Research on Microscopic Pore Structure Characteristics and Producibility of the Chang 9 Reservoir in the Wucangpu Block

The pore structure can affect the storage and flow properties of rock, which is an important research content in study unconventional tight reservoirs. This hopes to clarify reservoir characteristics fluid seepage mechanism Chang 9 Wucangpu block provide technical support for development horizontal wells with staged fracturing this block. In paper, microscopic producibility area are analyzed detail by means constant-rate mercury intrusion nuclear magnetic resonance. results show that permeability less than 0.076 mD mainly composed microthroat, 0.208-0.633 has a larger proportion microthin throat, 2.722-3.998 fine-middle throats. oil/gas rock sample reservoirs greater 1.0 easy produce.