西南石油大学学报(自然科学版) ›› 2023, Vol. 45 ›› Issue (6): 113-124.DOI: 10.11885/j.issn.1674-5086.2022.09.08.01

• 石油与天然气工程 • 上一篇    下一篇

高磨台缘带灯影组气藏气井堵塞机理及治理对策

陈林, 吕亚博, 欧家强, 张坤, 李娟   

  1. 中国石油西南油气田分公司川中北部采气管理处, 四川 遂宁 629000
  • 收稿日期:2022-09-08 发布日期:2024-01-06
  • 通讯作者: 陈林,E-mail:chenlinpost@petrochina.com.cn
  • 作者简介:陈林,1983年生,男,汉族,四川南充人,高级工程师,博士,主要从事油气田开发和管理等方面的研究工作。E-mail:chenlinpost@petrochina.com.cn;吕亚博,1985年生,男,汉族,陕西宝鸡人,工程师,主要从事油气田开发工艺技术研究。E-mail:lvyabo_cq@petrochina.com.cn;欧家强,1979年生,男,汉族,四川三台人,高级工程师,主要从事开发地质与油气藏工程等方面的研究工作。E-mail:oujiaqiang01@petrochina.com.cn;张坤,1983年生,男,汉族,四川西充人,高级工程师,主要从事采气工程管理方面研究工作。E-mail:zhangkuncn@petrochina.com.cn;李娟,1988年生,女,汉族,四川简阳人,工程师,主要从事油气田开发方面的研究工作。E-mail:lijuan_ji@petrochaina.com.cn

Plugging Mechanism and Treatment Measures of Dengying Formation Gas Reservoir in Gaoshi-Moxi Platform Margin Belt

CHEN Lin, Lü Yabo, OU Jiaqiang, ZHANG Kun, LI Juan   

  1. North Part of Central Sichuan Gas Production Management, PetroChina Southwest Oil and Gas Field Company, Suining, Sichuan 629000, China
  • Received:2022-09-08 Published:2024-01-06

摘要: 高磨台缘带灯影组气藏自投产以来,多口气井在生产过程中先后出现不同程度的堵塞现象,表现为井口、井筒及地层堵塞多种复杂形式,严重制约了气井正常平稳生产。对堵塞物样品采用酸溶、红外光谱、能谱电镜、X衍射及色相色谱-质谱等分析手段,认为堵塞物主要成分基本相同,不同气井的堵塞物成分存差异较小;同时,全面摸排地质特征、完井方式、入井液等关键基础资料,进一步确定堵塞物来源及形成机理。在此基础上,根据气井不同堵塞程度及堵塞类型,分别配套了针对井筒未完全堵塞的泵注油污清洗型有机解堵剂工艺、井筒堵死的连续油管冲洗工艺及针对地层堵塞的酸化解堵工艺措施。高磨台缘带灯影组气藏12口气井应用以上工艺技术进行了解堵作业,日恢复气量145×104 m3,经济效益显著。形成了适用于灯影组气藏的气井堵塞治理技术系列,可在同类型含硫气田推广应用。

关键词: 高磨台缘带, 堵塞, 有机解堵剂, 酸化解堵, 连续油管解堵, 捕屑器

Abstract: Since the gas reservoir of the Dengying Formation in Gaoshi-Moxi platform margin belt was put into production, many gas wells have been blocked to varying degrees during the production process, which is manifested as a variety of complex forms of wellhead, wellbore and formation plugging, seriously restricting the normal and stable production of the gas wells. The plugging samples were analyzed by acid dissolution, infrared spectroscopy, energy dispersive electron microscopy, X-ray diffraction and chromatography-mass spectrometry, with the result that the main components of the plugs are basically the same, and there are slight differences in the components of the plugs in different gas wells and key basic data such as geological features, completion methods, and well-entry fluids were comprehensively analyzed to further determine the source and formation mechanism of blockages. On this basis, according to the different plugging degrees and types of gas wells, the pump-injecting oil-cleaning organic blockage removing agent process for the wellbore is not completely blocked, the coiled tubing flushing process for the wellbore completely blocked, and the acidizing and plugging removal process measures for the formation blockage. Twelve gas wells in the Dengying Formation gas reservoir at the edge of the Gaoshi-Moxi platform belt were de-plugged by the above technologies, and the daily recovery gas volume is 145×104 m3, and the economic benefits are remarkable. A series of gas well plugging control technologies suitable for Dengying Formation gas reservoirs have been formed, which can be popularized and applied in the same type of sour gas fields.

Key words: Gaoshi-Moxi platform margin belt, plugging, organic plugging remover agent, acidizing plugging removal, coiled tubing plugging removal, chip catcher

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