CN103570318A - Curing material for drilling waste slurries as well as method thereof for curing drilling waste slurries - Google Patents
Curing material for drilling waste slurries as well as method thereof for curing drilling waste slurries Download PDFInfo
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- CN103570318A CN103570318A CN201310506661.7A CN201310506661A CN103570318A CN 103570318 A CN103570318 A CN 103570318A CN 201310506661 A CN201310506661 A CN 201310506661A CN 103570318 A CN103570318 A CN 103570318A
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- drilling waste
- waste mud
- drilling
- waste slurries
- solidify
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Abstract
The invention relates to a curing material for drilling waste slurries. The curing material consists of the following components in percentage by weight: 55-60% of SiO2 and 40-45% of Al2O3 based on sum of percent by weight of 100%. The method for curing drilling waste slurries by using the curing method comprises the following steps: fully mixing SiO2 and Al2O3 to prepare the curing material; pouring the drilling waste slurries, coal ash, a coagulant and the curing material into a pre-opened pit slot to add water and stir; and piling up for 1-2 hours and paving on a pavement to grind and maintain for 24-48 hours. SiO2 and Al2O3 in the curing material for the drilling waste slurries hydrated are subjected to alkaline excitation by Ca(OH)2 in the drilling waste slurries to generate a C-S-H gel and hydrated calcium aluminate matters. The hydrated calcium aluminate matters are further subjected to excitation of sulfate such as blanc fixe in the drilling waste slurries to generate a single sulphur type hydrated calcium aluminate product so as to improve the gel components and the hardening quality of the waste slurries.
Description
Technical field
The invention belongs to field use technical field of chemistry, be specifically related to a kind of drilling waste mud solidify material, the invention still further relates to a kind of method of utilizing this solidify material to solidify drilling waste mud.
Background technology
When drilling waste mud is oil drilling for lubrication drill bit, carry that drilling cuttings, balance down-hole pressure are formed take wilkinite, salt solution etc. as main component and add the gunk of gas chromatography.Take oil recovery factory, Yanchang Oilfield West is example, since 1997, approximately needs every year in recent years to beat all kinds of recovery wells, prospect pit, 600 mouthfuls of left and right of inspection chamber, and the waste mud that every mouthful of drilling well produces is about 150m
3～200m
3, approximately produce 1.2 * 10 the whole year
5m
3drilling waste mud.Major part is all as rubbish emergency burial.The dispersiveness (taking a walk at each drilling well point) existing due to drilling waste mud, disguised (do not resemble sump oil and sewage is more easily intuitively discovered), its prevention and cure of pollution and the comprehensive regulation do not cause people's enough attention, and the research of waste mud reutilization technology is started late.In recent years, people have had deep understanding to drilling waste mud contaminate environment.Drilling waste mud and sump oil, sewage are the same, are one of three large public hazards of field produces.Main manifestations has three: one, and hard degradation under drilling waste mud state of nature causes surrounding area soil compaction, saline Land, vegetation considerable damage; The 2nd, drilling waste mud long-term accumulated is penetrated under earth's surface water layer or with the excessive inflow rivers of rainwater brook, polluted source, harm people's health; The 3rd, drilling waste mud is deposited in around well site, takies a large amount of arable lands or meadow, makes the soil taking lose use value, becomes new source of pollution.The comprehensive regulation of drilling waste mud has been become to current problem anxious to be resolved.
Because drilling waste mud corrodibility is large, be not easy to transportation, the utilization of drilling waste mud is also in to experimental stage both at home and abroad, still do not possess the condition of large-scale industrialization comprehensive utilization.From available data, both at home and abroad to generally all fixed disposal in advance of waste mud, and then comprehensive utilization.The U.S., Japan and other countries are to the research of the concretion technology history of existing more than ten years, and foremost Japanese Chichibu Onoda Cement Corporation development research goes out for the fixed material more than ten of industrial sludge, high organic soil etc. to plant.Theoretically, drilling waste mud adds after additive and aggregate, through solidifying, just can fundamentally change the character of waste mud, makes it to become the material with certain cement feature.But current both at home and abroad equal untapped curing material going out specially for drilling waste mud, it is all the fixed material for clay, industrial sludge that waste mud solidifies what use, slurry curing effect is undesirable.Current Domestic, the external existing trial that is applied to well site sclerosis, recovers the aspects such as soil after waste mud is solidified, because above-mentioned experiment can not fundamentally solve rain erosion, mud is the problem of contaminate environment again, so there is no so far engineering example, waste mud industrialization reutilization technology is still world-class technical barrier.
Summary of the invention
The object of this invention is to provide a kind of drilling waste mud solidify material, what solved existing waste mud material use is all the cementing material for clay, industrial sludge, the problem that slurry curing effect is undesirable.
Another object of the present invention is to provide a kind of method of utilizing above-mentioned solidify material to solidify drilling waste mud.
The technical solution adopted in the present invention is, a kind of drilling waste mud solidify material is composed of the following components by mass percentage, SiO
255%～60%, Al
2o
340%～45%, said components mass percent sum is 100%.
Another technical scheme of the present invention is, utilizes above-mentioned solidify material to solidify the method for drilling waste mud, and concrete steps are as follows:
Step 1, takes respectively SiO by mass percentage
255%～60%, Al
2o
340%～45%, said components mass percent sum is 100%, by the SiO taking
2and Al
2o
3fully be mixed and made into drilling waste mud solidify material;
Step 2, offers hole groove in advance, pours drilling waste mud, flyash, setting accelerator and drilling waste mud solidify material into hole groove, adds water and stirs, and piles up after 1～2h and is layered on road surface through rolling maintenance 24～48h.
Feature of the present invention is also,
In step 2, the mass ratio of drilling waste mud, flyash, setting accelerator and drilling waste mud solidify material is 1:1.5～1.7:0.2～0.5:0.5～1.
In step 2, setting accelerator is water glass, potassium silicate or Tai-Ace S 150.
The invention has the beneficial effects as follows, drilling waste mud solidify material of the present invention, by by SiO
2and Al
2o
3fully be mixed and made into SiO
2and Al
2o
3active substance is subject to Ca in drilling waste mud (OH) in aquation
2alkaline excitation, generate respectively C-S-H gel and drated calcium aluminate class material, drated calcium aluminate class material can be subject to again exciting of material that in drilling waste mud, the sulphate content such as ground barium sulfate is high, generate the products such as hydrated calcium aluminate sulfate (Aft) of single sulphur type, can further improve bonding component and the sclerosis quality of waste mud system.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
A kind of drilling waste mud solidify material of the present invention, composed of the following components by mass percentage, SiO
255%～60%, Al
2o
340%～45%, said components mass percent sum is 100%.
Drilling waste mud solidify material of the present invention, by by SiO
2and Al
2o
3fully be mixed and made into SiO
2and Al
2o
3active substance is subject to Ca in drilling waste mud (OH) in aquation
2alkaline excitation, generate respectively C-S-H gel and drated calcium aluminate class material, drated calcium aluminate class material can be subject to again exciting of material that in drilling waste mud, the sulphate content such as ground barium sulfate is high, generate the products such as hydrated calcium aluminate sulfate (Aft) of single sulphur type, can further improve bonding component and the sclerosis quality of waste mud system.
Utilize above-mentioned solidify material to solidify the method for drilling waste mud, concrete steps are as follows:
Step 1, takes respectively SiO by mass percentage
255%～60%, Al
2o
340%～45%, said components mass percent sum is 100%, by the SiO taking
2and Al
2o
3fully be mixed and made into drilling waste mud solidify material;
Step 2, offer in advance hole groove, by drilling waste mud, flyash, setting accelerator (setting accelerator is water glass, potassium silicate or Tai-Ace S 150) and drilling waste mud solidify material, according to mass ratio, be that 1:1.5～1.7:0.2～0.5:0.5～1 is poured hole groove into, add water and stir, pile up after 1～2h and be layered on road surface through rolling maintenance 24～48h.
Drilling waste mud is under the booster action of solidify material of the present invention and flyash and setting accelerator, can absorb over 2 times of above free waters of own wt, accelerate the ion-exchange chemical reaction between solidify material of the present invention and flyash and drilling waste mud, form principal crystalline phase with the ettringite structure of 32 molecular crystal water, impel waste mud rapid coagulation in quite wide temperature range, sclerosis, realize the needed mechanical strength of induration.
Drilling waste mud is strong basicity, adds SiO
2and Al
2o
3active substance is subject to Ca in mud (OH) in aquation
2alkaline excitation, can generate respectively C-S-H gel and drated calcium aluminate class material, its chemical reaction mechanism is:
Active SiO
2+ Ca (OH)
2=CaOSiO
2n
1h
2o
Active A l
2o
3+ Ca (OH)
2=CaOAl
2o
3h
2o
Be subject to the CaOAl that alkaline excitation generates
2o
3h2O, can be subject to again exciting of material that the sulphate contents such as ground barium sulfate in waste mud are high, generates the products such as hydrated calcium aluminate sulfate (Aft) of single sulphur type, can further improve bonding component and the sclerosis quality of waste mud system, forms complex excitation mechanism:
CaOAl
2O
3·H
2O+CaSO
4·2H
2O=CaOAl
2O
3CaSO
4·2H
2O+H
2O
Due to Ca (OH)
2always be not present in mud with the material such as ground barium sulfate, the present invention, when waste mud solidifies, has added a large amount of flyash, Ca in flyash (OH)
2all higher with the content of vitriol, it can be used as exciting agent and is applied in solidifying of waste mud.
The feature high according to drilling waste mud water ratio, while using drilling waste mud solidify material of the present invention to solidify, needs a large amount of bibulous materials that add.Consider cities in China generating and civilianly every year all will produce a large amount of flyash, flyash is also a great problem to the pollution of environment and the comprehensive regulation.Therefore, when drilling waste mud solidifies, use in large quantities flyash, realized the comprehensive regulation of refuse.Flyash is a kind of industrial waste with lateral reactivity, and it is as exciting component can impel waste mud to solidify, harden.Flyash plays the basic role aspect following 3 in drilling waste mud solidifies: (1) active effect: can be used as concrete bonding component, with the product of the similar cement CHS gel of calcium hydroxide generation secondary reflection generation, but it belongs to low activity mixing material; (2) shape effect: be the geometric properties such as general reference fly ash grain pattern, thickness, surfaceness, grating, external and internal compositions, and the effect that produces in fixed soil or concrete of the feature such as colourity, density, it mainly belongs to physical influence; (3) micro aggregate effect: just as fine aggregate, make the cement paste structure of newly mixing that " separating wadding " effect occur, and the tiny microballon of flyash plays filling effect, make capillary gap in slurry body structure " refinement ".
Drilling waste mud solidify material of the present invention is compared and has been shortened a large amount of engineering times with other solidify material, and other solidify material often take condensation cure 5～7 days, and drilling waste mud solidify material of the present invention is through rolling maintenance 24～48 hours and can having used.
Embodiment 1
Engineering test scene, well site of oil field road is positioned at the interspaced well working district of oil recovery factory, Yanchang Oilfield West five groups.Basis, former well site, owing to being drenched with rain and the reason such as wind erosion, is damaged comparatively serious.For ease of the basis, well site with new reparation, compare, the dark 2m of special basis one epitaxial lateral overgrowth of the well site in former damage carries out new well site foundation construction, and height is identical with basis, former well site.The well site foundation area of test section is 11.2m * 2.0m * 0.35m=7.84m
3.Concrete operation step is as follows:
Step 1, takes respectively SiO by mass percentage
255%, Al
2o
345%, said components mass percent sum is 100%, by the SiO taking
2and Al
2o
3fully be mixed and made into drilling waste mud solidify material;
Step 2, offer in advance hole groove, pour 4.8T drilling waste mud, 8T flyash, 1.4T water glass and 4.2T drilling waste mud solidify material (mass ratio is 1:1.67:0.3:0.8) into hole groove, add water and stir, after accumulation 1h, be layered on road surface through rolling maintenance 24h.
The road surface that utilizes the curing drilling waste mud of embodiment 1 to lay, through the observations of nearly 10 months (time span winter), the oil recovery factory, West of cooking major ingredient paving with drilling waste mud and flyash five groups of recovering the oil encrypt well site roads, wellblock and have good frost resistance, road surface non-cracking, more than well site road compactness strengthen reaches 0.8MPa, can guarantee 3 years～in 5 years, do not need repairing.
Embodiment 2
Step 1, takes respectively SiO by mass percentage
260%, Al
2o
340%, said components mass percent sum is 100%, by the SiO taking
2and Al
2o
3fully be mixed and made into drilling waste mud solidify material;
Step 2, offer in advance hole groove, pour 4.8T drilling waste mud, 7.2T flyash, 1.92T potassium silicate and 2.88T drilling waste mud solidify material (mass ratio is 1:1.5:0.4:0.6) into hole groove, add water and stir, after accumulation 1.5h, be layered on road surface through rolling maintenance 36h.
Embodiment 3
Step 1, takes respectively SiO by mass percentage
258%, Al
2o
342%, said components mass percent sum is 100%, by the SiO taking
2and Al
2o
3fully be mixed and made into drilling waste mud solidify material;
Step 2, offer in advance hole groove, pour 4.8T drilling waste mud, 7.68T flyash, 0.96T pure aluminium silicate and 24T drilling waste mud solidify material (mass ratio is 1:16:02:05) into hole groove, add water and stir, after accumulation 2h, be layered on road surface through rolling maintenance 48h.
Embodiment 4
Step 1, takes respectively SiO by mass percentage
256%, Al
2o
344%, said components mass percent sum is 100%, by the SiO taking
2and Al
2o
3fully be mixed and made into drilling waste mud solidify material;
Step 2, offer in advance hole groove, pour 4.8T drilling waste mud, 8.16T flyash, 2.4T water glass and 4.8T drilling waste mud solidify material (mass ratio is 1:1.7:0.5:1) into hole groove, add water and stir, after accumulation 1.8h, be layered on road surface through rolling maintenance 27h.
Claims (4)
1. a drilling waste mud solidify material, is characterized in that, composed of the following components by mass percentage, SiO
255%～60%, Al
2o
340%～45%, said components mass percent sum is 100%.
2. the method for utilizing the drilling waste mud solidify material described in claim 1 to solidify drilling waste mud, is characterized in that, concrete steps are as follows:
Step 1, takes respectively SiO by mass percentage
255%～60%, Al
2o
340%～45%, said components mass percent sum is 100%, by the SiO taking
2and Al
2o
3fully be mixed and made into drilling waste mud solidify material;
Step 2, offers hole groove in advance, pours drilling waste mud, flyash, setting accelerator and drilling waste mud solidify material into hole groove, adds water and stirs, and piles up after 1～2h and is layered on road surface through rolling maintenance 24～48h.
3. the method for utilizing drilling waste mud solidify material to solidify drilling waste mud according to claim 2, it is characterized in that, in step 2, the mass ratio of drilling waste mud, flyash, setting accelerator and drilling waste mud solidify material is 1:1.5～1.7:0.2～0.5:0.5～1.
4. according to the drilling waste mud solidify material that utilizes described in claim 2 or 3, solidify the method for drilling waste mud, it is characterized in that, in step 2, setting accelerator is water glass, potassium silicate or Tai-Ace S 150.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310506661.7A CN103570318B (en) | 2013-10-24 | 2013-10-24 | Curing material for drilling waste slurries as well as method thereof for curing drilling waste slurries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310506661.7A CN103570318B (en) | 2013-10-24 | 2013-10-24 | Curing material for drilling waste slurries as well as method thereof for curing drilling waste slurries |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103570318A true CN103570318A (en) | 2014-02-12 |
| CN103570318B CN103570318B (en) | 2015-06-24 |
Family
ID=50043118
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310506661.7A Expired - Fee Related CN103570318B (en) | 2013-10-24 | 2013-10-24 | Curing material for drilling waste slurries as well as method thereof for curing drilling waste slurries |
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| Country | Link |
|---|---|
| CN (1) | CN103570318B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439927A (en) * | 2018-04-11 | 2018-08-24 | 湖北工业大学 | A kind of drilling mud curing materials prepared by wet grinding |
| CN113860840A (en) * | 2021-11-02 | 2021-12-31 | 青岛理工大学 | Roadbed material prepared from waste slurry and application thereof |
| CN115557738A (en) * | 2022-10-24 | 2023-01-03 | 宁夏新大地环保科技工程有限公司 | Roadbed filling material and manufacturing method thereof |
| CN116023107A (en) * | 2022-12-15 | 2023-04-28 | 河北邦业环保科技有限公司 | Quick-drying solid agent for preparing water-based slurry drilling cuttings and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707028A (en) * | 2002-08-06 | 2005-12-14 | 张杞 | Solid curing agent for making road |
| CN1884155A (en) * | 2006-07-03 | 2006-12-27 | 张明罡 | Curing agent for waste drilling mud and use method therefor |
-
2013
- 2013-10-24 CN CN201310506661.7A patent/CN103570318B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707028A (en) * | 2002-08-06 | 2005-12-14 | 张杞 | Solid curing agent for making road |
| CN1884155A (en) * | 2006-07-03 | 2006-12-27 | 张明罡 | Curing agent for waste drilling mud and use method therefor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108439927A (en) * | 2018-04-11 | 2018-08-24 | 湖北工业大学 | A kind of drilling mud curing materials prepared by wet grinding |
| CN113860840A (en) * | 2021-11-02 | 2021-12-31 | 青岛理工大学 | Roadbed material prepared from waste slurry and application thereof |
| CN113860840B (en) * | 2021-11-02 | 2022-07-29 | 青岛理工大学 | Roadbed material prepared from waste slurry and application thereof |
| CN115557738A (en) * | 2022-10-24 | 2023-01-03 | 宁夏新大地环保科技工程有限公司 | Roadbed filling material and manufacturing method thereof |
| CN116023107A (en) * | 2022-12-15 | 2023-04-28 | 河北邦业环保科技有限公司 | Quick-drying solid agent for preparing water-based slurry drilling cuttings and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN103570318B (en) | 2015-06-24 |
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Granted publication date: 20150624 Termination date: 20171024 |
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