伊通盆地梁家构造带浅层油气层录井解释评价  

Mud logging interpretation and evaluation for shallow oil and gas zones in Liangjia tectonic belt of Yitong Basin

作　　者：罗丙昌 吕振生[1] 姜丽[1] 

机构地区：[1]大庆钻探工程公司地质录井二公司

出　　处：《录井工程》2010年第1期39-42,共4页Mud Logging Engineering

摘　　要：伊通盆地梁家构造带浅层齐家组和万昌组储集层岩石埋藏浅、胶结疏松、含油岩屑随钻井液上返过程中油气逸失量大,造成岩屑录井油气显示级别低,给常规录井发现油气显示与解释评价油气层带来困难。针对此问题,结合浅层齐家组和万昌组油气特征和油质特点,尤其是氧化重质油特征,分析认为对于浅层齐家组和万昌组以产油为主的储集层应以岩石热解地化、岩石热解气相色谱、岩石物性分析为主,同时参照岩心、井壁取心、气测等进行解释评价;而对于浅层万昌组以产气为主的储集层应以气测录井为主,并结合岩心、岩屑显示级别以及岩石热解地化含油气总量进行解释评价。实例分析表明,该指导原则与解释评价思路不但在梁家构造带浅层解释评价中取得了理想的效果,而且对于类似储集层,尤其是氧化重质油储集层的解释评价具有重要的指导意义。The Second Mud Logging Company,Daqing Drilling & Exploration Engineering Cooperation,No. 789 Qingnian Street,Songyuan City,Jilin Province,138000,ChinaThe reservoir rock in the shallow layers of Qijia Group and Wanchang Group of Liangjia tectonic belt in Yitong Basin has the feature of buried shallow,loose consolidation and a large amount of the emergent gas and oil during the up returning of oil -bearing cuttings,which caused the lower showing level of the oil and gas in cutting logging and brought the difficulty for discovering oil and gas show in conventional mud logging and interpretation & evaluation of oil and gas. According to this issue,combining with the features of the oil and gas and the quality of the oil,especially with the features of the oxidized heavy oil in Qijia Group and Wanchang Group,the authors considered that the distinguishing and evaluation should mainly rely on rock pyrolysis geochemical,rock pyrolysis gas chromatographic and rock physical analysis and meanwhile according to well core analysis,gas logging and so on for the reservoirs which mainly produced oil in shallow layers of Qijia Group and Wanchang Group,while for the reservoirs which mainly produced gas in shallow layers of Wanchang Group it should mainly rely on gas logging and combining with core,cutting show levels and the oil and gas bearing amount in rock pyrolysis geochemical analysis. The practical application examples showed this guiding principle and the thought of the interpretation and evaluation not only obtained ideal effects in the interpretation and evaluation in the shallower layers in Liangjia tectonic belt,but it also has the important guiding meaning for the interpretation and evaluation of the similar reservoirs,especially for the reservoirs of the oxidized heavy oil.

关 键 词：梁家构造带 浅层 油气藏 氧化重质油 录井 储集层 解释评价 思路 

分 类 号：TE142[石油与天然气工程—油气勘探]