CN208294471U - It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system - Google Patents
It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system Download PDFInfo
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- CN208294471U CN208294471U CN201820762112.4U CN201820762112U CN208294471U CN 208294471 U CN208294471 U CN 208294471U CN 201820762112 U CN201820762112 U CN 201820762112U CN 208294471 U CN208294471 U CN 208294471U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000005553 drilling Methods 0.000 title claims abstract description 64
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 206010037180 Psychiatric symptoms Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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Abstract
The utility model relates to a kind of for deep water without marine riser gas lift reverse circulation drilling well system, including slurry injection system and gaslift reverse cycle coring drilling system；The slurry injection system includes sequentially connected returning to cone, flow in pipes, mud injection pump and slurry tank；The gas lift reverse circulation core-drilling system includes air compressor, air water faucet, double-wall drill pipe, gas-water mixer and single wall drilling rod, air compressor is connect with air water faucet, air water faucet lower end is connect with double-wall drill pipe, the lower end of double-wall drill pipe is separately connected with gas-water mixer, the lower end of gas-water mixer is connect with single wall drilling rod, and the cone that returns to is arranged on the outer wall of drilling rod connection.The utility model is not necessarily to water proof measure, realizes mud circulation and the protection borehole wall in drilling, can be applied to any depth of water；Rock core and landwaste are conveyed using gas lift reverse circulation principle, reduce construction time and cost；Reduce the requirement to mud injection pump, good reliability.
Description
Technical field
The utility model relates to oil gas drilling technical field, it is specifically a kind of for deep water without marine riser gas lift reverse circulation
Well system.
Background technique
Nowadays, be related to oil-gas exploration the depth of water be it is deeper and deeper, drilling depth is even more than several kms, conventional ocean
In deepwater drilling, the closed circuit drilling well of marine riser direct circulation or the method without marine riser direct circulation open circuit drilling well are generallyd use, it is above
The existing equal Shortcomings of well system: 1) mating complicated, complicated for operation using marine riser well system, load acts on well
Mouth soft formation influences well head stability, and causes mud when holding mud (also known as drilling fluid) closed cycle in conventional marine riser
Slurry circulation pressure drop increases, and causes greatly to restrict to the construction of narrow space Density Window, to closed circuit drilling well-head sealing requirements
It is very strict, and the emergency release program for meeting emergency case is complicated, and risk is high；2) it is turned round, is opened using conventional open circuit direct circulation
Road drilling mud is flow to from drill bit from ship by drilling rod, flows out to the annular space between drilling rod and the borehole wall by hydrophthalmia, and annular space is without closing
Circulation, mud are directly discharged in seawater from well head, and not only mud consumption is very big, and mud is at high cost, and drilling fluid is direct
Row sea pollutes environment；If it is counterflush drilling system, the common pump pressure reacting cycle of existing method needs powerful injection
Mud is continuously injected into annular space by pumping system, then enters drilling rod up to returning from drill bit by Transport of Drilling Cutting In A
Out, this will propose that very high requirement needs to flow through the depth of water of several kms if applying to deep-sea to the ability of injection pump, this
The power cutting carring that the injection pump of sample provides, which flows through several kms and returns out, seems extremely difficult, and cost and risk is higher；3) borehole wall
It is easy to be impacted by mud especially at well head, stability cannot get effective guarantee, and mud speed rate is insufficient, cause in drilling
Landwaste carrying effect is poor, easily causes bit freezing, rock core is easy chip off-falling, and the quality of core sample is difficult to ensure；4) gas lift reverse circulation skill
Art is usually applied to Hydrology geology well, well is often used, but these well depths only have several hundred rice, and deep-marine-environment
Under, need to overcome the on-way resistance of several kms, conventional configuration is difficult to meet deep-sea requirement.
Utility model content
In view of the deficiencies of the prior art, the utility model provide it is a kind of based on circulating fluid without the quick coring of marine riser
Well system is able to solve the problem of drilling well hardly possible under deepwater environment, the problem for especially requiring injection pump energy high.
The technical solution of the utility model are as follows: it is a kind of for deep water without marine riser gas lift reverse circulation drilling well system, it is special
Sign is: including slurry injection system and gaslift reverse cycle coring drilling system；The slurry injection system includes being sequentially connected
Return to cone, flow in pipes, mud injection pump and slurry tank；The gas lift reverse circulation core-drilling system includes air compression
Machine, air water faucet, double-wall drill pipe gas-water mixer and single wall drilling rod, air compressor are connect with the upper end of air water faucet, double-walled
The lower end of the gentle tap in the upper end of drilling rod connects, and the lower end of double-wall drill pipe is connected with the upper end of gas-water mixer, mixing wastewater with air
The lower end of device is connect with single wall drilling rod, and the single wall drilling rod is connect with core bit, and single wall drilling rod is passed through from the lumen for returning to cone,
It returns between the inner wall of cone and the outer wall of single wall drilling rod and forms annular region；Connection, top are driven in the upper end and top of the air water faucet
It drives and is connect by pipeline with sampler, sampler is used to store the core sample obtained；Air compressor is bored by double-walled
Gas access is formed between bar outer tube and gas-water mixer, and mud circulation passage is formed between mud injection pump and gas-water mixer,
Gas-water mixer forms access by double-wall drill pipe inner tube and sampler.
Further, the flow in pipes is equipped with flow control valve, for controlling the mud pressure of process in flow in pipes
Power and flow.
Further, the cone that returns to is equipped with preventer.
Further, it is equipped with air inlet non-return valve between the air compressor and air water faucet, for preventing compressed air
Reverse flow.
Further, it is described top drive by top drive on interface connect with pipeline, pipeline is connect with sampler, push up drive and
The junction of interface is equipped with the blowout joint for preventing mud from spraying.
The utility model has the following beneficial effects:
(1) special water proof measure is not necessarily to, it can be achieved that mud recycles and protects the borehole wall in drilling, and can be applied to any water
It is deep, even if the depth of water is more than several kms, also still can be used normally；
(2) rock core and landwaste are continuously conveyed using gas lift reverse circulation principle and then realization, drilling construction will not be because of coring
Operation and interrupt, construction non-cutting time is short, ultrahigh in efficiency, therefore significantly reduces construction time and cost；Creep into the rock core generated
With rig floor is returned in landwaste whole, the product that imitate with not will cause missing；
(3) deep water slurry injection system can accurately control the pressure and flow of injection mud, and construction risk is low, air water
The density contrast for mixing generation is about to mud certainly and is taken out of, and the Capability Requirement to mud injection pump is reduced, anti-compared to conventional pump pressure
Circulation, save the cost, good reliability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure, 1- is driven on top, 2- air water faucet, 3- blowout joint control cable, 4- slurry tank, 5- mud injection pump, 6- flow
Control valve, 7- preventer control cable, 8- core bit, 9- single wall drilling rod, 10- preventer, 11- return to cone, 12- mixing wastewater with air
Device, 13- double-wall drill pipe, 14- air compressor, 15- sampler, 16- air inlet non-return valve, 17- blowout joint, 18- double-walled bore
Bar inner tube, 19- flow in pipes, 20- double-wall drill pipe outer tube.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model:
As shown in Figure 1, it is a kind of for deep water without marine riser gas lift reverse circulation drilling well system, including slurry injection system and
Gas lift reverse circulation core-drilling system；The slurry injection system include it is sequentially connected return to cone 11, flow in pipes 19 and
Mud injection pump 5 and slurry tank 4 on the drilling ship of sea, the mud being stored in slurry tank 4 are inhaled by mud injection pump 5
After entering, it is fed through and is returned in cone 11 along flow in pipes 19；The gas lift reverse circulation core-drilling system includes air compressor
14, air water faucet 2, double-wall drill pipe 13, double-wall drill pipe inner tube 18, gas-water mixer 12, single wall drilling rod 9 and core bit 8, air
Compressor 14 is connect with the mountain loneliness of air water faucet 2 by pipeline and compressed air is fed through in air water faucet 2, and double-walled bores
Bar 13 includes double-wall drill pipe inner tube 20 and double-wall drill pipe inner tube 18, the upper end of double-wall drill pipe 13 lower end with air water faucet 2 respectively
Connection, air water faucet 2 is mutually indepedent with the communicating passage of double-wall drill pipe inner tube 20 and double-wall drill pipe inner tube 18, double-wall drill pipe 13
Lower end and the upper end of gas-water mixer 12 are separately connected, gas-water mixer 12 and double-wall drill pipe inner tube 20 and double-wall drill pipe inner tube
18 communicating passage is mutually indepedent, and the lower end of gas-water mixer 12 is connect with single wall drilling rod 9, the single wall drilling rod 9 and column drill
First 8 connection, single wall drilling rod 9 are passed through from the lumen for returning to cone 11, return to shape between the inner wall of cone 11 and the outer wall of single wall drilling rod 9
At annular region；The upper end of the air water faucet 2 is driven 1 with top and is connect, and top is driven 1 by pipeline and is arranged on the drill ship of sea
Sampler 15 connects, and sampler 15 is used to store the core sample obtained.
In the present embodiment, mud injection pump 5 is equipped with flow control valve 6 with the flow in pipes 19 that cone 11 is connect is returned to,
For controlling the mud pressure and flow of process in flow in pipes 19；It returns to cone 11 and is equipped with preventer 10, preventer 10 passes through
Preventer control cable 7 is connect with sea drill ship, so as to control preventer 10, preventer 10 can be set to it is multiple, it is excellent
It is selected as two；Air inlet non-return valve 16 is equipped between air compressor 14 and air water faucet 2, air inlet non-return valve 16 is arranged in pipeline
On, for preventing compressed air out of air water leading 2 reverse flows to air compressor 14；1 is driven by the interface in top drive 1 in top
It is connect with pipeline, pipeline is connect with sampler 15 again, and top drive 1 and the junction of interface are equipped with blowout joint 17, for preventing
Mud sprays, and blowout joint 17 controls cable 3 by blowout joint 17 and connect with sea drill ship, so as to control blowout joint
The operations such as 17 rotations.
When specifically used, the mud being stored in slurry tank 4 is fed through in flow in pipes 19 by mud injection pump 5, warp
After overcurrent control valve 6 controls pressure and the flow of mud, mud, which is fed through, to be returned in cone 11, and flowing downward to enter is located at
Single wall drilling rod 9 in well and the annular region between cone 11 is returned to, core bit 8 can also mix during drilling well obtains rock core
Entering some landwaste, landwaste and rock core, which are mixed into, to be flowed up into mud together to the lumen channel of single wall drilling rod 9, until
Into in gas-water mixer 12；On the other hand, compressed air is sent into double-wall drill pipe 13 by air water faucet 2 by air compressor 14
Lumen channel in, compressed air, which flows downward, to be entered to gas-water mixer 12 and mutually mixes with the mud in gas-water mixer 12
It closes；Compressed air enters in double-wall drill pipe 13 via after gas-water mixer 12, is mixed to form with mud more lower than mud density
Gas-liquid mixing liquid makes the fluid density inside and outside the pipe of double-wall drill pipe 13 produce difference, so inside and outside the pipe of double-wall drill pipe it
Between form pressure difference, so that gas lift reverse circulation, reduces the Capability Requirement to mud injection pump 5, can to transport in lower power
Mud injection pump 5 under row, mud and rock core can also be fed through in sampler 15, counter compared to traditional pump pressure to follow
Ring more save the cost, reliability are higher；Under such differential pressure action, the mud that driving is located at lower part in pipe lifts upwards, makes
The inner cavity that the mud in the outer annular region of the single wall drilling rod 9 in well enters single wall drilling rod 9 is obtained, and is passed through to gas-water mixer
Enter in double-wall drill pipe inner tube 18 after 12, the mud for being mixed with compressed air drives 1 upwards along inner tube 18, air water faucet 2 and top
Flowing, eventually enters into sampler 15, sampler 15 separates landwaste and core sample, by the mud after separating treatment
It is re-injected into slurry tank 4, forms recycling for mud, and then realize the constantly continuous drilling of circulation and coring.
Air compressor, which passes through, forms gas access between double-wall drill pipe and gas-water mixer, correspond to three shown in Fig. 1
Arrow indicates the direction of air flowing, and mud circulation passage is formed between mud injection pump and gas-water mixer, corresponds to Fig. 1
Shown in single arrow, indicate the direction of mud, gas-water mixer forms access by double-wall drill pipe inner tube and sampler, right
It should indicate to be mixed into the mud flow direction after air in double-head arrow shown in Fig. 1.
For those skilled in the art, it can make other each according to the above description of the technical scheme and ideas
Kind is corresponding to be changed and deforms, and all these change and deform the guarantor that all should belong to the utility model claims
Within the scope of shield.
Claims (5)
1. it is a kind of for deep water without marine riser gas lift reverse circulation drilling well system, it is characterised in that: including slurry injection system and
Gas lift reverse circulation core-drilling system；The slurry injection system includes that sequentially connected cone, flow in pipes, the mud of returning to injects
Pump and slurry tank；The gas lift reverse circulation core-drilling system includes air compressor, air water faucet, double-wall drill pipe mixing wastewater with air
Device and single wall drilling rod, air compressor are connect with the upper end of air water faucet, and the lower end of the gentle tap in the upper end of double-wall drill pipe connects
It connects, the lower end of double-wall drill pipe is connected with the upper end of gas-water mixer, and the lower end of gas-water mixer is connect with single wall drilling rod, the list
Wall drilling rod is connect with core bit, and single wall drilling rod is passed through from the lumen for returning to cone, returns to the inner wall of cone and the outer wall of single wall drilling rod
Between form annular region；Connection is driven in the upper end and top of the air water faucet, and top, which is driven, to be connect by pipeline with sampler, samples
Device is used to store the core sample obtained；It is logical that air compressor passes through formation gas between double-wall drill pipe outer tube and gas-water mixer
Road, forms mud circulation passage between mud injection pump and gas-water mixer, gas-water mixer passes through double-wall drill pipe inner tube and takes
Sampling device forms access.
2. it is according to claim 1 for deep water without marine riser gas lift reverse circulation drilling well system, it is characterised in that: it is described
Flow in pipes is equipped with flow control valve, for controlling the mud pressure and flow of process in flow in pipes.
3. it is according to claim 1 for deep water without marine riser gas lift reverse circulation drilling well system, it is characterised in that: it is described
It returns to cone and is equipped with preventer.
4. it is according to claim 1 for deep water without marine riser gas lift reverse circulation drilling well system, it is characterised in that: it is described
It is equipped with air inlet non-return valve between air compressor and air water faucet, for preventing compressed air reverse flow.
5. it is according to claim 1 for deep water without marine riser gas lift reverse circulation drilling well system, it is characterised in that: it is described
Top, which is driven, to be connect by the interface that top is driven with pipeline, and pipeline is connect with sampler, and top is driven to be equipped with the junction of interface and is used for
The blowout joint for preventing mud from spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820762112.4U CN208294471U (en) | 2018-05-21 | 2018-05-21 | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820762112.4U CN208294471U (en) | 2018-05-21 | 2018-05-21 | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system |
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| Publication Number | Publication Date |
|---|---|
| CN208294471U true CN208294471U (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820762112.4U Expired - Fee Related CN208294471U (en) | 2018-05-21 | 2018-05-21 | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system |
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| CN (1) | CN208294471U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425651A (en) * | 2018-05-21 | 2018-08-21 | 广州海洋地质调查局 | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system and method |
| CN112627753A (en) * | 2020-12-23 | 2021-04-09 | 中煤水文局集团有限公司 | Method for maintaining mud circulation in lost-return stratum |
| CN114876394A (en) * | 2022-04-25 | 2022-08-09 | 西安石油大学 | Recoil reflux buffering device for core collection |
| WO2023070145A1 (en) * | 2021-10-29 | 2023-05-04 | Tri-Tube Drilling Systems Pty Ltd | Drill string and components therefor |
-
2018
- 2018-05-21 CN CN201820762112.4U patent/CN208294471U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425651A (en) * | 2018-05-21 | 2018-08-21 | 广州海洋地质调查局 | It is a kind of for deep water without marine riser gas lift reverse circulation drilling well system and method |
| CN112627753A (en) * | 2020-12-23 | 2021-04-09 | 中煤水文局集团有限公司 | Method for maintaining mud circulation in lost-return stratum |
| CN112627753B (en) * | 2020-12-23 | 2022-05-31 | 中煤水文局集团有限公司 | Method for maintaining mud circulation in lost-return stratum |
| WO2023070145A1 (en) * | 2021-10-29 | 2023-05-04 | Tri-Tube Drilling Systems Pty Ltd | Drill string and components therefor |
| CN114876394A (en) * | 2022-04-25 | 2022-08-09 | 西安石油大学 | Recoil reflux buffering device for core collection |
| CN114876394B (en) * | 2022-04-25 | 2024-04-19 | 西安石油大学 | Backflushing backflow buffer device for core collection |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |