塔河油田超深裸眼井段垮塌预测模型构建  

CONSTRUCTION OF COLLAPSE PREDICTION MODEL FOR ULTRA DEEP HOLE IN TAHE OILFIELD

作　　者：梁志艳[1] LIANG Zhi-yan(Northwest Oilfield Company,SINOPEC,Luntai,Xinjiang 830011,China)

机构地区：[1]中国石化西北油田分公司,新疆乌鲁木齐830011

出　　处：《新疆石油天然气》2021年第2期73-77,I0005,共6页Xinjiang Oil & Gas

摘　　要：塔河超深缝洞型油藏储集体发育复杂,井周存在储量规模不均的分隔体储层,主要通过酸压改造实现近井沟通。由于特殊的油藏地质条件和生产方式导致裸眼段频繁垮塌砂埋。文章通过对生产层段垮塌出砂影响因素进行敏感性分析,提出了一种出砂预测决策树模型。按此方法,对已出砂的89井次进行期望值计算,预警准确率达到89%,该预测模型较符合实际情况,可应用于油井出砂预测,指导现场生产调整,改善油井垮塌现状。The Tahe Oilfield is an ordovician carbonate fractured-vuggy heavy oil reservoir,the completion method is mainly open hole acid fracturing.Due to the special reservoir geological conditions and mode of production,the open hole section fre⁃quently collapses and the sand is buried.In this paper,a decision tree model for sand production prediction is proposed based on the main analysis of factors affecting sand production in production interval collapse.In this way,the expected val⁃ues of 89 wells with sand produced are calculated,the early warning accuracy reached 89%.The prediction model accords with the actual situation,it can be used in sand production prediction of oil well,direct on-site production adjustment,im⁃proving the status of oil well collapse.

关 键 词：塔河油田 超深 裸眼井段 垮塌 出砂 预测模型 

分 类 号：TE358[石油与天然气工程—油气田开发工程]