CN1307913A - Land innocuous treatment technology for waste drilling fluid of oil well - Google Patents
Land innocuous treatment technology for waste drilling fluid of oil well Download PDFInfo
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- CN1307913A CN1307913A CN 01100010 CN01100010A CN1307913A CN 1307913 A CN1307913 A CN 1307913A CN 01100010 CN01100010 CN 01100010 CN 01100010 A CN01100010 A CN 01100010A CN 1307913 A CN1307913 A CN 1307913A
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- drilling fluid
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Abstract
The innocuous treatment of the waste petroleum drilling mud is characterized by that the treatment agent No.2 and treatment agent No.2 are respectively added in waste drilling mud, and after having been treated by invented technology, the diffusate whose main component is waste water can meet the V-type water quality standard defined in GH2B1-1999, and the waste water which is lost or infiltrated into ground or evaporated in the air is harmless, and the water-lost solid material also possesses good water permeability, and does not harden. Its treated result is incomparable with that of chemical solidification process, if it is embedded in the ground, it is safe and reliable, and its treatment cost is half of treatment cost of chemical solidification process.
Description
The present invention relates to a land innocuous treatment technology for waste drilling fluid of oil well.Be that the mud that produces in the land oil production well-digging is carried out harmless treatment specifically, make it reach environmental requirement.
Along with the development of petroleum industry, the oil well of exploration and exploitation is more and more, and the discarded petroleum drilling fluid of generation more and more causes people's attention to the influence of environment, and this drilling fluid is divided into water base and oil base two big classes.Water base class drilling fluid is one of waste that has greater environmental impacts in the petroleum prospecting recovery process, and its main pollutant component is: heavy metal chromium, mercury, cadmium and lead etc.; Petroleum-type; Chemical oxygen demand (COD) (COD) and colourity exceed standard.It is discarded in the well site stores the hole, and what be the solid phase colloidal accounts for 20～30%, about 100～500 cubic metres of volume, and 1～2 meter of the degree of depth in hole.If do not handle, this colloid of sticking with paste as thin pulp can reach more than 10 years and dehydration hardly, and people, animal and mechanical means are fallen into the interior danger close in hole; Flow into farmland, river and infiltration stratum, contaminate environment influences the animal and plant growth, jeopardizes people's health and safety.
The processing of at present discarded petroleum drilling fluid all is after drill crew withdraws, and is handled by professional contingent, and its method has backfill method, solid-liquid isolation method and chemosetting method etc.Modal is the chemosetting method, and it is that solidify material such as cement, thermosetting resin are directly mixed in the depleted drilling fluid, stirs the companion and makes its thorough mixing, places several days to tens days, and promptly sclerosis is buried with it then.It has prevented the pollution to environment basically, but this treatment process need be used a lot of equipment, and the solidify material of adding is many, and workload is big, and material after curing caking and hard still has certain destruction to environment, and 200 yuan per ton approximately of the cost of handling.
The objective of the invention is in order to utilize existing installation reduction processing cost on the rig, the protection environment is studied a kind of at the scene to land innocuous treatment technology for waste drilling fluid of oil well.
Technical scheme of the present invention is: at the rig scene, utilize the drilling fluid circulating system of former rig and the recycle system that drilling fluid pot is formed discarded petroleum drilling fluid, rejected well drilling liquid is handled.And in processing, add No. 1 treatment agent and No. 2 treatment agents respectively, they consist of: No. 1 treatment agent: (consumption is discarded petroleum drilling fluid weight part)
1-slag 20% 2-drilling cuttings 5～15%
No. 2 treatment agents: (consumption is discarded petroleum drilling fluid weight part)
1-alum 1～10% 2-iron trichloride 2～15%
3-polyacrylamide 0.05～0.5% 4-white lime 2～5%
5-phosphogypsum 1～3% 6-silicate 2～6%
Brownization of 7-coal 3～6%
Discarded petroleum drilling fluid to transudate, mainly is that the survey of picking up of waste water meets V class water quality standard among the state environment protecting standard GHZB1-1999 after the technology of the present invention is handled.Loss or infiltration stratum or evaporation are all harmless in air; And lose moisture content solid formation water-permeable might as well, do not harden, be that chemosetting method result can't be compared, it is reliable fully to be buried in subsurface.About 100 yuan/ton of processing cost is half of chemosetting method.
Fig. 1 is the schematic block diagram for the treatment of processes of the present invention.Among the figure 1, the 3-drilling fluid pot, the drilling fluid circulating system of the former rig of 2-, 4-1 treatment agent, 5-2 treatment agent.
Below in conjunction with accompanying drawing the present invention is done further narration.
Usually drilling well site has two hand excavations' drilling fluid pot, in order to allocate and to deposit drilling fluid.Drilling fluid circulating system and drilling well well head by rig link, and are used for keeping creeping into of rig during exploitation.Drilling well finishes, and drilling fluid is then discarded in the drilling well pond.Before drill crew and rig are withdrawn, with the drilling fluid circulating system of former rig, the recycle system when handling as discarded petroleum drilling fluid.
At first all waste drilling fluid with the well site focuses in the drilling fluid pot (3), excavate a gap in the side in this pond, so that rejected well drilling liquid flows out, when the drilling fluid circulating system (2) with former rig extracts rejected well drilling liquid from pond (3), from then on gap is thrown in No. 1 treatment agent (4), both uniform mixing fully like this, after be drained in the drilling fluid pot (1).Being drawn in the pond (3) through mixed drilling fluid in pond (1), the exit of (1) adds No. 2 treatment agents (5) in the pond simultaneously, is mixed equably through the recycle system (2) again.At last the part in pond (3) is drawn in the pond (1), the level that Liang Chizhong is deposited is identical.Left alone without help put for 2 weeks after, isolated moisture content runs off, solid formation remains in the pond, at last with dozer former excavate out cubic metre of earth, it is buried.
Here the slag thick little even appropriateness in No. 1 treatment agent, drilling cuttings are exactly the particulate material of stone of producing in the drilling process and so on, it need be filtered out when creeping into, and at this moment will it throw in into, and they play the skeleton adsorption.Material in No. 2 treatment agents is gel breaker, sorbent material and heavy metal ion precipitation agent, and its composition and content can be done suitable allotment according to processed drilling fluid.
Claims (2)
1. land innocuous treatment technology for waste drilling fluid of oil well is characterized in that handling in the discarded petroleum drilling fluid and adds No. 1 treatment agent and No. 2 treatment agents respectively, they consist of:
No. 1 treatment agent: (consumption is discarded petroleum drilling fluid weight part) 1-slag 20% 2-drilling cuttings 5～15%
No. 2 treatment agents: (consumption is discarded petroleum drilling fluid weight part) brownization of 1-alum 1～10% 2-iron trichloride 2～15%3-polyacrylamide 0.05～0.5% 4-white lime 2～5%5-phosphogypsum 1～3% 6-silicate 2～6%7-coal 3～6%
2. want the first evilization treatment technology of the land discarded petroleum drilling fluid of 1 art of art according to right, it is characterized in that the drilling fluid circulating system (2) with former rig can make rejected well drilling liquid mix equably with No. 1 treatment agent and No. 2 treatment agents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011000104A CN1151851C (en) | 2001-01-02 | 2001-01-02 | Land innocuous treatment technology for waste drilling fluid of oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011000104A CN1151851C (en) | 2001-01-02 | 2001-01-02 | Land innocuous treatment technology for waste drilling fluid of oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1307913A true CN1307913A (en) | 2001-08-15 |
| CN1151851C CN1151851C (en) | 2004-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011000104A Expired - Fee Related CN1151851C (en) | 2001-01-02 | 2001-01-02 | Land innocuous treatment technology for waste drilling fluid of oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1151851C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457849C (en) * | 2006-10-16 | 2009-02-04 | 大庆油田有限责任公司 | Environment-friendly curing agent for waste well completion fracturing fluid |
| CN101955235A (en) * | 2010-05-14 | 2011-01-26 | 北京奥凯立科技发展股份有限公司 | Curing agent for treating waste drilling fluid |
| CN106561334A (en) * | 2016-11-08 | 2017-04-19 | 中国石油大学(北京) | Well drilling solid-phase waste disposal composition and application thereof |
| CN116854450A (en) * | 2023-03-15 | 2023-10-10 | 四川省建材工业科学研究院有限公司 | Activating treatment agent for preparing sintered insulating bricks from water-based drilling cuttings |
-
2001
- 2001-01-02 CN CNB011000104A patent/CN1151851C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457849C (en) * | 2006-10-16 | 2009-02-04 | 大庆油田有限责任公司 | Environment-friendly curing agent for waste well completion fracturing fluid |
| CN101955235A (en) * | 2010-05-14 | 2011-01-26 | 北京奥凯立科技发展股份有限公司 | Curing agent for treating waste drilling fluid |
| CN106561334A (en) * | 2016-11-08 | 2017-04-19 | 中国石油大学(北京) | Well drilling solid-phase waste disposal composition and application thereof |
| CN116854450A (en) * | 2023-03-15 | 2023-10-10 | 四川省建材工业科学研究院有限公司 | Activating treatment agent for preparing sintered insulating bricks from water-based drilling cuttings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1151851C (en) | 2004-06-02 |
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