Research advances on the mechanisms of reservoir formation and hydrocarbon accumulation and the oil and gas development methods of deep and ultra-deep marine carbonates  

作　　者：MA Yongsheng CAI Xunyu LI Maowen LI Huili ZHU Dongya QIU Nansheng PANG Xiongqi ZENG Daqian KANG Zhijiang MA Anlai SHI Kaibo ZHANG Juntao 

机构地区：[1]China Petroleum and Chemical Corporation,Beijing 100728,China [2]State Energy Key Laboratory for Carbonate Oil and Gas,Beijing 102206,China [3]Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 102206,China [4]College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China [5]School of Earth and Space Sciences,Peking University,Beijing 100871,China

出　　处：《Petroleum Exploration and Development》2024年第4期795-812,共18页石油勘探与开发（英文版）

基　　金：Supported by the National Natural Science Foundation of China;Corporate Innovative Development Joint Fund(U19B6003)。

摘　　要：Based on the new data of drilling, seismic, logging, test and experiments, the key scientific problems in reservoir formation, hydrocarbon accumulation and efficient oil and gas development methods of deep and ultra-deep marine carbonate strata in the central and western superimposed basin in China have been continuously studied.(1) The fault-controlled carbonate reservoir and the ancient dolomite reservoir are two important types of reservoirs in the deep and ultra-deep marine carbonates. According to the formation origin, the large-scale fault-controlled reservoir can be further divided into three types:fracture-cavity reservoir formed by tectonic rupture, fault and fluid-controlled reservoir, and shoal and mound reservoir modified by fault and fluid. The Sinian microbial dolomites are developed in the aragonite-dolomite sea. The predominant mound-shoal facies, early dolomitization and dissolution, acidic fluid environment, anhydrite capping and overpressure are the key factors for the formation and preservation of high-quality dolomite reservoirs.(2) The organic-rich shale of the marine carbonate strata in the superimposed basins of central and western China are mainly developed in the sedimentary environments of deep-water shelf of passive continental margin and carbonate ramp. The tectonic-thermal system is the important factor controlling the hydrocarbon phase in deep and ultra-deep reservoirs, and the reformed dynamic field controls oil and gas accumulation and distribution in deep and ultra-deep marine carbonates.(3) During the development of high-sulfur gas fields such as Puguang, sulfur precipitation blocks the wellbore. The application of sulfur solvent combined with coiled tubing has a significant effect on removing sulfur blockage. The integrated technology of dual-medium modeling and numerical simulation based on sedimentary simulation can accurately characterize the spatial distribution and changes of the water invasion front.Afterward, water control strategies for the entire life cycle of gas well

关 键 词：deep and ultra-deep marine carbonate mechanisms of hydrocarbon accumulation reef-beach facies high-sulfur sour gas reservoirs ultra-deep fault-controlled fractured-cavity reservoir wellbore sulfur deposition fluid-solid-thermal numerical simulation 

分 类 号：TE53[石油与天然气工程—油气田开发工程]