CN115583770A - Composite gel breaker for treating offshore waste drilling mud - Google Patents
Composite gel breaker for treating offshore waste drilling mud Download PDFInfo
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- CN115583770A CN115583770A CN202110760724.6A CN202110760724A CN115583770A CN 115583770 A CN115583770 A CN 115583770A CN 202110760724 A CN202110760724 A CN 202110760724A CN 115583770 A CN115583770 A CN 115583770A
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- acid
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- drilling mud
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- 239000002699 waste material Substances 0.000 title claims abstract description 30
- 238000005553 drilling Methods 0.000 title claims abstract description 27
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 239000002002 slurry Substances 0.000 claims abstract description 52
- 238000003756 stirring Methods 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 17
- 239000007800 oxidant agent Substances 0.000 claims abstract description 16
- 230000001590 oxidative effect Effects 0.000 claims abstract description 16
- 150000001768 cations Chemical class 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 11
- 125000002091 cationic group Chemical group 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 9
- 208000005156 Dehydration Diseases 0.000 claims abstract description 8
- 230000018044 dehydration Effects 0.000 claims abstract description 8
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid group Chemical group S(O)(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 229910001385 heavy metal Inorganic materials 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 6
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 239000011941 photocatalyst Substances 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 claims description 4
- JSYPRLVDJYQMAI-ODZAUARKSA-N (z)-but-2-enedioic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)\C=C/C(O)=O JSYPRLVDJYQMAI-ODZAUARKSA-N 0.000 claims description 3
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 3
- 229940120146 EDTMP Drugs 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- GJJDHSBABFZVRQ-UHFFFAOYSA-N [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=S Chemical compound [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=S GJJDHSBABFZVRQ-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 claims description 3
- 229960001484 edetic acid Drugs 0.000 claims description 3
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(III) nitrate Inorganic materials [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 claims description 3
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 3
- -1 permanganate Chemical compound 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- 229920001444 polymaleic acid Polymers 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- GOLXRNDWAUTYKT-UHFFFAOYSA-N 3-(1H-indol-3-yl)propanoic acid Chemical compound C1=CC=C2C(CCC(=O)O)=CNC2=C1 GOLXRNDWAUTYKT-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/004—Sludge detoxification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/125—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using screw filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a composite gel breaker for treating offshore waste drilling mud, which consists of a high-charge cation organic flocculant, inorganic salt, acid, alkali, an oxidant and water, and the gel breaking and dehydration treatment process of the offshore waste drilling mud comprises the following steps: preparation of the oxidized cationic gel breaker: adding a certain amount of inorganic salt and water into a reactor at room temperature, stirring to dissolve, slowly adding acid, keeping pH =3-5, stirring for 5-10min, and standing. Has the advantages that: the composite gel breaker can rapidly destabilize and solidify the offshore drilling waste slurry, so that part of organic pollutants are completely oxidized, degraded and solidified and are difficult to leach out. Compared with the prior art, the slurry dehydration rate is higher, good conditions are created for the subsequent treatment process of the waste slurry, and the raw materials of the invention are easy to purchase and have lower cost.
Description
Technical Field
The invention relates to the field of drilling, in particular to a composite gel breaker for treating offshore waste drilling mud.
Background
At present, 32-33% of the global oil production comes from offshore, and the global offshore oil production has increased 3 times in the last 30 years, and is expected to increase one time in the next 5 years. The offshore oil and gas resource reserve of China is 254.03 hundred million tons, which accounts for 26.0 percent of the total oil and gas resource amount of the whole country, and the increasing amount of crude oil in China is mainly dependent on offshore and western oil fields, and the development and utilization of offshore oil and gas resources occupy more and more important positions in national economy along with the continous entering of onshore main oil fields in the middle and later exploitation period. Limited by technical level and equipment, most of drilling mud and rock debris generated by the current offshore oil field operation are forced to be directly discharged, and a small amount of oil layer section waste is conveyed to land for treatment; the oily waste slurry is completely delivered to land for treatment, so that the storage, transportation and treatment costs are high, and the standard-reaching treatment is difficult. The current situation not only limits the exploitation speed of offshore oil and gas resources, but also brings great threat to the development of the whole ocean economy and society. There is therefore a need for a composite breaker for the treatment of offshore waste drilling mud.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The invention aims to provide a composite gel breaker for treating offshore waste drilling mud, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a composite gel breaker for treating offshore waste drilling mud comprises a high-charge cation organic flocculant, inorganic salt, acid, alkali, an oxidant and water, and the gel breaking and dehydration treatment process of the offshore waste drilling mud comprises the following steps:
the method comprises the following steps: preparation of the oxidized cationic gel breaker: adding a certain amount of inorganic salt and water into a reactor at room temperature, stirring to dissolve, slowly adding acid, keeping pH =3-5, stirring for 5-10min, and standing;
step two: preparing a slurry curing agent: weighing a certain amount of Al2O3 and SiO2 in a reactor at room temperature, adding water, uniformly stirring, placing in a water bath at 70 ℃, standing for 15min, adding an alkali solution with a certain concentration, rapidly stirring for 40min, and standing;
step three: adjusting the pH value of the slurry to 5-10 by using a pH regulator, sequentially adding 0.04-0.2% of penetrating agent and 0.03-0.4% of viscosity reducer, stirring for 15-25 minutes, adding 30-50 wt% of oxidant into the slurry, wherein the adding amount is 0.6-1.2% of the volume of the slurry, and oxidizing the slurry;
adding a heavy metal stabilizer with the concentration of 0.3-0.7 wt% into the oxidized slurry, wherein the addition amount is 3-6% of the volume of the slurry, so that heavy metal ions in the slurry form a stable complex;
step four: and (3) breaking and curing the waste drilling mud: putting a certain amount of offshore waste drilling mud into a stirring container, firstly adding a certain amount of the oxidation type cation gel breaker prepared in the step one to generate a large amount of gas, uniformly stirring, then adding a certain amount of high-charge cation organic flocculant, and uniformly stirring;
step five: finally, adding a certain amount of the slurry curing agent prepared in the second step, keeping the pH =8, stirring for 10min, performing mechanical separation, and separating to obtain slurry water and a mud cake;
wherein: the proportion of the composite gel breaker in the first step is as follows: 12-18% of inorganic salt, 12-22% of acid, 7-12% of alkali, 3-9% of oxidant and 49-74% of water;
the acid in the step one is sulfuric acid, hydrochloric acid and nitric acid;
the alkali solution in the second step is Na-OH and KOH;
the oxidant in the third step comprises chlorate, perchlorate, permanganate, dichromate, inorganic peroxide, manganese dioxide, ferric chloride, nitrate and sodium hypochlorite, wherein two or more oxidants are selected for composite use;
the adding amount of the high-charge cationic organic flocculant in the fourth step is 0.05-0.1 percent;
the addition amount of the oxidation type cation gel breaker in the fourth step is 2 to 11 percent;
in the fifth step, the addition of the slurry curing agent is 2 to 13 percent;
the adding sequence of the agents in the fourth step and the fifth step is that firstly, an acid cation gel breaking system is added or firstly, a slurry curing agent is added;
the pH regulator in the third step comprises citric acid, dilute sulfuric acid, dilute hydrochloric acid, hydrofluoric acid, sulfamic acid, tartaric acid, glycolic acid or organic phosphoric acid;
the heavy metal stabilizer in the third step comprises ethylene diamine tetraacetic acid, ethylene diamine tetramethylene phosphonic acid, polymaleic acid, polyacrylic acid, sodium thioantimonate, polyhydroxyacrylic acid, maleic acid-acrylic acid copolymer or polyacrylamide;
and (5) performing solid-liquid separation by adopting a vacuum belt filter, a centrifugal machine, a plate-and-frame filter press or a spiral filter press in the mechanical separation in the step five to obtain slurry water and a mud cake.
Preferably, the agitator vessel top matches and is equipped with the apron, lap joint elevating system, elevating system is including fixing the faying plate of agitator vessel outer wall both sides, the fixed elevator motor that is equipped with in inboard top of faying plate, elevator motor's output bottom mounting is in the apron top, pass through the pipe connection purifying box on the agitator vessel, be equipped with the auxiliary line on the purifying box, the auxiliary line with common thread bush is equipped with a screw thread section of thick bamboo between the pipeline, the purifying box top is the flip formula design, activated carbon adsorption layer, photocatalyst layer and ultraviolet lamp are installed in proper order to purifying box inside, be equipped with the gas vent on the purifying box.
Compared with the prior art, the invention has the following beneficial effects:
the composite gel breaker can rapidly destabilize and solidify the offshore drilling waste slurry, so that part of organic pollutants are completely oxidized, degraded and solidified and are difficult to leach out. Compared with the prior art, the slurry dehydration rate is higher, good conditions are created for the subsequent treatment process of the waste slurry, and the raw materials of the invention are easy to purchase and have lower cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a front view of an agitation vessel of a composite breaker for use in treating offshore waste drilling mud in accordance with an embodiment of the present invention.
Reference numerals:
1. a stirred vessel; 2. a cover plate; 3. a lap plate; 4. a lifting motor; 5. a purification box; 6. a threaded barrel; 7. an activated carbon adsorption layer; 8. a photocatalyst layer.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
in order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein and, therefore, the present invention is not limited to the specific embodiments disclosed in the following description.
The first embodiment is as follows:
a composite gel breaker for treating offshore waste drilling mud comprises a high-charge cationic organic flocculant, inorganic salt, acid, alkali, an oxidant and water, and the gel breaking and dehydration treatment process of the offshore waste drilling mud comprises the following steps:
the method comprises the following steps: preparation of the oxidized cationic gel breaker: adding a certain amount of inorganic salt and water into a reactor at room temperature, stirring to dissolve, slowly adding acid, keeping pH =3-5, stirring for 5-10min, and standing;
step two: preparation of a slurry curing agent: weighing a certain amount of Al2O3 and SiO2 in a reactor at room temperature, adding water, uniformly stirring, placing in a water bath at 70 ℃, standing for 15min, adding an alkali solution with a certain concentration inwards, rapidly stirring for 40min, and standing;
step three: adjusting the pH value of the slurry to 5-10 by using a pH regulator, sequentially adding 0.04-0.2% of penetrating agent and 0.03-0.4% of viscosity reducer, stirring for 15-25 minutes, adding 30-50 wt% of oxidant into the slurry, wherein the adding amount is 0.6-1.2% of the volume of the slurry, and oxidizing the slurry;
adding a heavy metal stabilizer with the concentration of 0.3-0.7 wt% into the oxidized slurry, wherein the addition amount is 3-6% of the volume of the slurry, so that heavy metal ions in the slurry form a stable complex;
step four: and (3) breaking and curing the waste drilling mud: putting a certain amount of offshore waste drilling mud into a stirring container 1, firstly adding a certain amount of the oxidation type cation gel breaker prepared in the step one to generate a large amount of gas, uniformly stirring, then adding a certain amount of high-charge cation organic flocculant, and uniformly stirring;
step five: finally, adding a certain amount of the slurry curing agent prepared in the second step, keeping the pH =8, stirring for 10min, performing mechanical separation, and separating to obtain slurry water and a mud cake;
wherein: the proportion of the composite gel breaker in the first step is as follows: 12% -18% of inorganic salt, 12% -22% of acid, 7% -12% of alkali, 3% -9% of oxidant and 49% -74% of water;
the acid in the first step is sulfuric acid, hydrochloric acid and nitric acid;
the alkali solution in the second step is Na-OH and KOH;
the oxidant in the third step comprises chlorate, perchlorate, permanganate, dichromate, inorganic peroxide, manganese dioxide, ferric chloride, nitrate and sodium hypochlorite, wherein two or more oxidants are selected for composite use;
the adding amount of the high-charge cationic organic flocculant in the fourth step is 0.05-0.1 percent;
the addition of the oxidation type cation gel breaker in the fourth step is 2 to 11 percent;
in the fifth step, the addition of the slurry curing agent is 2 to 13 percent;
adding the agents in the fourth step and the fifth step in sequence, namely adding the acidic cation gel breaking system or adding the slurry curing agent;
the pH regulator in the third step comprises citric acid, dilute sulfuric acid, dilute hydrochloric acid, hydrofluoric acid, sulfamic acid, tartaric acid, glycolic acid or organic phosphoric acid;
the heavy metal stabilizer in the third step comprises ethylene diamine tetraacetic acid, ethylene diamine tetramethylene phosphonic acid, polymaleic acid, polyacrylic acid, sodium thioantimonate, polyhydroxyacrylic acid, maleic acid-acrylic acid copolymer or polyacrylamide;
and (5) performing solid-liquid separation by adopting a vacuum belt filter, a centrifugal machine, a plate-and-frame filter press or a spiral filter press in the mechanical separation in the step five to obtain slurry water and a mud cake.
Through the scheme of the invention, the beneficial effects are as follows: the composite gel breaker can rapidly destabilize and solidify the offshore drilling waste slurry, so that part of organic pollutants are completely oxidized, degraded and solidified and are difficult to leach out. Compared with the prior art, the slurry dehydration rate is higher, good conditions are created for the subsequent treatment process of the waste slurry, and the raw materials of the invention are easy to purchase and have lower cost.
Example two:
referring to fig. 1, a cover plate 2 is arranged at the top end of a stirring container 1 in a matching manner, the cover plate 2 is connected with a lifting mechanism, the lifting mechanism comprises lap plates 3 fixed on two sides of the outer wall of the stirring container 1, a lifting motor 4 is fixedly arranged at the top ends of the inner sides of the lap plates 3, the output bottom end of the lifting motor 4 is fixed at the top end of the cover plate 2, the stirring container 1 is connected with a purifying box 5 through a pipeline, an auxiliary pipeline is arranged on the purifying box 5, a threaded cylinder 6 is sleeved on the common thread between the auxiliary pipeline and the pipeline, the top of the purifying box 5 is designed to be a flip type, an active carbon adsorption layer 7, a photocatalyst layer 8 and an ultraviolet lamp are sequentially arranged in the purifying box 5, and an exhaust port is arranged on the purifying box 5.
Through the scheme of the invention, the beneficial effects are as follows: since a large amount of gas is generated at the fourth step, the generated gas is triple-purified by the activated carbon adsorption layer 7, the photocatalyst layer 8 and the ultraviolet lamp, and the purified gas is discharged, thereby improving the working environment, and it is noted that the purification box 5 is installed on the lap plate by means of screws.
For the convenience of understanding the technical solution of the present invention, the following detailed description will be made of the working principle or the operation mode of the present invention in the practical process:
in practical application, the composite gel breaker can quickly destabilize and solidify the offshore drilling waste slurry, so that part of organic pollutants are completely oxidized, degraded and solidified and are difficult to leach out. Compared with the prior art, the method has the advantages that the dehydration rate of the slurry is higher, good conditions are created for the subsequent treatment process of the waste slurry, the raw materials are easy to purchase, and the cost is lower.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The composite gel breaker for treating the offshore waste drilling mud is characterized by comprising a high-charge cationic organic flocculant, inorganic salt, acid, alkali, an oxidant and water, and the gel breaking and dehydration treatment process of the offshore waste drilling mud comprises the following steps:
the method comprises the following steps: preparation of the oxidized cationic gel breaker: adding a certain amount of inorganic salt and water into a reactor at room temperature, stirring to dissolve, slowly adding acid, keeping pH =3-5, stirring for 5-10min, and standing;
step two: preparation of a slurry curing agent: weighing a certain amount of Al2O3 and SiO2 in a reactor at room temperature, adding water, uniformly stirring, placing in a water bath at 70 ℃, standing for 15min, adding an alkali solution with a certain concentration inwards, rapidly stirring for 40min, and standing;
step three: adjusting the pH value of the slurry to 5-10 by using a pH regulator, sequentially adding 0.04-0.2% of penetrating agent and 0.03-0.4% of viscosity reducer, stirring for 15-25 minutes, adding 30-50 wt% of oxidant into the slurry, wherein the adding amount is 0.6-1.2% of the volume of the slurry, and oxidizing the slurry;
adding a heavy metal stabilizer with the concentration of 0.3-0.7 wt% into the oxidized slurry, wherein the addition amount is 3-6% of the volume of the slurry, so that heavy metal ions in the slurry form a stable complex;
step four: and (3) breaking and curing the waste drilling mud: putting a certain amount of offshore waste drilling mud into a stirring container (1), firstly adding a certain amount of the oxidation type cation gel breaker prepared in the first step to generate a large amount of gas, uniformly stirring, then adding a certain amount of high-charge cation organic flocculant, and uniformly stirring;
step five: finally, adding a certain amount of the slurry curing agent prepared in the second step, keeping the pH =8, stirring for 10min, performing mechanical separation, and separating to obtain slurry water and a mud cake;
wherein: the proportion of the composite gel breaker in the first step is as follows: 12-18% of inorganic salt, 12-22% of acid, 7-12% of alkali, 3-9% of oxidant and 49-74% of water;
the acid in the step one is sulfuric acid, hydrochloric acid and nitric acid;
the alkali solution in the second step is Na-OH and KOH;
the oxidant in the third step comprises chlorate, perchlorate, permanganate, dichromate, inorganic peroxide, manganese dioxide, ferric chloride, nitrate and sodium hypochlorite, wherein two or more oxidants are selected for composite use;
the adding amount of the high-charge cationic organic flocculant in the fourth step is 0.05-0.1 percent;
the addition of the oxidation type cation gel breaker in the fourth step is 2 to 11 percent;
in the fifth step, the addition of the slurry curing agent is 2 to 13 percent;
adding the agents in the fourth step and the fifth step in sequence, namely adding the acidic cation gel breaking system or adding the slurry curing agent;
the pH regulator in the third step comprises citric acid, dilute sulfuric acid, dilute hydrochloric acid, hydrofluoric acid, sulfamic acid, tartaric acid, glycolic acid or organic phosphoric acid;
the heavy metal stabilizer in the third step comprises ethylene diamine tetraacetic acid, ethylene diamine tetramethylene phosphonic acid, polymaleic acid, polyacrylic acid, sodium thioantimonate, polyhydroxyacrylic acid, maleic acid-acrylic acid copolymer or polyacrylamide;
and (5) performing solid-liquid separation by adopting a vacuum belt filter, a centrifugal machine, a plate-and-frame filter press or a spiral filter press in the mechanical separation in the step five to obtain slurry water and a mud cake.
2. The composite gel breaker for treating offshore abandoned drilling mud according to claim 1, characterized in that a cover plate (2) is arranged at the top end of the stirring container (1) in a matching manner, the cover plate (2) is connected with a lifting mechanism, the lifting mechanism comprises a lapping plate (3) fixed on two sides of the outer wall of the stirring container (1), a lifting motor (4) is fixedly arranged at the top end of the inner side of the lapping plate (3), the output bottom end of the lifting motor (4) is fixed on the top end of the cover plate (2), the stirring container (1) is connected with a purifying box (5) through a pipeline, an auxiliary pipeline is arranged on the purifying box (5), a threaded cylinder (6) is sleeved on the common thread between the auxiliary pipeline and the pipeline, the top of the purifying box (5) is designed in a flip-type manner, an active carbon adsorption layer (7), a photocatalyst layer (8) and an ultraviolet lamp are sequentially arranged inside the purifying box (5), and an exhaust port is arranged on the purifying box (5).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103524017A (en) * | 2013-10-23 | 2014-01-22 | 中国海洋石油总公司 | Compound gel breaker for processing abandoned drilling mud at sea |
| CN108191180A (en) * | 2017-12-08 | 2018-06-22 | 江西炼石环保科技有限公司 | A kind of oil-base mud offal treatment medicament and its application method |
| CN111003910A (en) * | 2019-12-31 | 2020-04-14 | 西安华盛坤泰能源环保科技有限公司 | Method for treating waste sulfonated mud from drilling |
| CN111018288A (en) * | 2019-12-10 | 2020-04-17 | 北京华盛坤泰环境科技股份有限公司 | Centralized treatment method for waste drilling mud |
| CN212147502U (en) * | 2019-08-28 | 2020-12-15 | 深圳市永恒时代塑胶有限公司 | Multifunctional plastic suction equipment |
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2021
- 2021-07-06 CN CN202110760724.6A patent/CN115583770A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103524017A (en) * | 2013-10-23 | 2014-01-22 | 中国海洋石油总公司 | Compound gel breaker for processing abandoned drilling mud at sea |
| CN108191180A (en) * | 2017-12-08 | 2018-06-22 | 江西炼石环保科技有限公司 | A kind of oil-base mud offal treatment medicament and its application method |
| CN212147502U (en) * | 2019-08-28 | 2020-12-15 | 深圳市永恒时代塑胶有限公司 | Multifunctional plastic suction equipment |
| CN111018288A (en) * | 2019-12-10 | 2020-04-17 | 北京华盛坤泰环境科技股份有限公司 | Centralized treatment method for waste drilling mud |
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