CN1050860A - The machine shaft kiln is produced 75 ℃ of oil well cements - Google Patents
The machine shaft kiln is produced 75 ℃ of oil well cements Download PDFInfo
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- CN1050860A CN1050860A CN 89107712 CN89107712A CN1050860A CN 1050860 A CN1050860 A CN 1050860A CN 89107712 CN89107712 CN 89107712 CN 89107712 A CN89107712 A CN 89107712A CN 1050860 A CN1050860 A CN 1050860A
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- oil well
- cement
- well cement
- shaft kiln
- production
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Abstract
Oil well cement is the special silicate cement that is used for oil well and gas well casing and cementing.Though China has produced decades, all to produce with rotary kiln, there is the energy consumption height in rotary kiln production, and factory is few, and supply falls short of demand to make oil well cement.The present invention has opened up a new production approach for oil well cement production, adopts and has both satisfied the oil well cement performance requriements, is fit to the proportion scheme of cement equipment shaft kiln calcining characteristics again, has produced qualified oil well cement.
Description
The present invention is exclusively used in well depth in 1500～2500 meters the oil well and the special silicate cement of gas well casing and cementing.
Though oil well cement has production decades history in China, all to produce with rotary kiln, generally there is the energy consumption height in rotary kiln production, and manufacturer is few simultaneously.
The objective of the invention is for saving coal, electricity and refractory brick consumption, it is in short supply to alleviate oil well cement, for a new production approach is opened up in oil well cement production.
To the technical requirements of the oil well cement requirement height than ordinary Portland cement, the mineral composition of grog also has than big difference, for satisfying the performance requriements of oil well cement, is fit to the calcining characteristics of cement equipment shaft kiln again, and each rate value scope of its grog is as follows:
KH＝0.85～0.97
n＝1.9～2.7
p＝0.6～0.95
Rate value situation according to the oil well cement grog adopts corresponding method for calcinating, and firing temperature is controlled at 1300～1450 ℃.
For improving clinker quality, improve calcination condition, reduce coal consumption, can mix an amount of single mineralizer or composite mineralizer, when using fluorescent mineralizer, grog CaF2 content should be controlled at below 1.6%.
For controlling time of coagulation, improve cement performance, must correctly select the kind and the strict control incorporation of retardant for use.
When selecting for use dihydrate gypsum to make retardant, So3 content should be controlled between the 2-3% and be advisable.
Use the oil well cement of cement equipment shaft kiln production technique and device fabrication, quality product can reach national standard and API standard.On-the-spot practical through Shengli Oil Field, cementing quality is all qualified, and the well cementation factor of merit reaches 77%.
Use rotary kiln production well cement with machine shaft kiln production well cement, cement per ton can be saved 71.4 kilograms in coal of mark, economize on electricity 8 degree, and kliner coating easily comes off when having solved with rotary kiln production well cement, firebrick loss is big, and cement per ton can be saved 0.8 kilogram on refractory brick.These three totals only, cement cost per ton can reduce by 13.18 yuan.
China machine shaft kiln manufacturer is many, adopts present technique production well cement, and it is in short supply to solve oil well cement, and can accomplish to produce nearby, supplies nearby, overcomes the difficulty of long-distance transport.
Embodiment: advance factory's material and check and accept through metering, store and homogenizing in the stockyard, Wingdale, iron ore, fluorite are gone into the storehouse, garden after the two-stage fragmentation; Go into the storehouse, garden after clay, coal and the slag drying; Gypsum is broken laggard storehouse through Hubei Province.
Raw material are prepared as one on 2.2 * 6.5 meters circle stream of ∮ mill, press grog rate value KH=0.94, n=2.25, p=0.75 prepares burden, the bottom of the reservior batching adopts microcomputer control, going out to grind raw material stirs the storehouse by sky and carries out homogenizing, enter raw material storage storehouse then, 2.2 * 8 meters pendulum roller type machines of two ∮ shaft kiln (2.5 * 10 meters tower machine shaft kilns of dish of also available ∮) all uses control pre-watering granulation novel process automatically, shaft kiln adopts complete black meal to close door operation new technology and microcomputer control, the kiln discharge grog enters storehouse, grog garden after drag conveyer and thin jaw crusher fragmentation, grog, slag and gypsum are prepared burden through the bottom of the reservior burden balance and are ground into abrasive dust, go out to grind cement through reamer, lift enters cement silo, goes into two wrapping machine packings of chewing again and dispatch from the factory after the collocation of many storehouses, or enter storehouse in bulk and dispatch from the factory.
Cement quality all reaches 75 ℃ of oil well cement national standards through the check of national cement quality inspection center.Proportion, degree of mobilization and time of coagulation are higher than national standard according to user's requirement.Assay is as follows:
Cement type: 75 degree oil well cements
Clean slurry proportion: 1.86(〉=1.86)
Fineness (%): 5.6(≤15)
Stability (boil and boil): qualified (qualified)
Initial set: 2: 19(1: 45-3: 30)
Final set: 2: 37(final set-initial set≤1: 30)
Grout degree of mobilization (MM): 222(〉=195)
48 hours folding strength: 6.6MPA(〉=5.4)
Sulphur trioxide (%): 2.8(≤3.5)
Annotate: the numeral in the bracket is the national standard of 75 ℃ of oil well cements.
Claims (5)
1,75 ℃ of oil well cements are to be exclusively used in well depth in 1500～2500 meters the oil well and the special silicate cement of gas well casing and cementing, feature of the present invention is to be changed into the production of machine shaft kiln by rotary kiln production, and adopted suitable mechanical shaft kiln burning characteristics to satisfy the proportion scheme of 75 ℃ of oil well cement performance requriementss again, and corresponding method for calcinating, used mineralizer and retardant simultaneously.
2, oil well cement as claimed in claim 1 is characterized in that each rate value scope of its grog is as follows according to 75 ℃ of oil well cement performance demands and cement equipment shaft kiln calcining characteristics:
KH＝0.85～0.97
n＝1.9～2.7
p＝0.6～0.95
3, oil well cement as claimed in claim 1 is characterized in that the rate value according to mechanical shaft kiln burning oil well cement grog, and firing temperature is controlled at 1300～1450 ℃.
4, oil well cement as claimed in claim 1 is characterized in that using fluorescent mineralizer, and grog CaF2 content is controlled at below 1.6%.
5, oil well cement as claimed in claim 1 is characterized in that selecting for use dihydrate gypsum to make retardant, and So3 content is advisable between being controlled at 2～3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107712 CN1050860A (en) | 1989-10-13 | 1989-10-13 | The machine shaft kiln is produced 75 ℃ of oil well cements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107712 CN1050860A (en) | 1989-10-13 | 1989-10-13 | The machine shaft kiln is produced 75 ℃ of oil well cements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1050860A true CN1050860A (en) | 1991-04-24 |
Family
ID=4857311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89107712 Pending CN1050860A (en) | 1989-10-13 | 1989-10-13 | The machine shaft kiln is produced 75 ℃ of oil well cements |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050860A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048965C (en) * | 1995-10-24 | 2000-02-02 | 淄博市张店特种水泥工业集团公司 | Oil-well cement |
| CN1064332C (en) * | 1994-03-04 | 2001-04-11 | 宜宾科技咨询服务中心芙蓉矿务局服务部 | Special anchoring cement |
| CN1298655C (en) * | 2003-03-31 | 2007-02-07 | 四川嘉华企业（集团）股份有限公司 | Quick-hardening earyly-strenthening cement for oil well |
| CN111825355A (en) * | 2019-09-12 | 2020-10-27 | 尧柏特种水泥技术研发有限公司 | Low-thixotropy oil well cement |
-
1989
- 1989-10-13 CN CN 89107712 patent/CN1050860A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064332C (en) * | 1994-03-04 | 2001-04-11 | 宜宾科技咨询服务中心芙蓉矿务局服务部 | Special anchoring cement |
| CN1048965C (en) * | 1995-10-24 | 2000-02-02 | 淄博市张店特种水泥工业集团公司 | Oil-well cement |
| CN1298655C (en) * | 2003-03-31 | 2007-02-07 | 四川嘉华企业（集团）股份有限公司 | Quick-hardening earyly-strenthening cement for oil well |
| CN111825355A (en) * | 2019-09-12 | 2020-10-27 | 尧柏特种水泥技术研发有限公司 | Low-thixotropy oil well cement |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |