石化技术
石化技術
석화기술
PETROCHEMICAL INDUSTRY TECHNOLOGY
2015年
4期
73-73,56
,共2页
复杂断块%鱼骨状分支水平井%优化设计
複雜斷塊%魚骨狀分支水平井%優化設計
복잡단괴%어골상분지수평정%우화설계
complex fault%fish-bone branched horizontal well%optimization and design
针对东辛油田营451断块东营组地震反射差、构造相对复杂、河流相沉积砂体平面分布稳定性差等难题，以精细油藏描述为基础，结合油藏地质特征，优选相邻两层D244、D245为目的层部署两分支鱼骨状水平井——营451-支平1。在综合考虑构造高度、含油高度、隔夹层分布等主控因素，分别对鱼骨水平井各支水平段长度、夹角、位置进行优化，有效地改善了区块的开发效果，大大挖掘了老区剩余油潜力。
針對東辛油田營451斷塊東營組地震反射差、構造相對複雜、河流相沉積砂體平麵分佈穩定性差等難題，以精細油藏描述為基礎，結閤油藏地質特徵，優選相鄰兩層D244、D245為目的層部署兩分支魚骨狀水平井——營451-支平1。在綜閤攷慮構造高度、含油高度、隔夾層分佈等主控因素，分彆對魚骨水平井各支水平段長度、夾角、位置進行優化，有效地改善瞭區塊的開髮效果，大大挖掘瞭老區剩餘油潛力。
침대동신유전영451단괴동영조지진반사차、구조상대복잡、하류상침적사체평면분포은정성차등난제，이정세유장묘술위기출，결합유장지질특정，우선상린량층D244、D245위목적층부서량분지어골상수평정——영451-지평1。재종합고필구조고도、함유고도、격협층분포등주공인소，분별대어골수평정각지수평단장도、협각、위치진행우화，유효지개선료구괴적개발효과，대대알굴료로구잉여유잠력。
The two branched fish-bone horizontal well,Ying-451-Zhiping1,is specifically dedicated for two selected layers,D244 and D245,based on detailed reservoir description and geological features of reservoir in terms of low quality seismic data,complex tectonic feature and high variable sand distribution caused by fluvial deposition in the Dongying formation,451 Fault,Dongxin Oilfield. The fish-bone branched horizontal well is optimized with respect to branch interval length,intersection angle,and position taking into account of factors such as tectonic height,oil height,distribution of interlayers and so on. It proves to be helpful in improving the development and potential stimulation in mature oilfield.
