CN1151851C - 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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- CN1151851C CN1151851C CNB011000104A CN01100010A CN1151851C CN 1151851 C CN1151851 C CN 1151851C CN B011000104 A CNB011000104 A CN B011000104A CN 01100010 A CN01100010 A CN 01100010A CN 1151851 C CN1151851 C CN 1151851C
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Abstract
The present invention relates to technology for the harmless treatment of waste petroleum drilling fluid on land, more specifically technology for the harmless treatment of mud fluid generated from well drilling for petroleum exploitation on land. The present invention is characterized in that NO. 1 treating agents and NO. 2 treating agents are respectively added into waste petroleum drilling fluid to be treated, and after treated by adopting the technology of the present invention, effusion, mainly waste water, reaches the V class water quality standard of the national environmental standard GHZB1-1999. If running off, penetrating into formation, or evaporating into air, the waste water is harmless. The water permeability of solid substances losing water is favorable and is not coagulated. The treating result is much better than that of a chemical solidifying method, and the waste water can be safely buried underground. The treating cost is about 100 yuan/ton and is half as large as that of the chemical solidifying method.
Description
The present invention relates to a land discarded petroleum drilling fluid method for innocent treatment.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 the people's concern 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 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 discarded petroleum drilling fluid method for innocent treatment.
Technical scheme of the present invention is: at situ of drilling well, utilize the drilling fluid circulating system and the drilling fluid pot of former rig, the method that discarded petroleum drilling fluid is handled is:
A, all waste petroleum drilling fluid in well site is focused in the drilling fluid pot 3, excavate a gap in the side in this pond, so that drilling fluid flows out, the drilling fluid circulating system with former rig extracts discarded petroleum drilling fluid and is drained into drilling fluid pot 1 from drilling fluid pot 3 when, from then on gap is thrown in No. 1 treatment agent, and the component of No. 1 treatment agent is:
Slag 20% drilling cuttings 5～15%; Consumption is discarded petroleum drilling fluid weight part; Make rejected well drilling liquid and No. 1 treatment agent uniform mixing;
B, again being drawn in the drilling fluid pot 3 through mixed drilling fluid in the drilling fluid pot 1, add No. 2 treatment agents in the exit of drilling fluid pot 1 simultaneously, the component of No. 2 treatment agents is:
Alum 1～10% iron trichloride 2～15%
Polyacrylamide 0.05～0.5% white lime 2～5%
Phosphogypsum 1～3% silicate 2～6%
Consumption is mixed through the recycle system equably for discarded petroleum drilling fluid weight part;
C, at last a part of drilling fluid in the drilling fluid pot 3 is drawn in the drilling fluid pot 1, the level that two ponds are deposited is identical; After parked 2 weeks, isolated moisture content runs off, and solid formation remains in the pond, at last with dozer former excavate out cubic metre of earth, it is buried.
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 inventive method is handled, and 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 a treatment process schematic block diagram 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 1,3, 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, from drilling fluid pot 3, extract useless city drilling fluid simultaneously in drilling fluid circulating system 2 with former rig, from then on gap is thrown in No. 1 treatment agent 4, make rejected well drilling liquid and No. 1 treatment agent 4 uniform mixing fully, after be drained in the drilling fluid pot 1.Being drawn in the drilling fluid pot 3 through mixed drilling fluid in this pond, add No. 2 treatment agents 5 in the exit of drilling fluid pot 1 simultaneously again, mixed equably through the recycle system 2.At last the part in the drilling fluid pot 3 is drawn in the drilling fluid pot 1, the level that two ponds are deposited is identical.After parked 2 weeks, isolating moisture content runs off, and solid formation remains in the pond, at last with dozer former excavate out cubic metre of earth, it is buried.
Here the even appropriateness of the size of the slag particle in No. 1 treatment agent 4, 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 5 is gel breaker, sorbent material and heavy metal ion precipitation agent, and its composition and content can suitably be allocated according to processed discarded petroleum drilling fluid.
Claims (2)
1, a kind of land discarded petroleum drilling fluid method for innocent treatment is characterized in that:
A, all waste petroleum drilling fluid in well site is focused in the drilling fluid pot (3), excavate a gap in the side in this pond, so that drilling fluid flows out, the drilling fluid circulating system (2) with former rig extracts discarded petroleum drilling fluid and is drained into drilling fluid pot (1) from drilling fluid pot (3) when, from then on gap is thrown in No. 1 treatment agent (4), and the component of No. 1 treatment agent (4) is:
Slag 20% drilling cuttings 5～15%; Consumption is discarded petroleum drilling fluid weight part; Make rejected well drilling liquid and No. 1 treatment agent (4) uniform mixing;
B, again being drawn in the drilling fluid pot (3) through mixed drilling fluid in the drilling fluid pot (1), add No. 2 treatment agents (5) in the exit of drilling fluid pot (1) simultaneously, the component of No. 2 treatment agents (5) is:
Bright 1～10% iron trichloride 2～15%
Polyacrylamide 0.05～0.5% white lime 2～5%
Phosphogypsum 1～3% silicate 2～6%
Brownization coal 3～6%;
Consumption is mixed through the recycle system equably for discarded petroleum drilling fluid weight part;
C, at last a part of drilling fluid in the drilling fluid pot (3) is drawn in the drilling fluid pot (1), the level that Liang Chizhong is deposited is identical; After parked 2 weeks, isolated moisture content runs off, and solid formation remains in the pond, at last with dozer former excavate out cubic metre of earth, it is buried.
2, land discarded petroleum drilling fluid method for innocent treatment according to claim 1 is characterized in that the drilling fluid circulating system (2) with former rig makes discarded petroleum drilling fluid mix equably with No. 1 treatment agent (4) and No. 2 treatment agents (5).
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 CN1307913A (en) | 2001-08-15 |
| CN1151851C true CN1151851C (en) | 2004-06-02 |
Family
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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) |
Families Citing this family (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 |
| CN106561334B (en) * | 2016-11-08 | 2020-10-13 | 中国石油大学(北京) | Drilling solid-phase waste treatment 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 |
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2001
- 2001-01-02 CN CNB011000104A patent/CN1151851C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1307913A (en) | 2001-08-15 |
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