps along reservoir sand to miss together into reservoir, further drop
Low crude output.
Corresponding, the main advantage of mechanical sand-picking is：By machine power negative pressure is formed in pump barrel merely and carry out pumping and contained
The well liquid of reservoir sand, any external working fluid is not employed, to reservoir without any pollution effect.It is suitable for almost any negative pressure oil well
Pit shaft sand removal operation, be one of preferable solution that hydraulic sand washing can not solve negative pressure oil well sand washover problem.
And the main drawback of mechanical sand-picking includes：1. pumping drags for sand discharge capacity and deposits sand limited volume, sand removal is less efficient.
Drag for for single time sand can only by drag for sandpipe column bottom it is limited deposit sandpipe pumping be dragged for the reservoir sand obtained propose pit shaft, when reservoir sand is more
Need to repeat to remove to drag for sandpipe post and carry out dragging for sand.2. well liquid is more sticky, it is poor to take sand drain liquid mobility, and it is big to enter pump resistance, no
More reservoir sands are deposited in sandpipe beneficial to depositing.3. for the oil well of high, the easy salt crust of well liquid salinity, reservoir sand and crystal salt
Grain consolidation easily forms hard sand face (sand lid) on sand post surface, the pure machine that mechanical sand-picking is up and down reciprocatingly acted on hard sand face
Tool impulsive force is difficult to smash sand face to pieces sometimes, makes to drag for sand and is difficult to obtain effective drilling depth, and final reduce drags for sand success rate.
The content of the invention
The technical problems to be solved by the invention are that providing one kind for above-mentioned the shortcomings of the prior art can realize
It is to drag for the pit shaft fettling installation and its operating method that integrate flushing and drag for sand of sand operation that lift pipe string, which does not change sand washing,.
The technical solution adopted in the present invention is：A kind of to integrate the pit shaft fettling installation for rinsing and dragging for sand, its feature exists
In：Including the sleeve type that sets gradually from top to bottom can in pitching valve assembly, pump barrel assembly, rramming formula can under pitching valve it is total
Into, the sleeve type can in pitching valve assembly include sliding sleeve switch component and can valve component in pitching, the rramming formula can
Under pitching valve assembly include can valve component and rramming base cone under pitching, the sliding sleeve switch component include sliding sleeve housing and
The sliding sleeve piston set in sliding sleeve housing, the sliding sleeve piston is fixed on sliding sleeve housing by shear pin, in sliding sleeve housing
Annular housing is provided between inwall and sliding sleeve piston outer wall, is connected on sliding sleeve housing provided with circulation port with annular housing, institute
Stating can valve component and can valve component be all-pass gauge structure in an initial condition under pitching in pitching.
By above-mentioned technical proposal, the sliding sleeve piston is that longitudinal section is T-shaped piston, the top and bottom of the sliding sleeve piston
Configured with sliding sleeve housing seal.
By above-mentioned technical proposal, the circulation port set on sliding sleeve housing axially offsets setting.
By above-mentioned technical proposal, it is described can in pitching valve component with can under pitching valve component structure it is identical, it is described
Can in pitching the pitching latus rectum of valve component Configuration be more than can under pitching valve component Configuration pitching latus rectum, both of which includes all
That housing, is sequentially provided with turnover panel block valve bonnet assembly and valve seat from top to bottom in valve housing, total in turnover panel block valve bonnet
Into being provided with valve pocket between valve seat.
By above-mentioned technical proposal, the turnover panel block valve bonnet assembly includes block seat ring, is provided with least on block seat ring
Two grooves set down, block is provided with each groove, the block is hinged in groove by torsion spring, its upper end
It is spacing by block seat ring, it is rotated down.
By above-mentioned technical proposal, the pump barrel assembly includes pump barrel, the plunger pull bar that is set in pump barrel and is drawn with plunger
The connected plunger in bar lower end, is provided with gap, between the upper end of the pump barrel and plunger pull bar between the plunger pull bar and pump barrel
Connected by pump barrel box cupling, be connected on pump barrel provided with multiple balance pipes with gap.
By above-mentioned technical proposal, the anti-sand launder of plunger is provided with plunger outer wall.
By above-mentioned technical proposal, the rramming base cone includes rramming base cone body, and the rramming base cone body is cylindrical shape
Hollow structure, its upper and lower end are hatch frame, multiple effluent holes are provided with rramming base cone body, in rramming base cone body
Bottom be provided with rramming pointed cone, the rramming pointed cone is made up of two pieces of welding blocks set in " cross " intersecting vertical, two
Rramming base cone body bottom portion through hole is separated into 4 fan-shaped pylones by welding block.
A kind of operating method as described above for integrating flushing and dragging for the pit shaft fettling installation of sand, it is characterised in that：Bag
Include following steps：
The first step, when pit shaft fettling installation is gone into the well, there is no any valve ball in device, sliding sleeve switch component is also at pass
Closed state, i.e., whole tubing string side do not have direct intercommunicating pore with pit shaft, are full-bore hollow structure inside tubing string, and by smashing
The hatch frame of sand base cone bottom realizes the connection of the pit shaft fettling installation and pit shaft, by common hydraulic sand washing side when starting to operate
Formula is carried out；
Second step, when find negative pressure without the row of returning when, stop sand washing operation, put into less lower valve ball first by well head,
Enable lower valve ball smoothly by slip into and be seated in well mouth oil pipe can be under pitching on the valve seat of valve component, while can be thrown
Under ball the block of valve component it is spacing and can not jump back out to upwards again can under pitching valve component block top；
3rd step, larger upper valve ball is put into by well head again, enable valve ball smoothly by being slipped into well mouth oil pipe
And be seated at can in pitching on the valve seat of valve component, while by can in pitching valve component block it is spacing and can not be upward again
Jump back out to can in pitching valve component block top；
4th step, well head make the downward net effort of sliding sleeve piston by the hydraulic coupling of the application certain pressure in oil pipe
Cut shear pin sliding downwards and expose circulation port, realizing can valve component top tubing string passes through side in pitching circulation
Hole connects with pit shaft, and so far, pit shaft fettling installation has just been completely converted into mechanical sand-picking tubing string；
5th step, drag for according to tradition machinery the operation of sand method and carry out dragging for sand operation.
Having the beneficial effect that acquired by the present invention：
1st, the present invention integrates both full-bore sand-flushing pipe column and mechanical sand-picking tubing string function, it is not necessary to removes replacing pipe
Post, and only need underground full-bore sand-flushing pipe column can be converted into mechanical sand-picking tubing string by certain well head operation, and then
Realize that lift pipe string does not change sand washing to drag for sand operation, the shortcomings that both hydraulic sand washing and mechanical sand-picking can not only be overcome respective, and
And can reduce to remove and change pipe flow chart, significantly shorten operation and account for the well time, reduce operating cost, while at utmost protect
Reservoir pollution abatement, and improve sand removal success rate.
2nd, in the present invention, early stage carries out sand washing operation on a small quantity, is advantageous to dilute well liquid viscosity, raising well liquid takes sand and enters pump stream
Dynamic property, the salt particle with reservoir sand consolidation more can be effectively dissolved, is advantageous to break up the hard sand face for being mixed with crystal salt, made follow-up
Change and drag for the effective drilling depth of sand acquisition, it is final to improve mechanical sand-picking success rate.
Brief description of the drawings
Fig. 1 is the structure chart of the present invention.
Fig. 2 be in the present invention can in pitching valve assembly structure chart.
Fig. 3 be in the present invention can in pitching valve assembly three-dimensional structure diagram.
Fig. 4 is the dimensional structure diagram of turnover panel block valve bonnet assembly in the present invention.
Fig. 5 is the structure chart of pump barrel assembly in the present invention.
Fig. 6 be in the present invention rramming formula can under pitching valve assembly structure chart.
Fig. 7 is the upward view of rramming pointed cone in the present invention.
Fig. 8 is that sleeve type can valve assembly-sliding sleeve be opened in pitching, valve ball is in bottom dead centre structure chart.
Fig. 9 is that sleeve type can valve assembly-sliding sleeve be opened in pitching, valve ball is in top dead-centre structure chart.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, present embodiments provide it is a kind of integrate to rinse drag for the pit shaft fettling installation of sand, including from upper and
Under the sleeve type that sets gradually can valve assembly 1, pump barrel assembly 2, rramming formula can valve assembly 3, the cunnings under pitching in pitching
Shell type can in pitching valve assembly 1 include sliding sleeve switch component and can valve component in pitching, the rramming formula can pitching descend to the mortal world
Your assembly include can valve component and rramming base cone under pitching, it is described valve component and valve component can to exist under pitching in pitching
It is all-pass gauge structure under original state.
As shown in Figure 2,3, the sliding sleeve switch component includes sliding sleeve housing 1-2 and the sliding sleeve set in sliding sleeve housing is lived
1-5 is filled in, sliding sleeve housing 1-2 upper end is connected by upper box cupling 1-1 with oil pipe 4-1 on pump.The sliding sleeve piston 1-5 is longitudinal section
For T-shaped piston, the top and bottom of the sliding sleeve piston 1-5 pass through upper sealing ring 1-3 and lower seal 1-6 and sliding sleeve shell respectively
Body 1-2 seal arrangements.The sliding sleeve piston 1-5 is fixed on sliding sleeve housing 1-2 by shear pin 1-4, in sliding sleeve housing 1-2
Annular housing is provided between inwall and sliding sleeve piston 1-5 outer walls, circulation port (1-2-1,1-2-2) is provided with sliding sleeve housing 1-2
It is connected with annular housing, in the present embodiment, 4 circulation ports is provided with circumferencial direction, 4 circulation ports axially offset setting, with
Ensure sliding sleeve housing 1-2 processing intensity.
As shown in Figure 2,3, it is described can in pitching valve component with can under pitching valve component structure it is identical, it is described to throw
On ball the pitching latus rectum of valve component Configuration be more than can under pitching valve component Configuration pitching latus rectum, can valve component in pitching
Including upper valve housing 1-7, flap block valve bonnet assembly and upper valve are sequentially provided with from top to bottom in upper valve housing 1-7
Seat 1-13, is provided with valve pocket between flap block valve bonnet assembly and upper valve seat.
As shown in figure 4, the flap block valve bonnet assembly includes block seat ring 1-11, it is provided with block seat ring 1-11
At least two grooves set down, be provided with each groove upper stopper 1-10, the upper stopper 1-10 by torsion spring 1-8 and
Upper stopper pin 1-9 is hinged in groove, and its upper end is spacing by groove ends, it is rotated down, wherein, upper gear
Block pin 1-9 is weldingly fixed on block seat ring 1-11.
As shown in figure 5, plunger pull bar 2-1 and and post that the pump barrel assembly 2 includes pump barrel 2-3, set in pump barrel 2-3
The connected plunger 2-4 in pull bar 2-1 lower ends is filled in, the anti-sand launder 2-4-1 of plunger is provided with plunger outer wall.In pump barrel 2-3 inwalls and post
Gap is provided between plug pull bar 2-1,2 balance pipe 2-3-1 are provided with pump barrel 2-3, pump barrel 2-3 upper end is connected with pump barrel and connect
Bind round 2-1 to configure with plunger tie-rod sealing, lower end is connected by oil pipe 4-2 under pump with lower contact 3-1.
As shown in fig. 6, can include lower valve housing 3-2 by valve component under pitching, lower valve housing 3-2 upper end connects with
Head 3-1 is connected.Lower turnover panel block valve bonnet assembly and lower valve seat 3-8 are sequentially provided with from top to bottom in lower valve housing 3-2,
Valve pocket is provided between lower turnover panel block valve bonnet assembly and lower valve seat.Lower turnover panel block valve bonnet assembly equally includes lower stopper seat
The circle 3-6 and lower block 3-5 configured with it, the structure that both configure is identical with the structure of flap block valve bonnet assembly, herein
Do not repeat one by one.
As shown in Figure 6,7, the rramming base cone is cylinder including rramming base cone body 3-9, the rramming base cone body 3-9
Shape hollow structure, its upper and lower end are hatch frame, and 4 circumference uniform distributions and axially staggered are provided with rramming base cone body 3-9
The effluent hole (3-9-1,3-9-2) of setting, rramming pointed cone 3-10, the rramming point are provided with rramming base cone body 3-9 bottom
Cone 3-10 is made up of two pieces of welding blocks set in " cross " intersecting vertical, and two welding blocks are by rramming base cone body 3-9 bottoms
Portion's through hole is separated into 4 fan-shaped pylones.
The present invention operating method be：
The first step, there is no any valve ball when the present apparatus is gone into the well, in tubing string, sliding sleeve switch component is also at closed mode,
I.e. whole tubing string side does not have direct intercommunicating pore with pit shaft, is approximate full-bore hollow structure, only rramming inside tubing string
Base cone bottom is hatch frame, realizes the connection of the pit shaft fettling installation and pit shaft.So, starting operation can be by common waterpower
Sand washing mode is carried out, and early stage carries out prioritizing selection positive backwashing manner during hydraulic sand washing, to ensure the reliable of tubing string inner components
Property and service life, but can also take backwash mode.
Second step, when finding negative pressure without the row of returning, stop sand washing operation, put into less lower valve ball 3- first by well head
7, due to lower valve ball 3-7 diameter designs be less than following spare and accessory parts internal diameter, including sliding sleeve piston 1-5, upper valve seat 1-13,
Plunger pull bar 2-1, plunger 2-4, and the internal diameter more than lower valve seat 3-8.Meanwhile by upper stopper seat ring 1-11, upper stopper 1-10,
The turnover panel block valve bonnet assembly of upper stopper pin 1-9 and upper torsion spring 1-8 compositions, it is designed as when upper stopper 1-10 is by lower valve
When the impulsive force of ball 3-7 whereabouts and deadweight, upper stopper 1-10 is downwardly turned over naturally, allows open walk to enable lower valve ball 3-7 suitable
Profit is slipped into by the way that then upper stopper 1-10 is flipped up setting back again under upper torsion spring 1-8 elastic force effect, because of torsion spring bullet
Power design is smaller, and upper stopper 1-10 has constant weight in addition, and upper stopper 1-10 nature slopes slightly downward necessarily for level
Angle.Because upper stopper 1-10 nature is set by upper stopper seat ring 1-11 position limiting structure, upper stopper 1-10 is upward only
It can overturn to horizontality.And can valve assembly is with can be in pitching compared with valve assembly under pitching, working principle of design and structure
Form all same, simply the former specification is smaller compared to the latter.So lower valve ball 3-7 can be smoothly by well mouth oil pipe
Slip into and be seated on lower valve seat 3-8, at the same it is spacing by lower block 3-5 and lower block 3-5 tops can not be jumped back out to upwards again.
3rd step, after taking a seat the time by the lower valve ball 3-8 whereabouts estimated, then larger upper valve ball is put into by well head
1-12, because upper valve ball 1-12 diameter designs are the internal diameter less than sliding sleeve piston 1-5, and it is more than upper valve seat 1-13 internal diameters.
Equally, top valve ball 1-12 falling impacts power and deadweight can smoothly cross upper stopper 1-10 and be seated at valve seat 1-13
On.Equally, upper valve ball 1-12 is spacing and can not jump back out to upper stopper 1-10 tops upwards again by upper stopper 1-10.When above descending to the mortal world
Your ball 1-12, which all takes a seat, changes and is provided with the function of ball-and-seat.Then well head in oil pipe by applying relatively low hydraulic pressure
Power, occur building the pressure situation when can judge the combination sealing situation of valve ball and valve seat.
4th step, well head in oil pipe by applying higher hydraulic coupling, due to being acted in oil pipe on sliding sleeve piston 1-5
The hydraulic coupling of plane can be acted under sliding sleeve piston 1-5 far above mineshaft annulus fluid column by circulation port (1-2-1,1-2-2)
The hydraulic coupling of plane, the final net effort for make it that sliding sleeve piston 1-5 is downward can exceed 2 pieces of shear pin 1-4 of circumference uniform distribution
Total shear strength, 4 circulation ports (1-2-1,1-2-2) are exposed so as to cut shear pin 1-4 slidings downwards, realization can pitching
Upper valve component top tubing string is connected by the circulation port (1-2-1,1-2-2) of side with pit shaft, as shown in Figure 8,9.So far, originally
The flushing of invention drags for sand integral type pit shaft fettling installation and has just been completely converted into mechanical sand-picking tubing string.
5th step, drag for the operation of sand method according to tradition machinery and carry out dragging for sand operation.
Refer to collect " sand washing, well-flushing, sand bailing process in addition, it should be noted that integrating " sand is dragged in flushing " in the present invention
In one ".
The present invention collects both full-bore sand-flushing pipe column and mechanical sand-picking tubing string work(on the basis of traditional sand bailing process
Can be in one, the shortcomings that both hydraulic sand washing and mechanical sand-picking can not only be overcome respective, and can reduce to remove and change pipe work
Industry process, significantly shorten operation and account for the well time, reduce operating cost, and improve sand removal success rate.
Claims (9)
1. a kind of integrate the pit shaft fettling installation for rinsing and dragging for sand, it is characterised in that：Including the cunning set gradually from top to bottom
Shell type can in pitching valve assembly, pump barrel assembly, rramming formula can valve assembly under pitching, the sleeve type can in pitching valve it is total
Into including sliding sleeve switch component and can valve component in pitching, the rramming formula can under pitching valve assembly include can pitching descend to the mortal world
That component and rramming base cone, the sliding sleeve switch component include sliding sleeve housing and the sliding sleeve piston set in sliding sleeve housing, institute
State sliding sleeve piston to be fixed on sliding sleeve housing by shear pin, ring is provided between sliding sleeve inner walls and sliding sleeve piston outer wall
Shape cavity, be connected on sliding sleeve housing provided with circulation port with annular housing, it is described can valve component and can be under pitching in pitching
Valve component is all-pass gauge structure in an initial condition.
2. pit shaft fettling installation according to claim 1, it is characterised in that：The sliding sleeve piston is that longitudinal section is T-shaped work
Plug, the top and bottom of the sliding sleeve piston configure with sliding sleeve housing seal.
3. pit shaft fettling installation according to claim 2, it is characterised in that：The circulation port axial direction set on sliding sleeve housing
Stagger setting.
4. pit shaft fettling installation according to claim 1 or 2, it is characterised in that：It is described can valve component and can in pitching
The structure of valve component is identical under pitching, it is described can be more than can valve group under pitching for the pitching latus rectum of valve component Configuration in pitching
The pitching latus rectum of part configuration, both of which include valve housing, are sequentially provided with turnover panel block valve bonnet from top to bottom in valve housing
Assembly and valve seat, valve pocket is provided between turnover panel block valve bonnet assembly and valve seat.
5. pit shaft fettling installation according to claim 3, it is characterised in that：The turnover panel block valve bonnet assembly includes block
Seat ring, at least two grooves set down are provided with block seat ring, block are provided with each groove, the block passes through
Torsion spring is hinged in groove, and its upper end is spacing by block seat ring, it is rotated down.
6. pit shaft fettling installation according to claim 1 or 2, it is characterised in that：The pump barrel assembly includes pump barrel, in pump
The plunger pull bar set in cylinder and the plunger being connected with plunger pull bar lower end, gap is provided between the plunger pull bar and pump barrel,
Connected by pump barrel box cupling between the upper end of the pump barrel and plunger pull bar, be connected on pump barrel provided with multiple balance pipes with gap
It is logical.
7. pit shaft fettling installation according to claim 6, it is characterised in that：The anti-sand launder of plunger is provided with plunger outer wall.
8. pit shaft fettling installation according to claim 1 or 2, it is characterised in that：The rramming base cone includes rramming base cone
Body, the rramming base cone body are cylindrical hollow structure, and its upper and lower end is hatch frame, on rramming base cone body
Provided with multiple effluent holes, rramming pointed cone is provided with the bottom of rramming base cone body, it by two pieces is in " cross that the rramming pointed cone, which is,
Rramming base cone body bottom portion through hole is separated into 4 fan-shaped pylones by the welding block composition that shape " intersecting vertical is set, two welding blocks.
9. it is a kind of as described in any claim in claim 1 to 7 integrating rinse drag for the pit shaft fettling installation of sand
Operating method, it is characterised in that：Comprise the following steps：
The first step, when pit shaft fettling installation is gone into the well, there is no any valve ball in device, sliding sleeve switch component is also at closing shape
State, i.e., whole tubing string side do not have direct intercommunicating pore with pit shaft, are full-bore hollow structure inside tubing string, and pass through rramming bottom
The hatch frame of cone bottom realizes the connection of the pit shaft fettling installation and pit shaft, starts by common hydraulic sand washing mode to enter during operation
OK；
Second step, when find negative pressure without the row of returning when, stop sand washing operation, less lower valve ball is put into first by well head, under making
Valve ball can be smoothly by slip into and be seated in well mouth oil pipe can be under pitching on the valve seat of valve component, while by can be under pitching
The block of valve component it is spacing and can not jump back out to upwards again can under pitching valve component block top；
3rd step, larger upper valve ball is put into by well head again, enable valve ball smoothly by slipping into and sitting in well mouth oil pipe
In can in pitching on the valve seat of valve component, while by can in pitching valve component block it is spacing and can not jump out upwards again
To can in pitching valve component block top；
4th step, well head cut the downward net effort of sliding sleeve piston by the hydraulic coupling of the application certain pressure in oil pipe
Shear pin sliding downwards and expose circulation port, realize can in pitching valve component top tubing string by the circulation port of side with
Pit shaft connects, and so far, pit shaft fettling installation has just been completely converted into mechanical sand-picking tubing string；
5th step, drag for according to tradition machinery the operation of sand method and carry out dragging for sand operation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710850805.9A CN107489402A (en) | 2017-09-20 | 2017-09-20 | It is a kind of to integrate the pit shaft fettling installation and its operating method for rinsing and dragging for sand |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710850805.9A CN107489402A (en) | 2017-09-20 | 2017-09-20 | It is a kind of to integrate the pit shaft fettling installation and its operating method for rinsing and dragging for sand |
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| CN107489402A true CN107489402A (en) | 2017-12-19 |
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| CN201710850805.9A Pending CN107489402A (en) | 2017-09-20 | 2017-09-20 | It is a kind of to integrate the pit shaft fettling installation and its operating method for rinsing and dragging for sand |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20191230 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Applicant after: CHINA PETROLEUM & CHEMICAL Corp. Applicant after: Jianghan Oil Production Plant of SINOPEC Jianghan Oilfield Co. Address before: 433123 No. 1 Xiangyang development road, Hubei, Qianjiang Applicant before: Jianghan Oil Production Plant of SINOPEC Jianghan Oilfield Co. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171219 |