CN108590582A - The method for establishing bailing well channel - Google Patents
The method for establishing bailing well channel Download PDFInfo
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- CN108590582A CN108590582A CN201810219419.4A CN201810219419A CN108590582A CN 108590582 A CN108590582 A CN 108590582A CN 201810219419 A CN201810219419 A CN 201810219419A CN 108590582 A CN108590582 A CN 108590582A
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- well
- channel
- sealing
- tubing string
- steam
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 87
- 210000002445 nipple Anatomy 0.000 claims abstract description 69
- 238000006243 chemical reaction Methods 0.000 claims abstract description 59
- 238000010276 construction Methods 0.000 claims abstract description 37
- 239000010779 crude oil Substances 0.000 claims abstract description 28
- 239000003129 oil well Substances 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000505 pernicious effect Effects 0.000 claims description 2
- 238000012797 qualification Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 14
- 230000001681 protective effect Effects 0.000 description 12
- 239000004615 ingredient Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 210000004907 gland Anatomy 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000010793 Steam injection (oil industry) Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- 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)
- Excavating Of Shafts Or Tunnels (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of methods for establishing bailing well channel, are related to oil-gas mining field comprising following steps：According to the actual conditions reasonable placement Construction traffic in well site, the water-tank lorry in the Construction traffic is connect by high-pressure fire hose with wellhead casing pipe valve slips, to check oil well；Blowout preventer, lubricator, interface switching device, conversion wellhead sealing device and anti-channeling limiter are installed successively on well mouth of oil well；By tubing string by the position that is hampered in the crane tripping in pit shaft in Construction traffic, the tubing string includes from bottom to top：Radially nozzle, the hollow pipe nipple of multiple quick access with spray-hole；Etc..The application can be handled the crude oil of the sticky of casing wall surface or condensation in the more narrow place of well site area, then quickly establish involving swab channel, and operating cost can also be effectively reduced compared with light maintenance operation.
Description
Technical field
The present invention relates to oil-gas mining field, more particularly to a kind of method for establishing bailing well channel.
Background technology
In the higher oil well of viscosity of crude, such as viscosity of crude, in 10000 centipoises or so, crude oil is when temperature reduces
The phenomenon that will appear crude oil condensation, if pulled out the crude oil of underground by dredging vehicle, since there is condensation at station on oil pipe wall surface
Crude oil, to will appear the problem of swab tripping in difficulty.
Solving bailing well at present, can not to descend the main method of fishing be underground light maintenance operation because crude oil is sticky, specifically
It is washed to use working rig tripping in oil pipe drifting and carrying out cycling hot, thoroughly to clean the sticky crude oil and knot on shaft sleeve tube wall
Dirt, but above-mentioned operating type has the following problems：When the first job execution require wellsite have enough areas stand up derrick,
It puts oil pipe and parks hot wash pump truck and water-tank lorry, job execution condition cannot be satisfied for the narrow limited well site of area；
Second after channel is established in operation, and need to working rig be moved and be cleared up after the oil pipe of well site could carry out lower step involving swab construction, herein
During handing-over, the crude oil that stratum spues may condense to form obstruction viscous crude again in the wellbore, and then lead to swab still
Right tripping in is difficult.
Invention content
In order to overcome the drawbacks described above of the prior art, the technical problem to be solved is that provide one kind for the embodiment of the present invention
The method for establishing bailing well channel, can be in the more narrow place of well site area to the original of the sticky of casing wall surface or condensation
Oil is handled, then quickly establishes involving swab channel, and operating cost can also be effectively reduced compared with light maintenance operation.
The specific technical solution of the embodiment of the present invention is：
A method of bailing well channel being established, the method for establishing bailing well channel includes the following steps：
According to the actual conditions reasonable placement Construction traffic in well site, the water-tank lorry in the Construction traffic is passed through into high pressure water
Tengential belt is connect with wellhead casing pipe valve slips, to check oil well；
Blowout preventer, lubricator, interface switching device, conversion wellhead sealing device and anti-channeling are installed successively on well mouth of oil well
Limiter；
By tubing string by the position that is hampered in the crane tripping in pit shaft in Construction traffic, the tubing string includes from bottom to top：
Radially nozzle, the hollow pipe nipple of multiple quick access with spray-hole；
The upper end of the hollow pipe nipple of the quick access is connected to the superconduction steam coach in Construction traffic by hose, by described
Superconduction steam coach injects steam flush into tubing string and reaches predetermined time period, and the waste liquid artesian well muzzle tube valve for rinsing formation returns
It flow in the water-tank lorry of ground；
Suspend the superconduction steam coach and inject steam into tubing string, continues by the hollow pipe nipple of root tripping in quick access to the tubing string
Be hampered position again, then injects steam flush into tubing string by the superconduction steam coach and reach predetermined time period, rinses and is formed
Waste liquid artesian well muzzle tube valve backflow into ground water-tank lorry；
It so cycles through steam to replace out viscous crude oil flushing in well, until nozzle to perforated interval top circle or set conjugates
It sets, and artesian well muzzle tube valve backflows until the waste liquid on ground becomes water；
Act the tubing string to establish bailing well channel.
In a preferred embodiment, it in carrying out checking process to oil well, specifically includes：Well head pressure is surveyed, if
It needs to bleed off pressure, opens sleeve valve and bled off pressure；Detect hydrogen sulfide or other harmful gas in the gas being discharged from sleeve valve
The content of body simultaneously carries out Supervision Measures.
In a preferred embodiment, be hampered position in tubing string is by the crane tripping in pit shaft in Construction traffic
During, on crane one side during running string, on one side in the upper end of the tubing string not hollow pipe nipple of connection breaking quick access.
In a preferred embodiment, the superconduction steam coach and the water-tank lorry are rested in far from well mouth of oil well
Position.
In a preferred embodiment, further include check valve in the tubing string, the check valve is connected to the spray
Between mouth and the hollow pipe nipple of the quick access, the check valve can be connected from the hollow pipe nipple of the quick access to the nozzle.
In a preferred embodiment, it by the upper end connecting bend of the hollow pipe nipple, is then connected on elbow
Gate valve, then connection flexible pipe is to be connected to the superconduction steam coach in Construction traffic on gate valve, after manifold of ground pressure testing qualification, leads to
It crosses the superconduction steam coach and injects steam into tubing string.
In a preferred embodiment, tubing string is passed through into the position that is hampered in the crane tripping in pit shaft in Construction traffic
When upper lifting pipe post pre-determined distance.
In a preferred embodiment, the interface switching device includes：
Upper crossover flange, the upper crossover flange are provided with pressure testing interface；
Lower crossover flange, the lower crossover flange are provided with opening, and connector is provided in the opening, is set in the connector
It is equipped with axially extending bore；
The sealing element made of flexible material, the upper end are fixedly connected on the lower end of the upper crossover flange；It is described close
Central passage is set in sealing, and the central passage is connected with the pressure testing interface and the axially extending bore；The sealing
The inside constriction of side wall of the part close to middle part, to which the central passage has the upper channel section close to upper end, close to lower end
Lower passage section, and close to middle part and the central passage section between the upper channel section and lower passage section, and
The internal diameter of the central passage section is less than the internal diameter of the upper channel section and the lower passage section.
In a preferred embodiment, the conversion wellhead sealing device includes：
Pressure conversion ontology, the pressure conversion ontology have the pressure conversion channel worn for hollow pipe nipple；
The first sealing mechanism in the pressure conversion body outer wall is set, and first sealing mechanism includes multiple transverse directions
The first pipe of extension, multiple first pipes are connected with the pressure conversion channel, divide in multiple first pipes
It is not provided with the first sealing-plug, first sealing-plug can move in the accordingly first pipe；
It is arranged in the pressure conversion body outer wall and the second sealing mechanism below first sealing mechanism, institute
It includes multiple second pipes being laterally extended, multiple second pipes and pressure conversion channel phase to state the second sealing mechanism
It is connected to, is respectively arranged with the second sealing-plug in multiple second pipes, second sealing-plug can be accordingly described second
It is moved in pipeline.
In a preferred embodiment, the nozzle includes outer housing, and cavity is formed in the outer housing, described
Spray-hole is radially located on the outer housing, and the spray-hole is connected with the cavity, also has on the outer housing
There are trepanning in axial direction, the trepanning to be connected with the cavity.
Technical scheme of the present invention has following notable advantageous effect：
The method for establishing bailing well channel in the application can solve viscous crude involving swab and reproduce bottleneck problem, reach safety,
Fast and effectively establish involving swab channel.Especially in construction in the limited space in well site, this establishes the method in bailing well channel
In only need to put a crane and remove hollow pipe nipple, and superconduction steam coach and water-tank lorry then can be remotely connected by manifold
To establish circulation canal, so solves not the youthful and the elderly and stop well asking for can not constructing due to well site limited space can not stand up derrick
Topic.Meanwhile by interface switching device, conversion wellhead sealing device also effectively relieve well top stopped for long time release with pressure it is not clean, pressure
The safe and environment-friendly hidden danger such as unreal, the well head aging easily leakage of well.In addition, this establishes the method in bailing well channel in individual well time construction
Spent expense is at 30,000 yuan or so in the process, less than the half of light maintenance operating cost under conventional well, therefore, have compared with
Big cost advantage.
With reference to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies the original of the present invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms that profit requires, embodiments of the present invention include many changes, modifications and are equal.For a kind of reality
The feature that the mode of applying is described and/or shown can be made in a manner of same or similar in one or more other embodiments
With, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
Description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended to limit model disclosed by the invention in any way
It encloses.In addition, the shape and proportional sizes etc. of each component in figure are only schematical, it is used to help the understanding of the present invention, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
Implement the present invention to select various possible shapes and proportional sizes as the case may be.
Fig. 1 is the flow chart for the method that bailing well channel is established in the embodiment of the present invention；
Fig. 2 is the schematic diagram of well mouth of oil well in the method for established in the embodiment of the present invention bailing well channel；
Fig. 3 is the structural schematic diagram of interface switching device in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram that wellhead sealing device is converted in the embodiment of the present invention.
Specific implementation mode
With reference to the drawings and the description of the specific embodiments of the present invention, the details of the present invention can clearly be understood.But
It is the specific implementation mode of invention described herein, is only used for explaining the purpose of the present invention, and cannot understands in any way
At being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that the arbitrary possible change based on the present invention
Shape, these are regarded as belonging to the scope of the present invention.It should be noted that when element is referred to as " being set to " another yuan
Part, it can be directly on another element or there may also be elements placed in the middle.When an element is considered as " connection "
Another element, it can be directly to another element or may be simultaneously present centering elements.Term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, can also be inside two elements
Connection, can be directly connected, can also indirectly connected through an intermediary, for the ordinary skill in the art,
The concrete meaning of above-mentioned term can be understood as the case may be.Term as used herein " vertical ", " horizontal ",
"upper", "lower", "left", "right" and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and the those skilled in the art for belonging to the application
Normally understood meaning is identical.The term used in the description of the present application is intended merely to describe specifically to implement herein
The purpose of mode, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more relevant institutes
Any and all combinations of list of items.
In order to be handled the crude oil of the sticky of casing wall surface or condensation in the more narrow place of well site area,
Involving swab channel is quickly established again, operating cost can be effectively reduced compared with light maintenance operation, is proposed one kind in this application and is built
The method in vertical bailing well channel, Fig. 1 are the flow chart for the method that bailing well channel is established in the embodiment of the present invention, as shown in Figure 1,
The method for establishing bailing well channel may comprise steps of：
S101：According to the actual conditions reasonable placement Construction traffic in well site, by the water-tank lorry 12 in the Construction traffic
High-pressure fire hose 11 is connect with wellhead casing pipe valve slips, to check oil well.
The Construction traffic being related to required in this application includes water-tank lorry 12, superconduction steam coach 2, for assisting superconduction
The transport vehicle 1 and a crane with driving steam unit of steam coach 2.Wellsite may be without enough when due to construction
Area stand up derrick, be more likely to can not to park water-tank lorry 12, superconduction steam coach 2, for assisting having for superconduction steam coach 2 to drive
The transport vehicle 1 etc. of dynamic steam unit, therefore, the water-tank lorry 12 in Construction traffic can be parked in far from well head otherly
Water-tank lorry 12, is then connect using high-pressure fire hose 11 with wellhead casing pipe valve slips, here avoids water-tank lorry 12 and account for by side
The problem of can not may parking lower water-tank lorry 12 at all with well site space and well site.Wellhead casing pipe valve card is connected in water-tank lorry 12
After watt, then well head pressure is surveyed, if desired bled off pressure, opened sleeve valve and bled off pressure；Meanwhile detection is discharged from sleeve valve
Gas in the content of hydrogen sulfide or other pernicious gases and carry out Supervision Measures.
S102：Blowout preventer 7, lubricator, interface switching device 6, conversion wellhead sealing device 6 are installed successively on well mouth of oil well
And anti-channeling limiter 4.
In this step, Fig. 2 is the schematic diagram of well mouth of oil well in the method for established in the embodiment of the present invention bailing well channel,
As shown in Fig. 2, it is close to install blowout preventer 7, lubricator, interface switching device 6, conversion well head successively in sequence on well mouth of oil well
Seal device 6 and anti-channeling limiter 4.Blowout preventer 7 and lubricator are used for when down-hole pressure is out of control as well control device to pit shaft
Effectively insulated.
In this application, interface switching device 6 be used under hollow 8 lower going-into-well of pipe nipple of quick access or on when extracting to quick access
The side wall of hollow pipe nipple 8 is cleaned, to remove the crude oil adhered on the hollow pipe nipple of quick access 8.Meanwhile interface switching device 6 is also
It can be used for seal shaft space, wellbore pressure can also be measured.Specifically, Fig. 3 is interface conversion in the embodiment of the present invention
The structural schematic diagram of device, as shown in figure 3, the interface switching device provided in the application embodiment may include：Upper conversion
Flange 1A, the upper crossover flange 1 are provided with pressure testing interface 101A；Lower crossover flange 2A, the lower crossover flange 2A are provided with
Be open 201A, is provided in connector 3A, the connector 3A in the opening 201A and is provided with axially extending bore 301A；By flexible material
Sealing element 4A made of material, the upper end is fixedly connected on the lower end of the upper crossover flange 1A；In being arranged in the sealing element 4A
Heart channel 401A, the central passage 401A are connected with the pressure testing interface 101A and the axially extending bore 301A；It is described
The inside constriction of side walls of the sealing element 4A close to middle part, to which the central passage 401A has the upper channel section close to upper end
4011A, the lower passage section 4012A close to lower end, and it is close to middle part and logical positioned at the upper channel section 4011A and lower part
Central passage section 4013A between road section 4012A, and the internal diameter of the central passage section 4013A is less than the upper channel
The internal diameter of section 4011A and the lower passage section 4012A.The interface switching device of the application embodiment, by upper conversion
Sealing element 4A, the inside constriction of side walls of the sealing element 4A close to middle part, to seal are set between flange 1A and lower crossover flange 2A
The central passage 401A of part 4A forms the central passage section 4013A that internal diameter is less than upper and lower ends internal diameter at the position close to middle part,
When the hollow pipe nipple of quick access is worn in central passage 401A, the smaller central passage section 4013A of internal diameter size can be wrapped tightly
The outer wall of the hollow pipe nipple of quick access is wrapped, to which while realizing wellhead sealing, the original of the hollow pipe nipple outer wall of quick access will be adhered to
Oil strikes off, and avoids crude oil landing pollution well site environment.
In the present embodiment, upper crossover flange 1 can be in substantially pie, be used to be connected with Wellhead packer 7, thereon
The opening 201A of the central passage 401A and lower crossover flange 2A of the pressure testing interface 101A and sealing element 4A of setting connect, with
Form the channel worn for the hollow pipe nipple activity of quick access.Pressure testing interface 101A is preferably provided in the middle part of crossover flange 1A,
Multiple first through hole 102A on the outside of pressure testing interface 101A, multiple first through hole can be provided on upper crossover flange 1A
102A is arranged around pressure testing interface 101A in the form of annular array.First through hole 102A is used to wear for fastening bolt, to
The connection of upper crossover flange 1A and blowout preventer 7 are realized by fastening bolt.In the present embodiment, lower crossover flange 2A is substantially
It can be in pie, be used to be connected with head valve.Likewise, opening 201A is preferably provided in lower crossover flange 2A
Portion, multiple the second through-hole 202A being located on the outside of opening 201A are provided on lower crossover flange 2A, and multiple second through-hole 202A enclose
It is arranged in the form of annular array around opening 201A.Second through-hole 202A for fastening bolt for wearing, to by fastening spiral shell
Bolt realizes the connection of lower crossover flange 2A and head valve.In the present embodiment, sealing element 4A is substantially cylindrical in shape, can be with
By rubber etc. there is flexible material to be made, to when not wear quick access hollow short by the central passage 401A of sealing element 4A
When section, the upper end of lower end and connector 3A are separately；When its central passage 401A wears the hollow pipe nipple of quick access, sealing element 4A energy
Axial elongation enough occurs, to make its lower end push up the upper end of affixed head 3A.In the present embodiment, upper channel section 4011A and
The internal diameter of lower passage section 4012A is preferably equal, and upper channel section 4011A and lower passage section 4012A is symmetrical arranged.In order to
The movement of the hollow pipe nipple of quick access is oriented to, the inner wall of upper channel section 4011A can tilt down to form the first guiding incline
The inner wall of 4014A, lower passage section 4012A can be formed slopely the second guiding incline 4015A upwards.The upper channel sequentially formed
The cross sectional shape of section 4011A and lower passage section 4012A can be in substantially isosceles trapezoid shape as shown in Figure 3, in this way, quick access is hollow
The end of pipe nipple it is logical can to smoothly enter top under the guiding role of the first guiding incline 4014A and the second guiding incline 4015A
Road section 4011A and lower passage section 4012A.In order to protect sealing element 4A from extraneous infringement, the opening of lower crossover flange 2A
Protective shell 5A, the lower face flush of the lower end of protective shell 5A and lower crossover flange 2A, sealing element 4A can be inserted in 201A
It is accommodated in protective shell 5A, connector 3A is arranged in protective shell 5A.In the present embodiment, protective shell 5A can substantially be opened in both ends
The tubular of mouth, lower end is plugged in the opening 201A of lower crossover flange 2A and fixation, the side that protective shell 5 is preferably connected through a screw thread
Formula is removably arranged in opening 201.In addition, in order to enable positions of the sealing element 4A in protective shell 5A to fix, sealing
Outer walls of the part 4A close to upper end extends outward to form extension 402A, and the lower end of extension 402A, which is recessed inwardly, is formed with limiting slot
403A.The upper end of protective shell 5A raises up to form positive stop key 501A, and positive stop key 501A is plugged in the limiting slot 403A.It is logical
The mating reaction of limiting slot 403A and positive stop key 501A are crossed, sealing element 4A can be made to be fixed in protective shell 5A, is prevented close
Play occurs for sealing 4A.The upper end of protective shell 5A is preferably fixedly connected with upper crossover flange 1A, specifically, protective shell 5A is close to upper
The outer wall at end is arranged with gland, and gland is fixedly connected with upper crossover flange, and outer walls of the sealing element 4A close to upper end is fitted in gland
Inner wall.In the present embodiment, gland substantially can be in the tubular of both ends open 201A, and the upper end can be by welding
It is fixed on the bottom wall of crossover flange.Protective shell 5 can be achieved a fixed connection with gland by way of screw thread.
In this application, conversion wellhead sealing device 6 ensures construction then for realizing the real-time sealing of pressure conversion and well head
Continuity and safety.Specifically, Fig. 4 is the structural schematic diagram for converting wellhead sealing device in the embodiment of the present invention, such as Fig. 4 institutes
Show, the conversion wellhead sealing device 6 in the application embodiment may include：Pressure conversion ontology 3B, the pressure conversion ontology
3B has the pressure conversion channel 301B worn for the hollow pipe nipple (not shown) of quick access；It is arranged outside the pressure conversion ontology 3B
First sealing mechanism 1B, the first sealing mechanism 1B of wall includes multiple first pipe 101B being laterally extended, multiple described
First pipe 101B is connected with the pressure conversion channel 301B, and first is respectively arranged in multiple first pipe 101B
Sealing-plug 1011B, the first sealing-plug 1011B can be moved in the accordingly first pipe 101B；It is arranged in the pressure
Power converts ontology 3B outer walls and the second sealing mechanism 2B below the first sealing mechanism 1B, second sealing mechanism
2B includes multiple second pipe 202B, multiple second pipe 202B being laterally extended and the pressure conversion channel 301B phases
Connection, the second sealing-plug 2022B, the second sealing-plug 2022B is respectively arranged in multiple second pipe 202B can be
Accordingly moved in the second pipe 202B.The conversion wellhead sealing device of the application embodiment, by pressure conversion sheet
The first sealing mechanism 1B and the second sealing mechanism 2B is arranged in body 3B outer walls, and respectively in multiple first pipes of the first sealing mechanism 1B
Energy the first sealing-plug 1011B movable within is set in multiple second pipe 202B of road 101B and the second sealing mechanism 2B
It is being equipped with the hollow pipe nipple of quick access with the second sealing-plug 2022B, the pressure conversion channel 301B to work as pressure conversion ontology 3B
When, state can be removed according to the hollow pipe nipple of quick access so that the first sealing-plug 1011B and the second sealing-plug 2022B and quick access
The outer wall of hollow pipe nipple is in contact or is separated, so as to during the hollow pipe nipple of quick access removes, effectively realize well head
Pressure conversion and sealing.First sealing mechanism 1B and the second sealing mechanism 2B can be respectively provided with the first working condition and the second work
Make state.When the first sealing mechanism 1B is in the first working condition, pressure conversion channel 301B corresponds to multiple first pipes
The hollow pipe nipple of quick access is equipped at the position of 101B, the end of multiple first sealing-plug 1011B is fitted in the hollow pipe nipple of quick access
Outer wall, between the end of multiple second sealing-plug 2022B separately, and the distance being spaced is all higher than outside the hollow pipe nipple of quick access and is arranged
Box cupling outer diameter.When the second sealing mechanism 2B is in the second working condition, pressure conversion channel 301B corresponds to multiple the
The hollow pipe nipple of quick access, the end of multiple first sealing-plug 1011B are equipped at the position of one pipeline 101B and second pipe 202B
Between portion separately, and the distance at interval is all higher than the outer diameter of the box cupling being arranged outside the hollow pipe nipple of quick access, multiple second sealing-plugs
The end of 2022B is fitted in the outer wall of the hollow pipe nipple of quick access.The conversion wellhead sealing device of the application embodiment, by first
It the first working conditions of sealing mechanism 1B and is switched between the second working condition of the second sealing mechanism 2B, speed may be implemented
Hollow pipe nipple is connect during tripping in process is with rising, the pressure conversion to well head and sealing.Specifically, tripping in quick access is hollow
When pipe nipple, the first sealing mechanism 1B is closed, the second sealing mechanism 2B is opened, by the hollow pipe nipple tripping in of quick access to pressure conversion ontology
In the pressure conversion channel 301B of 3B, the lower end of the hollow pipe nipple of quick access is located at the top of second pipe 202B at this time.Turn off
One sealing mechanism 1B (even if the end of multiple first sealing-plug 1011B is fitted in the outer wall of the hollow pipe nipple of quick access), under opening
Second sealing mechanism 2B (even if between the end of multiple second sealing-plug 2022B the distance that is spaced be more than the hollow pipe nipple of quick access
Outer diameter), complete a hollow pipe nipple of quick access tripping in, repeat the above process by the hollow pipe nipple of root tripping in quick access.Upper speed-raising connects
When hollow pipe nipple, whether observation well head has overflow.If without overflow, it is close can directly to open the second sealing mechanism 2B and first
Sealing mechanism 1B is (even if it is equal to obtain the distance being spaced between multiple first sealing-plug 1011B and the end of multiple second sealing-plug 2022B
More than the outer diameter of the hollow pipe nipple of quick access), it is continuous to act the hollow pipe nipple of quick access in well.If there is well head has overflow, then first is closed
Sealing mechanism 1B opens lower second sealing mechanism 2B, the hollow pipe nipple of quick access is risen to the pressure conversion of pressure conversion ontology 3B
In the 301B of channel, the second sealing mechanism 2B is turned off, opens the first sealing mechanism 1B, it is ensured that acts speed by root in the state of sealing
Connect hollow pipe nipple.In the present embodiment, the first sealing-plug 1011B and the second sealing-plug 2022B can be by flexibilities such as rubber
Material is made, to when the first sealing mechanism 1B or the second sealing mechanism 2B is closed, the first sealing-plug 1011B and
Second sealing-plug 2022B can preferably be fitted in the outer wall of the hollow pipe nipple of quick access, realize the sealing of pressure conversion channel 301B.
As shown in Figure 1, the pressure conversion ontology 3B with pressure conversion channel 301B is substantially tubular, the side close to top and bottom
Wall can be respectively set there are two opening group, and each opening group has a multiple openings circumferentially arranged, multiple first tube bodies and
Multiple second openings are separately positioned in the opening that two opening groups are included, and take this to realize the company with pressure conversion channel 301B
It is logical.Further, the upper end of pressure conversion ontology 3B can be connected with top connection 4B, and top connection 4B is for connecting well head limit dress
Set 5B.The lower end of pressure conversion ontology 3 can be connected with flange 6B, and flange 6B is used for connecting interface conversion equipment.In a reality
It applies in mode, in order to realize the first sealing-plug 1011B and the second sealing-plug 2022B respectively in accordingly first pipe 101B and
Movement in two pipeline 202B, the first sealing mechanism 1B can also include the first movement being arranged in multiple first pipe 101B
Operating lever 102B, first movement operating lever 102B can be moved in accordingly first pipe 101B, the solid accordingly institute in end top
State the first sealing-plug 1011B.It is moved likewise, the second sealing mechanism 2B further includes second be arranged in multiple second pipe 202B
Dynamic operating lever 201B, the second moving operation bar 201B can be moved in accordingly second pipe 202B, and end top is solid accordingly
Second sealing-plug 2022B.In the present embodiment, the movement of first movement operating lever 102B and the second moving operation bar 201B can
To drive the movement of the first sealing-plug 1011B and the second sealing-plug 2022B respectively.Specifically, multiple first pipe 101B and more
First end cover 7B and second end cover 8B, first movement operating lever 102B and are respectively arranged in the open ends a second pipe 202B
Two moving operation bar 201B distinguish threaded engagement in first end cover 7B and second end cover 8B.In this way, being operated by first movement
The screw-thread fit of the screw-thread fit of bar 102B and first end cover 7B and the second moving operation bar 201B and second end cover 8B, makes
First movement operating lever 102B and the second moving operation bar 201B rotary motion be separately converted to the first sealing-plug 1011B and
Axial movements of the second sealing-plug 2022B in first pipe 101B and second pipe 202B.In the present embodiment, first end cover
7B and second end cover 8B substantially can be in the housing shape with through-hole, and inner wall is provided with internal thread, first movement operating lever 102B
The outer wall of second moving operation bar 201B is provided with compatible external screw thread, takes this to realize threaded connection.Also, in order to
The position of one moving operation bar 102B and the second moving operation bar 201B are limited, and first movement operating lever 102B and second is moved
The outer wall of dynamic operating lever 201B can be arranged with the first nut 9B and the second nut 10B, the first nut 9B and the second nut respectively
10B pushes up the open end of solid first pipe 101B and second pipe 202B respectively.It, can be for the ease of the operation of construction personnel
The end of one moving operation bar 102B and the second moving operation bar 201B are arranged handle (not shown), and construction personnel passes through to handle
Apply the power that rotates in a circumferential direction, first movement operating lever 102B and the second moving operation bar 201B can be made to rotate, Jin Ershi
The axial feed motion of existing first sealing-plug 1011B or the second sealing-plug 2022B.Further, in order to realize the biography of movement
It passs, the first sealing mechanism 1B can also include that the first sliding sleeve that simultaneously energy is movable within is arranged in multiple first pipe 101B
The inner wall of 103B, multiple first sliding sleeve 103B are inwardly protruding to form the first limited step 1031B, the first limited step 1031B tools
There is the first outer end face towards the first inner face of the first sealing-plug 1011B and towards first movement operating lever 102B, first is close
The top of blocking 1011B is solid on the first inner face, and first movement operating lever 102B is connected with the first outer end face.Likewise, the
Two sealing mechanism 2B can also include be arranged in multiple second pipe 202B and can second sliding sleeve 203B movable within, it is more
The inner wall of a second sliding sleeve 203B is inwardly protruding to form the second limited step 2032B, and the second limited step 2032B has towards the
The second outer end face of the second moving operation bar 201B of the second inner face and direction of two sealing-plug 2022B, the second sealing-plug 2022B
Top it is solid on the second inner face, the second moving operation bar 201B is connected with the second outer end face.In the present embodiment, first
Sliding sleeve 103B and the second sliding sleeve 203B substantially can be in the tubular of both ends open, inner wall the first limited step of inwardly protruding formation
1031B and the second limited step 2032B, inner wall of the outer wall respectively with first pipe 101B and second pipe 202B fit.
It, can be by first movement operating lever 102B and the second moving operation respectively by the way that the first sliding sleeve 103B and the second sliding sleeve 203B is arranged
The swivel feeding movement of bar 201B passes to accordingly the first sealing-plug 1011B and the second sealing-plug 2022B, and first is realized with this
The axial movement of sealing-plug 1011B and the second sealing-plug 2022B.Further, the first sliding sleeve 103B and the second sliding sleeve 203B with
It is also provided with intermediate connector between first movement operating lever 102B and the second moving operation bar 201B.Specifically, multiple
First movement operating lever 102B and multiple second moving operation bar 201B is located at accordingly first pipe 101B and
Radially the first hook of outward bending formation connects portion 1021B respectively and second hook connects portion 2021B for end in two pipeline 202B.It is multiple
The first connector 104B and the second connector 204B are respectively arranged in first pipe 101B and multiple second pipe 202B, it is multiple
It pushes up respectively admittedly on the first outer end face and the second outer end face, separately one end of first connector 104B and multiple second connector 204B
One end is bent to form the first auxiliary section 1041B and the second auxiliary section 2042B, the first auxiliary section 1041B and second radially inward
Auxiliary section 2042B connects portion 1021B with the first hook respectively and second hook connects portion's 2021B phases and mounts.In the present embodiment, first connects
Fitting 104B and the second connector 204B are substantially cylindrical in shape, can by way of screw thread respectively with the first sliding sleeve 103B and
Second sliding sleeve 203B is connected, and it is solid on the first outer end face and the second outer end face so that its end is pushed up respectively, takes this to move first
The swivel feeding movement of dynamic operating lever 102B and the second moving operation bar 201B passes to accordingly the first sliding sleeve 103B and second
Sliding sleeve 203B, and then push the first sealing-plug 1011B and the second sealing-plug 2022B movements.
In this application, anti-channeling limiter 4 is used to ensure the firm of the hollow pipe nipple of quick access 8, when preventing the steam injection into well
The hollow pipe nipple 8 of quick access borehole pressure effect under on alter.
S103：By tubing string by the position that is hampered in the crane tripping in pit shaft in Construction traffic, the tubing string is from bottom to top
Including：Radially with the hollow pipe nipple of the nozzle 10 of spray-hole, multiple quick access 8.
The area that wellsite may be not enough when due to construction stands up derrick, in this application, when construction in well site
Need to only meet can accommodate a crane, you can completion entirely establishes bailing well channel, need not stand up derrick, to big
Width reduces the space of equipment needed for entire establish during bailing well channel, overcomes the condition in the narrow limited well site of area
Limitation.
In this step, tubing string is sling by crane and then passes through the anti-channeling limiter 4 installed on well mouth of oil well, conversion
In wellhead sealing device 6,7 tripping in pit shaft of interface switching device 6, lubricator and blowout preventer.The tubing string of tripping in is just started under
May include on and：Radially with the hollow pipe nipple of the nozzle 10 of spray-hole, a small amount of quick access 8.In order to when injecting steam
It prevents steam from flowing backwards, further includes check valve 9 in the tubing string, the check valve 9 is connected to the nozzle 10 and the quick access
Between hollow pipe nipple 8, the check valve 9 can be connected from the hollow pipe nipple of the quick access 8 to the nozzle 10.In a kind of embodiment
In, the nozzle 10 may include outer housing, and cavity is formed in the outer housing, and the spray-hole is radially located at institute
It states on outer housing, the spray-hole is connected with the cavity, also has trepanning in axial direction on the outer housing, described
Trepanning is connected with the cavity.
Then, in crane on one side by most of tubing string tripping in pit shaft after, then in the upper end of tubing string not connection breaking quick access
Hollow pipe nipple 8 is then further continued for, by crane running string, so constantly recycling, until tubing string passes through crane tripping in pit shaft
In be hampered position.When by tubing string by the crane tripping in pit shaft in Construction traffic in be hampered position when, it is pre- to may lift up tubing string
If distance, which can be in 1m or so, in this way, can be in order to which steam can when injection steam in tubing string in subsequent step
It is smoothly sprayed from nozzle 10.
S104：The upper end of the hollow pipe nipple of the quick access 8 is connected to the superconduction steam coach 2 in Construction traffic by hose 3,
Steam flush is injected into tubing string by the superconduction steam coach 2 and reach predetermined time period, rinse the waste liquid of formation from well head
Sleeve valve backflows into ground water-tank lorry 12.
In this step, superconduction steam coach 2 and the transport with driving steam unit for assisting superconduction steam coach 2
Vehicle 1 rests in the position far from well mouth of oil well, then the upper end connecting bend of the hollow pipe nipple of the quick access 8 connects on elbow
Gate valve is connect, then connection flexible pipe 3 waits for that manifold of ground pressure testing is qualified to be connected to the superconduction steam coach 2 in Construction traffic on gate valve
Afterwards, by assisting the transport vehicle 1 with driving steam unit of superconduction steam coach 2 that will be up to 120 degree of steaming in superconduction steam coach 2
Vapour is inputted into tubing string, and the predetermined time period for injecting steam flush can be 30 minutes or so.Spray of the steam from tubing string lower end
Directive shaft sleeve tube wall is sprayed at the radial direction and/or axial direction of mouth 10, the steam that radial injection hole sprays is to casing wall
Upper viscous crude oil viscosity reduction washes away, and the steam that axial aperture sprays is to certain depth viscous crude oil cap viscosity reduction, to heat shaft sleeve
Sticky crude oil and fouling on tube wall so that viscous crude oil all becomes feasible to flowing from the solid-state that can not be flowed in casing
Liquid.Cycling hot field is established in well using high-temperature steam, to carry out viscosity reduction, the original after viscosity reduction success to viscous crude oil in well
Oil and fouling are backflowed upwards with the condensed flow of steam to wellhead casing pipe valve, then flow to water pot by high-pressure fire hose 11
Recycling is collected in vehicle 12.
S105：Suspend the superconduction steam coach 2 and inject steam into tubing string, continue by the hollow pipe nipple of root tripping in quick access 8 to
The tubing string is hampered position again, then injects steam flush into tubing string by the superconduction steam coach 2 and reach predetermined time period,
The waste liquid artesian well muzzle tube valve formed is rinsed to backflow into ground water-tank lorry 12.
In this step, after injection steam flush reaches predetermined time period, the position that is hampered of upper end first in pit shaft
The sticky crude oil and fouling at place has cleaned out, and next proceeds through crane by the hollow pipe nipple 8 of root tripping in quick access so that pipe
Column is constantly lengthened and extended downwardly into the tubing string to be hampered position again, then injects steaming into tubing string by the superconduction steam coach 2
Vapour flushing reaches predetermined time period, and the waste liquid artesian well muzzle tube valve for rinsing formation backflows into ground water-tank lorry 12.
S106：Steam is so cycled through to replace out viscous crude oil flushing in well, until nozzle 10 to perforated interval top circle or
Set becomes position, and artesian well muzzle tube valve backflows until the waste liquid on ground becomes water.
In this step, by recycling above-mentioned steps S105 to the hollow pipe nipple 8 of continuous tripping in quick access and successively by pit shaft
The viscous crude oil of different location and fouling are cleared up on middle sleeve wall, are eventually until the nozzle 10 of running string to perforated interval top
Boundary or set become position, at this point, since the position between oil well perforation Duan Ding circle and lower bound is the original that oil well casing is connected to oil reservoir
Oil flow passage, and it is then that oil well casing is squeezed and a kind of phenomenon of undergauge by strata pressure to cover change, accordingly, it is considered to be adopted to bailing
Oil is the process characteristic for realizing oil recovery with the interference fit of oil well casing wall by involving swab pump seal, and perforated interval and set become and can cause
Casing deformation, involving swab pump can not go down, so, inject the tubing string of steam drain bosom can only arrive this cannot again under
Enter.To by way of tubing string steam injection by reducing crude oil viscosity sticky in pit shaft after as far as possible all discharge, to avoid dropping
Crude oil after viscous can solidify again, to block involving swab pump.
S107：Act the tubing string to establish bailing well channel.
In this step, viscous crude oil and fouling are clear on the side wall for the casing section that involving swab pump may pass through in pit shaft
Reason, rinse formation waste liquid artesian well muzzle tube valve backflow into ground water-tank lorry 12 after, involving swab that casing in pit shaft is formed
Well channel is in unobstructed state, is at this time slowly played out tubing string by crane, while removing the quick access of upper end in tubing string successively
Hollow pipe nipple 8 finally goes out entire tubing string from well mouth of oil well, then, just smoothly establishes bailing well channel.At this point, can
Driveing crane from well site, the dredging vehicle with lifting function is reached into well site, due to pit shaft middle sleeve inner wall smooth, dredging vehicle
Swab is transferred in the casing in oil well by steel wire rope, it is certain when being advanced under swab in oil well below liquid level
It is above carried after depth, the fluid column (crude oil) under this depth is just promoted and arrives well head by swab, which is discharged from well head
It enters in oil truck and then can transport.
The method for establishing bailing well channel in the application can solve viscous crude involving swab and reproduce bottleneck problem, reach safety,
Fast and effectively establish involving swab channel.Especially in construction in the limited space in well site, this establishes the method in bailing well channel
In only need to put a crane and remove the hollow pipe nipple 8 of quick access, and superconduction steam coach 2 then can be remote by manifold with water-tank lorry 12
Distance connection to establish circulation canal, so solve not the youthful and the elderly stop well because well site limited space can not stand up derrick can not
The problem of construction.Meanwhile it also effectively relieving well top stopped for long time with pressure by interface switching device 6, conversion wellhead sealing device 6 and unloading
Press the safe and environment-friendly hidden danger such as not clean, kill-job is unreal, well head aging easily leakage.In addition, this establishes the method in bailing well channel in list
Spent expense is at 30,000 yuan or so in well time work progress, less than the half of light maintenance operating cost under conventional well, therefore,
It is with larger cost advantage.From in April, 2014 between in December, 2016, this establishes the method in bailing well channel at the scene
It is accumulative to implement 42 wells, effectively increase 6804.24 tons of oil, 1087.32 ten thousand yuan of wound effect.
In one embodiment：Double Bei25-47Jing are that a bite length stops well, and the viscous crude oil in well condenses to form viscous crude
Cap can not continue oil salvage operation.Well-head pressure-measuring is 1MPa, and well site area can only accommodate 1 dredging vehicle, therefore conventional well
Lower light maintenance operation can not be implemented.To realize that the well involving swab reproduces, the method for establishing bailing well channel in implementation the application, so as to
Involving swab channel is established by steam injection.In work progress, by load it is that 15 tons of crane is opened to well head, and by the hollow pipe nipple of quick access
8 are transported to well site, and the high-pressure fire hose 11 using length up to tens meters connects water-tank lorry and wellhead casing pipe valve, is reached using length
Tens meters of high temperature high voltage resistant hose is connected with superconduction steam coach 2.Installed successively on well mouth of oil well blowout preventer 7, lubricator,
Interface switching device 6, conversion wellhead sealing device 6 and anti-channeling limiter 4 realize pressure by the conversion wellhead sealing device 6 of well head
Power is switched can establish sealing and circulating with the later stage so that the well can take construction with pressure.Tubing string is passed through into crane tripping in well
Be hampered position in cylinder, then injects steam flush into tubing string by the superconduction steam coach 2 and reaches predetermined time period, rinses
The waste liquid artesian well muzzle tube valve of formation backflows into ground water-tank lorry 12.Suspend the superconduction steam coach 2 to inject into tubing string
Steam continues again to be hampered position by the hollow pipe nipple 8 of root tripping in quick access to the tubing string, then by the superconduction steam coach 2 to pipe
Steam flush is injected in column and reaches predetermined time period, and the waste liquid artesian well muzzle tube valve for rinsing formation backflows to ground water-tank lorry
In 12.Steam is so cycled through to replace out viscous crude oil flushing in well to 1000 meters of underground, i.e. perforated interval top circle or set displacement
It sets, completes the cleaning to the viscosity reduction and casing wall fouling of viscous crude oil in pit shaft by the above process, it is final to act the tubing string
To effectively establish involving swab channel, and then the purpose that the well involving swab reproduces is realized, day, involving swab yield was up to 1.5 tons.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.The term " substantially by ... constitute " for describing combination should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.Multiple element, ingredient, component or step can be carried by single integrated component, ingredient, component or step
For.Alternatively, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation
Suddenly.Open "a" or "an" for describing element, ingredient, component or step do not say in order to exclude other elements, at
Point, component or step.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, the same or similar parts between the embodiments can be referred to each other.Above-described embodiment is only
Illustrate the technical concepts and features of the present invention, its object is to those skilled in the art can understand the contents of the present invention
And implement according to this, it is not intended to limit the scope of the present invention.It is all according to equivalence changes made by spirit of the invention
Or modification, it should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of method for establishing bailing well channel, which is characterized in that the method for establishing bailing well channel includes following step
Suddenly：
According to the actual conditions reasonable placement Construction traffic in well site, the water-tank lorry in the Construction traffic is passed through into high-pressure fire hose
It is connect with wellhead casing pipe valve slips, to check oil well；
Blowout preventer, lubricator, interface switching device, conversion wellhead sealing device and anti-channeling limit are installed successively on well mouth of oil well
Device；
By tubing string by the position that is hampered in the crane tripping in pit shaft in Construction traffic, the tubing string includes from bottom to top：Along diameter
There is nozzle, the hollow pipe nipple of multiple quick access of spray-hole to direction；
The upper end of the hollow pipe nipple of the quick access is connected to the superconduction steam coach in Construction traffic by hose, passes through the superconduction
Steam coach injects steam flush into tubing string and reaches predetermined time period, rinse formation waste liquid artesian well muzzle tube valve backflow to
In the water-tank lorry of ground；
Suspend the superconduction steam coach and inject steam into tubing string, continuation is met again by the hollow pipe nipple of root tripping in quick access to the tubing string
Position is hindered, then steam flush is injected into tubing string by the superconduction steam coach and reaches predetermined time period, rinses the useless of formation
Liquid artesian well muzzle tube valve backflows into ground water-tank lorry；
Steam is so cycled through to replace out viscous crude oil flushing in well, until nozzle to perforated interval top circle or set becomes position, and
Artesian well muzzle tube valve backflows until the waste liquid on ground becomes water；
Act the tubing string to establish bailing well channel.
2. the method according to claim 1 for establishing bailing well channel, which is characterized in that carrying out checking process to oil well
In, it specifically includes：Well head pressure is surveyed, is if desired bled off pressure, is opened sleeve valve and bled off pressure；Detection is discharged from sleeve valve
Gas in the content of hydrogen sulfide or other pernicious gases and carry out Supervision Measures.
3. the method according to claim 1 for establishing bailing well channel, which is characterized in that pass through in Construction traffic in tubing string
Crane tripping in pit shaft in be hampered during position, on crane one side during running string, on one side in the upper of tubing string
Hold the not hollow pipe nipple of connection breaking quick access.
4. the method according to claim 1 for establishing bailing well channel, which is characterized in that the superconduction steam coach and described
Water-tank lorry rests in the position far from well mouth of oil well.
5. the method according to claim 1 for establishing bailing well channel, which is characterized in that further include unidirectional in the tubing string
Valve, the check valve are connected between the nozzle and the hollow pipe nipple of the quick access, and the check valve can be hollow by the quick access
Pipe nipple is connected to the nozzle.
6. the method according to claim 1 for establishing bailing well channel, which is characterized in that by the upper end of the hollow pipe nipple
Connecting bend, then connects gate valve on elbow, then on gate valve connection flexible pipe to be connected to the superconduction steam in Construction traffic
Vehicle injects steam into tubing string after manifold of ground pressure testing qualification by the superconduction steam coach.
7. the method according to claim 1 for establishing bailing well channel, which is characterized in that pass through tubing string in Construction traffic
Crane tripping in pit shaft in be hampered position when upper lifting pipe post pre-determined distance.
8. the method according to claim 1 for establishing bailing well channel, which is characterized in that the interface switching device packet
It includes：
Upper crossover flange, the upper crossover flange are provided with pressure testing interface；
Lower crossover flange, the lower crossover flange are provided with opening, and connector is provided in the opening, is provided in the connector
Axially extending bore；
The sealing element made of flexible material, the upper end are fixedly connected on the lower end of the upper crossover flange；The sealing element
Middle setting central passage, the central passage are connected with the pressure testing interface and the axially extending bore；The sealing element leans on
The inside constriction of side wall at nearly middle part, to which the central passage has the upper channel section close to upper end, the lower part close to lower end
Channel section, and close middle part and the central passage section between the upper channel section and lower passage section, and it is described
The internal diameter of central passage section is less than the internal diameter of the upper channel section and the lower passage section.
9. the method according to claim 1 for establishing bailing well channel, which is characterized in that the conversion wellhead sealing device packet
It includes：
Pressure conversion ontology, the pressure conversion ontology have the pressure conversion channel worn for hollow pipe nipple；
The first sealing mechanism in the pressure conversion body outer wall is set, and first sealing mechanism includes multiple is laterally extended
First pipe, multiple first pipes are connected with the pressure conversion channel, are set respectively in multiple first pipes
It is equipped with the first sealing-plug, first sealing-plug can move in the accordingly first pipe；
It is arranged in the pressure conversion body outer wall and the second sealing mechanism below first sealing mechanism, described the
Two sealing mechanisms include multiple second pipes being laterally extended, and multiple second pipes are connected with the pressure conversion channel
It is logical, the second sealing-plug is respectively arranged in multiple second pipes, second sealing-plug can be in accordingly second pipe
It is moved in road.
10. the method according to claim 1 for establishing bailing well channel, which is characterized in that the nozzle includes outer housing,
Be formed with cavity in the outer housing, the spray-hole is radially located on the outer housing, the spray-hole with it is described
Cavity is connected, and also there is trepanning in axial direction, the trepanning to be connected with the cavity on the outer housing.
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| CN201810219419.4A CN108590582B (en) | 2018-03-16 | 2018-03-16 | Method for establishing oil-fishing well channel |
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| CN201810219419.4A CN108590582B (en) | 2018-03-16 | 2018-03-16 | Method for establishing oil-fishing well channel |
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| CN108590582B CN108590582B (en) | 2020-07-10 |
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|---|---|---|---|---|
| CN111119805A (en) * | 2020-01-03 | 2020-05-08 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Automatic oil well swabbing method, device and system |
| CN111119805B (en) * | 2020-01-03 | 2023-08-18 | 中国石油天然气集团有限公司 | Automatic pumping method, device and system for oil well |
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| CN108590582B (en) | 2020-07-10 |
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