z? -IS- PETROVIETNAM NGHIEN CUU OA MONG CARBONATE NUT NE KHU VUC LO 102 - 106 BANG TAI LIEU OjA VAT LY GIENG KHOAN ThS Nguyen Van Hoang, ThS Nguyin Anh OiJfc Tong cdng ty Thdm Khai thdc Ddu Email: hoangnv@pvep.com.vn He thong nUt ni ddng vai trd rdt quan trpng doi vdi khd ndng thdm chUa vd cho ddng cua dd chda carbonate ndt ni Cd nhieu phucfng phdp dia vdt ly gieng khoan dupc dp dung de phdt hiin vd nghiin cdu cdc ddi ndt ni nhu phUdng phdp hinh dnh gieng khoan FMI-FMS, STAR-CBIL, chi so hdp thu quang diin (photoelectric factor-Pef), diin trdsudt, cdc dudng siiu dm, dudng mat dd, dddng caliper, bii'u hiin cdc dinh ddi vdi dudng cong Karota vd ddng thdi dung cdc phucmg phdp ndy dexde dinh dp rdng ndt ne cho dd carbonate TUkhda:L6 102 -106, beSdng Hong tich Cenozoie cd c h i l u day ~2.000m va cd cac dja hao Gidi thieu hep dpc theo dCft gay Sdng Ld cd the tdn tai dia hinh d l Ld 102 -106 thudc b l tram tich Sdng Hong, phia Ble vdl chdn viii b i n Ddi Bach Long VT bj I n h hudng them lye dja Viet Nam dUoc hinh t d dja hao dang bdi hoat ddng k i l n tao nghjeh d I o sudt thdi ky keo tach ed hUdng Tay Ble - Ddng Nam dupe khdng che Oligocene den Miocene sdm tao nen cac dja hao hep d hai canh bIng cac diit g l y trUdt thuan ngang (Nguyen b i n Manh Huyen va nnk, 2007) SU va cham eUa mIng Ddng Trong khu \i\ic Ld 102 -106 da khoan gieng, Duong va A - Au d giai doan Eocene - Oligocene sdm la khdi dau ciia boat ddng diift gay d khu vyc, sau dd la hoat dd mot gieng cd phat hien d eau tao Thai Binh eho ddng van xoSn theo chieu kim ddng hd va keo tach Be lUu luong kha tdt tram tich cat ket Miocene giCfa; tram tich t r l i qua mot Ijch sd phat t r i l n t d Paleogene den phat hien dau, condensate, khf da mdng nut n l vdi nhilu pha nen ep, tach gian, nghich dIo, bao mdn carbonate trUdc Cenozoie d cau tao Ham Rdng elt xen va liin chim nhiet Be Sdng Hdng cd nhilu don vj Nghien cuTu he thong nuft nk b^ng cac phi/ang phdp cau true, nhien d Ld 102 - 106 dUpc chia lam khu vUc dja vat ly gieng khoan chinh (Hinh 1): 2.1 Ddc diem cda dd mong carbonate ndt ni Khu \i\lc Tay Nam ( n l m d phia Tay Nam cCia duft g l y song Chly va thude them ddn nghieng Thanh Nghe) Dp rdng da carbonate dupe chia lam loai la dp vdi cac phUc hdp da b i l n chat tudi Proterozoie, tram tich rong nguyen sinh va dp rong t h d sinh carbonate v l tram tfch lye nguy#n tudi Mesozdic vdi chilu day tram tich xap xi 2.000m Trung Trung tam ( n l m d glCfa diit g l y Sdng Ld va Sdng Chly) bj I n h hudng rat manh bdi hoat ddng kiln tao nghjeh dSo sudt thdi ky '?'-r^^- ' J '^ O^ "' '•- \V^^^^ - • ' m^iMiB^S^ "'"Nf \ ^ Viing Ddng Ble ( n l m d phia duoc chia t i c h phan t h I m U H ^ ^ W/X -ft, p.^^iw A A Wk ã i*ô' i^^Pf^"" X _ ' _ ^ ' ^ i o : ^ > Ha Long v^ khu •vuc Bach Long Vi ^•1 ^ ^ BSiam.r ^ Them Ha Long la them d l mdng tudi W^ V'"'_a Paleozoic dUdc phd tr^n bdi tram J^'^^JhemHsTLortg J Dm n3ng B^ch Long V Miocene, tham chf Ien tdi Pliocene; Ddng B^c ciia d d t gay Sdng Ld) ^^^^^^^^1 ^ ^ r i SKKmiiv^RCHSDng :*ulSr'