Research of the Relationship between Characteristics of Carbonate Fracture-Cave Unit and Fluids Producing Status - A Case Study in Well Block ZG7 in North Slope of Tazhong Uplift

Abstract:

Carbonate reservoir is one of the main controlling factors of hydrocarbon accumulation. But the exploration proved that high-quality reservoir and commercial hydrocarbon flow had no absolute corresponding relationship, high-quality reservoir just was the necessary condition of hydrocarbon accumulation. It was found that local construction highs had an important control function to hydrocarbon accumulation. So it has a realistic guiding significance to exploration that enhancing the detailed study on carbonate fracture-cave unit. This paper selected Well Block ZG7 with complex oil-water relationship as a case, and comparative analyzed the structural position, structural characteristics, reservoir characteristics and fluid producing status before and after acid fracturing. It indicated that structural position of fracture-cave unit had a crucial control function to the fluid property in it, whose high accumulated hydrocarbon and the low was water commonly. The structure of facture-cave unit had a close relationship with the fluid producing status, which differed from the variation of fracture-cave unit structure. Carbonate reservoir and local construction were the important controlling factors of hydrocarbon accumulation, under the background of high-quality reservoir, local structures and structural highs were the favorable accumulation areas.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 1537-1542
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.1537
• Online since: May 2012
• Authors: Wei Wei Jiao, Jie Zhang, Li Jun Cheng, Dan Dan Liu, Zhi Deng
• Keywords: Carbonate Reservoir, Facture-Cave Unit, Local Structures, North Slope of Tazhong Uplift, Tarim Basin

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