江苏油田复杂小断块油藏以水驱分层注水开发为主，目前采用智能分注来提升注采对应水平以提高采收率。由于采出井分层控制水平低，分层注水受效关系、受效程度认识不清，采油井层间干扰，单层突进，含水率上升快等问题突出，为注采协同缓解高含水期层间与平面矛盾，减少无效水循环，控制采油井含水率上升，研发了有缆智能分层采油技术。通过筛选适应井下高温、高压、腐蚀及结垢环境的流量、含水率、压力、温度传感器，选用可靠的分层流量调节开关及控制技术，合理设计组件空间布局及分层配产器整体机械结构，选用不同的双向传输电缆及连接技术，开发配产器控制电路及地面集成控制系统，优化配套井下分层采油管柱，降低工具及实施成本，实现了井下分层生产参数的实时连续监测及对分层配产器的无线远程调控。现场开展了单层轮采、分层配产、耦合调整试验，证实了试验前油藏动态分析结论，验证了智能分层采油工具及管柱性能，实现注采耦合联动、增油控水和分层测调，试验井含水率下降38.8%。该技术的应用可为油藏精细地质分析与挖潜提供依据，大大提高了油田采油智能化水平。

The complex small fault block oilfields in Jiangsu are mainly developed through waterflooding with stratified injection. Currently, intelligent stratified injection is applied to improve injection-production coordination and enhance recovery efficiency. Due to the low level of stratified control in production wells and the unclear understanding of the relationship and degree of effectiveness of stratified water injection, issues such as interlayer interference in production wells, single-layer water breakthrough, and rapid water cut increases are prominent. To achieve injection-production coordination, alleviate interlayer and areal contradictions during the high water cut period, reduce ineffective water cycling, and control the rise in water cut of production wells, a cabled intelligent stratified oil production technology was developed. Flow rate, water cut, pressure, and temperature sensors suitable for the high-temperature, high-pressure, corrosive, and scaling-prone downhole environment were selected. Reliable stratified flow control devices and control technologies were adopted, and the spatial layout of components and overall mechanical structure of the stratified production allocator were optimally designed. Different bidirectional transmission cables and connection technologies were selected, the control circuits of the production allocator and a ground-integrated control system were developed, and the supporting downhole stratified oil production strings were optimized. Tool and implementation costs were reduced, enabling real-time continuous monitoring of downhole stratified production parameters and wireless remote control of the stratified production allocator. Field tests, including alternating single-layer production, stratified production allocation, and coupled adjustment, were conducted. The tests confirmed the conclusions of pre-test reservoir dynamic analysis and verified the performance of the intelligent stratified oil production tools and strings. Injection-production coupling, enhanced oil production, water cut control, and stratified measurement and adjustment were achieved, with the water cut of the test well reduced by 38.8%. The application of this technology can provide a basis for fine geological analysis and potential exploration of oil reservoirs, significantly enhancing the intelligent level of oilfield production.