CN211500565U - Offshore oilfield water-based drilling fluid circulation treatment system - Google Patents
Offshore oilfield water-based drilling fluid circulation treatment system Download PDFInfo
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- CN211500565U CN211500565U CN202020026742.2U CN202020026742U CN211500565U CN 211500565 U CN211500565 U CN 211500565U CN 202020026742 U CN202020026742 U CN 202020026742U CN 211500565 U CN211500565 U CN 211500565U
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Abstract
The utility model relates to a marine oil field water base drilling fluid circulation processing system, it mainly comprises shale shaker, desander, desliming ware, centrifuge, auger delivery ware, plate and frame pressure filter, drilling fluid agitator tank, solid phase dosing tank, liquid phase dosing tank, grinding pump, classifying screen, joining in marriage thick liquid jar, injection pump etc.. The drilling fluid is subjected to solid-liquid separation through a vibrating screen, a sand remover, a mud remover, a centrifugal machine and a plate-and-frame filter press. And (3) the separated drilling fluid enters a drilling fluid stirring tank, the dosage is controlled by using a weighing sensor and a flow sensor, the performance of the drilling fluid is adjusted by using a solid-phase dosage tank and a liquid-phase dosage tank, and the adjusted drilling fluid is recycled. And (4) feeding the separated rock debris into a grinding pump, screening coarse-particle rock debris by using a grading screen, grinding again, preparing slurry from fine-particle rock debris, and finally reinjecting. The utility model discloses guaranteed that offshore oil field drilling fluid does not fall to the ground circulation and handles, realized being favorable to the environmental protection and practicing thrift the drilling cost to the zero release of discarded object.
Description
Technical Field
The utility model relates to a marine oil field water base drilling fluid circulation processing system is applicable to marine oil field water base drilling fluid and does not fall to the ground, zero release circulation processing.
Background
Drilling fluids are an important component of the drilling process. Its main functions in drilling well include carrying rock debris, balancing stratum pressure, cooling and lubricating drill bit, protecting well wall, transmitting hydraulic power and providing stratum data. However, with the increasing prominence of environmental issues, the problem of pollution of drilling fluids is currently receiving much attention. Researchers have made a lot of research aiming at the problems of solid phase control of drilling fluid and treatment of waste rock debris. Especially in offshore oil fields, it is more difficult to ensure the recycling of drilling fluid and the pollution-free treatment technology of rock debris. If not properly handled, damage to the environment can occur, severely increasing drilling costs.
At present, the main offshore rock debris treatment method is to transport the rock debris back to land for treatment, and the method is not only expensive, but also has long time for treating the rock debris. Furthermore, the cuttings transported back to land are often disposed of in a landfill which is not environmentally friendly.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is in order to make the better recycling of offshore oil field water base drilling fluid, adopts multistage solid accuse equipment to make the detritus content in the drilling fluid reach the minimum to adopt detritus reinjection system to pour into the detritus into the underground and make the drilling fluid circulation in-process realize the zero release. The utility model discloses not only practice thrift the drilling cost to be favorable to the protection to the environment.
The utility model adopts the technical proposal that:
the utility model relates to a marine oil field water base drilling fluid circulation processing system mainly comprises shale shaker, desander, desliming ware, centrifuge, auger delivery ware, plate and frame filter press, drilling fluid agitator tank, solid phase dosing tank, liquid phase dosing tank, grinding pump, classifying screen, the jar of joining in marriage thick liquid, injection pump, weighing sensor and flow sensor. The vibrating screen, the sand remover, the mud remover and the liquid phase outlet of the centrifugal machine are sequentially connected, and the solid phase outlet is connected with the spiral conveyor. The spiral conveyer, the plate-and-frame filter press, the grinding pump, the slurry preparation tank and the injection pump are sequentially connected. The plate-and-frame filter press and the liquid phase outlet of the centrifuge are connected with a drilling fluid stirring tank, and the inlet of the drilling fluid stirring tank is connected with the outlets of the solid phase dosing tank and the liquid phase dosing tank.
Furthermore, a proper amount of flocculating agent needs to be added before the drilling fluid enters the centrifugal machine, so that rock debris particles below the separation point of the centrifugal machine are agglomerated and separated again, the use efficiency of the centrifugal machine is increased, and the rock debris content in the drilling fluid is minimized.
Furthermore, a weighing sensor is arranged below the outlet valve of the solid-phase dosing tank, a flow sensor is arranged below the outlet valve of the liquid-phase dosing tank, the dosing amount of the drilling fluid is accurately controlled according to the weighing sensor and the flow sensor, and the performance of the drilling fluid in the circulation process of the drilling fluid is ensured to accurately meet the design requirement of drilling.
Furthermore, a grading sieve is connected between the grinding pump and the slurry preparation tank, the grading sieve selects a screen with 50 meshes, the particle size of rock debris is controlled, the rock debris can be conveniently and smoothly injected into the ground, and zero emission in the drilling process is realized.
The utility model has the advantages that: the offshore oilfield water-based drilling fluid can be subjected to non-landing and zero-emission cyclic treatment, so that the environment is protected, and the drilling cost is saved.
Drawings
Figure 1 is the utility model discloses a marine water base drilling fluid circulation processing system schematic diagram.
In the figure: 1. the system comprises a vibrating screen, 2 parts of a sand remover, 3 parts of a mud remover, 4 parts of a centrifuge, 5 parts of a spiral conveyer, 6 parts of a plate-and-frame filter press, 7 parts of a drilling fluid stirring tank, 8 parts of a solid phase dosing tank, 9 parts of a liquid phase dosing tank, 10 parts of a grinding pump, 11 parts of a grading screen, 12 parts of a slurry preparation tank, 13 parts of an injection pump, 14 parts of a weighing sensor and 15 parts of a flow sensor.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the utility model relates to a marine oil field water base drilling fluid circulation processing system mainly comprises shale shaker 1, desander 2, desliming ware 3, centrifuge 4, auger delivery ware 5, plate and frame filter press 6, drilling fluid agitator tank 7, solid phase dosing tank 8, liquid phase dosing tank 9, grinding pump 10, classifying screen 11, join in marriage thick liquid jar 12, injection pump 13, weighing sensor 14 and flow sensor 15.
The drilling fluid which is returned from the wellhead firstly passes through a vibrating screen 1, wherein the vibrating screen 1 adopts a linear motion vibrating screen and 200-mesh screen cloth, so that rock debris particles with the particle size of more than 74 microns in the drilling fluid can be separated.
The drilling fluid treated by the vibrating screen 1 enters a sand remover 2, and the main separation point of the sand remover 2 is rock debris particles with the particle size of more than 60 mu m.
The drilling fluid treated by the sand remover 2 enters a mud remover 3, and the mud remover 3 mainly separates rock debris particles with the particle size larger than 12 microns. The drilling fluid treated by the mud remover 3 enters the centrifuge 4 after being added with the flocculating agent, so that rock debris particles lower than the separation point of the centrifuge are agglomerated and separated again, and the separation efficiency of the centrifuge 4 is improved. The centrifugal machine 4 is a high-speed centrifugal machine, the rotating drum rotating speed of the centrifugal machine 4 is 1500-3500 r/min, and rock debris particles with the particle size larger than 3 microns in the drilling fluid are mainly separated.
The separated rock debris has the drilling fluid on the surface, and the drilling fluid on the surface of rock debris particles must be removed, so the rock debris separated by the vibrating screen 1, the desander 2, the mud remover 3 and the centrifuge 4 needs to enter the plate-and-frame filter press 6 through the screw conveyor 5, and the drilling fluid on the surface of the rock debris can be effectively cleaned through the plate-and-frame filter press 6.
The drilling fluid separated by the centrifuge 4 and the plate-and-frame filter press 6 enters a drilling fluid stirring tank 8, and the density, rheological property, filtration wall building property and the like of the drilling fluid are adjusted by a solid phase dosing tank 8 and a liquid phase dosing tank 9. And the dosage is accurately controlled by using the weighing sensor 14 and the flow sensor 15, so that the performance of the drilling fluid meets the requirements of drilling engineering.
The rock debris treated by the plate and frame filter press 6 enters a grinding pump 10, and the particle size of rock debris particles is smaller than 300 mu m through the grinding pump 10. The rock debris processed by the grinding pump 10 passes through a grading sieve 11(50 meshes), wherein the rock debris larger than 300 mu m continuously returns to the grinding pump 10, the rock debris particles smaller than 300 mu m pass through a slurry distribution tank 12, the rock debris meeting the requirements enter the slurry distribution tank 12 for slurry distribution, and finally the rock debris is injected underground through an injection pump 13, so that zero emission in the drilling process is realized.
Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides an offshore oil field water base drilling fluid circulation processing system which characterized in that: mainly comprises a vibrating screen (1), a sand remover (2), a mud remover (3), a centrifuge (4), a spiral conveyer (5), a plate-and-frame filter press (6), a drilling fluid stirring tank (7), a solid phase dosing tank (8), a liquid phase dosing tank (9), a grinding pump (10), a grading screen (11), a slurry preparation tank (12), an injection pump (13), a weighing sensor (14) and a flow sensor (15); the device is characterized in that liquid phase outlets of the vibrating screen (1), the sand remover (2), the mud remover (3) and the centrifuge (4) are sequentially connected, a solid phase outlet is connected with the spiral conveyer (5), the plate-and-frame filter press (6), the grinding pump (10), the slurry preparation tank (12) and the injection pump (13) are sequentially connected, liquid phase outlets of the plate-and-frame filter press (6) and the centrifuge (4) are connected with the drilling fluid stirring tank (7), and an inlet of the drilling fluid stirring tank (7) is connected with an outlet of the solid phase dosing tank (8) and an outlet of the liquid phase dosing tank (9).
2. The offshore oilfield water-based drilling fluid circulation treatment system of claim 1, wherein: a proper amount of flocculating agent can be added before the centrifugal machine (4) to ensure that rock debris particles lower than the separation point of the centrifugal machine (4) are agglomerated and then separated, thereby improving the separation efficiency of the centrifugal machine (4) and ensuring that the rock debris content in the drilling fluid is the lowest.
3. The offshore oilfield water-based drilling fluid circulation treatment system of claim 1, wherein: a weighing sensor (14) is arranged below an outlet valve of the solid-phase dosing tank (8), a flow sensor (15) is arranged below an outlet valve of the liquid-phase dosing tank (9), the dosing amount of the drilling fluid is accurately controlled according to the weighing sensor (14) and the flow sensor (15), and the performance of the drilling fluid in the circulation process of the drilling fluid is guaranteed to accurately meet the design requirements.
4. The offshore oilfield water-based drilling fluid circulation treatment system of claim 1, wherein: a grading sieve (11) is connected between the grinding pump (10) and the slurry preparation tank (12), and a 50-mesh screen is selected by the grading sieve (11) to control the particle size of rock debris, so that the rock debris can be conveniently and smoothly injected into the underground, and zero emission in the drilling process is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026742.2U CN211500565U (en) | 2020-01-07 | 2020-01-07 | Offshore oilfield water-based drilling fluid circulation treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020026742.2U CN211500565U (en) | 2020-01-07 | 2020-01-07 | Offshore oilfield water-based drilling fluid circulation treatment system |
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| Publication Number | Publication Date |
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| CN211500565U true CN211500565U (en) | 2020-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020026742.2U Expired - Fee Related CN211500565U (en) | 2020-01-07 | 2020-01-07 | Offshore oilfield water-based drilling fluid circulation treatment system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653452A (en) * | 2021-09-09 | 2021-11-16 | 中国石油大学(北京) | Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof |
| CN113818825A (en) * | 2021-10-13 | 2021-12-21 | 四川宏华石油设备有限公司 | Unmanned intelligent solid phase control system |
| CN114682362A (en) * | 2022-04-26 | 2022-07-01 | 中国海洋石油集团有限公司 | Rock debris reinjection system and method |
| CN115059421A (en) * | 2022-06-14 | 2022-09-16 | 中国海洋石油集团有限公司 | Automatic slurry preparation control system and control method thereof |
-
2020
- 2020-01-07 CN CN202020026742.2U patent/CN211500565U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653452A (en) * | 2021-09-09 | 2021-11-16 | 中国石油大学(北京) | Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof |
| CN113818825A (en) * | 2021-10-13 | 2021-12-21 | 四川宏华石油设备有限公司 | Unmanned intelligent solid phase control system |
| CN114682362A (en) * | 2022-04-26 | 2022-07-01 | 中国海洋石油集团有限公司 | Rock debris reinjection system and method |
| CN114682362B (en) * | 2022-04-26 | 2023-09-29 | 中国海洋石油集团有限公司 | Rock debris reinjection system and method |
| CN115059421A (en) * | 2022-06-14 | 2022-09-16 | 中国海洋石油集团有限公司 | Automatic slurry preparation control system and control method thereof |
| CN115059421B (en) * | 2022-06-14 | 2023-06-16 | 中国海洋石油集团有限公司 | Automatic slurry preparation control system and control method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20220107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |