文档介绍：渤南油田义37断块特低渗透油藏开发可行-眭研究王福霞(石油与天然气工程) 指导教师:姜瑞忠(副教授) 罗进先(教授级高工) 摘要渤南油田义37块沙三段5-9砂层组,油藏埋深3400-3700m, m:,80年代上报探明储量1005X101t,由于油减产能低,递减快,油井短时间内上返其它层系未建产能,目前开井4口, ,,%,%, 属于典型的双低单元。在借鉴国内类似油藏开发经验的基础上,利用油藏数值模拟、驱动压力梯度、技术极限井距等油藏工程方法,综合研究认为:该块储量基本落实,油井通过压裂改造可以达到经济开发极限,具有较大的开发动用潜力。根据不同方案筛选及对比,350m正方形反九点井网、井排方向与主地应力方向错开45。夹角比较适宜该单元。为了降低投资风险,按照开发沙三6、8砂组,攻关9砂组的基本思路,选择东南部的37—5一x2井组作为试验井组,按照弹性开采、试验注水开发两个阶段,进行试验井组注水先导试验。如果该区试验能够取得突破,必将为该区下步储量全面动用及同类油臧的开发提供实践依据和指导。关键词:特低渗透,注采方式,技术极限井距,试验,l:组 Study on thedevelopment feasibility ofultra-low permeable reservior yi-37 inbonan oilfield Wang Fu-xia(Oil&Gas Engineerin曲 Directed by Associate Processor Jiang Rui-zhong Senior Engineer Luo Jin-xian Abstract The 5-9 measures of Yi-37 reservior inBonan oilfield iS lOW permeable with permeability of "3pr02 and deposit depthof 3400— proved reserves oflow production capacity,high decease velocity and thereturning ofoilwellupto other zones in shorttime,the large scaleconstructionisunder going up tonow. Now,in Yi一37reservior,there isonly 4wells inproduction with the average oilproduction production isonly Reservior belongs totypical dual—low unitwiththeoil recovery %and oilrecovery %. Based on theexperience ofsimilarreserviordevelopment,reservior engineering methods,that is,numerical simulation,driving pressure gradient and technical limit spacing,are used to investigate the charaeteristiesof results indicate thatthe reveIse square9-spot isreliableandtheeconomical development limitationCan be reached by fracturing exploitation potential is parison ofdifferentprograms,reverse 9-points wellpattern with350m spacing ismore feasible optimum angle between well linedirectionand thedirectionofprinciple stress is45。. In order tominimize theinvestment risk,with thehelp ofbasic development thoughtf