CN104119847A - Acid-soluble composite plugging agent and application thereof - Google Patents
Acid-soluble composite plugging agent and application thereof Download PDFInfo
- Publication number
- CN104119847A CN104119847A CN201410379550.9A CN201410379550A CN104119847A CN 104119847 A CN104119847 A CN 104119847A CN 201410379550 A CN201410379550 A CN 201410379550A CN 104119847 A CN104119847 A CN 104119847A
- Authority
- CN
- China
- Prior art keywords
- particle
- acid
- solubility
- acid compound
- stop agent
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/04—Hulls, shells or bark containing well drilling or treatment fluids
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/08—Fiber-containing well treatment fluids
Abstract
The invention discloses an acid-soluble composite plugging agent which mainly comprises shell particles, pre-crosslinked gel expanded particles, fiber materials and lime stone powder. The invention further provides application of the acid-soluble composite plugging agent in treatment of reservoir leakage in a drilling process. According to the invention, when being used for treating the reservoir leakage in the drilling process, the acid-soluble composite plugging agent disclosed by the invention is uniformly mixed with drilling fluid in a mass ratio of 1:(2-9) to prepare plugging slurry for plugging in the drilling process. The shell particles are high in acid solubility and greater in hardness, and can be applied as rigid bridge-binding particles in the plugging agent; expanding volume of polymer particles is continuously increased along with prolonging of water absorbing time; the fiber materials can be used for changing a fractured leaking channel into a pored leaking channel by virtue of bridge binding action. The secondary component is acid-soluble lime stone powder which can further fill up small gaps of a blocking all formed by the three materials, so that compactness and strength of the building wall are further increased to finally form the compact and high-strength blocking wall.
Description
Technical field
The invention belongs to petrochemical field, relate to the additive for drilling fluid in a kind of petroleum drilling engineering, particularly the preparation method of solubility in acid compound leakage stop agent for a kind of drilling fluid.
Background technology
In oil and gas well drilling, leakage is the down hole problem often running in drilling process.At present, the processing of leakage is taked to prevent, block up the mode of laying equal stress on conventionally, for the stratum of easy generation leakage, in drilling fluid, add with boring leakproofing material in advance, to prevent porosity seepage, avoid little leakage to become large and leak.For the large-scale leakage that stratum, especially the drilling fluid only import but no export of leakage occur, need to stop creeping into the special leak stopping of row.Conventional patching materials is various, as bridge joint plugging agent, cementing plugging agent, GEL USED FOR PLUGGING WELL LOST CIRCULATION, high dehydration plugging agent etc., in processing complicated leakage construction, respectively has its technical superiority.But above plugging agent has mainly been considered the treatment effect to leakage, all do not consider the protection to reservoir.Once there is leakage in reservoir drilling process, must first carry out leak stopping, also must take into account the injury problem of patching materials to reservoir simultaneously.
Summary of the invention
Object of the present invention is exactly the needs for Fractured and crumbliness reservoir drilling leakage blockage and acidifying operation, and a kind of solubility in acid compound leakage stop agent is provided, and this plugging agent plugging effect is good, and plugging strength is high, after completion, can go into operation by acidification to dispel block.
Solubility in acid compound leakage stop agent of the present invention, the main starting material by following parts by weight are mixed with and form:
A) shell particle 20-40 part;
B) pre-crosslinking polymer water-swelling particle 20-30 part;
C) filamentary material 30-40 part;
D) limestone powder 10-15 part.
According to one of embodiment of the present invention, described shell particle comprises shellfish shell, freshwater mussel crab shell, Concha rapanae thomasianae.
Preferably, described shell grain graininess be divided into thick type, in three kinds, thick type and thin type, wherein, in thick type particle, particle diameter is that 3.35mm-8.00mm particle is not less than 90%wt; In in thick type particle, particle diameter is that 1.18mm-3.35mm particle is not less than 85%wt; In thin type particle, particle diameter is that 0.425mm-1.18mm particle is not less than 80%wt.
Preferably, described shell particle is greater than 70%wt by the molten rate of 15%wt salt acid soak 24h acid at 25 ℃.
Another embodiment according to the present invention, described pre-crosslinking polymer water-swelling particle is pre-crosslinked gel volume expansion grain.
Described pre-crosslinked gel volume expansion grain can be bought and be obtained by market, also can be by polyacrylamide and wilkinite under linking agent effect, utilizing the functional groups such as silicon hydroxyl on bentonite clay particle surface and the amide group of polyacrylamide amine molecule to carry out condensation cross-linking reaction is prepared from, wherein polyacrylamide and bentonitic mass ratio 1:2-4, main purpose is to reduce material cost, utilizes the water-swelling property of bentonite clay particle itself simultaneously.
Preferably, described pre-crosslinked gel volume expansion grain is divided into thick type and two kinds, thin type, and wherein, in thick type particle, particle diameter is that 3mm-5mm particle is not less than 90%wt; In thin type particle, particle diameter is that 1mm-3mm particle is not less than 90%wt.
According to situ of drilling well requirement, in conjunction with the situation of drilling fluid or well finishing liquid leak-off velocity and formation leakage passage, determine shell particle and the pre-crosslinked gel volume expansion grain that uses different-grain diameter.Generally drilling fluid leakage speed is lower than 10m
3the porosity of/h or microfracture permeability loss, the thin type of shell particle, pre-crosslinked gel volume expansion grain is selected thin type; If leak speed at 10-30m
3glutenite leakage or the fractured leakage of/h scope, shell particle is thick type in selecting, and pre-crosslinked gel volume expansion grain is selected thin type; If leak speed, be greater than 30m
3the large-scale fractured leakage of/h scope, shell particle is selected thick type, and pre-crosslinked gel volume expansion grain is selected thick type.
Preferably, described pre-crosslinked gel volume expansion grain soaks 24h volumetric expansion multiple and is greater than 15 times at 25 ℃ in distilled water, at 25 ℃, by the molten rate of 15%wt salt acid soak 24h acid, is greater than 60%wt.
An embodiment again according to the present invention, described filamentary material is the fiber grain after newspaper is pulverized, its particle size range is 0.38-0.83mm.
For reducing costs, the preferred old and useless newspaper of described newspaper.
Newspaper, through the various processing of paper-making process, has certain water swellability, and its outward appearance of the fiber grain after pulverizing is rendered as fiber and platy shaped particle shape simultaneously, soft and have certain elasticity.Meanwhile, the free water in this fiber grain and drilling fluid has good affinity.In indoor leaking stoppage experiment and rig-site utilization, leakage medium and leakage stratum are had to good sealing effect, compare and there is very strong comparative benefits with other fiber.
An embodiment again according to the present invention, in described limestone powder, calcium carbonate content is more than 90%wt.
Preferably, the weight ratio that in described limestone powder, particle diameter is greater than 0.074mm is no more than 5%wt.
According to the present invention, described tensio-active agent, fluid loss agent, tackifier, wilkinite and the mineral fibre of can also comprising is as sepiolite, vermiculite, sheet mica etc., and its consumption can be conventional amount used.
The present invention also provides the application of above-mentioned solubility in acid compound leakage stop agent in processing drilling process reservoir leakage.
According to the present invention, described solubility in acid compound leakage stop agent is being processed drilling process reservoir leakage, and by being 1:2-9 with its mass ratio, drilling fluid mixed is even, is mixed with leak stopping slurry for drilling leakage blockage.
Drilling fluid of the present invention is selected commercially available drilling fluid, is the known technology of this area for other operations of drilling leakage blockage.
Solubility in acid compound leakage stop agent of the present invention is mixed with leak stopping slurry, under leak stopping differential pressure action, leakage channel is produced to high strength and stops up, and shell particle rigidity is wherein large, and intensity is high, forms bridging plug in leakage channel; Pre-crosslinked gel volume expansion grain is further inlayed bridging plug wall space, along with time lengthening, and volumetric expansion, further extruding leakage space; Filamentary material has certain flexibility, can fracture passage produces to cut apart to become fine porosity, and filamentary material itself also can be out of shape and produces soft shutoff; The further shutoff wall of fine grain limestone powder microporosity.The wall that said components forms in leakage channel is further compacted under leak stopping pressure reduction, and wall is finer and close, therefore can significantly improve the bearing capacity of low pressure and easy leaking lost territory layer.Said components major part belongs to acid soluble material, after reservoir plugging operations, can adopt acidizing treatment to go into operation, renwing stratum production capacity.Plugging agent of the present invention is by hard blocking and soft stifled combining; particle and filamentary material combine; water swellability and distortion shutoff combine; physical chemistry leak stopping combines with acidification to dispel block, for the leakage of Fractured and porous reservoir provides a kind of leak stopping and the effective means of protecting reservoir to combine.Its concrete action effect can be summarized as the following aspects:
(1) fracture leakage and glutenite leakage have fast blockage effect, are suitable for processing the leakage of larger type;
(2) for low pressure and easy leaking lost territory layer, there is higher leak stopping pressure-bearing effect;
(3) be suitable for processing reservoir leakage, be conducive to acidifying and go into operation, protection reservoir;
(4) wall under leak stopping differential pressure action, leakage channel being produced, extends in time, and bearing resistance increases, and wall compactness increases.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1
Get shell particle 40kg, pre-crosslinked gel volume expansion grain adjusting driving agnet RGT-14(is produced by Tianjin scale of professional fees charged by a painter,writer or calligrapher auxiliary agent Science and Technology Ltd., operative norm Q/12JH 5180-2013) 20kg, filamentary material (the fiber grain after old and useless newspaper is pulverized, its particle size range is 0.38-0.83mm) 30kg, limestone powder (calcium carbonate content is more than 90%wt) 10kg, after mechanically mixing, even with the drilling fluid mixed of 5 times of mixture quality, as required, add again proper amount of surfactant, fluid loss agent, tackifier, wilkinite and mineral fibre are as sepiolite, vermiculite, sheet micas etc. are mixed with leak stopping slurry for drilling leakage blockage.The basal component of this plugging agent mainly contains three kinds, and the first is shell particle, comprises the particle after the shell fragmentations such as various shellfishes, freshwater mussel crab, conch, and the molten rate of partic acid is high, and hardness is large, can be used as the rigidity bridge blinding particle in plugging agent; The second is water-swellable deformable polymer particle, and main component is pre-crosslinked gel volume expansion grain, and sour molten rate is high, and its expanding volume increases along with absorbent time extends constantly; The third is deformable filamentary material, fractured leakage passage can be become to porous leakage passage by bridge linking effect.Submember is acid soluble limestone powder, and further fill in the little space of wall that above-mentioned three kinds of materials can be formed, and the compactness of wall and intensity are further increased, and finally forms compact high-strength degree wall.
Embodiment 2
Get shell particle 30kg, pre-crosslinked gel volume expansion grain adjusting driving agnet is (by polyacrylamide and wilkinite under linking agent effect, utilizing the functional groups such as silicon hydroxyl on bentonite clay particle surface and the amide group of polyacrylamide amine molecule to carry out condensation cross-linking reaction is prepared from, wherein polyacrylamide and bentonitic mass ratio 1:3) 25kg, filamentary material (the fiber grain after old and useless newspaper is pulverized, its particle size range is 0.38-0.83mm) 35kg, limestone powder (calcium carbonate content is more than 90%wt) 10kg, after mechanically mixing, even with the drilling fluid mixed of 6 times of mixture quality, as required, add again proper amount of surfactant, fluid loss agent, tackifier, wilkinite and mineral fibre are as sepiolite, vermiculite, sheet micas etc. are mixed with leak stopping slurry for drilling leakage blockage.
Embodiment 3
Get shell particle 20kg, the polyacrylamide 30kg of precrosslink, filamentary material (the fiber grain after old and useless newspaper is pulverized, its particle size range is 0.42-0.83mm) 35kg, limestone powder (calcium carbonate content is more than 90%wt) 15kg, after mechanically mixing, even with the drilling fluid mixed of 8 times of mixture quality, as required, then add proper amount of surfactant, fluid loss agent, tackifier, wilkinite and mineral fibre to be mixed with leak stopping slurry for drilling leakage blockage as sepiolite, vermiculite, sheet mica etc.
Embodiment 4
Get shell particle 20kg, the propylene class monomer copolymer 30kg of precrosslink, filamentary material (the fiber grain after newspaper is pulverized, its particle size range is 0.38-0.56mm) 35kg, limestone powder (calcium carbonate content is more than 90%wt) 15kg, after mechanically mixing, even with the drilling fluid mixed of 3 times of mixture quality, as required, then add proper amount of surfactant, fluid loss agent, tackifier, wilkinite and mineral fibre to be mixed with leak stopping slurry for drilling leakage blockage as sepiolite, vermiculite, sheet mica etc.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. a solubility in acid compound leakage stop agent, is characterized in that, the main starting material by following parts by weight are mixed with and form:
A) shell particle 20-40 part;
B) pre-crosslinking polymer water-swelling particle 20-30 part;
C) filamentary material 30-40 part;
D) limestone powder 10-15 part.
2. solubility in acid compound leakage stop agent as claimed in claim 1, is characterized in that, described shell particle comprises shellfish shell, freshwater mussel crab shell, Concha rapanae thomasianae.
3. solubility in acid compound leakage stop agent as claimed in claim 2, is characterized in that, described shell grain graininess be divided into thick type, in three kinds, thick type and thin type, wherein, in thick type particle, particle diameter is that 3.35mm-8.00mm particle is not less than 90%wt; In in thick type particle, particle diameter is that 1.18mm-3.35mm particle is not less than 85%wt; In thin type particle, particle diameter is that 0.425mm-1.18mm particle is not less than 80%wt.
4. solubility in acid compound leakage stop agent as described in claim 2 or 3, is characterized in that, described shell particle is greater than 70%wt by the molten rate of 15%wt salt acid soak 24h acid at 25 ℃.
5. solubility in acid compound leakage stop agent as claimed in claim 1, is characterized in that, described pre-crosslinking polymer water-swelling particle is pre-crosslinked gel volume expansion grain.
6. solubility in acid compound leakage stop agent as claimed in claim 5, is characterized in that, described pre-crosslinked gel volume expansion grain is divided into two kinds, thick type and thin type, and wherein, in thick type particle, particle diameter is that 3mm-5mm particle is not less than 90%wt; In thin type particle, particle diameter is that 1mm-3mm particle is not less than 90%wt.
7. solubility in acid compound leakage stop agent as described in claim 5 or 6, is characterized in that, described pre-crosslinked gel volume expansion grain soaks 24h volumetric expansion multiple and is greater than 15 times at 25 ℃ in distilled water, at 25 ℃, by the molten rate of 15%wt salt acid soak 24h acid, is greater than 60%wt.
8. solubility in acid compound leakage stop agent as claimed in claim 1, is characterized in that, described filamentary material is the fiber grain after newspaper is pulverized, and its particle size range is 0.38-0.83mm.
9. solubility in acid compound leakage stop agent as claimed in claim 1, is characterized in that, in described limestone powder, calcium carbonate content is more than 90%wt; Preferably, the weight ratio that in described limestone powder, particle diameter is greater than 0.074mm is no more than 5%wt.
10. the application of solubility in acid compound leakage stop agent in processing drilling process reservoir leakage as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379550.9A CN104119847B (en) | 2014-08-05 | 2014-08-05 | A kind of acid-soluble compound leakage stop agent and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379550.9A CN104119847B (en) | 2014-08-05 | 2014-08-05 | A kind of acid-soluble compound leakage stop agent and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104119847A true CN104119847A (en) | 2014-10-29 |
| CN104119847B CN104119847B (en) | 2016-10-12 |
Family
ID=51765491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410379550.9A Active CN104119847B (en) | 2014-08-05 | 2014-08-05 | A kind of acid-soluble compound leakage stop agent and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104119847B (en) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388067A (en) * | 2014-10-31 | 2015-03-04 | 中国石油化工集团公司 | Compound leak preventive for oil-based drilling fluid |
| CN104726077A (en) * | 2015-04-08 | 2015-06-24 | 广汉市福客科技有限公司 | Pressure-bearing filling agent for drilling fluid |
| CN104818006A (en) * | 2015-04-23 | 2015-08-05 | 中国石油大学(华东) | Pressure-bearing plugging agent and application thereof |
| CN105016651A (en) * | 2015-07-14 | 2015-11-04 | 桂林市和鑫防水装饰材料有限公司 | Expansion-controllable plugging agent |
| CN105623632A (en) * | 2016-03-10 | 2016-06-01 | 中国石油天然气集团公司 | Acid soluble curing plugging agent |
| CN105925253A (en) * | 2016-05-10 | 2016-09-07 | 中国石油集团渤海钻探工程有限公司 | Low-density acid-soluble curing plugging agent |
| CN106281265A (en) * | 2016-07-20 | 2017-01-04 | 中石化石油工程技术服务有限公司 | A kind of extremely-low density sealing agent being applicable to low pressure and leakmess formation and preparation method |
| CN106609128A (en) * | 2015-10-26 | 2017-05-03 | 中国石油化工股份有限公司 | Water-based drilling fluid plugging agent |
| CN106609132A (en) * | 2015-10-26 | 2017-05-03 | 中国石油化工股份有限公司 | Multiple composite gel leak-stopping agent used for well drilling |
| CN106800920A (en) * | 2016-12-28 | 2017-06-06 | 中国石油天然气股份有限公司 | A kind of plugging agent and its preparation method and application |
| CN106928938A (en) * | 2017-02-14 | 2017-07-07 | 中国石油集团西部钻探工程有限公司 | With brill inert material sealing agent and preparation method thereof and application method |
| CN109233756A (en) * | 2018-10-26 | 2019-01-18 | 河南杰力沃实业有限公司 | A kind of drilling well high hard low bullet drill-feeding plugging agent of environment-friendly type and preparation method thereof |
| WO2019016304A1 (en) | 2017-07-20 | 2019-01-24 | Danmarks Tekniske Universitet | Quick-setting elastomer plugging composition |
| CN109423262A (en) * | 2017-08-29 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of acid-soluble sealing agent, acid-soluble liquid for plugging and preparation method thereof |
| CN110218548A (en) * | 2019-05-30 | 2019-09-10 | 北京工业大学 | A kind of material for quickly stopping leakage and preparation method thereof being automatically positioned at leakage |
| CN110529089A (en) * | 2019-09-20 | 2019-12-03 | 四川洁能锐思石油技术有限公司 | A kind of open-hole horizontal well refracturing method |
| CN111073616A (en) * | 2019-12-18 | 2020-04-28 | 中国海洋石油集团有限公司 | Temporary plugging agent and application thereof |
| CN111574976A (en) * | 2020-06-28 | 2020-08-25 | 四川格瑞迪斯石油技术有限公司 | Enhanced leaking stoppage gel and preparation method thereof |
| CN112210354A (en) * | 2019-07-12 | 2021-01-12 | 中石化石油工程技术服务有限公司 | Plugging agent for oil-based drilling fluid |
| CN112239661A (en) * | 2019-07-18 | 2021-01-19 | 中石化石油工程技术服务有限公司 | Plugging agent and plugging slurry for reservoir leakage |
| CN113105876A (en) * | 2020-01-13 | 2021-07-13 | 中国石油化工股份有限公司 | Drilling well plugging agent, preparation method and application thereof |
| CN114426811A (en) * | 2020-09-18 | 2022-05-03 | 中国石油化工股份有限公司 | High-filtration-loss plugging agent for drilling fluid |
| CN114525118A (en) * | 2022-03-04 | 2022-05-24 | 中国石油大学(北京) | Drilling well plugging agent composition, drilling well plugging agent and preparation method and application thereof |
| CN116042190A (en) * | 2022-11-09 | 2023-05-02 | 四川康荣石油化工科技有限公司 | High-efficiency plugging agent for drilling fluid and application thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171969C (en) * | 2002-01-14 | 2004-10-20 | 中国石油化工股份有限公司 | Temporary leakage-stopping agent for well drilling shielding and its application |
| CN101089116A (en) * | 2007-07-11 | 2007-12-19 | 中国石油大学(华东) | Adaptive leak preventing and stopping agent for drilling fluid |
| CN103146362B (en) * | 2013-04-09 | 2015-06-24 | 石家庄华莱鼎盛科技有限公司 | Broad spectrum type high-efficient blocking agent for drilling fluid |
-
2014
- 2014-08-05 CN CN201410379550.9A patent/CN104119847B/en active Active
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104388067A (en) * | 2014-10-31 | 2015-03-04 | 中国石油化工集团公司 | Compound leak preventive for oil-based drilling fluid |
| CN104388067B (en) * | 2014-10-31 | 2020-01-14 | 中国石油化工集团公司 | Composite leak-proof agent for oil-based drilling fluid |
| CN104726077B (en) * | 2015-04-08 | 2017-07-07 | 广汉市福客科技有限公司 | A kind of drilling fluid pressure-bearing crams agent |
| CN104726077A (en) * | 2015-04-08 | 2015-06-24 | 广汉市福客科技有限公司 | Pressure-bearing filling agent for drilling fluid |
| CN104818006A (en) * | 2015-04-23 | 2015-08-05 | 中国石油大学(华东) | Pressure-bearing plugging agent and application thereof |
| CN105016651A (en) * | 2015-07-14 | 2015-11-04 | 桂林市和鑫防水装饰材料有限公司 | Expansion-controllable plugging agent |
| CN106609128A (en) * | 2015-10-26 | 2017-05-03 | 中国石油化工股份有限公司 | Water-based drilling fluid plugging agent |
| CN106609132A (en) * | 2015-10-26 | 2017-05-03 | 中国石油化工股份有限公司 | Multiple composite gel leak-stopping agent used for well drilling |
| CN105623632A (en) * | 2016-03-10 | 2016-06-01 | 中国石油天然气集团公司 | Acid soluble curing plugging agent |
| CN105925253A (en) * | 2016-05-10 | 2016-09-07 | 中国石油集团渤海钻探工程有限公司 | Low-density acid-soluble curing plugging agent |
| CN105925253B (en) * | 2016-05-10 | 2018-11-20 | 中国石油集团渤海钻探工程有限公司 | The molten solidification sealing agent of low-density theobromine |
| CN106281265A (en) * | 2016-07-20 | 2017-01-04 | 中石化石油工程技术服务有限公司 | A kind of extremely-low density sealing agent being applicable to low pressure and leakmess formation and preparation method |
| CN106800920A (en) * | 2016-12-28 | 2017-06-06 | 中国石油天然气股份有限公司 | A kind of plugging agent and its preparation method and application |
| CN106800920B (en) * | 2016-12-28 | 2019-06-11 | 中国石油天然气股份有限公司 | A kind of plugging agent and its preparation method and application |
| CN106928938A (en) * | 2017-02-14 | 2017-07-07 | 中国石油集团西部钻探工程有限公司 | With brill inert material sealing agent and preparation method thereof and application method |
| WO2019016304A1 (en) | 2017-07-20 | 2019-01-24 | Danmarks Tekniske Universitet | Quick-setting elastomer plugging composition |
| CN109423262A (en) * | 2017-08-29 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of acid-soluble sealing agent, acid-soluble liquid for plugging and preparation method thereof |
| CN109233756A (en) * | 2018-10-26 | 2019-01-18 | 河南杰力沃实业有限公司 | A kind of drilling well high hard low bullet drill-feeding plugging agent of environment-friendly type and preparation method thereof |
| CN110218548A (en) * | 2019-05-30 | 2019-09-10 | 北京工业大学 | A kind of material for quickly stopping leakage and preparation method thereof being automatically positioned at leakage |
| CN112210354A (en) * | 2019-07-12 | 2021-01-12 | 中石化石油工程技术服务有限公司 | Plugging agent for oil-based drilling fluid |
| CN112239661A (en) * | 2019-07-18 | 2021-01-19 | 中石化石油工程技术服务有限公司 | Plugging agent and plugging slurry for reservoir leakage |
| CN110529089A (en) * | 2019-09-20 | 2019-12-03 | 四川洁能锐思石油技术有限公司 | A kind of open-hole horizontal well refracturing method |
| CN111073616A (en) * | 2019-12-18 | 2020-04-28 | 中国海洋石油集团有限公司 | Temporary plugging agent and application thereof |
| CN113105876A (en) * | 2020-01-13 | 2021-07-13 | 中国石油化工股份有限公司 | Drilling well plugging agent, preparation method and application thereof |
| CN111574976A (en) * | 2020-06-28 | 2020-08-25 | 四川格瑞迪斯石油技术有限公司 | Enhanced leaking stoppage gel and preparation method thereof |
| CN114426811A (en) * | 2020-09-18 | 2022-05-03 | 中国石油化工股份有限公司 | High-filtration-loss plugging agent for drilling fluid |
| CN114426811B (en) * | 2020-09-18 | 2023-08-29 | 中国石油化工股份有限公司 | High-fluid loss plugging agent for drilling fluid |
| CN114525118A (en) * | 2022-03-04 | 2022-05-24 | 中国石油大学(北京) | Drilling well plugging agent composition, drilling well plugging agent and preparation method and application thereof |
| CN116042190A (en) * | 2022-11-09 | 2023-05-02 | 四川康荣石油化工科技有限公司 | High-efficiency plugging agent for drilling fluid and application thereof |
| CN116042190B (en) * | 2022-11-09 | 2024-04-05 | 四川康荣石油化工科技有限公司 | High-efficiency plugging agent for drilling fluid and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104119847B (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104119847A (en) | Acid-soluble composite plugging agent and application thereof | |
| CN105368409B (en) | A kind of oil base drilling fluid compound sealing agent and preparation method thereof | |
| CN104818006A (en) | Pressure-bearing plugging agent and application thereof | |
| CN110358513B (en) | Bridging leak stoppage slurry and preparation method thereof | |
| CN105018054A (en) | Oil and gas well sealing plugging agent | |
| CN103740340B (en) | Expansion consolidation type plugging agent | |
| CN105733532B (en) | Thick pons hematoma agent and leakage-stop liquid and preparation method thereof in the molten type mineral fibres of acid | |
| CN105524600A (en) | Plugging while drilling agent for oil-based drilling fluid and preparation method of plugging while drilling agent | |
| CN104559979A (en) | Efficient-dehydration lost circulation additive | |
| CN102477287B (en) | Drilling fluid and composite additive | |
| CN105505352B (en) | Plugging agent for high-sulfur-content gas well | |
| CN101353571A (en) | Oil and water well slag plugging agent | |
| CN108977183A (en) | Adaptive sealing agent and preparation method | |
| CN103102128A (en) | Injecting paste material for underground structure water plugging and preparation method thereof | |
| CN107057662A (en) | A kind of water-base drilling fluid sealing agent and its preparation method and application | |
| CN107603574A (en) | A kind of drilling water base sealing agent and its application method | |
| NO20171551A1 (en) | Cement slurry compositions, methods of making, and methods of use | |
| CN105505400A (en) | Soil stabilizer and preparation method thereof | |
| CN103923628A (en) | Low-viscidity flexible cement paste for well cementation with slim hole and single channel | |
| KR101607062B1 (en) | Grout for filling pore space in ground and Method for grouting using the same | |
| CN103756656B (en) | For blocking the quiet gelling leakage-stop liquid of severe mud losses | |
| Malusis et al. | Hydraulic conductivity of sand-bentonite backfills containing HYPER clay | |
| CN111040747A (en) | Long horizontal section horizontal well cementing curable pad fluid and application thereof | |
| CN113583638B (en) | Calcium-based brine polymer strong-inhibition environment-friendly drilling fluid base fluid, drilling fluid, and preparation and application thereof | |
| CN106747130B (en) | A kind of high temperature resistant oil well sealing agent |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170710 Address after: The Tower Road south of Mongolia Autonomous Prefecture of Korla city the Xinjiang Uygur Autonomous Region Bayinguoleng 841000 Lane 1, No. 7 shuixuan Mingyuan 2 Patentee after: Xinjiang Hua Oil Energy Engineering Service Co., Ltd. Address before: 266580 Qingdao economic and Technological Development Zone, Changjiang Road, No. 66, Shandong Co-patentee before: SHANDONG HANHAI TECHNOLOGY CO., LTD. Patentee before: China Petroleum University (East China) |