CN100523113C - Oil gas field waste drilling fluid drill chip innocent treatment agent and method - Google Patents
Oil gas field waste drilling fluid drill chip innocent treatment agent and method Download PDFInfo
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- CN100523113C CN100523113C CNB2007100181558A CN200710018155A CN100523113C CN 100523113 C CN100523113 C CN 100523113C CN B2007100181558 A CNB2007100181558 A CN B2007100181558A CN 200710018155 A CN200710018155 A CN 200710018155A CN 100523113 C CN100523113 C CN 100523113C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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Abstract
The invention discloses an innocent treatment additive of drill chip of waste oil gas drilling liquid, which comprises the following parts: solid additive and liquid additive, wherein the liquid additive is composed of 45-47% magnesium chloride, 45-47% calcium chloride and 6-10% polyaluminium chloride; the solid additive contains 60-70% coal ash and 30-40% phosphate fertilizer. The invention adsorbs and solidifies the harmful organics and heavy metal ion to neutralize alkaline of drilling liquid, which reduces the cost to fit for waste water-based and oil-based drilling liquid.
Description
Technical field
The present invention relates to a kind of oil gas field waste drilling fluid drill chip innocent treatment agent and treatment process, the drilling well waste emissions is handled, make it reach environmental requirement.
Background technology
Contain a large amount of toxic substances in waste drilling fluid and the drilling cuttings, its main component is modifier, oils, high pH value and heavy metal salts (as mercury, arsenic, chromium, cadmium, lead etc.) etc. such as impurity in hydro carbons, salt, each base polymer, the barite and pitch, is the serious environmental source of pollution.At present, the method that the oil drilling waste emissions mainly adopts direct Tu Chi stacking, natural air drying, buries with soil, serious environment pollution.Domestic for this reason each oil field is all paid huge effluent charge every year, is taken country's tens of hectares of ploughing simultaneously.Therefore physical environment and company interest all are subjected to tremendous influence.Along with in the national Eleventh Five-Year Plan to the strict demand of environment protection, and the HSE system is the popularizing of field of petroleum exploitation, the harmless treatment of waste drilling fluid drilling cuttings rises to a new high, and important practical sense is arranged.
Processing for the waste drilling fluid drilling cuttings, domesticly carried out certain exploration and research, formed multinomial achievement and patent, but no matter be to consider from experimental technique and treatment effect or from real cost, certain limitation is all arranged, be not suitable for the needs of environmental protection and mud online treatment.Domestic the most frequently used treatment process mainly is following several at present: seal in curing, solid-liquid separation, injection safe formation, the hole etc.The shortcoming of this several method is mainly: (1) processing costs height, and the treatment agent consumption is big; (2) still occupy cultivated land; (3) still there are pollution hidden trouble in soil or underground water; (4) need to handle repeatedly, the treatment time is long, is unfavorable for open-air industrial application; (5) these methods can only be applied in a kind of in water base or the oil base drilling fluid, can not be applicable to two kinds of drilling fluids simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of with low cost, economic and practical, can be applied to water basely and oil base simultaneously, be fit to oil gas field waste drilling fluid drill chip innocent treatment agent and the treatment process that use in the industrialization field on the spot.
For achieving the above object, the technical solution used in the present invention is:
The oil gas field waste drilling fluid drill chip innocent treatment agent, its special character is: be made up of solid processing agent and liquid treating agent, liquid treatment agent is made by the raw material of the solid state of following weight proportioning,
Magnesium chloride 45～47% calcium chloride 45～47% polymerize aluminum chlorides 6～10%;
Solid-state treatment agent is made by following materials of weight proportions,
Flyash 60～70% phosphate fertilizer 30～40%.
The solid state usage quantity of above-mentioned liquid treatment agent is the 4%-15% of waste drilling fluid drilling cuttings weight.
The usage quantity of above-mentioned solid processing agent is the 4%-15% of waste drilling fluid drilling cuttings weight.
The step of above-mentioned oil gas field waste drilling fluid drill chip innocent treatment process is as follows:
(1) at first needs the waste drilling fluid drilling cuttings is once measured, draw its pollution level, determine the adding proportion of the treatment agent of needs in the actual innoxious process according to this pollution level by mensuration;
(2) determined adding proportion after, with the waste drilling fluid drilling cuttings by the slush pump in the drilling well recycle system, a certain amount of waste drilling fluid drilling cuttings is extracted in the mud tank, weight and treatment agent adding proportion according to the waste drilling fluid drilling cuttings determines the liquid treating agent of needs interpolation and the injected volume of solid processing agent again, liquid treating agent is added in the mud tank, start stirring system and liquid treating agent and waste liquid are evenly stirred close 0.5-1 hour;
(3) solid processing agent is thrown in the mud tank, continued to stir 0.5-2 hour, make it full and uniform mixing, the waste drilling fluid drilling cuttings that will start after slag off apparatus will be handled is discharged in the landfill pond of production scene, and earthing landfill after the natural mummification recovers natural feature.
Compared with prior art, advantage of the present invention is as follows:
1, the present invention uses the solid processing agent that flyash and phosphate fertilizer constitute, and has both realized the absorption solidification to harmful organic substance, heavy metal ion, and the alkalescence in the drilling fluid that neutralized has again increased and handled back solid fertility, is beneficial to the later stage plant-growth.
2, among the present invention because the industrial waste that flyash is power plant to be produced, its environment protection significance of waste recycling is great; And phosphate fertilizer is cheap as a kind of agricultural fertilizer commonly used, wherein contains certain phosphoric acid, has realized simultaneously to the neutralization of alkalescence and to the chemical combination flocculation of heavy metal ion.
3, the present invention utilizes flyash and phosphate fertilizer preparation solid processing agent, and entire treatment agent cost is reduced, and processing costs has obtained effective control; The waste drilling fluid drilling cuttings short texture of handling, similar with soil, do not influence soil cultivation after burying.
4, the present invention is simultaneously applicable to water base and two kinds of waste drilling fluids of oil base.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further details.
The invention provides a kind of oil gas field waste drilling fluid drill chip innocent treatment agent, be made up of solid processing agent and liquid treating agent, liquid treatment agent is made by the raw material of the solid state of following weight proportioning,
Magnesium chloride 45～47% calcium chloride 45～47% polymerize aluminum chlorides 6～10%;
Solid-state treatment agent is made by following materials of weight proportions,
Flyash 60～70% phosphate fertilizer 30～40%.
Liquid treating agent can effectively be realized breakdown of emulsion, the throwing out to the waste drilling fluid drilling cuttings, simultaneously the various organic pollutants that carry in the drilling fluid is carried out chelating, thereby has eliminated the pollution of oil organism to environment basically.(wherein treatment agent weight is the weight of solid-state state to its usage quantity for the 4%-15% of discarded petroleum drilling fluid drilling cuttings weight, 4% is economic usage quantity, product after can guaranteeing to handle reaches discharging standards, can increase the amount of using according to the actual levels of pollution appropriateness of drilling fluid simultaneously).
Solid processing agent is to continue to handle on the drilling fluid that liquid treating agent was handled, after fully mixing by solid processing agent and waste drilling fluid drilling cuttings, realization is to the combination reaction of heavy metal ion, lower the pollution level of heavy metal, improve the pH value of final product simultaneously, make product and soil after the processing approximate.The characteristics of last solid processing agent maximum are may the material that environment pollutes to be adsorbed various, prevent that it is penetrated in the normal soil.Its normal usage quantity is the 4%-15% that needs the discarded petroleum drilling fluid drilling cuttings weight of processing.
Referring to Fig. 1, the step of oil gas field waste drilling fluid drill chip innocent treatment process is as follows:
Waste drilling fluid that produces in the drilling process and drilling cuttings all are directly to be discharged in the discharging pond usually, after drilling well finishes, what concentrate in the discharging pond is exactly pending whole waste drilling fluids and drilling cuttings, according to the actual difference of each geological condition, boring method, the degree of its pollution also is not quite identical.Therefore at first need the depleted discharge is once measured, draw its pollution level, determine the adding proportion of the treatment agent of needs in the actual innoxious process according to this pollution level by mensuration.
After having determined adding proportion, with waste emissions by the slush pump in the drilling well recycle system, a certain amount of waste drilling fluid drilling cuttings is extracted in the mud tank, weight and treatment agent adding proportion according to the waste drilling fluid drilling cuttings determines the liquid of needs interpolation, the injected volume of solid processing agent again, liquid treating agent is added in the mud tank, start stirring system and liquid treating agent and waste liquid are evenly stirred close 0.5-1 hour.
Throw in solid processing agent in the mud tank this moment, continues to stir 0.5-2 hour, makes it full and uniform mixing, and in the landfill pond that waste drilling fluid after the startup slag off apparatus will be handled and drilling cuttings are discharged into the production scene, earthing landfill after the natural mummification recovers natural feature.
Embodiment: certain well carries out the data of harmless treatment.
(1): the wellbore fluid that drilling well is used is the polymer dispersed drilling fluid, 2114 meters of completion well depths.Comprise 76.5 tons of ground barium sulfates in the drilling fluid, 1.5 tons in yellow soda ash, 0.5 ton of no chromium lignin, 0.29 ton of CMC, 0.5 ton of K-PHP, 2.5 tons of FT-881,3 tons in caustic soda, 4.8 tons of feero-chromo-lignosulfonates, the RT-0015.7 ton, 0.357 ton of MA-871,0.2 ton in sesbania powder produces about 600 tons of drilling cuttings and waste drilling fluid altogether.
(2): using the liquid treating agent additional proportion is 8%, the solid processing agent additional proportion is 4% (notes: according to prior detection decision, after this amount can be guaranteed to handle, resultant met GB5085.1-1996 " Hazardous wastes judging standard-leaching toxicity is differentiated ", GB5085.3-1996 " Hazardous wastes judging standard-corrodibility is differentiated ", GB8978-1996 " integrated wastewater discharge standard " series of standards.)
Throw in the detection of taking a sample behind the innocent treatment agent certain hour.Measure by multidraw, it is as follows that the pollutent before and after obtaining handling leaches the concentration contrast table:
The leaching concentration of table 1 drilling cuttings and the contained pollutent of waste drilling fluid
| The pollutent title | Water ratio % | COD | Total chromium | Sexavalent chrome | Petroleum-type | pH | Cu | Zn | Pb | Hg | Cd | As |
| Be untreated | 67.55 | 4089.50 | 31.225 | * | 3.14 | 10.54 | 0.84 | 6.39 | 1.05 | 0.0009 | -- | -- |
| After the processing | 278.17 | 0.65 | 0.012 | 1.28 | 9.28 | 0.034 | 0.11 | 0.019 | -- | -- | -- |
Annotate: "--" expression does not detect, and " * " expression can not be checked
(3): the diffusion test behind the long-term landfill
Drilling well waste material after the processing is directly embedded in the discharging pond of production scene, after 275 days, discharging pond surrounding soil is sampled, and tests its diffusion.Sampling soil is underground 0.5 meter, from beginning to sample altogether 5 times every 0.2 meter once sampling from 0.5 meter of pool side.Following table is the diffusion test result.
Table 2 leaches the Pollutants Diffusion test
(4): interpretation of result
From two groups of above-mentioned data as can be seen, oil field waste drilling fluid drill chip innocent treatment agent can effectively reduce environmentally harmful every pollutent index in the drilling well waste material, makes these waste materials innoxious, has reached national emission standard.After passing through long-term landfill simultaneously, there is not any diffuse pollution in surrounding soil, has realized zero the taking of ploughing.
Claims (4)
1, oil gas field waste drilling fluid drill chip innocent treatment agent is characterized in that being made up of solid processing agent and liquid treating agent, and liquid treating agent is made by the raw material of the solid state of following weight proportioning,
Magnesium chloride 45～47% calcium chloride 45～47% polymerize aluminum chlorides 6～10%;
Solid processing agent is made by following materials of weight proportions,
Flyash 60～70% phosphate fertilizer 30～40%.
2, oil gas field waste drilling fluid drill chip innocent treatment agent according to claim 1 is characterized in that: the solid state usage quantity of described liquid treating agent is the 4%-15% of waste drilling fluid drilling cuttings weight.
3, oil gas field waste drilling fluid drill chip innocent treatment agent according to claim 1 is characterized in that: the usage quantity of described solid processing agent is the 4%-15% of waste drilling fluid drilling cuttings weight.
4, the treatment process of oil gas field waste drilling fluid drill chip innocent treatment agent according to claim 1 is characterized in that: the step of described treatment process is as follows:
(1) at first needs the waste drilling fluid drilling cuttings is once measured, draw its pollution level, determine the adding proportion of the treatment agent of needs in the actual innoxious process according to this pollution level by mensuration;
(2) determined adding proportion after, with the waste drilling fluid drilling cuttings by the slush pump in the drilling well recycle system, a certain amount of waste drilling fluid drilling cuttings is extracted in the mud tank, weight and treatment agent adding proportion according to the waste drilling fluid drilling cuttings determines the liquid treating agent of needs interpolation and the injected volume of solid processing agent again, liquid treating agent is added in the mud tank, start stirring system and liquid treating agent and waste liquid are evenly stirred close 0.5-1 hour;
(3) solid processing agent is thrown in the mud tank, continued to stir 0.5-2 hour, make it full and uniform mixing, the waste drilling fluid drilling cuttings that will start after slag off apparatus will be handled is discharged in the landfill pond of production scene, and earthing landfill after the natural mummification recovers natural feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100181558A CN100523113C (en) | 2007-06-29 | 2007-06-29 | Oil gas field waste drilling fluid drill chip innocent treatment agent and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100181558A CN100523113C (en) | 2007-06-29 | 2007-06-29 | Oil gas field waste drilling fluid drill chip innocent treatment agent and method |
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| CN101096581A CN101096581A (en) | 2008-01-02 |
| CN100523113C true CN100523113C (en) | 2009-08-05 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363311B (en) * | 2008-10-07 | 2012-01-04 | 郭学峰 | Technological process for comprehensive treatment for waste drilling fluid following drill for oil-gas field |
| CN102180641A (en) * | 2011-01-26 | 2011-09-14 | 中国石油大学(华东) | Method and process for high strength curing of drilling waste |
| CN102989741B (en) * | 2012-11-20 | 2015-05-27 | 盐城工学院 | Preparation method of heavy metal solid waste curing agent |
| CN105858844A (en) * | 2016-05-30 | 2016-08-17 | 安徽国能亿盛环保科技有限公司 | Composite flocculating agent for treating printing and dyeing wastewater |
| CN109266353A (en) * | 2018-09-19 | 2019-01-25 | 成都大有石油钻采工程有限公司 | A kind of water base drilling cuttings cultivated soil modifying agent and modification method |
| CN110372126A (en) * | 2019-07-30 | 2019-10-25 | 南阳油田腾龙实业有限公司 | A kind of method for innocent treatment of rejected well drilling liquid containing alkali |
| CN112778045A (en) * | 2021-01-06 | 2021-05-11 | 陕西科技大学 | Humic acid liquid fertilizer and method for preparing same by utilizing fracturing flowback fluid of oil and gas field |
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