西莎气田碳酸盐岩气藏储层评价及刻画

Reservoir evaluation and characterization of carbonate gas reservoirs in Xisha gas field 

徐士鹏 卢志明 热合麦提·亚尔麦麦提 王成林 艾尼·买买提 张庆伟 崔保生

中国石油新疆油田分公司勘探开发研究院，新疆 克拉玛依 834000 中国石油国际勘探开发公司
乌兹别克斯坦新丝绸之路石油天然气合资有限责任公司，天津 300000

Exploration and Development Research Institute, Xinjiang Oilfield Company, PetroChina, Karamay 834000, China Uzbekistan New Silk Road Oil and Gas Joint Venture Co., Ltd., International Exploration and Development Corporation, PetroChina,
Tianjin 300000, China

阿姆河盆地西莎气田碳酸盐岩气藏目的层（上侏罗统卡洛夫￣牛津阶）岩性多样，储集空间类型复杂，孔、缝发育，研究区岩性识别、储层物性解释困难。本次研究，基于岩心和测井资料，准确识别出了碳酸盐岩储层岩性；建立了研究区储层物性解释模型，评价了碳酸盐岩气藏储层特征；利用裂缝指示曲线，确定了有效裂缝发育段；采用波形指示波阻抗反演技术，预测了有利储层发育范围。研究得出：研究区分为4大类12种岩性类型，明确了裂缝对储层的影响大；预测出储层整体较为发育，确定研究区内存在一个由东南向西北延伸的致密岩性带，对气水的分布起一定封隔阻挡作用。研究成果对同类型气田的开发具有积极的指导作用。

Carbonate gas reservoirs in the Xisha gas field in the Amu Darya Basin have diverse lithology, complex storage spaces, and well-developed pores and fractures, making it difficult to identify lithology and interpret physical properties of the reservoir. This study identified carbonate reservoir lithology based on core and logging data, established a carbonate rock physical property interpretation model, and evaluated carbonate gas reservoirs; the fracture indication curves were used to determine the effective fracture development section; the waveform indication wave impedance inversion technology was used to predict the favorable reservoir development range. This study summarized 12 types of lithology in 4 major categories, and the fractures have more influence on the reservoir. It is predicted that the whole reservoir is more developed. It is confirmed that there is a tight lithologic zone extending from southeast to northwest in the area, which plays a certain role in blocking the distribution of gas and water. The research results have a positive guiding effect for the development of the samilar gas fields.

10.6056/dkyqt202205015