摘要
由于以往仅仅依据构造资料,故在吐哈盆地鄯勒地区第三系部署的部分钻井相继落空,气藏规模和储量未能落实。目前的勘探实践表明,该区第三系浅层气藏并不是一个单纯的构造气藏,而是一个构造—岩性控制的复合型气藏。利用:1以地质、测井和地震资料为基础的地层和气层综合描述技术;2以多井、多方法的层位标定为基础,以人机交互综合解释为依据,以构造演化分析为检验的构造模型建立技术;3地震相、测井相和沉积相相结合的沉积模型建立技术;4高精度的储层反演技术;5地震沿层信息和AVO、Compak方法储层含气性预测等气藏综合描述技术,对吐哈盆地鄯勒地区第三系浅层气藏进行了综合描述,结果,查明了构造形态、构造特征、沉积微相分布与储层发育特征的关系,搞清了储集类型及特征以及储层各项参数(包括孔隙度、饱和度、渗透率、有效厚度、含气体积等),明确了气藏含气范围、驱动类型与圈闭类型,落实了气藏规模及地质储量。
Present exploration practice proves that Tertiary shallow gas pool is not a pure structural gas pool, but a composite gas pool in Shanle, Turpan Basin. Some well drillings continually failed previously. Consequently, gas pool scale and reserve is difficulty defined. This paper makes full use of following techniques to integrately describe Tertiary shallow gas pool in Shanle, Turpan Basin. The first is stratigraphy and gas zone integrated description technique based on geology, well logging and seismic data. The second is structural modeling building technique based on horizon calibration of multi-well and multi-method and integrated interactive interpretation and tested by tectonic evolution analysis. The third is sedimentary modeling building technique combined with seismic facies, well logging facies and sedimentary facies. The fourth is reservoir inversion technique of high resolution. The fifth is reservoir gas-bearing prediction technique used by seismic horizon information and AVO, Compark method. Structural forms and structural features are accurately defined. The relation of sedimentary microfacies distribution and reservoir features is made clear. Reservoir types and features and reservoir parameters including porosity, saturation, permeability, effective thickness and gas-bearing area are defined. Gas-bearing range and driving types and trap types of gas pool are defined. And gas pool scale and geological reserve are made sure. These techniques provide scientific proofs for gas pool exploitation in Shanle, Turpan Basin, and they provide methods and references for gas pool description in other field.
出处
《天然气地球科学》
EI
CAS
CSCD
2004年第1期62-67,共6页
Natural Gas Geoscience
基金
中国石油吐哈油田"鄯勒地区鄯勒3号构造第三系气藏描述"项目(编号:FS011201171)资助.
关键词
气藏描述
沉积
储层
含气检测
储量
Turpan basin
Gas pool description
Sedimentation
Reservoir
Gas-bearing detection
Reserve.
