Evaluation Of Unconventional Oil And Gas Resources In Liaohe Exploration Area

Unconventional oil and gas resources are also called continuous oil and gas accumulation in the early stage,which is considered to be an oil-bearing zone that is not related to tectonic traps.In 2010,Liaohe Oilfield began to carry out the study of shale gas,which formally opened the prelude to the unconventional oil and gas exploration.At present,Liaohe basin has been found wells industrial oil flow,and plan to the dense oil reserves in the "13th Five-Year" period.This study is based on the establishment of fourth evaluation of oil and gas resources.In the fourth evaluation of oil and gas resources,there are mainly unconventional oil and gas types including tight oil,tight sandstone gas,shale gas,natural gas hydrate,oil sand,oil shale and coalbed methane.At present,the primary oil and gas resources in the Liaohe exploration area are mainly tight oil,tight sandstone gas and Shale gas.According to the different types of unconventional oil and gas resources selection standards,analysis of the study area of high quality hydrocarbon source rock distribution,reservoir characteristics and reservoir forming conditions of the contact relationship of unconventional oil and gas resources optimization evaluation area,and then through the EUR analogy method,analogy method and classification of resource abundance of small surface element volume method of resources the amount of calculation.The difficulty of this work is to establish the evaluation criteria and optimize the favorable areas through high quality source rock,dense reservoir and source reservoir allocation.There are two innovative achievements in this study.First,we set up the criteria for the selection of unconventional oil and gas resources for Liaohe exploration area;two,we used various evaluation methods to calculate the unconventional oil and gas resources in Liaohe exploration area.In the process of computing resources,small surface method,resource abundance classification and analogy method and shale gas analysis technology are first applied to Liaohe area,forming three technological innovation points.