Research On Hydrocarbon Accumulation Rules In Sudeerte Tectonic Zone Of Beier Depression

In connection with Bei 16 wellblock with oil reserves of high yielding and abundance ratio in Sudeerte tectonic zone of Beier depression in the Hailaer basin, data such as making use of core observation, microcosmic experiment, seismic interpretation and logging has been carried out after the data having carried out area is surveyed, and study such as gathering condition, preserving condition have been listed. On the basis of oil generation condition,reservoir condition,ascertaining condition,preserve condition, analysing the oil reserve type , analysis hides condition , building-up was carried out. gets the conclusion studying as follows:One, to use the data making use of curves such as sound density wave, and VSP to do logging makes the combining earthquake precis which does high-accuracy, the meticulous structure having been in progress makes an explanation. Beizhong depression is a later period type one, and north part is that succession develops, which has fairly good occurrence of oil condition, is to owe main area occurrence of oil the depression.Two, the Xing'anling group reservoir is middle porosity&permeability. To Budate group oil laye with double pore medium reservoir various methods forecasted is adopted. According to crack reservoir description, after core describes the sum core analysis data as basis, the normal well logging making use of routine well logging and imaging is handled making an explanation achievement, and combining with Schlumberger company technologies such as advanced small opening frequency analysis (PoroSpect) and rift quantify calculation procedure.Three, adopt reservoir inclusion to homogeneous-rization temperature and ledikite spontaneity K-Ar isotope measure annual and the light hydrocarbon of crude oil generating having ascertained Beier depression getting bogged down absolutely being three phases, it is after depositing Damoguaihe group,after depositing Yimin 1 group and after depositing Yiminzu group.Four, Beier depression have two set of main hydrocarbon source. The first set is Nantun 2 group, and second one is Damoguaihe 1 group. The Budate group and Damoguaihe 2 group can be the less important auxiliary hydrocarbon source set. According to threshold theory row hydrocarbon, cupped Beier depression hydrocarbon amounts are 2.81×108 tons.Five, takes that Budate supports as boundary, oil reserve forming the acient burial hill county taking acient weathering crust top shell as representative on the lower part; The remains strata Xing'anling group is fault-block structure oil gas oil reserve. The acient burial hill and their above Xing'anling group oil reserve is a main force of this area oil reserve.