CAJ | 학술논문

垦71开发区块的主要产油层系为新近系的馆陶组河流相和古近系的东营组三角洲相地层,具有被断层复杂化的多油水系统.该区井网密集,储层厚度薄,横向关系复杂,储层与非储层速度差异小,后续开发方案调整所要求的精细储层描述难度较大.本文展示了以精细储层描述为目标的地震约束反演实例,利用多井地震、地质标定,结合三维构造解释成果,建立三维多断层精细约束地质模型.在此基础上,采用随机地震反演方法,进行了波阻抗、岩性等多种地层参数反演,较好地解决了该区薄互层储层精细描述问题,证实了精细储层反演技术在油田开发中的重要作用.
은71개발구괴적주요산유층계위신근계적관도조하류상화고근계적동영조삼각주상지층,구유피단층복잡화적다유수계통.해구정망밀집,저층후도박,횡향관계복잡,저층여비저층속도차이소,후속개발방안조정소요구적정세저층묘술난도교대.본문전시료이정세저층묘술위목표적지진약속반연실례,이용다정지진、지질표정,결합삼유구조해석성과,건립삼유다단층정세약속지질모형.재차기출상,채용수궤지진반연방법,진행료파조항、암성등다충지층삼수반연,교호지해결료해구박호층저층정세묘술문제,증실료정세저층반연기술재유전개발중적중요작용.
In the Ken 71 development block, fluvial facies of the Neogene Guantao Formation and delta facies of the Paleogene Dongying Formation are the main pay beds. It is a multiple oil and water system which is complicated by faults. Characteristics of the block include a dense well network, thin reservoirs, complicated horizontal relationships,and small velocity difference between reservoir and non-reservoir. Therefore, it is difficult to conduct detailed reservoir description for subsequent development project adjustment.We demonstrate a stochastic seismic inversion which aims at detailed reservoir description.It is a technology which utilizes multiple wells, seismic data, and geological calibration and integrates with 3D structural interpretation results to build a 3D multi-fault detailed and constrained geological model. On this basis, we adopted stochastic seismic inversion to conduct a multi-stratum parameters inversion such as impedance and lithology. As a result,thin interbedded strata in the block were well resolved and the results demonstrated the importance of detailed reservoir inversion for oilfield development.