| The evaluation and application of fracture type reservoir are one of the most significant research subjects of petroleum exploration and development nowadays. With the decreasing of routine porosity hydrocarbon-bearing pools and more difficult to develop them,the direction of some important parts of petroleum exploration has changed to fractured reservoir.lt has the character of hard to predict and high productivity,and brings to people’s more and more attention.Based on the background,this text first statistics and analyzs the character of fracture,dissolved pore and cave from the materials of core and FMI.Then builds the model of different types reservior according to the characters of porosity,permeablity and fracture.After that,combining with the evaluation of reservior inhomogeneity,we can build single well and two dimensional geology models which connect the seismic,well logging,geology and other hydrocarbon related disciplines.After we bulid the geology models,we can have an accurate evalution of reserch area’s fracture element and favorable reservoir zone,and then guide the prediction of the distribution of hydrocarbon.Under the direction of above thread,we try to evaluate the fractured reservior of well 83 block of NO.1 gas field in Tarim basin and reach the following conclusion:(1) Make 26 core well’s reservior generalized geological section,and the results show that it has a big variation and haterogeneity between different well zone and reservior.(2)TZ83 wellblock’Liangwu-Yingshan rock formation is mainly fracture-type reservior.(3) Make a new evaluation standard of Ordovician reservior and divide the reservior into 4 grade.TZ83 well block is mainly gradeⅠreservior and spead over near top interface of Yingshan rock formation.(4)Based on the analysis of connectivity among wells,confirm the principle and standard of fracture and cave elements division.TZ83 wellblock is divided into 5 fracture and cave elements. |
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