CN101955235A - Curing agent for treating waste drilling fluid - Google Patents
Curing agent for treating waste drilling fluid Download PDFInfo
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- CN101955235A CN101955235A CN 201010172416 CN201010172416A CN101955235A CN 101955235 A CN101955235 A CN 101955235A CN 201010172416 CN201010172416 CN 201010172416 CN 201010172416 A CN201010172416 A CN 201010172416A CN 101955235 A CN101955235 A CN 101955235A
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- cement
- well drilling
- magnesium oxide
- sodium bentonite
- drilling liquid
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Abstract
The invention relates to a curing agent for treating waste drilling fluids, which consists of ferric chloride, sodium bentonite, magnesium oxide and cement, wherein the mass ratio of the ferric chloride to the sodium bentonite to the magnesium oxide to the cement is 44.0-44.5:4.0-4.5:44.1-45.0:7.4-7.8. The curing agent for treating the waste drilling fluids has good curing effect; and the water quality of leach liquor obtained after the waste drilling fluids are cured meets the Integrated Wastewater Discharge Standard (GB8978-1996).
Description
Technical field
The present invention relates to a kind of solidifying agent of petroleum prospecting completion aftertreatment rejected well drilling liquid, the good solidifying agent of particularly a kind of solidification effect.
Background technology
In petroleum prospecting with take in the process, (rejected well drilling liquid is the multinomial stable colloidal suspension of a kind of argillaceous, high-density weighting material, various chemical processing agent, sewage, sump oil and drilling cuttings etc. can to stay a large amount of rejected well drilling liquids and drilling cuttings on the well site.Modifiers such as impurity in main component hydro carbons wherein, salt, each base polymer, heavy metal ion, the barite and pitch, can cause serious harm to environment), these rejected well drilling liquids retain in the well site storage place, along with the seepage of storage pool, overflow, flood etc., may produce detrimentally affect to underground water and surface water, and jeopardize ecotope on every side, even may pollute accident.
Along with the raising of people's environmental consciousness in recent years and the country increasingly stringent to environmental protection requirement, environment protection is had higher requirement to oil play.In order to realize Sustainable development, instant stage has been arrived in the processing of rejected well drilling liquid.Comparatively speaking, list is handled relatively difficulty from mechanical conditions, the use chemical agent is more convenient, the general chemical floc that uses is organic and inorganic two kinds, have characteristics such as consumption is few, flocculation ability is strong, treatment effect is good, the generation scum silica frost is few for organic floculant, but price is higher relatively; And the inorganic flocculating agent advantage is that low price, throwing out are strong, and shortcoming is that dosage is big, and set time is longer, and solidification effect is undesirable, leach liquor water quality does not meet " integrated wastewater discharge standard " (GB8978-1996), and damage ratio is more serious.
Summary of the invention
For this reason, technical problem to be solved by this invention is to provide that a kind of solidification effect is good, leach liquor water quality meets " integrated wastewater discharge standard " solidifying agent that is used to handle rejected well drilling liquid (GB8978-1996).
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions: a kind of solidifying agent that is used to handle rejected well drilling liquid, described solidifying agent is made up of iron trichloride, sodium bentonite, magnesium oxide and cement, and the ratio of the quality of iron trichloride, sodium bentonite, magnesium oxide, cement is: iron trichloride: sodium bentonite: magnesium oxide: cement=44.0-44.5: 4.0-4.5: 44.1-45.0: 7.4-7.8.
The above-mentioned solidifying agent that is used to handle rejected well drilling liquid, iron trichloride: sodium bentonite: magnesium oxide: cement=44.3: 4.3: 44.6: 7.6.
Technique scheme of the present invention has the following advantages compared to existing technology: (1) has characteristics such as add-on is little, cost is low, processing speed is fast, good stability.(2) the rejected well drilling liquid cured body solidified after 6 days certain compression strength, and leach liquor water quality meets " integrated wastewater discharge standard " (GB8978-1996).(3) this curing can effectively be controlled in the waste drilling fluid objectionable impurities to the influence and the harm of water body, soil and ecotope.The solid material that forms can be paved the way and be waited comprehensive utilization, also can bury back recovery landforms, and the soil that takies very soon can farmland to field, has thoroughly eliminated the pollution of rejected well drilling liquid to environment.(4) not only fixed rejected well drilling liquid, and with the objectionable impurities in the rejected well drilling liquid (as heavy metal, superpolymer, etc.), sealing is wrapped in wherein, reduces its diafiltration and transporting action, reaches the purpose of preventing and remedying pollution.
Embodiment
Embodiment 1
Present embodiment is used to handle the solidifying agent of rejected well drilling liquid and is made up of iron trichloride, sodium bentonite, magnesium oxide and cement, and the ratio of the quality of iron trichloride, sodium bentonite, magnesium oxide, cement is: iron trichloride: sodium bentonite: magnesium oxide: cement=44.3: 4.3: 44.6: 7.6.
The initial composition of rejected well drilling liquid contains fresh water bentonite slurry, KPAM, NH
4-HPAN, methylglucoside and sulfonated gilsonite etc.
Get the 100g rejected well drilling liquid, add the solidifying agent of present embodiment respectively, stir, pour in the fixed container model, six hours postevaluation solidification effects, as shown in table 1:
Table 1
Annotate: the quality that 11.0% expression adds solidifying agent is 11% (the dosage implication among the experiment 2-7 is identical) of rejected well drilling liquid total mass.In the solidification effect column of table 1,1 expression solidification effect is fine, and 2 expression solidification effects are good, and 3 expression solidification effects are general; Can draw thus, solidification effect was best when dosage was the 9%-10% of rejected well drilling liquid total mass.
The solid that solidifies back formation is soaked the character that water is soaked in 24 hours (25 ℃) back in tap water:
Table 2
| The character of water (mg/L) | Cured body leach liquor (mg/L) |
| PH value | 7 |
| COD | ≤200 |
| Petroleum-type | ≤10 |
| Total chromium | ≤0.01 |
Embodiment 2
Present embodiment is used to handle the solidifying agent of rejected well drilling liquid and is made up of iron trichloride, sodium bentonite, magnesium oxide and cement, and the ratio of the quality of iron trichloride, sodium bentonite, magnesium oxide, cement is: iron trichloride: sodium bentonite: magnesium oxide: cement=44: 4: 44.1: 7.4.
The initial composition of rejected well drilling liquid contains fresh water bentonite slurry, KPAM, NH
4-HPAN, methylglucoside and sulfonated gilsonite etc.
Get the 100g rejected well drilling liquid, add the solidifying agent of present embodiment respectively, stir, pour in the fixed container model, six hours postevaluation solidification effects, as shown in table 3:
Table 3
Annotate: the quality that 11.0% expression adds solidifying agent is 11% (the dosage implication among the experiment 2-7 is identical) of rejected well drilling liquid total mass.In the solidification effect column of table 1,1 expression solidification effect is fine, and 2 expression solidification effects are good, and 3 expression solidification effects are general; Can draw thus, solidification effect was best when dosage was the 8.5%-10% of rejected well drilling liquid total mass.
The solid that solidifies back formation is soaked the character that water is soaked in 24 hours (25 ℃) back in tap water:
Table 2
| The character of water (mg/L) | Cured body leach liquor (mg/L) |
| PH value | 7.5 |
| COD | ≤150 |
| Petroleum-type | ≤5 |
| Total chromium | ≤0.005 |
Embodiment 3
Present embodiment is used to handle the solidifying agent of rejected well drilling liquid and is made up of iron trichloride, sodium bentonite, magnesium oxide and cement, and the ratio of the quality of iron trichloride, sodium bentonite, magnesium oxide, cement is: iron trichloride: sodium bentonite: magnesium oxide: cement=44.3: 4.3: 44.6: 7.6.
The initial composition of rejected well drilling liquid contains fresh water bentonite slurry, KPAM, NH
4-HPAN, methylglucoside and sulfonated gilsonite etc.
Get the 100g rejected well drilling liquid, add the solidifying agent of present embodiment respectively, stir, pour in the fixed container model, six hours postevaluation solidification effects, as shown in table 3:
Table 3
Annotate: the quality that 11.0% expression adds solidifying agent is 11% (the dosage implication among the experiment 2-7 is identical) of rejected well drilling liquid total mass.In the solidification effect column of table 1,1 expression solidification effect is fine, and 2 expression solidification effects are good, and 3 expression solidification effects are general; Can draw thus, solidification effect was best when dosage was the 9%-10.5% of rejected well drilling liquid total mass.
The solid that solidifies back formation is soaked the character that water is soaked in 24 hours (25 ℃) back in tap water:
Table 2
| The character of water (mg/L) | Cured body leach liquor (mg/L) |
| PH value | 8 |
| COD | ≤180 |
| Petroleum-type | ≤5 |
| Total chromium | ≤0.002 |
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (2)
1. solidifying agent that is used to handle rejected well drilling liquid, it is characterized in that, described solidifying agent is made up of iron trichloride, sodium bentonite, magnesium oxide and cement, and the ratio of the quality of iron trichloride, sodium bentonite, magnesium oxide, cement is: iron trichloride: sodium bentonite: magnesium oxide: cement=44.0-44.5: 4.0-4.5: 44.1-45.0: 7.4-7.8.
2. the solidifying agent that is used to handle rejected well drilling liquid according to claim 1 is characterized in that iron trichloride: sodium bentonite: magnesium oxide: cement=44.3: 4.3: 44.6: 7.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010172416 CN101955235A (en) | 2010-05-14 | 2010-05-14 | Curing agent for treating waste drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010172416 CN101955235A (en) | 2010-05-14 | 2010-05-14 | Curing agent for treating waste drilling fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101955235A true CN101955235A (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010172416 Pending CN101955235A (en) | 2010-05-14 | 2010-05-14 | Curing agent for treating waste drilling fluid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295939A (en) * | 2015-10-23 | 2016-02-03 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Curing agent for petroleum drilling clean production and preparing method of curing agent |
| CN111704433A (en) * | 2020-07-02 | 2020-09-25 | 中国海洋石油集团有限公司 | Composite curing agent and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136542A (en) * | 1995-05-23 | 1996-11-27 | 黄彰标 | High strength light concrete product and its producing method |
| CN1307913A (en) * | 2001-01-02 | 2001-08-15 | 魏国文 | Land innocuous treatment technology for waste drilling fluid of oil well |
| CN1342505A (en) * | 2000-09-08 | 2002-04-03 | 石油大学(北京) | Solidification process for treating waste water-base drilling liquid and its solidifying agent |
| CN1590305A (en) * | 2004-06-14 | 2005-03-09 | 石油大学(北京) | Treatment method of spent oil in water well drilling liquid treatment agent |
-
2010
- 2010-05-14 CN CN 201010172416 patent/CN101955235A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1136542A (en) * | 1995-05-23 | 1996-11-27 | 黄彰标 | High strength light concrete product and its producing method |
| CN1342505A (en) * | 2000-09-08 | 2002-04-03 | 石油大学(北京) | Solidification process for treating waste water-base drilling liquid and its solidifying agent |
| CN1307913A (en) * | 2001-01-02 | 2001-08-15 | 魏国文 | Land innocuous treatment technology for waste drilling fluid of oil well |
| CN1590305A (en) * | 2004-06-14 | 2005-03-09 | 石油大学(北京) | Treatment method of spent oil in water well drilling liquid treatment agent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295939A (en) * | 2015-10-23 | 2016-02-03 | 中国石油集团川庆钻探工程有限公司长庆钻井总公司 | Curing agent for petroleum drilling clean production and preparing method of curing agent |
| CN111704433A (en) * | 2020-07-02 | 2020-09-25 | 中国海洋石油集团有限公司 | Composite curing agent and application thereof |
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Application publication date: 20110126 |