哈东次洼勘探历程与启示

哈东洼槽是二连盆地油气勘探获得突破的第一个次级小洼槽。本文通过成果,同时通过对哈东洼槽勘探历程的回顾,进一步揭示了加强区带地质综合研究,提高施工质量,提高认识和评价油层的技术手段,以及针对久攻不克的地区,地质研究要冲破束缚、解放思想、创新认识的重要性;同时也揭示了次级小洼槽只要有有利的烃源岩建造,就可以形成工业性油气富集,其中近油源并处于主油气运移方向上、叠置有利砂体的长期继承性构造高点圈闭,是勘探突破的首选目标。

Exploration Course and Enlightenment of Hadong Subsag.

Hadong subsag is the firgt one to have oil and gas explora-tion breakhrough in Erlian basin. Based on the results and re-view of Hadong subsag exploration course, this paper revealsthe technical means to step up integtated geological research onzones and belts and raise operational quality and evaluation ofoil layers. As for the difficult areas, it is necessary to have anawareness of creativeness in geological study Meanwhile, thispaper also reveals that the subsag, if favorable for formation ofhydrocarbon source rock, can lead to industrial oil and gasabundance, of which the nearby oil sources in the direction ofmain oil and gas migration with stromatolith favorable to formlong-term successive structural high trap shoulbe the main tar-get for exploration breakthroughs.