摘要
X气田属于中国海上高产大气田,通过多年开采,气田后期见水严重,影响气田开发效果。受气田高温、压力系数低、海上措施费用高等影响,如何合理有效治水是气田开发后期遇到的一个难题。根据气田特点,从众多治水措施中有针对性地筛选了高部位侧钻、堵水、换管柱、补孔及降压开采等综合治水措施,取得了较好成效。总结出保证气井成功治水的四项关键技术,包括准确判别气井出水来源,选择最佳堵水层位,预测补孔效果和降压开采提高携液能力,为类似气田开发提供借鉴。
X is a high-yielding large offshore gas field in China.By almost 20 years' development,the gas field has been water invaded.Affected by high temperature,low pressure coefficient and high repair cost,it is a challenge to control water for the gas field at later stage.Comprehensive measures for water control have been selected among numerous measures such as side-track on the top reservoir,water plugging,changing tubing,re-perforating and depressurization development and remarkable effects have been obtained.Four key technologies for gas well water control were summarized during the process,which can distinguish the water breakthrough source,obtain best water plugging layer,forecast the re-perforating effect accurately and enhance fluid-carrying capability with ground technology.This technology provides references for development of similar gas field.
出处
《天然气与石油》
2016年第2期44-48,8,共5页
Natural Gas and Oil
基金
中海油"十二五"重大科技专项"海上大型砂岩气藏开发中后期综合治理及开发策略研究"(CNOOC-KJ 125 ZDXM06 LTD 04 ZJ 12)
关键词
见水井
高温低压
堵水
产能
降压开采
Water breakthrough well
High temperature and low pressure
Water plugging
Deliverability
Depressurization development
