CN103509534B - Leak-stopping agent for petroleum drilling - Google Patents
Leak-stopping agent for petroleum drilling Download PDFInfo
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- CN103509534B CN103509534B CN201210225751.4A CN201210225751A CN103509534B CN 103509534 B CN103509534 B CN 103509534B CN 201210225751 A CN201210225751 A CN 201210225751A CN 103509534 B CN103509534 B CN 103509534B
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- 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
- C09K8/032—Inorganic additives
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- 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
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- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
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- 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
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- 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
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- 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
- C09K2208/18—Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a kind of leak-stopping agent for petroleum drilling, composed of the following components: component A: calcium carbonate and/or barium carbonate, 60 ~ 80 weight parts; B component: lime powder and/or G class g cement, 15 ~ 25 weight parts; Component C: filamentary material, 5 ~ 15 weight parts.Preferably, component A to be particle diameter the be particle of 150 ~ 250 μm; B component is the powder that particle diameter is greater than 0 ~ 150 μm; The length of component C is 1 ~ 2mm.Present invention also offers the methods for making and using same of this plugging agent.According to plugging agent of the present invention, its composition and preparation method are simple, acid-solublely such as can reach more than 97.5%, are convenient to acidification to dispel block; Separately for lost circulation additive, also can coordinate with other bridge material, in big-and-middle-sized leakage plugging operations.
Description
Technical field
The present invention relates to petroleum drilling leak stopping field, relate in particular to a kind of leak-stopping agent for petroleum drilling and preparation method thereof.
Background technology
Leakage is one of common down-hole difficult problem of petroleum drilling, and leakage not only can expend rig time, loss drilling fluid, and likely causes the series of problems such as bit freezing, blowout, borehole well instability.For reservoir leakage, the subparticle in drilling fluid can be piled up at the venturi place that the gas channel of reservoir is narrower, thus blocks or make flow passage to diminish part flow passage, therefore reduces oil gas flow.Can not be discharged under the anti-differential pressure action that these solid phase tampers usually produce in formation testing or oil recovery, thus cause permanent plugging, have a strong impact on oil and gas production.
In order to protect reservoir, require that drilling fluid density is as far as possible low, the pressure produced in shaft bottom will be near or below formation pore pressure, prevents drilling fluid filtrate and solid phase particle from entering reservoir.If reservoir pore pressure is unknown, or a reservoir not only layer position, each layer interdigit pore pressure is inconsistent, and at this moment drilling fluid density just likely exceedes the pore pressure on stratum and causes leakage.If reservoir permeability is fine, easily cause permeability loss, the filtrate in typical well liquid and solid phase particle are easy to enter reservoir, pollute reservoir.Run into this situation, just need to add drill-feeding plugging agent in drilling fluid, form fine and close plugged zone at reservoir near the well section of the borehole wall, the generation of prevention leakage, protect reservoir from the injury of filtrate and solid phase particle as far as possible.
Patent CN1096537C discloses a kind of plugging agent, and its formula is: acid-soluble chemical substance material: wilkinite: lime powder: Paris white: cement: filamentary material=(15-45): (5-25): (5-30): (5-25): (0-40): (0-20).This plugging agent uses more for convenience, but constituent species is more, and acid-soluble the unknown of this plugging agent.
Patent CN1171969C discloses a kind of temporary plugging agent be made up of swellable material, bridging materials, packing material and inhibition material etc., wherein the size of swellable material is 5-381 μm, bridging materials to be size the be sheet mica of 11-541 μm, packing material can be ordinary calcium carbonate etc., and size is 5-140 μm.This temporary plugging agent employs the strong basicity organic salt such as polyacrylonitrile sodium salt as inhibition material, and its hydrolysis or degraded product can produce toxicity.The use of such material also easily causes the pollution of Oil/gas Well, also add the complicacy that temporary plugging agent is formed simultaneously.
In addition, conventional lost circulation additive material has 801 drill-feeding plugging agents, DF-1 uniaxial pressure encapsulant, and FDJ-1 plugging agent, KSY are without permeable membrane pressure-bearing treatment agent, PB-1 shielding diverting agent and calcium carbonate etc.These lost circulation additive materials achieve good plugging effect to a certain extent, but its acid-soluble difference, the acid-soluble ratio of such as general lost circulation additive material is below 30%.Although calcium carbonate has the high feature of acid-soluble ratio, it as bridge formation or packing material effect, can only be used alone plugging effect difference, only has with other patching materials just better with the use of its plugging effect.
Summary of the invention
General lower for plugging agent acid-soluble ratio of the prior art, the easy contaminated oil gas-bearing formation when Reservoir Section uses, the problems such as the rear unfavorable acidifying solution depollution of Oil/gas Well operation, the present invention proposes a kind of leak-stopping agent for petroleum drilling and preparation method thereof.This patching materials can with brill use, also can with other bridge material with the use of, be specially adapted to leakproof and the reservoir protection of Reservoir Section.
The invention still further relates to the application method according to plugging agent of the present invention.
According to the present invention, provide a kind of leak-stopping agent for petroleum drilling, composed of the following components: component A: calcium carbonate and/or barium carbonate, 60 ~ 80 weight parts; B component: lime powder and/or G class g cement, 15 ~ 25 weight parts; Component C: filamentary material, 5 ~ 15 weight parts.
Wherein, component A can be regarded as and serves as bridging materials, and B component serves as increasing filter and packing material.Component C be can be used for construction cement slurry, textiles manufacture, filter tip, sheet base, plastics height acid-soluble (such as acid-soluble ratio is greater than 95%.In this article, acid-soluble ratio refers to the mass percent that every 2 grams of samples can dissolve in the hydrochloric acid soln of 100ml15%.) filamentary material.
In a preferred version of the present invention, plugging agent is composed of the following components: component A is 70 ~ 80 weight parts; B component is 15 ~ 20 weight parts; Component C is 10 ~ 15 weight parts.
In preferred version of the present invention, select the bridging materials (component A) of high acid-soluble (such as acid-soluble ratio is 97-100%), increasing filter and packing material (B component) and filamentary material (component C), bridging materials and increasing filter and packing material are processed into respectively particle and the powdered material of different-grain diameter, filamentary material is processed into different length.By size and the mutual proportion relation thereof of further preferred particulates, powder and filamentary material, the good high acid-soluble patching materials of forming property.
Preferably, component A to be particle diameter the be particle of 150 ~ 250 μm; To be particle diameter be B component is greater than the powder of 0 ~ 150 μm; The length of component C is 1 ~ 2mm.
More preferably, component A to be particle diameter the be particle of 200 ~ 250 μm, B component to be particle diameter the be powder of 10 ~ 100 μm.
According to preferred version of the present invention, component C be selected from alkali free glass fibre, trevira, two type cellulose acetate and triacetate fiber one or more.Wherein, G class g cement such as can be good magnificent G class g cement.
Preferably, the acid-soluble ratio of component A is 97-100%.
The present invention also provides a kind of preparation method of plugging agent, comprising: component A, B component and component C weight part is as described above put into stirrer, and churning time is set to 1 ~ 7min, takes out, namely obtains described plugging agent.Preferably, churning time is set to 2 ~ 5min.
In addition, the present invention also provides the application method according to plugging agent of the present invention, comprising: (i) add in drilling fluid by plugging agent, and make the plugging agent containing 2 ~ 5g in the drilling fluid of every 100ml, gained mixture is used for lost circulation additive; Or (ii) plugging agent and bridge material are added in drilling fluid and form leak stopping slurry, for plugging operations, the plugging agent wherein containing 2 ~ 5g in every 100ml leak stopping slurry.Bridge material described in (ii) refers to the particulate material that the particle diameter that adapts with leakage channel width is larger, and be generally the granulate material being greater than 0.5mm, it can contact with each other formation " bridge-like structure " in leakage channel.Like this, the particulate state that the space particle diameter that the particulate material that particle diameter is larger is formed after building bridge is less or flaky material are filled, thus can reach the object of shutoff drop ply.Described bridging materials can be such as the shell, rubber grain, broken plastic pellet etc. of various particle diameter.
According to plugging agent of the present invention, it forms simple, does not need the material of complexity or costliness, does not also need the material by crossing multiple types to form, and its preparation is simple.
The acid-soluble ratio of plugging agent of the present invention in 15% hydrochloric acid can reach more than 97.5%.Therefore, this plugging agent is easy to acidification to dispel block in the application of drilling well, and can not damage reservoir.
Plugging agent according to the present invention dispersibles in drilling fluid, very little on the impact of drilling fluid rheology performance, can the fine and close mud cake of Aided Generation, improves plugging effect.This plugging agent both separately for lost circulation additive, also can coordinate with other bridge material, in big-and-middle-sized leakage plugging operations.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, but scope of the present invention is not limited to this.
Embodiment 1-4:
First, each component A shown in table 1 and B component are carried out process (such as grinding), then by the finely powdered B component of less than particulate component A and 150 μm of standard sieve screening 150 ~ 250 μm.Short silk component C being cut into 1 ~ 2mm long is for subsequent use.
Each component is put into the omnipotent stirrer of high speed according to the formula of the embodiment 1-4 shown in table 1 and stirs certain hour, take out, the plugging agent of embodiment 1-4 can be obtained.
Measure the acid-soluble ratio of plugging agent in 15% hydrochloric acid that each embodiment obtains, result is as shown in table 1.
Comparative example:
The plugging agent that comparative example uses is commercially available shielding diverting agent PB-1, and measure its acid-soluble ratio in 15% hydrochloric acid, result is as shown in table 1.
Table 1
Visible, plugging agent prepared in accordance with the present invention has higher acid-soluble, and the acid-soluble ratio of plugging agent in 15% hydrochloric acid of such as embodiment 1-4 is all greater than 97.5%, is easy to acidification to dispel block, and can not damages reservoir.
Claims (8)
1. a leak-stopping agent for petroleum drilling, composed of the following components:
Component A: calcium carbonate and/or barium carbonate, 60 ~ 80 weight parts;
B component: lime powder and/or G class g cement, 15 ~ 25 weight parts; With
Component C: filamentary material, 5 ~ 15 weight parts;
Wherein, described component A to be particle diameter the be particle of 150 ~ 250 μm; Described B component to be particle diameter the be powder of less than 150 μm; The length of described component C is 1 ~ 2mm;
Component C is the filamentary material that acid-soluble ratio is greater than 95%, and described acid-soluble ratio refers to the mass percent that every 2 grams of samples can dissolve in the hydrochloric acid soln of 100ml15%.
2. plugging agent according to claim 1, is characterized in that, described component A is 70 ~ 80 weight parts; Described B component is 15 ~ 20 weight parts; Described component C is 10 ~ 15 weight parts.
3. plugging agent according to claim 1, is characterized in that, described component A to be particle diameter the be particle of 200 ~ 250 μm, described B component to be particle diameter the be powder of 10 ~ 100 μm.
4. the plugging agent according to any one of claim 1-3, is characterized in that, described component C be selected from alkali free glass fibre, trevira, two type cellulose acetate and triacetate fiber one or more.
5. the plugging agent according to any one of claim 1-3, is characterized in that, the acid-soluble ratio of component A is 97-100%.
6. prepare a method for the plugging agent according to any one of claim 1-5, comprising: component A, B component and component C are put into stirrer, and churning time is set to 1 ~ 7min, take out, namely obtain described plugging agent.
7. method according to claim 6, is characterized in that, described churning time is set to 2 ~ 5min.
8. an application method for the plugging agent that the method according to claim 6 or 7 prepares, comprising:
I plugging agent adds in drilling fluid by (), make the plugging agent containing 2 ~ 5g in the drilling fluid of every 100ml, gained mixture is used for lost circulation additive; Or
(ii) plugging agent and bridge material are added in drilling fluid form leak stopping slurry, for plugging operations, the plugging agent wherein containing 2 ~ 5g in every 100ml leak stopping slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210225751.4A CN103509534B (en) | 2012-06-29 | 2012-06-29 | Leak-stopping agent for petroleum drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210225751.4A CN103509534B (en) | 2012-06-29 | 2012-06-29 | Leak-stopping agent for petroleum drilling |
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| Publication Number | Publication Date |
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| CN103509534A CN103509534A (en) | 2014-01-15 |
| CN103509534B true CN103509534B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210225751.4A Active CN103509534B (en) | 2012-06-29 | 2012-06-29 | Leak-stopping agent for petroleum drilling |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087274B (en) * | 2014-07-14 | 2016-10-19 | 中国石油集团渤海钻探工程有限公司 | Multistage closure pressurization sealing agent |
| CN105647494A (en) * | 2014-09-18 | 2016-06-08 | 新疆格瑞迪斯石油技术股份有限公司 | Agent for leak prevention and leak stoppage while drilling and preparation process thereof |
| CN104892836B (en) * | 2015-05-15 | 2017-02-01 | 西安理工大学 | Nano-plugging agent for oil well water plugging and preparation method thereof |
| CN105623632A (en) * | 2016-03-10 | 2016-06-01 | 中国石油天然气集团公司 | Acid soluble curing plugging agent |
| CN107011875A (en) * | 2017-04-12 | 2017-08-04 | 中国石油化工股份有限公司 | A kind of drilling fluid crack sealing agent and preparation method thereof |
| CN108865088B (en) * | 2018-07-04 | 2020-08-21 | 西南石油大学 | Temporary plugging agent, preparation method thereof, drilling fluid and application of drilling fluid in plugging of fractured reservoir while drilling |
| CN110819321B (en) * | 2018-08-13 | 2021-12-28 | 中国石油化工股份有限公司 | Curing plugging agent, preparation method thereof and plugging slurry |
| CN109135695A (en) * | 2018-09-07 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of molten plugging drilling fluid of theobromine and preparation method thereof |
| CN114395384A (en) * | 2019-04-19 | 2022-04-26 | 河南省遨太化工有限公司 | Acid-soluble pressure-bearing plugging agent for drilling fluid and preparation method thereof |
| CN112195017A (en) * | 2020-10-10 | 2021-01-08 | 蒙吉光 | Plugging agent, preparation method and application thereof in well drilling plugging |
| CN113390726B (en) * | 2021-06-10 | 2023-01-24 | 中国石油天然气股份有限公司 | Packer leakage plugging material, experimental method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1280239A (en) * | 1999-07-12 | 2001-01-17 | 四川石油管理局川东钻探公司 | Strong binding acid soluble leak stopping agent |
| CN1432620A (en) * | 2002-01-14 | 2003-07-30 | 中国石油化工股份有限公司 | Temporary leakage-stopping agent for well drilling shielding and its application |
| CN102453472A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | High strength heat resistant bridging plugging agent and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7784542B2 (en) * | 2007-05-10 | 2010-08-31 | Halliburton Energy Services, Inc. | Cement compositions comprising latex and a nano-particle and associated methods |
| US8685903B2 (en) * | 2007-05-10 | 2014-04-01 | Halliburton Energy Services, Inc. | Lost circulation compositions and associated methods |
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- 2012-06-29 CN CN201210225751.4A patent/CN103509534B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1280239A (en) * | 1999-07-12 | 2001-01-17 | 四川石油管理局川东钻探公司 | Strong binding acid soluble leak stopping agent |
| CN1432620A (en) * | 2002-01-14 | 2003-07-30 | 中国石油化工股份有限公司 | Temporary leakage-stopping agent for well drilling shielding and its application |
| CN102453472A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | High strength heat resistant bridging plugging agent and preparation method thereof |
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| CN103509534A (en) | 2014-01-15 |
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