CN109184600A - The recovery method and device of discarded oil-base mud landwaste base oil - Google Patents
The recovery method and device of discarded oil-base mud landwaste base oil Download PDFInfo
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- CN109184600A CN109184600A CN201811061574.4A CN201811061574A CN109184600A CN 109184600 A CN109184600 A CN 109184600A CN 201811061574 A CN201811061574 A CN 201811061574A CN 109184600 A CN109184600 A CN 109184600A
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- landwaste
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- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
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- 238000005728 strengthening Methods 0.000 claims 1
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
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- 239000003208 petroleum Substances 0.000 description 3
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
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- 239000012530 fluid Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000001179 sorption measurement Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
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- 238000000944 Soxhlet extraction Methods 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- 150000001454 anthracenes Chemical class 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- VZGDMQKNWNREIO-UHFFFAOYSA-N carbon tetrachloride Substances ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 1
- 230000001925 catabolic effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
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- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
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- 235000010446 mineral oil Nutrition 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
- E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
Abstract
This disclosure relates to which the recovery method and device of discarded oil-base mud landwaste base oil, provide a kind of recovery method of discarded oil-base mud landwaste base oil, method includes the following steps: (A) viscosity regulation；(B) eddy flow rotation oil removing；(C) solid particle collection；(D) tail gas condensing and circulation；And (E) water-oil separating and reuse.Additionally provide a kind of recyclable device of discarded oil-base mud landwaste base oil.
Description
Technical field
The disclosure belongs to oil gas field environmental protection and technical field of resource recovery more particularly to a kind of discarded oil-base mud rock
The recovery method and device of base oil are considered to be worth doing, to realize the resource utilization of discarded oil-base mud landwaste.Specifically, the disclosure mentions
The recovery method and device of a kind of discarded oil-base mud landwaste base oil are supplied.
Background technique
Generated largely discarded oil-base mud landwaste typically contains benzene in untraditional reservoir or bad ground exploitation
It is object, phenols, anthracene class etc. and the poisonous and harmful substance difficult to degrade such as heavy metal (including Ni, Cr, Ba etc.), radioactive element,
And soil, water body and vegetation will be caused to bring to environmental protection huge compared with major injury if do not dealt carefully with stench and toxicity
Big pressure, while also bringing the waste of petroleum resources.The reuse technology of discarded oil-base mud landwaste has at present: centrifuge dripping skill
Art, chemical extraction technology, Thermal desorption technology etc..
SPE-187696-MS(New Technologies for Effective Recycling of Oil based
Mud. Experience of Prirazlomnoye Field (the general lira Zi Luomu of the new technology-that oil-base mud effectively recycles
Interior oil field experience)) it has reported Schlumberger company and discarded oil-base mud landwaste oil content can be made to drop using rock debris drying machine
To 5-10 mass %.Chinese patent application CN201621356430.8, CN201620542623.6, CN201220462289.5
Etc. disclosing different types of rock debris drying machine.Chinese invention patent application CN 201410770581.7 discloses a kind of oil base
Slurry cuttings carry out oil-base mud recycling and drilling cuttings with brill with the method for boring processing, to the oil-base mud drilling cuttings that drilling process generates
Cleaning treatment is first bored with the higher oil-base mud containing liquid that solid control equipment such as vibrating screen, desander, centrifuge is discharged in base oil
Bits be diluted, mix, stirring, comminution pretreatment, then by oil-base mud drilling cuttings take off liquid drying, overflow go out oil-base mud can
With recycling, and, secondary cleaning inorganic agent primary to drilling cuttings is separated by solid-liquid separation again, reduces solid concentration.Utilize rock debris drying machine
A part of mud can be recycled to recycle, but the innoxious requirement of landwaste can not be reached, be only the pretreatment of oil-base mud landwaste, or
As a step in treatment process.
Chinese invention patent ZL 201310645168.3, ZL 201410033209.8, ZL 201410033980.5, ZL
201410033210.0 relating to the use of LRET (discarded oil-base mud landwaste resource reclaim technology) technical treatment discards oil-base mud
Or drilling cuttings and the technique and device that recycle wherein oil base and discarded oil-base mud, LRET technology is using normal-temperature deep desorption recycling work
Skill, including centrifugal filtration, centrifugal sedimentation, medicament normal-temperature deep desorption, distillation condensation process, and the mistake of recycling circulation medicament
Journey, the technology can realize the continuous recycling of mud, mud additive, heavy weight additive and medicament (99%), but its at normal temperatures and pressures
Treatment effeciency is affected by discarded oil base mud components, and higher medicament price causes operating cost higher.United States Patent (USP)
US 8758629 is related to a kind of similar chemical extraction method, extracts the oil that drilling cuttings includes with a kind of environmentally friendly extractant, then
With a kind of absorption of adsorbent dissolved with the extractant of oil, a certain amount of potassium chloride solution separation drilling cuttings and adsorbent are added afterwards,
The target of drilling cuttings oil removing is reached, the advantages of this method is that the extractant used is environmentally friendly harmless, the absorption after use
Agent is reusable by regeneration, but long processing period limits treating capacity, and oscillation extraction 7.5 minutes, after standing 96 hours,
Total petroleum hydrocarbons content is only capable of being down to 0.6% in drilling cuttings, does not reach processing standard.
Thermal desorption technology is because without more as attempting both at home and abroad in recent years the advantages that adding inorganic agent, oil removing more thoroughly
Discarded oil-base mud landwaste processing means.Chinese invention patent ZL 201410397190.5 is related to one kind and mainly utilizes friction life
Hot mode directly heat to oil-based drill cuttings the Thermal desorption processing method of de-oiling, while in SPE-188222-MS
(Processing and Recycling Drill Cuttings at Source- Technology and Services
Adhering to Zero Discharge Legislation (well drilling detritus process and circulating resources based on zero emission standards
Change technology and service)), SPE-183600-MS (Solutions for Management of Oil on Drilled
Cuttings in the New Deepwater Oil Province of Ghana (is bored for deep water oil newly developed area of Ghana
The resolution of well landwaste)) etc. also have the report that oil-base mud landwaste is discarded using the technical treatment in documents, and the world is known
M-I Swaco has the development and application of the technology under name geophysical service company Halliburton and Schlumberger.
The United States Patent (USP) US 9725973 and US 9677354 of Halliburton is related to a kind of side for recycling the base oil in discarded slurry
The method of method and device, this method friction heats drilling cuttings, thus make the oil in drilling cuttings, moisture vaporization, then condensing recovery, it should
The advantage of method is to be vaporized at a temperature of subatmospheric lower oil boiling point, to reach the mesh for reducing energy consumption
, and the disadvantage is that, this method can only handle the process object of low solid content, the mud of high solid content is easy to generate equipment tight
The abrasion of weight.Chinese invention patent application CN 201610547026.7, CN201710056325.5, which are disclosed, passes through high-temperature flue gas
The Thermal desorption processing method of indirect heating, while Jie Rui Environmental Protection Technology Co., Ltd is in SPE-184399-PA (Odor-
Treatment Technology for Recovered Hydrocarbons From Oily Waste in a Thermal-
Desorption Unit (Odor control technology during petroleum hydrocarbon in thermal analysis apparatus recycling oil pollutant)) report its benefit
The case where being applied at the scene with similar techniques, and so far from 2014, middle petrochemical industry Sichuan Fuling shale gas field attempts to use the U.S.
The Thermal desorption processing unit of the conduction oil indirect heating of NOV company exploitation carries out nothing to the discarded oil-base mud landwaste that scene generates
Evilization processing.But either directly heat or the Thermal desorption technology of indirect heating, always existed in engineer application energy consumption it is high,
Exhaust emission is serious, mud system by high temperature, can only recovery section base oil the problems such as.
Chinese invention patent application CN 201210147625.1 is related to the place that a kind of boiling bed residual oil adds hydrogen outlet catalyst
Method and apparatus are managed, hydro-thermal eddy flow desorption technology is based on, visbreaking are regulated and controled by (1), separation is desorbed in (2) eddy flow, (3) oil-water-is urged
Three processes of agent three phase separation and resource utilization make absorption oil from solid particle using the Osima jacoti, Osima excavata of rotational flow field
Desorption is separated in surface and inner void.Hydro-thermal eddy flow desorption technology is for the oil removing of outlet catalyst equally in Jian-
Ping Li(The enhancement on the waste management of spent hydrotreating
Catalysts for residue oil by a hydrothermal-hydrocyclone process (hydro-thermal eddy flow technique
Improve the research of residual hydrogenation dead catalyst harmless treatment effect), Catalysis Today (catalysis today), 271
(2016), 163-171) document in reported.Chinese patent application CN201710821746.2 discloses a kind of oil-containing
Outlet catalyst treatment and sorting reuse method and device, are urged by the washing of (A) outlet catalyst eddy flow and online activation, (B)
Agent solvent eddy flow rotation air lift, the sorting of (C) high activated catalyst flow acceleration, (D) high activated catalyst eddy flow air lift again
With granule capturing and the processes such as (E) gas cooling and solvent condensation and removal, oil is carried out to catalyst and is mutually desorbed and sorts.On
The high speed rotation for stating high Osima jacoti, Osima excavata and catalyst granules that technology utilizes in cyclone, enhances catalyst granules hole
The desorption process of middle oil, the above method and device are catalyzed only for the oil removal treatment and reuse of outlet catalyst although meeting
The processing requirement of agent reduces petroleum hydrocarbons to the pollution of environment and has recycled part oil phase and catalyst, but after processing
Solid phase oil content is still greater than 1 mass %, and treated that solid phase oil content is even higher than 5 mass % for hydro-thermal eddy flow desorption technology,
It is unable to satisfy requirement of the discarded oil-base mud harmless treatment to solid phase mineral oil in fluid less than 0.3 mass %.
Since the generally existing energy consumption of existing discarded oil base mud conditioning technology is high, secondary pollution is serious, processing cost is high etc.
Problem, and existing cyclone deoiling technology is not able to satisfy abandoned oil base mud harmless treatment requirement, therefore, this field is urgent
Need to develop a kind of simply discarded oil-base mud landwaste treating method and apparatus of efficient, environmentally friendly, energy saving, process flow, with
Realize the target of discarded oil-base mud and landwaste harmless treatment.
Summary of the invention
Present disclose provides the recovery methods and device of a kind of novel discarded oil-base mud landwaste base oil, to solve
Problems of the prior art.
The disclosure the technical problem to be solved is that: existing discarded oil-base mud landwaste processing technique is difficult to recycle abandoned oil
Base mud landwaste base oil.The present invention is strengthened using the rotation and revolution coupled motions of cutting grain in three-dimensional rotation field of turbulent flow
The centrifugation desorption of solid phase surface oil, capillary oil and hole oil, completes the separation and enrichment of oil gas, solid phase, realizes discarded oil base mud
The reuse of organic matter in magmatic rock bits.
On the one hand, present disclose provides a kind of recovery method of discarded oil-base mud landwaste base oil, this method include with
Lower step:
(A) viscosity regulation: discarded oil-base mud of the gas medium after gas heating system heats with feed system conveying
Landwaste mixing reduces the viscosity of landwaste by hot gas and landwaste heat exchange to reduce the interaction between oil, water and solid particle
Power；
(B) eddy flow rotation oil removing: the oil-base mud cutting grain of heated viscosity reduction is placed in cyclone group, in eddy flow field
In there are rotation and revolution coupled motions, using cutting grain rotation strengthen solid phase surface oil, capillary oil and hole oil from
Heart desorption, realizes the removing of organic matter in oil-base mud landwaste, and the week for generation of being revolved in three-dimensional rotation field of turbulent flow using it
The centrifugal force of phase oscillation completes the separation and enrichment of oil gas, solid phase, removing free oil, part capillary oil；
(C) solid particle collection: the solid particle after eddy flow rotation oil removing enters storage transport by cyclone underflow opening
System, in case resource utilization；
(D) tail gas condensing and circulation: the oil-containing tail gas flowed out by cyclone overflow port enters exothermic condensation in condenser system,
Wherein oil-base mud landwaste decompose fixed gas and heat exchange gas medium be back to feed system circulation, oil, aqueous mixtures into
Enter oil-water separation system；And
(E) water-oil separating is from reuse: isolated using the different realization water-oil separatings of oil, the hydrophilic and hydrophobic of water base group
Oil mutually and water prepare again oil-base mud or carry out resource utilization, water can also direct emission.
In one preferred embodiment, in step (A), the heating temperature range of gas medium is 70 DEG C~200
DEG C, it is determined by discarded oil base mud prescription, specified lower than discarded oil-base mud uses temperature.
In another preferred embodiment, in step (A), gas medium include: Cryogenic air, nitrogen, hydrogen,
Dry gas, low point of gas and combustion of natural gas tail gas.
In another preferred embodiment, in step (B), the revolving speed of oil-base mud landwaste rotation in eddy flow field
Range is 20,000 revolutions per second to 60,000 revolutions per seconds, and the residence time is 2~10 seconds.
On the other hand, present disclose provides a kind of recyclable device of discarded oil-base mud landwaste base oil, which includes:
Gas heating system, for being heated to gas medium, to heat discarded oil-base mud landwaste；
Feed system, for convey discarded oil-base mud landwaste with after gas heating system heats gas medium mix；
The cyclone group being connect with gas heating system and feed system, for carrying out eddy flow to discarded oil-base mud landwaste
Rotation oil removing, to realize the oil removing of discarded oil-base mud landwaste；
The condenser system connecting with cyclone group, the oil-containing tail gas for flowing out to cyclone overflow port condense, will
Fixed gas and recuperated gas medium the separation circulation that oil-base mud landwaste decomposes；
The oil-water separation system being connect with condenser system, it is oily, water to realize for being separated to oil, aqueous mixtures
Recycling reuse and harmless treatment respectively；And
The storage transportation system being connect with cyclone group, for transporting and storing the various materials in treatment process.
In one preferred embodiment, device further include: the well drilling solid control system being connect with feed system.
In another preferred embodiment, the eddy flow self-rotating system is 1~10 grade of cyclone tandem compound, and can
Plural parallel stage is carried out according to different disposal amount demand.
In another preferred embodiment, the installation combination of the eddy flow self-rotating system include cyclone just
Dress, cyclone upside-down mounting and cyclone formal dress are combined with upside-down mounting.
In another preferred embodiment, the oil-water separation system is based on grease polarity stress difference, in conjunction with oil
Water flowing form devises the mechanical structure of the hydrophobe combination of resistance to corrosion with high salt, eliminates the use of demulsifier, saliva contains out
Oil concentration≤30mg/L.
In another preferred embodiment, the oil-water separation system includes coalescer.
The utility model has the advantages that
The major advantage of methods and apparatus of the present invention is:
(i) using discarded oil-base mud cutting grain the centrifugal force that eddy flow field high speed rotation generates strengthen capillary it is oily,
The removing of surface oil and hole oil.
(ii) centrifugal force of the rectilinear oscillation generated using revolution completes the separation and enrichment of oil gas, solid phase；Due to landwaste
For revolving speed of the particle in eddy flow field up to tens of thousands of rpms, the centrifugal force of generation can sufficiently remove the oil that landwaste is received in microchannel
Phase, to recycle the organic matter in landwaste.
Detailed description of the invention
Attached drawing is provided for further understanding of the disclosure, it simply forms a part of this specification with into one
Step explains the disclosure, does not constitute the limitation to the disclosure.
Fig. 1 shows the recovery method of the discarded oil-base mud landwaste base oil in a preferred embodiment of the present invention
Process flow.
Fig. 2 is the viscosity-temperature curve for the discarded oil-base mud selected in one embodiment of the present of invention.
Fig. 3 is the particle diameter distribution for the discarded oil-base mud cutting grain selected in one embodiment of the present of invention.
Fig. 4 is the mesoporous distribution for the discarded oil-base mud cutting grain selected in one embodiment of the present of invention.
Fig. 5 is the surface area distribution for the discarded oil-base mud cutting grain selected in one embodiment of the present of invention.
Fig. 6 shows oil-base mud cyclone depth de-oiling effect in one embodiment of the present of invention.
Specific embodiment
Present inventor has found afterwards after extensive and in-depth study, discards the hole in oil-base mud cutting grain
Oil is difficult to be detached from microchannel from receiving, and discarded oil-base mud cutting grain is in eddy flow field, possess tens of thousands of rpms from
Rotary speed, it is possible to provide greater than the centrifugal force of viscosity resistance, to strengthen the removing of hole oil；Eddy flow rotation process time is short, and
Heating, viscosity reducing required temperature effectively increases treatment effeciency also below traditional handicraft, reduces energy consumption.
Based on the studies above and discovery, the present invention creatively develops a kind of returning for discarded oil-base mud landwaste base oil
Receiving method and device, have process is simple, easy to operate, oil removal efficiency is high, low power consumption and other advantages, efficiently solve in the prior art
There are the problem of.The present invention realizes base oil in oil-base mud landwaste by the technological parameter of regulation eddy flow self-rotating system
High efficiente callback, oil and water after separation can meet reuse technology standard, treated 0.3 mass % of landwaste oil content <.This
The method and apparatus process cycle of invention is short, low energy consumption, and is not easy that coking, maintenance cost are low, and the rate of recovery of base oil is higher than
90%, realize the resource utilization of discarded oil-base mud landwaste.
In the disclosure in a first aspect, providing a kind of recovery method of discarded oil-base mud landwaste base oil, this method
The following steps are included:
(A) viscosity regulation: discarded oil-base mud of the gas medium after gas heating system heats with feed system conveying
Landwaste mixing, is exchanged heat by hot gas and landwaste, can reduce the viscosity of landwaste to reduce oil, water and the phase interaction between solid particle
Firmly, convenient for the separation in cyclone group；
(B) eddy flow rotation oil removing: there are rotations and public affairs in cyclone group for the oil-base mud cutting grain of heated viscosity reduction
Turn coupled motions, is desorbed, is realized using the centrifugation that solid phase surface oil, capillary oil and hole oil are strengthened in the high speed rotation of cutting grain
The deep removal of organic matter in oil-base mud landwaste, and using revolve in three-dimensional rotation field of turbulent flow generation rectilinear oscillation from
Mental and physical efforts complete the separation and enrichment of oil gas, solid phase, removing free oil, part capillary oil；
(C) solid particle collection: the solid particle through eddy flow rotation oil removing enters storage transport system by cyclone underflow opening
System, in case resource utilization；
(D) tail gas condensing and circulation: the oil-containing tail gas flowed out by cyclone overflow port enters exothermic condensation in condenser system,
The fixed gas and recuperated gas medium that wherein oil-base mud landwaste decomposes are back to feed system circulation, oil, water mixing by the road
Object enters oil-water separation system；And
(E) water-oil separating is from reuse: isolated using the different realization water-oil separatings of oil, the hydrophilic and hydrophobic of water base group
Oil mutually and water can prepare again oil-base mud or carry out resource utilization, water can also direct emission.
In the disclosure, the operation temperature of the gas heating system in step (A) need to match according to the discarded oil-base mud of difference
Side is appropriate to be chosen, and should use temperature lower than the specified of discarded oil-base mud in principle, and temperature range is generally 70~200 DEG C,
Within the scope of this, the oil of discarded oil-base mud is not cracked mutually.
In the disclosure, the gas medium that gas heating system in step (A) is selected be air (under lower temperature) or
The inert gases such as nitrogen, hydrogen, dry gas, low point of gas, combustion of natural gas tail gas.
In the disclosure, in the eddy flow rotation oil removal process of step (B), oil-base mud landwaste is public for eddy flow in eddy flow field
Turn and particle rotation coupled motions, the rotation range of speeds are 20,000 revolutions per second to 60,000 revolutions per seconds, the residence time is 2~10
Second.
In the second aspect of the disclosure, a kind of recyclable device of discarded oil-base mud landwaste base oil, the device are provided
Include: well drilling solid control system, gas heating system, feed system, eddy flow self-rotating system, condenser system, oil-water separation system and
Store transportation system, in which:
The gas heating system is for heating gas medium, to heat discarded oil-base mud landwaste；
The cyclone group is used to carry out eddy flow rotation oil removing to discarded oil-base mud landwaste, to realize discarded oil-base mud
The depth oil removing of landwaste；
The oil-containing tail gas that the condenser system is used to flow out cyclone overflow port condenses, by oil-base mud landwaste
The fixed gas and recuperated gas medium of decomposition separate circulation；
The oil-water separation system is used to separate oil, aqueous mixtures, to realize the difference recycling reuse of oil, water
And harmless treatment；
The storage transportation system is used to transporting and storing the various materials in treatment process.
In the disclosure, the eddy flow self-rotating system is 1~10 grade of cyclone tandem compound, and can be according to different disposal amount
Demand carries out plural parallel stage.
In the disclosure, the installation combination of the eddy flow self-rotating system includes cyclone formal dress, cyclone upside-down mounting, rotation
Stream device formal dress is combined with upside-down mounting.
In the disclosure, the oil-water separation system is based on grease polarity stress difference, in conjunction with grease nowed forming, design
The mechanical structure of the hydrophobe combination of resistance to corrosion with high salt, eliminates the use of demulsifier, out saliva oil concentration≤30mg/L.
In the disclosure, the oil-water separation system includes coalescer.
Below referring to attached drawing.
Fig. 1 shows the recovery method of the discarded oil-base mud landwaste base oil in a preferred embodiment of the present invention
Process flow.As shown in Figure 1, coming from brill with what feed system 3 inputted after gas medium enters the heating of gas heating system 2
Well solid controlling system 1 discards oil-base mud landwaste and is mixed into eddy flow self-rotating system 4；The swirl velocity field of eddy flow self-rotating system 4 can
The turbulivity of gas is increased, strengthens the convective heat transfer between gas medium and discarded oil-base mud cutting grain, advantageously reduces useless
The viscosity of oil-base mud landwaste is abandoned, so as to the dispersion and the removing of oily phase of particle；It is public in eddy flow field using cutting grain simultaneously
Change the line of production raw rectilinear oscillation centrifugal force removing free oil, part capillary oil, high speed rotation generate centrifugal force removing capillary oil,
Surface oil and hole oil, realize the depth de-oiling of discarded oil-base mud landwaste；Discarded oil-base mud landwaste through depth de-oiling
Grain (Gu) be discharged from the underflow opening of afterbody, into storage transportation system 7, to resource utilization；And remove obtained liquid phase
(being made of oil, water etc.) enters condenser system 5 with gas medium and carries out gas-liquid separation, and gas medium is back to gas heating system
2 circulations, liquid phase enter oil-water separation system 6, and isolated water is recycled to well drilling solid control system 1 as production water and is returned
With base oil waits for resource utilization.
Embodiment
Below with reference to specific embodiment, the present invention is further explained.It should be appreciated, however, that these embodiments are only used for
It is bright the present invention and be not meant to limit the scope of the invention.The test method of actual conditions is not specified in the following example, usually
According to normal conditions, or according to the normal condition proposed by manufacturer.Unless otherwise indicated, all percentage and number be by weight
Meter.
Embodiment 1:
Certain shale gas block oil-base mud drilling well carries out at discarded oil-base mud oil removing according to the method for the present invention and device
Reason, specific operation and effect are described as follows:
1. oil-base mud chip sample physico-chemical property is tested
1) oil, water, solid three-phase content measuring
Utilize Soxhlet extractor and CCl4Oil-base mud landwaste is discarded in solvent extraction, measures sample using infrared spectrophotometer
The oil content of product is 19.4%；The solid content that sample is measured after drying is 63.1%, moisture content 17.5%.
2) viscosity-temperature curve is tested
The dynamic viscosity variation of discarded oil base slurry fluid sample during heating, such as Fig. 2 are tested with rotor viscosimeter
Shown, it is little to continue heating viscosity change after being heated to 128 DEG C for sample；And the dynamic viscosity of sample changes by first at this time
17500cP (centipoise) under temperature is reduced to 226cP, reduces about 80 times.Test result shows: discarded oil-base mud can by heating
Its viscosity is effectively reduced, the selection of heated gaseous mediums temperature is and guided.
3) cutting grain partial size is tested
The partial size of cutting grain directly affects the size for the centrifugal force that it is subject in cyclone, is measured with laser particle analyzer
The particle diameter distribution of cutting grain extracted is as shown in figure 3, particle size distribution range is 0.15 μm to 976.48 μm, average diameter
It is 202.73 μm, median diameter is 63.49 μm, and standard deviation is 26.63 μm.
4) nitrogen adsorption is tested
The specific surface area and pore volume that oil-based drill cuttings particle extracted is measured with full-automatic nitrogen adsorption instrument, such as Fig. 4-
Shown in 5, particle average surface area is 9.43m2/ g, average pore sizes 0.0372cm3/ g, 163.47 μm of average pore size.Chart sign
Oil-based drill cuttings particle is the irregular porous system of surface topography, and landwaste duct is mainly in macropore range, therefore de-oiling is very
Difficulty is big.
2. implementation process
Implement referring to the method for the present invention, specific as follows:
What heated gaseous mediums were selected in the present embodiment is air, so that gas heating method is using air duct electric heating
Device；Material is conveyed using screw rod conveyer.
Discarded oil-base mud landwaste is sent into eddy flow certainly from well drilling solid control system with the charging rate of 50kg/h by feed system
Transfer from one department to another to unite；Gas is with 200m3The flow of/h sufficiently changes in eddy flow field after gas heating system is warming up to 160 DEG C with landwaste
Heat, to reduce landwaste viscosity；Cutting grain generates rotation and revolution coupled motions in eddy flow self-rotating system, can effectively strengthen rock
Consider the removing of liquid phase in hole to be worth doing；Last condenser system, oil-water separation system condense oil-containing tail gas, water-oil separating and returns
With；Sample tap is equipped with as analysis sample in the underflow opening of the every level-one of cyclone group；To the solid, liquid, gas three of storage transportation system
Mutually it is sampled analysis.
3. implementation result
1) de-oiling effect
With the method for theoretical calculation, calculate residence time of the cutting grain in cyclone as eddy flow rotation de-oiling at
The time of reason, calculated result are every grade of residence time about 0.3 second.With Soxhlet extraction extraction-infrared spectroscopy method, test from
The bore meal particles oil content of cyclone underflow openings at different levels, and calculate the de-oiling efficiencies at different levels relative to initial material.Such as Fig. 6 institute
Show, after processing in 2.7 seconds, the oil content of bore meal particles is 0.16 mass %, far below GB 4284-84 " in agricultural sludge
Pollutant catabolic gene standard " in requirement to oil content less than 0.3 mass %, de-oiling efficiency reaches 99.2%.
2) gas, oil, water separating effect
Moisture content range in oil sample is 5~15 mass %, and surveying its organic component is the hydro carbons and ether based on diesel oil
Class etc. meets requirement of the configuration oil-base mud to oil product；Oil content range in water sample is 15~25 mg/L, meets GB
4914-2008 " offshore oil exploration and exploitation Pollutant emission concentration limit value ", GB 8978-1996 " integrated wastewater discharge standard "
Grade III Standard.
3) equipment energy consumption is estimated
According to the energy consumption of the industrial application device of 8.4 ten thousand tons of process Estimation of energy consumption annual amount for the treatment of of test, each main electricity consumption is set
Standby energy consumption is as shown in the table:
The oily 871.78 tons of marks oil of the equivalent mark of year total energy consumption discards the processing energy consumption 10.38kg/t mark of oil-base mud landwaste
Oil.In conclusion the operating cost of technique can be effectively reduced in the implementation of the technology, economize on resources, protects environment.
Above-mentioned listed embodiment is only the preferred embodiment of the disclosure, not is used to limit the implementation model of the disclosure
It encloses.Equivalence changes and modification made by i.e. all contents according to the application the scope of the patents, all should be the technology scope of the disclosure.
It is incorporated herein by reference in all documents that the disclosure refers to, it is independent just as each document
It is incorporated as with reference to such.In addition, it should also be understood that, those skilled in the art can after having read the above-mentioned teaching content of the disclosure
To make various changes or modifications to the disclosure, such equivalent forms equally fall within model defined by the application the appended claims
It encloses.
Claims (10)
1. a kind of recovery method of discarded oil-base mud landwaste base oil, method includes the following steps:
(A) viscosity regulation: discarded oil-base mud landwaste of the gas medium after gas heating system heats with feed system conveying
Mixing reduces the viscosity of landwaste by hot gas and landwaste heat exchange to reduce the interaction force between oil, water and solid particle；
(B) eddy flow rotation oil removing: the oil-base mud cutting grain of heated viscosity reduction is placed in cyclone group, is deposited in eddy flow field
In rotation and revolution coupled motions, the centrifugation for strengthening solid phase surface oil, capillary oil and hole oil using the rotation of cutting grain is de-
It is attached, realize the removing of organic matter in oil-base mud landwaste, and the period vibration for generation of revolving in three-dimensional rotation field of turbulent flow using it
The centrifugal force swung completes the separation and enrichment of oil gas, solid phase, removing free oil, part capillary oil；
(C) solid particle collection: the solid particle after eddy flow rotation oil removing enters storage transportation system by cyclone underflow opening,
In case resource utilization；
(D) tail gas condensing and circulation: the oil-containing tail gas flowed out by cyclone overflow port enters exothermic condensation in condenser system, wherein
The gas medium of fixed gas and heat exchange that oil-base mud landwaste decomposes is back to feed system circulation, and oil, aqueous mixtures enter oil
Water separating system；And
(E) water-oil separating is from reuse: utilizing the different realization water-oil separatings of oil, the hydrophilic and hydrophobic of water base group, isolated oil
Mutually oil-base mud is prepared again or carries out resource utilization with water, and water can also direct emission.
2. the method as described in claim 1, which is characterized in that in step (A), the heating temperature range of gas medium is 70
DEG C~200 DEG C, it is determined by discarded oil base mud prescription, specified lower than discarded oil-base mud uses temperature.
3. the method as described in claim 1, which is characterized in that in step (A), gas medium includes: Cryogenic air, nitrogen
Gas, hydrogen, dry gas, low point of gas and combustion of natural gas tail gas.
4. the method as described in claim 1, which is characterized in that in step (B), the rotation in eddy flow field of oil-base mud landwaste
The range of speeds be 20,000 revolutions per second to 60,000 revolutions per seconds, the residence time be 2~10 seconds.
5. a kind of recyclable device of discarded oil-base mud landwaste base oil, the device include:
Gas heating system (2), for being heated to gas medium, to heat discarded oil-base mud landwaste；
Feed system (3), for convey discarded oil-base mud landwaste with after gas heating system (2) heating gas medium it is mixed
It closes；
The cyclone group (4) being connect with gas heating system (2) and feed system (3), for discarded oil-base mud landwaste into
Row eddy flow rotation oil removing, to realize the oil removing of discarded oil-base mud landwaste；
The condenser system (5) connecting with cyclone group (4), the oil-containing tail gas for flowing out to cyclone overflow port condense,
Fixed gas and recuperated gas medium the separation circulation that oil-base mud landwaste is decomposed；
The oil-water separation system (6) being connect with condenser system (5), for being separated to oil, aqueous mixtures, to realize oil, water
The reuse of difference recycling and harmless treatment；And
The storage transportation system (7) being connect with cyclone group (4), for transporting and storing the various materials in treatment process.
6. device as claimed in claim 5, which is characterized in that the device further include: the drilling well connecting with feed system (3) is solid
Control system (1).
7. device as claimed in claim 5, which is characterized in that the eddy flow self-rotating system (4) is 1~10 grade of cyclone series connection
Combination, and plural parallel stage can be carried out according to different disposal amount demand.
8. device as claimed in claim 5, which is characterized in that the installation combination of the eddy flow self-rotating system (4) includes
Cyclone formal dress, cyclone upside-down mounting and cyclone formal dress are combined with upside-down mounting.
9. device as claimed in claim 5, which is characterized in that the oil-water separation system (6) is based on grease polarity stress not
Together, in conjunction with grease nowed forming, the mechanical structure of the hydrophobe combination of resistance to corrosion with high salt is devised, making for demulsifier is eliminated
With saliva oil concentration≤30mg/L out.
10. device as claimed in claim 5, which is characterized in that the oil-water separation system (6) includes coalescer.
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