CAJ | 학술논문

随着长庆油田精细分层注水试验的持续进行，低渗透油藏油层细分层注水工艺技术还需进一步提高。针对长庆靖安油田“厚油层、层内多小层”的油藏特点，通过分注工艺优化、工具研制及管柱组合优化等，实现从笼统注水、2层分注模式向多层小卡距的分注模式转化。改进后的多层小卡距分注工艺成功实现了百米内6级分注与更精细的分层，提高了低渗透油藏纵向多个小层的动用程度，从技术上解决了分注井层数限制与油藏开发需求之间的矛盾。
수착장경유전정세분층주수시험적지속진행，저삼투유장유층세분층주수공예기술환수진일보제고。침대장경정안유전“후유층、층내다소층”적유장특점，통과분주공예우화、공구연제급관주조합우화등，실현종롱통주수、2층분주모식향다층소잡거적분주모식전화。개진후적다층소잡거분주공예성공실현료백미내6급분주여경정세적분층，제고료저삼투유장종향다개소층적동용정도，종기술상해결료분주정층수한제여유장개발수구지간적모순。
As the stratified waterflooding test of Changqing Oilfield Company goes further,the stratified water flooding technology of low-permeability oil reserves needs to be improved.Ac-cording to characteristics of “thick oil layers with various mini-layers”of Changqing Jing’an Oil-field,technologies including layered water injection optimization,tool development and tube string combination optimization are used to fulfill non-stratified waterflooding and transformation from two-layer water injection into multilayer short-location injection mode.The improved multilayer short-location water injection successfully achieves 6-stage multilayer injection capacity within 100 m depth and finer stratification,improving the longitudinal producing level of multiple mini oil layers in the low-permeability oil reserves.This solves the technological contradiction between the number of multilayer injection well layers and demand on oil reserves exploration.