CN109113684A - Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool - Google Patents
Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool Download PDFInfo
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- CN109113684A CN109113684A CN201811263639.3A CN201811263639A CN109113684A CN 109113684 A CN109113684 A CN 109113684A CN 201811263639 A CN201811263639 A CN 201811263639A CN 109113684 A CN109113684 A CN 109113684A
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- Prior art keywords
- sand control
- tubing string
- mechanical sand
- mechanical
- packer
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- 239000004576 sand Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012856 packing Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 210000000078 claw Anatomy 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 210000000664 rectum Anatomy 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000644035 Clava Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011026 diafiltration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
-
- 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
- E21B17/02—Couplings; joints
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/18—Grappling tools, e.g. tongs or grabs gripping externally, e.g. overshot
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention is small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool, can change the status that chemical sand control is used only in current small casing producing well, improves sand control effective percentage, facilitates salvaging of the later period workover treatment to down-hole string.Connection has the packer for function of giving up in mechanical sand control tubing string, packer do not set slips supporting mechanism and slips, acted against on the sand face of artificial bottom of a well by the bottom of mechanical sand control tubing string and in packer pitching as packing element suppress it is setting expanding force is provided, mechanical sand control tubing string can be suppressed by liquid and mechanical back-off is given up.Fishing tool includes salvaging top connection and fishing socket, and the internal screw thread for salvaging top connection lower part is connect with mandrel, is connected between the top and mandrel of fishing socket by guide pin.The present invention is not only that the mechanical sand control of small casing pipe well provides the tubing string effectively constructed, but also has prepared fishing tool for the workover treatment in later period, this its simple structure, easy for construction.
Description
Technical field
The present invention relates to the mechanical sand control Method and kit fors of the small casing pipe well of petroleum industry, especially small casing producing well machine
Tool anti-sand method and mechanical sand control tubing string and fishing tool change the status that chemical sand control is used only in current small casing producing well,
It is efficient to improve sand control, facilitates salvaging of the later period workover treatment to down-hole string.
Background technique
For loose sand oil accumulation, initial stage operation is essentially five cun of half-covering tubes and was developed due to the development and production of many years
Shaking out in journey is corroded and the factors such as high-handed measures influence, and casing damage phenomenon is increasingly sharpened.
The tripping in small casing in above-mentioned casing failure well, producing these wells again is a kind of effective hand for administering casing damaged well
Section, using also just more and more.Small casing pipe well is primarily referred to as 4in, 31/2The cased well of in, with prolonging for the oil field development time limit
Long, the sand output well in small casing pipe well is more and more.Since reservoir sand median particle size is small in sand output well, heterogeneity is serious, shale
Content is high and small casing pipe well operation pressure is high simultaneously, and sand feeding amount is few, and borehole size is limited, and brill plug technique is not perfect, uses routine
The tubing string that sand screen sand control is hung in oil well carries out sand control, and the later period salvages difficult.This is because conventional downhole packer is equipped with band
There are the slips and slips supporting mechanism of slip insert, sand control pipe is anchored in casing by slips by slip insert, but is applied
In the casing of small casing pipe well, packer is just easy to stuck in casing, leaves future trouble to workover treatment in the future.
Small casing pipe well sand control mainly uses chemical sand control at present, and it is not perfect etc. formation contaminant, blocking and perforation easily occur
Situation.Meanwhile as exploitation enters the later period, the aqueous, fluid producing intensity of small casing pipe well is stepped up, and chemical sand control is increasingly difficult to
To meet production requirement.Therefore the demand for hanging sand screen sand control using inexpensive small casing in small casing pipe well is more more and more intense,
However small casing hang sand screen sand control using conventional packer be easy to it is stuck in well, later period operation be difficult to salvage again, this
As a key factor for influencing to implement in small casing pipe well, the reason is that domestic never the dedicated of pony packer beats
Fishing combined tool.
The fishing tool of existing small casing pipe well down-hole string is female thread in being shorted using oil pipe and packer to buckle fisher,
The intensity that oil pipe is shorted is lower, is not able to satisfy pulling force demand when deblocking releasing, while screw thread damage easily occur during make-up,
Once screw thread damages, can not will thoroughly salvage, therefore this mode needs to change there are biggish security risk and construction risk
Into.
Small casing chemical sand control at present has been unable to meet production requirement, is badly in need of developing small casing pipe well mechanical sand control embodiment party
Method, to solve the above problems.
Summary of the invention
It is right the object of the present invention is to provide small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool
Small casing pipe well chemical sand control provides the supplement in the improvement and sand control method on sand control technique at present, solves current small casing pipe well machine
Difficulty existing for tool sand control improves the effective percentage of small casing pipe well sand control by mechanical sand control, extends the sand control life, reduces production
Cost.
The technical solution of the invention is as follows:
Small casing producing well mechanical sand control method is: connection has the packer for function of giving up, packing in mechanical sand control tubing string
Device do not set slips supporting mechanism and slips, is acted against on the sand face of artificial bottom of a well by the bottom of mechanical sand control tubing string and toward packing
In device pitching be packing element suppress it is setting expanding force is provided, mechanical sand control tubing string can be suppressed by liquid and mechanical back-off carries out
It gives up.
Mechanical sand control tubing string using small casing producing well mechanical sand control method includes reducer union, back-off sub, packing
Device and back-off connector, reducer union are successively connect with back-off sub, packer and back-off joint screw thread by oil pipe, are buckled to connector
Lower section be successively threadedly coupled with sand screen, safety joint, sand screen and silk plug by oil pipe, silk plug acts against artificial bottom of a well
On sand face；Packer is equipped with and suppresses releasing gadget, piston and packing element, does not set slips supporting mechanism and slips, piston is mounted on
Between connector and pressure ring, the both ends of packing element are equipped with sheath and helmet, and sheath is threadedly coupled with pressure ring, and helmet and center pipe screw thread connect
It connects, the setting ball of investment is fallen in above the ball seat for suppressing releasing gadget.
Fishing tool for mechanical sand control tubing string includes salvaging top connection and fishing socket, salvages the interior spiral shell of top connection lower part
Line is connect with mandrel, is provided with the valve of axial slot segmentation between the top and mandrel of fishing socket by guide pin connection, lower part
Shape cylinder, the outer circle of the petaloid cylinder, which is equipped with, salvages screw thread, and the centre bore of mandrel and the centre bore for salvaging top connection penetrate through.
Compared with prior art, significant using effect of the invention is: present invention reduces the length of sand screen, sand setting tail pipe
Degree, is mounted with safety joint between sand screen and sand screen.Use defect of the conventional packer in small casing pipe well in order to prevent,
Packer in the present invention eliminates slips and slips supporting mechanism, makes its rubber tube seat using tubing string bottom tail pipe and silk plug support
Envelope, carry out small casing pipe well mechanical sand control, effectively prevent packing element using slips it is setting be easy it is stuck in the defects of small casing pipe well.
The safety joint connected in tubing string of the present invention is peg type one-way joint, can prevent safety joint caused by percussion drill from cutting, and is improved
Success rate of going into the well.The present invention is also stuck in casing for the salvaging of later period packer and the sand screen being likely to occur simultaneously
Situation provides fishing tool.Later period proposes packer if you need to workover treatment and extracts sand screen, the present invention can be used to provide
Fishing tool salvaged.
The present invention is not only that the mechanical sand control of small casing pipe well provides the tubing string effectively constructed, but also is the well workover in later period
Operation has prepared fishing tool, and the present invention provides a whole set of technology, simple structure, embodiment party for small casing pipe well mechanical sand control
Just, consider comprehensively, there is good using effect and application prospect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram and working principle diagram of mechanical sand control tubing string of the present invention.
Fig. 2 is the structural schematic diagram of packer in Fig. 1.
Fig. 3 is the structural schematic diagram of sand screen in Fig. 1.
Fig. 4 is the structural schematic diagram of safety joint in Fig. 1.
Fig. 5 is the fishing tool structural schematic diagram to packer in Fig. 1 and safety joint.
The embodiment two of formed punch in Fig. 6 Fig. 5.
Specific embodiment
The present invention is described in detail below in conjunction with attached drawing, is not limited the scope of the invention.As described below is only of the invention
Preferred embodiment, other use equivalence changes of the invention, are within the scope of protection of the invention.
Referring to Fig. 1 and Fig. 2, small casing producing well mechanical sand control method is: connection has and gives up in mechanical sand control tubing string
The packer 2 of function, packer 2 do not set slips supporting mechanism and slips, are acted against manually by the bottom of mechanical sand control tubing string
On the sand face in shaft bottom and in packer 2 pitching be packing element 26 suppress it is setting expanding force is provided, mechanical sand control tubing string can lead to
Cross that liquid is suppressed and mechanical back-off is given up, liquid, which is suppressed, gives up preferably.Since packer 2 does not set slips supporting mechanism and card
Watt, there is no the stuck factors between small casing pipe well well inner sleeve, greatly facilitate the fishing in later period, are small casing pipe well
Sand control provide technical support.
Mechanical sand control tubing string using small casing producing well mechanical sand control method includes reducer union 1, back-off sub 3, envelope
Every device 2 and back-off connector 4, reducer union 1 is successively threadedly coupled with back-off sub 3, packer 2 and back-off connector 4 by oil pipe；
The lower section of back-off connector 4 is successively threadedly coupled with sand screen 5, safety joint 6, sand screen 5 and silk plug 7 by oil pipe, and silk plug 7 pushes up
It leans against on the sand face of artificial bottom of a well；Packer 2 is equipped with and suppresses releasing gadget, piston 22 and packing element 26, does not set slips supporting mechanism
And slips, piston 22 are mounted between top connection 21 and pressure ring 23, the both ends of packing element 26 are equipped with sheath 25 and helmet 214, sheath
25 are threadedly coupled with pressure ring 23, and helmet 214 is threadedly coupled with central tube 27, and the setting ball of investment falls in the ball for suppressing releasing gadget
Above seat 29.Suppress that the top of elastic claw 28 in releasing gadget is threadedly coupled with top connection 21, the lower part of elastic claw 28 is locked in
Below the limited step of central tube 27, equipped with pressure ring 23, deblocking fishing head 211 and lock ring between top connection 21 and central tube 27
24, the tube body of pressure ring 23 is equipped with liquid flow hole, tube body upper end acts against the lower end of piston 22, tube body lower part and 25 screw thread of sheath connect
It connects, lock ring 24 is installed between deblocking fishing head 211 and sheath 25, lock ring 24 is connect with the buttless thread of 27 outer wall of central tube.
The releasing gadget of suppressing includes elastic claw 28 and ball seat 29, and the outer circle of ball seat 29 is non-isometrical outer circle, under outer circle
Portion's suit support ring 212 is simultaneously threadedly coupled with back of the body cap 213, the limited step on 29 outer circle top of ball seat and the limit of 28 inner wall of elastic claw
Position step matches, limited step outer diameter in the middle part of outer circle be less than outer circle top limited step outer diameter and with support ring 212
Upper surface matches；28 lower body of elastic claw is equipped with vertical slot, is a point valve cylinder, and 28 lower part of elastic claw divides valve cylinder to pass through branch
Pushing out ring 212 is held out against in the inner cavity below 27 limited step of central tube.When packing element 26 needs anti-flushing well after setting, liquid is from sleeve ring
Dividing valve cylinder, thus filling lower part tubing string downwards for 28 lower part of elastic claw is entered by the liquid flow hole on pressure ring 23 in empty, then from
The inner hole of ball seat 29 continues to be up to oil pipe outflow ground.Piston 22 is power resources when packer 2 is set, mechanical sand control pipe
Column is pressed under Fig. 1 in place, and setting ball is put into, and connects pump truck pipeline, turn on pump fluid injection, and liquid enters top connection 21 and piston by oil pipe
22 upper ends form pressure, and 22 downlink of piston pushes pressure ring 23 and sheath 25 squeezes packing element 26, and packing element 26 is squeezed after expansion just
It is tightly attached on internal surface of sleeve pipe.
It is also equipped with fastening screw between the packing element 26 and helmet 214, the fastening screw is equipped at least with three；The packer 2
Minimum in latus rectum between 38mm-42mm.In order to allow this machinery sand control pipe to be anchored in casing, pitching is implemented to packing element 26
It is setting, when the setting packing element 26 of pitching, above under the support and reaction force of hydraulic coupling and tubing string bottom silk plug 7, by packing element 26
It is setting in small casing.It then proceedes to suppress, after the shear pin 210 between elastic claw 28 and ball seat 29 is cut, ball seat 29
Downlink is located in above the limited step of 28 upper inside wall of elastic claw, and back of the body cap 213 is located at ball seat 29 with 29 1 pieces of downlinks of ball seat
The limited step of outer circle lower part drives the downlink together of support ring 212, and elastic claw 28 is released in central tube 27, Ke Yishou
Contracting, may lift up the releasing gadget of suppressing that tubing string is connected by back-off sub 3 and below at this time and all proposes out of well.
Referring to Fig. 3, the sand screen 5 is equipped with base tube 52, network management 54 and outer protection tube 55, and the both ends of base tube 52 are connect by oil pipe
Hoop connect with oil pipe, is uniformly distributed liquid flow hole on the tube body of middle part, and network management 54 and outer protection tube 55, network management 54 are housed outside central tube body
It is welded between the both ends and base tube 52 of outer protection tube 55 by upper fixed ring 53 and lower fixed ring 56, sand screen 5 is connect by oil pipe
Hoop 51 and oil pipe are connected to the two sides of safety joint 6, and 5 intensity of sand screen connected in this machinery sand control pipe is high, diafiltration property is good,
Can meet the needs of small casing pipe well sand control extract.
Referring to fig. 4, the safety joint 6 includes safe top connection 61, safe shear pin 62 and safe lower contact 63, peace
Full top connection 61 passes through safe shear pin 62 with safe lower contact 63 and connect, safe top connection 61 and safe lower contact 63 it is interior
Oblique guiding slope is equipped in wall, the lower section inner wall that slope is tiltedly guided in safe lower contact 63, which is equipped with, salvages screw thread, the salvaging screw thread
It is threadedly coupled with the salvaging of fishing tool, the internal screw thread in safe top connection 61 is connect with oil pipe.Upper tiltedly guiding slope can guide
Fishing tool can smoothly enter into the inner cavity of safety joint 6.In order to prevent the sand screen 5 in mechanical sand control tubing string in the well workover in later period
Operation is salvaged in the process there is a situation where being stuck in casing, and safety joint 6 is connected between two sand screens 5, makes fishing tool
It is able to enter in the safety joint 6 between two sand screens 5, two sand screens 5 is salvaged simultaneously.Make in this sand control pipe
Safety joint 6 is unidirectional peg type connector, it is ensured that mechanical sand control tubing string enters well success rate, later period workover treatment and energy
Ensure that tubing string is easy to take out.
Referring to figs. 5 and 6, include salvaging top connection 81 and fishing socket 83 for the fishing tool of mechanical sand control tubing string, beat
The internal screw thread of fishing 81 lower part of top connection is connect with mandrel 84, is connected between the top and mandrel 84 of fishing socket 83 by guide pin 82
Connect, lower part is provided with the petaloid cylinder of axial slot segmentation, the outer circle of the petaloid cylinder, which is equipped with, salvages screw thread, the centre bore of mandrel 84
It is penetrated through with the centre bore for salvaging top connection 81.
For the guide pin 82 from the cotter slot of the external insertion mandrel 4 of fishing socket 83, which is located at mandrel 84
External wall of upper portion in, be axial vertical slot.
The lower body of the mandrel 84 is formed punch 85 or is threadedly coupled with formed punch 85, referring to Fig. 6, which is cone
Shape clava, lower end are equipped with chamfering, weld hard alloy on the chamfering upper berth.
Salvaging screw thread on the 83 lower part petaloid cylinder of fishing socket can in the deblocking fishing head 211 in packer 2
The salvaging for salvaging safe 63 inner wall of lower contact in screw thread and safety joint 6 of wall is threadedly coupled.Change existing small casing pipe well well
Middle packer is shorted the mode to buckle fisher using oil pipe, and working method is safe and reliable, is in small casing pipe well using mechanical anti-
Sand lays the foundation.
The aperture of the salvaging top connection 81 and 84 centre bore of mandrel is set between 13mm-22mm.It can be to underground
The inner cavity of packer 2 and safety joint 6 implements effectively to rinse, and since the aperture of this fishing tool centre bore is small, salvages top connection
81 have enough wall thickness, play variable diameter and centralizing function, and righting effect is solid and reliable, and stability is strong, is not susceptible to
Bit freezing.
The embodiment described above is only exemplary embodiments, but the present invention is not limited only to these embodiments, this field
Technical staff can make modification without departing from the spirit and inspiration of the present invention.There may be many for aspect disclosed herein
Change, combination and modification, and be within, therefore, protection scope is not limited only to explanation above.
Claims (10)
1. small casing producing well mechanical sand control method, is: connection has the packer for function of giving up in mechanical sand control tubing string
(2), packer (2) does not set slips supporting mechanism and slips, acts against the sand of artificial bottom of a well by the bottom of mechanical sand control tubing string
Setting offer expanding force is suppressed on face and toward packer (2) interior pitching for packing element (26), mechanical sand control tubing string can pass through liquid
Body is suppressed and mechanical back-off is given up.
2. using the mechanical sand control tubing string of small casing producing well mechanical sand control method described in claim, including reducer union (1),
Back-off sub (3), packer (2) and back-off connector (4), reducer union (1) by oil pipe successively with back-off sub (3), packing
Device (2) and back-off connector (4) be threadedly coupled, characterized in that back-off connector (4) lower section by oil pipe successively with sand screen (5),
Safety joint (6), sand screen (5) and silk plug (7) are threadedly coupled, and silk plug (7) acts against on the sand face of artificial bottom of a well；Packer
(2) it is equipped with and suppresses releasing gadget, piston (22) and packing element (26), do not set slips supporting mechanism and slips, piston (22) is mounted on
Between top connection (21) and pressure ring (23), the both ends of packing element (26) are equipped with sheath (25) and helmet (214), sheath (25) and pressure ring
(23) it is threadedly coupled, helmet (214) is threadedly coupled with central tube (27), and the setting ball of investment falls in the ball seat for suppressing releasing gadget
(29) above.
3. mechanical sand control tubing string as claimed in claim 2, characterized in that the releasing gadget of suppressing includes elastic claw (28) and ball
Seat (29), the outer circle of ball seat (29) are non-isometrical outer circles, and outer circle lower part is set with support ring (212) and connects with back of the body cap (213) screw thread
It connects, the limited step on ball seat (29) outer circle top matches with the limited step of elastic claw (28) inner wall, the limit in the middle part of outer circle
Outer diameter of step is less than the outer diameter of outer circle top limited step and matches with the upper surface of support ring (212)；Under elastic claw (28)
Portion's ontology is equipped with vertical slot, is a point valve cylinder, and elastic claw (28) lower part divides valve cylinder to hold out against by support ring (212) in central tube
(27) in the inner cavity below limited step.
4. the mechanical sand control tubing string as described in Claims 2 or 3, characterized in that also filled between the packing element (26) and helmet (214)
There is fastening screw, the fastening screw is equipped at least with three；Latus rectum is between 38mm-42mm in the minimum of the packer (2).
5. mechanical sand control tubing string as claimed in claim 2, characterized in that the sand screen (5) is equipped with base tube (52), network management
(54) it connect with oil pipe by tubing coupling with outer protection tube (55), the both ends of base tube (52), be uniformly distributed liquid stream on the tube body of middle part
Hole, central tube body outside are equipped with network management (54) and outer protection tube (55), the both ends and base tube (52) of network management (54) and outer protection tube (55)
Between welded by upper fixed ring (53) and lower fixed ring (56), sand screen (5) is connected to by tubing coupling (51) and oil pipe
The two sides of safety joint (6).
6. mechanical sand control tubing string as claimed in claim 5, characterized in that the safety joint (6) include safe top connection (61),
Safe shear pin (62) and safe lower contact (63), safe top connection (61) and safe lower contact (63) pass through safe shear pin
It follows closely (62) to connect, is equipped with oblique guiding slope, safe lower contact in the inner wall of safe top connection (61) and safe lower contact (63)
(63) the lower section inner wall that slope is tiltedly guided on, which is equipped with, salvages screw thread, which is threadedly coupled with the salvaging of fishing tool, safety
Internal screw thread in top connection (61) is connect with oil pipe.
7. being used for the fishing tool of the mechanical sand control tubing string of claim 2 or 6, characterized in that fishing tool includes on salvaging
Connector (81) and fishing socket (83), salvage top connection (81) lower part internal screw thread connect with mandrel (84), fishing socket (83) it is upper
It is connect between portion and mandrel (84) by guide pin (82), lower part is provided with the petaloid cylinder of axial slot segmentation, the petaloid cylinder
The outer circle of body, which is equipped with, salvages screw thread, and the centre bore of mandrel (84) and the centre bore for salvaging top connection (81) penetrate through.
8. the fishing tool of mechanical sand control tubing string as claimed in claim 7, characterized in that the guide pin (82) is from fishing socket
(83) in the cotter slot of external insertion mandrel (4), which is located in the external wall of upper portion of mandrel (84), is axial vertical slot；
The lower body of the mandrel (84) is formed punch (85) or is threadedly coupled with formed punch (85) that the formed punch (85) is that taper is rodlike
Body, lower end are equipped with chamfering, weld hard alloy on the chamfering upper berth.
9. the fishing tool of mechanical sand control tubing string as claimed in claim 8, characterized in that fishing socket (83) lower part petaloid cylinder
Salvaging screw thread on body being capable of salvaging screw thread with deblocking fishing head (211) inner wall in packer (2) and safety joint (6)
The salvaging of middle safe lower contact (63) inner wall is threadedly coupled.
10. the fishing tool of mechanical sand control tubing string as claimed in claim 7, characterized in that the salvaging top connection (81) and core
The aperture of axis (84) centre bore is set between 13mm-22mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811263639.3A CN109113684A (en) | 2018-10-28 | 2018-10-28 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811263639.3A CN109113684A (en) | 2018-10-28 | 2018-10-28 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109113684A true CN109113684A (en) | 2019-01-01 |
Family
ID=64855746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811263639.3A Pending CN109113684A (en) | 2018-10-28 | 2018-10-28 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
Country Status (1)
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|---|---|
| CN (1) | CN109113684A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854213A (en) * | 2019-03-18 | 2019-06-07 | 中国石油化工股份有限公司 | Set damage repairs the sand control pipe of well |
| CN110725658A (en) * | 2019-10-14 | 2020-01-24 | 中国石油化工股份有限公司 | Radial anchoring inverted-buckling casing taking and replacing device and method |
| CN112554828A (en) * | 2020-12-11 | 2021-03-26 | 张新 | Underground fishing device |
| CN113931592A (en) * | 2021-12-16 | 2022-01-14 | 东营市福利德石油科技开发有限责任公司 | Retrievable horizontal well sand control pipe column salvaging and separating device |
| CN114198042A (en) * | 2021-07-26 | 2022-03-18 | 中海油能源发展股份有限公司 | Ball throwing type cutting and fishing integrated tool and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109854213A (en) * | 2019-03-18 | 2019-06-07 | 中国石油化工股份有限公司 | Set damage repairs the sand control pipe of well |
| CN110725658A (en) * | 2019-10-14 | 2020-01-24 | 中国石油化工股份有限公司 | Radial anchoring inverted-buckling casing taking and replacing device and method |
| CN112554828A (en) * | 2020-12-11 | 2021-03-26 | 张新 | Underground fishing device |
| CN114198042A (en) * | 2021-07-26 | 2022-03-18 | 中海油能源发展股份有限公司 | Ball throwing type cutting and fishing integrated tool and using method thereof |
| CN114198042B (en) * | 2021-07-26 | 2024-01-02 | 中海油能源发展股份有限公司 | Ball throwing type cutting and fishing integrated tool and application method thereof |
| CN113931592A (en) * | 2021-12-16 | 2022-01-14 | 东营市福利德石油科技开发有限责任公司 | Retrievable horizontal well sand control pipe column salvaging and separating device |
| CN113931592B (en) * | 2021-12-16 | 2022-02-22 | 东营市福利德石油科技开发有限责任公司 | Retrievable horizontal well sand control pipe column salvaging and separating device |
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