Nhazi na Nkọwa Data 3D nke Ala Ọma Jijiji
Nhazi data ala ọma jijiji nke 3D bụ ụzọ dị oke mkpa n'inyocha na mmepụta mmanụ na gas. Site na nhazi data ala ọma jijiji nke 3D, ndị ọkà mmụta geophysics nwere ike nweta nkọwa zuru ezu nke nhazi ala ụwa. Isiokwu a ga-atụle usoro nhazi data ala ọma jijiji nke 3D, site na inweta data ruo na nkọwa nke nsonaazụ ya.
Nnweta Data 3D nke Ala Ọma Jijiji
Usoro nhazi data 3D nke ala ọma jijiji na-amalite site n'inweta data. Inweta data ala ọma jijiji na-agụnye ịtinye ebili mmiri ala ọma jijiji n'ime ụwa wee dekọọ ebili mmiri ndị oyi akwa dị n'okpuru ala na-egosipụta azụ. A na-emepụta ebili mmiri ala ọma jijiji ndị a site na isi iyi ike dị ka ihe mgbawa ma ọ bụ ihe na-eme ka mmiri dị egwu.
A na-etinye ihe mmetụta, ma ọ bụ geophones, n'elu ala iji dekọọ ebili mmiri ala ọma jijiji nke na-egosipụta. Na nyocha 3D, enwere ike itinye puku kwuru puku ruo ọtụtụ iri puku geophones n'ime grid ahaziri nke ọma, na-ebute data dị oke elu. A na-akpọ data nke geophones ndị a dekọrọ ndekọ ala ọma jijiji.
Nhazi Data
Ozugbo enwetara data seismic 3D, nzọụkwụ ọzọ bụ nhazi data. Nhazi data seismic 3D dị mgbagwoju anya ma na-agụnye usoro usoro iji melite ogo data na iwepụ mkpọtụ. Ụfọdụ n'ime usoro ndị bụ isi na nhazi data bụ ndị a:
1. Mbelata mkpọtụ: Nzọụkwụ mbụ a bụ iwepụ mkpọtụ ma ọ bụ nnyonye anya e dekọrọ na mgbaàmà ala ọma jijiji. Mkpọtụ nwere ike isi n'ọtụtụ ebe pụta, gụnyere ọrụ mmadụ, ifufe, na akụrụngwa ejiri mee nnyocha ahụ.
2. Mwepụ: Nzọụkwụ a na-achọ ime ka mkpebi oge nke data ala ọma jijiji dịkwuo mma site na iwepụ mmetụta nke sistemụ ndekọ na mgbaàmà ala ọma jijiji e dekọrọ. Usoro mwepụ mgbanwe a na-enyere aka kewapụ mgbaàmà mbụ na mkpọtụ.
3. Ndozi Nkịtị Nkwagharị (NMO): Ebili mmiri ala ọma jijiji nke geophones dekọrọ na-agbanwe n'oge ọbịbịa dabere na anya dị n'etiti isi mmalite na ihe mmetụta. A na-eji ndozi NMO edozi mgbanwe ndị a, na-enyere aka ịhazi data ala ọma jijiji nke ọma.
4. Ịchịkọta: Mgbe emechara NMO, a na-ejikọta ma ọ bụ na-agbakọta data ala ọma jijiji sitere na isi mmalite dị iche iche nke geophones dị iche iche dekọrọ iji melite SNR (Mgbaàmà-na-Mkpọtụ Ratio). Usoro nchịkọta a na-enyere aka ime ka onyinyo ala ọma jijiji ikpeazụ dịkwuo mma.
5. Mbugharị: Otu n'ime usoro kachasị mkpa na nhazi data ala ọma jijiji bụ mbugharị. Ebumnuche Mbugharị bụ ịtụgharị data ala ọma jijiji site na mpaghara oge gaa na mpaghara oghere ma ọ bụ omimi. Usoro a na-enyere aka ịmepụta onyonyo ziri ezi na nke doro anya nke owuwu ala dị n'okpuru ala.
Nyocha nke Njirimara Ala Ọma Jijiji
Mgbe emechara nhazi data ala ọma jijiji, nzọụkwụ ọzọ bụ nyocha njirimara ala ọma jijiji. Njirimara ala ọma jijiji bụ njirimara kpọmkwem nke data ala ọma jijiji nke nwere ike inye ozi ndị ọzọ gbasara njirimara anụ ahụ nke nkume dị n'okpuru ala. Ụfọdụ njirimara ala ọma jijiji a na-enyochakarị gụnyere:
1. Oke: Àgwà a metụtara ike nke ihe mgbaàmà ala ọma jijiji e dekọrọ, nke nwere ike inye ozi gbasara ọdịiche nke impedance acoustic dị n'etiti akwa nkume.
2. Ugboro ole: Nyocha njirimara ugboro ole nwere ike inyere aka ịchọpụta mgbanwe dị na nkume ndị metụtara mgbanwe na lithology ma ọ bụ njirimara mmiri mmiri.
3. Usoro: Njirimara usoro nwere ike inye ozi gbasara ọkpụrụkpụ nke akwa nkume ma mee ka a mata ihe owuwu ala dị mgbagwoju anya.
4. Njikọta: Njirimara njikọta nwere ike inyere aka ịchọpụta ihe ndị dị na ala dịka mmejọ nke nwere ike ọ gaghị apụta ìhè na data ala ọma jijiji nkịtị.
Nkọwa nke ala ọma jijiji
Usoro ikpeazụ nke nhazi data seismic 3D bụ nkọwa. Usoro a gụnyere nyocha njikọta nke data seismic edoziri na njirimara seismic ewepụtara. Nkọwa seismic na-achọ ịghọta nhazi na njirimara ala nke ala dị n'okpuru ala ma chọpụta ebe nchekwa hydrocarbon nwere ike ịdị.
1. Nhazi eserese: Ndị ọkachamara n'ihe gbasara ala na-eji data ala ọma jijiji emepụta maapụ nke ihe owuwu dị n'okpuru ala dịka ntụpọ, mpịachi, na enweghị nkwekọ. Nhazi eserese a na-enyere aka ịchọpụta ọnyà—ihe owuwu ndị nwere ike ịbụ ebe maka nchịkọta hydrocarbon.
2. Nhazi eserese: Nkọwa data ala ọma jijiji gụnyekwara nghọta nkesa nke akwa stratigraphic na gburugburu ha. Nke a nwere ike inyere aka ịchọpụta ụdị ihe ndị dị n'ime ala nwere ike ịnwe hydrocarbons.
3. Mkpebi atụmanya: Mgbe achọpụtachara nhazi na nhazi, nzọụkwụ ọzọ bụ ịchọpụta ihe ndị nwere ike ịnwe hydrocarbons, ma ọ bụ mpaghara ndị nwere ike ịnwe hydrocarbons. A na-eme nke a site na ijikọta ozi ala ọma jijiji na data olulu mmiri na data ala ndị ọzọ.
4. Atụmatụ olu: Site na ihe nlereanya ala 3D nke e ji data ala ọma jijiji rụọ, ndị ọkachamara nwere ike ime atụmatụ nke olu hydrocarbons enwere ike ịchekwa n'ime ebe nchekwa mmiri.
5. Nnyocha ihe egwu: N'ikpeazụ, nkọwa nke ala ọma jijiji gụnyekwara ịtụle ihe egwu na ejighị n'aka. Ụdị ala e ji data ala ọma jijiji mepụta nwere ụfọdụ ejighị n'aka nke a ga-atụle n'ime mkpebi nchọpụta na mmepụta.
Ihe ịma aka na ihe ọhụrụ
N'agbanyeghị uru ya, nhazi data ala ọma jijiji nke 3D na-eche ọtụtụ ihe ịma aka ihu. Nchịkọta data buru ibu na mgbagwoju anya chọrọ kọmputa arụmọrụ dị elu na ngwanrọ pụrụ iche. Ọzọkwa, ọnọdụ ala dị mgbagwoju anya na mkpọtụ data nwere ike imebi ogo nsonaazụ ya.
Agbanyeghị, ọganihu teknụzụ na-aga n'ihu na-eweta ihe ọhụrụ na nhazi data ala ọma jijiji. Ojiji nke mmụta igwe na ọgụgụ isi arụrụ arụ amalitela ịpụta ìhè na nyocha data ala ọma jijiji, na-enye ohere maka mmụba arụmọrụ na arụmọrụ nke usoro nkọwa.
A na-emepụtakwa usoro mgbanwe ala ọma jijiji nke ọma, nke na-enye ohere ka e nweta data ziri ezi karịa na ihe ndị dị n'okpuru ala nke na-agbanwe agbanwe na nke petrophysical. Ọzọkwa, a na-emepụta teknụzụ nhazi data ala ọma jijiji nke oge a, nke na-eme ka o kwe omume ịchọpụta na mkpebi mmepụta ngwa ngwa na nke ziri ezi karị.
Mmechi
Nhazi data seismic 3D na-arụ ọrụ dị oke mkpa n'ụlọ ọrụ mmanụ na gas. Site na usoro usoro, site na inweta data na nhazi ruo na nyocha na nkọwa njirimara, data seismic 3D na-enyere ndị ọkachamara na geophysics aka inweta nkọwa zuru ezu nke nhazi na ihe onwunwe ala dị n'okpuru ala. Site na ọganihu teknụzụ na-aga n'ihu, enwere ike imeri ihe ịma aka na nhazi data seismic, na-eme ka nchọpụta na mmepụta hydrocarbon dị irè ma dị irè karị.
