Sand Body Prediction In Qian153-19-2Block Of Song-liao Basin

Qian153-19-2block belongs to Qianan oil field, Songliao basin. Its structurallocation belongs to a central depression Songliao Basin Changling sag North South-qian’an structure nose ramp area, and Its general structural shape is high east and lowwest. Survey is still under early evaluation, drilling scarce, prediction on thesand-body distribution is a crucial to deepening development and deployment.Thepaper toke full use of geologic, geophisical, drilling and formation testing data tomake a comprehensive prediction on the sand-body distribution of the target intervalscombined with reservoir forming condition of study area and drilling production.Ultimately preferred a favorable block and made the evaluation wells deployrecommendations.The main achievements and acquaintances are including:1. By the analysis on single well facies and connecting-well facies, determinedthe face type of study area is delta front facies, Which can be divided into fourmicrofacies, underwater distributary channel、channel mouth bar、sheet sand and theleading edge of the mud underwater.2. The paper integrated use of seismic attributes forecast, seismic inversionforecasts and the virtual logging data volume prediction method of combiningquantitative distribution of sand body forecast: work area west of sand bodies aremainly concentrated in the in the central and northwestern part, the sand bodythickness near the well Qian153-19-2is up to9.5m. Verification of the actualdrilling sand thickness prediction error of less than2meters higher, so the sandprediction is credible.3. According to the research, combined with reservoir forming condition of studyarea and drilling production. preferably out of the two favorable block: one located inthe northen region of well Qian153-11-2, the the other one located near the Qian153-11-2well. It is recommended that the western deploy two evaluation wells, isexpected to add utilization of geological reserves of44.82×104t.