CN102485666A - Technology of in situ harmless treatment on waste drilling mud - Google Patents
Technology of in situ harmless treatment on waste drilling mud Download PDFInfo
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- CN102485666A CN102485666A CN2010105756905A CN201010575690A CN102485666A CN 102485666 A CN102485666 A CN 102485666A CN 2010105756905 A CN2010105756905 A CN 2010105756905A CN 201010575690 A CN201010575690 A CN 201010575690A CN 102485666 A CN102485666 A CN 102485666A
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Abstract
The invention discloses a technology of in situ harmless treatment on waste drilling mud. A technical scheme is as below: based on a solid-liquid separation-solidification technology, land treatment is introduced to realize reutilization. First, solid-liquid separation is carried out; separated water is filtered by soil, and the filtered water can be used for producing cement mortar or concrete during well site standardization construction; filtered loess returns to a mud pool, uniformly stirred with slurry treated with solid-liquid separation and treated with solidification landfill. The invention has characteristics of low cost, good treatment effect and simple operation.
Description
Technical field
The present invention relates to a kind of drilling mud harmless treating process method.
Background technology
Oil and natural gas exploration and development process can produce a large amount of pollutents, and waste drilling mud is one of principal pollutant, and it is the polynomial gel suspension system of a kind of argillaceous, high-density weighting material, various chemical processing agent, sewage, sump oil and drilling cuttings.From Environmental indicators, its principal pollutant are organism, suspended substance, soda acid thing, oils and heavy metal.If do not adopt appropriate means to handle, will cause great harm to environment.
At present, both at home and abroad the waste drilling mud treatment technology mainly contains: the simple process discharging, inject safe formation or well annular space, focus on, sealing in the backfill, hole, soil cultivating, curing, solid-liquid separation, burning, microbiological treatment etc.From available data, both at home and abroad waste mud is generally all carried out earlier to solidify and dispose, and then do comprehensive utilization.But the water ratio of waste drilling mud is high, generally 80%～90%, thereby need at first carry out solid-liquid separation, and then settling is done solidification treatment.
Flocculation-settling process is present each oilfield treatments drilling mud solid-liquid separating method commonly used, through in waste drilling mud, adding appropriate coagulant, lets thinner particle produce coalescence, makes it under gravity or mechanical assistance separation condition, realize solid-liquid separation.Flocculation-settling process technology is simple, flexible, to suspended substance, colloidalmaterial clearance height.Under rational technical qualification, can in solid-liquid separation, be converted into the less innoxious substance of hazardness to the oxious component in the waste mud, also significantly reduced the volume of thickness waste mud simultaneously, reduced the intractability of solid phase waste.
The solidification treatment method is to show to drop into solidifying agent in the drilling waste mud, makes it be converted into soil or the bigger cured body of consolidation strength, then landfill or as material of construction etc. on the spot.This method is considered to the method that a kind of reliable improvement drilling well discarded slurry pollutes; High for noxious concentration content such as CODcr, pH value and total chromium; The drilling waste mud that intractability is big is handled the most effective; Handle the back its cured article is soaked the poison experiment, the result shows that leach liquor contamination index can reach integrated wastewater discharge standard.
At present, the problem of this method existence is: the supernatant Pollutant levels after (1) solid-liquid separation are very high, can not discharge on the spot, need transport to specific position to supernatant and focus on, and transportation cost and processing cost are very high; (2) cause water resource waste, stdn and greening also will be done in the well site after the mud harmless treatment, and these all need water.
Summary of the invention
Not enough to existing in prior technology, the purpose of this invention is to provide a kind of process method that is used for the harmless treatment of waste drilling mud original position, and can carry out reuse the water after handling, both practiced thrift resource, created value.
The objective of the invention is to realize through following technical scheme:
On the basis of solid-liquid separation-curing process, introduce the soil and handle, make it reach the purpose of reuse.At first carry out solid-liquid separation, the water after the separation filters with soil, and the water after the filtration is used for making cement mortar or concrete when doing the well site stdn; Loess after the filtration returns and is cured landfill after mud after suction pit and the solid-liquid separation stirs.
The present invention compared with prior art has following advantage and high-lighting effect:
(1) cost is low: in-situ treatment, need not use equipment for separating liquid from solid, and saved transportation cost; The employing soil is handled, and processing costs is low.
(2) treatment effect is good: according to experiment, the water quality after the processing meets sand-cement slurry or concrete requirement fully.
(3) easy and simple to handle: technology is simple, and has suffered treating processes and need not use complicated mechanical and equipment.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below through embodiment, and combine its accompanying drawing, this programme is set forth.
The plastic cloth in shop, ground, well site, plastic cloth has certain gradient.Water reservoir is dug in lower end at plastic cloth, and the volume in pond is according to the volume decision of water in the drilling mud.The soil that digs out is deposited on the plastic cloth, does concavity at the top.In the drilling mud pond, add gel breaker, gel breaker can select for use inorganic coagulant, organic coagulating agent or inorganic organic collocation to use, and like iron trichloride, Poly aluminum Chloride (PAC), SEPIGEL 305 etc., dosage is confirmed according to test in place.After medicament adds, need to stir, make medicament and water thorough mixing, improve solid-liquid separation effect; Can adopt excavator or water pump to stir.It is static to stir the back, with pump supernatant is risen to soil heap body after the solid-liquid separation and carries out the soil filtration.Water after the filtration flows into water reservoir, is used for making cement mortar or concrete, and after water used up, water reservoir can be reconstructed the waste oil pool of marching into the arena for stdn.Remaining mud was cured processing together after loess after the filtration returned suction pit and solid-liquid separation.During solidification treatment, add solidifying agent earlier, the usage mining machine stirs then, earthing landfill behind the curing conservation.The dosage of solidifying agent is confirmed according to field experiment.
Claims (5)
1. the method for waste drilling mud original position harmless treatment is characterized in that: on the basis of solid-liquid separation-curing process, introduce the soil and handle, make it reach the purpose of reuse.At first carry out solid-liquid separation, the water after the separation filters with soil, and the water after the filtration is used for making cement mortar or concrete when doing the well site stdn; Loess after the filtration returns and is cured landfill after mud after suction pit and the solid-liquid separation stirs.
2. according to right 1 desired solid-liquid separation, it is characterized in that: in the drilling mud pond, add gel breaker, stir then.
3. according to right 1 desired curing, it is characterized in that: add solidifying agent, the usage mining machine stirs then.
4. according to right 2 desired gel breakers, it is characterized in that: can adopt inorganic coagulant, organic coagulating agent or inorganic organic collocation to use, as like iron trichloride, Poly aluminum Chloride (PAC), SEPIGEL 305 etc.
5. according to right 3 desired solidifying agent, it is characterized in that: can adopt special slurry curing agent, also can adopt flyash, loess, cement, lime mixed preparing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105756905A CN102485666A (en) | 2010-12-02 | 2010-12-02 | Technology of in situ harmless treatment on waste drilling mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105756905A CN102485666A (en) | 2010-12-02 | 2010-12-02 | Technology of in situ harmless treatment on waste drilling mud |
Publications (1)
| Publication Number | Publication Date |
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| CN102485666A true CN102485666A (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105756905A Pending CN102485666A (en) | 2010-12-02 | 2010-12-02 | Technology of in situ harmless treatment on waste drilling mud |
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| CN (1) | CN102485666A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253839A (en) * | 2013-04-01 | 2013-08-21 | 德州联合石油机械有限公司 | Harmless reinjection treatment method for petroleum exploitation sludge |
| CN103351091A (en) * | 2013-07-18 | 2013-10-16 | 中国石油化工股份有限公司 | Process for treating waste well slurry with fly ash |
| CN105295939A (en) * | 2015-10-23 | 2016-02-03 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Curing agent for petroleum drilling clean production and preparing method of curing agent |
| CN105776780A (en) * | 2016-03-07 | 2016-07-20 | 南京乾庚新材料科技有限公司 | Shale gas well drilling waste-oil-based mud curing material |
| CN107082500A (en) * | 2017-04-14 | 2017-08-22 | 安徽省华鑫铅业集团有限公司 | The not outer row's self-cleaning reclaiming system of leaded reclaimed water |
| CN110903016A (en) * | 2019-11-01 | 2020-03-24 | 四川格英达环保科技有限公司 | Drilling water-based mud drying agent |
| CN112062542A (en) * | 2020-08-31 | 2020-12-11 | 杨明儒 | Building material product made of drilling solid waste |
-
2010
- 2010-12-02 CN CN2010105756905A patent/CN102485666A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253839A (en) * | 2013-04-01 | 2013-08-21 | 德州联合石油机械有限公司 | Harmless reinjection treatment method for petroleum exploitation sludge |
| CN103351091A (en) * | 2013-07-18 | 2013-10-16 | 中国石油化工股份有限公司 | Process for treating waste well slurry with fly ash |
| CN105295939A (en) * | 2015-10-23 | 2016-02-03 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Curing agent for petroleum drilling clean production and preparing method of curing agent |
| CN105776780A (en) * | 2016-03-07 | 2016-07-20 | 南京乾庚新材料科技有限公司 | Shale gas well drilling waste-oil-based mud curing material |
| CN107082500A (en) * | 2017-04-14 | 2017-08-22 | 安徽省华鑫铅业集团有限公司 | The not outer row's self-cleaning reclaiming system of leaded reclaimed water |
| CN107082500B (en) * | 2017-04-14 | 2020-01-17 | 安徽省华鑫铅业集团有限公司 | Lead-containing reclaimed water self-purification recycling system without external discharge |
| CN110903016A (en) * | 2019-11-01 | 2020-03-24 | 四川格英达环保科技有限公司 | Drilling water-based mud drying agent |
| CN112062542A (en) * | 2020-08-31 | 2020-12-11 | 杨明儒 | Building material product made of drilling solid waste |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Shaanxi Haoding Dexin Environmental Protection Technology Co.,Ltd. Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120606 |