CN106401519A - Device and method for taking out broken cable in well under pressure - Google Patents
Device and method for taking out broken cable in well under pressure Download PDFInfo
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- CN106401519A CN106401519A CN201610919216.7A CN201610919216A CN106401519A CN 106401519 A CN106401519 A CN 106401519A CN 201610919216 A CN201610919216 A CN 201610919216A CN 106401519 A CN106401519 A CN 106401519A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 239000010720 hydraulic oil Substances 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005303 weighing Methods 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/125—Grappling tools, e.g. tongs or grabs specially adapted for parted wire line or ropes
-
- 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
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention belongs to the related field of well site cable operation, and discloses a device and method for taking out a broken cable in a well under pressure. The device is installed on an original well opening which comprises a well opening four-way connector, a first valve, a second valve and a third valve; the device comprises a pressure-bearing put-in and take-out assembly installed on one side of the first valve, a pressure-bearing side traction assembly installed on one side of the third valve and a transverse fishing assembly; the pressure-bearing side traction assembly and the pressure-bearing put-in and take-out assembly are oppositely arranged; and a traction cable is connected to one end of the transverse fishing assembly, the other end of the transverse fishing assembly is arranged in the second valve and the third valve and can be fixedly compressed through the third valve, and the traction cable is arranged in the pressure-bearing side traction assembly. By means of the above device, the pressure-bearing put-in and take-out assembly, the pressure-bearing side traction assembly and the transverse fishing assembly are arranged, the rudimental broken cable can be successfully taken out in the under-pressure state of the well opening; and the method is simple and convenient to operate, high in efficiency, safe and reliable. By means of the above method, the rudimental broken cable can be successfully taken out in the under-pressure state of the well opening, and the success rate is high.
Description
Technical field
The present invention relates to well site wireline operation association area, more particularly, to a kind of device taking out fracture cable in well with pressure
And method.
Background technology
During oil development, in order to carry out logging well, the operation such as perforation, need to be using cable by under instrumentation and equipment
Enter in well.During instrumentation and equipment are entered well by cable movement, the steel wire of cable and well liquid rubs mutually are so that electricity
Cable expands, ties a knot, sleave phenomenon, if continuing to operate into well, cable then can rupture in motor process, cause down
The lower partial cables that well instrument and equipment pulls fracture fall in well, and upper portion fractures cable is then left in wellhead equipment,
Because downhole probe is worth high it is necessary to be managed salvaging process, before salvaging well instrument, needs will be stuck in well head and set
The fracture cable not yet falling in standby in well takes out it is impossible to make it also fall in well, with the follow-up work salvaging well instrument of exempt from customs examination
Interfere, even result in and cannot take out well instrument.
Existing before salvaging well instrument, because well pressure is still present in whole wellhead equipment it is impossible to taking-up with pressure
Residual cable, can only further take out cable after discharging well pressure by force before salvaging, but so easily cause blowout, accidents caused.
Therefore, how when wellhead equipment is still in well pressure condition, with pressure cable can be taken out, be current urgent problem.
Content of the invention
It is an object of the invention to provide a kind of device and method taking out fracture cable in well with pressure, existing strong to solve
Row takes out the problems referred to above that fracture cable exists after carrying out pressure release.
For reaching this purpose, the present invention employs the following technical solutions：
A kind of device taking out fracture cable in well with pressure, is arranged on original well head, described original well head includes well head
Four-way, positioned at the first valve of well head four-way side, and be located at well head four-way opposite side and the second valve of setting gradually and
3rd valve, the described device taking out fracture cable in well with pressure includes：
Pressure-bearing is sent into and is taken out assembly, is arranged on the side that the first valve is not connected with well head four-way；
Pressure-bearing side-lining assembly, is arranged on the side that the 3rd valve is not connected with the second valve, and sends into taking-up group with pressure-bearing
Part sets relatively；
Laterally salvage assembly, one end is connected with trailing cable, and the other end is placed in the second valve and the 3rd valve, and can
It is fixed by the 3rd valve, described trailing cable is placed in described pressure-bearing side-lining assembly.
Preferably, described pressure-bearing sends into taking-up assembly including:
Plunger cavity, one end is provided with liquid controling pipe line interface, and the other end is connected to the first valve by flange, and connects the first valve
The end of door is provided with the watch window in airtight hollow structure；
Plunger rod, is movably disposed within described plunger intracavity, and one end sealing stretch out described plunger cavity；
Propulsion head, is connected to one end that plunger rod stretches out plunger cavity, and just described well head four-way is arranged, described propulsion head
The one end being not connected with plunger rod offers at least one draw-in groove, sets described fracture cable for card；
Pipeline, two ends are respectively communicated with the plunger cavity between watch window and flange and watch window and liquid controling pipe line
On plunger cavity between interface；
First needle-valve, connection is in pipeline on the side of flange；
Second needle-valve, connection is in pipeline on the side of liquid controling pipe line interface；
First pressure table is relative with the first needle-valve and set and be communicated in plunger cavity；
Second pressure table, is communicated in pipeline on the side of liquid controling pipe line interface by the 3rd needle-valve.
Preferably, described pressure-bearing side-lining assembly includes：
Cable blowout control device, is connected to the 3rd valve；
Lubricator, is connected to one end that cable blowout control device is not connected with the 3rd valve；
Pressure discharges needle valve assembly, and connection is on described lubricator；
Greasing controls head, is connected to one end of lubricator disconnected cable preventer, and is not connected with one end of lubricator and sets
There is blowout prevention box；
Described trailing cable sequentially passes through greasing and controls head, lubricator and cable blowout control device, is connected to described horizontal beat
Drag for assembly.
Preferably, the length of described lubricator be the fracture cable length of below well head four-way half and preset value it
With.
Preferably, described horizontal salvaging assembly includes：
Fishing socket, is horizontally placed in described second valve and the 3rd valve, and its one end connects described trailing cable, another
End offers hole slot, on the side wall of described hole slot symmetrical and run through be provided with pin-and-hole；
Steady pin, one end is rotatably connected at one of pin-and-hole, and the other end rides upon on another pin-and-hole
Back-moving spring, is connected to described steady pin, for resetting to steady pin.
The present invention also provides a kind of method taking out fracture cable in well with pressure, comprises the steps：
The preset multiple of the well head pressure to original well head for the pressure in regulation pressure-bearing side-lining assembly；
Adjust pressure-bearing and send into the pressure taking out in assembly to equal with well head pressure；
Drive pressure-bearing to send into taking-up assembly to salvage on assembly the fracture cable connection in well head four-way horizontal；
Trailing cable is driven to draw described horizontal salvaging assembly, the cable that will rupture takes out.
Preferably, the described pressure adjusting in pressure-bearing side-lining assembly includes to the preset multiple of well head pressure：
Close the second valve, open cable blowout control device；
Close the blowout prevention box that greasing controls head, and fill stop-leak compound into greasing control head；
The liquid that needle valve assembly injects preset pressure value to lubricator is discharged by pressure, and judges whether to leak；
When there is not leakage, the pressure in release lubricator is to well head pressure, and makes stop-leak compound inject pressure for well head
The preset multiple of pressure, opens the second valve.
Preferably, the described pressure adjusting in pressure-bearing feeding taking-up assembly includes to equal to well head pressure：
Close the first valve, open pressure-bearing and send into the first needle-valve taking out assembly and the 3rd needle-valve；
Hydraulic oil is injected to plunger intracavity by liquid controling pipe line interface, and is judged by first pressure table and second pressure table
Whether plunger cavity pressure is equal to well head pressure；
When plunger cavity pressure is equal to well head pressure, open the first valve.
Preferably, described driving pressure-bearing is sent into takes out assembly by the fracture cable connection in well head four-way in horizontal salvaging
Include on assembly：
Inject hydraulic oil to plunger intracavity, drive pressure-bearing to send into the plunger rod taking out assembly and propulsion head to fracture cable
Mobile；
Continue to inject hydraulic oil to plunger intracavity, drive propulsion headband dynamic circuit breaker to split cable and move to horizontal assembly of salvaging, directly
Cross the horizontal steady pin salvaging assembly to fracture cable；
Close pressure-bearing and send into the first needle-valve taking out assembly, and open the second needle-valve, so that plunger rod and propulsion head is replied
To in situ；
By back-moving spring, steady pin is resetted, and be fixedly connected fracture cable.
Preferably, described driving trailing cable draws described horizontal salvaging assembly, the cable that will rupture takes out and includes：
Trailing cable traction is driven laterally to salvage assembly to the lubricator of pressure-bearing side-lining assembly near greasing control head
End, and judge whether to remain fracture cable in well head four-way；
When not remaining fracture cable in well head four-way, close the second valve；
In well head four-way during residual fracture cable, take out residual fracture cable by following steps：
Close cable blowout control device, and to cable blowout control device upper, between half envelope type flashboard injection to be equivalent to well head pressure pre-
If the stop-leak compound of multiple；
Open lubricator, by the horizontal fracture cable to cable blowout control device for the assembly of salvaging near the one of cable blowout control device
End is cut off, and will laterally salvage assembly and connected fracture cable and take out, and by trailing cable with cut off after well head four
Fracture cable connection in logical；
Reinstall lubricator, recover the pressure state during traction of pressure-bearing side-lining assembly each part；
Continue the fracture cable in traction well head four-way, until fracture cable fully enters the left side cavity of the second valve,
Close the second valve.
The said apparatus of the present invention pass through to arrange pressure-bearing to send into and take out assembly, pressure-bearing side-lining assembly and horizontal salvaging group
Part, can successfully take out the fracture cable of residual under wellheadpressure state, and method is simple and easy to operate, efficiency high, safe and reliable.
The said method of the present invention, is capable of taking out the fracture cable of residual under wellheadpressure state, and success rate is high.
Brief description
Fig. 1 is the structural representation of the original well head of the present invention；
Fig. 2 is the present invention structural representation taking out the device of fracture cable in well with pressure；
Fig. 3 is that pressure-bearing of the present invention sends into the structural representation taking out assembly；
Fig. 4 is enlarged diagram at the A of Fig. 3 of the present invention；
Fig. 5 is enlarged diagram at the B of Fig. 3 of the present invention；
Fig. 6 is the structural representation of pressure-bearing side-lining assembly of the present invention；
Fig. 7-8 is the structural representation that the present invention laterally salvages assembly；
Fig. 9 is the present invention internal structure schematic diagram taking out the device of fracture cable in well with pressure；
Figure 10 is enlarged diagram at the C of Fig. 9 of the present invention；
Figure 11 is the present invention flow chart taking out the method for fracture cable in well with pressure.
In figure：
1st, original well head；11st, well head four-way；12nd, the first valve；13rd, the second valve；14th, the 3rd valve；15th, the 4th valve
Door；16th, first manual slide valve；17th, hydraulic gate valve；18th, the second manually gate valve；19th, fracturing head；1a, the 3rd manual brake
Plate valve；
2nd, pressure-bearing is sent into and is taken out assembly；21st, plunger cavity；22nd, plunger rod；23rd, advance head；24th, the first needle-valve；25th, second
Needle-valve；26th, the 3rd needle-valve；27th, first pressure table；28th, second pressure table；29th, flange；2a, pipeline；211st, liquid controling pipe line connects
Mouthful；212nd, watch window；231st, draw-in groove；
3rd, pressure-bearing side-lining assembly；31st, cable blowout control device；32nd, lubricator；33rd, greasing controls head；34th, scrape rope device；35、
Pressure discharges needle valve assembly；331st, blowout prevention box；332nd, greasing pipeline interface；333rd, return fat pipeline interface；334th, hydraulic line connects
Mouthful；
4th, laterally salvage assembly；41st, fishing socket；42nd, steady pin；43rd, back-moving spring；411st, hole slot；412nd, pin-and-hole；413、
Annular groove；
5th, trailing cable.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
The present invention provides a kind of device taking out fracture cable in well with pressure, is arranged on the well head four-way 11 of original well head 1
On, as shown in figure 1, above-mentioned original well head 1 includes well head four-way 11, connect successively positioned at well head four-way 11 top and from the bottom to top
First manual slide valve 16, hydraulic gate valve 17, the second manually gate valve 18, fracturing head 19 and the 3rd manually gate valve
1a, wherein first manual slide valve 16 are connected to the top interface of well head four-way 11；It is provided with first in the side of well head four-way 11
Valve 12 and the 4th valve 15 (right side shown in Fig. 1), are provided with the second valve 13 and the 3rd valve in the opposite side of well head four-way 11
14 (left sides shown in Fig. 1), the wherein the 3rd valve 14 and the 4th valve 15 are respectively positioned on outside.The knot of each part of above-mentioned original well head 1
Structure is prior art, therefore here is no longer illustrated to its structure.It should be noted that when original well head 1 is with the present invention's
When in taking-up well with pressure, the device of fracture cable uses cooperatively, need to disassemble the 4th valve 15.In the present embodiment, above-mentioned
First valve 12, the second valve 13, the 3rd valve 14 and the 4th valve 15 are slide valve.
Refer to Fig. 2 and Fig. 9, in the taking-up well above-mentioned with pressure of the present invention, the device of fracture cable includes pressure-bearing feeding taking-up
Assembly 2, pressure-bearing side-lining assembly 3 and horizontal salvaging assembly 4, wherein：
Pressure-bearing is sent into and is taken out assembly 2, is arranged on the side that the first valve 12 is not connected with well head four-way 11, specially Fig. 2 institute
The right side showing, and install pressure-bearing send into take out assembly 2 when, the 4th valve 15 of above-mentioned original well head 1 is removed, when holding
At the end of force feed enters to take out assembly 2 use, above-mentioned 4th valve 15 can be reinstalled on original well head 1.
Can refer to Fig. 3-5, above-mentioned pressure-bearing is sent into taking-up assembly 2 and included plunger cavity 21, plunger rod 22, propulsion 23, first
Needle-valve 24, the second needle-valve 25, the 3rd needle-valve 26, first pressure table 27 and second pressure table 28, wherein：
One end end of plunger cavity 21 is provided with liquid controling pipe line interface 211, for injecting hydraulic oil；The other end passes through flange
29 are connected to the first valve 12, and the end connecting the first valve 12 in plunger cavity 21 is provided with the observation window in airtight hollow structure
Mouth 212, above-mentioned plunger rod 22 is arranged in the watch window 212 of this hollow structure, being capable of display column by this watch window 212
The mobile status of stopper rod 22.
Plunger rod 22 is movably disposed within plunger cavity 21, and the plunger cavity 21 that stretches out of one end sealing connects the first valve 12
One end, that is, plunger rod 22 can by into plunger cavity 21 injection hydraulic oil and realize move.Preferably, plunger rod 22 sets
There is scale, the scale of plunger rod 22 can be observed by above-mentioned watch window 212, and then the displacement data of acquisition plunger rod 22, with
It is easy to operator preferably to control.Further, the plunger cavity 21 between watch window 212 and flange 29 and observation window
It is provided with pipeline 2a, in order to when injecting hydraulic oil, observe between plunger cavity 21 between mouth 212 and liquid controling pipe line interface 211
Also hydraulic oil can be flowed into it is ensured that the integral pressure of whole plunger cavity 21 is equal in plunger cavity 21 between window 212 and flange 29
Weighing apparatus.
Propulsion 23, is connected to one end that plunger rod 22 stretches out plunger cavity 21, and just well head four-way 11 is arranged, specifically
It is just the fracture cable in well head four-way 11 to be arranged, it is used for for fracture cable being pushed into horizontal salvaging at assembly 4.Can refer to figure
4, one end that above-mentioned propulsion 23 is not connected with plunger rod 22 offers at least one draw-in groove 231, sets described fracture cable for card,
In the present embodiment, above-mentioned draw-in groove 231 is set to two, and the setting that intersects, and each draw-in groove camber structure setting, to guarantee
After propulsion 23 touches fracture cable, by fracture cable clamping and fracture cable can be driven to move.
First needle-valve 24, connects in above-mentioned pipeline 2a on the side of flange 29, the break-make of its controlled tubing giving sufficient strength 2a.The
One pressure gauge 27 is then relative with the first needle-valve 24 and set and be communicated in plunger cavity 21, for detecting watch window 212 and flange 29
Between plunger cavity 21 in pressure.
Second needle-valve 25, in above-mentioned pipeline 2a on the side of liquid controling pipe line interface 211, it is communicated in the external world for connection,
Pressure release can be carried out to whole plunger cavity 21.
3rd needle-valve 26, is communicated in pipeline 2a on the side of liquid controling pipe line interface 211, and its one end is connected with second
Pressure gauge 28, can be detected in the plunger cavity 21 between watch window 212 and liquid controling pipe line interface 211 by second pressure table 28
Pressure.
Continue referring to Fig. 1, above-mentioned pressure-bearing side-lining assembly 3 is arranged on that the 3rd valve 14 is not connected with the second valve 13
Side, and send into pressure-bearing that to take out assembly (2) relative and set.Specifically, as shown in fig. 6, above-mentioned pressure-bearing side-lining assembly 3 include from
The right cable blowout control device 31 setting gradually to a left side, lubricator 32, greasing control 33, scrape device 34 of restricting, wherein：
Cable blowout control device 31 is connected to the 3rd valve 14 by flange, and it includes liquid controling pipe line and greasing pipeline.
Lubricator 32 is connected to one end that cable blowout control device 31 is not connected with the 3rd valve 14, its length be well head four-way 11 with
Under fracture cable (for being in the cable overhanging breaking state in well) length half and preset value sum, in the present embodiment, in advance
If being worth for 1.5-3 rice, by above-mentioned setting, ensure that fracture cable can disposably take out, time-consuming and efficiency.
In lubricator 32, pressure release needle valve assembly 35 is provided with one end of cable blowout control device 31, this pressure discharges
Needle valve assembly 35 includes pressure gauge and needle-valve, and it is used for carrying out pressure release to lubricator 32.
Greasing control 33 is connected to one end of lubricator 32 disconnected cable preventer 31, and is not connected with lubricator 32
One end is provided with blowout prevention box 331, and above-mentioned greasing control 33 is provided with greasing pipeline interface in the end near lubricator 32
332, it is provided with back fat pipeline interface 333 and hydraulic line interface 334 in the one end near blowout prevention box 331, by greasing pump even
Logical greasing pipeline interface 332, injects stop-leak compound into greasing control 33, cable can be allowed movable within when bearing well pressure
And realize effectively sealing.
It is equipped with trailing cable 5, above-mentioned trailing cable in greasing control 33, lubricator 32 and cable blowout control device 31
Greasing control 33 is stretched out in 5 one end, is connected to pulling winch, the other end stretches out cable blowout control device 31, is connected to horizontal salvaging group
Part 4, drives trailing cable 5 mobile by pulling winch, and then makes connected horizontal salvaging assembly 4 mobile.
Continue referring to Fig. 1, above-mentioned horizontal salvaging assembly 4 one end is connected to above-mentioned trailing cable 5, and the other end is placed in second
In valve 13 and the 3rd valve 14, and can be fixed by the 3rd valve 14.Specifically, can refer to Fig. 7-8, above-mentioned horizontal beat
Drag for assembly 4 and include fishing socket 41, steady pin 42 and back-moving spring 43, wherein：
Fishing socket 41 is horizontally placed in the second valve 13 and the 3rd valve 14 (shown in Fig. 9), and its one end connects traction electricity
Cable 5, the other end offers the hole slot 411 of circle, the propulsion 23 sending into taking-up assembly 2 with diameter greater than pressure-bearing of this hole slot 411
Diameter, on the side wall of hole slot 411 symmetrical and run through be provided with pin-and-hole 412.In fishing socket 41 near one end of trailing cable 5
Outer wall is provided with annular groove 413, and the flashboard of above-mentioned 3rd valve 14 can be pressed at this annular groove 413.
It is rotatably connected to above-mentioned steady pin 42 wherein, this steady pin 42 one end is rotatably connected on pin at a pin-and-hole 412
Hole 412 end, the other end rides upon on another pin-and-hole 412, and sets in the rotation junction of steady pin 42 and pin-and-hole 412
It is equipped with back-moving spring 43, specially torsion spring, be capable of the reset to steady pin 42 by this back-moving spring 43.
In the taking-up well above-mentioned with pressure of the present embodiment during the device work of fracture cable, first by pressure-bearing side-lining assembly 3
Interior pressure is adjusted to the preset multiple of the well head pressure of original well head 1, pressure-bearing is sent into the pressure in taking-up assembly 2 and is adjusted to
Equal with well head pressure.
Subsequently by sending into injection hydraulic oil in taking-up assembly 2 to pressure-bearing so that its propulsion 23 is electric by the fracture in well
Cable promotes, and pushes the steady pin 42 on the pin-and-hole 412 riding upon horizontal salvaging assembly 4 open in pushing course, in entrance
State in hole slot 411 (shown in Figure 10).Afterwards by pressure-bearing send into take out assembly 2 the second needle-valve 25 carry out pressure release so that
Propulsion 23 returns back in situ, and now above-mentioned steady pin 42 sets back in the presence of back-moving spring 43, and will be in bending weight
Stacked fracture strain relief clamp fastens.
Afterwards, drive trailing cable 5 mobile by pulling winch to move so that laterally salvaging assembly 4 with trailing cable 5
Dynamic, and move in lubricator 32, until fracture cable is laterally salvaged assembly 4 and driven to outside well head four-way 11.
The present invention, based on the above-mentioned device taking out the cable that ruptures in well with pressure, also provides fracture electricity in a kind of taking-up well with pressure
The method of cable, specifically, as shown in figs. 1-11, comprises the steps：
S10：The preset multiple of the well head pressure to original well head for the pressure in regulation pressure-bearing side-lining assembly.
When carrying out rupturing cable taking-up work, the pressure in pressure-bearing side-lining assembly 3 is required to reach and well head pressure first
The pressure of the lubricator 32 of pressure-bearing side-lining assembly 3 is specifically adjusted to well head pressure by the akin state of power, by greasing control
The greasing pressure of system 33 is adjusted to the preset multiple of well head pressure, is 1.2 times of well head pressure in the present embodiment.Specifically,
Above-mentioned steps S10 comprise the following steps,
S101：Close the second valve, open cable blowout control device.
Connect the liquid controling pipe line of cable blowout control device 31 and greasing pipeline in pressure-bearing side-lining assembly 3, keep preventer to open
Open.
S102：Close the blowout prevention box that greasing controls head, and fill stop-leak compound into greasing control head.
Connect the greasing pipeline interface 332 of greasing control 33 in pressure-bearing side-lining assembly 3, return fat pipeline interface 333
With hydraulic line interface 334；Close the blowout prevention box 331 (static sealing) of greasing control 33 in pressure-bearing side-lining assembly 3, hydraulic control
Closing presure 2MPa, subsequently by stop-leak compound injection greasing control 33, until occur with the fat pipeline that returns returning fat pipeline interface 333
Return fat.
S103：The liquid that needle valve assembly injects preset pressure value to lubricator is discharged by pressure, and judges whether
Leakage.
In the present embodiment, it is to discharge needle valve assembly 35 using a pneumatic test pump and pressure to be connected, then to lubricator
32 injection test mediums, pressure value 50MPa, pressurize 5min, checking whether there is leakage, when there is leakage, stopping injection, and
Check relevant issues.When there is not leakage, the pressure in release lubricator 32 is to well head pressure, and makes stop-leak compound inject pressure
For 1.2 times of well head pressure, later on second valve 13, now pressure-bearing side-lining assembly 3 is connected with well head four-way 11, and
Pressure in pressure-bearing side-lining assembly 3 is same or like with well head pressure.
S20：Adjust pressure-bearing and send into the pressure taking out in assembly to equal with well head pressure.
Manually pump is connected to pressure-bearing and sends into the liquid controling pipe line interface 211 taking out assembly (2), and manual pump is joined pressure
Power table.Close the first valve 12, later on pressure-bearing is sent into the first needle-valve 24 taking out assembly (2) and the 3rd needle-valve 26, passed through
Manual pump sends into pumps hydraulic oil in the plunger cavity 21 take out assembly (2) to pressure-bearing, can be observed by pressure Table A and pressure gauge B
The pressure of the hydraulic oil of injection, until pressure value is equal to well head pressure, pressurize 5min, is not allow for visible seepage.Later on
First valve 12, now well head four-way 11 and pressure-bearing send into and take out assembly 2 and connect, and pressure is identical.
S30：Drive pressure-bearing to send into taking-up assembly to salvage on assembly the fracture cable connection in well head four-way horizontal.
S301：Before the cable that will rupture is connected with horizontal salvaging assembly 4, first ensure that at the fracture cable within well head
In cavity centre position, send into the propulsion of the propulsion 23 taking out assembly 2 in order to pressure-bearing, therefore, arranged by original well head 1
On the left of the lower flashboard chamber of three flashboard cable blowout control device (not shown in figure 1)s above the 3rd manually gate valve 1a and middle flashboard chamber
Right side is closed, and keeps other flashboards to be in opening, so that fracture cable is in cavity centre position.
S302：Manually pump injects hydraulic oil into plunger cavity 21, drives pressure-bearing to send into the plunger rod 22 taking out assembly 2
And propulsion 23 gos deep into well head four-way 11, and move to fracture cable, with propulsion 23 deepens continuously, propulsion 23 connects
Touch fracture cable, and this fracture cable is pushed well head four-way 11 and connect the in the hole that pressure-bearing sends into taking-up assembly 2, in this process
In, can judge whether above-mentioned fracture cable enters the in the hole of well head four-way 11 according to the pressure value of manual pump pressure table, specifically,
When the cable that ruptures enters the in the hole of well head four-way 11, the pressure value of above-mentioned manual pump pressure table should increased, pressure value
About it is instantly increased 1MPa.When the pressure value of manual pump pressure table does not increase, then explanation fracture cable does not enter into well head four
Logical 11 in the hole, now needs to close the first needle-valve 24 that pressure-bearing sends into taking-up assembly 2, and opens the second needle-valve 25, make pressure-bearing
Send into and take out plunger cavity 21 pressure positioned at watch window 212 right side for the assembly (2) less than well head pressure.Because well head pressure is higher than
Pressure-bearing is sent into and is taken out plunger cavity 21 pressure that assembly (2) is located at watch window 212 right side, in the presence of pressure differential, its plunger
Bar 22 and propulsion 23 can return back in situ, subsequently repeat above-mentioned progradation and detection process again, until fracture electricity
Cable enters the in the hole of well head four-way 11.
S303：Continue to inject hydraulic oil into plunger cavity 21, drive propulsion 23 drive fracture cables continue deeper into through
Second valve 13, and fracture cable is pushed in the fishing socket 41 of the 3rd valve 14, now horizontal salvaging crossed by fracture cable
The steady pin 42 of assembly 4, makes steady pin 42 one end depart from pin-and-hole 412, and compression reseting spring 43.In the process, manually
The pressure value of pump pressure table can increase, and the change that can pass through the pressure value of this manual pump pressure table determines whether fracture cable enters
In fishing socket 41.
S304：Close pressure-bearing and send into the first needle-valve 24 taking out assembly 2, and open the second needle-valve 25, make plunger rod 22 with
And propulsion 23 returns back in situ, this process illustrates in above-mentioned steps S302, repeats no more.
S305：By back-moving spring 43, steady pin 42 is resetted, and be fixedly connected fracture cable.Leave in propulsion 23 and beat
During dipper 41, above-mentioned fracture cable is rendered as bending overlapping state, and now steady pin 42 returns in the presence of back-moving spring 43
Recovery position, and catch on the end position of above-mentioned fracture cable, fracture cable is fixed.
After the above step is finished, close the first valve 12, slow pressure-bearing of opening sends into the first needle-valve taking out assembly (2)
24 and second needle-valve 25, the pressure on release the first valve 12 right side, that is, release pressure-bearing send into the pressure taken out in assembly (2)
Power.
S40：Trailing cable is driven to draw described horizontal salvaging assembly, the cable that will rupture takes out.
S401：The fluid control pressure of the blowout prevention box 331 of release pressure-bearing side-lining assembly 3, opens the 3rd valve 14 and will laterally beat
Drag for assembly 4 to unclamp, subsequently drive traction cable to move 0.5 meter by pulling winch, then manual slowly closing the 3rd valve 14,
If turned off during, operation moment of torsion increase suddenly, then prove fracture cable be smoothly connected with fishing socket 41.
S402：Trailing cable 5 is driven to draw horizontal salvaging assembly 4 to lubricator 32 near greasing control by pulling winch
33 end, and judge whether to remain fracture cable in well head four-way 11.
Specifically, when trailing cable 5 draw horizontal salvage such as 10 meters of assembly 4 one segment distance when, by the original well head 1 of closing
The 3rd manually gate valve 1a, the hanging cable of well head is cut off, then proceed to draw, until cannot draw, explanation
Laterally salvage assembly 4 and be towed to the end near greasing control 33 for the lubricator 32, now by manual slowly closing
Second valve 13, if turned off during, smooth operation, moment of torsion increases situation suddenly, and the second valve 13 completely closes,
Then prove that fracture cable has fully entered the second valve 13 left side inner chamber, complete the traction of cable of rupturing, close first manual
Slide valve 16.If in the second valve 13 closing process, operation moment of torsion increases suddenly, then prove that fracture cable also remains in well
Interior.At this time, it may be necessary to the cable blowout control device 31 sealing fracture cable of pressure-bearing side-lining assembly 3, close the upper of cable blowout control device 31
Half envelope type flashboard and in half envelope type flashboard, and inject stop-leak compound, the borehole pressure that greasing pressure is equal to 1.2 times.Afterwards by blowout prevention
Pipe 32 is taken apart, and the horizontal fracture cable to cable blowout control device 31 for the assembly 4 of salvaging is cut near one end of cable blowout control device 31
Disconnected, will laterally salvage assembly 4 and connected fracture cable will take out, and by trailing cable 5 with cut off after well head four-way
Fracture cable connection in 11, then reinstalls lubricator 32.By greasing pipeline to injection sealing in greasing control 33
Fat, greasing pressure is equal to 1.2 times of well head pressure, then discharges the fluid control pressure of blowout prevention box 331.Stop to cable blowout control device 31 note
Fat, open cable blowout control device 31 upper half envelope type flashboard and in half envelope type flashboard.Continue through pulling winch and drive trailing cable
5, draw the fracture cable in the well head four-way 11 after cutting off.As soon as after often drawing segment distance (5 meters about), detecting one time second
Whether there is fracture cable in valve 13, if there are fracture cable, continue traction, and so on, until the second valve 13 can be smooth
Close, illustrate that residual disconnected cable all takes out.
S403：Needle valve assembly 35, release the 3rd valve 14 left pressure are discharged by the pressure on lubricator 32.Afterwards will
4th valve 15 of original well head 1 is arranged on the first valve 12, recovers original well head 1, and prepare to drop in follow-up well instrument
Salvage.
Obviously, the above embodiment of the present invention is used for the purpose of clearly example of the present invention being described, and is not right
The restriction of embodiments of the present invention.For those of ordinary skill in the field, also may be used on the basis of the above description
To make other changes in different forms.There is no need to be exhaustive to all of embodiment.All this
Any modification, equivalent and improvement made within the spirit of invention and principle etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of device taking out fracture cable in well with pressure, is arranged on original well head (1), described original well head (1) includes
Well head four-way (11), positioned at first valve (12) of well head four-way (11) side, and be located at well head four-way (11) opposite side and
The second valve (13) and the 3rd valve (14) that set gradually are it is characterised in that the described dress taking out fracture cable in well with pressure
Put including：
Pressure-bearing is sent into and is taken out assembly (2), is arranged on the side that the first valve (12) is not connected with well head four-way (11)；
Pressure-bearing side-lining assembly (3), is arranged on the side that the 3rd valve (14) is not connected with the second valve (13), and sends into pressure-bearing
Take out assembly (2) relatively to set；
Laterally salvage assembly (4), one end is connected with trailing cable (5), and the other end is placed in the second valve (13) and the 3rd valve
(14) in, and can be fixed by the 3rd valve (14), described trailing cable (5) is placed in described pressure-bearing side-lining assembly (3).
2. the device taking out fracture cable in well with pressure according to claim 1 is it is characterised in that described pressure-bearing feeding takes
Go out assembly (2) to include:
Plunger cavity (21), one end is provided with liquid controling pipe line interface (211), and the other end is connected to the first valve by flange (29)
(12), and connect the first valve (12) end be provided with the watch window (212) in airtight hollow structure；
Plunger rod (22), is movably disposed within described plunger cavity (21), and one end sealing stretch out described plunger cavity (21)；
Propulsion head (23), is connected to one end that plunger rod (22) stretches out plunger cavity (21), and just described well head four-way (11) is set
Put, one end that described propulsion head (23) is not connected with plunger rod (22) offers at least one draw-in groove (231), set for card described disconnected
Split cable；
Pipeline (2a), two ends are respectively communicated with the plunger cavity (21) between watch window (212) and flange (29) and observe
On plunger cavity (21) between window (212) and liquid controling pipe line interface (211)；
First needle-valve (24), connection is in pipeline (2a) on the side of flange (29)；
Second needle-valve (25), connection is in pipeline (2a) on the side of liquid controling pipe line interface (211)；
First pressure table (27) is relative with the first needle-valve (24) and set and be communicated in plunger cavity (21)；
Second pressure table (28), is communicated in the side near liquid controling pipe line interface (211) for the pipeline (2a) by the 3rd needle-valve (26)
On.
3. the device taking out fracture cable in well with pressure according to claim 1 is it is characterised in that described pressure-bearing side-lining
Assembly (3) includes：
Cable blowout control device (31), is connected to the 3rd valve (14)；
Lubricator (32), is connected to one end that cable blowout control device (31) is not connected with the 3rd valve (14)；
Pressure release needle valve assembly (35), connection is on described lubricator (32)；
Greasing controls head (33), is connected to one end of lubricator (32) disconnected cable preventer (31), and is not connected with lubricator
(32) one end is provided with blowout prevention box (331)；
Described trailing cable (5) sequentially passes through greasing and controls head (33), lubricator (32) and cable blowout control device (31), is connected to
Described horizontal salvaging assembly (4).
4. the device taking out fracture cable in well with pressure according to claim 3 is it is characterised in that described lubricator (32)
Length be well head four-way (11) fracture cable length below half and preset value sum.
5. the device taking out fracture cable in well with pressure according to claim 4 is it is characterised in that described horizontal salvaging group
Part (4) includes：
Fishing socket (41), is horizontally placed in described second valve (13) and the 3rd valve (14), its one end connects described traction
Cable (5), the other end offers hole slot (411), on the side wall of described hole slot (411) symmetrical and run through be provided with pin-and-hole (412)；
Steady pin (42), one end is rotatably connected on one of pin-and-hole (412) place, and the other end rides upon another pin-and-hole (412)
On
Back-moving spring (43), is connected to described steady pin (42), for resetting to steady pin (42).
6. a kind of method taking out fracture cable in well with pressure is it is characterised in that comprise the steps：
The preset multiple of the well head pressure to original well head for the pressure in regulation pressure-bearing side-lining assembly；
Adjust pressure-bearing and send into the pressure taking out in assembly to equal with well head pressure；
Drive pressure-bearing to send into taking-up assembly to salvage on assembly the fracture cable connection in well head four-way horizontal；
Trailing cable is driven to draw described horizontal salvaging assembly, the cable that will rupture takes out.
7. the method taking out fracture cable in well with pressure according to claim 6 is it is characterised in that described regulation pressure-bearing side
Pressure in traction component includes to the preset multiple of well head pressure：
Close the second valve, open cable blowout control device；
Close the blowout prevention box that greasing controls head, and fill stop-leak compound into greasing control head；
The liquid that needle valve assembly injects preset pressure value to lubricator is discharged by pressure, and judges whether to leak；
When there is not leakage, the pressure in release lubricator is to well head pressure, and makes stop-leak compound inject pressure for well head pressure
Preset multiple, open the second valve.
8. the method taking out fracture cable in well with pressure according to claim 7 is it is characterised in that described regulation pressure-bearing is sent
Enter the pressure taking out in assembly extremely to include equal to well head pressure：
Close the first valve, open pressure-bearing and send into the first needle-valve taking out assembly and the 3rd needle-valve；
Hydraulic oil is injected to plunger intracavity by liquid controling pipe line interface, and plunger is judged by first pressure table and second pressure table
Whether cavity pressure is equal to well head pressure；
When plunger cavity pressure is equal to well head pressure, open the first valve.
9. the method taking out fracture cable in well with pressure according to claim 8 is it is characterised in that described driving pressure-bearing is sent
Enter to take out assembly the fracture cable connection in well head four-way is included in horizontal salvaging on assembly：
Inject hydraulic oil to plunger intracavity, drive pressure-bearing to send into the plunger rod taking out assembly and advance head to move to fracture cable
Dynamic；
Continue to inject hydraulic oil to plunger intracavity, drive propulsion headband dynamic circuit breaker to split cable and move to horizontal assembly of salvaging, until disconnected
Split cable and cross the horizontal steady pin salvaging assembly；
Close pressure-bearing and send into the first needle-valve taking out assembly, and open the second needle-valve, make plunger rod and propulsion head return back to former
Position；
By back-moving spring, steady pin is resetted, and be fixedly connected fracture cable.
10. the method taking out fracture cable in well with pressure according to claim 9 is it is characterised in that described driving is drawn
Assembly is laterally salvaged, the cable that will rupture takes out and includes described in cable pulling：
Trailing cable traction is driven laterally to salvage one end that assembly controls head to the lubricator of pressure-bearing side-lining assembly near greasing
Place, and judge whether to remain fracture cable in well head four-way；
When not remaining fracture cable in well head four-way, close the second valve；
In well head four-way during residual fracture cable, take out residual fracture cable by following steps：
Close cable blowout control device, and to cable blowout control device upper, between half envelope type flashboard injection be equivalent to well head pressure and preset times
The stop-leak compound of number；
Open lubricator, the horizontal fracture cable to cable blowout control device for the assembly of salvaging is cut near one end of cable blowout control device
Disconnected, will laterally salvage assembly and connected fracture cable will take out, and by trailing cable with cut off after well head four-way in
Fracture cable connection；
Reinstall lubricator, recover the pressure state during traction of pressure-bearing side-lining assembly each part；
Continue the fracture cable in traction well head four-way, until fracture cable fully enters the left side cavity of the second valve, close
Second valve.
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| CN201610919216.7A CN106401519B (en) | 2016-10-21 | 2016-10-21 | A kind of device and method with pressure taking out fracture cable in well |
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|---|---|---|---|
| CN201610919216.7A CN106401519B (en) | 2016-10-21 | 2016-10-21 | A kind of device and method with pressure taking out fracture cable in well |
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| CN106401519B (en) | 2019-01-22 |
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