Ke Hoʻomaopopo nei i nā ʻAno Hana Seismic Multicomponent
Pendahuluan
He ʻenehana holomua wikiwiki ka seismic multicomponent i ka ʻimi a me ka hana ʻana i nā hydrocarbon. Hilinaʻi kēia ʻenehana i ka hoʻohana ʻana i nā ʻano nalu seismic like ʻole e hāʻawi i kahi kiʻi kikoʻī o ke ʻano geological subsurface. Ma ka hoʻohana ʻana i ka ʻikepili mai nā ʻāpana nalu seismic like ʻole, hiki i nā ʻenehana seismic multicomponent ke hāʻawi i ka ʻike waiwai a pololei hoʻi ma mua o nā ʻenehana seismic maʻamau. E kūkākūkā kēia ʻatikala i nā manaʻo kumu, ke ʻano hana, nā pono, a me nā noi i ka ʻoihana aila a me ke kinoea.
Nā Manaʻo Kumu o ka Seismic Multicomponent
ʻO nā ʻano hana seismic multicomponent e pili ana i ke ana ʻana i nā nalu seismic i kekahi mau ʻāpana: nā nalu compression (N-waves), nā nalu shear (S-waves), a i kekahi manawa nā nalu surface. ʻOkoʻa kēia manaʻo mai nā ʻano hana seismic maʻamau, kahi e ana wale ai i nā nalu P. Lawe kēlā me kēia ʻano nalu i ka ʻike kikoʻī e pili ana i nā pōhaku a me nā wai e hele ana ma o ia mea.
1. Nā nalu-P (Nā Nalu Mua): ʻO kēia mau nalu ka wikiwiki loa a ʻo ia ka mea mua e ʻike ʻia e nā geophones. Hoʻolaha nā nalu-P ma o ka pōhaku ma ke kaomi ʻana a me ke kīkoʻo ʻana i ka mea ma ko lākou ala. Hāʻawi lākou i ka ʻike e pili ana i nā waiwai elastic longitudinal o ka medium a lākou e hele ai.
2. Nā nalu-S (Nā nalu lua): ʻOi aku ka lohi o kēia mau nalu ma mua o nā nalu-P a ʻike ʻia i ka lua. Hoʻolaha nā nalu-S ma ka ʻoki ʻana i nā mea kū pololei i ko lākou kuhikuhi hoʻolaha. Hāʻawi lākou i ka ʻike e pili ana i nā waiwai elastic transverse o ka pōhaku.
3. Nā Nalu ʻIli: Hoʻolaha kēia mau nalu ma ka ʻili o ka Honua a ʻoi aku ka paʻakikī no ka mea pili lākou i ka hui pū ʻana o nā nalu P a me S. ʻOiai ua manaʻo pinepine ʻia nā nalu ʻili he walaʻau i nā seismic kuʻuna, hiki iā lākou ke hāʻawi i ka ʻike hou aku i nā seismic multicomponent.
ʻAno hana
Ke Ana ʻana a me ka Loaʻa ʻIkepili
ʻO ka loaʻa ʻana o ka ʻikepili seismic multicomponent e pili ana i ka hoʻohana ʻana i nā geophones kūikawā i hiki ke hoʻopaʻa i ka neʻe ʻana o nā ʻāpana lepo ma nā ʻaoʻao ʻekolu (x, y, a me z). Hāʻawi kēlā me kēia ʻāpana o kēia hōʻailona i hoʻopaʻa ʻia i ka ʻike like ʻole e pili ana i ka hoʻonohonoho honua.
ʻO ke kaʻina hana loaʻa ʻikepili e komo pū ana me kēia mau ʻanuʻu:
1. Ke Kau ʻana o Geophone: Ua kau ʻia nā geophone ʻekolu ʻāpana (3-C geophones) ma nā wahi koʻikoʻi ma ka laina ana.
2. Nā Kumu Hawewe Seismic: Hoʻohana ʻia nā kumu seismic, e like me nā vibrators a i ʻole dynamite, e hana i nā nalu seismic e pālahalaha ana ma ka honua a hoʻi i ka ʻili ma hope o ka noʻonoʻo ʻana.
3. Hoʻopaʻa ʻIkepili: Hoʻopaʻa ʻia nā nalu i hoʻihoʻi ʻia i ka ʻili e nā geophones. Hoʻopaʻa kēlā me kēia geophone i ka neʻe ʻana o ka honua i ʻekolu mau ʻāpana: kū pololei (z), radial ākea (x), a me ka transversal ākea (y).
Ka hana ʻikepili
ʻOi aku ka paʻakikī o ka hana ʻikepili seismic multicomponent ma mua o ka hana ʻikepili seismic hoʻokahi-ʻāpana. ʻO nā ʻanuʻu nui i ka hana ʻikepili:
1. Wehe i ka walaʻau: Wehe i ka walaʻau makemake ʻole a i ʻole ke keakea ʻana mai ka ʻikepili maka.
2. Deconvolution: Hoʻopau i nā hopena o nā nalu kumu e hoʻonui i ka hoʻonā manawa.
3. Hoʻoponopono Paʻa: Hoʻoponopono i nā ʻokoʻa o ka manawa huakaʻi nalu i hoʻokumu ʻia e nā ʻokoʻa o ke kiʻekiʻe a me nā papa lepo ʻili.
4. Ka Hoʻokaʻawale ʻĀpana: Hoʻokaʻawale i ka ʻikepili nalu P a me S no ka nānā hou aku.
5. Neʻe ʻana: Ke hoʻokaʻawale ʻana i nā hōʻailona hoʻohuli i nā wahi maoli ma lalo o ka ʻili me ka hoʻohana ʻana i kahi kumu hoʻohālike wikiwiki seismic.
Wehewehe ʻana
Ma hope o ka hana ʻana i ka ʻikepili, ʻo ka hana aʻe ka wehewehe ʻana. Hoʻohui ʻia nā ʻikepili P- a me S-wave e hāʻawi i kahi kiʻi piha o ka ʻano geological. ʻO ka hoʻohana ʻana i nā ʻano seismic e like me ka wikiwiki o ka interval, Poisson reflectivity, a me nā anomalies impedance elastic e kōkua i ka ʻike ʻana i nā waiwai o nā pōhaku a me nā wai ma lalo o ka ʻilikai.
Nā Pōmaikaʻi o ka Seismic Multicomponent
Hāʻawi ka seismic multicomponent i kekahi mau pono koʻikoʻi i hoʻohālikelike ʻia me nā ʻano hana seismic maʻamau:
1. ʻIke Pololei Hou aku o nā Papa o lalo o ka ʻili: Ma ka hoʻohana ʻana i ka ʻikepili mai nā nalu P a me S, hiki iā mākou ke loaʻa i kahi kiʻi pololei aʻe o nā waiwai elastic o nā pōhaku a me nā wai ma lalo o ka ʻili.
2. Ka ʻIke ʻana i ka Wai: ʻAʻole hiki i nā nalu S ke hoʻolaha ma o nā wai maʻemaʻe, no laila ma ka nānā ʻana i ka ʻikepili nalu S, hiki ke hoʻoholo ʻia kahi o nā waihona hydrocarbon.
3. Ka Nānā ʻana i ka Anisotropy: ʻAe ka seismic multicomponent i ka ʻike ʻana i ka anisotropy, a i ʻole nā ʻano like ʻole o nā waiwai kino o nā pōhaku ma nā ʻaoʻao like ʻole, hiki ke lilo i mea nui i ke kumu hoʻohālike o ka waihona wai.
4. Ke Hoʻomaopopo ʻana i nā Tectonics a me nā Fractures: Hiki i ka ʻike mai nā nalu S ke kōkua i ka hoʻomaopopo ʻana i nā ʻano haki a me ke kuhikuhi ʻana o ke koʻikoʻi ma lalo o ka ʻilikai, he mea nui ia no ka ʻeli ʻana a me ka hoʻolālā hana ʻana.
Nā noi ma ka ʻoihana ʻaila a me ke kinoea
Ke hoʻohana nui ʻia nei nā ʻano hana seismic multicomponent i ka ʻimi ʻana a me ka hana ʻana i ka hydrocarbon no nā kumu like ʻole:
1. Ka ʻImi ʻana a me ka Wehewehe ʻana i nā Waihona Wai: Hoʻohana ʻia kēia ʻano hana e ʻike a palapala i nā waihona hydrocarbon me ka pololei kiʻekiʻe.
2. Ka Loiloi Hiki i ke Kahua: Me nā ʻano elasticity pōhaku kikoʻī hou aku, hiki i nā loea ke loiloi i ka hiki ke hana o ke kahua me ka pololei.
3. Nānā ʻana i ka Hana ʻana: Hoʻohana ka 4D seismic (time-lapse seismics) i ka ʻikepili multicomponent e nānā i nā loli i loko o ka waihona i ka wā o ka hana ʻana, e kōkua ana i ka hoʻokele ʻana i ka waihona ʻoi aku ka maikaʻi.
4. Ka Ikepili Kaiapuni: Hiki i ka hoʻohana ʻana i nā nalu S ke kōkua i ka ʻike ʻana a me ka nānā ʻana i nā leaka a i ʻole ka haumia mai ka waihona wai a i ka papa wai honua.
Ka hopena
He mea hana ikaika ka seismicity multicomponent no ka hoʻomaopopo ʻana i nā ʻano geological subsurface me nā kikoʻī a me ka pololei ma mua o nā ʻano hana seismic maʻamau. Ma ka hoʻohana ʻana i nā ʻano nalu seismic like ʻole, hiki i kēia ʻenehana ke hāʻawi i ka ʻike hou aku e pili ana i nā waiwai o nā pōhaku a me nā wai subsurface, he mea pono loa ia i ka ʻimi ʻana a me ka hana ʻana i ka hydrocarbon. ʻOiai ʻoi aku ka paʻakikī o ke kaʻina hana loaʻa ʻikepili a me ka hana ʻana, ʻoi aku ka nui o nā pono o ka hoʻohana ʻana i ka seismicity multicomponent ma mua o nā pilikia, e lilo ia i mea holomua nui i ka ʻoihana aila a me ke kinoea.
