CN101337796A - Liquid cement mortar capable of being stored - Google Patents
Liquid cement mortar capable of being stored Download PDFInfo
- Publication number
- CN101337796A CN101337796A CNA2008101167020A CN200810116702A CN101337796A CN 101337796 A CN101337796 A CN 101337796A CN A2008101167020 A CNA2008101167020 A CN A2008101167020A CN 200810116702 A CN200810116702 A CN 200810116702A CN 101337796 A CN101337796 A CN 101337796A
- Authority
- CN
- China
- Prior art keywords
- parts
- grout
- cement paste
- fluidization
- storable
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00086—Mixtures with prolonged pot-life
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses liquified cement paste which can be stored. The liquified cement paste comprises 100 parts of cement, 0 to 70 parts of a light-weight additive, 0 to 50 parts of a weighting agent, 0 to 70 parts of an intensifier, 30 to 150 parts of water, 0.5 to 5 parts of a suspension stabilizer, 2 to 10 parts of a hydrate inhibitor and 0.3 to 2 parts of a dispersant. The storage period of the liquified cement paste which can be stored is 3 months; the density of the cement paste can be controlled between 1.30g/cm<3> to 2.10g/cm<3>; the cement paste is applicable for various well temperatures. By using a stimulator and an average retarder, the thickening time can be controlled between 1 and 72 hours; the early compressive strength of the cement paste is high with the 24 hour-strength of more than 14MPa; the cement paste is stable and reliable; the properties of the cement paste are basically kept unchanged before and after the cement paste is stored; other properties of the cement paste such as the fluid loss property, the rheological property and so on can be adjusted to meet the requirement of application by using well cementation additives.
Description
Technical field
The present invention relates to a kind of oil recovery, workover platform and edge zone, land etc. and can't use employed storable fluidization grout in the well cementing operation of conventional cementing equipment in the ocean.
Background technology
Cementing operation at present all will be used expensive, complicated main equipment such as cementing truck, air compressor machine, pressurized vessel usually, and for offshore oilfield, laying these these equipment on platform just becomes very difficult problem.In the well site, cement transmit by air compression plant and by proper proportion with puddle water and other admixtures are puddled into pumpable grout, squeeze into the down-hole with pumping equipment.Owing to need complicated, large-scale air-pressure equipment, puddle equipment and pumping equipment, also be subjected to the influence of factors such as defeated ash interrupts, material storehouse fluctuation simultaneously, the cement slurry density fluctuation is big, has influenced cementing quality greatly.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of storable fluidization grout, and pressure equipment need not arranged and be easy to transportation, and the cement slurry density stable homogeneous, be easy to control.
In order to address the above problem, to the invention provides a kind of storable fluidization grout and comprise: 100 parts of cement, 0～70 part of light-weight additive, 0～50 part of weighting agent, 0～70 part of toughener, 30～150 parts of water, 0.5～5 portion of suspension stabilizer, 2～10 parts of hydrate inhibitors and 0.3～2 part of dispersion agent.
Preferably, described suspension stabilizer comprises: 1 weight part ultrafine slag powder, 0.2～0.5 weight part are removed soil, 0.05～0.2 weight part carboxymethyl cellulose and 0.01～0.1 weight part xanthan gum.
Preferably, described hydrate inhibitor comprises: 1 part of gluconate A, 0.2～0.8 part of gluconate B, 0.05～0.15 sulfonated lignin, 0.1～1 part of phosphonate and/or carboxylate salt, 0.01～0.2 portion of Zulkovsky starch.
Preferably, described light-weight additive is: 1 part is floated pearl, 0.1～1 part of pearlstone, 0.1～0.5 part and removes soil.
Preferably, described toughener is: 1 part of superfine cement, 1 part of little silicon, 0.1～0.5 part of Tai-Ace S 150,0.1～0.3 part of sulfonated ketone aldehyde condensate.
Preferably, described weighting agent is: 1 part of ground hematite, 0.7～1 part powdered iron ore and 1～1.5 part of barite part.
Preferably, described dispersion agent is: 1 part of sulfonated ketone aldehyde condensate, 0.1～0.6 part of sulfonated melamine enriched material, 0.3～0.6 part of naphthalenesulfonate polymkeric substance, 0.05～0.7 part of styrene-maleic anhydride polymkeric substance and 0.2～0.7 part of sulfamate polymkeric substance.
But the shelf lives of the present invention's storing liquid grout can reach 3 months, and cement slurry density can be controlled in 1.30～2.10g/cm
3, can be applicable to various well temperature.By activator and common retardant be controlled at 1～72 hour the thickening time; Grout early anti pressured intension height, intensity reached more than the 14MPa in 24 hours; The grout slurry is reliable and stable, and grout performance before and after storing remains unchanged substantially, and other performance of grout such as filtrate-loss control energy, rheological property etc. all can be adjusted to the requirement of application by normally used well cementation admixture.In addition, the present invention also has following advantage:
1) but the production of storing liquid grout and store and pressure equipment need not arranged and be easy to transportation;
2) but storing liquid cement slurry density stable homogeneous, be easy to control;
3) adopt grout of the present invention can shorten the well cementation cycle, improve well cementation efficient, reduce the well cementation expense;
4) adopt grout of the present invention also to have the noise of reduction, reduce dust, help effect such as environmental protection.
Embodiment
Embodiment 1
At first take by weighing each component: 100 parts of cement, 20 parts of light-weight additives, 20 parts of tougheners, 60 parts of water, 2 portions of suspension stabilizers, 3 parts of hydrate inhibitors and 1 part of dispersion agent according to following proportioning; Wherein, suspension stabilizer comprises: 1 part of ultrafine slag powder, 0.2 part are removed soil, 0.05 part of carboxymethyl cellulose and 0.1 weight part xanthan gum; Hydrate inhibitor comprises: 1 part of gluconate A, 0.2 part of gluconate B, 0.05 sulfonated lignin, 1 part of phosphonate, 0.2 portion of Zulkovsky starch; Light-weight additive comprises: 1 part is floated pearl, 0.1 part of pearlstone, 0.5 part and removes soil; Toughener comprises: 1 part of superfine cement, 1 part of little silicon, 0.1 part of Tai-Ace S 150,0.3 part of sulfonated ketone aldehyde condensate; Dispersion agent comprises: 1 part of sulfonated ketone aldehyde condensate, 0.1 part of sulfonated melamine enriched material, 0.3 part of naphthalenesulfonate polymkeric substance, 0.05 part of styrene-maleic anhydride polymkeric substance and 0.7 part of sulfamate polymkeric substance.
Secondly, the cement that is taken by weighing, light-weight additive, toughener, suspension stabilizer are done and are mixed to even, again water, hydrate inhibitor and dispersion agent are joined in the corrugation agitator and stir, start agitator, rotating speed is adjusted to 4000rpm, under this rotating speed, will puddle uniform compound and join in the corrugation agitator, after all material adds, agitator speed is brought up to 12000rpm stirred 2 minutes.
Once more, but the storage of water mud that stirs is poured in the airtight container, stored at ambient temperature, and per 7 days stir once.
Stored cement slurry density with the said ratio preparation is 1.57g/cm
3, the shelf lives reaches 25～100 days.
Embodiment 2
At first take by weighing each component: 100 parts of cement, 35 parts of weighting agents, 44 parts of water, 0.5 portion of suspension stabilizer, 2 parts of hydrate inhibitors and 0.3 part of dispersion agent according to following proportioning; Wherein, suspension stabilizer comprises: 1 part of ultrafine slag powder, 0.5 part are removed soil, 0.2 part of carboxymethyl cellulose and 0.01 part of xanthan gum; Hydrate inhibitor comprises: 1 part of gluconate A, 0.8 part of gluconate B, 0.15 sulfonated lignin, 0.1 part of phosphonate, 0.01 portion of Zulkovsky starch; Toughener comprises: 1 part of superfine cement, 1 part of little silicon, 0.5 part of Tai-Ace S 150,0.1 part of sulfonated ketone aldehyde condensate; Dispersion agent comprises: 1 part of sulfonated ketone aldehyde condensate, 0.6 part of sulfonated melamine enriched material, 0.6 part of naphthalenesulfonate polymkeric substance, 0.7 part of styrene-maleic anhydride polymkeric substance and 0.2 part of sulfamate polymkeric substance; Weighting agent is included as: 1 part of ground hematite, 0.7 part powdered iron ore and 1 part of barite part.
All the other preparation technologies and storage are with embodiment 1.
Stored cement slurry density with the said ratio preparation is 2.16g/cm
3, the shelf lives reaches 25～100 days.
Embodiment 3
At first take by weighing each component: 100 parts of cement, 36 parts of water, 5 portions of suspension stabilizers, 10 parts of hydrate inhibitors and 2 parts of dispersion agents according to following proportioning; Wherein, suspension stabilizer comprises: 1 part of ultrafine slag powder, 0.3 part are removed soil, 0.1 part of carboxymethyl cellulose and 0.05 part of xanthan gum; Hydrate inhibitor comprises: 1 part of gluconate A, 0.6 part of gluconate B, 0.1 part of sulfonated lignin, 0.5 carboxylate salt, 0.1 portion of Zulkovsky starch; Dispersion agent comprises: 1 part of sulfonated ketone aldehyde condensate, 0.1 part of sulfonated melamine enriched material, 0.4 part of naphthalenesulfonate polymkeric substance, 0.3 part of styrene-maleic anhydride polymkeric substance and 0.5 part of sulfamate polymkeric substance.
All the other preparation technologies and storage are with embodiment 1.
Stored cement slurry density with the said ratio preparation is 1.97g/cm
3, the shelf lives reaches 25～100 days.
Embodiment 4
At first take by weighing each component: 100 parts of cement, 70 parts of light-weight additives, 70 parts of tougheners, 150 parts of water, 0.5～3 portion of suspension stabilizer, 2～8 parts of hydrate inhibitors and 0.3～2 part of dispersion agent according to following proportioning; Wherein, suspension stabilizer comprises: 1 weight part ultrafine slag powder, 0.2～0.5 weight part are removed soil, 0.05～0.2 weight part carboxymethyl cellulose and 0.01～0.1 weight part xanthan gum.Hydrate inhibitor comprises: 1 part of gluconate A, 0.2～0.8 part of gluconate B, 0.05～0.15 sulfonated lignin, 0.1～1 part of phosphonate and/or carboxylate salt, 0.01～0.2 portion of Zulkovsky starch.
Stored cement slurry density with the said ratio preparation is 1.30g/cm
3, the shelf lives reaches 25～100 days.
All the other preparation technologies and storage are with embodiment 1.
Embodiment 5
At first take by weighing each component: 100 parts of cement, 50 parts of weighting agents, 53 parts of water, 0.5～5 portion of suspension stabilizer, 2～10 parts of hydrate inhibitors and 0.3～2 part of dispersion agent according to following proportioning; Wherein, suspension stabilizer comprises: 1 weight part ultrafine slag powder, 0.2～0.5 weight part are removed soil, 0.05～0.2 weight part carboxymethyl cellulose and 0.01～0.1 weight part xanthan gum.Hydrate inhibitor comprises: 1 part of gluconate A, 0.2～0.8 part of gluconate B, 0.05～0.15 sulfonated lignin, 0.1～1 part of phosphonate and/or carboxylate salt, 0.01～0.2 portion of Zulkovsky starch.
Stored cement slurry density with the said ratio preparation is 2.23g/cm
3, the shelf lives reaches 25～100 days.
All the other preparation technologies and storage are with embodiment 1.
Table 1 different densities can store the grout proportioning
Grout by above-mentioned prepared only needs to add activator and other required conventional admixture of cement slurry property in use, as retardant and fluid loss agent etc., injects the down-hole immediately after adjusting performance such as thickening time.
But above-mentioned storing liquid cement is applicable to the well cementation and the workover treatment of various hole conditions, be specially adapted to the less well cementation of cement slurry volume, workover treatment (as the small hole well cementation) and the well cementation that can't go up conventional cementing equipment, workover treatment, as offshore platform, remote districts and beach sea well cementing operation etc., the well cementation in these areas and mixing equipment do not have placement space or are difficult to arrive at platform, utilize transportation means (tugboat and/or tank car etc.) commonly used that the grout of fluidization is transported to the scene, add after certain additive adjusts the thickening time, utilize the facility of platform or tugboat to pump in the well, thereby realize well cementing operation.But table two is the contrast of the present invention's storage of liquids grout and traditional cementing slurry.
But the contrast of table 2 the present invention storage of liquids grout and traditional cementing slurry
| Project | The tradition cementing slurry | But storing liquid grout |
| Requirement to equipment | The Mud mixer that band circulation is puddled, 2 cement pump trucks, displacement slot, cement storage tank, air compressor machine, dashpot, particle collector, batch-handling mixer, power pack | The LCP groove of the warehousing and transportation facilities of LCP/ admixture, 2 triplex pumps, displacement slot, 2 25bbl |
| Operations area m 2 | 74 | 35 |
| Area occupied m 2 | 43 | 21 |
| Weight kg | 26000 | 16000 |
| Total expense | 100％ | 38.60％ |
As seen from the above table, but the present invention's storing liquid grout compare aspect a lot of with traditional well cementing operation with well cementation significant raising all arranged.But storing liquid cement has solved the problem of mixing ash at the scene, has realized puddling in advance, has avoided interrupting, expect because of defeated ash the speed of puddling that factor such as storehouse fluctuation causes and the fluctuation of rate of pumping, has improved well cementation efficient.Owing to realized puddling in advance, but the dosage of each composition material in the storing liquid cement is accurate, to puddle evenly fully, cement slurry density can reach accurate control.But adopt the storing liquid well cementing of cement, do not need complexity, expensive air-pressure equipment, puddle equipment etc. and just can finish well cementing operation, and can reduce operator, reduce schedule of operation, reduction operations area.
Claims (7)
1, a kind of storable fluidization grout, it is characterized in that, comprising: 100 parts of cement, 0～70 part of light-weight additive, 0～50 part of weighting agent, 0～70 part of toughener, 30～150 parts of water, 0.5～5 portion of suspension stabilizer, 2～10 parts of hydrate inhibitors and 0.3～2 part of dispersion agent.
2, storable fluidization grout as claimed in claim 1, it is characterized in that described suspension stabilizer comprises: 1 weight part ultrafine slag powder, 0.2～0.5 weight part are removed soil, 0.05～0.2 weight part carboxymethyl cellulose and 0.01～0.1 weight part xanthan gum.
3, storable fluidization grout as claimed in claim 1, it is characterized in that described hydrate inhibitor comprises: 1 part of gluconate A, 0.2～0.8 part of gluconate B, 0.05～0.15 sulfonated lignin, 0.1～1 part of phosphonate and/or carboxylate salt, 0.01～0.2 portion of Zulkovsky starch.
4, storable fluidization grout as claimed in claim 1 is characterized in that described light-weight additive is: 1 part is floated pearl, 0.1～1 part of pearlstone, 0.1～0.5 part and removes soil.
5, storable fluidization grout as claimed in claim 1 is characterized in that described toughener is: 1 part of superfine cement, 1 part of little silicon, 0.1～0.5 part of Tai-Ace S 150,0.1～0.3 part of sulfonated ketone aldehyde condensate.
6, storable fluidization grout as claimed in claim 1 is characterized in that described weighting agent is: 1 part of ground hematite, 0.7～1 part powdered iron ore and 1～1.5 part of barite part.
7, storable fluidization grout as claimed in claim 1, it is characterized in that described dispersion agent is: 1 part of sulfonated ketone aldehyde condensate, 0.1～0.6 part of sulfonated melamine enriched material, 0.3～0.6 part of naphthalenesulfonate polymkeric substance, 0.05～0.7 part of styrene-maleic anhydride polymkeric substance and 0.2～0.7 part of sulfamate polymkeric substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101167020A CN101337796B (en) | 2008-07-15 | 2008-07-15 | Liquid cement mortar capable of being stored |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101167020A CN101337796B (en) | 2008-07-15 | 2008-07-15 | Liquid cement mortar capable of being stored |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101337796A true CN101337796A (en) | 2009-01-07 |
| CN101337796B CN101337796B (en) | 2012-08-15 |
Family
ID=40211990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101167020A Active CN101337796B (en) | 2008-07-15 | 2008-07-15 | Liquid cement mortar capable of being stored |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101337796B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747880A (en) * | 2009-12-29 | 2010-06-23 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN102382633A (en) * | 2010-08-31 | 2012-03-21 | 中国海洋石油总公司 | Silicate grout for deep water |
| CN104818003A (en) * | 2015-04-03 | 2015-08-05 | 湖北汉科新技术股份有限公司 | High-temperature and low-pressure oil-gas well protection reservoir workover fluid |
| CN105940180A (en) * | 2014-03-31 | 2016-09-14 | 哈利伯顿能源服务公司 | Transportation and delivery of set-delayed cement compositions |
| CN110255960A (en) * | 2019-04-11 | 2019-09-20 | 武汉理工大学 | A kind of antisettling agent and its preparation method and application |
| CN113105150A (en) * | 2021-02-23 | 2021-07-13 | 广东至道先进土木工程材料技术研究有限公司 | Suspension stabilizer, preparation method, use method and use device thereof |
-
2008
- 2008-07-15 CN CN2008101167020A patent/CN101337796B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747880A (en) * | 2009-12-29 | 2010-06-23 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN101747880B (en) * | 2009-12-29 | 2013-12-04 | 中国石油天然气集团公司 | Deep-water low-temperature low-density early-strength cementing slurry for well cementation |
| CN102382633A (en) * | 2010-08-31 | 2012-03-21 | 中国海洋石油总公司 | Silicate grout for deep water |
| CN102382633B (en) * | 2010-08-31 | 2014-03-05 | 中国海洋石油总公司 | Silicate grout for deep water |
| CN105940180A (en) * | 2014-03-31 | 2016-09-14 | 哈利伯顿能源服务公司 | Transportation and delivery of set-delayed cement compositions |
| CN104818003A (en) * | 2015-04-03 | 2015-08-05 | 湖北汉科新技术股份有限公司 | High-temperature and low-pressure oil-gas well protection reservoir workover fluid |
| CN110255960A (en) * | 2019-04-11 | 2019-09-20 | 武汉理工大学 | A kind of antisettling agent and its preparation method and application |
| CN110255960B (en) * | 2019-04-11 | 2021-09-14 | 武汉理工大学 | Anti-settling agent and preparation method and application thereof |
| CN113105150A (en) * | 2021-02-23 | 2021-07-13 | 广东至道先进土木工程材料技术研究有限公司 | Suspension stabilizer, preparation method, use method and use device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101337796B (en) | 2012-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101337796B (en) | Liquid cement mortar capable of being stored | |
| CN102757206B (en) | Mine fracture grouting material and usage method thereof | |
| EP1781754B1 (en) | Fluid loss concentrate for hydraulic cement | |
| CA1223014A (en) | Matrix control cementing slurry | |
| RU2014140788A (en) | SLOWLY FILLING CEMENT COMPOSITIONS CONTAINING PUMPUS AND RELATED WAYS | |
| CN101693615A (en) | Sulphoaluminate cement base synchronous slip casting material and preparation method | |
| JPH11507002A (en) | Stable suspension system of hydrocolloid and superplasticizer | |
| CN100545123C (en) | Low-temperature low-density well cementing cement mortar | |
| CN104262544A (en) | Environment-friendly high-strength acrylate grouting material and using method thereof | |
| CN105174886A (en) | Limestone water-containing layer grouting reconstruction material suitable for superlong-distance pumping | |
| CN103362532B (en) | Preparation method of colloid foam containing activated carbon for preventing and treating gas emission in goaf | |
| CN101935198B (en) | Environment-friendly shield construction single-liquid synchronous grouting slurry | |
| MX2013012179A (en) | Use of methylhydroxyethyl cellulose as cement additive. | |
| CN112761608B (en) | Method for improving shale oil recovery ratio and reducing fracturing fluid flowback in pressure flooding integrated mode | |
| CN102992686A (en) | Cement grinding aid | |
| CN102585788A (en) | Supersaturated sodium chloride cement slurry system for well cementation | |
| CN114479820B (en) | Self-heating composite foam fracturing fluid capable of being controlled in real time and field construction method | |
| CN107502313A (en) | Spacetabs type fluid loss agent and preparation method and application are used in a kind of seawater well cementation | |
| CN110498633A (en) | Shield synchronization slip casting Material cladding additive | |
| CN109592949A (en) | Meet the concrete and its pumping method of super high pump-conveying | |
| CN101948679B (en) | A kind of Intelligent reservoir drilling completion fluid system and preparation method thereof | |
| CN106278022A (en) | A kind of formula of foundation treatment engineering mixed serum and preparation method thereof | |
| CN107699217A (en) | A kind of high swollen discharge drilling sealing material of lightweight based on drilling debris and preparation method | |
| CN107459324A (en) | A kind of shield anti-stratum settlement housing packing material and preparation method thereof | |
| CN107512862A (en) | A kind of special tackifier of shield synchronization slip casting material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder |