CN111778057B - Oil gas field drilling waste mud pre-separation-desorption-oil recovery coupling process system - Google Patents
Oil gas field drilling waste mud pre-separation-desorption-oil recovery coupling process system Download PDFInfo
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- CN111778057B CN111778057B CN202010656582.4A CN202010656582A CN111778057B CN 111778057 B CN111778057 B CN 111778057B CN 202010656582 A CN202010656582 A CN 202010656582A CN 111778057 B CN111778057 B CN 111778057B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/208—Sediments, e.g. bottom sediment and water or BSW
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Abstract
The invention aims to provide a coupling process system for pre-separation-desorption-oil recovery of waste drilling mud in an oil and gas field, which is used for efficiently recovering oil phase components in the mud through step-by-step treatment so as to achieve the purpose of resource utilization; meanwhile, the oily sewage in the treatment process is comprehensively utilized, so that the sewage production and energy consumption loss are reduced, the secondary pollution is reduced, and the effects of energy conservation and emission reduction are achieved; finally, the treated sewage, fine silt, rock debris, broken stones and the like are classified and collected, so that the treatment effects of recycling, reducing and harmlessness of the waste oil sludge are realized. The process system has the advantages of low sewage production amount, low heat energy loss, capability of realizing harmless treatment of resource recycling of waste gas oil slurry, low initial investment cost of equipment of the process system and contribution to popularization.
Description
Technical Field
The invention relates to the technical field of waste mud treatment, in particular to a pre-separation-desorption-oil recovery coupling process system for waste mud generated in drilling of an oil and gas field.
Background
The waste mud is a solid pollutant generated in the oil and gas exploitation and drilling process, has complex components, and is a complex multiphase system consisting of clay, crude oil, gravel, rock debris, various chemical treatment agents, sewage, phenolic compounds, heavy metals and the like. The waste slurry leachate has high toxicity, the direct discharge of the leachate can affect the nutritional environment condition and the quality of the crop growth, and the long-term accumulation can cause serious damage to surface vegetation, pollute soil and water sources and finally endanger the health and survival of human beings. According to the relevant regulations of the hazardous waste management of the people's republic of China, the oily waste belongs to hazardous waste, and the discharge of the oily waste such as waste mud and oily drill cuttings is strictly limited and has strict requirements of laws and regulations. With the aggravation of exploration and development of oil and gas fields in China, a large amount of waste mud is generated every day in oil field drilling production, the generated waste mud exists in a colloid and semisolid state, is invariable for a long time, occupies a large amount of land and seriously pollutes the environment, and the waste mud is one of oil-containing sludge pollution sources which are difficult to treat in the oil and gas production process at home and abroad.
The waste slurry has the advantages of wide particle distribution, high oil content, complex components, high treatment difficulty and high recovery value. At present, the conventional methods for waste mud include microbial metabolic degradation, pyrolysis, incineration, chemical cleaning, and the like. The microbial metabolism degradation method utilizes the metabolism of microorganisms to decompose low-oil substances, but the metabolism period of the microorganisms is usually longer, meanwhile, the aromatic hydrocarbon content in oil is higher, the microbial metabolism has obvious biotoxicity and obvious inhibition effect on the metabolism of the microorganisms, and the microbial metabolism is to metabolize the oil substances and is not beneficial to recycling and resource utilization of the oil substances. The pyrolysis method utilizes anaerobic pyrolysis separation, and has large equipment investment and large energy consumption. The incineration method realizes removal of slurry pollution by combustion of the fuel and the incineration fuel in a matching manner, but has high treatment cost and may bring secondary pollution. The chemical cleaning method utilizes emulsification, dissolution and separation, demulsification and recovery of oil phase, but the treatment process needs solvent water consumption, and sewage containing water can be generated, thus secondary pollution is formed. In summary, no better method for treating the waste slurry exists at home and abroad at present. With the increasingly strict national emission reduction requirements and the shortage of fossil energy faced by human beings, the reduction, harmless and recycling treatment of waste slurry becomes a big problem in the field of solid waste treatment.
Disclosure of Invention
In view of the above technical problems, an object of the present invention is to provide a process system for pre-separation, desorption, and oil recovery coupling of waste mud from oil and gas field drilling, which has low sewage production, low heat energy consumption, low initial investment cost of equipment, and is suitable for popularization, and can realize harmless treatment of resource recycling of waste mud.
The invention provides the following technical scheme:
the oil-gas field drilling waste mud pre-separation-desorption-oil recovery coupling process system is characterized by comprising the following steps of:
s1, pumping and pressurizing floating oil and water on the upper part of the waste slurry: sending the floating oil and water on the upper part of the waste slurry into a sludge pumping system, and simultaneously conveying the hot water produced by the process system to the sludge pumping system to carry out pumping pressurization treatment on the floating oil and water on the upper part of the waste slurry;
s2, separating and treating mud sediment, sand and stone on the lower part of the waste slurry: conveying the sludge, sand and stone at the lower part of the waste slurry by a screw conveyor, simultaneously adding a demulsifier in the conveying process, mixing the oily sewage in a process system with the sludge, sand and stone at the lower part of the waste slurry, conveying the mixture to a sand chip sorting system together, and sorting by a sand and stone vibrating screen to separate two parts of oily sewage and rock chips and gravels;
s3, desorption treatment of floating oil and water on the upper part of the waste slurry: conveying floating oil, water and a demulsifier which are output by an oil-containing sewage and sludge pumping system after sand chip sorting treatment to a fine silt desorption treatment system through a booster pump, so that crude oil is desorbed from the surface of the fine silt, and performing desorption separation of the crude oil and the fine silt;
s4, crude oil recovery treatment of floating oil and water on the upper part of the waste mud: conveying the upper oil phase subjected to the desorption treatment of the fine silt to a crude oil recovery system for extraction and recovery treatment of crude oil, conveying crude oil substances subjected to crude oil recovery treatment to a recovered oil storage system, and storing the recovered crude oil;
s5, separating and concentrating floating oil and water oil, mud and water on the upper part of the waste mud: conveying other materials except the upper floating oil removed after the fine silt is subjected to desorption treatment in the step S4 to an oil, silt, water separation and concentration system to obtain separated and concentrated clear water, sewage and silt;
s6, purifying and recycling the floating oil and water on the upper part of the waste mud: conveying part of upper clear water after oil, mud and water separation and concentration treatment to a sewage purification or water taking treatment system for sewage treatment;
s7, dewatering floating oil and water on the upper part of the waste mud: conveying the rest materials except the clear water at the upper part removed in the step S6 and the sewage discharged by the crude oil recovery system to a sludge dewatering treatment system together for sludge dewatering treatment;
s8, sorting and storing treatment after treatment of floating oil and water on the upper part of the waste slurry: conveying the sewage subjected to sludge dehydration treatment to a sewage purification or water taking treatment system for sewage treatment, and conveying the rest substances to a fine silt storage system for storage treatment;
s9, storing and treating sludge, sand and stones at the lower part of the waste slurry: and conveying the rock debris and the gravels after the sand debris separation to a rock debris, gravel and coarse sand storage system through a screw conveyor.
In step S3 of the process system of the present invention, the method further comprises: conveying the oily sewage subjected to sand-dust separation treatment, the pumping pressurization treatment output by a sludge pumping system, the floating oil, the water, the demulsifier and the hot water produced by the process system to a stirring and circulation treatment system together, stirring the materials by a stirring tank, circulating the stirred materials, and then stirring again; and conveying the mixed materials of the floating oil, the water and the like after stirring and circulating to a fine silt desorption treatment system through a booster pump.
In step S5 of the process system of the present invention, the oil, mud, water separation and concentration system includes performing cyclone separation on the material by using a cyclone, and concentrating the material after primary separation by using multi-stage cyclone separation.
In step S6 of the process system of the present invention, the method further comprises: mixing part of upper clear water after oil, mud, water separation and concentration treatment with fresh make-up water, heating through a heat conduction oil furnace system, storing heated hot water, and conveying to a required process link through a booster pump when in use.
In step S8 of the process system of the present invention, the method further comprises: adding an oxidant in the process of conveying the fine silt to a fine silt storage system.
In step S9 of the process system of the present invention, the method further comprises: and adding an oxidant in the conveying process of the spiral conveyor.
Compared with the prior art, the invention has the beneficial effects that:
according to the process system for pre-separation-desorption-oil recovery of the waste slurry, oil phase components in the slurry are efficiently recovered through step-by-step treatment, so that the purpose of resource utilization is achieved; meanwhile, the oily sewage in the treatment process is comprehensively utilized, so that the sewage production and energy consumption loss are reduced, the secondary pollution is reduced, and the effects of energy conservation and emission reduction are achieved; finally, the treated sewage, fine silt, rock debris, broken stones and the like are classified and collected, so that the treatment effects of recycling, reducing and harmlessness of the waste slurry are realized.
Drawings
FIG. 1 is a flow chart of a waste slurry pre-separation-desorption-oil recovery coupling process.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the disclosure herein.
Referring to the drawings, the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present disclosure can be implemented, so that the present disclosure has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the disclosure of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. Meanwhile, the positional limitation terms used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship therebetween may be regarded as the scope of the present invention without substantial changes in the technical content.
As shown in figure 1, the purpose of the invention is to realize the waste slurry pre-separation-desorption-oil recovery coupling process by the following technical scheme, which is characterized by comprising the following steps:
s1, pumping and pressurizing floating oil and water on the upper part of the waste slurry: sending the floating oil and water on the upper part of the waste slurry into a sludge pumping system, and simultaneously conveying the hot water produced by the process system to the sludge pumping system to carry out pumping pressurization treatment on the floating oil and water on the upper part of the waste slurry;
s2, separating and treating mud sediment, sand and stone on the lower part of the waste slurry: conveying the sludge, sand and stone at the lower part of the waste slurry by a screw conveyor, simultaneously adding a demulsifier in the conveying process, mixing the oily sewage in a process system with the sludge, sand and stone at the lower part of the waste slurry, conveying the mixture to a sand chip sorting system together, and sorting by a sand and stone vibrating screen to separate two parts of oily sewage and rock chips and gravels;
s3, desorption treatment of floating oil and water on the upper part of the waste slurry: conveying the oily sewage subjected to sand-dust separation treatment, the pumping pressurization treatment output by a sludge pumping system, the floating oil, the water, the demulsifier and the hot water produced by the process system to a stirring and circulation treatment system together, stirring the materials by a stirring tank, circulating the stirred materials, and then stirring again; conveying the mixed materials of the floating oil, the water and the like after stirring and circulating to a fine silt desorption treatment system through a booster pump, so that crude oil is desorbed from the surface of the fine silt, and performing desorption separation of the crude oil and the fine silt;
s4, crude oil recovery treatment of floating oil and water on the upper part of the waste mud: conveying the upper oil phase subjected to the desorption treatment of the fine silt to a crude oil recovery system for extraction and recovery treatment of crude oil, conveying crude oil substances subjected to crude oil recovery treatment to a recovered oil storage system, and storing the recovered crude oil;
s5, separating and concentrating floating oil and water oil, mud and water on the upper part of the waste mud: conveying other materials except the upper floating oil after the fine silt desorption treatment to an oil, silt, water separation and concentration system, carrying out cyclone separation on the materials through a cyclone, and concentrating the primarily separated materials by utilizing multistage cyclone separation to obtain separated and concentrated clear water, sewage and silt;
s6, purifying and recycling the floating oil and water on the upper part of the waste mud: conveying part of upper clear water after oil, mud and water separation and concentration treatment to a sewage purification or water taking treatment system for sewage treatment, mixing part of upper clear water with fresh make-up water, heating the mixture through a heat conduction oil furnace system, storing the heated hot water, and conveying the hot water to a required process link through a booster pump when the hot water is required to be used;
s7, dewatering floating oil and water on the upper part of the waste mud: the other materials except the clear water on the upper part after the oil, mud and water separation and concentration treatment and the sewage discharged by the crude oil recovery system are jointly conveyed to a sludge dehydration treatment system for sludge dehydration treatment;
s8, sorting and storing treatment after treatment of floating oil and water on the upper part of the waste slurry: conveying the sewage subjected to sludge dehydration treatment to a sewage purification or water taking treatment system for sewage treatment, conveying the rest substances to a fine silt storage system for storage treatment, and adding an oxidant in the process of conveying the rest substances to the fine silt storage system;
s9, storing and treating sludge, sand and stones at the lower part of the waste slurry: and conveying the rock debris and gravel after sand debris separation to a rock debris, gravel and coarse sand storage system through a screw conveyor, and adding an oxidant in the conveying process.
According to the process system for pre-separation-desorption-oil recovery of the waste slurry, oil phase components in the slurry are efficiently recovered through step-by-step treatment, so that the purpose of resource utilization is achieved; meanwhile, the oily sewage in the treatment process is comprehensively utilized, so that the sewage production and energy consumption loss are reduced, the secondary pollution is reduced, and the effects of energy conservation and emission reduction are achieved; finally, the treated sewage, fine silt, rock debris, broken stones and the like are classified and collected, so that the treatment effects of recycling, reducing and harmlessness of the waste slurry are realized.
The foregoing is merely a general embodiment of the invention and is not intended to limit the invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (6)
1. The waste slurry pre-separation-desorption-oil recovery coupling process system is characterized by comprising the following steps of:
s1, pumping and pressurizing floating oil and water on the upper part of the waste slurry: sending the floating oil and water on the upper part of the waste slurry into a sludge pumping system, and simultaneously conveying the hot water produced by the process system to the sludge pumping system to carry out pumping pressurization treatment on the floating oil and water on the upper part of the waste slurry;
s2, separating and treating mud sediment, sand and stone on the lower part of the waste slurry: conveying the sludge, sand and stone at the lower part of the waste slurry by a screw conveyor, simultaneously adding a demulsifier in the conveying process, mixing the oily sewage in the process system with the sludge, sand and stone at the lower part of the waste slurry, and conveying the mixture to a sand chip separation system together to separate two parts of oily sewage and rock chips and gravels;
s3, desorption treatment of floating oil and water on the upper part of the waste slurry: conveying floating oil, water and a demulsifier which are output by an oil-containing sewage and sludge pumping system after sand chip sorting treatment to a fine silt desorption treatment system through a booster pump, so that crude oil is desorbed from the surface of the fine silt, and performing desorption separation of the crude oil and the fine silt;
s4, crude oil recovery treatment of floating oil and water on the upper part of the waste mud: conveying the upper oil phase subjected to the desorption treatment of the fine silt to a crude oil recovery system for extraction and recovery treatment of crude oil, conveying crude oil substances subjected to crude oil recovery treatment to a recovered oil storage system, and storing the recovered crude oil;
s5, separating and concentrating floating oil and water oil, mud and water on the upper part of the waste mud: conveying other materials except the upper floating oil removed after the fine silt is subjected to desorption treatment in the step S4 to an oil, silt, water separation and concentration system to obtain separated and concentrated clear water, sewage and silt;
s6, purifying and recycling the floating oil and water on the upper part of the waste mud: conveying part of upper clear water after oil, mud and water separation and concentration treatment to a sewage purification or water taking treatment system for sewage treatment;
s7, dewatering floating oil and water on the upper part of the waste mud: conveying the rest materials except the clear water at the upper part removed in the step S6 and the sewage discharged by the crude oil recovery system to a sludge dewatering treatment system together for sludge dewatering treatment;
s8, sorting and storing treatment after treatment of floating oil and water on the upper part of the waste slurry: conveying the sewage subjected to sludge dehydration treatment to a sewage purification or water taking treatment system for sewage treatment, and conveying the rest substances to a fine silt storage system for storage treatment;
s9, storing and treating sludge, sand and stones at the lower part of the waste slurry: and conveying the rock debris and the gravels after the sand debris separation to a rock debris, gravel and coarse sand storage system through a screw conveyor.
2. The coupled process system as claimed in claim 1, wherein step S3 further comprises: conveying the oily sewage subjected to sand-dust separation treatment, the pumping pressurization treatment output by a sludge pumping system, the floating oil, the water, the demulsifier and the hot water produced by the process system to a stirring and circulation treatment system together, stirring the materials by a stirring tank, circulating the stirred materials, and then stirring again; and conveying the oil slick and water mixed material after stirring and circulating to a fine silt desorption treatment system through a booster pump.
3. The coupled process system of claim 1, wherein the oil, mud, water separation and concentration system in step S5 comprises cyclone separation of materials and multi-stage cyclone separation to concentrate the primarily separated materials.
4. The coupled process system as claimed in claim 1, wherein step S6 further comprises: mixing part of upper clear water after oil, mud, water separation and concentration treatment with fresh make-up water, heating through a heat conduction oil furnace system, storing heated hot water, and conveying to a required process link through a booster pump when in use.
5. The coupled process system as claimed in claim 1, wherein step S8 further comprises: adding an oxidant in the process of conveying the fine silt to a fine silt storage system.
6. The coupled process system as claimed in claim 1, wherein step S9 further comprises: and adding an oxidant in the conveying process of the spiral conveyor.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428247A (en) * | 2008-11-28 | 2009-05-13 | 天津市泰兴工贸有限公司 | Pollution-free oil-containing mud cleaning treatment method and treatment system thereof |
| CN101963358A (en) * | 2010-09-30 | 2011-02-02 | 昆明理工大学 | Combined treatment method for oilfield solid waste |
| CN102039301A (en) * | 2010-09-30 | 2011-05-04 | 昆明理工大学 | Oily sludge recycling and innocent comprehensive treatment process |
| CN108821528A (en) * | 2018-07-10 | 2018-11-16 | 中国石油集团川庆钻探工程有限公司 | Microbial treatment process and system for oil-containing sludge sand in oil field |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428247A (en) * | 2008-11-28 | 2009-05-13 | 天津市泰兴工贸有限公司 | Pollution-free oil-containing mud cleaning treatment method and treatment system thereof |
| CN101963358A (en) * | 2010-09-30 | 2011-02-02 | 昆明理工大学 | Combined treatment method for oilfield solid waste |
| CN102039301A (en) * | 2010-09-30 | 2011-05-04 | 昆明理工大学 | Oily sludge recycling and innocent comprehensive treatment process |
| CN108821528A (en) * | 2018-07-10 | 2018-11-16 | 中国石油集团川庆钻探工程有限公司 | Microbial treatment process and system for oil-containing sludge sand in oil field |
Non-Patent Citations (1)
| Title |
|---|
| 废弃油基泥浆综合利用技术的研究与应用;俞音等;《化学工程与装备》;20161130;241-242页 * |
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