The Research Of Logging Recognition Method Of Reservoir On Chang-6 Period In Bai-155 Area

The reservoir of bai-155 area belongs to contact reservoir,which is controlled by sedimentation,diagenesis and reservoir forming geologic process.For the difference of micro factors,such as reservoir pore structure,degree of cementation and fluid component etc and the aeolotropism are more powerful,the phenomenon of water production in high resistance in the local area is exist.Thus it is unable to identify the oil-water layer with the conventional chartboard.This context introduces the characteristics of oil-water layer in the area,using the micro grid area recognition,the apparent resistivity ratio and double coefficient intersection chart method,combined with sedimentary facies and diagenesis to identify the oil-water layer and compare the practicability of each method,which improve the recognition accuracy sharply and solve the complex problem of oil water relationship in the research area,At the same time achieving the following understanding:(1)The stratum of chang-6 period in bai-155 area is stability,which mainly develops the clastic slump turbidite fan sedimentary system;the reservoir interstitial compounds are totally based on the chlorite and fine sands,also being moderate sorting,pore cementation,lower face rate,the pore type dominated by small pore and micro fine throat and general pore structure.(2)The reservoir of chang-6 period in research area belongs to contact reservoir,which is controlled by sedimentation,diagenesis and reservoir forming geologic process.For the difference of micro factors,such as reservoir pore structure,degree of cementation and fluid component etc and the aeolotropism are more powerful,the dry layer of electrical characteristics producing bound water after fracturing layer.(3)According to the results of oil testing and geological knowledge,the target zone is devided for four areas.And on the basis,many measures are used to identify the oil-water layers and establish identification standard of oil-water recognition in each region,such as micro grid plate recognition method,the apparent resistivity ratio method,double coefficient intersection chart method,nuclear magnetic resonance logging movable fluid identification method.