中国近海油气地震技术现状及展望

Current Condition and Future of Petroleum Seismic Technique in China Offshore

( 1 中国科学院广州地球化学研究所, 广东广州524057; 2 中国海洋北京国际研究中心, 北京100027)

 1. Guangzhou Institute of
G eochemistry, Chinese A cademy of Sciences,
Guangzhou 510640, 2. China O ffshore Beij ing
International R esearch Center, Be ijing 100027, China

There a re some exploration d ifficulties in China offshore,
such as th in- interbeds rese rvo ir form ed in continental fac ies
sedim en t env ironm ent in Boha i Sea area, h igh temperature
and h igh pressure in South Ch ian Sea, seism ic tomography in
dep th and deep- w ater exploration in Sourth Chian Sea. The
se ism ic technique research were streng thened by the
techniques indraught, research ing and deve lopm ent by
coopera ting o r re lying on ourse lves. S ix gas fields were found
by the se ism ic exp lo ration techn ique in Y ingg eha i basin. The
exploration success ratio w as improved by the se ism ic
exploration techn ique for m ultiple gas rese rvo irs in
Qongdongnan basin. Tw o sm a ll gas fie lds and four gas -
bearing structures were found by th is technique. The thin
reservo ir( abou t 5 m eters) can be predicted by the high -
precision se ism ic pred icting technique fo r fluv ia l fac ies
reservo ir in Boha i basin, and the predicted resu lts w ere
inoscu la ted w ith the dr illed resu lts. The developm ent se ism ic
techniques research w ill be streng thened besides the se ism ic
exploration techniques, such as four- d imensional se ism ic
technique, h igh - quality se ism ic techn ique, 3D mu lti -
components VSP, 3D - 4C and 4D- 4C se ism ic techniques.