Abstract: The marine oil-gas fields have undergone multistage petroleum accumulations and post-reconstructions. They should belong to quasi primary reservoirs for they are not typical primary reservoirs and clearly different from secondary reservoirs with marine-source and continental reservoir in nature. Therefore, carbonate rocks with irregular karst and fissure-cavity won't be named as reservoir rock or caprock rather than as reservoir body or sealing system. The irregular reservoir body can be divided into Naxi type, Tahe type and Renqiu type, in which developed extent of karst and fissure-cavity as well as connected degree between isolated reservoir bodies are in increase in order, including flow property, oil-gas-water contact and universal pressure system. Tahe reservoir is neither stratified and blocky, nor stratigraphic unconformity and weathered crust reservoirs. It is network-like reservoir in which oil-gas-water property, contact and pressure appear in obvious difference. There exist assemblages of multi-type reservoir bodies in Ackule salient and Tahe area. This uplift is of macro petroliferous property and inhomogenous feature. Well test and production test are main tools for evaluation of this type of reservoir, while acid fracturing deconstruction is a “conventional^v procedure in the exploration and development.

Key words: Tarim basin, uplift, Ordovician, carbonate rocks, oil-gas pool, type