CN103756655A - Lost circulation additive for blocking loss of shallow casing and preparation method thereof - Google Patents
Lost circulation additive for blocking loss of shallow casing and preparation method thereof Download PDFInfo
- Publication number
- CN103756655A CN103756655A CN201310727758.0A CN201310727758A CN103756655A CN 103756655 A CN103756655 A CN 103756655A CN 201310727758 A CN201310727758 A CN 201310727758A CN 103756655 A CN103756655 A CN 103756655A
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- China
- Prior art keywords
- plugging agent
- parts
- delayed expansion
- circulation additive
- lost circulation
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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
- C09K8/42—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
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/44—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
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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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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a lost circulation additive for blocking loss of a shallow casing. The los circulation additive is prepared from the following components in parts by weight: 0.1-5 parts of rapid filtration fiber, 0.5-5 parts of bentonite, 0.5-3 parts of filter aid, 0.5-3 parts of enhancer and 0.5-2 parts of delayed expansion plugging agent. The lost circulation additive has high dehydration characteristics, and can effectively resist dilution of formation water. A main component natural plant fiber has strong hydrophily and large specific surface area, so that the formed plugged zone has stronger adhesive strength on the water-wetted rock surface, the plugged zone can be effectively prevented from being damaged due to flow-back of a leakage layer, delayed expansion particles in the lost circulation additive can absorb water to expand after a solid-phase plugged zone is formed, the strength of the plugged zone is further enhanced, and an effective barrier is built for subsequent cement cementing.
Description
Technical field
The present invention relates to petroleum drilling leakage stopping technology field, relate in particular to plugging agent of a kind of effective shutoff shallow-layer sleeve leakage and preparation method thereof.
Background technology
Shallow-layer sleeve leakage is the ubiquitous problem of maturing field, and difficulty of governance is large, and Meteorological is high.Shallow-layer sleeve leakage well is more and more at present, and administering is mainly to take casing replacing and shutoff, and because casing replacing expense is higher, scene adopts shutoff to administer shallow-layer leakage.But it is very low to adopt oil well cement blocking agent to carry out shallow-layer sleeve plugging success ratio, needs shutoff repeatedly 2～3 times.The shutoff of shallow-layer sleeve leakage well has become a technical barrier of site operation.
Summary of the invention
An object of the present invention is to provide a kind of effectively plugging agent of shutoff shallow-layer sleeve leakage.
Another object of the present invention is to provide a kind of preparation method of above-mentioned plugging agent.
For this reason, technical scheme of the present invention is as follows:
A plugging agent for shutoff shallow-layer sleeve leakage, is prepared from by the component of following weight part:
Quick dehydration fiber 0.1-5 part,
Wilkinite 0.5-5 part,
Flocculating aids 0.5-3 part,
Toughener 0.5-3 part
Delayed expansion plugging agent 0.5-2 part.
Described quick dehydration fiber is paper fiber, and the length of described paper fiber is 0.1～2mm.
Described flocculating aids is a kind of in diatomite, gac, scrap metal or slag, or wherein arbitrarily several with arbitrarily than combination.
Described toughener is CaO; Described delayed expansion plugging agent is delayed expansion water-absorbing resin.
A preparation method for above-mentioned plugging agent, comprises the following steps:
1) in the bentonite slurry of prehydration, add described quick dehydration fiber, high-speed stirring 3Omin;
2) add described flocculating aids, high-speed stirring 30min;
3) add described toughener, high-speed stirring 30min;
4) add described delayed expansion plugging agent, stirring at low speed 3Omin, obtains described plugging agent.
Plugging agent of the present invention has the following advantages:
(1) high dehydration characteristic, fast dehydration under differential pressure action, forms fine and close, firmly and have a solid phase plugged zone of certain length, the dilution that can effectively resist local water;
(2) because this plugging agent main ingredient is natural plant fibre, there is extremely strong wetting ability and larger specific surface area, so the plugged zone of its formation has stronger bonding force for the rock surface of water-wet, can effectively prevent from destroying plugged zone because drop ply returns to tell;
(3) the delayed expansion particle in this plugging agent can water-swelling after solid phase plugged zone forms, and further strengthens the intensity of plugged zone, also for follow-up cement sealing, sets up barrier effectively.
Embodiment
Below by specific embodiment, plugging agent of the present invention and preparation method thereof is elaborated.It is to be noted that following examples, only for further illustrating of the present invention, can not be interpreted as limiting the scope of the invention, some nonessential improvement that the present invention is made and adjustment still belong to protection scope of the present invention.
In following examples, the umber of each component is weight part.The fiber of paper described in embodiment is prepared from by a kind of of wood pulp, straw pulp, reed paper pulp, cotton paper slurry, bamboo pulp, numb paper pulp and paper waste or any several combination; The regulation of " the bentonitic technical requirements of drilling well level " in described wilkinite conformance with standard GB/T5005-2010 < < drilling fluid materials standard > >.
Embodiment 1
Take 0.1 part of wood pulp, 2 parts of wilkinites, 0.8 part, diatomite, 5 parts of 0.5 part of CaO and delayed expansion water-absorbing resins (time 10min expands).
Embodiment 2
Take 1.5 parts of straw pulps, 5 parts of wilkinites, 3 parts of gacs, 2 parts of 3 parts of CaO and delayed expansion water-absorbing resins (time 10min expands).
Embodiment 3
Take 5 parts of bamboo pulps, 0.5 part of wilkinite, 0.5 part, scrap metal and slag, 0.5 part of 1 part of CaO and delayed expansion water-absorbing resin (time 10min expands).
Compound method:
In the bentonite slurry of prehydration, add paper fiber, after high-speed stirring 3Omin, add diatomite, after high-speed stirring 30min, add CaO, continue high-speed stirring 30min, finally add delayed expansion water-absorbing resin, stirring at low speed 3Omin, obtains leak stopping slurry.
Experimental technique:
Shutoff experiment adopts the multi-joint filter press test of the sensible product SD-6A type in sea, Qingdao, and concrete numerical value sees the following form:
| Case study on implementation | Instantaneous filter loss mL | The filter loss mL of 10min | The filter loss mL of 30min | Hmc mm |
| Embodiment 1 | 80 | 100 | 102 | 6 |
| Embodiment 2 | 60 | 85 | 88 | 4 |
| Embodiment 3 | 73 | 90 | 91 | 5 |
From table, experimental data can be found out, the plugging agent of shutoff shallow-layer sleeve leakage of the present invention, not only can form thicker mud cake in moment, by the water-swelling time of control lag expanded granular, can also control the size of filter loss, for on-the-spot operability of the present invention provides guarantee.
Claims (7)
1. a plugging agent for shutoff shallow-layer sleeve leakage, is characterized in that, by the component of following weight part, is prepared from:
Quick dehydration fiber 0.1-5 part,
Wilkinite 0.5-5 part,
Flocculating aids 0.5-3 part,
Toughener 0.5-3 part,
Delayed expansion plugging agent 0.5-2 part.
2. according to the plugging agent described in right 1, it is characterized in that, described quick dehydration fiber is paper fiber.
3. plugging agent according to claim 1 and 2, is characterized in that, the length of described paper fiber is 0.1～2mm.
4. plugging agent according to claim 1, is characterized in that, described flocculating aids is a kind of in diatomite, gac, scrap metal or slag, or wherein arbitrarily several with arbitrarily than combination.
5. plugging agent according to claim 1, is characterized in that, described toughener is CaO.
6. plugging agent according to claim 1, is characterized in that, described delayed expansion plugging agent is delayed expansion water-absorbing resin.
7. a preparation method for plugging agent described in claim 1, is characterized in that comprising the following steps:
1) in the bentonite slurry of prehydration, add described quick dehydration fiber, high-speed stirring 3Omin;
2) add described flocculating aids, high-speed stirring 30min;
3) add described toughener, high-speed stirring 30min;
4) add described delayed expansion plugging agent, stirring at low speed 3Omin, obtains described plugging agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727758.0A CN103756655A (en) | 2013-12-19 | 2013-12-19 | Lost circulation additive for blocking loss of shallow casing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310727758.0A CN103756655A (en) | 2013-12-19 | 2013-12-19 | Lost circulation additive for blocking loss of shallow casing and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103756655A true CN103756655A (en) | 2014-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310727758.0A Pending CN103756655A (en) | 2013-12-19 | 2013-12-19 | Lost circulation additive for blocking loss of shallow casing and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN103756655A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152125A (en) * | 2014-08-16 | 2014-11-19 | 成都汉元君业油田技术有限公司 | High dehydration solidification pressuring bearing plugging agent |
| CN105315975A (en) * | 2015-12-07 | 2016-02-10 | 长江大学 | Sealing repairing liquid for sleeve |
| CN106190070A (en) * | 2016-07-15 | 2016-12-07 | 河南省遨太化工有限公司 | Drilling fluid acid-soluble pressurization sealing agent and preparation method |
| CN106800389A (en) * | 2016-12-31 | 2017-06-06 | 濮阳市华瑞通能源工程技术有限公司 | A kind of wave making machine seal stoppage agent high and preparation method thereof |
| CN108977183A (en) * | 2017-06-02 | 2018-12-11 | 中石化石油工程技术服务有限公司 | Adaptive sealing agent and preparation method |
| CN109705827A (en) * | 2017-10-25 | 2019-05-03 | 中国石油化工股份有限公司 | Oil drilling leak stopping pressure-bearing agent and preparation method thereof |
| CN111944500A (en) * | 2019-05-17 | 2020-11-17 | 中石化石油工程技术服务有限公司 | Composite leaking stoppage drilling fluid based on aluminum shavings |
| CN112210353A (en) * | 2019-07-10 | 2021-01-12 | 中石化石油工程技术服务有限公司 | High-filtration high-acid-solubility plugging agent for reservoir plugging and preparation method thereof |
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| US4289632A (en) * | 1979-09-20 | 1981-09-15 | Phillips Petroleum Company | Lost circulation material for sealing permeable formations |
| CN1047326A (en) * | 1989-05-17 | 1990-11-28 | 四川石油管理局钻采工艺研究所 | A kind of leakage-stopping composition |
| US6976537B1 (en) * | 2002-01-30 | 2005-12-20 | Turbo-Chem International, Inc. | Method for decreasing lost circulation during well operation |
| CN101353570A (en) * | 2008-09-03 | 2009-01-28 | 中国石油新疆油田分公司采油工艺研究院 | Heavy crude thermal recovery steamed well slag plugging agent |
| US20090054269A1 (en) * | 2007-08-24 | 2009-02-26 | Halliburton Energy Services, Inc. | Methods and Compositions Utilizing Lost-Circulation Materials Comprising Composite Particulates |
| CN102443383A (en) * | 2011-09-06 | 2012-05-09 | 中国石油天然气集团公司 | High-dehydration hardenable plugging sealing agent |
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| US4289632A (en) * | 1979-09-20 | 1981-09-15 | Phillips Petroleum Company | Lost circulation material for sealing permeable formations |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104152125A (en) * | 2014-08-16 | 2014-11-19 | 成都汉元君业油田技术有限公司 | High dehydration solidification pressuring bearing plugging agent |
| CN104152125B (en) * | 2014-08-16 | 2017-08-25 | 成都汉元君业油田技术有限公司 | A kind of high dehydration solidification pressure-bearing sealing agent |
| CN105315975A (en) * | 2015-12-07 | 2016-02-10 | 长江大学 | Sealing repairing liquid for sleeve |
| CN105315975B (en) * | 2015-12-07 | 2019-02-26 | 长江大学 | A kind of bobbin seal reparation liquid |
| CN106190070A (en) * | 2016-07-15 | 2016-12-07 | 河南省遨太化工有限公司 | Drilling fluid acid-soluble pressurization sealing agent and preparation method |
| CN106800389A (en) * | 2016-12-31 | 2017-06-06 | 濮阳市华瑞通能源工程技术有限公司 | A kind of wave making machine seal stoppage agent high and preparation method thereof |
| CN108977183A (en) * | 2017-06-02 | 2018-12-11 | 中石化石油工程技术服务有限公司 | Adaptive sealing agent and preparation method |
| CN109705827A (en) * | 2017-10-25 | 2019-05-03 | 中国石油化工股份有限公司 | Oil drilling leak stopping pressure-bearing agent and preparation method thereof |
| CN111944500A (en) * | 2019-05-17 | 2020-11-17 | 中石化石油工程技术服务有限公司 | Composite leaking stoppage drilling fluid based on aluminum shavings |
| CN112210353A (en) * | 2019-07-10 | 2021-01-12 | 中石化石油工程技术服务有限公司 | High-filtration high-acid-solubility plugging agent for reservoir plugging and preparation method thereof |
| CN112210353B (en) * | 2019-07-10 | 2022-12-13 | 中石化石油工程技术服务有限公司 | High-filtration high-acid-solubility plugging agent for reservoir plugging and preparation method thereof |
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Application publication date: 20140430 |
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