石油钻采工艺2023，Vol.45Issue(4)：441-446,6.DOI:10.13639/j.odpt.202110020
辽河海域高压气井月探1井套损补救固井技术
Cementing technology for casing damage remediation of Well Yuetan-1 in the offshore area of Liaodong Bay
胡晋军 1史为纪 1吴文兵 2李庆永2
作者信息
- 1. 天津中油渤星工程科技有限公司
- 2. 中国石油集团海洋工程有限公司钻井工程事业部
- 折叠
摘要
Abstract
Well Yuetan-1 is a high-pressure gas well in the offshore area of Liaodong Bay.During cementing of the third casing section,the Ø244.5 mm casing string was damaged and fractured at 1 238 m,which led to the sealing loss across high-pressure gas reservoir intervals from 2 626 m to 3 690 m.In order to effectively restore well integrity and meet the drilling requirements of the fourth casing section,a cement slurry system with low water loss,low flow resistance,high thixotropy and high channeling prevention capacity and thus suitable for cement squeezing operations was developed,according to the inspection results of the downhole cable camera and the downhole complex situation of Well Yuetan-1.A casing damage remedial cementing technology for high-pressure gas wells was formed,in which casing damage cracks are sealed by choke cement squeeze,and the high-pressure gas reservoirs are isolated by retainer cement squeezing and intermittent cement squeezing cement.After the treatment,the casing string was pressure-tested to 20 MPa with no pressure drop and no annular pressure,and the high-pressure gas reservoir was well sealed.The daily gas production in the trial production reached 19 000 m3/d.This technology and field application provide technical references for the treatment of similar complexities such as casing damage.关键词
套损治理/高压气井/固井/挤水泥/水泥浆/井筒完整性Key words
casing damage/high-pressure gas well/cementing/cement squeeze/cement slurry/well integrity分类
能源科技引用本文复制引用
胡晋军,史为纪,吴文兵,李庆永..辽河海域高压气井月探1井套损补救固井技术[J].石油钻采工艺,2023,45(4):441-446,6.
