CA1063336A - Drilling of subterranean formations with drilling fluids containing radiation induced fluid loss agents - Google Patents
Drilling of subterranean formations with drilling fluids containing radiation induced fluid loss agentsInfo
- Publication number
- CA1063336A CA1063336A CA243,675A CA243675A CA1063336A CA 1063336 A CA1063336 A CA 1063336A CA 243675 A CA243675 A CA 243675A CA 1063336 A CA1063336 A CA 1063336A
- Authority
- CA
- Canada
- Prior art keywords
- drilling
- polymer
- rads
- radiation
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 63
- 239000012530 fluid Substances 0.000 title claims abstract description 48
- 230000005855 radiation Effects 0.000 title claims abstract description 47
- 230000015572 biosynthetic process Effects 0.000 title claims description 16
- 238000005755 formation reaction Methods 0.000 title description 10
- 229920000642 polymer Polymers 0.000 claims abstract description 115
- 239000000178 monomer Substances 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 22
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229940047670 sodium acrylate Drugs 0.000 claims abstract description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 10
- -1 alkali metal salts Chemical class 0.000 claims abstract description 10
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 10
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 6
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 32
- 239000000243 solution Substances 0.000 claims description 17
- 229920001577 copolymer Polymers 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000004927 clay Substances 0.000 claims description 9
- 229940048053 acrylate Drugs 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 229940117913 acrylamide Drugs 0.000 claims 8
- 239000012736 aqueous medium Substances 0.000 claims 6
- 239000006185 dispersion Substances 0.000 claims 1
- 230000000379 polymerizing effect Effects 0.000 claims 1
- SONHXMAHPHADTF-UHFFFAOYSA-M sodium;2-methylprop-2-enoate Chemical compound [Na+].CC(=C)C([O-])=O SONHXMAHPHADTF-UHFFFAOYSA-M 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000035699 permeability Effects 0.000 description 9
- 239000000440 bentonite Substances 0.000 description 7
- 235000012216 bentonite Nutrition 0.000 description 7
- 229940092782 bentonite Drugs 0.000 description 7
- 229910000278 bentonite Inorganic materials 0.000 description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- 239000012986 chain transfer agent Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000011435 rock Substances 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 239000000654 additive Substances 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229920000058 polyacrylate Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 235000010356 sorbitol Nutrition 0.000 description 3
- FBEHFRAORPEGFH-UHFFFAOYSA-N Allyxycarb Chemical compound CNC(=O)OC1=CC(C)=C(N(CC=C)CC=C)C(C)=C1 FBEHFRAORPEGFH-UHFFFAOYSA-N 0.000 description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- PYRZPBDTPRQYKG-UHFFFAOYSA-N cyclopentene-1-carboxylic acid Chemical compound OC(=O)C1=CCCC1 PYRZPBDTPRQYKG-UHFFFAOYSA-N 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 159000000011 group IA salts Chemical class 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000001457 metallic cations Chemical class 0.000 description 2
- 239000004530 micro-emulsion Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 2
- 239000000600 sorbitol Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 1
- 229920008712 Copo Polymers 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 101100411639 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) mus-41 gene Proteins 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 108010011935 Poly 18 antigen Proteins 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 235000017343 Quebracho blanco Nutrition 0.000 description 1
- 101150081777 RAD5 gene Proteins 0.000 description 1
- 101100389746 Rattus norvegicus Esr1 gene Proteins 0.000 description 1
- 241000065615 Schinopsis balansae Species 0.000 description 1
- 101100411620 Schizosaccharomyces pombe (strain 972 / ATCC 24843) rad15 gene Proteins 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 102100035115 Testin Human genes 0.000 description 1
- 101710070533 Testin Proteins 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- VREFGVBLTWBCJP-UHFFFAOYSA-N alprazolam Chemical compound C12=CC(Cl)=CC=C2N2C(C)=NN=C2CN=C1C1=CC=CC=C1 VREFGVBLTWBCJP-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- TVHALOSDPLTTSR-UHFFFAOYSA-H hexasodium;[oxido-[oxido(phosphonatooxy)phosphoryl]oxyphosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O TVHALOSDPLTTSR-UHFFFAOYSA-H 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical class CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Classifications
-
- 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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Earth Drilling (AREA)
- Polymerisation Methods In General (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54214575A | 1975-01-20 | 1975-01-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1063336A true CA1063336A (en) | 1979-10-02 |
Family
ID=24162532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA243,675A Expired CA1063336A (en) | 1975-01-20 | 1976-01-16 | Drilling of subterranean formations with drilling fluids containing radiation induced fluid loss agents |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1063336A (enrdf_load_html_response) |
| GB (1) | GB1514057A (enrdf_load_html_response) |
| MX (1) | MX4220E (enrdf_load_html_response) |
| NL (1) | NL167461C (enrdf_load_html_response) |
| NO (1) | NO146502C (enrdf_load_html_response) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4600515A (en) * | 1984-09-12 | 1986-07-15 | National Starch And Chemical Corporation | Fluid loss control agents for drilling fluids containing divalent cations |
| RU2104292C1 (ru) * | 1995-01-13 | 1998-02-10 | Акционерное общество закрытого типа научно-производственное предприятие "Хемекс Дор" | Термосолестойкий буровой раствор |
| RU2169754C1 (ru) * | 2000-10-10 | 2001-06-27 | Государственное научно-производственное предприятие "Азимут" | Способ получения акрилового реагента гивпан |
| US9890319B2 (en) | 2009-11-18 | 2018-02-13 | Halliburton Energy Services, Inc. | Compositions and systems for combatting lost circulation and methods of using the same |
| CN104357030B (zh) * | 2014-06-04 | 2019-02-22 | 中国石油化工集团公司 | 一种钻井液用支化聚合物处理剂及其制备方法 |
| CN111978937B (zh) * | 2020-08-14 | 2023-03-14 | 中国石油天然气集团有限公司 | 钻井液用抗温可变形聚合物类降滤失剂及其制备方法 |
| CN116589632B (zh) * | 2023-03-13 | 2024-04-12 | 中国石油大学(华东) | 一种水基钻井液用抗高温低粘超支化固壁剂及其制备方法与应用 |
-
1976
- 1976-01-16 MX MX765167U patent/MX4220E/es unknown
- 1976-01-16 CA CA243,675A patent/CA1063336A/en not_active Expired
- 1976-01-19 NO NO760161A patent/NO146502C/no unknown
- 1976-01-20 GB GB2184/76A patent/GB1514057A/en not_active Expired
- 1976-04-05 NL NL7603537.A patent/NL167461C/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NL167461B (nl) | 1981-07-16 |
| NO760161L (enrdf_load_html_response) | 1976-07-21 |
| GB1514057A (en) | 1978-06-14 |
| NO146502B (no) | 1982-07-05 |
| MX4220E (es) | 1982-02-16 |
| NL167461C (nl) | 1981-12-16 |
| NO146502C (no) | 1982-10-13 |
| NL7603537A (nl) | 1977-10-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0191980B1 (en) | Polymers for use as filtration control aids in drilling muds | |
| US4521578A (en) | Composition and method of preparation of novel aqueous drilling fluid additives | |
| US3081260A (en) | Low solids drilling fluid | |
| US3841402A (en) | Fracturing with radiation-induced polymers | |
| US4644020A (en) | Production of high molecular weight vinyl lactam polymers and copolymers | |
| US4726906A (en) | Polymers for use as filtration control aids in drilling muds | |
| US4455240A (en) | Ampholytic polymers for use as filtration control aids in drilling muds | |
| US3877522A (en) | Use of radiation-induced polymers in cement slurries | |
| US5186257A (en) | Polymers useful in the recovery and processing of natural resources | |
| EP0491686B1 (en) | Polymers for use in drilling | |
| US4951921A (en) | Polymers useful in the recovery and processing of natural resources | |
| US6030928A (en) | Polymers useful in the recovery and processing of natural resources | |
| US3243000A (en) | Method and composition for drilling wells and similar boreholes | |
| US3937633A (en) | Use of radiation-induced polymers in cement slurries | |
| EP0156030B1 (en) | Aqueous drilling fluid | |
| US4921621A (en) | Hydrolyzed co-polymers of N-vinylamide and acrylamide for use as waterloss control additives in drilling mud | |
| US5134118A (en) | Aqueous based drilling fluid | |
| US4540496A (en) | Intramolecular polymer complexes - viscosifiers for high ionic strength drilling fluids | |
| US4363736A (en) | Fluid loss control system | |
| US4473480A (en) | High temperature stable fluid loss control system | |
| DE60038168T2 (de) | Quaternäre stickstoff-enthaltende amphoterische wasserlösliche polymere und anwendungen für bohrflüssigkeiten | |
| US4474667A (en) | Fluid loss control system | |
| US3070543A (en) | Low solids drilling fluid | |
| US4257903A (en) | Drilling fluid containing crosslinked polysaccharide derivative | |
| US3956141A (en) | Additive for reducing fluid loss or filtration rate for aqueous drilling fluid containing both high salinity and high soluble calcium |