CN109236185A - A kind of radially horizontal well drilling rig and its boring method - Google Patents
A kind of radially horizontal well drilling rig and its boring method Download PDFInfo
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- CN109236185A CN109236185A CN201810884345.6A CN201810884345A CN109236185A CN 109236185 A CN109236185 A CN 109236185A CN 201810884345 A CN201810884345 A CN 201810884345A CN 109236185 A CN109236185 A CN 109236185A
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- 238000005553 drilling Methods 0.000 title claims abstract description 194
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 239000000725 suspension Substances 0.000 claims abstract description 36
- 238000012856 packing Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000010977 unit operation Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
- E21B19/04—Hooks
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention is a kind of radially horizontal well drilling rig and its boring method, the device includes suspension feeding portion, dynamic supercharging portion, continuous drilling part and is slidingly sealed portion, the suspension feeding portion can be movably set at the well head for the Vertical Well that top seals, it is removedly connected at the top of the dynamic supercharging portion in the suspension feeding portion, the bottom connection setting in the dynamic supercharging portion has the continuous drilling part of flexible drilling function, and the dynamic supercharging portion can increase the Fluid pressure into the continuous drilling part；The continuous drilling part can slide the packing continuous drilling part upper space for creeping into radially horizontal well, the portion that is slidingly sealed.The radially horizontal well drilling rig and its boring method are by the way of discontinuous oil pipe drilling operation, avoid the problem that coild tubing unit operation is brought, apparatus structure is simple, at low cost, horizontal well construction process can be safely and efficiently completed, is conducive to horizontal well technology and is more widely used.
Description
Technical field
The present invention relates to oil and gas production technique field more particularly to a kind of diameters of discontinuous oil pipe drilling operation
To horizontal well drilling device and its boring method.
Background technique
China's unconventional energy resource (shale gas, coal bed gas, underground heat etc.) is abundant, Unconventional gas due to its Accumulation Mechanism with
Conventional gas and oil is different, therefore conventional mining method is not applicable；The exploitation of geothermal energy resources is also studied in progress continuous, but as waterpower
The technological means such as pressure break are not very effectively, therefore, to need a kind of high-efficiency and economic technological means exploitation.
With the continuous development for boring completion technique, the complicated well type based on horizontal well is gradually developed, and is that China is non-
The exploitation of conventional energy resource provides theoretical basis.The success of U.S.'s shale gas revolution be also horizontal well technology break through brought by,
A possibility that demonstrating horizontal wells Unconventional gas, it was demonstrated that it is now recognized that U-typed well be mining geothermal energy source compared with
Excellent well type, two mouthfuls of one notes one of well adopt the harvest efficiency that can effectively improve underground heat.70% from old in China's oil-gas mining at present
Well, conventional oil-gas reservoir exploitation is no longer major part, improves the recovery ratio of old well, and exploitation Margin reservoir, thin oil reservoir are put on
Schedule.Radially horizontal well can have larger achievement in terms of unconventional energy resource and old raising, once breaking through can be big
The process of big propulsion China's energy development.
Radially horizontal well, which refers to, to be completed in the ultra-short radius of 0.3m from vertically turning to horizontal, and key technical index is
The length of horizontal segment drilling, has determined at present it is possible that using coiled tubing as well drilling pipe column, using high-pressure hose as
Level is sent into tubing string.But it can only be carried out using coild tubing unit when at present using coiled tubing drilling.Continuous oil pipe operation
Machine operation is at high cost, and transport is relatively inconvenient, is easy to appear that roller flies to turn out of control, injection head lower part is continuously oily when operation at the scene
The problems such as pipe fractures, injection head skids；When using coild tubing unit operation, the necessary long enough of coiled tubing, coiled tubing
Length is generally km rank, always makes have one section of spiral section more than ground, increases the pressure consumption in entire cyclic process；In addition,
Coiled tubing pressure-bearing must not be higher than 70MPa, not only limit the depth of setting of coiled tubing, also limit it in high pressure formation
Drilling.In China, coiled tubing major limitation is in the simple application of straight pipe, and on the one hand domestic Oil Field mostly is equipped with uneven
Entirely, technique is imperfect, and not in time, coiled tubing technology knowledge is popularized not in oil field for accessory supply in use, construction
Personnel are unfamiliar with the proper use of method of continuous tubing drill industry machine；On the other hand the year workload of domestic existing continuous oil pipe device
Its work capacity is not achieved.Influence in view of routine work and continuous oil pipe operation to yield, so that continuous oil pipe operation
It is costly, cannot get the favor in each oil field.The above serious coiled tubing that limits is as the wide of horizontal well drilling tubing string
General application.
The needs of to meet unconventional energy resource exploitation and the redevelopment of old well, the shortcomings that overcoming the prior art, the present inventor
According to the experience for being engaged in horizontal well and coiled tubing research and development for many years, a kind of radially horizontal well drilling rig and its drilling well side are proposed
Method.
Summary of the invention
The purpose of the present invention is to provide a kind of radially horizontal well drilling rig and its boring methods, overcome in the prior art
The problems such as existing coild tubing unit operating cost is high, coiled tubing length is big and pressure-bearing is limited, which bores
Well device and its boring method avoid coild tubing unit operation bring from asking by the way of discontinuous oil pipe drilling operation
Topic, apparatus structure is simple, at low cost, can safely and efficiently complete horizontal well construction process, be conducive to horizontal well technology and obtain more
It is widely applied.
The object of the present invention is achieved like this, a kind of radially horizontal well drilling rig, including suspension feeding portion, power increase
Splenium, continuous drilling part and it is slidingly sealed portion, the suspension feeding portion can movably be set to the well for the Vertical Well that top seals
At mouthful, it is removedly connected at the top of the dynamic supercharging portion in the suspension feeding portion, the bottom in the dynamic supercharging portion
Connection setting has the continuous drilling part of flexible drilling function, and the dynamic supercharging portion can increase into the continuous drilling
Fluid pressure in portion；For creeping into radially horizontal well, the portion that is slidingly sealed can be slided described in packing for the continuous drilling part
Continuous drilling part upper space.
In a preferred embodiment of the present invention, the portion of being slidingly sealed includes the perforation being capable of fixing in Vertical Well
Heavy wall tubing, sealing slides against equipped with rubber plug sliding block in the heavy wall tubing, and the rubber plug sliding block is equipped with the stream of perforation
Body via hole, the top-hung of the rubber plug sliding block is set in the suspension feeding portion and the bottom connection setting institute of the rubber plug sliding block
State dynamic supercharging portion.
In a preferred embodiment of the present invention, the continuous drilling part includes that can seal connection to be set to the power
The bottom opening connection setting of the high-pressure hose of the bottom of plenum, the high-pressure hose can spray high-pressure fluid drilling radial water
The high pressure nozzle of horizontal well.
In a preferred embodiment of the present invention, the continuous drilling part further includes that can be set to the dynamic supercharging portion
Bottom screw pump, the bottom of the screw pump extend downwardly setting have flexible shaft flexible, the bottom of the flexible shaft
Being arranged can be with the drill bit of the flexible shaft rotary drilling.
In a preferred embodiment of the present invention, the bottom setting of the heavy wall tubing can be opposite with oil inlet layer to be drilled
Guide part, the continuous drilling part can constitute radially horizontal well by horizontal drilling oil inlet layer to be drilled after guide part drilling.
In a preferred embodiment of the present invention, the upper inside wall setting diameter of the heavy wall tubing is in subtract from top to bottom
Contract the guiding conical surface being arranged, the sheath that rubber plug sliding block described in the inner wall lower setting convex and energy backstop of the heavy wall tubing glides
Part.
In a preferred embodiment of the present invention, the suspension feeding portion includes mobile chassis, on the chassis
Elevator is set, the hook portion for being equipped with and extending downwardly and capable of moving up and down is twisted on the elevator, the bottom of the hook portion connects
Wirerope is connect, the bottom of the wirerope connects the rubber plug sliding block；Winch, the winch are removedly set on the chassis
The storage wirerope is set for twisting.
In a preferred embodiment of the present invention, the hook portion includes that can twist the hinge being set on the elevator,
Hook is arranged in the bottom of the hinge, described to link up with hanging hanging rod of rising to the bait, and the hanger bar sealing slides through the well of Vertical Well
The bottom of connecting steel wire ropes after mouthful, the wirerope connects the rubber plug sliding block.
The purpose of the present invention can also be achieved, a kind of boring method, including,
Step a, into Vertical Well, tripping in is slidingly sealed portion, using suspension feeding portion by continuous drilling part, dynamic supercharging portion
Lifting is sent into and is slidingly sealed in portion, sealing wellhead；
Step b, pressurized fluid is injected to being slidingly sealed in portion, continuous drilling part downlink is until to reach oil inlet layer to be drilled specified
Drilling position；
Step c, start the drilling for completing radially horizontal well in continuous drilling part；
Step d, after drilling, well head is opened, hangs and lifts power plenum out and continuous drilling part in feeding portion, and
The portion of being slidingly sealed is risen, dynamic supercharging portion, continuous drilling part and the portion of being slidingly sealed are assemblied in suspension feeding portion, it is mobile outstanding
It hangs feeding portion and leaves well head.
In a preferred embodiment of the present invention, in step a, by heavy wall tubing tripping in Vertical Well, heavy wall tubing
Top is fixedly connected by conventional oil pipe with well head, the top-hung of rubber plug sliding block is set in suspension feeding portion, by dynamic supercharging
Portion is connected to the bottom for being set to rubber plug sliding block, and continuous drilling part is connected to the bottom in dynamic supercharging portion, utilizes suspension feeding portion
By continuous drilling part, dynamic supercharging portion and rubber plug sliding block tripping in heavy wall tubing, rubber plug sliding block is supported along the inner wall sealing of heavy wall tubing
By sliding.
From the above mentioned, radially horizontal well drilling rig and its boring method provided by the invention have the following beneficial effects:
(1) in radially horizontal well drilling rig and its boring method of the invention, using discontinuous oil pipe drilling operation
Mode is not required to avoid coild tubing unit operation bring construction inconvenience, coiled tubing length using coild tubing unit
The problems such as deformation of larger, coiled tubing, injection head skid, in radially horizontal well drilling rig of the invention, continuous drilling part energy
It is lower that the small diameter borehole with certain extending length is drilled out in oil reservoir, do not involve when opening the exploitation of old well or involves degree
Oil gas region realizes radially horizontal well drilling, establishes new oil flow channel；
(2) in radially horizontal well drilling rig of the invention, coiled tubing length changes according to construction requirement, length compared with
It is short, generally within 100 meters, and it is unrelated with well depth, facilitate construction application；Dynamic supercharging portion is to the stream entered in continuous drilling part
Body pressurization, guarantees the drilling pressure of continuous drilling part；Mobile suspension feeding portion makes radially horizontal well drilling well of the invention
Device convenient transportation；
(3) high-pressure hose or flexible bearing pressure energy in radially horizontal well drilling rig of the invention, in continuous drilling part
Power and flexibility are stronger, reduce to construct because of pressure-bearing problem bring and limit to；
(4) radially horizontal well drilling rig structure of the invention is simple, at low cost, and replacement is convenient, can be safe and efficient complete
At horizontal well construction process, the boring method using radially horizontal well drilling rig is simple and easy, is conducive to horizontal well technology and obtains
To wider application.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1: schematic diagram when casing sidetracking is carried out for radially horizontal well drilling rig of the invention.
Fig. 2: the schematic diagram of radially horizontal well is crept into after casing sidetracking for radially horizontal well drilling rig of the invention.
In figure:
100, radially horizontal well drilling rig；
1, feeding portion is hung；
10, chassis；11, winch；12, wirerope；131, hinge；132, it links up with；133, hanger bar；14, elevator；
2, dynamic supercharging portion；
3, continuous drilling part；
31, high-pressure hose；32, high pressure nozzle；33, screw pump；34, flexible shaft；35, drill bit；36, guide part；
4, it is slidingly sealed portion；
41, heavy wall tubing；411, it is oriented to the conical surface；42, rubber plug sliding block；43, sheath part；
9, Vertical Well；
90, oil inlet layer to be drilled；91, well mouth sealing device；92, fluid-infusing port.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment.
As shown in Figure 1 and Figure 2, the present invention provides a kind of radially horizontal well drilling rig 100, including hangs feeding portion 1, moves
Power plenum 2, continuous drilling part 3 and it is slidingly sealed portion 4, suspension feeding portion 1 can movably be set to the Vertical Well 9 that top seals
At the well head of (can be the old well for carrying out oil-gas mining), the top in dynamic supercharging portion 2 is removedly connected to be sent into suspension
In portion 1, the bottom connection setting in dynamic supercharging portion 2 has the continuous drilling part 3 of flexible drilling function, and dynamic supercharging portion 2 can increase
The Fluid pressure in continuous drilling part 3 is added, in the present embodiment, dynamic supercharging portion 2 is underground booster (existing skill
Art)；For creeping into radially horizontal well, continuous 3 upper space of drilling part of packing can be slided by being slidingly sealed portion 4 for continuous drilling part 3.
In radially horizontal well drilling rig of the invention, by the way of discontinuous oil pipe drilling operation, it is not required to using company
Continuous oil pipe operating machine, avoiding coild tubing unit operation bring from constructing, inconvenient, coiled tubing length is larger, coiled tubing becomes
The problems such as shape, injection head skid, in radially horizontal well drilling rig of the invention, continuous drilling part 3 can drill out tool in oil reservoir
There is the small diameter borehole of certain extending length, does not involve or involve the lower oil gas region of degree when opening the exploitation of old well, realize
Radially horizontal well drilling, establishes new oil flow channel；In radially horizontal well drilling rig of the invention, coiled tubing length according to
Construction requirement and change, length is shorter, generally within 100 meters, and unrelated with well depth, facilitates construction application；Dynamic supercharging portion
To the fluid pressurized entered in continuous drilling part, guarantee the drilling pressure of continuous drilling part；Mobile suspension feeding portion makes
Radially horizontal well drilling rig convenient transportation of the invention；Radially horizontal well drilling rig structure of the invention is simple, at low cost,
Replacement is convenient, can safely and efficiently complete horizontal well construction process, be conducive to horizontal well technology and be more widely used.
Further, as shown in Figure 1 and Figure 2, it is slidingly sealed the thickening oil that portion 4 includes the perforation being capable of fixing in Vertical Well 9
Pipe 41, the top of heavy wall tubing 41 can be fixedly connected with realization with well head by conventional oil pipe and fixed, the outer diameter of heavy wall tubing
Identical as the outer diameter of conventional oil pipe, the internal diameter of heavy wall tubing is less than the internal diameter of conventional oil pipe, therefore its wall thickness
Slightly larger than conventional oil pipe, sealing is slid against equipped with rubber plug sliding block 42 in heavy wall tubing 41, to meet the smooth of rubber plug sliding block 42
Sliding, the inner wall smooth of heavy wall tubing 41；Rubber plug sliding block 42 is equipped with the fluid via hole of perforation, and the top of rubber plug sliding block 42 is hung
In in the suspension feeding portion 1 and bottom connection setting dynamic supercharging portion 2 of rubber plug sliding block 42, the bottom in dynamic supercharging portion 2, which is connected to, to be set
Set continuous drilling part 3.
Radially horizontal well drilling rig 100 of the invention is used to not need the radially horizontal well drilling condition of casing sidetracking
When, continuous drilling part 3 does not need to carry out casing sidetracking (Open-Hole Section or the casing well section for having completed windowing), as shown in Fig. 2,
Continuous drilling part 3 include can seal connection be set to dynamic supercharging portion 2 bottom high-pressure hose 31 (its pressure resistance range for 80~
100MPa), the bottom opening connection setting of high-pressure hose 31 can spray the high pressure nozzle 32 of high-pressure fluid drilling radially horizontal well.
High-pressure hose 31 and high pressure nozzle 32 make full use of coiled tubing to spray drilling technology, due to the feeding energy of high pressure nozzle 32 itself
Power, the high-pressure fluid that high pressure nozzle 32 sprays can provide the minor diameter horizontal well of certain extending length by jet drilling in oil reservoir
Eye can drill out multiple small diameter boreholes by repeatedly lifting from the top and puting down, and increase drainage area, not involve when opening the exploitation of old well
Or involve the lower oil gas region of degree, it realizes radially horizontal well drilling, establishes new oil flow channel.What high pressure nozzle 32 sprayed
High-pressure fluid, which can also creep into previous level wellbore, to be deepened, and carries out drilling extension to borehole depth.31 pressure-bearing energy of high-pressure hose
Power and flexibility are stronger, can complete to reduce from vertically turning to horizontal because pressure-bearing problem bring is applied in ultra-short radius
Work limitation.
As shown in Figure 1, radially horizontal well drilling rig 100 of the invention is used to need to carry out the radial level of casing sidetracking
When well drilling condition, continuous drilling part 3 further includes the screw pump 33 that can be set to the bottom in dynamic supercharging portion 2, screw pump 33
Bottom, which extends downwardly setting, has flexible shaft 34 flexible, and the bottom setting of flexible shaft 34 can be with the brill of 34 rotary drilling of flexible shaft
First 35.Flexible shaft 34 has flexibility, can complete in ultra-short radius from vertically turning to horizontal, to Vertical Well and horizontal well it
Between angle turning radius it is adaptable.
Further, as shown in Figure 1 and Figure 2, the guide part that the bottom setting of heavy wall tubing 41 can be opposite with oil inlet layer to be drilled
36, continuous drilling part 3 can constitute radially horizontal well by horizontal drilling oil inlet layer to be drilled after the drilling of guide part 36.
It needs to carry out in the radially horizontal well drilling condition of casing sidetracking, as shown in Figure 1, by screw pump 33, flexible shaft 34
It is connected to the bottom G.I.H in dynamic supercharging portion 2 with drill bit 35, injects band in the heavy wall tubing 41 into Vertical Well from ground
Fluid is pressed, pressurized fluid pressure increase behind dynamic supercharging portion 2 constitutes high-pressure fluid, and high-pressure fluid drives screw pump 33 (existing
Technology) screw rod rotation so that screw pump 33 drive flexible shaft 34 rotate, flexible shaft 34 drive drill bit 35 be rotated into
Guide part 36 then starts casing sidetracking drilling well, and 35 drilling casing wall of drill bit realizes that windowing requires, and after casing sidetracking, stops note
Enter pressurized fluid, continuous drilling part 3, dynamic supercharging portion 2 and rubber plug sliding block 42 are proposed well head by suspension feeding portion 1, by screw pump
33, it is removed in 35 ultromotivity plenum 2 of flexible shaft 34 and drill bit, high-pressure hose 31 and high pressure nozzle 32 is changed to, such as Fig. 2 institute
Show, it is high using suspension feeding portion 1 by rubber plug sliding block 42, dynamic supercharging portion 2 and high-pressure hose 31 and 32 G.I.H of high pressure nozzle
Nozzle 32 is pressed to reach at casing sidetracking through guide part 36, high pressure nozzle 32 is sprayed along casing sidetracking to creep into, and avoids continuous drilling part 3
In the rambling injection in underground.
From the above mentioned, continuous drilling part 3 can be required according to practice of construction, and high-pressure hose 31 and high pressure is used alone in selection
The injection drilling of nozzle 32 can also be that screw pump 33, flexible shaft 34 and the windowing of drill bit 35 combine high-pressure hose 31 and high pressure nozzle
32 injection drillings, flexibility ratio is high, applied widely.
Further, as shown in Figure 1 and Figure 2, the upper inside wall setting diameter of heavy wall tubing 41 is in decrement setting from top to bottom
It is oriented to the conical surface 411, the sheath part 43 that the inner wall lower setting convex and energy backstop rubber plug sliding block 42 of heavy wall tubing 41 glide.
Being slidingly sealed portion 4 includes heavy wall tubing 41 and rubber plug sliding block 42, to realize the drilling process of radially horizontal well
Annular space sealing, heavy wall tubing 41 are constituted through special facture, and wall thickness is larger, the guiding conical surface of the rubber plug sliding block 42 Jing Guo transition
Can be placed in the middle after 411 slide into is oriented to 411 lower section of the conical surface, and rubber plug sliding block 42 is made of the high-strength rubber containing support construction,
With a segment length, can effectively seal rubber plug sliding block 42 and heavy wall tubing 41 inner wall, and rubber plug sliding block 42 is made in Fluid pressure
Can be slided downward or upward along the inner wall of heavy wall tubing 41 with lower, thus with dynamic supercharging portion 2 and continuous drilling part 3 upwards or
It moves down.Sheath part 43 can continue to glide after 42 arrival stroke least significant end of backstop rubber plug sliding block, realize downlink limit function, avoid
Rubber plug sliding block 42, dynamic supercharging portion 2 and continuous 3 transition of drilling part are glided, and device is caused to damage.
Further, as shown in Figure 1 and Figure 2, suspension feeding portion 1 includes mobile chassis 10, and elevator is arranged on chassis 10
14, elevator 14 is equipped with the hook portion that extends downwardly and can move up and down, the bottom connecting steel wire ropes 12 of hook portion, wirerope
12 bottom connects rubber plug sliding block 42.In the present embodiment, hook portion includes that can twist the hinge 131 being set on elevator 14,
The bottom setting hook 132 of hinge 131, hook 132 is risen to the bait hanging hanging rod 133, and the sealing of hanger bar 133 slides through Vertical Well
Connecting steel wire ropes 12 after well head.Winch 11 is removedly set on chassis 10, and winch 11 sets storage wirerope 12 for twisting.
Further, radially horizontal well drilling rig 100 includes control unit, and control unit includes that data acquisition unit and control are aobvious
Show that unit, data acquisition unit include the pressure sensor being set on wirerope 12, pressure sensor energy real-time monitoring steel wire
The pulling force data is simultaneously transferred to control display unit by pulling force suffered by rope 12, and data acquisition unit can also include the company of being set to
Position sensor on continuous drilling part 3, the depth location of the continuous drilling part 3 of position sensor energy real-time monitoring simultaneously pass the data
It is defeated by control display unit, data acquisition unit can also include the velocity sensor being set on rubber plug sliding block 42, and speed passes
The feed rate of sensor energy real-time monitoring rubber plug sliding block 42 simultaneously transmits the data to control display unit, continuous drilling part 3
The feed rate of lowered position and rubber plug sliding block 42 can also be calculated by the decentralization length of wirerope 12 and time；
Control display unit can receive the data that data acquisition unit transmission comes and (be controlled aobvious according to the control that each data carry out each element
Device tripping in control program, casing sidetracking control program, radially horizontal well drilling program can have been recorded by showing in unit), including control
The tripping in of continuous drilling part 3, the drilling work of casing sidetracking movement and radially horizontal well are made, further includes the liter for controlling elevator 14
Drop further includes the injection state for controlling pressurized fluid.The specific works of control unit can be adjusted according to practice of construction demand.
Using the boring method of radially horizontal well drilling rig 100 of the invention, include the following steps,
Step a, into Vertical Well, tripping in is slidingly sealed portion 4, using suspension feeding portion 1 by continuous drilling part 3, dynamic supercharging
The lifting decentralization of portion 2, which is sent into, to be slidingly sealed in portion 4, sealing wellhead；
Specifically, the top of heavy wall tubing 41 passes through conventional oil pipe and well head is solid by 41 tripping in Vertical Well of heavy wall tubing
The top-hung of rubber plug sliding block 42 is set in suspension feeding portion 1 by fixed connection, and the connection of dynamic supercharging portion 2 is set to rubber plug sliding block
Continuous drilling part 3 is connected to the bottom in dynamic supercharging portion 2 by 42 bottom, using suspension feeding portion 1 by continuous drilling part 3, dynamic
42 tripping in heavy wall tubing 41 of power plenum 2 and rubber plug sliding block, rubber plug sliding block 42 are sealed against sliding along the inner wall of heavy wall tubing 41.
In a specific embodiment of the invention, rubber plug sliding block 42 is fixedly connected on wirerope 12, passes through control unit control
The lifting of elevator 14 processed drives the lifting of wirerope 12, to drive rubber plug sliding block 42, dynamic supercharging portion 2 and continuous drilling part 3
Landing.
During downward putting device, pulling force situation suffered by pressure sensor real-time monitoring wirerope 12, accordingly judgement decentralization by
Resistance or the generation of other special circumstances.
It hangs after continuous drilling part 3, the lifting decentralization of dynamic supercharging portion 2 are sent into heavy wall tubing 41 by feeding portion 1 and uses well head
Fluid-infusing port 92 is arranged on well mouth sealing device 91 for 91 sealing wellhead of sealing device.
Step b, pressurized fluid is injected into the portion that is slidingly sealed 4, continuous 3 downlink of drilling part is until reach oil inlet layer 90 to be drilled
Specified drilling position；
Specifically, device is transferred, rubber plug sliding block 42 enters heavy wall tubing 41 and is sealed against with its inner wall, and tripping in resistance becomes
Greatly, it needs to inject pressurized fluid into heavy wall tubing 41 on ground, runner becomes smaller when pressurized fluid passes through rubber plug sliding block 42, can produce
Life builds the pressure, and pushes rubber plug sliding block 42 along the inner wall sealing slide of heavy wall tubing 41, drives dynamic supercharging portion 2 below and continuous
3 downlink of drilling part, until continuous drilling part 3 reaches the specified drilling position of oil inlet layer to be drilled.
In a specific embodiment of the invention, position sensor is implemented to monitor the position of continuous drilling part 3, facilitates monitoring
Decentralization process；Lowered position can be also monitored by the decentralization length of wirerope 12.
Step c, start the drilling for completing radially horizontal well in continuous drilling part 3；
Specifically, the drilling state of continuous drilling part 3 is determined according to practice of construction demand.
(radially horizontal well of the Vertical Well side of Open-Hole Section is crept into or to existing radial water when not needing to carry out casing sidetracking
Horizontal well is deepened), the bottom connection setting high-pressure hose 31 in dynamic supercharging portion 2, the bottom opening connection of high-pressure hose 31 is arranged high
Nozzle 32 is pressed, the pressurized fluid of ground injection passes through rubber plug sliding block 42 and dynamic supercharging portion 2, and pressure increase constitutes high-pressure fluid,
High pressure nozzle 32 sprays high-pressure fluid along the radial direction (i.e. horizontal direction) of Vertical Well, is drilled out in oil reservoir with certain extending length
Minor diameter horizontal hole can drill out multiple small diameter boreholes by repeatedly lifting from the top and puting down, increase drainage area, open old
Well does not involve or involves the lower oil gas region of degree when exploiting, realize radially horizontal well drilling, establish new oil flow channel.
When needing to carry out casing sidetracking, screw pump 33, flexible shaft 34 and drill bit 35 are connected to the bottom in dynamic supercharging portion 2
G.I.H injects pressurized fluid (bigger than the pressure of tripping in process) from ground in the heavy wall tubing 41 into Vertical Well, with pressure
Fluid pressure increase behind dynamic supercharging portion 2 constitutes high-pressure fluid, and high-pressure fluid drives the screw rod of screw pump 33 (prior art)
Rotation, screw pump 33 drive flexible shaft 34 to rotate, and flexible shaft 34 drives drill bit 35 to be rotated into guide part 36, then start to cover
Pipe windowing drilling well, 35 drilling casing wall of drill bit realize that windowing requires, and after casing sidetracking, stop injecting pressurized fluid, suspension is sent into
Continuous drilling part 3, dynamic supercharging portion 2 and rubber plug sliding block 42 are proposed well head by portion 1, by screw pump 33, flexible shaft 34 and drill bit 35
Removed in ultromotivity plenum 2, be changed to high-pressure hose 31 and high pressure nozzle 32, using suspension feeding portion 1 by rubber plug sliding block 42,
Dynamic supercharging portion 2 and high-pressure hose 31 and 32 G.I.H of high pressure nozzle, need to determine increasing according to the length of high-pressure hose 31
The time for adding pressurized fluid pressure, after pressurization, high pressure nozzle 32 starts horizontal spray after guide part 36 reaches at casing sidetracking
Drilling is penetrated, while rubber plug sliding block 42 is wanted also under the control on ground with the feeding of reasonable speed when reaching horizontal well development length
When asking, rubber plug sliding block 42 is also reached in heavy wall tubing 41 at sheath part 43, no longer tripping in, to realize that radially horizontal well is crept into, is built
Found new oil flow channel.
Step d, after drilling, well head is opened, hangs and lifts power plenum 2 out and continuous drilling part in feeding portion 1
3, and portion 4 will be slidingly sealed and risen out, by dynamic supercharging portion 2, continuous drilling part 3 and it is slidingly sealed portion 4 and is assemblied in suspension feeding portion 1
On, mobile radially horizontal well drilling rig 100 leaves well head.
Embodiment
With old street district containing casing for a specific embodiment, for old well after exploiting many years, bottom pressure is insufficient, will not occur
The problems such as overflow, well kick.In well after tripping in and fixed heavy wall tubing 41, progress casing sidetracking first, on the ground by screw pump
33, flexible shaft 34 and drill bit 35 are connected to the bottom in dynamic supercharging portion 2 and test leakproofness, and dynamic supercharging portion 2 is tightly connected
In on rubber plug sliding block 42, rubber plug sliding block 42 is hung on wirerope 12, after completing connection, by being put into well under elevator 14, under
The process entered pays attention to observing the pulling force size of wirerope 12, and the tripping in situation of monitoring device needs to pass through if tripping in is hampered at any time
Elevator 14 above proposes device tripping in again.When 42 tripping in of rubber plug sliding block to heavy wall tubing 41, tripping in resistance becomes larger, and needs on ground
Face infuses pressurized fluid into heavy wall tubing 41 by oil pipe water filling port (prior art is set at well head), and pressurized fluid passes through
Runner becomes smaller when rubber plug sliding block 42, can generate and build the pressure, and pushes rubber plug sliding block 42 to move down, drives dynamic supercharging portion below
2 and 3 downlink of continuous drilling part.
When drilling position top a distance that whole device is specified down toward oil inlet layer to be drilled, increase stream with pressure from ground
Body pressure, when pressurized fluid flows through dynamic supercharging portion 2, Fluid pressure can be substantially increased, and constitute high-pressure fluid, and high-pressure fluid drives
The screw rod of screw pump 33 (prior art) rotates, and screw pump 33 drives flexible shaft 34 to rotate, and flexible shaft 34 drives drill bit 35 to rotate
Guide part 36 is entered, casing sidetracking drilling well is then started, when 35 drilling of drill bit penetrates casing wall, rubber plug sliding block 42, which is snapped down to, to be added
It is locked at the sheath part 43 of heat-bodied oil pipe 41, after casing sidetracking, stops injection pressurized fluid, hang feeding portion 1 for continuous drilling part 3
(screw pump 33, flexible shaft 34 and drill bit 35), dynamic supercharging portion 2 and rubber plug sliding block 42 propose well head.
After casing sidetracking, start the drilling of radially horizontal well.By 35 ultromotivity of screw pump 33, flexible shaft 34 and drill bit
It is removed in plenum 2, is changed to high-pressure hose 31 and high pressure nozzle 32, as shown in Fig. 2, using suspension feeding portion 1 that rubber plug is sliding
Tripping in journey before block 42, dynamic supercharging portion 2 and high-pressure hose 31 and 32 G.I.H of high pressure nozzle, tripping in program and casing sidetracking
Sequence is identical, unlike, need to be determined according to the length of high-pressure hose 31 increase pressurized fluid pressure time, pressurization with
Afterwards, high pressure nozzle 32 starts horizontal-jet drilling after guide part 36 reaches at casing sidetracking, while rubber plug sliding block 42 is also on ground
With the feeding of reasonable speed under the control in face, when reaching horizontal well development length requirement, rubber plug sliding block 42 also reaches thickening oil
In pipe 41 at sheath part 43, no longer tripping in can be seen that pulling force is substantially zeroed at this time by wirerope pressure monitoring, indicate drilling knot
Beam.
From the above mentioned, radially horizontal well drilling rig and its boring method provided by the invention have the following beneficial effects:
(1) in radially horizontal well drilling rig and its boring method of the invention, using discontinuous oil pipe drilling operation
Mode is not required to avoid coild tubing unit operation bring construction inconvenience, coiled tubing length using coild tubing unit
The problems such as deformation of larger, coiled tubing, injection head skid, in radially horizontal well drilling rig of the invention, continuous drilling part energy
It is lower that the small diameter borehole with certain extending length is drilled out in oil reservoir, do not involve when opening the exploitation of old well or involves degree
Oil gas region realizes radially horizontal well drilling, establishes new oil flow channel；
(2) in radially horizontal well drilling rig of the invention, coiled tubing length changes according to construction requirement, length compared with
It is short, generally within 100 meters, and it is unrelated with well depth, facilitate construction application；Dynamic supercharging portion is to the stream entered in continuous drilling part
Body pressurization, guarantees the drilling pressure of continuous drilling part；Mobile suspension feeding portion makes radially horizontal well drilling well of the invention
Device convenient transportation；
(3) high-pressure hose or flexible bearing pressure energy in radially horizontal well drilling rig of the invention, in continuous drilling part
Power and flexibility are stronger, reduce to construct because of pressure-bearing problem bring and limit to；
(4) radially horizontal well drilling rig structure of the invention is simple, at low cost, can safely and efficiently complete horizontal well and apply
Work process, the boring method using radially horizontal well drilling rig is simple and easy, is conducive to horizontal well technology and obtains widely
Using.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, made equivalent changes and modifications under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.
Claims (10)
1. a kind of radially horizontal well drilling rig, which is characterized in that including hanging feeding portion, dynamic supercharging portion, continuous drilling part
With the portion that is slidingly sealed, the suspension feeding portion can be movably set at the well head for the Vertical Well that top seals, and the power increases
It is removedly connected at the top of splenium in the suspension feeding portion, the bottom connection setting in the dynamic supercharging portion has flexibility
The continuous drilling part of function is crept into, the dynamic supercharging portion can increase the Fluid pressure into the continuous drilling part；
The continuous drilling part can slide sky above the packing continuous drilling part for creeping into radially horizontal well, the portion that is slidingly sealed
Between.
2. radially horizontal well drilling rig as described in claim 1, which is characterized in that the portion of being slidingly sealed includes being capable of fixing
The heavy wall tubing of perforation in Vertical Well, the interior sealing of the heavy wall tubing slide against equipped with rubber plug sliding block, the rubber plug
Sliding block is equipped with the fluid via hole of perforation, and the top-hung of the rubber plug sliding block is set in the suspension feeding portion and the rubber plug is sliding
The dynamic supercharging portion is arranged in the bottom connection of block.
3. radially horizontal well drilling rig as claimed in claim 2, which is characterized in that the continuous drilling part includes that can seal
Connection is set to the high-pressure hose of the bottom in the dynamic supercharging portion, and the bottom opening connection setting of the high-pressure hose can spray
The high pressure nozzle of high-pressure fluid drilling radially horizontal well.
4. radially horizontal well drilling rig as claimed in claim 3, which is characterized in that the continuous drilling part further includes that can set
It is placed in the screw pump of the bottom in the dynamic supercharging portion, the bottom of the screw pump, which extends downwardly setting, has flexibility flexible
The bottom setting of axis, the flexible shaft can be with the drill bit of the flexible shaft rotary drilling.
5. radially horizontal well drilling rig as claimed in claim 4, which is characterized in that energy is arranged in the bottom of the heavy wall tubing
The guide part opposite with oil inlet layer to be drilled, horizontal drilling oil inlet layer to be drilled after the continuous drilling part can be crept into along the guide part
Constitute radially horizontal well.
6. radially horizontal well drilling rig as claimed in claim 2, which is characterized in that the upper inside wall of the heavy wall tubing is set
Setting diameter from top to bottom is in the guiding conical surface for reducing setting, and the inner wall lower of the heavy wall tubing is arranged described in convex and energy backstop
The sheath part that rubber plug sliding block glides.
7. radially horizontal well drilling rig as claimed in claim 2, which is characterized in that the suspension feeding portion includes that can move
Chassis, elevator is set on the chassis, twists the hook portion for being equipped with and extending downwardly and capable of moving up and down, institute on the elevator
The bottom connecting steel wire ropes of hook portion are stated, the bottom of the wirerope connects the rubber plug sliding block；On the chassis removedly
Winch is set, and the winch sets the storage wirerope for twisting.
8. radially horizontal well drilling rig as claimed in claim 7, which is characterized in that the hook portion includes that can twist to be set to institute
The hinge on elevator is stated, hook is arranged in the bottom of the hinge, and described to link up with hanging hanging rod of rising to the bait, the hanger bar sealing is slided
The bottom of the dynamic connecting steel wire ropes after the well head of Vertical Well, the wirerope connects the rubber plug sliding block.
9. a kind of boring method using such as the described in any item radially horizontal well drilling rigs of claim 2 to 8, feature exist
In, including,
Step a, into Vertical Well, tripping in is slidingly sealed portion, is lifted continuous drilling part, dynamic supercharging portion using suspension feeding portion
Feeding is slidingly sealed in portion, sealing wellhead；
Step b, pressurized fluid is injected to being slidingly sealed in portion, continuous drilling part downlink is until reach the specified brill of oil inlet layer to be drilled
Carry is set；
Step c, start the drilling for completing radially horizontal well in continuous drilling part；
Step d, after drilling, well head is opened, hangs and lifts power plenum out and continuous drilling part in feeding portion, and will slide
Dynamic sealing portion rises, and dynamic supercharging portion, continuous drilling part and the portion of being slidingly sealed are assemblied in suspension feeding portion, and mobile suspension is sent
Well head is left into portion.
10. boring method as claimed in claim 9, which is characterized in that in step a, by heavy wall tubing tripping in Vertical Well, add
The top of heat-bodied oil pipe is fixedly connected by conventional oil pipe with well head, and the top-hung of rubber plug sliding block is set in suspension feeding portion, will
Dynamic supercharging portion, which is connected to, is set to the bottom of rubber plug sliding block, and continuous drilling part is connected to the bottom in dynamic supercharging portion, using outstanding
Feeding portion is hung by continuous drilling part, dynamic supercharging portion and rubber plug sliding block tripping in heavy wall tubing, rubber plug sliding block is along heavy wall tubing
Wall is sealed against sliding.
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| CN201810884345.6A CN109236185B (en) | 2018-08-06 | 2018-08-06 | Radial horizontal well drilling device and drilling method thereof |
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| CN201810884345.6A CN109236185B (en) | 2018-08-06 | 2018-08-06 | Radial horizontal well drilling device and drilling method thereof |
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