CN109403861A - A kind of oil field welldrilling does not stop to infuse boring method - Google Patents
A kind of oil field welldrilling does not stop to infuse boring method Download PDFInfo
- Publication number
- CN109403861A CN109403861A CN201811229670.5A CN201811229670A CN109403861A CN 109403861 A CN109403861 A CN 109403861A CN 201811229670 A CN201811229670 A CN 201811229670A CN 109403861 A CN109403861 A CN 109403861A
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- Prior art keywords
- mud
- drilling
- well
- tank
- infuse
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
Do not stop to infuse boring method the invention discloses a kind of oil field welldrilling.This method uses the high pressure solidifying and controlling device for doing strata pressure balance and progress sediment outflow, and do not stopped to infuse drilling well using thimble tube drilling rod, high pressure solidifying and controlling device includes the solid controlling tank with pipeline connection, and solid controlling can body is equipped with mud inlet, compressed gas import, inverse inhalation type drain pipe, mud solids outlet, mud buffer board, mud baffle, mud deposition ramp, gas drain and slurry outlet.Because using no or little mud density method using high pressure solidifying and controlling device and carrying out equilibrium strata pressure, the problems such as evading a series of spray between down-hole formations, leakage, partial circulating.It is primary to creep by casing drilling mode using thimble tube drilling rod, it completes to bore well cementation.It realizes and does not stop to infuse drilling well, drillng operation can be carried out while not shutting down water injection well in oil fields, improves the production capacity and economic benefit of old filed.
Description
Technical field
The present invention relates to oil drilling method, in particular to a kind of oil field welldrilling does not stop to infuse boring method.
Background technique
Oil drilling technology has at present: 1) conventional drilling by water injection well, and Yao Tiqian two weeks stops water filling.Drilling period is wanted
Two weeks after being drilled, at least wants the water filling convalescence of two weeks, therefore the influence that conventional drilling normally produces the block is 40
It more days, also means that and reduces 1/10th or so of annual capacity, if the conventional a well that updates is taken to need to close in the area Tao Sun
Injection well 35 days or so within the scope of 450m, 21 mouthfuls of injection well are closed within the scope of 125 meters 450 meters of second class reservoir well pattern, water drive well is about
25 mouthfuls or so, especially big on exploitation influence, the influence to production capacity and economic benefit is extremely serious.2) conventional drilling well with pressure, i.e., often
Under balance pressure drilling is advised, the purpose is to protect oil-gas Layer, it is only necessary to lower band pressure pressure, so ground mud conditioning with pressure is only
It is simple Swirling flow sand-removing solid controlling, mud solid concentration is high, so that the operating pressure of back choke manifold is lower just safety
(high pressure, which can be pierced, ruins throttle valve), the long-term Operating Pressure in ground only 2MPa are unable to satisfy the 7MPa annular space band for not stopping to infuse drilling well requirement
Pressure request.
So not stopping to infuse drilling well well logging well cementation integrated technique research with pressure with application to be the current pass for solving problem above
Where key.
Summary of the invention
In view of the above-mentioned problems of the prior art, the object of the present invention is to provide a kind of simple process, securely and reliably
Do not stop to infuse drilling well (shutting down water injection well mode to dig a well) by boring method substitution conventional waterflooding well, to improve the production capacity and warp of old filed
Ji benefit.
The technical solution adopted by the present invention is that: a kind of oil field welldrilling does not stop to infuse boring method, which is characterized in that it is described not
Stop infusing drilling well to be balance drilling method with pressure, this method uses the high pressure solid controlling for doing strata pressure balance and progress sediment outflow
Device, and do not stopped to infuse drilling well using thimble tube drilling rod, high pressure solidifying and controlling device includes the solid controlling tank with pipeline connection, solid controlling
Can body is equipped with mud inlet, compressed gas import, inverse inhalation type drain pipe, mud solids outlet, mud buffer board, mud
Baffle, mud deposition ramp, gas drain and slurry outlet, the method have following steps:
One, note drilling is not stopped using thimble tube drilling rod by casing drilling mode.
Two, after opening high pressure zone, closing well builds the pressure, and after obtaining annular pressure value, then outputs a mouthful main valve, and passes in and out according to mud
The state modulator throttle valve of mouth flowmeter keeps the parameter of mud inlet and outlet flowmeter equal.
Three, high-pressure slurry enters mud inlet after coming out from well head, is buffered in mud deposition slope by mud buffer board
The ramp solid precipitation of road composition, according to the solid phase totality accumulated amount of the crept into footage of drill bit, the control of time opening inverse inhalation type sediment outflow
Valve processed, since pressure difference will be outside mud solid phase discharge solid controlling tank in tank；By the control of throttle valve, slurry liquid flow back into drilling mud
Tank.
Four, after creeping into place, the cement that estimation annular volume disposably fills annular volume is cemented the well, by the casing
Type drilling rod is in middle position in pit shaft, drill bit and drill collar is buried underground, after the cementing of ground, the bottom plug in casing is opened
The slush pump gluing plug of drilling mud jug on earth, replaces the annular space outside cement to casing, while rotary sleeve cast drilling rod, guarantees water
Mud is full of annular space.
Solid controlling tank of the present invention is respectively equipped with inverse inhalation type drain pipe, mud using one or more, each solid controlling tank
Buffer board is fixed on the solid controlling can body after mud inlet, and mud deposition ramp is fixed on the bottom of solid controlling tank, mud
Baffle is located at mud deposition ramp.
Thimble tube drilling rod of the present invention includes more casings, and every two casings pass through casing male connector and casing female spiral shell
Line is tightly connected, and step is equipped between casing male connector and casing female for sealing.
The invention has the advantages that: it can be achieved not stop to infuse drilling well, it can be while not shutting down water injection well in oil fields
Drillng operation is carried out, the production capacity and economic benefit of old filed are improved.
Detailed description of the invention
Fig. 1 is drilling well conventional equipment functional block diagram with pressure；
Fig. 2 is the drilling rig functional block diagram with pressure that the present invention uses；
Fig. 3 is the high pressure solidifying and controlling device catenation principle figure in Fig. 2；
Fig. 4 is the solid controlling jar structure schematic diagram in Fig. 3；
Fig. 5 is the thimble tube jackrod structure schematic diagram in Fig. 2.
Specific embodiment
Below in conjunction with drawings and examples, the invention will be further described:
A kind of oil field welldrilling does not stop to infuse boring method to be balance drilling method with pressure, and this method is used for doing strata pressure
Balance and the high pressure solidifying and controlling device (as shown in Figure 2 and Figure 3) for carrying out sediment outflow, and use thimble tube drilling rod (as shown in Fig. 2, Fig. 5)
Do not stopped to infuse drilling well, high pressure solidifying and controlling device includes the solid controlling tank (as shown in Figure 4) with pipeline connection, is welded on solid controlling can body 2
It connects and is fixed with mud inlet 1, compressed gas import 3, inverse inhalation type drain pipe 4, mud solids outlet 5, mud buffer board 6, mud
Starch baffle 7, mud deposition ramp 8, gas drain 9 and slurry outlet 10.
The present embodiment uses two solid controlling tanks, as shown in figure 3, solid controlling tank A and solid controlling tank B are equipped with inverse inhalation type drain pipe 4,
Mud buffer board 6 is fixed on the solid controlling can body 2 after mud inlet 1, and mud deposition ramp 8 is fixed on the bottom of solid controlling tank
Portion, mud baffle 7 are located on mud deposition ramp 8.
Solid controlling tank design principle is: high-pressure slurry enters mud inlet 1 after coming out from well head, by mud buffer board 6
Be buffered in the ramp solid precipitation that mud deposition ramp 8 forms, the mud of solid precipitation due in tank pressure difference by inverse inhalation type row
Sandpipe 4 discharges outside the tank processing, and tank body is discharged by slurry outlet 10 in the less mud of remaining solid phase, and mud passes through throttling valve group,
Return to drilling mud jug.
The thimble tube drilling rod of the present embodiment includes more casings 11, and every two casings 11 pass through casing male connector 12 and cannula carrier
First 13 thread seal connection is equipped with step 14 for sealing between casing male connector 12 and casing female 13.
The diameter of bore of thimble tube drilling rod is identical as dimension casing.Outside is the step seal nipple form of drilling rod,
It is adapted to the holding sealing of rotating blowout preventer.After drilling well in place, drilling rod is exactly that casing can directly consolidate completion practice, is not pulled out of hole.
The method and step of the present embodiment is as follows:
One, note drilling is not stopped using thimble tube drilling rod by casing drilling mode
Normal drilling arrives high pressure zone top.Well logging can provide 20 minutes or so pre-warning times, examine all kill manifolds, high pressure
The control quality of solid controlling, preventer and rotating spray-proof head carries out open flow prediction scheme, and conscientious manoeuvre is in place.
Driller, technician, rotating blowout preventer operating post responsibility are implemented completely, it is important to: throttle valve and solid controlling with pressure are arranged
The operation of dirty valve is implemented.(it is PLC industry control Automatic Control in design, it is manual containing emergency.)
According to the length of the depth of drilling well and thimble tube drilling rod, by more thimble tube drilling rods by casing male connector and casing female into
Row connection.The end fixed drill bit of thimble tube drilling rod upon connection connects driving device at the top of thimble tube drilling rod, by band
The thimble tube drilling rod of drill bit one end is sent into pit shaft using winch lifting, then will be one by one under thimble tube drilling rod by driving device
Enter pit shaft, pit shaft is provided with casing, and thimble tube drilling rod does not come up after squeezing into lifting, and the lower brill time is greatly saved.
Common drilling well with pressure, i.e., conventional under balance pressure drilling do not need high brill with pressure the purpose is to protect based on oil-gas Layer
Well after having beaten well, mud lubrication, and play drilling rod, and another setting of casing well cementation etc. could complete drilling well work.Conventional under balance pressure drilling
Under bore hole annulus 7MPa operating pressure, a series of problems, such as trip-out can cause hole collapse.So being pressed using thimble tube drilling rod
Casing drilling mode, primary to creep into, well cementation is bored in the completion that do not pull out of hole.
Two, after opening high pressure zone, closing well builds the pressure (i.e. rotating blowout preventer aerial drainage main valve is closed in termination of pumping), obtains annular pressure value
Afterwards, then outlet main valve, and the state modulator throttle valve according to mud inlet and outlet flowmeter are driven into, makes mud inlet and outlet flowmeter
Parameter is equal.
Due to being always Operating Pressure, so that balance pressure spot needed for determining stratum in drilling process just closes very much
Key.
Flow is imported and exported according to mud, quick closing well is carried out and is balanced test.This is the drilling well with pressure of this well and well cementation behaviour
The core technology point of work and the core of full well safety work guarantee.Because of balance drilling with pressure, it is possible to use low-density mud
Slurry well-digging even clear water is beaten.
Specific implementation step is as follows:
As shown in figure 3, solid controlling tank A, solid controlling tank B are full of slurry liquid first, if the slurry liquid outlet stream of solid controlling tank A, solid controlling tank B
Amount is respectively LC(L/s)；If the mud displacement that slush pump throws thimble tube drilling rod into is LJ(L/s).
A, when the import main valve ZA of solid controlling tank A is opened in artificial selection, if LC ∠ LJ, the narrow slit being connected to solid controlling tank A
Short valve JA1, narrow slit short valve JA2 maintain normally open, and aciculiform throttling main valve ZJ is in normally open；If LC >=LJ,
It first closes narrow slit short valve JA1 mono- minute, if still LC >=LJ, turns off narrow slit short valve JA2 mono- minute.
B, when the import main valve ZB of solid controlling tank B is opened in artificial selection, if LC ∠ LJ, the narrow slit being connected to solid controlling tank B
Short valve JB1, narrow slit short valve JB2 are in normally open, and aciculiform throttling main valve ZJ is in normally open；If LC >=LJ,
It first closes narrow slit short valve JB1 mono- minute, if still LC >=LJ, turns off narrow slit short valve JB2 mono- minute.
C, when the import main valve ZB of the import main valve ZA of artificial selection solid controlling tank A and solid controlling tank B is switched on, if LC ∠
LJ, with the narrow slit short valve JA1 and narrow slit short valve JA2 of solid controlling tank A connection and the narrow slit short valve being connect with solid controlling tank B
JB1 and narrow slit short valve JB2 maintains normally open respectively, and aciculiform throttling main valve ZJ is in normally open；If LC >=LJ, first
Narrow slit short valve JA1 and narrow slit short valve JB1 mono- minute are simultaneously closed off, if still LC >=LJ, then simultaneously close off narrow slit short circuit
Valve JA2 and narrow slit short valve JB2 mono- minute；If after four minutes or LC >=LJ3, adjusting aciculiform and throttling main valve ZJ, until closing
It closes, makes LC ≈ LJ.
Three, high-pressure slurry enters mud inlet after coming out from well head, is buffered in mud deposition slope by mud buffer board
The ramp solid precipitation of road composition, according to the solid phase totality accumulated amount of the crept into footage of drill bit, the control of time opening inverse inhalation type sediment outflow
Valve processed, since pressure difference will be outside mud solid phase discharge solid controlling tank in tank；By the control of throttle valve, slurry liquid flow back into drilling mud
Tank.
Specific implementation step is as follows:
The automatic sand draining process of solid controlling tank A and solid controlling tank B are divided into two steps:
(1), when inlet total table YJ shows pressure in 2.5PMa or less, start the first automatic flow, the first automatic flow
Execute following operation:
A, the import main valve ZB of the import main valve ZA and solid controlling tank B of solid controlling tank A are opened simultaneously, the level meter WA on solid controlling tank A and
After level meter WB on solid controlling tank B indicates respectively sand setting in place, in order in turn open be connected to solid controlling tank A blowdown valve PA1,
Blowdown valve PA2, blowdown valve PA3, blowdown valve PA4 and the blowdown valve PB1 being connected to solid controlling tank B, blowdown valve PB2, blowdown valve PB3,
Blowdown valve PB4 after being separately turned on each 30 seconds, is successively closed and is stopped sediment outflow；Wait level meter WA next time on solid controlling tank A and
After level meter WB on solid controlling tank B indicates sand setting in place, solid controlling tank A and solid controlling tank B recycle sediment outflow in turn again.
B. wherein one in the narrow slit short circuit throttle valve JA1 and narrow slit short circuit throttle valve JA2 that are connected to solid controlling tank A is opened
It is a；Open simultaneously one of them in the narrow slit short circuit throttle valve JB1 being connected to solid controlling tank B and narrow slit short circuit throttle valve JB2；With
Pressure in automatic control solid controlling tank.
C, aciculiform throttling main valve ZJ after tank is manually adjusted, mud inlet flow is made to be equal to slush pump rate of discharge.
(2), when inlet total table YJ shows that pressure is more than or equal to 2.5PMa, start the second automatic flow, second certainly
Dynamic process executes following operation:
A, the import main valve ZB of the import main valve ZA and solid controlling tank B of solid controlling tank A are opened simultaneously, the level meter WA on solid controlling tank A refers to
After showing sand setting in place, import main valve ZA close, in order in turn open be connected to solid controlling tank A blowdown valve PA1, blowdown valve PA2,
Blowdown valve PA3, blowdown valve PA4 after being separately turned on each 20 seconds, are successively closed and are stopped sediment outflow；Import main valve ZA is opened, under waiting
After level meter WA indicates sand setting in place, solid controlling tank A recycles sediment outflow again.
B, after the level meter WB on solid controlling tank B indicates sand setting in place, import main valve ZB is closed, and is opened in turn in order and solid
Blowdown valve PB1, blowdown valve PB2, the blowdown valve PB3, blowdown valve PB4 of control tank B connection are successively closed after being separately turned on each 20 seconds
Close stopping sediment outflow；Import main valve ZB is opened, is waited after level meter WB indicates sand setting in place next time, the solid controlling tank B row of circulation again
Sand.
C, the narrow slit short circuit throttle valve JA1 and narrow slit short circuit throttle valve JA2 that closing is connected to solid controlling tank A；Closing and solid controlling
The narrow slit short circuit throttle valve JB1 and narrow slit short circuit throttle valve JB2 of tank B connection；For automatically controlling the pressure in solid controlling tank.
D, aciculiform throttling main valve ZJ after tank is manually adjusted, mud inlet flow is made to be equal to slush pump rate of discharge.
Four, after creeping into place, the cement that estimation annular volume disposably fills annular volume is cemented the well, by thimble tube drilling rod
It is in middle position in pit shaft, drill bit and drill collar are buried into underground, after the cementing of ground, the bottom plug in casing, spudding well mud
The slush pump gluing plug for starching tank on earth, replaces the annular space outside cement to casing, while rotary sleeve cast drilling rod, guarantees that cement is full of
Annular space.
Cementing truck well cementation, lower rubber sleeve, slush pump, which beats mud, to be made instead to arrive plu table set on cement, and building the pressure, it is solidifying to wait, (with spacious pressure
Hou Ning), survey sound width sees cementing quality.
The anti-stratum of cementing slurry dilutes design: balancing dynamic strata pressure because not stopping note, there is formation leakage and ground
Layer goes out water-reducible danger, needs to add grouting composition peach shell sealing agent and glass microballoon isodensity modifying ingredients, isolation
Liquid has stratum diverting agent etc..
Guarantee that cementing quality will guarantee that thimble tube drilling rod is in approximate middle position in pit shaft, this is that well cementation is qualified
Guarantee, especially at oil reservoir position.So needing revoling tube while mud of cementing the well suppresses rubber plug float collar and replaces cement slurry
Type drilling rod, guarantee cement slurry is full of annular space.
This method uses its technological core of high pressure solidifying and controlling device: being to do what strata pressure balanced with the rotating blowout preventer on ground
Main means (conventional drilling well with pressure is with weighted mud for main pressure balance means, and rotating blowout preventer is supplementary means), because making
With high pressure solidifying and controlling device, it is possible to use wash boring, use no or little mud and carry out equilibrium strata pressure, evade a series of undergrounds
The problems such as spray of ground interlayer, leakage, partial circulating.
Claims (3)
1. a kind of oil field welldrilling does not stop to infuse boring method, which is characterized in that described not stop to infuse drilling well to be balance drilling with pressure
Method, this method uses the high pressure solidifying and controlling device for doing strata pressure balance and progress sediment outflow, and uses thimble tube drilling rod
Do not stopped to infuse drilling well, high pressure solidifying and controlling device includes the solid controlling tank with pipeline connection, solid controlling can body be equipped with mud inlet,
Compressed gas import, inverse inhalation type drain pipe, mud solids outlet, mud buffer board, mud baffle, mud deposit ramp, gas
Drain and slurry outlet, the method have following steps:
One, note drilling is not stopped using thimble tube drilling rod by casing drilling mode；
Two, after opening high pressure zone, closing well builds the pressure, and after obtaining annular pressure value, then drives a mouthful main valve into, and imports and exports and flow according to mud
The state modulator throttle valve of meter keeps the parameter of mud inlet and outlet flowmeter equal；
Three, high-pressure slurry enters mud inlet after coming out from well head, is buffered in mud deposition ramp group by mud buffer board
At ramp solid precipitation, according to the solid phase totality accumulated amount of the crept into footage of drill bit, time opening solid controlling tank inverse inhalation type drain pipe
Control valve, since pressure difference will be outside mud solid phase discharge solid controlling tank in tank；By the control of throttle valve, slurry liquid flow back into drilling well mud
Starch tank；
Four, after creeping into place, the cement that estimation annular volume disposably fills annular volume is cemented the well, and the thimble tube is bored
Bar is in middle position in pit shaft, and drill bit and drill collar are buried underground, after the cementing of ground, the bottom plug in casing, and spudding well
The slush pump gluing plug of slurry tank on earth, replaces the annular space outside cement to casing, while rotary sleeve cast drilling rod, guarantees that cement fills
Full annular space.
2. a kind of oil field welldrilling according to claim 1 does not stop to infuse boring method, which is characterized in that the solid controlling tank
Using one or more, each solid controlling tank is equipped with inverse inhalation type drain pipe, and mud buffer board is fixed on consolidating after mud inlet
It controls on can body, mud deposition ramp is fixed on the bottom of solid controlling tank, and mud baffle is located at mud deposition ramp.
3. a kind of oil field welldrilling according to claim 1 does not stop to infuse boring method, which is characterized in that the thimble tube
Drilling rod includes more casings, and every two casings are tightly connected by casing male connector and cannula carrier head thread, casing male connector and casing
Step is equipped between female for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229670.5A CN109403861B (en) | 2018-10-22 | 2018-10-22 | Non-stop drilling method for oil field drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811229670.5A CN109403861B (en) | 2018-10-22 | 2018-10-22 | Non-stop drilling method for oil field drilling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109403861A true CN109403861A (en) | 2019-03-01 |
| CN109403861B CN109403861B (en) | 2020-02-14 |
Family
ID=65468787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811229670.5A Active CN109403861B (en) | 2018-10-22 | 2018-10-22 | Non-stop drilling method for oil field drilling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110604121A (en) * | 2019-09-19 | 2019-12-24 | 国网山东省电力公司青岛供电公司 | Timely-driving windmill bird repeller and control method |
| CN113404430A (en) * | 2021-05-27 | 2021-09-17 | 中国一冶集团有限公司 | Safe embedding method of freezing pipe |
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| CN2737935Y (en) * | 2004-10-25 | 2005-11-02 | 甘肃圣邦电子科技有限公司 | Oil field water injection well flow regulating valve |
| US20130182098A1 (en) * | 2012-01-13 | 2013-07-18 | Multi-Shot, Llc | Downhole Digital Survey Camera |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110604121A (en) * | 2019-09-19 | 2019-12-24 | 国网山东省电力公司青岛供电公司 | Timely-driving windmill bird repeller and control method |
| CN113404430A (en) * | 2021-05-27 | 2021-09-17 | 中国一冶集团有限公司 | Safe embedding method of freezing pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109403861B (en) | 2020-02-14 |
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