石油钻采工艺2017，Vol.39Issue(2)：207-211,5.DOI:10.13639/j.odpt.2017.02.015
迪那2气田测射联作完井工艺评价与优化
Evaluation and optimization on the well completion technology of combined testing and perforating in Dina 2 Gasfield
摘要
Abstract
Combined testing and perforating technology is advantageous for it can diminish tripping operation, reduce reservoir damage and improve oil and gas well construction efficiency. The well completion technology of combined logging and perforating without releasing the gun was commonly used in the early stage of productivity construction in Dina 2 Gas Field. After its commis-sioning, however, some problems occurred gradually, such as wellbore plugging and restricted downhole performance monitoring, so it is necessary to evaluate and optimize this technology. Investigation and statistics show that the abnormal phenomenon of sharp tubing pressure drop appears in 75% of production wells which are completed by means of combined logging and perforating technology in the early stage of productivity construction. This abnormal tubing pressure was analyzed based on gas reservoir engineering theories and workover practices. And it is indicated that its essential cause is that the holes of production screens (i.e., holed tubing) at the end of combined testing and perforating string are blocked due to plugging agent flowback and formation sand production. To solve this problem, perforating and testing is carried out by stages in the middle and late period of productivity construction. Consequently, thephenomenon of wellbore plugging is reduced, and it is favorable for the implementation of production performance monitoring. The application of this optimized well completion technology in Dina 2 Gas Field can be used as the reference for similar gas fields. Before the well completion technology of combined testing and perforating, it is necessary to carry out sufficient adaptability evaluation and specific modification and optimization.关键词
射孔/试油/完井/一体化管柱/井筒堵塞Key words
perforating/production test/well completion/integrated string/wellbore plugging分类
能源科技引用本文复制引用
胡素明,王好,肖香姣,陈宝新,张永宾..迪那2气田测射联作完井工艺评价与优化[J].石油钻采工艺,2017,39(2):207-211,5.基金项目
国家科技重大专项"塔里木盆地库车前陆冲断带油气开发示范工程"(编号:2011ZX05046-03)、中国石油股份公司重大科技专项"前陆冲断带超深超高压气藏开发技术"项目(编号:2014E-2104). （编号:2011ZX05046-03）
