CN102191025A - Broad-spectrum deformable while-drilling leak-proof sealing agent - Google Patents
Broad-spectrum deformable while-drilling leak-proof sealing agent Download PDFInfo
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- CN102191025A CN102191025A CN2011100883311A CN201110088331A CN102191025A CN 102191025 A CN102191025 A CN 102191025A CN 2011100883311 A CN2011100883311 A CN 2011100883311A CN 201110088331 A CN201110088331 A CN 201110088331A CN 102191025 A CN102191025 A CN 102191025A
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention relates to a broad-spectrum deformable while-drilling leak-proof sealing agent which comprises the following components in percentage by weight: 40-60% of amorphous plugging material, 15-25% of ultrafine expanding material, 5-10% of elastic tire rubber particle and 20-35% of reinforcer ultrafine calcium carbonate powder. The amorphous plugging material is amorphous slag powder, and the ultrafine expanding material is ultrafine konjaku powder, ultrafine bamboo powder or ultrafine natural rubber powder. The sealing agent has the advantages of high sealing efficiency and high acid solubility, is independent of leak layer pores and crack size, and can be used for while-drilling leak-proof sealing for permeable and cracking non-reservoirs and reservoirs.
Description
Technical field
The present invention relates to a kind of petroleum drilling engineering leak-proof sealing agent, particularly a kind of wide spectrum deformable is with boring leak-proof sealing agent.
Background technology
Leakage is one of ubiquitous technical barrier in the drilling process, and the generation of leakage can be lost a large amount of drilling fluid materialses, be expended rig time, also might cause a series of complex accident such as bit freezing, blowout, well slough, causes heavy economic losses.Solve leakage comparatively effective means be exactly in drilling fluid, to add plugging agent to carry out lost circulation additive or use plugging agent to be mixed with leakage-stop liquid weak zone is carried out shutoff effectively, back kind method need stop to bore after entering weak zone, this has just prolonged the activity duration, has increased drilling cost.
At present most widely used all is bridge joint class leak-proof leak-stopping material with boring leak-proof sealing agent, its mechanism of action is by bridge formation packing action shutoff leakage formation pore or crack, plugging agent is stronger to formation pore or crack dependency during leak stopping, if the plugging agent grain diameter is unreasonable with leakage stratum pore throat diameter coupling, to not have effective leak stopping effect, just simply seal up a door in the outer formation of the borehole wall.This type of is with boring leak-proof sealing agent shutoff narrow range, and leak-proof leak-stopping adaptability is relatively poor.
Simultaneously, though various types ofly obtained effect preferably to a certain extent with boring leak-proof sealing agent, also exist big to the influence of drilling fluid rheology performance, to a little less than the microfracture formation shut-off ability, problem such as solubility in acid difference.Most low with the sour molten rate of brill leak-proof leak-stopping material, reservoir there is potential injury, be unfavorable for reservoir protection, and the ultimate compression strength of stopping up is not high, may be pressed leakage once more because of High Pressure Difference in the drilling well, be not suitable for being applied to store up Lou the weak zone of layer together.
Summary of the invention
Purpose of the present invention be exactly at present with boring the above-mentioned shortcoming that leak-proof sealing agent exists, a kind of leak stopping efficient height is provided, do not rely on drop ply hole and flaw size, sour molten rate height, can be used for perviousness, the non-reservoir of crack property and reservoir with the high-efficiency broad spectrum intelligent alterable shape of boring leak-proof leak-stopping with boring leak-proof sealing agent.
The technical solution used in the present invention is: this wide spectrum deformable comprises following component with boring leak-proof sealing agent, each compositions in weight percentage proportioning: unformed plugging material 40～60%, ultra tiny expanding material 15～25%, elastic tyre rubber grain 5～10%, toughener calcium carbonate superfine powder 20～35%, unformed plugging material is a kind of unformed slag powders, and ultra tiny expanding material is ultra-fine Rhizoma amorphophalli powder, ultra-fine bamboo powder or ultra-fine natural rubber powder.
The rubber grain that rubber for tire in the such scheme is worn into for the expense old tire, rubber grain has snappiness when particle diameter is the 80-100 order.
The present invention has following beneficial effect: 1) shutoff efficient height: leak-proof sealing agent directly adds and carries out lost circulation additive in the mud, creep into leak stopping and carry out simultaneously, need not to make a trip, build the pressure, leak stopping process such as segmentation circulation, and this plugging agent has the leak-proof leak-stopping double effects, but quick blocking weak zone under differential pressure action has the effect of fast blockage; 2) shutoff scope is wide, does not rely on drop ply hole and flaw size: unformed plugging material in the leak-proof sealing agent is because its unformed property need not to require its grain diameter and the strict coupling of leakage stratum pore throat diameter; In the component ultra tiny expanding material enter behind crack, the hole can be under the resident fluid effect dilatational strain shutoff leakage channel; Gentle elastic expansion material then can be got into space or crack, then shutoff leakage channel in the process of resiling in the component under differential pressure action; Calcium carbonate superfine powder can enter the formed plugged zone of above component microporosity in the component, strengthens plugged zone intensity; 3) sour molten rate height, can be used for storage leaks with layer: material is based on the solubility in acid material in the component, make plugged zone that this leak-proof sealing agent forms can be after acidifying destroyed and acidification to dispel block, reach the purpose of protection reservoir, not only can be used for non-reservoir leakage but also can be used for the reservoir leakage; 4) good with the drilling fluid consistency, property of drilling fluid there is not influence substantially, can keep property of drilling fluid stable; 5) can pass through vibratory screening apparatus smoothly, not stick with paste sieve, need not during use to stop to bore; 6) construction technology is simple, during use, can directly add in the drilling fluid.
Embodiment:
The invention will be further described below in conjunction with specific examples.
Embodiment 1
40 kilograms of the natural ore deposit of input mine tailings, 25 kilograms of ultra-fine Rhizoma amorphophalli powders, 5 kilograms of elastic tyre rubber grains, calcium carbonate superfine powder mix for 30 kilograms in mixing machine.
Embodiment 2
50 kilograms of the natural ore deposit of input mine tailings, 20 kilograms of ultra-fine Rhizoma amorphophalli powders, 5 kilograms of elastic tyre rubber grains, calcium carbonate superfine powder mix for 25 kilograms in mixing machine.
Embodiment 3
40 kilograms of the natural ore deposit of input mine tailings, 20 kilograms in ultra-fine bamboo powder, 5 kilograms of elastic tyre rubber grains, calcium carbonate superfine powder mix for 35 kilograms in mixing machine.
Embodiment 4
40 kilograms of blast-furnace slags of input, 20 kilograms in ultra-fine bamboo powder, 10 kilograms of elastic tyre rubber grains, calcium carbonate superfine powder mix for 30 kilograms in mixing machine.
Embodiment 5
45 kilograms of blast-furnace slags of input, 15 kilograms in ultra-fine natural rubber powder, 5 kilograms of elastic tyre rubber grains, calcium carbonate superfine powder mix for 35 kilograms in mixing machine.
Directly add in the drilling fluid during use, mass concentration is 2～5%.
Present embodiment is joined in the 3% base slurry according to mass concentration 2～5%, carries out visual casting bed permeability test:
Drill-feeding plugging agent plugging effect experiment table 1
| Variable | Casting bed dehydration 0.7MPa, 30min | Filtrate immersion depth (mm) |
| 3% base slurry | / | All penetrate (200) |
| 3% base slurry+2% embodiment 1 | 0 | 86 |
| 3% base slurry+2% embodiment 2 | 0 | 84 |
| 3% base slurry+2% embodiment 3 | 0 | 83 |
| 3% base slurry+2% embodiment 4 | 0 | 82 |
| 3% base slurry+2% embodiment 5 | 0 | 88 |
| 3% base slurry+3% embodiment 1 | 0 | 65 |
| 3% base slurry+3% embodiment 2 | 0 | 63 |
| 3% base slurry+3% embodiment 3 | 0 | 62 |
| 3% base slurry+3% embodiment 4 | 0 | 60 |
| 3% base slurry+3% embodiment 5 | 0 | 66 |
Annotate: casting bed experiment material therefor is 20～40 order quartz sands, and pressure is 0.7MPa, and the time is 30min.
As can be seen from Table 1, do not add drill-feeding plugging agent, the base slurry all penetrates, and behind the adding drill-feeding plugging agent, the filtrate immersion depth is reduced to 60mm, and the casting bed dehydration is 0, and dosage is big more, and the casting bed immersion depth is more little, and plugging effect is good more.
The drill-feeding plugging agent of embodiment 4 systems is joined in the drilling fluid according to 2～5%, and experimental result is as follows:
Drill-feeding plugging agent and drilling fluid compatibleness and leak stopping experiment table 2
Annotate: PV is a plastic viscosity, and YP is a yield value, and GEL is a gel strength, and the filtrate immersion depth is a filtrate immersion depth in the visual casting bed permeability test, and used casting bed is 20～40 order quartz sands, and pressure is 0.7MPa, and the time is 30min.
Used drilling fluid composition is:
3% base slurry+0.5%NaOH+0.3PAC-HV+0.1%XC+2%KFT
Wherein PAC-HV is high adhesive aggregation anionic cellulose, and XC is an xanthan gum, and KFT is a sulfonated gilsonite.
As can be seen from Table 2, drill-feeding plugging agent of being developed and drilling fluid system compatibleness are good, and the drilling fluid rheology performance does not have obvious variation behind the adding drill-feeding plugging agent, and behind the adding drill-feeding plugging agent, the filtrate immersion depth is reduced to 60mm, and dosage is big more, the casting bed immersion depth is more little, and plugging effect is good more.
Claims (3)
1. a wide spectrum deformable is with boring leak-proof sealing agent, comprise following component, each compositions in weight percentage proportioning: unformed plugging material 40～60%, ultra tiny expanding material 15～25%, elastic tyre rubber grain 5～10%, toughener calcium carbonate superfine powder 20～35%, unformed plugging material is a kind of unformed slag powders, and ultra tiny expanding material is ultra-fine Rhizoma amorphophalli powder, ultra-fine bamboo powder or ultra-fine natural rubber powder.
2. wide spectrum deformable according to claim 1 is with boring leak-proof sealing agent, and it is characterized by: unformed slag powders is natural ore deposit mine tailing or blast-furnace slag.
3. wide spectrum deformable according to claim 2 is with boring leak-proof sealing agent, and it is characterized by: unformed slag powders particle diameter is the 100-300 order; Ultra-fine Rhizoma amorphophalli powder, ultra-fine bamboo powder or ultra-fine natural rubber powder diameter are the 200-300 order; Elastic tyre rubber grain particle diameter is the 100-150 order; The calcium carbonate superfine powder particle diameter is the 800-1000 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100883311A CN102191025A (en) | 2011-04-11 | 2011-04-11 | Broad-spectrum deformable while-drilling leak-proof sealing agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100883311A CN102191025A (en) | 2011-04-11 | 2011-04-11 | Broad-spectrum deformable while-drilling leak-proof sealing agent |
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| CN102191025A true CN102191025A (en) | 2011-09-21 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740339A (en) * | 2013-12-31 | 2014-04-23 | 东营泰尔石油技术有限公司 | Plugging filler |
| CN103740346A (en) * | 2013-12-31 | 2014-04-23 | 东营泰尔石油技术有限公司 | Plugging flexibilizer |
| CN104774599A (en) * | 2015-03-25 | 2015-07-15 | 新疆贝肯能源工程股份有限公司 | Highly elastic collapse preventing and leakage stopping agent for drilling fluids, and preparation method thereof |
| CN105038742A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | High-elasticity waterproof plugging agent |
| CN105037819A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | Environmental-friendly plugging agent |
| CN110892038A (en) * | 2017-07-14 | 2020-03-17 | 沙特阿拉伯石油公司 | Waste automobile tire as plugging material |
| CN111684041A (en) * | 2018-02-06 | 2020-09-18 | 沙特阿拉伯石油公司 | ARC hybrid particle mixtures for sealer and stopper quality enhancement |
| CN112980411A (en) * | 2021-02-26 | 2021-06-18 | 大庆弘民石油科技有限公司 | Selective long-acting plugging agent for oil field and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6006835A (en) * | 1998-02-17 | 1999-12-28 | Halliburton Energy Services, Inc. | Methods for sealing subterranean zones using foamed resin |
| CN101638576A (en) * | 2009-08-25 | 2010-02-03 | 谢军 | Shielding and temporary plugging gelling agent for drilling fluid and production method and use method thereof |
| CN101885961A (en) * | 2010-06-30 | 2010-11-17 | 梁开方 | Water plugging profile control agent |
-
2011
- 2011-04-11 CN CN2011100883311A patent/CN102191025A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6006835A (en) * | 1998-02-17 | 1999-12-28 | Halliburton Energy Services, Inc. | Methods for sealing subterranean zones using foamed resin |
| CN101638576A (en) * | 2009-08-25 | 2010-02-03 | 谢军 | Shielding and temporary plugging gelling agent for drilling fluid and production method and use method thereof |
| CN101885961A (en) * | 2010-06-30 | 2010-11-17 | 梁开方 | Water plugging profile control agent |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740339A (en) * | 2013-12-31 | 2014-04-23 | 东营泰尔石油技术有限公司 | Plugging filler |
| CN103740346A (en) * | 2013-12-31 | 2014-04-23 | 东营泰尔石油技术有限公司 | Plugging flexibilizer |
| CN104774599A (en) * | 2015-03-25 | 2015-07-15 | 新疆贝肯能源工程股份有限公司 | Highly elastic collapse preventing and leakage stopping agent for drilling fluids, and preparation method thereof |
| CN105038742A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | High-elasticity waterproof plugging agent |
| CN105037819A (en) * | 2015-07-14 | 2015-11-11 | 桂林市和鑫防水装饰材料有限公司 | Environmental-friendly plugging agent |
| CN110892038A (en) * | 2017-07-14 | 2020-03-17 | 沙特阿拉伯石油公司 | Waste automobile tire as plugging material |
| CN111684041A (en) * | 2018-02-06 | 2020-09-18 | 沙特阿拉伯石油公司 | ARC hybrid particle mixtures for sealer and stopper quality enhancement |
| CN112980411A (en) * | 2021-02-26 | 2021-06-18 | 大庆弘民石油科技有限公司 | Selective long-acting plugging agent for oil field and preparation method thereof |
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Application publication date: 20110921 |