CN101148578A - Strong-inhibition circulating micro-foam drilling fluid or completion fluid - Google Patents
Strong-inhibition circulating micro-foam drilling fluid or completion fluid Download PDFInfo
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- CN101148578A CN101148578A CNA2007101135576A CN200710113557A CN101148578A CN 101148578 A CN101148578 A CN 101148578A CN A2007101135576 A CNA2007101135576 A CN A2007101135576A CN 200710113557 A CN200710113557 A CN 200710113557A CN 101148578 A CN101148578 A CN 101148578A
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Abstract
The present invention discloses one kind of recyclable microbubble drilling and completing fluid, which includes basic slurry comprising bentonite 2-3 (in weight portions, the same below), salt tolerant clay 2-3, sodium carbonate 0.2-0.3 and water 100; and additives comprising composite inhibitor SD-YZ 1-5, low density tackifier SD-LVC 0.5-3, low density filter loss reducing tackifier SD-LAC 1-3, low density flow form regulator SD-LRC 1-5 and low density regulator SD-LDC 1.5-2.5. The recyclable microbubble drilling and completing fluid has several functions of inhibiting the hydrating expansion of mudstone and protecting oil and gas reservoir, is suitable for different types of stratum. It is applied in well drilling and well completing construction, especially, for low pressure and low permeation stratum.
Description
One, technical field
The present invention relates to drilling well, well finishing liquid, particularly a kind of strong-inhibition circulating micro-foam drilling fluid or well finishing liquid.
Two, background technology
The micro-foam drilling fluid technology that existing petroleum drilling uses, there is (1) China Patent No. 200410021014.8 to disclose " a kind of microbubble whipping agent and drilling fluid composition thereof ", its prescription is: 5% base slurry+0.3%MF+0.03%SF+2%SMP-II+0.05%80A-51+0.2%XC+1%SPNH, its shortcoming or deficiency are to be used for hard formation, froth stability is poor, can not improve the inhibition ability of drilling fluid; (2) China Patent No. 20041001323.7 discloses " residual active sludge protein is as application of foam drilling fluid and preparation method thereof ", and its prescription is: wilkinite 5, tackifier 0.1, stablizer 0.2, whipping agent 0.5; Tackifier are carboxymethyl cellulose; Stablizer is a polyacrylamide.Above-mentioned foam technology function singleness, bad adaptability can only be prepared with fresh water, can only be adapted to the limestone formation drilling well, can not be used for saliferous strata, when common mudstone stratum is constructed, there is not restraining effect, density can not reduce, and aggravation down-hole complexity is when mud stone shale reservoir applications, solid particle in injected water very easily takes place, reservoir is caused severe contamination, weak effect, use cost height.
Three, summary of the invention
The technical problem that the present invention solves provides a kind of strong-inhibition circulating micro-foam drilling fluid or well finishing liquid, shortcoming or deficiency that it can overcome effectively or avoid existing in the above-mentioned prior art, can be applied to the mudstone stratum and the saliferous strata of low pressure and low permeability, the wider model of its range of application.
Strong-inhibition circulating micro-foam drilling fluid of the present invention or well finishing liquid, it consists of weight part:
(A) base slurry: the anti-salt clay of wilkinite 2-3 2-3 soda ash 0.2-0.3 water 100
(B) additive: 1. composite inhibitor SD-YZ 1-5
2. low density is carried stick SD-LVC 0.5-3
3. low density is carried sticking fluid loss agent SD-LAC 1-3
4. low density flow pattern conditioning agent SD-LRC 1-5
5. low density conditioning agent SD-LDC 1.5-2.5.
Wherein, described composite inhibitor SD-YZ, content 1-5 part is KCI: NaCI: Na
2SiO
4The ratio combination of=1-5: 3-10: 1-3.Described low density is carried stick SD-LVC, and content 0.5-3 part is that the ratio of CMC-HV: XC: HEC=0.5-2: 1-3: 0.5-2 is combined.Described low density is carried sticking fluid loss agent SD-LAC, and content 1-3 part is that the ratio of SMP-2: SJ-1=2-5: 1-4 is combined.Described low density flow pattern conditioning agent SD-LRC, content 1-5 part is ABS: polymeric alcohol: F873=2-4: 6-10: the ratio of 6-10 is combined.Described low density conditioning agent SD-LDC, content 0.5-2.5 part is that the ratio of DFD-140: CMC-LV: PAC-HV=3-8: 6-10: 3-8 is combined.
Compound method: use conventional compound method, preparation (A) adds (B) in (A) more successively earlier.
The present invention has following advantage or beneficial effect compared with prior art:
1, have very strong inhibition, system is stable, and the good rheological property large rock-carrying ability is strong;
2, the complicated drilling speed that improves in down-hole can be reduced, low pressure, hypotonic mudstone stratum drilling speed can be improved more than 30% according to measuring and calculating;
3, have the good swollen ability of rising of inhibition clay aquation, can reduce reservoir damage caused, the protection hydrocarbon zone is effective, reaches more than 98% according to the measuring and calculating permeability resume figure;
4, the adjustable density scope is wide;
5, preparation is simple, easy to operate;
6, multi-functional, adaptability is strong, both can be used for carbonate strata, can be used for again in the drilling well, completion of mudstone stratum.
Four, description of drawings
No accompanying drawing.
Five, embodiment:
A kind of strong-inhibition circulating micro-foam drilling fluid or well finishing liquid, it consists of weight part:
(A) base slurry: the anti-salt clay of wilkinite 2-3 2-3 soda ash 0.2-0.3 water 100
(B) additive: 1. composite inhibitor SD-YZ 1-5
2. low density is carried stick SD-LVC 0.5-3
3. low density is carried sticking fluid loss agent SD-LAC 1-3
4. low density flow pattern conditioning agent SD-LRC 1-5
5. low density conditioning agent SD-LDC 1.5-2.5.
Wherein, described composite inhibitor SD-YZ, content 1-5 part is KCI: NaCI: Na
2SiO
4The ratio of=1-5: 3-10: 1-3 is combined.Described low density is carried stick SD-LVC, and content 0.5-3 part is that the ratio of CMC-HV: XC: HEC=0.5-2: 1-3: 0.5-2 is combined.Described low density is carried sticking fluid loss agent SD-LAC, and content 1-3 part is that the ratio of SMP-2: SJ-1=2-5: 1-4 is combined.Described low density flow pattern conditioning agent SD-LRC, content 1-5 part is ABS: polymeric alcohol: F873=2-4: 6-10: the ratio of 6-10 is combined.Described low density conditioning agent SD-LDC content 0.5-2.5 part is that the ratio of DFD-140: CMC-LV: PAC-HV=3-8: 6-10: 3-8 is combined.
Compound method: use conventional compound method, preparation (A) adds (B) in (A) more successively earlier.
Specific embodiment sees Table 1:
Its every performance test data such as table 2:
| Embodiment | Density g/cm 3 | Plastic viscosity mPa.s | Yield value Pa | API filtration ml | Foam stabilization rate % |
| The 1st example | 0.85 | 11 | 6 | 9.5 | 92 |
| The 2nd example | 0.81 | 16 | 8 | 8 | 93 |
| The 3rd example | 0.76 | 22 | 10 | 5 | 95 |
As seen from the above table, the present invention is as drilling well, well finishing liquid, and performance is superior.
Claims (1)
1. strong-inhibition circulating micro-foam drilling fluid or well finishing liquid, it consists of weight part:
(A) base slurry: the anti-salt clay of wilkinite 2-3 2-3 soda ash 0.2-0.3 water 100
(B) additive: 1. composite inhibitor SD-YZ 1-5
2. low density is carried stick SD-LVC 0.5-3
3. low density is carried sticking fluid loss agent SD-LAC 1-3
4. low density flow pattern conditioning agent SD-LRC 1-5
5. low density conditioning agent SD-LDC 1.5-2.5.
Wherein said composite inhibitor SD-YZ is by KCI: NaCI: Na
2SiO
4The ratio combination of=1-5: 3-10: 1-3;
Low density is proposed the ratio combination of stick SD-LVC by CMC-HV: XC: HEC=0.5-2: 1-3: 0.5-2;
Low density is proposed the ratio combination of sticking fluid loss agent SD-LAC by SMP-2: SJ-1=2-5: 1-4;
Low density flow pattern conditioning agent SD-LRC is by ABS: the ratio combination of polymeric alcohol: F873=2-4: 6-10: 6-10;
Low density conditioning agent SD-LDC is combined by the ratio of DFD-140: CMC-LV: PAC-HV=3-8: 6-10: 3-8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101135576A CN100535075C (en) | 2007-10-27 | 2007-10-27 | Strong-inhibition circulating micro-foam drilling fluid or completion fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101135576A CN100535075C (en) | 2007-10-27 | 2007-10-27 | Strong-inhibition circulating micro-foam drilling fluid or completion fluid |
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| Publication Number | Publication Date |
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| CN101148578A true CN101148578A (en) | 2008-03-26 |
| CN100535075C CN100535075C (en) | 2009-09-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851492A (en) * | 2009-08-14 | 2010-10-06 | 新疆德蓝股份有限公司 | High-temperature high-pressure salt-resistant high-density drilling fluid |
| CN102278068A (en) * | 2010-06-12 | 2011-12-14 | 中国石油化工股份有限公司 | Method for treating formation water production in gas drilling process |
| CN103740343A (en) * | 2014-01-16 | 2014-04-23 | 中国石油集团渤海钻探工程有限公司 | Na2SiO3-KCl anti-collapse drilling fluid and preparation method thereof |
| CN104046342A (en) * | 2014-05-30 | 2014-09-17 | 中国石油化工集团公司 | High temperature-resistant and solid-free micro-foam drilling fluid or completion fluid |
| CN108165244A (en) * | 2018-02-07 | 2018-06-15 | 西南石油大学 | A kind of drilling fluid for inhibiting surface of clay aquation and preparation method thereof |
-
2007
- 2007-10-27 CN CNB2007101135576A patent/CN100535075C/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851492A (en) * | 2009-08-14 | 2010-10-06 | 新疆德蓝股份有限公司 | High-temperature high-pressure salt-resistant high-density drilling fluid |
| CN101851492B (en) * | 2009-08-14 | 2013-04-03 | 新疆德蓝股份有限公司 | High-temperature high-pressure salt-resistant high-density drilling fluid |
| CN102278068A (en) * | 2010-06-12 | 2011-12-14 | 中国石油化工股份有限公司 | Method for treating formation water production in gas drilling process |
| CN103740343A (en) * | 2014-01-16 | 2014-04-23 | 中国石油集团渤海钻探工程有限公司 | Na2SiO3-KCl anti-collapse drilling fluid and preparation method thereof |
| CN103740343B (en) * | 2014-01-16 | 2016-03-09 | 中国石油集团渤海钻探工程有限公司 | Na 2siO 3-KCl caving-preventing drilling fluid and preparation method thereof |
| CN104046342A (en) * | 2014-05-30 | 2014-09-17 | 中国石油化工集团公司 | High temperature-resistant and solid-free micro-foam drilling fluid or completion fluid |
| CN108165244A (en) * | 2018-02-07 | 2018-06-15 | 西南石油大学 | A kind of drilling fluid for inhibiting surface of clay aquation and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN100535075C (en) | 2009-09-02 |
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