CN105542730A - Drilling fluid additive, drilling fluid and drilling method - Google Patents
Drilling fluid additive, drilling fluid and drilling method Download PDFInfo
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- CN105542730A CN105542730A CN201410587009.7A CN201410587009A CN105542730A CN 105542730 A CN105542730 A CN 105542730A CN 201410587009 A CN201410587009 A CN 201410587009A CN 105542730 A CN105542730 A CN 105542730A
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- drilling fluid
- positively charged
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- additive
- drilling
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- 238000005553 drilling Methods 0.000 title claims abstract description 130
- 239000012530 fluid Substances 0.000 title claims abstract description 100
- 239000000654 additive Substances 0.000 title claims abstract description 57
- 230000000996 additive effect Effects 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- 125000002091 cationic group Chemical group 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 34
- 239000002002 slurry Substances 0.000 claims description 32
- 239000003112 inhibitor Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- FLEHQRTTWKDNGI-XTJILODYSA-N (1s,3r)-5-[(2e)-2-[(7ar)-1-[(2s)-5-(cyclopropylamino)pentan-2-yl]-7a-methyl-2,3,3a,5,6,7-hexahydro-1h-inden-4-ylidene]ethylidene]-2-methylidenecyclohexane-1,3-diol Chemical compound C([C@H](C)C1[C@]2(CCCC(/C2CC1)=C\C=C1C[C@@H](O)C(=C)[C@@H](O)C1)C)CCNC1CC1 FLEHQRTTWKDNGI-XTJILODYSA-N 0.000 claims description 5
- 102100030613 Carboxypeptidase A1 Human genes 0.000 claims description 4
- 101000772551 Homo sapiens Carboxypeptidase A1 Proteins 0.000 claims description 4
- 101150005393 CBF1 gene Proteins 0.000 claims description 3
- 101100329224 Coprinopsis cinerea (strain Okayama-7 / 130 / ATCC MYA-4618 / FGSC 9003) cpf1 gene Proteins 0.000 claims description 3
- 101100329225 Coprinopsis cinerea (strain Okayama-7 / 130 / ATCC MYA-4618 / FGSC 9003) cpf2 gene Proteins 0.000 claims description 3
- 101150059443 cas12a gene Proteins 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract description 13
- 150000001768 cations Chemical class 0.000 abstract description 9
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 description 35
- 239000000440 bentonite Substances 0.000 description 15
- 229910000278 bentonite Inorganic materials 0.000 description 15
- 239000003292 glue Substances 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000002734 clay mineral Substances 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 230000003019 stabilising effect Effects 0.000 description 3
- 101000711475 Homo sapiens Serpin B10 Proteins 0.000 description 2
- 102100034012 Serpin B10 Human genes 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 102100030614 Carboxypeptidase A2 Human genes 0.000 description 1
- 101001125858 Homo sapiens Peptidase inhibitor 15 Proteins 0.000 description 1
- 108091006675 Monovalent cation:proton antiporter-2 Proteins 0.000 description 1
- 102100029323 Peptidase inhibitor 15 Human genes 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011301 petroleum pitch Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a drilling fluid additive, a drilling fluid and a drilling method. The drilling fluid additive provided by the invention comprises the following components in parts by weight: CPI? 5-15 parts of a cation coating agent CPH-24-8 parts, 15-10 parts of a cation type fluid loss additive CPF-and a cation type fluid loss additive CPF? 1-3 parts of cationic plugging agent CPA? 1-2 parts. The drilling fluid containing the drilling fluid additive has high electromotive potential, good stabilizing effect on well walls, and good salt resistance, and is particularly suitable for medium-high density balanced stratum of a salt layer.
Description
Technical field
The invention belongs to drilling technique field, particularly relate to a kind of drilling fluid additive, drilling fluid and boring method.
Background technology
Drilling well utilizes mechanical means, stratum is drilled to the engineering of the cylindrical orifice with certain depth.Drilling fluid is the circulation flushing medium used in hole in drilling process, and it has at the bottom of clear well, cutting carring, the balance borehole wall and reservoir pressure, cooling and lubricates drill bit and the multiple effect such as drill string, hydrofracture rock.Drilling fluid generally includes base slurry (such as bentonite slurry) and additive, and additive is mainly used in the performance improving and regulate drilling fluid, such as weighting agent, inhibitor, coating agent, fluid loss agent, lubricant, plugging agent etc.
In drilling process, the stability of the borehole wall is disperseed by stratum clay mineral usually, expand, shrink, the impact of the factor such as to cave in.Because the stability of the borehole wall directly affects drilling speed, and the height of drilling speed directly affects drilling cost, and the stability therefore maintaining the borehole wall improves one of drilling speed, the principal element reducing drilling cost.Because drilling fluid directly contacts with clay mineral when drilling well, the performance of drilling fluid will have an impact to clay mineral, particularly the electro kinetic potential of drilling fluid can impact the electro kinetic potential of clay mineral, thus causes the dispersion of clay mineral, expansion, shrinks, caves in.In addition, because the composition, temperature, pressure etc. of each layer in stratum are all not identical, thus the electro kinetic potential that result in each layer in stratum is not identical yet, which increases the difficulty maintaining borehole wall stability.
Existing drilling fluid electro kinetic potential value low (usually at-60mV ~-30mV), cation concn is low, and the electro kinetic potential that cannot realize each layer with stratum matches, and thus stabilising effect is not good; In addition, this drilling fluid salt resistance is poor, cannot adapt to salt deposit drilling well demand.
Summary of the invention
The invention provides a kind of drilling fluid additive, drilling fluid and boring method, low for the drilling fluid electro kinetic potential value solving prior art, cation concn is low, cannot realize the technological deficiencies such as the electro kinetic potential of each layer with stratum matches, stabilising effect is not good, salt resistance is poor.
The invention provides a kind of drilling fluid additive, following component is comprised: positively charged ion inhibitor C PI5 ~ 15 part according to weight proportion, positively charged ion coating agent CPH-24 ~ 8 part, cationic fluid loss agent CPF-15 ~ 10 part, cationic fluid loss agent CPF1 ~ 3 part, cationic plugging agent CPA1 ~ 2 part.
Further, drilling fluid additive provided by the invention comprises following component according to weight proportion: positively charged ion inhibitor C PI6 ~ 10 part, positively charged ion coating agent CPH-26 ~ 8 part, cationic fluid loss agent CPF-15 ~ 10 part, cationic fluid loss agent CPF2 ~ 3 part, cationic plugging agent CPA1 ~ 2 part.
Further, described drilling fluid additive also comprises positively charged ion coating agent CPH-14 ~ 8 part.CPH-1 has good high temperature resistant property, can be applicable to hot environment (such as 180 DEG C).
Each component in drilling fluid additive of the present invention all can purchased from Xinjiang Zhong Huan Phaeton Petroleum Technology Co., Ltd.Positively charged ion inhibitor C PI is small cation, its viscosity break ratio >60%; Positively charged ion coating agent CPH-2 and CPH-1 is macrocation, and wherein the molecular weight ranges of CPH-2 is 500 ~ 6,000,000, and the molecular weight ranges of such as about 5,500,000, CPH-1 is 45 ~ 550,000, and such as about 500,000; Cationic fluid loss agent CPF-1 and CPF is cation brown coal, the middle pressure dehydration≤15ml of the wherein High Temperature High Pressure dehydration≤36ml, CPF of CPF-1; Cationic plugging agent CPA is positively charged ion petroleum pitch, its order number <120 order.
The present invention also provides a kind of drilling fluid, and comprise wilkinite slurry and above-mentioned arbitrary described drilling fluid additive, the mass volume ratio of described drilling fluid additive and described drilling fluid is (1 ~ 5): 100; That is, the described drilling fluid additive containing 1 ~ 5kg in the described drilling fluid of 100L.
Further, described wilkinite slurry comprises wilkinite and water, and the mass volume ratio of described wilkinite and described wilkinite slurry is (3 ~ 4): 100, and the pH value of described drilling fluid is 9 ~ 10.
Further, described drilling fluid can also comprise other additive according to the actual requirements, such as lubricant, salt etc.
The present invention also provides a kind of boring method, uses the first drilling fluid be mixed to form by wilkinite slurry and the first additive at the drilling well initial stage; The second drilling fluid be mixed to form by wilkinite slurry and Second addition is used after entering stratum, middle part; The 3rd drilling fluid be mixed to form by wilkinite slurry and above-mentioned arbitrary described drilling fluid additive is used after entering understratum.
Further, described first additive comprises positively charged ion inhibitor C PI and positively charged ion coating agent CPH-2, the mass volume ratio of described positively charged ion inhibitor C PI and described first drilling fluid is (0.2 ~ 0.4): 100, and the mass volume ratio of described positively charged ion coating agent CPH-2 and described first drilling fluid is (0.4 ~ 0.8): 100.
Further, described Second addition comprises positively charged ion inhibitor C PI, positively charged ion coating agent CPH-2 and cationic fluid loss agent CPF-1, the mass volume ratio of described positively charged ion inhibitor C PI and described second drilling fluid is (0.6 ~ 1): 100, the mass volume ratio of described positively charged ion coating agent CPH-2 and described second drilling fluid is (0.8 ~ 1): 100, the mass volume ratio (0.5 ~ 1) of described cationic fluid loss agent CPF-1 and described second drilling fluid: 100.
Further, the pH value controlling described second drilling fluid and described 3rd drilling fluid is 9 ~ 10.
Further, the mass volume ratio of described drilling fluid additive and described 3rd drilling fluid is (1 ~ 5): 100.
Enforcement of the present invention, at least has following advantage:
1, drilling fluid additive composition provided by the invention is simple, formula is reasonable, its each component synergy, and bentonitic dispersion in both having inhibit base to starch, does not affect the performance of each component effect simultaneously; Drilling fluid containing this drilling fluid additive not only meets general performance requriements, and has higher electro kinetic potential and cation concn, and it also has the good performance such as anti-salt, high temperature resistance, anti-gypsum in addition.
2, easy to use, the environmental protection of drilling fluid provided by the invention, particularly can adapt to each layer status in stratum by carrying out adjustment to its composition and match with each layer electro kinetic potential, thus the electro kinetic potential of each layer clay mineral is not changed when drilling well, therefore good to the stabilising effect of the borehole wall, higher drilling speed can be realized; This drilling fluid suitability is strong, is applicable to fresh water, multiple situation such as (saturated) salt solution, high calcium etc.
3, boring method provided by the invention is simple to operate, controllability is strong, it adds different drilling fluid in each stage of drilling well by mixing bentonite slurry and additive formation glue for formation characteristics, more be easy to regulate, thus can safeguard the stablizing of stratum, the complexcase decreased in drilling process better, improve drilling efficiency, be specially adapted to the middle-high density balance stratum of salt deposit.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with embodiments of the invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The additive that various embodiments of the present invention adopt is all purchased from Xinjiang Zhong Huan Phaeton Petroleum Technology Co., Ltd.
Embodiment 1
1, bentonite slurry
To water (Cl with slurry
-content <6000mg/l) in add a small amount of NaOH and calcium remover CPN, its pH is made to be 9 ~ 10, add the bentonitic ratio of 90kg in every cubic meter of water (1000L) and add drilling fluid wilkinite, stir, circulate aging rear stand-by.
2, drilling fluid additive
First additive, comprises positively charged ion inhibitor C PI3 part and positively charged ion coating agent CPH-26 part according to weight proportion;
Second addition, comprises positively charged ion inhibitor C PI8 part, positively charged ion coating agent CPH-29 part and cationic fluid loss agent CPF-18 part according to weight proportion;
3rd additive (i.e. drilling fluid additive), following component is comprised: positively charged ion inhibitor C PI10 part, positively charged ion coating agent CPH-26 part, cationic fluid loss agent CPF-18 part according to weight proportion, cationic fluid loss agent CPF2 part, cationic plugging agent CPA1.5 part.
Embodiment 2
1, bentonite slurry
In water with slurry, add a small amount of NaOH and calcium remover CPN, make its pH be 9 ~ 10, add the bentonitic ratio of 100kg in every cubic meter of water and add drilling fluid wilkinite, stir, circulate aging rear stand-by.
2, drilling fluid additive
First additive, comprises positively charged ion inhibitor C PI2 part and positively charged ion coating agent CPH-28 part according to weight proportion;
Second addition, comprises positively charged ion inhibitor C PI6 part, positively charged ion coating agent CPH-210 part and cationic fluid loss agent CPF-110 part according to weight proportion;
3rd additive, comprises following component according to weight proportion: positively charged ion inhibitor C PI6 part, positively charged ion coating agent CPH-28 part, cationic fluid loss agent CPF-110 part, cationic fluid loss agent CPF3 part, cationic plugging agent CPA2 part.
Embodiment 3
1, bentonite slurry
In water with slurry, add a small amount of NaOH and calcium remover CPN, make its pH be 9 ~ 10, add the bentonitic ratio of 80kg in every cubic meter of water and add drilling fluid wilkinite, stir, circulate aging rear stand-by.
2, drilling fluid additive
First additive, comprises positively charged ion inhibitor C PI4 part and positively charged ion coating agent CPH-24 part according to weight proportion;
Second addition, comprises positively charged ion inhibitor C PI10 part, positively charged ion coating agent CPH-28 part and cationic fluid loss agent CPF-16 part according to weight proportion;
3rd additive, comprises following component according to weight proportion: positively charged ion inhibitor C PI15 part, positively charged ion coating agent CPH-24 part, positively charged ion coating agent CPH-14 part, cationic fluid loss agent CPF-15 part, cationic fluid loss agent CPF1 part, cationic plugging agent CPA1 part.
Embodiment 4
Adopt the bentonite slurry of above-described embodiment 1 to 3 and drilling fluid additive to carry out wellbore test to salt deposit respectively, the salt density of this salt deposit reaches as high as 2.3g/cm
3left and right.
Before adopting the bentonite slurry of each embodiment and drilling fluid additive to carry out wellbore test, first the bentonite slurry after aging for each embodiment is diluted with water to about the volume ratio 3:100 of the bentonite slurry in slurries after bentonitic quality and dilution, regulate pH to be added in circulation tank after 9 ~ 10, under agitation recycle; Simultaneously, in glue tank, successively the first of this embodiment to the 3rd drilling fluid additive is made glue respectively, during preparation glue, in every cubic meter of water, add each component in drilling fluid additive while stirring according to above-mentioned weight part (1 part is 1kg), the pH regulating glue is 9 ~ 10, and can add lubricant (such as about 10kg) in right amount to reduce friction, and add sodium-chlor in right amount, to make Cl when the 3rd drilling fluid additive preparation
-concentration and stratum match.During test, by used in combination for the glue in the bentonite slurry in circulation tank and glue tank, to regulate according to the composition of particular case to drilling fluid of each layer in stratum easily.
At the drilling well initial stage, the first drilling fluid adopting the glue by being made by the first additive slowly to join to be formed in the bentonite slurry of circulation carries out; After entering stratum, middle part, the second drilling fluid adopting the glue by being made by Second addition slowly to join to be formed in the bentonite slurry of circulation carries out; When arriving understratum, the 3rd drilling fluid adopting the glue by being made by the 3rd additive slowly to join to be formed in the bentonite slurry of circulation carries out; During drilling well, the mass volume ratio controlling additive and drilling fluid in each drilling fluid is (1 ~ 5): 100, and the properties of monitor fluid simultaneously, as degradation in use procedure, the consumption of the glue that adjustable is made up of each additive, meets the requirements to keep parameters.
The bentonite slurry of each embodiment and drilling fluid additive is adopted not only effectively to inhibit the hydration swelling of well section top clay, maintain the stability of well section middle and lower part simultaneously, whole drilling process has no that stratum clay mineral disperses, expands, shrinks, the bad phenomenon such as to cave in, drilling well is smooth, and average drilling speed during drilling well reaches 8.3m/h, the average drilling speed of relatively conventional salt deposit drilling well improves about 15%.
In addition, in drilling process, adopt the performance of ordinary method to drilling fluid to test, the results are shown in Table 1.
The performance (well depth 4576 meters) of each drilling fluid of table 1
As seen from the results in Table 1:
The properties of the drilling fluid formed by bentonite slurry and the drilling fluid additive of each embodiment all meets the performance requriements of conventional drilling liquid, and each drilling fluid all has higher electro kinetic potential and cation concn, particularly its salt resistance is good, can adapt to the drilling well demand of high-density salt deposit preferably.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a drilling fluid additive, it is characterized in that, following component is comprised: positively charged ion inhibitor C PI5 ~ 15 part according to weight proportion, positively charged ion coating agent CPH-24 ~ 8 part, cationic fluid loss agent CPF-15 ~ 10 part, cationic fluid loss agent CPF1 ~ 3 part, cationic plugging agent CPA1 ~ 2 part.
2. drilling fluid additive according to claim 1, it is characterized in that, following component is comprised: positively charged ion inhibitor C PI6 ~ 10 part according to weight proportion, positively charged ion coating agent CPH-26 ~ 8 part, cationic fluid loss agent CPF-15 ~ 10 part, cationic fluid loss agent CPF2 ~ 3 part, cationic plugging agent CPA1 ~ 2 part.
3. drilling fluid additive according to claim 1, is characterized in that, also comprises positively charged ion coating agent CPH-14 ~ 8 part.
4. a drilling fluid, is characterized in that, comprise wilkinite slurry and the arbitrary described drilling fluid additive of claims 1 to 3, the mass volume ratio of described drilling fluid additive and described drilling fluid is (1 ~ 5): 100.
5. drilling fluid according to claim 4, is characterized in that, described wilkinite slurry comprises wilkinite and water, and the mass volume ratio of described wilkinite and described wilkinite slurry is (3 ~ 4): 100, and the pH value of described drilling fluid is 9 ~ 10.
6. a boring method, is characterized in that, uses the first drilling fluid be mixed to form by wilkinite slurry and the first additive at the drilling well initial stage; The second drilling fluid be mixed to form by wilkinite slurry and Second addition is used after entering stratum, middle part; The 3rd drilling fluid be mixed to form by wilkinite slurry and the arbitrary described drilling fluid additive of claims 1 to 3 is used after entering understratum.
7. boring method according to claim 6, it is characterized in that, described first additive comprises positively charged ion inhibitor C PI and positively charged ion coating agent CPH-2, the mass volume ratio of described positively charged ion inhibitor C PI and described first drilling fluid is (0.2 ~ 0.4): 100, and the mass volume ratio of described positively charged ion coating agent CPH-2 and described first drilling fluid is (0.4 ~ 0.8): 100.
8. boring method according to claim 6, it is characterized in that, described Second addition comprises positively charged ion inhibitor C PI, positively charged ion coating agent CPH-2 and cationic fluid loss agent CPF-1, the mass volume ratio of described positively charged ion inhibitor C PI and described second drilling fluid is (0.6 ~ 1): 100, the mass volume ratio of described positively charged ion coating agent CPH-2 and described second drilling fluid is (0.8 ~ 1): 100, the mass volume ratio (0.5 ~ 1) of described cationic fluid loss agent CPF-1 and described second drilling fluid: 100.
9. boring method according to claim 8, is characterized in that, the pH value controlling described second drilling fluid and described 3rd drilling fluid is 9 ~ 10.
10. boring method according to claim 6, is characterized in that, the mass volume ratio of described drilling fluid additive and described 3rd drilling fluid is (1 ~ 5): 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410587009.7A CN105542730B (en) | 2014-10-28 | 2014-10-28 | Drilling fluid additive, drilling fluid and drilling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410587009.7A CN105542730B (en) | 2014-10-28 | 2014-10-28 | Drilling fluid additive, drilling fluid and drilling method |
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| Publication Number | Publication Date |
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| CN105542730A true CN105542730A (en) | 2016-05-04 |
| CN105542730B CN105542730B (en) | 2018-05-08 |
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ID=55822302
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647492A (en) * | 2014-11-12 | 2016-06-08 | 中国石油天然气股份有限公司 | Full-cation drilling fluid |
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| CN1618922A (en) * | 2002-11-21 | 2005-05-25 | 中国石油化工股份有限公司 | Positive electricity production well treatment liquid and its preparation method |
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2014
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|---|---|---|---|---|
| US4765415A (en) * | 1987-01-15 | 1988-08-23 | The United States Of America As Represented By The Secretary Of Interior | Isoelectric drilling method |
| US4959164A (en) * | 1988-06-27 | 1990-09-25 | The United States Of America As Represented By The Secretary Of The Interior | Rock fragmentation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105647492A (en) * | 2014-11-12 | 2016-06-08 | 中国石油天然气股份有限公司 | Full-cation drilling fluid |
| CN105647492B (en) * | 2014-11-12 | 2018-10-16 | 中国石油天然气股份有限公司 | Full-cation drilling fluid |
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| Publication number | Publication date |
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| CN105542730B (en) | 2018-05-08 |
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