Combined connecting rock core model pipe

The utility model discloses a combined connecting rock core model pipe used for a laboratory in the petroleum industry, which comprises rock core model pipes. A sampling hole opening and a pressure hole are formed on each rock core model pipe respectively, and the rock core model pipes are connected and assembled through a connecting pipe; after the rock core model pipes are connected and assembled through the connecting pipe, the combined connecting rock core model pipe meets the spatial requirement of a thermostat; and the connecting pipe is connected with the rock core model pipe in a flange sealing manner, grooves are formed in the end surfaces of two connecting ends of the connecting pipe respectively, and sealing rings are arranged in the grooves, so that close connection between the connecting pipe and the shorter rock core model pipe is ensured. The length of the rock core model pipe can be obtained by changing the number of the connected shorter rock core model pipes according to the demands of test; the combined connecting rock core model pipe meets the demands of test on the long rock core model pipes at high temperature and can be used for various physical simulation experiments (such as improvement of indoor recovery ratio, water shutoff and the like) in the petroleum industry, is convenient for filling the quartz sand and provides great convenience for processing and manufacturing the stimulation rock core.