石油钻采工艺Issue(2)：16-18,3.DOI:10.13639/j.odpt.2014.02.004
哈萨克斯坦H8309双分支水平井钻完井技术
Drilling and completion technology for dual branch horizontal well H8309 of Khasakstan
李虎 1王海涛 1董孟坤 1汪华成 1包成虎1
作者信息
- 1. 中石油长城钻探工程技术研究院分支井技术研究所，辽宁盘锦 124010
- 折叠
摘要
Abstract
The Kenkiyak Oilifeld in Kazakhstan is one of the world-recognized blocks dififcult to be produced. This block has small individual-well oil control area and high developmentcosts. Therefore, it is determined that the technical dififculties in this Block be tackled by branch well drilling technologies. Well H8309 is the ifrst overseas dual branch horizontal well of PetroChina, which has the deepest sidetracking point among overseas dual branch hozizonal wells.In order to overcome high pressure in deep wells and ensure wellbore stability, high density drilling lfuid (1.98 g/cm3)was used in this well;in order to reduce well control risks, this well used the sectional whipstock ifshing technology for branch wells and completion string release technology for deep branch wells for the ifrst time. The dual branch holes were both acid fractured. The H8309 Well lfowed at a rate of 180 tons of oil a day and maintained smooth produc-tion for 138 days, which is three times of daily production of adjacent horizontal wells. The success in this well provides experiences for the efifcient development of dififcult blocks, provides new approaches to the development of oil and gas in Kenkiyak oil province and provides strong support for developing faulted edge reservoirs, improving oil recovery and reducing development costs.关键词
H8309双分支水平井/难开发区块/低成本/钻完井技术Key words
H8309 dual branch horizontal well/low cost/well drilling and completion technology分类
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李虎,王海涛,董孟坤,汪华成,包成虎..哈萨克斯坦H8309双分支水平井钻完井技术[J].石油钻采工艺,2014,(2):16-18,3.
