Relationship Between The Fracture Development Law And Hydrocarbon Distribution Rule Of Bedrock Buried Hills Of Beier Depression

Beier Depression has been one of the key areas for oil and gas exploration, Also is one of the main areas of Hailar Basin reserve. With the growing importance of buried hill, Everyone has noticed exploration of hydrocarbon of the bedrock buried hill sag in Beier depression. So far, the district has161drilling wells, Of which48wells have obtained industrial oil and gas flow, Sudheer oilfield is the only bedrock buried hill sag in Hailar Basin.bedrock buried hill of Beier Depression more than thirty drilling wells have been completed, of which the twenty eight wells have obtained industrial oil flow,and two wells produce productive oil flow. hydrocarbon of bedrock buried hill sag of Beier Depression mainly distributed in the structural high part of the Bei19, Bei38, Bei40, Bei28, Bei12, Bei14, Bei16and Bei30blocks.By use of the data,such as the core data, logging data, seismic data. By using of the finite element simulation method to "fracture zones associated with fault" and using curvature method to "fracture zones associated with folds". According to the formation of Nantun Formation in Beier sag fracture distribution prediction, points out the favorable area of buried hill development. Research results are as follows:The first:There are three types of reservoir in the bedrock buried hill of Beier depression: diagenetic fracture, structural fractures and pores. The main reservoir is Structural fractures, the main causes of fracture types of bedrock buried hill are the tectonic stress, denudation, weathering and denudation, diagenesis and so on.The second:The main control factors of fracture distribution of bedrock buried hill of Beier depression are mainly the lithology and fault.The third:The fracture type of bedrock buried hill of Beier depression is mainly structural fracture, the faults and folds has close relations with fracture distribution.The forth:Fracture zones associated with folds of Beier depression mainly distribute along the Bessie sub-depression, Huoduomore structural belt, Sudeerte oilfield belt and the Beizhong sub-depression.Fracture zones associated with fault of Beier depression mainly distribute along near south of the Bessie sub-depression, and central near the Sudheerte tectonic belt Bei43-Bei41Bei33-Bei30-Bei32line; southern of Sudheerte tectonic belt near well De6and East of well Bei50near, and Beizhong structure zone surrounding region.The fifth:Focus point of hydrocarbon exploration in Beier Depression in addition to the middle buried hill of Sudeerte structural zone, and the west of Sudeerte tectonic belt midwest of Bessie sub-depression.