Study On The Effective Reservoir And Its Oil Bearing Logging Characteristics Under Different Geological Conditions

Big emotion Wells in Jilin oilfield area is favorable oil-bearing zones in southern pine south basin,with years of exploration and development,the deepening of exploration degree,well pattern gradually encryption,technical level has a large degree of increase,the lithology and fluid interpretation standard before the contradiction appear ceaselessly,bring greater difficulty of oilfield exploration and development.Jilin oilfield will be carried out at the same time,in order to meet the old well try oil,add perforation,advantageous area optimization such as the needs of work,the lithology and fluid standard on the basis of predecessors' further perfect is particularly important.By using the principle of Coring well,By zoning and layering establishing the qn1 ?qn2 ?qn3 lithology standard.Qn3 ? sand group area? lithology standard are: siltstone,GR<91API,225?s/m<AC;Calcium siltstone: GR<91API,206?s/m <AC<225?s/m;Pelitic siltstone AC>224?s/m,91API<GR<110API;Mudstone: GR>110API,AC>224?s/m.Area ? lithology standard are:siltstone: GR<93API,AC>219?s/m;Calcium siltstone: GR<93API,AC<219?s/m;Pelitic siltstone 93API<GR<113API,AC>226?s/m;Mudstone and silty mudstone: GR>113API,AC>232?s/m.Area ? lithology standard are: siltstone,AC>215?s/m,GR<92API;Calcium siltstone: GR<96API,195?s/m <AC<208?s/m;Pelitic siltstone 93API<GR<113API,AC>226?s/m;Mudstone and silty mudstone: AC>231?s/m,GR>109API.Qn2 lithology standard are: ?-? sand group siltstone GR<96API,AC>208?s/m;Calcium siltstone GR<96API,195?s/m <AC<208?s/m;Pelitic siltstone 96API<GR<110API,AC>193?s/m;Mudstone and silty mudstone: GR>110API,AC>209?s/m;?-? sand group siltstone GR<101 API,AC>216?s/m;Calcium siltstone GR<101 API,200?s/m <AC<216?s/m;Pelitic siltstone101API<GR<112API,AC>200?s/m;Mudstone and silty mudstone GR>112API,AC>208?s/m.Qn1 lithology standard are: siltstone GR<103API,AC>200?s/m;Pelitic siltstone GR<107API,AC>200?s/m;Mudstone and silty mudstone GR>117API,AC>202?s/m.In the fluid interpretation standard,according to the plane distribution of the salinity of formation water,direction and the content of pyrite in the reservoir,in the vertically according to the limit of the sand group to partition to establishing the fluid identification standard.In the Qn3,the fault of the upper dip fault and the footwall of the footwall without fault are the main factors affecting the fault;The main trap types of oil traps in Qn2? sand formation are reverse normal faults,and upper dip traps trap oil traps.The reservoir types of the first and third sand formation in Qn1 are mainly lithologic strike out,lateral fault block and lateral fault shielding.