CAJ | 학술논문

滩坝砂是港中复杂断块油田沙一段重要储集层，滩砂和坝砂在砂体厚度及后期产能方面差异明显。为揭示港中油田富油砂体复杂的分布特征及控油模式，从动静态资料入手，逐次重点分析区内砂体、有效储层、油砂体的纵横向分布变化，引入并界定港中油田富油砂体概念、标准。研究认为，港中油田滩坝砂富油砂体具地质储量大，单井日产高，原始地层压力高、稳产时间长的特点。纵向上主要分布在板3油组和滨Ⅰ油组等5个主力单砂层，平面上主要分布在南四断块、北三断块。探讨了复杂断块油气田富油砂体分布受控因素及分布模式，指出沉积相控、成岩控油、断层控油、微构造控油及构造-岩性控油是港中油田滩坝砂油气富集5种主要控油模式。
탄패사시항중복잡단괴유전사일단중요저집층，탄사화패사재사체후도급후기산능방면차이명현。위게시항중유전부유사체복잡적분포특정급공유모식，종동정태자료입수，축차중점분석구내사체、유효저층、유사체적종횡향분포변화，인입병계정항중유전부유사체개념、표준。연구인위，항중유전탄패사부유사체구지질저량대，단정일산고，원시지층압력고、은산시간장적특점。종향상주요분포재판3유조화빈Ⅰ유조등5개주력단사층，평면상주요분포재남사단괴、북삼단괴。탐토료복잡단괴유기전부유사체분포수공인소급분포모식，지출침적상공、성암공유、단층공유、미구조공유급구조-암성공유시항중유전탄패사유기부집5충주요공유모식。
Lacustrine beach-bar sand is one of the important reservoir types in GangZhong complex fault block oilfield, and beach-bar sand have obvious differences in the thickness and the later sand production. In order to reveal the distribu-tion pattern of oil sands, this paper Sequentially analyzes the distribution changes from sandbody, reservoir sand, and oil-sands, basing on dynamic and static data. The concept and standard of“oil rich sand body”are put forward firstly in this paper . And the vertical and plane distribution of the rich oil sand body is illustrated. It suggest that the rich oil sand body has the big geological reserves, producing high, original formation pressure high, stable for a long time. Lastly, the pat-tern and factor of oil-control is analyzed and summarized, and the fault, micro structure,sedimentary facies,diagenesis, and various factors coupling relationship are the key distribution patterns in GangZhong oilfield .