WO2009018536A2 - Methods of increasing fracture resistance in low permeability formations - Google Patents
Methods of increasing fracture resistance in low permeability formations Download PDFInfo
- Publication number
- WO2009018536A2 WO2009018536A2 PCT/US2008/071978 US2008071978W WO2009018536A2 WO 2009018536 A2 WO2009018536 A2 WO 2009018536A2 US 2008071978 W US2008071978 W US 2008071978W WO 2009018536 A2 WO2009018536 A2 WO 2009018536A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wellbore
- formation
- fractures
- fluid
- carrier fluid
- Prior art date
Links
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 137
- 238000000034 method Methods 0.000 title claims abstract description 64
- 230000001965 increasing effect Effects 0.000 title claims abstract description 49
- 230000035699 permeability Effects 0.000 title claims abstract description 44
- 238000005755 formation reaction Methods 0.000 title description 106
- 239000012530 fluid Substances 0.000 claims abstract description 184
- 239000000463 material Substances 0.000 claims abstract description 64
- 238000005728 strengthening Methods 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims description 44
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 20
- 239000003566 sealing material Substances 0.000 claims description 16
- 239000000178 monomer Substances 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229920000768 polyamine Polymers 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 150000002118 epoxides Chemical class 0.000 claims description 5
- 239000003431 cross linking reagent Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 3
- 235000010980 cellulose Nutrition 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 206010017076 Fracture Diseases 0.000 claims 39
- 208000010392 Bone Fractures Diseases 0.000 claims 15
- 208000002565 Open Fractures Diseases 0.000 claims 2
- 239000000499 gel Substances 0.000 description 45
- 239000006187 pill Substances 0.000 description 30
- 238000012360 testing method Methods 0.000 description 27
- 239000003921 oil Substances 0.000 description 23
- 235000019198 oils Nutrition 0.000 description 23
- 239000000523 sample Substances 0.000 description 16
- -1 crosslinkant Substances 0.000 description 15
- 239000000203 mixture Substances 0.000 description 15
- 229920005989 resin Polymers 0.000 description 14
- 239000011347 resin Substances 0.000 description 14
- 239000004568 cement Substances 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 12
- 239000013535 sea water Substances 0.000 description 11
- 239000000839 emulsion Substances 0.000 description 10
- 239000012267 brine Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 9
- 150000001412 amines Chemical class 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 239000011148 porous material Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000002585 base Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000001723 curing Methods 0.000 description 6
- 238000009472 formulation Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 230000004083 survival effect Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000013459 approach Methods 0.000 description 5
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 229920005615 natural polymer Polymers 0.000 description 5
- 239000010454 slate Substances 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 150000007942 carboxylates Chemical class 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000007306 functionalization reaction Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 239000011236 particulate material Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 150000003573 thiols Chemical class 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 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 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 2
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910001622 calcium bromide Inorganic materials 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000013626 chemical specie Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000004579 marble Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 238000013008 moisture curing Methods 0.000 description 2
- 239000012038 nucleophile Substances 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 229920001864 tannin Polymers 0.000 description 2
- 239000001648 tannin Substances 0.000 description 2
- 235000018553 tannin Nutrition 0.000 description 2
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- GGQQNYXPYWCUHG-RMTFUQJTSA-N (3e,6e)-deca-3,6-diene Chemical compound CCC\C=C\C\C=C\CC GGQQNYXPYWCUHG-RMTFUQJTSA-N 0.000 description 1
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 description 1
- HDPLHDGYGLENEI-UHFFFAOYSA-N 2-[1-(oxiran-2-ylmethoxy)propan-2-yloxymethyl]oxirane Chemical compound C1OC1COC(C)COCC1CO1 HDPLHDGYGLENEI-UHFFFAOYSA-N 0.000 description 1
- SHKUUQIDMUMQQK-UHFFFAOYSA-N 2-[4-(oxiran-2-ylmethoxy)butoxymethyl]oxirane Chemical compound C1OC1COCCCCOCC1CO1 SHKUUQIDMUMQQK-UHFFFAOYSA-N 0.000 description 1
- 235000019489 Almond oil Nutrition 0.000 description 1
- 244000226021 Anacardium occidentale Species 0.000 description 1
- 235000019490 Beech nut oil Nutrition 0.000 description 1
- 241000273930 Brevoortia tyrannus Species 0.000 description 1
- 235000003301 Ceiba pentandra Nutrition 0.000 description 1
- 244000146553 Ceiba pentandra Species 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- 241000252203 Clupea harengus Species 0.000 description 1
- 102100028717 Cytosolic 5'-nucleotidase 3A Human genes 0.000 description 1
- 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 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- ZNZYKNKBJPZETN-WELNAUFTSA-N Dialdehyde 11678 Chemical compound N1C2=CC=CC=C2C2=C1[C@H](C[C@H](/C(=C/O)C(=O)OC)[C@@H](C=C)C=O)NCC2 ZNZYKNKBJPZETN-WELNAUFTSA-N 0.000 description 1
- 241000221079 Euphorbia <genus> Species 0.000 description 1
- 235000019487 Hazelnut oil Nutrition 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 241000219745 Lupinus Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 240000007817 Olea europaea Species 0.000 description 1
- 101150025786 PCLO gene Proteins 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 235000008753 Papaver somniferum Nutrition 0.000 description 1
- 240000001090 Papaver somniferum Species 0.000 description 1
- 235000019483 Peanut oil Nutrition 0.000 description 1
- 235000004347 Perilla Nutrition 0.000 description 1
- 244000124853 Perilla frutescens Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 241001125046 Sardina pilchardus Species 0.000 description 1
- 244000166071 Shorea robusta Species 0.000 description 1
- 235000015076 Shorea robusta Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 239000008168 almond oil Substances 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 150000001541 aziridines Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Chemical class [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 150000004675 formic acid derivatives Chemical class 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000008169 grapeseed oil Substances 0.000 description 1
- 239000010468 hazelnut oil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010460 hemp oil Substances 0.000 description 1
- 235000019514 herring Nutrition 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000012625 in-situ measurement Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000011016 integrity testing Methods 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical group OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000010486 lallemantia oil Substances 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000162 poly(ureaurethane) Polymers 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000001944 prunus armeniaca kernel oil Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 235000005713 safflower oil Nutrition 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 235000019512 sardine Nutrition 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 229920002258 tannic acid Polymers 0.000 description 1
- 235000015523 tannic acid Nutrition 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000012749 thinning agent Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000010698 whale oil Substances 0.000 description 1
- 229940102001 zinc bromide Drugs 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
Definitions
- Embodiments disclosed herein relate generally to methods of increasing the fracture resistance of low permeability formations.
- fluids are typically used in the well for a variety of functions.
- the fluids may be circulated through a drill pipe and drill bit into the wellbore, and then may subsequently flow upward through wellbore to the surface.
- Common uses for well fluids include: lubrication and cooling of drill bit cutting surfaces while drilling generally or drilling-in (i.e., drilling in a targeted petroliferous formation), transportation of "cuttings" (pieces of formation dislodged by the cutting action of the teeth on a drill bit) to the surface, controlling formation fluid pressure to prevent blowouts, maintaining well stability, suspending solids in the well, minimizing fluid loss into and stabilizing the formation through which the well is being drilled, fracturing the formation in the vicinity of the well, displacing the fluid within the well with another fluid, cleaning the well, testing the well, transmitting hydraulic horsepower to the drill bit, fluid used for emplacing a packer, abandoning the well or preparing the well for abandonment, and otherwise treating the well or the formation.
- Wellbore fluids may also be used to provide sufficient hydrostatic pressure in the well to prevent the influx and efflux of formation fluids and wellbore fluids, respectively.
- the pore pressure the pressure in the formation pore space provided by the formation fluids
- the formation fluids tend to flow from the formation into the open wellbore. Therefore, the pressure in the open wellbore is typically maintained at a higher pressure than the pore pressure. While it is highly advantageous to maintain the wellbore pressures above the pore pressure, on the other hand, if the pressure exerted by the wellbore fluids exceeds the fracture resistance of the formation, a formation fracture and thus induced mud losses may occur.
- the loss of wellbore fluid may cause the hydrostatic pressure in the wellbore to decrease, which may in turn also allow formation fluids to enter the wellbore.
- the formation fracture pressure typically defines an upper limit for allowable wellbore pressure in an open wellbore while the pore pressure defines a lower limit. Therefore, a major constraint on well design and selection of drilling fluids is the balance between varying pore pressures and formation fracture pressures or fracture gradients though the depth of the well.
- wellbore strengthening techniques ranging from use of cements, resins, casing drilling, and managed pressure drilling, etc, have seen recent increases in application and further development.
- wellbore strengthening techniques have been used in hopes of increasing the fracture resistance of weaker formations, which may allow for more efficient and economic drilling.
- embodiments disclosed herein relate to a method of increasing the fracture resistance of a low permeability formation that includes emplacing a wellbore fluid in a wellbore through the low permeability formation, the wellbore fluid comprising: a settable carrier fluid; and a solid particulate bridging material; increasing the pressure in the wellbore such that fractures are formed in the formation; allowing the settable carrier fluid to enter the fractures; bridging and sealing the mouths of the fractures to form a substantially impermeable bridge proximate to the mouth of the fractures thereby strengthening the formation; and holding the increased pressure for an amount of time sufficient for setting of the carrier fluid in the fractures.
- embodiments disclosed herein relate to a method of drilling a wellbore through a low permeability formation that includes drilling the wellbore while circulating a first wellbore fluid into the wellbore; emplacing a wellbore fluid in a wellbore through the low permeability formation, the wellbore fluid comprising: a settable carrier fluid; and a solid particulate bridging material; increasing the pressure in the wellbore such that fractures are formed in the formation; allowing the settable carrier fluid to enter the fractures; bridging and sealing the mouths of the fractures to form a substantially impermeable bridge proximate the mouth of the fractures thereby strengthening the formation; and holding the increased pressure for an amount of time sufficient for setting of the carrier fluid in the fractures.
- embodiments disclosed herein relate to a method of increasing the fracture resistance of a low permeability formation that includes emplacing a wellbore fluid in a wellbore through the low permeability formation, the wellbore fluid comprising: a settable carrier fluid comprising an oleaginous base fluid, an epoxidized natural oil, and at least one crosslinking agent; a solid particulate bridging material; and a bridge sealing material; increasing the pressure in the wellbore to above an initial or re-opening fracture pressure of the formation such that fractures are induced in the formation; allowing the settable carrier fluid to enter the fractures, the solid particulate bridging material to prop open the fractures, and the bridge sealing material to form a substantially fluid impermeable bridge proximate the mouths of the fractures, thereby strengthening the formation and preventing the fractures from further growth in length; and holding the increased pressure for an amount of time sufficient for setting of the carrier fluid in the fractures.
- embodiments disclosed herein relate to a method of increasing the fracture resistance of a low permeability formation that includes emplacing a wellbore fluid in a wellbore through the low permeability formation, the wellbore fluid comprising: a settable carrier fluid comprising water and a cementious material; a solid particulate bridging material; and a bridge sealing material; increasing the pressure in the wellbore to above an initial or re-opening fracture pressure of the formation such that fractures are induced in the formation; allowing the settable carrier fluid to enter the fractures, the solid particulate bridging material to prop open the fractures, and the bridge sealing material to form a substantially fluid impermeable bridge proximate the mouths of the fractures, thereby strengthening the formation and preventing the fractures from further growth in length; and holding the increased pressure for an amount of time sufficient for setting of the carrier fluid in the fractures.
- FIGS. IA and IB show schematics of stress cages in high and low permeability formations, respectively.
- FIG 2. shows a graphical representation of the effect of temperature on curing of a settable fluid of the present disclosure.
- FIG. 3 shows a graphical representation of the effect of pressure on curing of a settable fluid of the present disclosure.
- FIG. 4 shows a graphical representation of the effect of time and temperature on compressive strength of a settable fluid of the present disclosure.
- FIG. 5 shows a graphical representation of an extended leak-off test in a shale formation.
- FIGS. 6-9 show graphical representations of formation integrity tests following formation of a stress cage in accordance with one embodiment of the present disclosure.
- embodiments disclosed herein relate to methods of increasing the fracture resistance of a wellbore wall during drilling operations through a low permeability formation.
- low permeability formation refers to a formation possessing a permeability of less than 1 mD.
- stress cage refers to a wellbore strengthening approach of increasing the hoop stress around the wellbore by propping open or bridging and sealing shallow fractures at the wellbore/formation interface, isolating the fluid pressure in the wellbore from a majority of the fracture.
- FIGS. IA and IB schematics of wellbores through high and low permeability formations, respectively, are shown in accordance with the postulated stress cage model.
- a wellbore fluid (not shown separately) containing particulate matter (including bridging materials) is circulated in a wellbore 102, inducing fractures 104 in the walls 106 of wellbore 102.
- a bridge 108 of bridging materials 108a forms in the mouths of fractures 104 to hold fractures 104 open. By holding fractures 104 open with bridge 108, the adjacent rock may be put into compression and an increase in the hoop stress 110 may be observed.
- FIG IA which demonstrates a stress cage in a high permeability formation such as sands
- the fluid 112 that passes through bridging materials 108a may leak away 114 into the formation matrix 116.
- no or little pressure build up within the fracture 104 may be expected, and the fracture 104 does not propagate. Further, nor does fluid trapped behind the bridge attempt to flow back into the well when wellbore pressures decrease.
- FIG. IB which demonstrates a stress cage in a low permeability formation such as shale
- fluid 112 within fracture 104 is not expected to leak away into formation matrix 126 due to the low permeability of formation 126.
- the bridge 108 should possess an extremely low permeability to prevent additional fluid build-up in fracture 104 which would increase fracture propagation and destabilize the wellbore.
- the inventors of the present application have recognized that while a conventional stress cage treatment (with a greater concentration of bridging materials) may initially seal a fracture in a low permeability formation, the bridge may likely not be held strong enough to survive subsequent circulation of a fluid within the wellbore or temporary reductions in wellbore pressure resulting from normal drilling activities, and thus, have no long- term stress cage or strengthening effects.
- the inventors of the present application have advantageously discovered an approach by which to initially bridge and seal a fracture in a low permeability formation and to also retain such seal during subsequent downhole operations.
- strengthening of a wellbore through a low permeability formation may be achieved by using a wellbore fluid comprising bridging materials (or "stress cage solids" as frequently referred to in the art) carried by a settable or solidifiable carrier fluid to bridge fractures induced in a wellbore wall.
- a bridge sealing material may also be included in the wellbore for assisting in the sealing of the bridge.
- Such methods of treating and/or strengthening a wellbore may be applied in wellbore drilled with oil- or water-based fluids.
- a fluid of the present disclosure containing a settable carrier fluid and bridging materials may be introduced into the wellbore as a "pill" and may be squeezed into a low permeability formation at an increased pressure, in particular, at a pressure above the initial fracture pressure or re-open pressure of the formation.
- an increased pressure in particular, at a pressure above the initial fracture pressure or re-open pressure of the formation.
- fractures are induced (or reopened) in the wellbore wall, and the bridging particulate material contained within the pill may bridge and seal the induced fractures at or near the mouth thereof.
- the increased pressure may then be held while the pill sets, which may vary, as described below, depending on the type of settable fluid used.
- the drilling assembly may be run back in the hole and drilling of the wellbore may be continued using a conventional drilling mud.
- bridging materials used to bridge the fracture in accordance with the methods of the present disclosure include those types of materials that are conventionally used in stress caging of high permeability formations.
- bridging material that is carried by the carrier fluid to bridge the fractures may include at least one substantially crush resistant particulate solid such that the bridging material props open the fractures (cracks and fissures) that are induced in the wall of the wellbore.
- crush resistant refers to a bridging material is physically strong enough to withstand the closure stresses exerted on the fracture bridge.
- bridging materials suitable for use in the present disclosure include graphite, calcium carbonate (preferably, marble), dolomite (MgCO 3 -CaCO 3 ), celluloses, micas, proppant materials such as sands or ceramic particles and combinations thereof. Further, it is also envisaged that a portion of the bridging material may comprise drill cuttings having the desired average particle diameter in the range of 25 to 2000 microns.
- the concentration of the bridging material may vary depending, for example, on the type of fluid used, and the wellbore/formation in which the bridging materials are used. However, the concentration should be at least great enough for the bridging material to rapidly bridge the fractures (i.e. cracks and fissures) that are induced in the wall of the wellbore but should not be so high as to make placement of the fluid impractical.
- the concentration of bridging material in the drilling mud should such that the bridging material enters and bridges the fracture before the fracture grows to a length that stresses are no longer concentrated near the borehole. This length is optimally on the order of one-half the wellbore radius but may, in other embodiments, be longer or shorter.
- the concentration of bridging particles may be carried at an overly high concentration to ensure that appropriately sized particles do bridge and seal the fracture before the fracture grows in length well beyond the well.
- the concentration of bridging particles may be at least 5 pounds per barrel, at least 10 pounds per barrel, at least 15 pounds per barrel, and at least 30 pounds per barrel in various other embodiments.
- concentration of the bridging particulate material may be greater than 50 pounds per barrel in one embodiment, and greater than 80 pounds per barrel in another embodiment.
- the sizing of the bridging material may also be selected based size of the fractures predicted for a given formation.
- the bridging material has an average particle diameter in the range of 50 to 1500 microns, and from 250 to 1000 microns in another embodiment.
- the bridging material may comprise substantially spherical particles; however, it is also envisaged that the bridging material may comprise elongate particles, for example, rods or fibers.
- the average length of the elongate particles should be such that the elongate particles are capable of bridging the induced fractures at or near the mouth thereof.
- elongate particles may have an average length in the range 25 to 2000 microns, preferably 50 to 1500 microns, more preferably 250 to 1000 microns.
- the bridging material is sized so as to readily form a bridge at or near the mouth of the induced fractures.
- the fractures that are induced in the wellbore wall have a fracture width at the mouth in the range 0.1 to 5 mm.
- the fracture width may be dependent, amongst other factors, upon the strength (stiffness) of the formation rock and the extent to which the pressure in the wellbore is increased to above initial fracture pressure of the formation during the fracture induction (in other words, the fracture width is dependent on the pressure difference between the drilling mud and the initial fracture pressure of the formation during the fracture induction step).
- the bridging material preferably, a major portion of the bridging material has a particle diameter approaching the width of the fracture mouth.
- the bridging material may have a broad (polydisperse) particle size distribution; however, other distributions may alternatively be used.
- the bridge may also be sealed to prevent the loss of the bridge/material behind the bridge back into the wellbore.
- the bridging particles may be desirable to also include an optional bridge sealing material with the bridging material.
- a bridging material may possess both bridging and sealing characteristics, and thus, one additive may be both the bridging material and the bridge sealing material.
- the use of a broad particle size distribution (and in particular, inclusion of fine bridging particles) may also be sufficient to seal the bridge formed at the mouth of the fracture.
- a sealing material may be desirable in other embodiments to also include a sealing material to further increase the strength of the seal.
- Additives that may be useful in increasing the sealing efficiency of the bridge may include such materials that are frequently used in loss circulation or fluid loss control applications.
- bridge sealing materials may include fine and/or deformable particles, such as industrial carbon, graphite, cellulose fibers, asphalt, etc.
- this list is not exhaustive, and that other sealing materials as known in the art may alternatively be used.
- Carrier fluids suitable for use in the methods of the present disclosure include those that may set or solidify upon a period of time.
- settable fluid refers to any suitable liquid material which may be pumped or emplaced downhole, and will harden over time to form a solid or gelatinous structure and become more resistance to mechanical deformation.
- compositions that may be included in the carrier fluid to render it settable include cementious materials and chemical resin components.
- the settable carrier fluid may include a pre-crosslinked or pre-hardened chemical resin components.
- chemical resin components refers to resin precursors and/or a resin product.
- the components placed downhole must be in pumpable form, and may, upon a sufficient or predetermined amount of time, harden into a gelatinous or solidified structure.
- resins may be formed from a bi- or multi-component system having at least one monomer that may self-or co-polymerize through exposure to or reaction with a hardening agent which may include a curing agent, initiator, crosslinkant, catalyst, etc.
- Chemical mechanisms that may be used in the setting of the settable carrier fluids of the present disclosure may include, for example, reaction between epoxy functionalization with a heteroatom nucleophile, such as amines, alcohols, phenols, thiols, carbanions, and carboxylates.
- the epoxy functionalization may be present on either the monomer or the hardening agent.
- an epoxy-modified lipophilic monomer may be crosslinked with a crosslinkant that comprises a heteroatom nucleophile, such as an amine, alcohol, phenol, thiol, carbanion, and carboxylate.
- the breaker systems may also be used in other types of gels, for example, elastomer-type gels, such as polyurethanes and polyureas.
- elastomer-type gels such as polyurethanes and polyureas.
- Such gels are described, for example, in U.S. Patent Application Nos. 60/942,346 and 60/914,604, and PCT Application Nos. PCT/US08/61272 and PCT/US08/61300, which are assigned to the present assignee and herein incorporated by reference in their entirety.
- Polyureas and polyurethanes may be formed by the reaction of a blocked isocyanate with an active hydrogen compound, i.e., polyamine and polyol, respectively.
- Polyurethane gels may also include gels formed from silane end-capped polyurethane prepolymers that may be crosslinked via a moisture cure. Additionally, it is also within the scope of the present disclosure that the elastomeric gels may also contain some isocyanurate functionality therein and/or may be combined with one or more epoxy or other gels to form a hybrid gel.
- a monomer species such as lignins, ligno sulfonates, tannins, tannic acids, biopolymers, natural polymers, polyamines, polyether amines, poly vinyl amines and polyethylene imines, modified derivatives thereof, and combinations thereof may be crosslinked with hardening agents such as ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, butylene glycol diglycidyl ether, sorbitol polyglycidyl ether, aziridine derivatives, epoxy functionalized polyalkalene glycols, an oxidized starch (polymeric dialdehyde), acetals that can be hydrolyzed to produce the aldehyde in situ, and combinations thereof.
- hardening agents such as ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, butylene glycol diglycidyl ether, sorbitol polyglycidyl ether,
- various epoxy- functionalized natural oils such as soybean oil, linseed oil, rapeseed oil, cashew nut shell oil, perilla oil, rung oil, oiticia oil, safflower oil, poppy oil, hemp oil, cottonseed oil, sunflower oil, high-oleic triglycerides, triglycerides of euphorbia plants, peanut oil, olive oil, olive kernel oil, almond oil, kapok oil, hazelnut oil, apricot kernel oil, beechnut oil, lupin oil, maize oil, sesame oil, grapeseed oil, lallemantia oil, castor oil, herring oil, sardine oil, menhaden oil, whale oil, and tall oil, may be crosslinked with hardening agents comprising amines, alcohols, phenols, thiols, carbanions, and carboxylates, and aliphatic polyamine, polyethylenimine, polyetheramine, modified cycl
- polyamines and polyols may be crosslinked with an isocyanate, including a blocked isocyanate to form a polyurea and polyurethane, respectively.
- silane end-capped polyurethane prepolymers may be crosslinked via a moisture cure.
- the settability of the carrier fluid is due to the combination of the lipophilic monomer with the crosslinking agent in an appropriate solvent.
- solvents that may be appropriate may comprise oil-based fluids for use in downhole applications and may include mineral oil, diesel, and synthetic oils, or an aqueous-based fluid, such as fresh water, sea water, brine, mixture of water and water soluble organic compounds, and mixtures thereof.
- the optimal ratios for the monomer species and hardening agent may vary greatly depending on the type of hardening mechanism. Further, the amount of hardening agent may affect the hardness of the resulting gel. For example, in some embodiments, for a constant weight of monomer, increasing the amount of hardening agent may result in a higher crosslink density, and therefore a harder gel. Using the guidelines provided herein, those skilled in the art will be capable of determining a suitable amount of hardening agent to employ to achieve a set gel structure of the desired hardness.
- Embodiments disclosed herein may also range in their setting or gellation times.
- a gel may form immediately upon mixing of monomers and hardening agents.
- a gel may form within 1 minute of mixing; within 5 minutes of mixing in other embodiments; within 30 minutes of mixing in other embodiments.
- a gel may form within 1 hour of mixing; within 8 hours in other embodiments; within 16 hours in other embodiments; within 80 hours in other embodiments; within 120 hours in yet other embodiments.
- varying chemical species and ratios of species used, temperatures, and/or incorporation of accelerators and retardants may be used to control setting times of the carrier fluids.
- the reaction of the monomer and hardening agent may produce gels having a consistency ranging from a viscous sludge to a hard gel.
- the reaction of the gelling agent and the crosslinking agent may result in a soft elastic gel; a firm gel in other embodiments; and a hard gel in yet other embodiments.
- the hardness of the gel is the force necessary to break the gel structure, which may be quantified by measuring the force required for a needle to penetrate the crosslinked structure. Hardness is a measure of the ability of the gel to resist to an established degree the penetration of a test needle driven into the sample at a constant speed. Hardness and compressive strength may be measured by using a Brookfield
- QTS -25 Texture Analysis Instrument This instrument consists of a probe of changeable design that is connected to a load cell. The probe may be driven into a test sample at specific speeds or loads ' to measure the following parameters or properties of a sample: springiness, adhesiveness, curing, breaking strength, fracturability, peel strength, hardness, cohesiveness, relaxation, recovery, tensile strength burst point, and spreadability.
- the hardness and compressive strength may be measured by driving a 4 mm diameter, cylindrical, fiat faced probe into the gel sample in a 75 mL glass vial containing approximately 60 mL of test fluid at a constant speed of 30 mm per minute to a depth of 35 mm.
- the probe When the probe is in contact with the gel, a force is applied to the probe due to the resistance of the gel structure until it fails, which is recorded via the load cell and computer software. As the probe travels through the sample, the force on the probe and the depth of penetration are measured. The force on the probe may be recorded at the initial breakthrough and at various depths of penetration, providing an indication of the gel's overall hardness. For example, the initial peak force may be recorded at the point the gel first fails, close to the contact point, followed by recording highest and lowest values measured after this point where the probe is traveling through the bulk of the gel In some embodiments, the resulting gel may have a hardness value from 2 to 20000 gram-force.
- the resulting gel may be a soft elastic gel having a hardness value in the range from 2 to 20 gram-force. In other embodiments, the resulting gel may be a firm gel having a hardness value from 20 to 100 gram-force. In other embodiments, the resulting gel may range from hard to tough, having a hardness value from 100 to 20000 gram-force; from 300 to 15000 gram-force in other embodiments; from 500 to 10000 gram-force in yet other embodiments; from 1000 to 6000 gram-force in yet other embodiments. In other embodiments, the hardness of the gel may vary with the depth of penetration.
- the compressive strength (or hardness) of the gelled or solidified structure within the fracture may also be advantageous to control the compressive strength (or hardness) of the gelled or solidified structure within the fracture. That is, to ensure that the set fluid within the fracture and the formed bridge are not lost during subsequent operations, it may be desired to formulate a carrier fluid that upon setting, will have sufficient strength to hold in place, such that extrusion back into the wellbore, as well as transmission of pressure from the wellbore into the fracture, may be avoided.
- the methods of the present disclosure may allow for the selection of a settable carrier fluid that possesses desirable strength characteristics upon setting.
- the compressive strength may be controlled.
- the addition of particulate additives, such as weighting agent may also be used to control the compressive strength of the set fluid.
- the desirable strength may depend on the particular formation through which the wellbore, and fractures, are formed; however, such strength requirements may range from, in various embodiments, one-third that of the formation to less than the compressive strength of the formation, and one-half to less than that of the formation in yet other embodiment.
- the inventors of the present disclosure have also recognized that depending on the formation, and the settable carrier fluid selected for use in treating the formation, a compressive strength less than that thought to be required to avoid extrusion back into the wellbore may be sufficient due to chemical adhesion of the set resin in the fracture to the formation.
- properties of the resulting set or gelled structure may be tailored as desired. Further, selection of the carrier fluid may be based on the resulting properties upon setting, including for example, compressive strength, chemical adhesion of the resin to the surrounding formation, etc.
- the fluid of the present disclosure containing a settable carrier fluid and bridging materials may be introduced into the wellbore as a "pill" and may be squeezed into the low permeability formation to be strengthened at a pressure above the initial fracture pressure of the formation so that the bridging particulate material bridges the fractures that are induced in the wellbore wall at or near the mouth thereof.
- the pill is squeezed into the formation by sealing the annulus between a drill string and the wellbore wall, running into the hole open ended until the open end is adjacent the target formation zone, and pumping the pill into the wellbore via the drill string, pulling the drill string out of the way, and pressurizing the wellbore until the pressure in the vicinity of the target formation is greater than the initial fracture pressure or re-open pressure (for re-opening fractures) of the formation.
- the pressure may then be held while the pill sets, which may vary, as described above, depending on the type of settable fluid used.
- the drilling assembly may be run back in the hole and drilling out the remaining pill and the wellbore may be continued using a conventional drilling mud.
- future drilling operations it may be desirable to maintain the pressure in the wellbore in the vicinity of the strengthened formation below the breakdown pressure of the strengthened formation. Future drilling operations may be conducted with either an oil- or water-based drilling fluid, depending on their desirability.
- the bridging material may bridge the induced (or re-opened) fractures within less than 10 seconds, preferably less than 5 seconds from when the fracture opens so that the fracture remains short. While the bridging of the fracture may desirably be short, one of ordinary skill of the art would appreciate that the setting of the carrier fluid need not be limited to such time period. Rather, as described above, the pressure within the wellbore may be held at the elevated level until the pill has set. Rapid sealing of the fracture may mitigate the risk of the fracture propagating.
- the natural polymers may be present in the drilling fluid, and a hardening agent or crosslinkant may be emplaced subsequently to the region of the formation needing strengthening, such that upon contact of the monomer (natural polymer) with the hardening agent during the pressure increase, the two may react, set, and seal the fracture, as described above.
- the carrier fluid and/or drilling fluid may be a water based fluid that may include an aqueous fluid selected from the group including sea water, a brine containing organic and/or inorganic dissolved salts, liquids containing water-miscible organic compounds and combinations thereof and similar compounds that should be known to one of skill in the art.
- Brines suitable for use as the base fluid of the carrier fluid may include seawater, aqueous solutions wherein the salt concentration is less than that of sea water, or aqueous solutions wherein the salt concentration is greater than that of sea water.
- the salinity of seawater may range from about 1 percent to about 4.2 percent salt by weight based on total volume of seawater.
- the solutions, depending on the source of the seawater typically contain metal salts, such as but not limited to, transition metal salts, alkali metal salts, alkaline earth metal salts, and mixtures thereof.
- Exemplary salts include halides of zinc, calcium, and mixtures thereof.
- the solution can include zinc halide, such as zinc bromide or zinc chloride or both, optionally in combination with calcium bromide or calcium chloride or both.
- Salts that may be found in seawater include, but are not limited to, sodium, calcium, aluminum, magnesium, potassium, strontium, and lithium salts of chlorides, bromides, carbonates, iodides, chlorates, bromates, formates, sulfates, silicates, phosphates, nitrates, oxides, and fluorides.
- Salts that may be incorporated in a given brine include any one or more of those present in natural seawater or any other organic or inorganic dissolved salts.
- brines that may be used in the drilling fluids disclosed herein may be natural or synthetic, with synthetic brines tending to be much simpler in constitution.
- the density of the drilling fluid may be controlled by increasing the salt concentration in the brine (up to saturation).
- a brine may include halide or carboxylate salts of mono- or divalent cations of metals, such as cesium, potassium, calcium, zinc, and/or sodium.
- the brine solution can include the salts in conventional amounts, generally ranging from about 1% to about 80%, and preferably from about 20% to about 60%, based on the total weight of the solution, although as the skilled artisan will appreciate, amounts outside of this range can be used as well, hi a particular embodiment, the brine may be a CaCl 2 and/or CaBr 2 brine.
- the carrier fluid and/or drilling fluid may be an oil-based fluid and/or an invert emulsion based fluid that may include a non- oleaginous internal phase and an oleaginous external phase.
- the oleaginous fluid used for formulating oil-based fluids and/or invert emulsion fluids used in the practice of the present disclosure are liquids and are more preferably a natural or synthetic oil and more preferably, the oleaginous fluid is selected from the group including diesel oil, mineral oil, synthetic oils such as ester based synthetic oils, polyolefin based synthetic oils (i.e., saturated and unsaturated polyalpha olefin, saturated and unsaturated long chain internal olefins), polydiorganosiloxanes, siloxanes or organo- siloxanes, and mixtures thereof and similar compounds that should be known to one of skill in the art.
- the concentration of the oleaginous fluid should be sufficient so that an invert emulsion forms and may be less than about 99% by volume of the invert emulsion.
- the amount of oleaginous fluid must be sufficient to form a stable emulsion when utilized as the continuous phase.
- the amount of oleaginous fluid at least about 30 percent, preferably at least about 40 percent, and more preferably at least about 50 percent by volume of the total fluid.
- the amount of oleaginous fluid is from about 30 to about 95 percent by volume and more preferably from about 40 to about 90 percent by volume of the invert emulsion fluid.
- the non-oleaginous fluid used in the formulation of the invert emulsion based fluids is a liquid and preferably is an aqueous liquid. More preferably, the non- oleaginous fluid may be selected from the group including sea water, a brine containing organic and/or inorganic dissolved salts, liquids containing water-miscible organic compounds and combinations thereof and similar compounds that should be known to one of skill in the art.
- the amount of the non-oleaginous fluid is typically less than the theoretical limit needed for forming an invert emulsion. In various embodiments, the amount of non-oleaginous liquid is at least about 1, preferably at least about 5, and more preferably greater than about 10 percent by volume of the total fluid.
- the amount of the non-oleaginous fluid should not be so great that it cannot be dispersed in the oleaginous phase.
- the amount of non-oleaginous fluid is less than about 70% by volume and preferably from about 1% to about 70% by volume.
- the non-oleaginous fluid is preferably from about 10% to about 60% by volume of the invert emulsion fluid.
- fluids of the present invention may further contain additional chemicals depending upon the end use of the fluid so long as they do not interfere with the functionality of the fluids described herein.
- additional chemicals for example, wetting agents, weighting agents, organophilic clays, viscosifiers, fluid loss control agents, surfactants, dispersants, interfacial tension reducers, pH buffers, mutual solvents, thinners, thinning agents, scale inhibition agents, corrosion inhibition agents, cleaning agents and a wide variety of the other components known to one of skill in the art may be added to the fluid compositions of this invention for additional functional properties.
- drilling fluids also known as drilling muds,
- completion fluids spacer fluids
- clean-up fluids fracturing fluids
- other similar wellbore fluids drilling fluids (also known as drilling muds, ) completion fluids, spacer fluids, clean-up fluids, fracturing fluids, and other similar wellbore fluids.
- the following example includes an oil-based pill and experimental data showing properties of the set fluid.
- the pill was formed, using a Hamilton Beach mixer, by mixing and shearing the required quantity of diesel (low sulfur No. 2) and EMI-1 160, an epoxy resin available from M-I LLC (Houston, Texas), for five minutes; adding VG-SUPREMETM, an organoclay viscosif ⁇ er available from M-I LLC (Houston, Texas) and shearing until homogenous.
- the SAFE-CARB® solids, calcium carbonate available from M-I LLC (Houston, Texas) are then mixed in until homogenous.
- EMI-1161, a polyamine and EMI-1162 an amine blend, both available from M-I LLC. (Houston, Texas) are mixed in until homogenous.
- the pill components are listed in Table 1 below.
- the compressive strength of the cross-linked gel was determined, both with and without solids, using a Brookfield QTS 25 texture analyzer fitted with a 4 mm diameter cylindrical probe. Compressive strengths were obtained by measuring the maximum compressive force attained when the cylindrical probe was inserted at constant velocity to a depth of 35 mm into a 75 mL glass vial containing approximately 60 mL of the test fluid. Displacement velocities of 30 mm per minute were utilized throughout and the bulk of tests were performed under ambient conditions.
- a Positester device a "Type V" self-aligning digital pull-off adhesion tester described in ASTM D4541-02 was used to ascertain the relative adhesive qualities of the gel to an oil-based drilling fluid wetted slate. Slate, of English provenance, was ultimately selected as the base material for the adhesion tests. Testing involved first wetting the slate with a thin layer of the oil-based drilling fluid selected for drilling the shale section of the well. A few drops, enough to form a thin film, of the gel formulation were then placed onto the surface of a 20 mm diameter circular disc of slate. This had been previously glued to the base of an aluminum dolly of the type used by the test apparatus.
- a field trial was conducted to test the gel system of this Example to try to form a stress cage and achieve a permanent strengthening effect for a wellbore through a shale formation.
- the test was conducted in a vertical well, across 50 ft of shale in an 8 3/4" hole at approx. 4020 ft.
- the shale was directly below the 9 5/8" casing shoe.
- the formation is fairly im-reactive brittle shale.
- the mud type was diesel OBM with a mud weight of 9.3 ppg.
- the baseline data for the formation breakdown pressure was 1928 psi and on shut-in the pressure bled back to around 1500 psi. On re- pressurization, the re-opening pressure was around 1525 psi. The difference between breakdown and re-opening of about 400 psi (1928-1525 psi) is the tensile strength of the rock.
- the bridging package for the pill was designed by running in-house software, which predicts fracture widths from petrophysical data. A fracture opening width of 0.64 mm was predicted for the wellbore pressure to exceed the minimum horizontal stress by 500 psi.
- the bridging solids design and the field trial procedures were based around this prediction. In particular, a wide range ( ⁇ 2 to 800 microns) of bridging solids were used, allowing for possible variations in fracture width and ensuring that a good seal was obtained on the fracture.
- a balanced plug technique was used. The procedure was to pump 10 bbls diesel spacer, followed by 16 bbls of treatment (10.5 ppg), followed by 2 bbls diesel so that column heights/densities were balanced in the annulus and drill pipe after displacement. Foam wiper balls were placed either side of the treatment.
- a squeeze pressure of 2500 psi was used. This climbed to around 3000 psi surface pressure towards the end of the 19hr squeeze period, perhaps due to rising downhole temperature or heating of surface lines (night versus day temperatures). It was noted that the formulated pill could hold 2500 psi whilst still fully liquid, considering the initial breakdown pressure was 1928 psi.
- the FIT pressure was taken to 1400 psi initially to establish a base line.
- survival tests 1-3 shown in FIGS. 6-8, the pressure was then increased to 1700 psi, which is 175 psi above the original fracture re-opening pressure shown in FIG. 5.
- casing was set at 2388 feet.
- the shoe was drilled out and tested to demonstrate a native formation strength of 988 psi above mud hydrostatic or 17.32 ppg.
- the well was drilled to expose 90 feet of shale formation and the leak-off test was re-run to confirm a native strength of 17.04 ppg.
- a cement pill was placed across the entire open hole with a stress cage formulation containing 251bs/bbl BARACARB® 600, ground marble, 51bs/bbl BARACARB® 150 and lOlbs/bbl STEEL-SEAL® regular, industrial carbon, all of which are available from Baroid Fluid Services (Houston, Texas). Water content in the cement was adjusted to produce a 1000 psi compressive strength at the time the hole was redrilled. The cement/stress cage pill was squeezed into place and pressure held while the cement set. The hole was re-drilled (all but the last 10 feet). A leak-off was run to a pressure of 1179 psi above mud hydrostatic or 18.58 ppg. 18.58 ppg was the anticipated overburden at this depth or the maximum possible strength that could be achieved before introducing horizontal fractures.
- embodiments of the present disclosure may provide for at least one of the following.
- Conventional wisdom in the field of wellbore strengthening has long asserted that low permeability formations such as shale could not be strengthened using a stress cage approach.
- embodiments discloses herein allow for a method of strengthening such low permeability formations.
- embodiments disclosed herein may provide a means for increasing the fracture resistance of a formation and strengthening weak regions of a wellbore so that the well may be drilled using a higher mud weight than could normally be used without inducing fractures.
- such techniques may allow for more economical and efficient drilling, particularly in depleted sand zones neighbored by or inter- bedded with shales.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Material Composition (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2694511A CA2694511C (en) | 2007-08-01 | 2008-08-01 | Methods of increasing fracture resistance in low permeability formations |
MX2010001144A MX2010001144A (en) | 2007-08-01 | 2008-08-01 | Methods of increasing fracture resistance in low permeability formations. |
US12/669,967 US9103206B2 (en) | 2007-08-01 | 2008-08-01 | Methods of increasing fracture resistance in low permeability formations |
EP08797045.5A EP2183464A4 (en) | 2007-08-01 | 2008-08-01 | Methods of increasing fracture resistance in low permeability formations |
BRPI0813886-9A2A BRPI0813886A2 (en) | 2007-08-01 | 2008-08-01 | METHODS OF INCREASING FRACTURE RESISTANCE IN LOW PERMEABILITY FORMATIONS |
EA201070208A EA017428B1 (en) | 2007-08-01 | 2008-08-01 | Methods of increasing fracture resistance in low permeability formations |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US95338707P | 2007-08-01 | 2007-08-01 | |
US60/953,387 | 2007-08-01 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2009018536A2 true WO2009018536A2 (en) | 2009-02-05 |
WO2009018536A3 WO2009018536A3 (en) | 2009-05-07 |
WO2009018536A4 WO2009018536A4 (en) | 2009-07-02 |
Family
ID=40305292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2008/071978 WO2009018536A2 (en) | 2007-08-01 | 2008-08-01 | Methods of increasing fracture resistance in low permeability formations |
Country Status (8)
Country | Link |
---|---|
US (1) | US9103206B2 (en) |
EP (1) | EP2183464A4 (en) |
AR (1) | AR067784A1 (en) |
BR (1) | BRPI0813886A2 (en) |
CA (1) | CA2694511C (en) |
EA (1) | EA017428B1 (en) |
MX (1) | MX2010001144A (en) |
WO (1) | WO2009018536A2 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2251524A1 (en) * | 2009-05-13 | 2010-11-17 | BP Exploration Operating Company Limited | Wellbore treatment |
WO2011044211A3 (en) * | 2009-10-06 | 2011-08-25 | M-I L.L.C. | Method and apparatus for drilling a probabilistic approach |
WO2011149479A1 (en) * | 2010-05-28 | 2011-12-01 | Conocophillips Company | Enhanced smear effect fracture plugging process for drilling systems |
US8401795B2 (en) | 2008-01-30 | 2013-03-19 | M-I L.L.C. | Methods of detecting, preventing, and remediating lost circulation |
US8807244B2 (en) | 2011-02-18 | 2014-08-19 | Schlumberger Technology Corporation | Method and apparatus for strengthening a wellbore |
WO2019035902A1 (en) * | 2017-08-15 | 2019-02-21 | Saudi Arabian Oil Company | Rapidly cooling a geologic formation in which a wellbore is formed |
US10508517B2 (en) | 2018-03-07 | 2019-12-17 | Saudi Arabian Oil Company | Removing scale from a wellbore |
US11585176B2 (en) | 2021-03-23 | 2023-02-21 | Saudi Arabian Oil Company | Sealing cracked cement in a wellbore casing |
US11867028B2 (en) | 2021-01-06 | 2024-01-09 | Saudi Arabian Oil Company | Gauge cutter and sampler apparatus |
US11867012B2 (en) | 2021-12-06 | 2024-01-09 | Saudi Arabian Oil Company | Gauge cutter and sampler apparatus |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9045969B2 (en) * | 2008-09-10 | 2015-06-02 | Schlumberger Technology Corporation | Measuring properties of low permeability formations |
US10669471B2 (en) | 2009-08-10 | 2020-06-02 | Quidnet Energy Inc. | Hydraulic geofracture energy storage system with desalination |
GB0921711D0 (en) * | 2009-12-11 | 2010-01-27 | M I Drilling Fluids Uk Ltd | Use of elastomers to produce gels for treating a wellbore |
US9109992B2 (en) * | 2011-06-10 | 2015-08-18 | Halliburton Energy Services, Inc. | Method for strengthening a wellbore of a well |
US9484123B2 (en) | 2011-09-16 | 2016-11-01 | Prc-Desoto International, Inc. | Conductive sealant compositions |
MX360865B (en) * | 2012-01-02 | 2018-11-09 | Environmetal Development Products Endevpro Ltd Star | Composition of biodegradable surfactants for separating hydrocarbon impurities. |
CA2876103A1 (en) * | 2012-06-21 | 2013-12-27 | Shell Internationale Research Maatschappij B.V. | Method of treating a subterranean formation with a mortar slurry designed to form a permeable mortar |
US20140060834A1 (en) * | 2012-08-31 | 2014-03-06 | Baker Hughes Incorporated | Controlled Electrolytic Metallic Materials for Wellbore Sealing and Strengthening |
GB2535880B (en) * | 2013-09-09 | 2020-05-13 | Halliburton Energy Services Inc | Two-part set-delayed cement compositions |
MX2016007553A (en) * | 2014-01-14 | 2016-10-03 | Halliburton Energy Services Inc | Methods of enhancing fluid loss control using additives. |
US9803475B2 (en) | 2014-04-09 | 2017-10-31 | Weatherford Technology Holdings, Llc | System and method for integrated wellbore stress, stability and strengthening analyses |
US10227836B2 (en) * | 2014-04-25 | 2019-03-12 | Weatherford Technology Holdings, Llc | System and method for managed pressure wellbore strengthening |
CA2991481A1 (en) * | 2015-08-10 | 2017-02-16 | Halliburton Energy Services, Inc. | Controllable sealant composition for conformance and consolidation applications |
US11155744B2 (en) | 2016-08-19 | 2021-10-26 | Schlumberger Technology Corporation | Coated lost circulation materials and methods of using same |
US11840909B2 (en) * | 2016-09-12 | 2023-12-12 | Schlumberger Technology Corporation | Attaining access to compromised fractured production regions at an oilfield |
US11466549B2 (en) | 2017-01-04 | 2022-10-11 | Schlumberger Technology Corporation | Reservoir stimulation comprising hydraulic fracturing through extended tunnels |
US11486214B2 (en) | 2017-07-10 | 2022-11-01 | Schlumberger Technology Corporation | Controlled release of hose |
WO2019014160A1 (en) | 2017-07-10 | 2019-01-17 | Schlumberger Technology Corporation | Radial drilling link transmission and flex shaft protective cover |
US11193332B2 (en) | 2018-09-13 | 2021-12-07 | Schlumberger Technology Corporation | Slider compensated flexible shaft drilling system |
AU2019264551A1 (en) * | 2018-11-13 | 2020-05-28 | Quidnet Energy Inc. | Hydraulic geofracture energy storage system with desalination |
US11485898B2 (en) | 2020-10-21 | 2022-11-01 | Saudi Arabian Oil Company | Environmentally friendly epoxidized vegetable oil based fatty acid esters to prevent loss circulation |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060254826A1 (en) | 2003-07-25 | 2006-11-16 | Alberthy Mark | Drilling method |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5839510A (en) * | 1995-03-29 | 1998-11-24 | Halliburton Energy Services, Inc. | Control of particulate flowback in subterranean wells |
US5604184A (en) | 1995-04-10 | 1997-02-18 | Texaco, Inc. | Chemically inert resin coated proppant system for control of proppant flowback in hydraulically fractured wells |
US5921317A (en) | 1997-08-14 | 1999-07-13 | Halliburton Energy Services, Inc. | Coating well proppant with hardenable resin-fiber composites |
US6328106B1 (en) * | 1999-02-04 | 2001-12-11 | Halliburton Energy Services, Inc. | Sealing subterranean zones |
US6837309B2 (en) * | 2001-09-11 | 2005-01-04 | Schlumberger Technology Corporation | Methods and fluid compositions designed to cause tip screenouts |
US6976537B1 (en) | 2002-01-30 | 2005-12-20 | Turbo-Chem International, Inc. | Method for decreasing lost circulation during well operation |
US6739414B2 (en) * | 2002-04-30 | 2004-05-25 | Masi Technologies, L.L.C. | Compositions and methods for sealing formations |
US6814144B2 (en) * | 2002-11-18 | 2004-11-09 | Exxonmobil Upstream Research Company | Well treating process and system |
US7004255B2 (en) * | 2003-06-04 | 2006-02-28 | Schlumberger Technology Corporation | Fracture plugging |
US7114560B2 (en) * | 2003-06-23 | 2006-10-03 | Halliburton Energy Services, Inc. | Methods for enhancing treatment fluid placement in a subterranean formation |
US7063150B2 (en) * | 2003-11-25 | 2006-06-20 | Halliburton Energy Services, Inc. | Methods for preparing slurries of coated particulates |
US7143828B2 (en) * | 2004-01-29 | 2006-12-05 | Halliburton Energy Services, Inc. | Emulsion admixtures for improving cement elasticity |
US20070039732A1 (en) * | 2005-08-18 | 2007-02-22 | Bj Services Company | Methods and compositions for improving hydrocarbon recovery by water flood intervention |
US8377853B2 (en) | 2006-04-20 | 2013-02-19 | M-I L.L.C. | Aqueous gels for well bore strengthening |
US7727938B2 (en) * | 2006-06-09 | 2010-06-01 | M-I L.L.C. | Non-aqueous gels for consolidating and stabilizing wellbore formations |
US7934557B2 (en) * | 2007-02-15 | 2011-05-03 | Halliburton Energy Services, Inc. | Methods of completing wells for controlling water and particulate production |
US20100120944A1 (en) | 2007-04-27 | 2010-05-13 | M-I L.L.C. | Use of curable liquid elastomers to produce gels for treating a wellbore |
CA2685206C (en) | 2007-04-27 | 2011-07-05 | M-I Llc | Use of elastomers to produce gels for treating a wellbore |
-
2008
- 2008-08-01 US US12/669,967 patent/US9103206B2/en active Active
- 2008-08-01 EA EA201070208A patent/EA017428B1/en not_active IP Right Cessation
- 2008-08-01 AR ARP080103365A patent/AR067784A1/en unknown
- 2008-08-01 WO PCT/US2008/071978 patent/WO2009018536A2/en active Application Filing
- 2008-08-01 CA CA2694511A patent/CA2694511C/en active Active
- 2008-08-01 BR BRPI0813886-9A2A patent/BRPI0813886A2/en not_active Application Discontinuation
- 2008-08-01 EP EP08797045.5A patent/EP2183464A4/en not_active Withdrawn
- 2008-08-01 MX MX2010001144A patent/MX2010001144A/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060254826A1 (en) | 2003-07-25 | 2006-11-16 | Alberthy Mark | Drilling method |
Non-Patent Citations (4)
Title |
---|
"A Physical Model for Stress Cages", SPE 90493, 2004 |
"Drilling Fluids for Wellbore Strengthening", IADC/SPE 87130, 2004 |
"Fracture Closure Stress (FCS) and Lost Returns Practices", IADC/SPE 92192, 2005 |
See also references of EP2183464A4 |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9863240B2 (en) | 2004-03-11 | 2018-01-09 | M-I L.L.C. | Method and apparatus for drilling a probabilistic approach |
US8401795B2 (en) | 2008-01-30 | 2013-03-19 | M-I L.L.C. | Methods of detecting, preventing, and remediating lost circulation |
EP2251524A1 (en) * | 2009-05-13 | 2010-11-17 | BP Exploration Operating Company Limited | Wellbore treatment |
US8813873B2 (en) | 2009-05-29 | 2014-08-26 | Conocophillips Company | Enhanced smear effect fracture plugging process for drilling systems |
WO2011044211A3 (en) * | 2009-10-06 | 2011-08-25 | M-I L.L.C. | Method and apparatus for drilling a probabilistic approach |
WO2011149479A1 (en) * | 2010-05-28 | 2011-12-01 | Conocophillips Company | Enhanced smear effect fracture plugging process for drilling systems |
US8807244B2 (en) | 2011-02-18 | 2014-08-19 | Schlumberger Technology Corporation | Method and apparatus for strengthening a wellbore |
US10450839B2 (en) | 2017-08-15 | 2019-10-22 | Saudi Arabian Oil Company | Rapidly cooling a geologic formation in which a wellbore is formed |
WO2019035902A1 (en) * | 2017-08-15 | 2019-02-21 | Saudi Arabian Oil Company | Rapidly cooling a geologic formation in which a wellbore is formed |
US10724338B2 (en) | 2017-08-15 | 2020-07-28 | Saudi Arabian Oil Company | Rapidly cooling a geologic formation in which a wellbore is formed |
US10724337B2 (en) | 2017-08-15 | 2020-07-28 | Saudi Arabian Oil Company | Rapidly cooling a geologic formation in which a wellbore is formed |
US10508517B2 (en) | 2018-03-07 | 2019-12-17 | Saudi Arabian Oil Company | Removing scale from a wellbore |
US10677021B2 (en) | 2018-03-07 | 2020-06-09 | Saudi Arabian Oil Company | Removing scale from a wellbore |
US10677020B2 (en) | 2018-03-07 | 2020-06-09 | Saudi Arabian Oil Company | Removing scale from a wellbore |
US11867028B2 (en) | 2021-01-06 | 2024-01-09 | Saudi Arabian Oil Company | Gauge cutter and sampler apparatus |
US11585176B2 (en) | 2021-03-23 | 2023-02-21 | Saudi Arabian Oil Company | Sealing cracked cement in a wellbore casing |
US11867012B2 (en) | 2021-12-06 | 2024-01-09 | Saudi Arabian Oil Company | Gauge cutter and sampler apparatus |
Also Published As
Publication number | Publication date |
---|---|
US9103206B2 (en) | 2015-08-11 |
EP2183464A4 (en) | 2014-06-18 |
US20100282470A1 (en) | 2010-11-11 |
AR067784A1 (en) | 2009-10-21 |
EA201070208A1 (en) | 2010-08-30 |
WO2009018536A4 (en) | 2009-07-02 |
MX2010001144A (en) | 2010-04-01 |
CA2694511A1 (en) | 2009-02-05 |
BRPI0813886A2 (en) | 2015-01-13 |
CA2694511C (en) | 2014-05-06 |
EP2183464A2 (en) | 2010-05-12 |
WO2009018536A3 (en) | 2009-05-07 |
EA017428B1 (en) | 2012-12-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9103206B2 (en) | Methods of increasing fracture resistance in low permeability formations | |
US7748455B2 (en) | Surfaced mixed epoxy method for primary cementing of a well | |
EP1929121B1 (en) | In-situ solidification of invert emulsion fluids to form gas tight annular barrier | |
US7350576B2 (en) | Methods of sealing subterranean formations using rapid setting plugging compositions | |
US7544641B2 (en) | Rapid setting plugging compositions for sealing subterranean formations | |
US20080060811A1 (en) | Method to control the physical interface between two or more fluids | |
RU2635310C1 (en) | Hardening compositions containing cement dust, and methods for their application | |
RU2746637C2 (en) | Application of cements based on metal oxides | |
US11499087B2 (en) | Thermally responsive lost circulation materials | |
US11976238B2 (en) | Geopolymer formulations for mitigating losses | |
US20010022224A1 (en) | Cementing spacers for improved well cementation | |
US11091687B2 (en) | Methods of improving conformance applications | |
Brunherotto et al. | Integrated solution for deepwater cementing challenges: Case histories | |
Eoff et al. | New chemical systems and placement methods to stabilize and seal deepwater shallow-water flow zones | |
Hamburger et al. | A shear-thickening fluid for stopping unwanted flows while drilling | |
EP1917322B1 (en) | Rapid setting plugging compositions and methods for sealing subterranean formations | |
Rodvelt | Improved construction of vertical wells | |
Rodvelt | 12.1 Latest drilling technology | |
Bijjani et al. | Successfully Controlling Fluid Losses in Troublesome Zones of Jurassic to Permian Age in Offshore United Arab Emirates Utilizing a Newly Optimized Crosslinked Borate Fluid Loss System. | |
CA2377347C (en) | Cementing spacers for improved well cementation | |
Colombo et al. | Use of a Delayed-Release Acid Treatment for Wellbore Remediation in Offshore Carbonate Field |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08797045 Country of ref document: EP Kind code of ref document: A2 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2694511 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2010/001144 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 201070208 Country of ref document: EA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008797045 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12669967 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: PI0813886 Country of ref document: BR Kind code of ref document: A2 Effective date: 20100129 |