大庆石油地质与开发2018，Vol.37Issue(2)：88-95,8.DOI:10.19597/J.ISSN.1000-3754.201709007
压裂水平井裂缝和水平井筒不规则产油试井分析
WELL TEST ANALYSES OF THE NON-UNIFORM OIL PRODUCTION FROM THE FRACTURED HORIZONTAL WELL FRACTURES AND ITS WELLBORE
摘要
Abstract
In the light of the problem of the non-uniform oil production of the multi-fractured horizontal well (MFHW),on the basis of the production from the wellbore and fractures and further considering the variable-mass flow of the fractures,with the help of Green's function,Newman's product method and superposition principle,the well test model was established for the more actual non-uniform oil production from the MFHW's fractures and the wellbore,through Stehfest numerical inversion,the real-space pressure solutions were obtained in the consideration of the wellbore storage and the skin effect,the typical chart board was mapped and furthermore the influences of the flow rate of the wellbore production segments/intervals,the length of the oil-producing segment and the fracture parameters on the bottomhole pressure response were analyzed.The contrast in the flow characteristics was considered between the uniform/simultaneous production of the fractures and wellbore segments (UPFWS) and non-uniform production of the fractures and wellbore segments (NPFWS:only considering the production from the fractures) i.e.the former added the first linear and bilinear flow stages.The influences of the segment flow rate,fracture number and its half-length on the pressure and pressure derivative are rather serious;while the influences are pretty small for the production segment length on the typical curves.The model can be applied in the evaluation and diagnoses of the effective-oil-production fractures and horizontal wellhole segments for the MFHW,and furthermore the programs of removing the block or re-fracturing can be specifically compiled.关键词
多段压裂水平并/不规则产油/裂缝变质量流/试井分析/典型图版Key words
multi-fractured horizontal well (MFHW)/non-uniform oil production/fracture variable-mass flow/well test analysis/typical chart board分类
能源科技引用本文复制引用
秦佳正,程时清,何佑伟,于海洋,史文洋..压裂水平井裂缝和水平井筒不规则产油试井分析[J].大庆石油地质与开发,2018,37(2):88-95,8.基金项目
“十三五”国家科技重大专项(2017ZX05013001-005) （2017ZX05013001-005）
中国石油大学(北京)青年创新团队C计划(C201605). （北京）
