CN103524017B - Compound gel breaker for processing abandoned drilling mud at sea - Google Patents
Compound gel breaker for processing abandoned drilling mud at sea Download PDFInfo
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- CN103524017B CN103524017B CN201310503218.4A CN201310503218A CN103524017B CN 103524017 B CN103524017 B CN 103524017B CN 201310503218 A CN201310503218 A CN 201310503218A CN 103524017 B CN103524017 B CN 103524017B
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Abstract
The invention discloses a gel breaker dehydration processing method for processing abandoned drilling mud at sea. The compound gel breaker is characterized in that: 1, adding the Al2(SO4)3 and water to a reactor at room temperature, stirring to dissolve, and then slowly adding the acid and the oxidizing agent, and stirring to stand; 2, adding Al2O3 and SiO2 to the reactor, adding water to evenly agitate; adding Ca(OH)2 or CaO after stirring for 10 minutes in water bath with temperature of 60 DEG C, and rapidly stirring for 30 minutes to stand; 3, taking a certain amount of abandoned drilling mud at sea to put into a container, firstly, adding a gel breaker, producing a lot of gases, and then adding the high-charge cationic organic flocculants to evenly stir after evenly stirring, finally adding a mud curing agent, keeping pHat 8, stirring for 10 minutes, carrying out mechanical separation, and separating to obtain mud effluent and a mud cake.
Description
Technical field
The present invention relates to offshore oil gas drilled hole technical field, be specially a kind of broken glue dehydration treatment method of marine waste drilling mud.
Background technology
In Present Global Oil extraction amount, have 32～33% to come from sea, the offshore oil output in the whole world has increased by 3 times for 30 years in the past, estimates also will double at the five-year.China's offshore oil and gas resource reserve is 254.03 hundred million tons, account for national oil gas total resources 26.0% along with land main force oil field enter successively in after the productive life, Chinese future crude oil increasing amount is mainly by sea and western oil field, and the exploitation of offshore oil and gas resource occupy more and more consequence in national economy.
Limit by state of the art and equipment, drilling mud landwaste (4～90,000 tons/year) majority that offshore oilfield operation at present produces is forced to direct discharge, and a small amount of oil layer section waste is transported to land processing; Oil-containing discarded slurry is all transported to land and processes, and not only accumulating and processing cost are high, and difficult treatment up to standard.This present situation has not only limited the recovery rate of offshore oil and gas resource, returns whole marine economy social development and has brought grave danger.
At present numerous for the art breading technology of discarded slurry, wherein chemically enhanced solid-liquid separation technique, simply, flexibly, high to suspended substance, colloidalmaterial clearance, its method is mainly to add chemical coagulator to discarded slurry to change drilling mud system physico-chemical property, allow thinner particle produce coalescent, make it under mechanical assistance separation condition, realize solid-liquid separation, but the main drawback of the method is: the broken glue weak effect of (1) coagulating agent to discarded slurry, can not break glue completely, muddy water is difficult for mechanical separation, the water turbidity after separation, and moisture content of the cake is high.(2) dosage of coagulating agent is large.(3) low to the clearance of COD.
Summary of the invention
In view of the weak point that prior art exists, the object of the present invention is to provide the preparation method of compound gel breaker, the mud that offshore drilling is discarded is processed.
The present invention is a kind of broken glue dehydration treatment method of marine waste drilling mud, it is characterized in that:
Step 1: the preparation of oxidized form positively charged ion gel breaker:
At room temperature, in reactor, add inorganic salt 100gAl
2(SO
4)
3with 300ml deionized water, stir and make it to dissolve, then slowly add inwards the 100g vitriol oil and 20g NaClO, stir and place;
Step 2: the preparation of mud curing agent:
At room temperature, in reactor, take 15gAl
2o
3with 10g SiO
2, add 100ml water to stir, be placed in the water-bath of 60 DEG C, stir after 10min, add inwards the Ca (OH) of 50g
2or CaO, rapid stirring 30min places;
Step 3: waste drilling mud breaks adhesive curing processing:
Get the marine waste drilling mud of 7500g in container, the oxidized form positively charged ion gel breaker that first adds 296g step 1 to prepare, produce a large amount of gas, after stirring, then add 1 ‰ high electric charge positively charged ion organic floculant 5g, stir, the mud curing agent that finally adds 242g step 2 to prepare, stir 10min, carry out mechanical separation, separate and obtain mud water outlet and mud cake.
The present invention also provides a kind of broken glue dehydration treatment method of marine waste drilling mud, it is characterized in that:
Step 1: the preparation of oxidized form positively charged ion gel breaker:
At room temperature, in reactor, add inorganic salt 100gAl
2(SO
4)
3with 300ml deionized water, stir and make it to dissolve, then slowly add inwards the 100g vitriol oil and 15g H
2o
2, stir and place;
Step 2: the preparation of mud curing agent:
At room temperature, in reactor, take 15gAl
2o
3with 10g SiO
2, add 100ml water to stir, be placed in the water-bath of 60 DEG C, stir after 10min, add inwards the Ca (OH) of 50g
2, rapid stirring 30min places;
Step 3: waste drilling mud breaks adhesive curing processing:
Get the marine waste drilling mud of 7500g in container, the oxidized form positively charged ion gel breaker that first adds 296g step 1 to prepare, produce a large amount of gas, after stirring, then add 1 ‰ high electric charge positively charged ion organic floculant 5g, stir, the mud curing agent that finally adds 242g step 2 to prepare, stir 10min, carry out mechanical separation, separate and obtain mud water outlet and mud cake.
The advantage of the inventive method and the beneficial effect of generation are:
(1) the compound gel breaker that the inventive method adopts can make offshore drilling discarded slurry de-steady, fixed fast, makes the complete oxidized degraded of some organic pollutants and fixed, is difficult to leach.Compared with prior art, slurry dewatering rate is higher, for the subsequent treatment process of discarded slurry creates good conditions.
(2) the inventive method raw material is easily purchased, and cost is lower, for commercial scale production and the commercialization of product create favorable conditions.
Embodiment
Embodiment 1
The broken glue dehydration treatment method of waste drilling mud:
(1) the broken colloid of oxidized form positively charged ion system preparation
At room temperature, in beaker, add Al
2(SO
4)
3(100g, 0.29mol), deionized water 300ml stirs and makes it to dissolve, and slowly adds inwards subsequently dense H
2sO
4(100g) and NaClO (20g), stir and place.
(2) preparation of mud curing agent
At room temperature, in reactor, take successively Al
2o
3(15g, 0.147mol) and SiO
2(10g, 0.167mol), adds water 100ml to stir, and is placed in the water-bath of 60 DEG C, stirs after 10min, adds inwards Ca (OH)
2(50g, 0.676mol), rapid stirring 30min places.
(3) the broken adhesive curing processing of discarded slurry
Get 7500g waste drilling mud in container, the oxidized form positively charged ion gel breaker that first adds fast 296g step 1 to prepare, after stirring, then add 1 ‰ high electric charge positively charged ion organic floculant 5g, after stirring, the mud curing agent that finally adds 242g step 2 to prepare, stir 10min, after mechanical separation, mud cake is fixed, and water ratio is 40%, mud water outlet outward appearance is bright, and COD is reduced to 900mg/l.
Embodiment 2
(1) the broken colloid of acidic cation system preparation
At room temperature, in beaker, add Al
2(SO
4)
3(100g, 0.29mol), deionized water 300ml stirs and makes it to dissolve, and slowly adds inwards subsequently dense H
2sO
4(100g) and H
2o
2(15g), stir and place.
(2) preparation of mud curing agent
At room temperature, in reactor, take successively Al
2o
3(15g, 0.147mol) and SiO
2(10g, 0.167mol), adds water 100ml to stir, and is placed in the water-bath of 60 DEG C, stirs after 10min, adds inwards Ca (OH)
2(50g, 0.676mol), rapid stirring 30min places.
(3) the broken adhesive curing processing of discarded slurry
Get 7500g waste drilling mud in container, the oxidized form positively charged ion gel breaker that first adds fast 296g step 1 to prepare, after stirring, then add 1 ‰ high electric charge positively charged ion organic floculant 5g, after stirring, the mud curing agent that finally adds 242g step 2 to prepare, stir 10min, after mechanical separation, mud cake is fixed, and water ratio is 45%, mud water outlet outward appearance is bright, and COD is reduced to 1200mg/l.
Embodiment 3
(1) the broken colloid of acidic cation system preparation
At room temperature, in beaker, add Al
2(SO
4)
3(100g, 0.29mol), deionized water 300ml stirs and makes it to dissolve, and slowly adds inwards subsequently dense H
2sO
4(100g) and NaClO (20g), stir and place.
(2) preparation of mud curing agent
At room temperature, in reactor, take successively Al
2o
3(15g, 0.147mol) and SiO
2(10g, 0.167mol), adds water 100ml to stir, and is placed in the water-bath of 60 DEG C, stirs after 10min, adds inwards CaO (50g, 0.893mol), and rapid stirring 30min places.
(3) the broken adhesive curing processing of discarded slurry
Get 7500g waste drilling mud in container, the oxidized form positively charged ion gel breaker that first adds fast 296g step 1 to prepare, after stirring, then add 1 ‰ high electric charge positively charged ion organic floculant 5g, after stirring, the mud curing agent that finally adds 242g step 2 to prepare, stir 10min, after mechanical separation, mud cake is fixed, and water ratio is 40%, mud water outlet outward appearance is bright, and COD is reduced to 1000mg/l.
Claims (2)
1. a broken glue dehydration treatment method for marine waste drilling mud, is characterized in that:
Step 1: the preparation of oxidized form positively charged ion gel breaker:
At room temperature, in reactor, add inorganic salt 100gAl
2(SO
4)
3with 300ml deionized water, stir and make it to dissolve, then slowly add inwards the 100g vitriol oil and 20g NaClO, stir and place;
Step 2: the preparation of mud curing agent:
At room temperature, in reactor, take 15gAl
2o
3with 10g SiO
2, add 100ml water to stir, be placed in the water-bath of 60 DEG C, stir after 10min, add inwards the Ca (OH) of 50g
2or CaO, rapid stirring 30min places;
Step 3: waste drilling mud breaks adhesive curing processing:
Get the marine waste drilling mud of 7500g in container, the oxidized form positively charged ion gel breaker that first adds 296g step 1 to prepare, produce a large amount of gas, after stirring, then add 1 ‰ high electric charge positively charged ion organic floculant 5g, stir, the mud curing agent that finally adds 242g step 2 to prepare, stir 10min, carry out mechanical separation, separate and obtain mud water outlet and mud cake.
2. a broken glue dehydration treatment method for marine waste drilling mud, is characterized in that:
Step 1: the preparation of oxidized form positively charged ion gel breaker:
At room temperature, in reactor, add inorganic salt 100gAl
2(SO
4)
3with 300ml deionized water, stir and make it to dissolve, then slowly add inwards the 100g vitriol oil and 15g H
2o
2, stir and place;
Step 2: the preparation of mud curing agent:
At room temperature, in reactor, take 15gAl
2o
3with 10g SiO
2, add 100ml water to stir, be placed in the water-bath of 60 DEG C, stir after 10min, add inwards the Ca (OH) of 50g
2, rapid stirring 30min places;
Step 3: waste drilling mud breaks adhesive curing processing:
Get the marine waste drilling mud of 7500g in container, the oxidized form positively charged ion gel breaker that first adds 296g step 1 to prepare, produce a large amount of gas, after stirring, then add 1 ‰ high electric charge positively charged ion organic floculant 5g, stir, the mud curing agent that finally adds 242g step 2 to prepare, stir 10min, carry out mechanical separation, separate and obtain mud water outlet and mud cake.
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|---|---|---|---|
| CN201310503218.4A CN103524017B (en) | 2013-10-23 | 2013-10-23 | Compound gel breaker for processing abandoned drilling mud at sea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310503218.4A CN103524017B (en) | 2013-10-23 | 2013-10-23 | Compound gel breaker for processing abandoned drilling mud at sea |
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| Publication Number | Publication Date |
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| CN103524017A CN103524017A (en) | 2014-01-22 |
| CN103524017B true CN103524017B (en) | 2014-12-03 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003495B (en) * | 2014-06-16 | 2015-07-08 | 唐山亨通科技有限公司 | Grease-like sewage treatment method and chemical agent |
| CN104386861B (en) * | 2014-12-08 | 2016-04-20 | 付炜 | The broken glue nucleation treatment process of rejected well drilling liquid |
| CN106630536A (en) * | 2016-12-30 | 2017-05-10 | 李沛然 | Well drilling waste drying agent and use method thereof |
| CN109293052A (en) * | 2018-10-23 | 2019-02-01 | 天津大港油田滨港集团博弘石油化工有限公司 | A kind of water base rejected well drilling liquid breaks colloid system and preparation method thereof |
| CN110143624A (en) * | 2019-05-31 | 2019-08-20 | 中国石油大学(华东) | A kind of support type stabilizes the preparation method of potassium ferrate |
| CN110117104A (en) * | 2019-06-12 | 2019-08-13 | 陕西国防工业职业技术学院 | A kind of water base no-pollution treatment technique of well-drilling waste sludge of oil-containing |
| CN112876037A (en) * | 2020-12-29 | 2021-06-01 | 青海煤炭地质一0五勘探队 | Special composite waste slurry curing agent for geological drilling and preparation and use methods thereof |
| CN115583770A (en) * | 2021-07-06 | 2023-01-10 | 北京中科润金环保工程股份有限公司 | Composite gel breaker for treating offshore waste drilling mud |
| CN115594385A (en) * | 2021-07-09 | 2023-01-13 | 北京中科润金环保工程股份有限公司（Cn） | High-temperature high-activity gel breaker for waste slurry treatment |
| CN115140915A (en) * | 2022-06-16 | 2022-10-04 | 安徽省交通航务工程有限公司 | Sludge oxidation and water separation method for dredged slurry |
Citations (5)
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| JP2004261752A (en) * | 2003-03-03 | 2004-09-24 | Toagosei Co Ltd | Method for flocculating organic matter-containing aqueous suspension and method for dehydrating sludge |
| CN101269888A (en) * | 2008-05-09 | 2008-09-24 | 四川大学 | Solid-liquid separation technique for waste slurry of water-based system artesian well |
| CN101475285A (en) * | 2009-01-19 | 2009-07-08 | 辽宁天意实业股份有限公司 | Gas field sewerage and solid pollutant comprehensive processing technological process |
| CN102320699A (en) * | 2011-06-22 | 2012-01-18 | 西南石油大学 | Method for destabilization coagulating treatment of well drilling waste liquid |
| CN102701487A (en) * | 2012-06-25 | 2012-10-03 | 杨德敏 | Method for treating sulfur-containing wastewater of oil and gas field |
-
2013
- 2013-10-23 CN CN201310503218.4A patent/CN103524017B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004261752A (en) * | 2003-03-03 | 2004-09-24 | Toagosei Co Ltd | Method for flocculating organic matter-containing aqueous suspension and method for dehydrating sludge |
| CN101269888A (en) * | 2008-05-09 | 2008-09-24 | 四川大学 | Solid-liquid separation technique for waste slurry of water-based system artesian well |
| CN101475285A (en) * | 2009-01-19 | 2009-07-08 | 辽宁天意实业股份有限公司 | Gas field sewerage and solid pollutant comprehensive processing technological process |
| CN102320699A (en) * | 2011-06-22 | 2012-01-18 | 西南石油大学 | Method for destabilization coagulating treatment of well drilling waste liquid |
| CN102701487A (en) * | 2012-06-25 | 2012-10-03 | 杨德敏 | Method for treating sulfur-containing wastewater of oil and gas field |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC TIANJIN CHEMICAL RESEARCH & DESIGN INSTITUTE CO., LTD. Patentee after: China National Offshore Oil Corporation Co-patentee after: CNOOC Energy Development Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Tianjin Chemical Research & Design Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: CNOOC Energy Development Co., Ltd. |
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