Study On Fluid Identification Of Carbonate In Tahe Field

Carbonate reservoir is one of important types of hydrocarbon reservoirs. They form fracture, vugular pore space ,vug etc usually after the function of deposion , diagenesis, tectonism, karstification. The lateral and longitudinal characters are aeolotropism and anisotropy. All that made it to be difficult or inaccurate for evaluating reservoir and identifying fluid which are different with ones of shaly sand reservoirs. At present, the two difficult problems need to be set urgently, many experts try their best to set them by two ways. One is developing and applying modern logging technology, the other is seeking effective log interpretation on the base of conventional logging. According to the former needing abundant investment and not achieving prospective effect (for example, Tahe oilfield manager applied NML to identify fluid ) , the latter became the task which many scholars are studying. In order to conclude and summarize the characteristic of logging response to the reservoir space we made fully use of core analysis, borehole information ,FMI and conventional logging information about the reservoirs of lanlitager measures ,ijinfang measures, insan measures and ponlabo measures. Throung the study we came to the conclusion that the every measures have different pore types and the responses to the reservoir pore space are different for each measures. In the process of studying types of reservoirs, we analyzed the characteristic of conventional logging curve for more than fifty wells which had been measured and achieved credible logging information, and summarize the characteristic of the oil-gas reservoir and water reservoir. Finally, we think that the characteristic different is unobvious between the oil-gas and water because of the many elements such as structure...