CN1298655C - Quick-hardening earyly-strenthening cement for oil well - Google Patents
Quick-hardening earyly-strenthening cement for oil well Download PDFInfo
- Publication number
- CN1298655C CN1298655C CNB031175635A CN03117563A CN1298655C CN 1298655 C CN1298655 C CN 1298655C CN B031175635 A CNB031175635 A CN B031175635A CN 03117563 A CN03117563 A CN 03117563A CN 1298655 C CN1298655 C CN 1298655C
- Authority
- CN
- China
- Prior art keywords
- cement
- oil well
- early
- strength
- under
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004568 cement Substances 0.000 title claims abstract description 75
- 239000003129 oil well Substances 0.000 title claims abstract description 39
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims abstract description 12
- AGWMJKGGLUJAPB-UHFFFAOYSA-N aluminum;dicalcium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Ca+2].[Ca+2].[Fe+3] AGWMJKGGLUJAPB-UHFFFAOYSA-N 0.000 claims abstract description 6
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 claims abstract description 6
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 6
- 239000011707 mineral Substances 0.000 claims abstract description 6
- 229910021534 tricalcium silicate Inorganic materials 0.000 claims abstract description 6
- 235000019976 tricalcium silicate Nutrition 0.000 claims abstract description 6
- 235000019739 Dicalciumphosphate Nutrition 0.000 claims description 5
- 239000001506 calcium phosphate Substances 0.000 claims description 5
- NEFBYIFKOOEVPA-UHFFFAOYSA-K dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 claims description 5
- 229940038472 dicalcium phosphate Drugs 0.000 claims description 5
- 229910000390 dicalcium phosphate Inorganic materials 0.000 claims description 5
- 235000010755 mineral Nutrition 0.000 claims description 5
- 235000013619 trace mineral Nutrition 0.000 claims description 5
- 239000011573 trace mineral Substances 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052918 calcium silicate Inorganic materials 0.000 abstract 1
- 235000012241 calcium silicate Nutrition 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000015271 coagulation Effects 0.000 abstract 1
- 238000005345 coagulation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 230000008719 thickening Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 239000011440 grout Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229960004418 trolamine Drugs 0.000 description 1
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention belongs to quick-hardening early-strengthening cement for oil wells, which can be used in surface layers and superficial layers of oil fields for well cementing. The present invention is characterized in that the cement is prepared from mineral components such as tricalcium silicate, tricalcium aluminate, sulfur trioxide, dicalcium silicate, tetracalcium aluminoferrite, etc. When the cement is used, early-strength agent can be added into the cement. The preparing technology of the cement has the characteristics that external admixtures are mixed into prepared and calcined clinker during the milling preparation of the cement according to the requirements of cement components. Compared with the existing oil well cement, the cement has the advantages of high early strength, low water loss, less expansion, short coagulation waiting time, etc.
Description
Technical field
The present invention relates to cement, particularly a kind of high-early-strength oil well cement that can be used for top layer, oil field, shallow-layer well cementation.
Background technology
At present, what oil field surface casing cementing, shallow-layer well cementation were generally adopted is A level oil well cement, in order to reach the well cementation requirement of oil well, often adopt oil well cement to add the method for multiple admixture, and this method makes that the site operation workload is big, complex procedures is cumbersome, the well cementation cycle is long, the well cementation cost improves the value of used cement (value of the general used admixture of reinforcing oil well cement the well no better than) greatly, under special geological condition, adopt existing oil well cement and cementing method, its cementing quality is difficult to guarantee.Adopt the situation that G level, A level oil well cement and cementing method are cemented the well that has now as what Zhongyuan Petroleum Exploration Bureau casing and cementing place provided in area, Songyuan City, China Jilin Province, because the peripheral water injection well in area, Songyuan City is many, though before well cementation, close, but not release, under static state, high pressure water is easy to disturb the grout gluing, has caused cementing quality poor.According to the reinforcing oil well job requirements save cost, shorten curing time, in order to the developing direction of accelerating drilling speed, for satisfying this market demand, be necessary to develop new oil well cement.
Summary of the invention
In order to overcome the deficiencies in the prior art, solve present reinforcing oil well with the problem that oil well cement exists, the invention provides a kind of high-early-strength oil well cement.
The technical solution adopted for the present invention to solve the technical problems is:
The high-early-strength oil well cement is characterized in that its mineral component and weight percent are:
Tricalcium silicate 50～65, tricalcium aluminate 1～8, sulphur trioxide 1.5～3.5, tetracalcium aluminoferrite 10～15, all the other are Dicalcium Phosphate (Feed Grade) and other trace element.
High-early-strength oil well cement of the present invention can add 0～5% hardening accelerator under service condition, its hardening accelerator is CaCl
2, Na
2SO
4Perhaps trolamine etc.
Implement the preparation technology of high-early-strength oil well cement, it is characterized in that when cement grinding prepares, mixing extra material according to cement component requirement preparation, incinerating grog, the water content of extra material is less than 1.0%, mill feed size is less than 25mm, incorporation is 0～10%, and described extra material is Wingdale, coal gangue, mine tailing or its combination.
Beneficial effect of the present invention is that it has excellent properties such as the high and low dehydration of early strength, microdilatancy, curing time weak point.
(1) oil well cement early strength height of the present invention.Under identical condition, it is faster than the early strength development of present all kinds of oil well cements, and the intensity height.This cement is 8 hours requirement of strength 6.5MPa under 38 ℃, condition of normal pressure, and is actual in more than the 7.5MPa, and A level oil well cement national standard under similarity condition requires to be not less than 1.7MPa, and actual strength is about 4.5MPa; Cement of the present invention under 38 ℃, condition of normal pressure, more than 24 hours requirement of strength 15MPa, actual strength up to 20MPa about, and A level oil well cement national standard under similarity condition requires to be not less than 12.4MPa, actual strength is about 15MPa.
Cement of the present invention mixes 0～5% hardening accelerator (as: CaCl
2), under initial consistency that satisfies construction and thickening time prerequisite, under 38 ℃, condition of normal pressure, intensity was up to more than the 15MPa in 8 hours.The requirement of strength of cement stone perforation is 13.8MPa, so cement of the present invention is compared with A level oil well cement, can under the situation of a small amount of hardening accelerator of admixture, reach cement stone perforation requirement of strength very soon, performance with high-early-strength, oil wells in field has shortened the well cementation cycle in using.
(2) initial consistency and thickening time are satisfied top layer, oil field, shallow-layer well cementation fully, and it is big to have the thickening time variable range, but the pump time is long.Its grout of cement of the present invention is at 0.44 water cement ratio, under 40 ℃, 20MPa, the condition that heated up in 20 minutes, and thickening time＞90min, but 70～90 minutes pump time, (0～40BC), the denseness of 15～30min was no more than 25BC.Mix 0～5% hardening accelerator CaCl2, the thickening time can transfer to 40～70min, and the denseness of 15～30min is less than 30.0BC.The initial consistency that the method for Oilfield using oil well cement admixture admixture in the past of having solved is difficult to overcome and the difficult problem of thickening time contradiction.
(3) it is low to have a free liquid, little moisture loss, the characteristics of microdilatancy.Its grout is under 0.44 water cement ratio, normal temperature, non-pressurized condition, and free liquid is less than 2.0ml, and actual tests free liquid as a result is almost 0; Under 0.44 water cement ratio, 40 ℃, 7MPa pressure condition, the API of magma, 30 minutes fluid losses be less than 1100ml, and conventional oil well cement under similarity condition API, 30 minutes fluid losses greater than 1500ml.The sinking dehydration helps improving cementing quality, and cement stone do not have the drying shrinkage phenomenon, has the microdilatancy characteristics.
Owing to have These characteristics, in actual use, high-early-strength oil well cement of the present invention can shorten completion period, just can reach the site operation requirement under the situation that does not add or add less admixture, thereby has saved the well cementation cost.Also can realize high epistasis energy early at low temperatures, thereby widen the use range of cement.The low free liquid characteristics that had can be protected layer of oil gas production, and microdilatancy has improved the cementing power of cement stone and sleeve pipe, the borehole wall, helps improving cementing quality, compares with conventional oil well cement, are more suitable for the requirement of top layer, oil field, shallow-layer well cementation.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1:
Mineral component: tricalcium silicate (C
3S) 50.44%, tricalcium aluminate (C
3A) 7.67%, sulphur trioxide (SO
3) 1.94%, Dicalcium Phosphate (Feed Grade) (C
2S) 26.03%, tetracalcium aluminoferrite (C
4AF) 10.18%, all the other are trace elements such as magnesium oxide, titanium oxide, alkali content.
The high-early-strength oil well cement of producing by this component, under 0.44 water cement ratio, 40 ℃, 20MPa, the condition that heated up in 20 minutes, 15～30 minutes initial consistencies are 20.0BC, the thickening time is 129 minutes; Under water cement ratio 0.44, the condition of normal pressure, ultimate compression strength was 7.5MPa in 38 ℃, 8 hours, and 24 hours ultimate compression strength is 18.5MPa; Under water cement ratio 0.44, normal temperature, the condition of normal pressure, the grout free liquid is 0.2ml.
Mix 1.5% hardening accelerator and (select CaCl for use
2):
Under the water cement ratio 0.44,40 ℃, 20MPa, 20 minutes intensification conditions, 15～30 minutes initial consistencies are 25.0BC, 61 minutes thickening times; Under water cement ratio 0.44, the condition of normal pressure, ultimate compression strength was 16.7MPa in 38 ℃, 8 hours.
Embodiment 2:
Mineral component: tricalcium silicate (C
3S) 53.54%, tricalcium aluminate (C
3A) 7.49%, sulphur trioxide (SO
3) 2.21%, Dicalcium Phosphate (Feed Grade) (C
2S) 21.59%, tetracalcium aluminoferrite (C
4A F) 10.12%, all the other are trace elements such as magnesium oxide, titanium oxide, alkali content, mix Wingdale 1.0% outward.
The high-early-strength oil well cement of producing by this component, under 0.44 water cement ratio, 40 ℃, 20MPa, the condition that heated up in 20 minutes, 15～30 minutes initial consistencies are 15.0BC, the thickening time is 121 minutes; Under water cement ratio 0.44, the condition of normal pressure, ultimate compression strength was 8.0MPa in 38 ℃, 8 hours, and 24 hours ultimate compression strength is 20.5MPa; Under water cement ratio 0.44, normal temperature, the condition of normal pressure, the grout free liquid is 0.6ml.
Mix 2.0% hardening accelerator and (select CaCl for use
2):
Under the water cement ratio 0.44,40 ℃, 20MPa, 20 minutes intensification conditions, 15～30 minutes initial consistencies are 26.0BC, 56 minutes thickening times; Under water cement ratio 0.44, the condition of normal pressure, ultimate compression strength was 19.3MPa in 38 ℃, 8 hours.
The production unit and the technical process of the production unit of cement slurry of the present invention and grog and z-E flow process and other oil well cement basic identical (omitting technological process of production figure), difference mainly is according to its extra material that requirement of cement component is prepared, the incinerating grog has mixed 0～l0% when cement grinding prepares.This extra material is wherein one or any a kind of combination of Wingdale, coal gangue, mine tailing, mixes when cement grinding prepares after fragmentation, oven dry, and its water content is less than 1.0%, and mill feed size is less than 25mm.
More than the index of two embodiment all can substantially exceed standard-required, the well cementation use properties is good through the scene, cementing quality is excellent.
The physicals contrast of high-early-strength oil well cement and A level oil well cement:
| Kind | Water quality | Water cement ratio | The admixture kind | 15-30min denseness BC | But 0-40BC pump time m1n | 40 ℃, 20 MPa thickening time min | 38 ℃, 8h intensity MPa | 38 ℃, 24h intensity MPa | Free liquid ml | |
| A level oil well cement | Requirement | Distilled water | 0.46 | / | ≤30.0 | / | ≥90* | ≥1.7 | ≥12.4 | / |
| Actual | Distilled water | 0.46 | / | 16.8 | / | 151* | 4.5 | 14.9 | / | |
| The high-early-strength oil well cement | Requirement | Distilled water | 0.44 | / | ≤25.0 | ≥75 | ≥90 | ＞6.5 | ＞15.0 | ≤2.0 |
| Actual | Distilled water | 0.44 | / | 15.0 | 89 | 124 | 8.1 | 20.1 | 0.1 | |
| Requirement | Tap water | 0.44 | CaCl 2 | ≤30.0 | / | 40-70 | ＞15.0 | / | / | |
| Actual | Tap water | 0.44 | CaCl 2 | 22.0 | 37 | 53 | 18.0 | / | / | |
Annotate:
*The thickening time of A level oil well cement under 45 ℃, 26.7MPa condition.
Claims (2)
1, a kind of high-early-strength oil well cement, it is characterized in that: mineral component and weight proportion are:
Tricalcium silicate C
3S50.44%
Tricalcium aluminate C
3A7.67%
Sulphur trioxide SO
31.94%
Dicalcium Phosphate (Feed Grade) C
2S26.03%
Tetracalcium aluminoferrite C
4AF10.18%
All the other are trace element.
2, a kind of high-early-strength oil well cement, it is characterized in that: mineral component and weight proportion are:
Tricalcium silicate C
3S53.54%
Tricalcium aluminate C
3A7.49%
Sulphur trioxide SO
32.21%
Dicalcium Phosphate (Feed Grade) C
2S21.59%
Tetracalcium aluminoferrite C
4AF10.12%
All the other are trace element, and above-mentioned grog is mixed Wingdale 1.0% outside when cement grinding prepares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031175635A CN1298655C (en) | 2003-03-31 | 2003-03-31 | Quick-hardening earyly-strenthening cement for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031175635A CN1298655C (en) | 2003-03-31 | 2003-03-31 | Quick-hardening earyly-strenthening cement for oil well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1454860A CN1454860A (en) | 2003-11-12 |
| CN1298655C true CN1298655C (en) | 2007-02-07 |
Family
ID=29260143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031175635A Expired - Lifetime CN1298655C (en) | 2003-03-31 | 2003-03-31 | Quick-hardening earyly-strenthening cement for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1298655C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2261322C1 (en) * | 2004-05-13 | 2005-09-27 | Открытое акционерное общество "Акционерная нефтяная компания "Башнефть" | Grouting mortar |
| CN102942314B (en) * | 2012-11-30 | 2014-07-09 | 广西鱼峰水泥股份有限公司 | Oil well cement and production method thereof |
| CN112094060A (en) * | 2020-09-27 | 2020-12-18 | 大连水泥集团有限公司 | High-temperature well cementation cement and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149900A (en) * | 1977-02-28 | 1979-04-17 | Halliburton Company | Oil well cementing composition |
| CN1050860A (en) * | 1989-10-13 | 1991-04-24 | 淄博市临淄水泥厂 | The machine shaft kiln is produced 75 ℃ of oil well cements |
| CN1148577A (en) * | 1995-10-24 | 1997-04-30 | 淄博市张店特种水泥工业集团公司 | Oil-well cement |
-
2003
- 2003-03-31 CN CNB031175635A patent/CN1298655C/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4149900A (en) * | 1977-02-28 | 1979-04-17 | Halliburton Company | Oil well cementing composition |
| CN1050860A (en) * | 1989-10-13 | 1991-04-24 | 淄博市临淄水泥厂 | The machine shaft kiln is produced 75 ℃ of oil well cements |
| CN1148577A (en) * | 1995-10-24 | 1997-04-30 | 淄博市张店特种水泥工业集团公司 | Oil-well cement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1454860A (en) | 2003-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2727422C (en) | Wellbore servicing compositions comprising a density segregation inhibiting composite and methods of making and using same | |
| CN104371678A (en) | Expanded flexible well cementing grout and preparation method thereof | |
| CN100344723C (en) | Comprehensive performace regulator for well cementing cement slurry and its prepn | |
| CN110862246A (en) | A kind of elastic toughness resin cement slurry for well cementing and preparation method thereof | |
| CN112456873A (en) | Well cementation cement slurry suitable for coal bed gas and preparation method thereof | |
| CN107140922A (en) | Road quick patching mortar and its production method | |
| CN109761547A (en) | A kind of well cementing mortar architecture of suitable shale gas horizontal well large size staged fracturing | |
| CN108675752B (en) | High-strength high-temperature-resistant anti-erosion oil well cement and preparation method thereof | |
| CN1298655C (en) | Quick-hardening earyly-strenthening cement for oil well | |
| CN112707709A (en) | High-strength low-hydration-heat low-density cement slurry system for well cementation and preparation method thereof | |
| CN115716730B (en) | Elastic and tough micro-expansion cement paste and preparation method thereof | |
| CN115477518A (en) | A sprayable ultra-high toughness cement-based composite material and its preparation method and application | |
| CN114685125B (en) | Novel high-temperature-resistant cement slurry system for heavy oil thermal production well | |
| CN103571445B (en) | A kind of silicate plugging agent for oil well water plugging and using method thereof | |
| CN112194389B (en) | Strength attenuation resistant oil well cement and preparation method thereof | |
| CN106242443B (en) | A kind of modified cement-based sealing material of calcium sulfoaluminate minerals and its application process | |
| CN106186977B (en) | A kind of controlled release aquation aluminate cement base early strong durable sealing material and application process | |
| CN120058319A (en) | High-permeability-resistance high-disturbance-resistance cement-based repair material for tunnel engineering and preparation method thereof | |
| CN112142361B (en) | Application of polyacrylic resin in self-repairing agent for gas well cementing, self-repairing agent and preparation method thereof, cement composition and cement slurry | |
| CN117923838A (en) | A flexible solid waste-based grouting material and its preparation method and application | |
| CN116514420A (en) | A kind of low hydration thermal toughness cementing cement | |
| CN112939490B (en) | Oil-gas well cement and preparation method thereof | |
| CN106477924A (en) | A kind of high temperature resistant complex cement and preparation method thereof | |
| CN112125640B (en) | Early-strength seat slurry suitable for prefabricated part connection and preparation method thereof | |
| CN112979194A (en) | Chlorine-free high-temperature-resistant mineral type early strength agent for well cementation cement slurry and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Chengdu Jiahua special engineering material Co.,Ltd. Assignor: SICHUAN JIAHUA ENTERPRISE (Group) Co.,Ltd. Contract record no.: 2010510000111 Denomination of invention: Quick-hardening earyly-strenthening cement for oil well Granted publication date: 20070207 License type: Exclusive License Open date: 20031112 Record date: 20101108 |
|
| C56 | Change in the name or address of the patentee |
Owner name: JIAHUA SPECIAL CEMENT CO., LTD. Free format text: FORMER NAME: SICHUAN JIAHUA ENTERPRISE (GROUP) CORP., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 614003 Ma'anshan City, Sichuan Province, No. nine Feng Road, No. 2, Patentee after: JIAHUA SPECIAL CEMENT Co.,Ltd. Address before: 614003 Ma'anshan City, Sichuan Province, No. nine Feng Road, No. 2, Patentee before: SICHUAN JIAHUA ENTERPRISE (Group) Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070207 |