CN109736737A - A kind of method of reservoir gas drilling well non-snubbing service - Google Patents
A kind of method of reservoir gas drilling well non-snubbing service Download PDFInfo
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- CN109736737A CN109736737A CN201910009287.7A CN201910009287A CN109736737A CN 109736737 A CN109736737 A CN 109736737A CN 201910009287 A CN201910009287 A CN 201910009287A CN 109736737 A CN109736737 A CN 109736737A
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Abstract
The invention discloses a kind of methods of reservoir gas drilling well non-snubbing service, belong to overall process under-balance and gas drilling applications.Including boring four parts under wellhead assembly configuration, the trip-out of sediment outflow pipeline configuration, no killing well and no killing well, cover equipment configurations, processing step and the technical requirements for implementing non-snubbing service after boring chance gas-bearing formation in gas drilling, with very strong safety and operability, entire drilling well, Completion Operations can be kept to be in under-balanced state in reservoir gas drilling well by this method, will not caused any harm to reservoir.
Description
Technical field
The present invention relates to petroleum, gas drilling technology, particularly relate to a kind of using gas as circulatory mediator brill
Well bore meet gas-bearing formation when safety, to reservoir zero injure tripping method, belong to overall process under-balance and gas drilling applications.
Background technique
With high yield, easily petering out for petroleum resources of exploitation and being continuously increased for Demand of Oil & Gas, unconventional oil and gas is existing
Real strategic making & breaking.Fine and close oil gas is one kind and the maximum one kind of Hydrocarbon Resources Potential in unconventional oil and gas.China
Fine and close oil gas accounts for newly verifies the 35% of oilreserves in recent years, accounts for 40% or more of oily stock number to be found, domestic nearly all oil-containing
Medium and deep multilayer position (Silurian, the Devonian system, the Carboniferous System, two in gas basin (multiple basins such as Sichuan, Erdos, Tarim Basin)
Folded system, the Triassic system, Jurassic system-Cretaceous System, Paleogene System etc.) all it is distributed, there is extremely wide potentiality to be exploited.Fine and close oil gas
Hiding is due to the storage of its low-porosity (< 10%), Extra-low permeability (< 0.1mD) and unique fluid, production feature, conventional drilling
The bottleneck problem faced has that easily injury, difficult discovery, well yield is low, input and output is of poor benefits.It is generally acknowledged that nitrogen, which is drilled well,
The most effective means of such petroleum resources are exploited, it can find reservoir with 100%, obtain the initial production capacity of reservoir；To reservoir zero
Injury improves well yield and recovery ratio.In recent years Sichuan, Tarim Basin, Jilin, Kelamayi, spit Kazakhstan etc. oil gas fields obtain
Large-scale application, year-on-year mud are drilled well well yield and improve 3~20 times, realize low pressure, the benefit of low permeability reservoirs
Exploitation, while a batch construction being promoted to obtain breakthrough exploration results.
Natural gas is perhaps from spraying well or carrying out well with landwaste after opening reservoir using gas drilling in the past, if producing
Tolerance is larger made a trip or complete well before also need first not only to have injured reservoir for mud lubrication, using gas before also destroying
The initial production capacity that body drilling well obtains it requires that drilling well, complete well overall process keep under-balanced state, this is to process safety, well head
And surface line reliability proposes requirements at the higher level.Wellhead assembly requires have the ability for sealing different size drilling tools；Drain pipe
Line open flow ability safe clearance is big, is provided simultaneously with emergency flight control, decompression function；Operating procedure ensure natural gas wellhead without aggregation,
Zero leakage, it is ensured that work progress is without any well control risk.
Summary of the invention
The present invention is directed to for defect and deficiency present in the above-mentioned prior art, provide a kind of reservoir gas drilling well not press
The method that well makes a trip, this method specify the application conditions of non-snubbing service, and equipment configurations, process flow and technology are wanted
It asks, there is very strong practicability.
The present invention is realized by using following technical proposals:
A kind of method of reservoir gas drilling well non-snubbing service, it is characterised in that: match including wellhead assembly configuration, sediment outflow pipeline
It sets, four parts of driller's skill under no killing well trip-out technique and no killing well, in which:
The wellhead assembly configuration is the well head control facility for configuring reservoir gas drilling well and carrying out non-snubbing service；Described
Sediment outflow pipeline configuration is the fuel gas ground passing away that reservoir gas drilling well carries out non-snubbing service, and latus rectum is not less than
203mm, sediment outflow pipeline is straight to be laid with to combustion cell, such as there is deflecting because of the limitation of conditions, and inside turn angle in well site is not less than 150 °, and
At well site edge, sediment outflow end of line leads directly to direction installation pressure relief safety valve, and setting pressure is not higher than 2.0MPa；Pressure relief safety valve
Upstream drain pipe line bearing capacity is not less than 7MPa, and downstream drain pipe line bearing capacity is not less than 4MPa.
The wellhead assembly configuration includes the rotating blowout preventer, annular preventer, double disc to match with reservoir pressure
Preventer, drilling spool, choke manifold, blowout prevention pipeline and relief line；Annular preventer trip-out time control pressing pressure turn down to
5.0~6.0Mpa.Double ram type preventer half seals flashboard and is mounted on, and blind rams is mounted on down, in blowout prevention pipeline close to well head
Liquid-operated flat valve is installed in side, and liquid-operated flat valve is in normally off, leads directly to all gate valves on the relief line of direction thereafter and locates
In normally open, relief line exit point ever-burning flame.
The sediment outflow line inlet installs sediment outflow pipeline liquid-operated flat valve, installs on away from the sediment outflow pipeline at well head 6m
Injection pipe nipple is not less than 60m by injecting into injection pipe nipple when non-snubbing service3The nitrogen of/min is formed negative in well head
Press the fuel gas pumping of assembling well head to sediment outflow pipeline outlet, sediment outflow pipeline exit point ever-burning flame.
The no killing well trip-out technique, includes the following steps:
The first step detects stratum and produces gas situation, using the dress with pressure that makes a trip when open flow has casing pressure or gas production more than 100,000 sides/day
Set operation；
Second step opens sediment outflow pipeline liquid-operated flat valve, closes blowout prevention pipeline liquid-operated flat valve, passes through injection pipe nipple nitrogen injection pair
Well head carries out pumping, and combustable gas concentration, when no display pull out of hole detection rig floor up and down；
Third step acts drill assembly in pit shaft, seals annular space with rotating blowout preventer, rises and is placed in centralizer when being drilled into centralizer
Between annular preventer top cover and rotating blowout preventer rubber core；
4th step closes annular preventer, opens blowout prevention pipeline liquid-operated flat valve, takes out rotating blowout preventer and controls assembly；
5th step seals annular space with annular preventer, above mentions drilling tool to drill bit and is higher than blind rams；
6th step closes blind rams, opens annular preventer, acts remaining drilling tool, completes to pull out of hole.
Drill assembly uses the drill finish of 18 ° of slope drilling rods and uniform sizes quickly, and quickly outside diameter tolerance is not more than 2mm to drill finish,
Nearly drill bit installs two normally closed type check-valves.
Driller's skill, includes the following steps: under the no killing well
The first step detects stratum and produces gas situation, using the dress with pressure that makes a trip when open flow has casing pressure or gas production more than 100,000 sides/day
Set operation；
Second step opens sediment outflow pipeline liquid-operated flat valve, closes blowout prevention pipeline liquid-operated flat valve, passes through injection pipe nipple nitrogen injection pair
Well head carries out pumping, and detection rig floor up and down bore at present by combustable gas concentration, no display；
Third step installs rotating blowout preventer and controls assembly, and tripping in drill assembly to drill bit is located above blind rams；
4th step opens blind rams, seals annular space with rotating blowout preventer, completes lower bore.
Drill assembly uses the drill finish of 18 ° of slope drilling rods and uniform sizes quickly, and quickly outside diameter tolerance is not more than 2mm to drill finish,
Nearly drill bit installs two normally closed type check-valves.
Compared with prior art, the beneficial effects obtained by the present invention are as follows it is as follows:
1, using of the present invention by being bored under wellhead assembly configuration, sediment outflow pipeline configuration, no killing well trip-out technique and no killing well
The reservoir gas drilling well non-snubbing service method of technique composition can pacify when creeping into gas pay using gas as circulatory mediator
The operation that makes a trip is carried out entirely, does not cause any harm to reservoir, entire drilling well, Completion Operations can be kept to be in underbalance shape
State.
2, present invention encompasses equipment configurations, the technique steps of implementing non-snubbing service after the brill chance gas-bearing formation in gas drilling
Rapid and technical requirements have very strong safety and operability, can keep whole in reservoir gas drilling well by this method
A drilling well, Completion Operations are in under-balanced state, will not cause any harm to reservoir.
Detailed description of the invention
Below in conjunction with specification drawings and specific embodiments, the present invention is described in further detail, in which:
Fig. 1 is wellhead assembly, the surface line connection signal schematic diagram of the method for reservoir gas drilling well non-snubbing service.
Marked in the figure:
1, rotating blowout preventer controls assembly；2, rotating blowout preventer rubber core；3, rotating blowout preventer；4, annular preventer top cover；5, ring
Shape preventer；6, half envelope flashboard；7, blind rams；8, drilling spool；9,18 ° of slope drilling rods；10, normally closed type check-valves；11, light
Drill collar；12, centralizer；13, blowout prevention pipeline；14, blowout prevention pipeline liquid-operated flat valve；15, double ram type preventer；16, injection pipe nipple；
17, sediment outflow pipeline liquid-operated flat valve；18, relief line exports；19, sediment outflow pipeline outlet；20, sediment outflow pipeline；21, throttle pipe
It converges；22, relief line；23, pressure relief safety valve；24, combustion cell；25, drill bit.
Specific embodiment
Embodiment 1
As a better embodiment of the invention, it discloses a kind of method of reservoir gas drilling well non-snubbing service, packets
Include four parts of driller's skill under wellhead assembly configuration, sediment outflow pipeline configuration, no killing well trip-out technique and no killing well, in which: described
Wellhead assembly configuration be configure reservoir gas drilling well carry out non-snubbing service well head control facility；The sediment outflow pipeline
Configuration is the fuel gas ground passing away that reservoir gas drilling well carries out non-snubbing service, and latus rectum is not less than 203mm, sediment outflow
Pipeline is straight to be laid with to combustion cell, such as there is deflecting because of the limitation of conditions, and inside turn angle in well site is not less than 150 °, and at well site edge
Sediment outflow end of line, which leads directly to direction, installs pressure relief safety valve, and setting pressure is not higher than 2.0MPa；Pressure relief safety valve upstream drain pipe
Line bearing capacity is not less than 7MPa, and downstream drain pipe line bearing capacity is not less than 4MPa.
Embodiment 2
Referring to Figure of description, as preferred forms of the invention comprising wellhead assembly configuration, sediment outflow pipeline configuration,
Four parts of driller's skill under no killing well trip-out technique and no killing well, in which:
Wellhead assembly configuration be reservoir gas drilling well carry out non-snubbing service well head control facility, including with reservoir pressure phase
Matched rotating blowout preventer 3, annular preventer 5, double ram type preventer 15, drilling spool 8, choke manifold 21, blowout prevention pipeline 13
With relief line 22；
Annular preventer 5 is turned down in trip-out time control pressing pressure to 5.0~6.0Mpa.
15 half envelope flashboard 6 of double ram type preventer is mounted on, and blind rams 7 is mounted on down.
Liquid-operated flat valve 14 is installed close to well head side in blowout prevention pipeline 13, liquid-operated flat valve 14 is in normally off,
All gate valves on direction relief line 22 are led directly to afterwards is in normally open.
Relief line exports 18 ever-burning flames.
Sediment outflow pipeline configuration is the fuel gas ground passing away that reservoir gas drilling well carries out non-snubbing service, latus rectum
Not less than 203mm, sediment outflow pipeline 20 is straight to be laid with to combustion cell 24, such as has deflecting because of the limitation of conditions, well site inside turn angle is not
Less than 150 °, and in well site, 20 end of sediment outflow pipeline leads directly to direction installation pressure relief safety valve 23, and setting pressure is not higher than
2.0MPa；23 upstream drain pipe line of pressure relief safety valve, 20 bearing capacity is not less than 7MPa, and 20 bearing capacity of downstream drain pipe line is not
Lower than 4MPa.
20 entrance of sediment outflow pipeline installs sediment outflow pipeline liquid-operated flat valve 17.
Away from installing injection pipe nipple 16 on the sediment outflow pipeline 20 at well head 6m, by injection pipe nipple when non-snubbing service
Injection is not less than the nitrogen of 60m3/min in 16, in the fuel gas pumping that well head formation negative pressure assembles well head to sediment outflow pipeline
Outlet 19.
19 ever-burning flames of sediment outflow pipeline outlet.
No killing well trip-out technique, includes the following steps:
The first step detects stratum and produces gas situation, using the dress with pressure that makes a trip when open flow has casing pressure or gas production more than 100,000 sides/day
Set operation；
Second step opens sediment outflow pipeline liquid-operated flat valve 17, closes blowout prevention pipeline liquid-operated flat valve 14, passes through 16 note of injection pipe nipple
Nitrogen carries out pumping to well head, and combustable gas concentration, when no display pull out of hole detection rig floor up and down；
Third step acts drill assembly in pit shaft, seals annular space with rotating blowout preventer 3, rises centralizer when being drilled into centralizer 12
12 are placed between annular preventer top cover 4 and rotating blowout preventer rubber core 2；
4th step closes annular preventer 5, opens blowout prevention pipeline liquid-operated flat valve 14, takes out rotating blowout preventer and controls assembly 1；
5th step seals annular space with annular preventer 5, above mentions drilling tool to drill bit 25 and is higher than blind rams 7；
6th step closes blind rams 7, opens annular preventer 5, acts remaining drilling tool, completes to pull out of hole.
Drill assembly is using the drill finish quickly 11 of 18 ° of slope drilling rods 9 and uniform sizes, and quickly 11 outside diameter tolerances are not more than drill finish
2mm, nearly drill bit install two normally closed type check-valves 10.
Driller's skill, includes the following steps: under the no killing well
The first step detects stratum and produces gas situation, using the dress with pressure that makes a trip when open flow has casing pressure or gas production more than 100,000 sides/day
Set operation；
Second step opens sediment outflow pipeline liquid-operated flat valve 17, closes blowout prevention pipeline liquid-operated flat valve 14, passes through 16 note of injection pipe nipple
Nitrogen carries out pumping to well head, and detection rig floor up and down bore at present by combustable gas concentration, no display；
Third step installs rotating blowout preventer and controls assembly 1, and tripping in drill assembly to drill bit 25 is located above blind rams 7；
4th step opens blind rams 7, seals annular space with rotating blowout preventer 5, completes lower bore.
Drill assembly is using the drill finish quickly 11 of 18 ° of slope drilling rods 9 and uniform sizes, and quickly outside diameter tolerance is not more than drill finish
2mm, nearly drill bit install two normally closed type check-valves 10.
Claims (7)
1. a kind of method of reservoir gas drilling well non-snubbing service, it is characterised in that: including wellhead assembly configuration, sediment outflow pipeline
Four parts of driller's skill under configuration, no killing well trip-out technique and no killing well, in which: the wellhead assembly configuration is configuration reservoir
The well head that gas drilling carries out non-snubbing service controls facility；The sediment outflow pipeline configuration is that reservoir gas drilling well carries out not
The fuel gas ground passing away that kill-job makes a trip, latus rectum are not less than 203mm, laying that sediment outflow pipeline is straight to combustion cell, such as
There is deflecting because of the limitation of conditions, inside turn angle in well site is not less than 150 °, and leads directly to direction in well site edge sediment outflow end of line and pacify
Pressure relief safety valve is filled, setting pressure is not higher than 2.0MPa；Pressure relief safety valve upstream drain pipe line bearing capacity is not less than 7MPa, under
It swims sediment outflow pipeline bearing capacity and is not less than 4MPa.
2. a kind of method of reservoir gas drilling well non-snubbing service according to claim 1, it is characterised in that: described
Wellhead assembly configuration includes the rotating blowout preventer to match with reservoir pressure, annular preventer, double ram type preventer, drilling well four
Logical, choke manifold, blowout prevention pipeline and relief line；Annular preventer is turned down in trip-out time control pressing pressure to 5.0~6.0Mpa, double
Ram preventer half seals flashboard and is mounted on, and blind rams is mounted on down, surges in blowout prevention pipeline close to the installation of well head side flat
Plate valve, liquid-operated flat valve are in normally off, lead directly to all gate valves on the relief line of direction thereafter and are in normally open, open flow
Pipeline outlet point ever-burning flame.
3. a kind of method of reservoir gas drilling well non-snubbing service according to claim 1, it is characterised in that: described
Sediment outflow line inlet installs sediment outflow pipeline liquid-operated flat valve, away from injection pipe nipple is installed on the sediment outflow pipeline at well head 6m, does not press
It is not less than 60m by injecting into injection pipe nipple when well makes a trip3The nitrogen of/min forms what negative pressure assembled well head in well head
Fuel gas pumping is to sediment outflow pipeline outlet, sediment outflow pipeline exit point ever-burning flame.
4. a kind of method of reservoir gas drilling well non-snubbing service according to claim 1, it is characterised in that: described
No killing well trip-out technique, includes the following steps:
The first step detects stratum and produces gas situation, using the dress with pressure that makes a trip when open flow has casing pressure or gas production more than 100,000 sides/day
Set operation；
Second step opens sediment outflow pipeline liquid-operated flat valve, closes blowout prevention pipeline liquid-operated flat valve, passes through injection pipe nipple nitrogen injection pair
Well head carries out pumping, and combustable gas concentration, when no display pull out of hole detection rig floor up and down；
Third step acts drill assembly in pit shaft, seals annular space with rotating blowout preventer, rises and is placed in centralizer when being drilled into centralizer
Between annular preventer top cover and rotating blowout preventer rubber core；
4th step closes annular preventer, opens blowout prevention pipeline liquid-operated flat valve, takes out rotating blowout preventer and controls assembly；
5th step seals annular space with annular preventer, above mentions drilling tool to drill bit and is higher than blind rams；
6th step closes blind rams, opens annular preventer, acts remaining drilling tool, completes to pull out of hole.
5. a kind of method of reservoir gas drilling well non-snubbing service according to claim 4, it is characterised in that: drill set
It closes using the drill finish of 18 ° of slope drilling rods and uniform sizes quickly, and quickly outside diameter tolerance is not more than 2mm to drill finish, nearly drill bit installs two
Normally closed type check-valves.
6. a kind of method of reservoir gas drilling well non-snubbing service according to claim 1, it is characterised in that: described
Driller's skill under no killing well, includes the following steps:
The first step detects stratum and produces gas situation, using the dress with pressure that makes a trip when open flow has casing pressure or gas production more than 100,000 sides/day
Set operation；
Second step opens sediment outflow pipeline liquid-operated flat valve, closes blowout prevention pipeline liquid-operated flat valve, passes through injection pipe nipple nitrogen injection pair
Well head carries out pumping, and detection rig floor up and down bore at present by combustable gas concentration, no display；
Third step installs rotating blowout preventer and controls assembly, and tripping in drill assembly to drill bit is located above blind rams；
4th step opens blind rams, seals annular space with rotating blowout preventer, completes lower bore.
7. a kind of method of reservoir gas drilling well non-snubbing service according to claim 6, it is characterised in that: drill set
It closes using the drill finish of 18 ° of slope drilling rods and uniform sizes quickly, and quickly outside diameter tolerance is not more than 2mm to drill finish, nearly drill bit installs two
Normally closed type check-valves.
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| CN201910009287.7A CN109736737B (en) | 2019-01-04 | 2019-01-04 | Method for snubbing tripping of reservoir gas drilling well |
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| CN201910009287.7A CN109736737B (en) | 2019-01-04 | 2019-01-04 | Method for snubbing tripping of reservoir gas drilling well |
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| CN109736737B CN109736737B (en) | 2021-03-30 |
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| CN110410041A (en) * | 2019-09-06 | 2019-11-05 | 中国石油集团川庆钻探工程有限公司 | A kind of well head safe operating system based on the axial tiltedly spray suction row of helping |
| CN110410040A (en) * | 2019-09-06 | 2019-11-05 | 中国石油集团川庆钻探工程有限公司 | A kind of safety work system based on the adjustable annular suction row's of helping well head combustible gas |
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| CN110821445A (en) * | 2019-10-16 | 2020-02-21 | 中国石油集团川庆钻探工程有限公司 | Nitrogen pumping operation method under condition of low-volume natural gas formation |
| CN110886589A (en) * | 2019-10-30 | 2020-03-17 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | System and method for preventing slurry leakage of rotary blowout preventer |
| CN116696270A (en) * | 2023-07-28 | 2023-09-05 | 大庆市天德忠石油科技有限公司 | Sand-proof throttling well-killing manifold |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110821445A (en) * | 2019-10-16 | 2020-02-21 | 中国石油集团川庆钻探工程有限公司 | Nitrogen pumping operation method under condition of low-volume natural gas formation |
| CN110886589A (en) * | 2019-10-30 | 2020-03-17 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | System and method for preventing slurry leakage of rotary blowout preventer |
| CN116696270A (en) * | 2023-07-28 | 2023-09-05 | 大庆市天德忠石油科技有限公司 | Sand-proof throttling well-killing manifold |
| CN116696270B (en) * | 2023-07-28 | 2023-10-27 | 大庆市天德忠石油科技有限公司 | Sand-proof throttling well-killing manifold |
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| CN109736737B (en) | 2021-03-30 |
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